model_brush.c

   1 /*
   2 Copyright (C) 1996-1997 Id Software, Inc.
   3
   4 This program is free software; you can redistribute it and/or
   5 modify it under the terms of the GNU General Public License
   6 as published by the Free Software Foundation; either version 2
   7 of the License, or (at your option) any later version.
   8
   9 This program is distributed in the hope that it will be useful,
  10 but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
  12
  13 See the GNU General Public License for more details.
  14
  15 You should have received a copy of the GNU General Public License
  16 along with this program; if not, write to the Free Software
  17 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  18
  19 */
  20
  21 #include "quakedef.h"
  22 #include "image.h"
  23 #include "r_shadow.h"
  24 #include "polygon.h"
  25 #include "curves.h"
  26 #include "wad.h"
  27
  28
  29 //cvar_t r_subdivide_size = {CVAR_SAVE, "r_subdivide_size", "128", "how large water polygons should be (smaller values produce more polygons which give better warping effects)"};
  30 cvar_t r_novis = {0, "r_novis", "0", "draws whole level, see also sv_cullentities_pvs 0"};
  31 cvar_t r_picmipworld = {CVAR_SAVE, "r_picmipworld", "1", "whether gl_picmip shall apply to world textures too"};
  32 cvar_t r_nosurftextures = {0, "r_nosurftextures", "0", "pretends there was no texture lump found in the q1bsp/hlbsp loading (useful for debugging this rare case)"};
  33 cvar_t r_subdivisions_tolerance = {0, "r_subdivisions_tolerance", "4", "maximum error tolerance on curve subdivision for rendering purposes (in other words, the curves will be given as many polygons as necessary to represent curves at this quality)"};
  34 cvar_t r_subdivisions_mintess = {0, "r_subdivisions_mintess", "0", "minimum number of subdivisions (values above 0 will smooth curves that don't need it)"};
  35 cvar_t r_subdivisions_maxtess = {0, "r_subdivisions_maxtess", "1024", "maximum number of subdivisions (prevents curves beyond a certain detail level, limits smoothing)"};
  36 cvar_t r_subdivisions_maxvertices = {0, "r_subdivisions_maxvertices", "65536", "maximum vertices allowed per subdivided curve"};
  37 cvar_t r_subdivisions_collision_tolerance = {0, "r_subdivisions_collision_tolerance", "15", "maximum error tolerance on curve subdivision for collision purposes (usually a larger error tolerance than for rendering)"};
  38 cvar_t r_subdivisions_collision_mintess = {0, "r_subdivisions_collision_mintess", "0", "minimum number of subdivisions (values above 0 will smooth curves that don't need it)"};
  39 cvar_t r_subdivisions_collision_maxtess = {0, "r_subdivisions_collision_maxtess", "1024", "maximum number of subdivisions (prevents curves beyond a certain detail level, limits smoothing)"};
  40 cvar_t r_subdivisions_collision_maxvertices = {0, "r_subdivisions_collision_maxvertices", "4225", "maximum vertices allowed per subdivided curve"};
  41 cvar_t mod_q3bsp_curves_collisions = {0, "mod_q3bsp_curves_collisions", "1", "enables collisions with curves (SLOW)"};
  42 cvar_t mod_q3bsp_curves_collisions_stride = {0, "mod_q3bsp_curves_collisions_stride", "16", "collisions against curves: optimize performance by doing a combined collision check for this triangle amount first (-1 avoids any box tests)"};
  43 cvar_t mod_q3bsp_curves_stride = {0, "mod_q3bsp_curves_stride", "16", "particle effect collisions against curves: optimize performance by doing a combined collision check for this triangle amount first (-1 avoids any box tests)"};
  44 cvar_t mod_q3bsp_optimizedtraceline = {0, "mod_q3bsp_optimizedtraceline", "1", "whether to use optimized traceline code for line traces (as opposed to tracebox code)"};
  45 cvar_t mod_q3bsp_debugtracebrush = {0, "mod_q3bsp_debugtracebrush", "0", "selects different tracebrush bsp recursion algorithms (for debugging purposes only)"};
  46 cvar_t mod_q3bsp_lightmapmergepower = {CVAR_SAVE, "mod_q3bsp_lightmapmergepower", "4", "merges the quake3 128x128 lightmap textures into larger lightmap group textures to speed up rendering, 1 = 256x256, 2 = 512x512, 3 = 1024x1024, 4 = 2048x2048, 5 = 4096x4096, ..."};
  47 cvar_t mod_q3bsp_nolightmaps = {CVAR_SAVE, "mod_q3bsp_nolightmaps", "0", "do not load lightmaps in Q3BSP maps (to save video RAM, but be warned: it looks ugly)"};
  48 cvar_t mod_q3bsp_tracelineofsight_brushes = {0, "mod_q3bsp_tracelineofsight_brushes", "0", "enables culling of entities behind detail brushes, curves, etc"};
  49
  50 static texture_t mod_q1bsp_texture_solid;
  51 static texture_t mod_q1bsp_texture_sky;
  52 static texture_t mod_q1bsp_texture_lava;
  53 static texture_t mod_q1bsp_texture_slime;
  54 static texture_t mod_q1bsp_texture_water;
  55
  56 void Mod_BrushInit(void)
  57 {
  58 //      Cvar_RegisterVariable(&r_subdivide_size);
  59         Cvar_RegisterVariable(&r_novis);
  60         Cvar_RegisterVariable(&r_picmipworld);
  61         Cvar_RegisterVariable(&r_nosurftextures);
  62         Cvar_RegisterVariable(&r_subdivisions_tolerance);
  63         Cvar_RegisterVariable(&r_subdivisions_mintess);
  64         Cvar_RegisterVariable(&r_subdivisions_maxtess);
  65         Cvar_RegisterVariable(&r_subdivisions_maxvertices);
  66         Cvar_RegisterVariable(&r_subdivisions_collision_tolerance);
  67         Cvar_RegisterVariable(&r_subdivisions_collision_mintess);
  68         Cvar_RegisterVariable(&r_subdivisions_collision_maxtess);
  69         Cvar_RegisterVariable(&r_subdivisions_collision_maxvertices);
  70         Cvar_RegisterVariable(&mod_q3bsp_curves_collisions);
  71         Cvar_RegisterVariable(&mod_q3bsp_curves_collisions_stride);
  72         Cvar_RegisterVariable(&mod_q3bsp_curves_stride);
  73         Cvar_RegisterVariable(&mod_q3bsp_optimizedtraceline);
  74         Cvar_RegisterVariable(&mod_q3bsp_debugtracebrush);
  75         Cvar_RegisterVariable(&mod_q3bsp_lightmapmergepower);
  76         Cvar_RegisterVariable(&mod_q3bsp_nolightmaps);
  77         Cvar_RegisterVariable(&mod_q3bsp_tracelineofsight_brushes);
  78
  79         memset(&mod_q1bsp_texture_solid, 0, sizeof(mod_q1bsp_texture_solid));
  80         strlcpy(mod_q1bsp_texture_solid.name, "solid" , sizeof(mod_q1bsp_texture_solid.name));
  81         mod_q1bsp_texture_solid.surfaceflags = 0;
  82         mod_q1bsp_texture_solid.supercontents = SUPERCONTENTS_SOLID;
  83
  84         mod_q1bsp_texture_sky = mod_q1bsp_texture_solid;
  85         strlcpy(mod_q1bsp_texture_sky.name, "sky", sizeof(mod_q1bsp_texture_sky.name));
  86         mod_q1bsp_texture_sky.surfaceflags = Q3SURFACEFLAG_SKY | Q3SURFACEFLAG_NOIMPACT | Q3SURFACEFLAG_NOMARKS | Q3SURFACEFLAG_NODLIGHT | Q3SURFACEFLAG_NOLIGHTMAP;
  87         mod_q1bsp_texture_sky.supercontents = SUPERCONTENTS_SKY | SUPERCONTENTS_NODROP;
  88
  89         mod_q1bsp_texture_lava = mod_q1bsp_texture_solid;
  90         strlcpy(mod_q1bsp_texture_lava.name, "*lava", sizeof(mod_q1bsp_texture_lava.name));
  91         mod_q1bsp_texture_lava.surfaceflags = Q3SURFACEFLAG_NOMARKS;
  92         mod_q1bsp_texture_lava.supercontents = SUPERCONTENTS_LAVA | SUPERCONTENTS_NODROP;
  93
  94         mod_q1bsp_texture_slime = mod_q1bsp_texture_solid;
  95         strlcpy(mod_q1bsp_texture_slime.name, "*slime", sizeof(mod_q1bsp_texture_slime.name));
  96         mod_q1bsp_texture_slime.surfaceflags = Q3SURFACEFLAG_NOMARKS;
  97         mod_q1bsp_texture_slime.supercontents = SUPERCONTENTS_SLIME;
  98
  99         mod_q1bsp_texture_water = mod_q1bsp_texture_solid;
 100         strlcpy(mod_q1bsp_texture_water.name, "*water", sizeof(mod_q1bsp_texture_water.name));
 101         mod_q1bsp_texture_water.surfaceflags = Q3SURFACEFLAG_NOMARKS;
 102         mod_q1bsp_texture_water.supercontents = SUPERCONTENTS_WATER;
 103 }
 104
 105 static mleaf_t *Mod_Q1BSP_PointInLeaf(dp_model_t *model, const vec3_t p)
 106 {
 107         mnode_t *node;
 108
 109         if (model == NULL)
 110                 return NULL;
 111
 112         // LordHavoc: modified to start at first clip node,
 113         // in other words: first node of the (sub)model
 114         node = model->brush.data_nodes + model->brushq1.hulls[0].firstclipnode;
 115         while (node->plane)
 116                 node = node->children[(node->plane->type < 3 ? p[node->plane->type] : DotProduct(p,node->plane->normal)) < node->plane->dist];
 117
 118         return (mleaf_t *)node;
 119 }
 120
 121 static void Mod_Q1BSP_AmbientSoundLevelsForPoint(dp_model_t *model, const vec3_t p, unsigned char *out, int outsize)
 122 {
 123         int i;
 124         mleaf_t *leaf;
 125         leaf = Mod_Q1BSP_PointInLeaf(model, p);
 126         if (leaf)
 127         {
 128                 i = min(outsize, (int)sizeof(leaf->ambient_sound_level));
 129                 if (i)
 130                 {
 131                         memcpy(out, leaf->ambient_sound_level, i);
 132                         out += i;
 133                         outsize -= i;
 134                 }
 135         }
 136         if (outsize)
 137                 memset(out, 0, outsize);
 138 }
 139
 140 static int Mod_Q1BSP_FindBoxClusters(dp_model_t *model, const vec3_t mins, const vec3_t maxs, int maxclusters, int *clusterlist)
 141 {
 142         int numclusters = 0;
 143         int nodestackindex = 0;
 144         mnode_t *node, *nodestack[1024];
 145         if (!model->brush.num_pvsclusters)
 146                 return -1;
 147         node = model->brush.data_nodes + model->brushq1.hulls[0].firstclipnode;
 148         for (;;)
 149         {
 150 #if 1
 151                 if (node->plane)
 152                 {
 153                         // node - recurse down the BSP tree
 154                         int sides = BoxOnPlaneSide(mins, maxs, node->plane);
 155                         if (sides < 3)
 156                         {
 157                                 if (sides == 0)
 158                                         return -1; // ERROR: NAN bounding box!
 159                                 // box is on one side of plane, take that path
 160                                 node = node->children[sides-1];
 161                         }
 162                         else
 163                         {
 164                                 // box crosses plane, take one path and remember the other
 165                                 if (nodestackindex < 1024)
 166                                         nodestack[nodestackindex++] = node->children[0];
 167                                 node = node->children[1];
 168                         }
 169                         continue;
 170                 }
 171                 else
 172                 {
 173                         // leaf - add clusterindex to list
 174                         if (numclusters < maxclusters)
 175                                 clusterlist[numclusters] = ((mleaf_t *)node)->clusterindex;
 176                         numclusters++;
 177                 }
 178 #else
 179                 if (BoxesOverlap(mins, maxs, node->mins, node->maxs))
 180                 {
 181                         if (node->plane)
 182                         {
 183                                 if (nodestackindex < 1024)
 184                                         nodestack[nodestackindex++] = node->children[0];
 185                                 node = node->children[1];
 186                                 continue;
 187                         }
 188                         else
 189                         {
 190                                 // leaf - add clusterindex to list
 191                                 if (numclusters < maxclusters)
 192                                         clusterlist[numclusters] = ((mleaf_t *)node)->clusterindex;
 193                                 numclusters++;
 194                         }
 195                 }
 196 #endif
 197                 // try another path we didn't take earlier
 198                 if (nodestackindex == 0)
 199                         break;
 200                 node = nodestack[--nodestackindex];
 201         }
 202         // return number of clusters found (even if more than the maxclusters)
 203         return numclusters;
 204 }
 205
 206 static int Mod_Q1BSP_BoxTouchingPVS(dp_model_t *model, const unsigned char *pvs, const vec3_t mins, const vec3_t maxs)
 207 {
 208         int nodestackindex = 0;
 209         mnode_t *node, *nodestack[1024];
 210         if (!model->brush.num_pvsclusters)
 211                 return true;
 212         node = model->brush.data_nodes + model->brushq1.hulls[0].firstclipnode;
 213         for (;;)
 214         {
 215 #if 1
 216                 if (node->plane)
 217                 {
 218                         // node - recurse down the BSP tree
 219                         int sides = BoxOnPlaneSide(mins, maxs, node->plane);
 220                         if (sides < 3)
 221                         {
 222                                 if (sides == 0)
 223                                         return -1; // ERROR: NAN bounding box!
 224                                 // box is on one side of plane, take that path
 225                                 node = node->children[sides-1];
 226                         }
 227                         else
 228                         {
 229                                 // box crosses plane, take one path and remember the other
 230                                 if (nodestackindex < 1024)
 231                                         nodestack[nodestackindex++] = node->children[0];
 232                                 node = node->children[1];
 233                         }
 234                         continue;
 235                 }
 236                 else
 237                 {
 238                         // leaf - check cluster bit
 239                         int clusterindex = ((mleaf_t *)node)->clusterindex;
 240                         if (CHECKPVSBIT(pvs, clusterindex))
 241                         {
 242                                 // it is visible, return immediately with the news
 243                                 return true;
 244                         }
 245                 }
 246 #else
 247                 if (BoxesOverlap(mins, maxs, node->mins, node->maxs))
 248                 {
 249                         if (node->plane)
 250                         {
 251                                 if (nodestackindex < 1024)
 252                                         nodestack[nodestackindex++] = node->children[0];
 253                                 node = node->children[1];
 254                                 continue;
 255                         }
 256                         else
 257                         {
 258                                 // leaf - check cluster bit
 259                                 int clusterindex = ((mleaf_t *)node)->clusterindex;
 260                                 if (CHECKPVSBIT(pvs, clusterindex))
 261                                 {
 262                                         // it is visible, return immediately with the news
 263                                         return true;
 264                                 }
 265                         }
 266                 }
 267 #endif
 268                 // nothing to see here, try another path we didn't take earlier
 269                 if (nodestackindex == 0)
 270                         break;
 271                 node = nodestack[--nodestackindex];
 272         }
 273         // it is not visible
 274         return false;
 275 }
 276
 277 static int Mod_Q1BSP_BoxTouchingLeafPVS(dp_model_t *model, const unsigned char *pvs, const vec3_t mins, const vec3_t maxs)
 278 {
 279         int nodestackindex = 0;
 280         mnode_t *node, *nodestack[1024];
 281         if (!model->brush.num_leafs)
 282                 return true;
 283         node = model->brush.data_nodes + model->brushq1.hulls[0].firstclipnode;
 284         for (;;)
 285         {
 286 #if 1
 287                 if (node->plane)
 288                 {
 289                         // node - recurse down the BSP tree
 290                         int sides = BoxOnPlaneSide(mins, maxs, node->plane);
 291                         if (sides < 3)
 292                         {
 293                                 if (sides == 0)
 294                                         return -1; // ERROR: NAN bounding box!
 295                                 // box is on one side of plane, take that path
 296                                 node = node->children[sides-1];
 297                         }
 298                         else
 299                         {
 300                                 // box crosses plane, take one path and remember the other
 301                                 if (nodestackindex < 1024)
 302                                         nodestack[nodestackindex++] = node->children[0];
 303                                 node = node->children[1];
 304                         }
 305                         continue;
 306                 }
 307                 else
 308                 {
 309                         // leaf - check cluster bit
 310                         int clusterindex = ((mleaf_t *)node) - model->brush.data_leafs;
 311                         if (CHECKPVSBIT(pvs, clusterindex))
 312                         {
 313                                 // it is visible, return immediately with the news
 314                                 return true;
 315                         }
 316                 }
 317 #else
 318                 if (BoxesOverlap(mins, maxs, node->mins, node->maxs))
 319                 {
 320                         if (node->plane)
 321                         {
 322                                 if (nodestackindex < 1024)
 323                                         nodestack[nodestackindex++] = node->children[0];
 324                                 node = node->children[1];
 325                                 continue;
 326                         }
 327                         else
 328                         {
 329                                 // leaf - check cluster bit
 330                                 int clusterindex = ((mleaf_t *)node) - model->brush.data_leafs;
 331                                 if (CHECKPVSBIT(pvs, clusterindex))
 332                                 {
 333                                         // it is visible, return immediately with the news
 334                                         return true;
 335                                 }
 336                         }
 337                 }
 338 #endif
 339                 // nothing to see here, try another path we didn't take earlier
 340                 if (nodestackindex == 0)
 341                         break;
 342                 node = nodestack[--nodestackindex];
 343         }
 344         // it is not visible
 345         return false;
 346 }
 347
 348 static int Mod_Q1BSP_BoxTouchingVisibleLeafs(dp_model_t *model, const unsigned char *visibleleafs, const vec3_t mins, const vec3_t maxs)
 349 {
 350         int nodestackindex = 0;
 351         mnode_t *node, *nodestack[1024];
 352         if (!model->brush.num_leafs)
 353                 return true;
 354         node = model->brush.data_nodes + model->brushq1.hulls[0].firstclipnode;
 355         for (;;)
 356         {
 357 #if 1
 358                 if (node->plane)
 359                 {
 360                         // node - recurse down the BSP tree
 361                         int sides = BoxOnPlaneSide(mins, maxs, node->plane);
 362                         if (sides < 3)
 363                         {
 364                                 if (sides == 0)
 365                                         return -1; // ERROR: NAN bounding box!
 366                                 // box is on one side of plane, take that path
 367                                 node = node->children[sides-1];
 368                         }
 369                         else
 370                         {
 371                                 // box crosses plane, take one path and remember the other
 372                                 if (nodestackindex < 1024)
 373                                         nodestack[nodestackindex++] = node->children[0];
 374                                 node = node->children[1];
 375                         }
 376                         continue;
 377                 }
 378                 else
 379                 {
 380                         // leaf - check if it is visible
 381                         if (visibleleafs[(mleaf_t *)node - model->brush.data_leafs])
 382                         {
 383                                 // it is visible, return immediately with the news
 384                                 return true;
 385                         }
 386                 }
 387 #else
 388                 if (BoxesOverlap(mins, maxs, node->mins, node->maxs))
 389                 {
 390                         if (node->plane)
 391                         {
 392                                 if (nodestackindex < 1024)
 393                                         nodestack[nodestackindex++] = node->children[0];
 394                                 node = node->children[1];
 395                                 continue;
 396                         }
 397                         else
 398                         {
 399                                 // leaf - check if it is visible
 400                                 if (visibleleafs[(mleaf_t *)node - model->brush.data_leafs])
 401                                 {
 402                                         // it is visible, return immediately with the news
 403                                         return true;
 404                                 }
 405                         }
 406                 }
 407 #endif
 408                 // nothing to see here, try another path we didn't take earlier
 409                 if (nodestackindex == 0)
 410                         break;
 411                 node = nodestack[--nodestackindex];
 412         }
 413         // it is not visible
 414         return false;
 415 }
 416
 417 typedef struct findnonsolidlocationinfo_s
 418 {
 419         vec3_t center;
 420         vec3_t absmin, absmax;
 421         vec_t radius;
 422         vec3_t nudge;
 423         vec_t bestdist;
 424         dp_model_t *model;
 425 }
 426 findnonsolidlocationinfo_t;
 427
 428 static void Mod_Q1BSP_FindNonSolidLocation_r_Triangle(findnonsolidlocationinfo_t *info, msurface_t *surface, int k)
 429 {
 430         int i, *tri;
 431         float dist, f, vert[3][3], edge[3][3], facenormal[3], edgenormal[3][3], point[3];
 432
 433         tri = (info->model->surfmesh.data_element3i + 3 * surface->num_firsttriangle) + k * 3;
 434         VectorCopy((info->model->surfmesh.data_vertex3f + tri[0] * 3), vert[0]);
 435         VectorCopy((info->model->surfmesh.data_vertex3f + tri[1] * 3), vert[1]);
 436         VectorCopy((info->model->surfmesh.data_vertex3f + tri[2] * 3), vert[2]);
 437         VectorSubtract(vert[1], vert[0], edge[0]);
 438         VectorSubtract(vert[2], vert[1], edge[1]);
 439         CrossProduct(edge[1], edge[0], facenormal);
 440         if (facenormal[0] || facenormal[1] || facenormal[2])
 441         {
 442                 VectorNormalize(facenormal);
 443                 f = DotProduct(info->center, facenormal) - DotProduct(vert[0], facenormal);
 444                 if (f <= info->bestdist && f >= -info->bestdist)
 445                 {
 446                         VectorSubtract(vert[0], vert[2], edge[2]);
 447                         VectorNormalize(edge[0]);
 448                         VectorNormalize(edge[1]);
 449                         VectorNormalize(edge[2]);
 450                         CrossProduct(facenormal, edge[0], edgenormal[0]);
 451                         CrossProduct(facenormal, edge[1], edgenormal[1]);
 452                         CrossProduct(facenormal, edge[2], edgenormal[2]);
 453                         // face distance
 454                         if (DotProduct(info->center, edgenormal[0]) < DotProduct(vert[0], edgenormal[0])
 455                                         && DotProduct(info->center, edgenormal[1]) < DotProduct(vert[1], edgenormal[1])
 456                                         && DotProduct(info->center, edgenormal[2]) < DotProduct(vert[2], edgenormal[2]))
 457                         {
 458                                 // we got lucky, the center is within the face
 459                                 dist = DotProduct(info->center, facenormal) - DotProduct(vert[0], facenormal);
 460                                 if (dist < 0)
 461                                 {
 462                                         dist = -dist;
 463                                         if (info->bestdist > dist)
 464                                         {
 465                                                 info->bestdist = dist;
 466                                                 VectorScale(facenormal, (info->radius - -dist), info->nudge);
 467                                         }
 468                                 }
 469                                 else
 470                                 {
 471                                         if (info->bestdist > dist)
 472                                         {
 473                                                 info->bestdist = dist;
 474                                                 VectorScale(facenormal, (info->radius - dist), info->nudge);
 475                                         }
 476                                 }
 477                         }
 478                         else
 479                         {
 480                                 // check which edge or vertex the center is nearest
 481                                 for (i = 0;i < 3;i++)
 482                                 {
 483                                         f = DotProduct(info->center, edge[i]);
 484                                         if (f >= DotProduct(vert[0], edge[i])
 485                                                         && f <= DotProduct(vert[1], edge[i]))
 486                                         {
 487                                                 // on edge
 488                                                 VectorMA(info->center, -f, edge[i], point);
 489                                                 dist = sqrt(DotProduct(point, point));
 490                                                 if (info->bestdist > dist)
 491                                                 {
 492                                                         info->bestdist = dist;
 493                                                         VectorScale(point, (info->radius / dist), info->nudge);
 494                                                 }
 495                                                 // skip both vertex checks
 496                                                 // (both are further away than this edge)
 497                                                 i++;
 498                                         }
 499                                         else
 500                                         {
 501                                                 // not on edge, check first vertex of edge
 502                                                 VectorSubtract(info->center, vert[i], point);
 503                                                 dist = sqrt(DotProduct(point, point));
 504                                                 if (info->bestdist > dist)
 505                                                 {
 506                                                         info->bestdist = dist;
 507                                                         VectorScale(point, (info->radius / dist), info->nudge);
 508                                                 }
 509                                         }
 510                                 }
 511                         }
 512                 }
 513         }
 514 }
 515
 516 static void Mod_Q1BSP_FindNonSolidLocation_r_Leaf(findnonsolidlocationinfo_t *info, mleaf_t *leaf)
 517 {
 518         int surfacenum, k, *mark;
 519         msurface_t *surface;
 520         for (surfacenum = 0, mark = leaf->firstleafsurface;surfacenum < leaf->numleafsurfaces;surfacenum++, mark++)
 521         {
 522                 surface = info->model->data_surfaces + *mark;
 523                 if (surface->texture->supercontents & SUPERCONTENTS_SOLID)
 524                 {
 525                         if(surface->num_bboxstride > 0)
 526                         {
 527                                 int i, cnt, tri;
 528                                 cnt = (surface->num_triangles + surface->num_bboxstride - 1) / surface->num_bboxstride;
 529                                 for(i = 0; i < cnt; ++i)
 530                                 {
 531                                         if(BoxesOverlap(surface->data_bbox6f + i * 6, surface->data_bbox6f + i * 6 + 3, info->absmin, info->absmax))
 532                                         {
 533                                                 for(k = 0; k < surface->num_bboxstride; ++k)
 534                                                 {
 535                                                         tri = i * surface->num_bboxstride + k;
 536                                                         if(tri >= surface->num_triangles)
 537                                                                 break;
 538                                                         Mod_Q1BSP_FindNonSolidLocation_r_Triangle(info, surface, tri);
 539                                                 }
 540                                         }
 541                                 }
 542                         }
 543                         else
 544                         {
 545                                 for (k = 0;k < surface->num_triangles;k++)
 546                                 {
 547                                         Mod_Q1BSP_FindNonSolidLocation_r_Triangle(info, surface, k);
 548                                 }
 549                         }
 550                 }
 551         }
 552 }
 553
 554 static void Mod_Q1BSP_FindNonSolidLocation_r(findnonsolidlocationinfo_t *info, mnode_t *node)
 555 {
 556         if (node->plane)
 557         {
 558                 float f = PlaneDiff(info->center, node->plane);
 559                 if (f >= -info->bestdist)
 560                         Mod_Q1BSP_FindNonSolidLocation_r(info, node->children[0]);
 561                 if (f <= info->bestdist)
 562                         Mod_Q1BSP_FindNonSolidLocation_r(info, node->children[1]);
 563         }
 564         else
 565         {
 566                 if (((mleaf_t *)node)->numleafsurfaces)
 567                         Mod_Q1BSP_FindNonSolidLocation_r_Leaf(info, (mleaf_t *)node);
 568         }
 569 }
 570
 571 static void Mod_Q1BSP_FindNonSolidLocation(dp_model_t *model, const vec3_t in, vec3_t out, float radius)
 572 {
 573         int i;
 574         findnonsolidlocationinfo_t info;
 575         if (model == NULL)
 576         {
 577                 VectorCopy(in, out);
 578                 return;
 579         }
 580         VectorCopy(in, info.center);
 581         info.radius = radius;
 582         info.model = model;
 583         i = 0;
 584         do
 585         {
 586                 VectorClear(info.nudge);
 587                 info.bestdist = radius;
 588                 VectorCopy(info.center, info.absmin);
 589                 VectorCopy(info.center, info.absmax);
 590                 info.absmin[0] -= info.radius + 1;
 591                 info.absmin[1] -= info.radius + 1;
 592                 info.absmin[2] -= info.radius + 1;
 593                 info.absmax[0] += info.radius + 1;
 594                 info.absmax[1] += info.radius + 1;
 595                 info.absmax[2] += info.radius + 1;
 596                 Mod_Q1BSP_FindNonSolidLocation_r(&info, model->brush.data_nodes + model->brushq1.hulls[0].firstclipnode);
 597                 VectorAdd(info.center, info.nudge, info.center);
 598         }
 599         while (info.bestdist < radius && ++i < 10);
 600         VectorCopy(info.center, out);
 601 }
 602
 603 int Mod_Q1BSP_SuperContentsFromNativeContents(dp_model_t *model, int nativecontents)
 604 {
 605         switch(nativecontents)
 606         {
 607                 case CONTENTS_EMPTY:
 608                         return 0;
 609                 case CONTENTS_SOLID:
 610                         return SUPERCONTENTS_SOLID | SUPERCONTENTS_OPAQUE;
 611                 case CONTENTS_WATER:
 612                         return SUPERCONTENTS_WATER;
 613                 case CONTENTS_SLIME:
 614                         return SUPERCONTENTS_SLIME;
 615                 case CONTENTS_LAVA:
 616                         return SUPERCONTENTS_LAVA | SUPERCONTENTS_NODROP;
 617                 case CONTENTS_SKY:
 618                         return SUPERCONTENTS_SKY | SUPERCONTENTS_NODROP | SUPERCONTENTS_OPAQUE; // to match behaviour of Q3 maps, let sky count as opaque
 619         }
 620         return 0;
 621 }
 622
 623 int Mod_Q1BSP_NativeContentsFromSuperContents(dp_model_t *model, int supercontents)
 624 {
 625         if (supercontents & (SUPERCONTENTS_SOLID | SUPERCONTENTS_BODY))
 626                 return CONTENTS_SOLID;
 627         if (supercontents & SUPERCONTENTS_SKY)
 628                 return CONTENTS_SKY;
 629         if (supercontents & SUPERCONTENTS_LAVA)
 630                 return CONTENTS_LAVA;
 631         if (supercontents & SUPERCONTENTS_SLIME)
 632                 return CONTENTS_SLIME;
 633         if (supercontents & SUPERCONTENTS_WATER)
 634                 return CONTENTS_WATER;
 635         return CONTENTS_EMPTY;
 636 }
 637
 638 typedef struct RecursiveHullCheckTraceInfo_s
 639 {
 640         // the hull we're tracing through
 641         const hull_t *hull;
 642
 643         // the trace structure to fill in
 644         trace_t *trace;
 645
 646         // start, end, and end - start (in model space)
 647         double start[3];
 648         double end[3];
 649         double dist[3];
 650 }
 651 RecursiveHullCheckTraceInfo_t;
 652
 653 // 1/32 epsilon to keep floating point happy
 654 #define DIST_EPSILON (0.03125)
 655
 656 #define HULLCHECKSTATE_EMPTY 0
 657 #define HULLCHECKSTATE_SOLID 1
 658 #define HULLCHECKSTATE_DONE 2
 659
 660 extern cvar_t collision_prefernudgedfraction;
 661 static int Mod_Q1BSP_RecursiveHullCheck(RecursiveHullCheckTraceInfo_t *t, int num, double p1f, double p2f, double p1[3], double p2[3])
 662 {
 663         // status variables, these don't need to be saved on the stack when
 664         // recursing...  but are because this should be thread-safe
 665         // (note: tracing against a bbox is not thread-safe, yet)
 666         int ret;
 667         mplane_t *plane;
 668         double t1, t2;
 669
 670         // variables that need to be stored on the stack when recursing
 671         mclipnode_t *node;
 672         int side;
 673         double midf, mid[3];
 674
 675         // LordHavoc: a goto!  everyone flee in terror... :)
 676 loc0:
 677         // check for empty
 678         if (num < 0)
 679         {
 680                 num = Mod_Q1BSP_SuperContentsFromNativeContents(NULL, num);
 681                 if (!t->trace->startfound)
 682                 {
 683                         t->trace->startfound = true;
 684                         t->trace->startsupercontents |= num;
 685                 }
 686                 if (num & SUPERCONTENTS_LIQUIDSMASK)
 687                         t->trace->inwater = true;
 688                 if (num == 0)
 689                         t->trace->inopen = true;
 690                 if (num & SUPERCONTENTS_SOLID)
 691                         t->trace->hittexture = &mod_q1bsp_texture_solid;
 692                 else if (num & SUPERCONTENTS_SKY)
 693                         t->trace->hittexture = &mod_q1bsp_texture_sky;
 694                 else if (num & SUPERCONTENTS_LAVA)
 695                         t->trace->hittexture = &mod_q1bsp_texture_lava;
 696                 else if (num & SUPERCONTENTS_SLIME)
 697                         t->trace->hittexture = &mod_q1bsp_texture_slime;
 698                 else
 699                         t->trace->hittexture = &mod_q1bsp_texture_water;
 700                 t->trace->hitq3surfaceflags = t->trace->hittexture->surfaceflags;
 701                 t->trace->hitsupercontents = num;
 702                 if (num & t->trace->hitsupercontentsmask)
 703                 {
 704                         // if the first leaf is solid, set startsolid
 705                         if (t->trace->allsolid)
 706                                 t->trace->startsolid = true;
 707 #if COLLISIONPARANOID >= 3
 708                         Con_Print("S");
 709 #endif
 710                         return HULLCHECKSTATE_SOLID;
 711                 }
 712                 else
 713                 {
 714                         t->trace->allsolid = false;
 715 #if COLLISIONPARANOID >= 3
 716                         Con_Print("E");
 717 #endif
 718                         return HULLCHECKSTATE_EMPTY;
 719                 }
 720         }
 721
 722         // find the point distances
 723         node = t->hull->clipnodes + num;
 724
 725         plane = t->hull->planes + node->planenum;
 726         if (plane->type < 3)
 727         {
 728                 t1 = p1[plane->type] - plane->dist;
 729                 t2 = p2[plane->type] - plane->dist;
 730         }
 731         else
 732         {
 733                 t1 = DotProduct (plane->normal, p1) - plane->dist;
 734                 t2 = DotProduct (plane->normal, p2) - plane->dist;
 735         }
 736
 737         if (t1 < 0)
 738         {
 739                 if (t2 < 0)
 740                 {
 741 #if COLLISIONPARANOID >= 3
 742                         Con_Print("<");
 743 #endif
 744                         num = node->children[1];
 745                         goto loc0;
 746                 }
 747                 side = 1;
 748         }
 749         else
 750         {
 751                 if (t2 >= 0)
 752                 {
 753 #if COLLISIONPARANOID >= 3
 754                         Con_Print(">");
 755 #endif
 756                         num = node->children[0];
 757                         goto loc0;
 758                 }
 759                 side = 0;
 760         }
 761
 762         // the line intersects, find intersection point
 763         // LordHavoc: this uses the original trace for maximum accuracy
 764 #if COLLISIONPARANOID >= 3
 765         Con_Print("M");
 766 #endif
 767         if (plane->type < 3)
 768         {
 769                 t1 = t->start[plane->type] - plane->dist;
 770                 t2 = t->end[plane->type] - plane->dist;
 771         }
 772         else
 773         {
 774                 t1 = DotProduct (plane->normal, t->start) - plane->dist;
 775                 t2 = DotProduct (plane->normal, t->end) - plane->dist;
 776         }
 777
 778         midf = t1 / (t1 - t2);
 779         midf = bound(p1f, midf, p2f);
 780         VectorMA(t->start, midf, t->dist, mid);
 781
 782         // recurse both sides, front side first
 783         ret = Mod_Q1BSP_RecursiveHullCheck(t, node->children[side], p1f, midf, p1, mid);
 784         // if this side is not empty, return what it is (solid or done)
 785         if (ret != HULLCHECKSTATE_EMPTY)
 786                 return ret;
 787
 788         ret = Mod_Q1BSP_RecursiveHullCheck(t, node->children[side ^ 1], midf, p2f, mid, p2);
 789         // if other side is not solid, return what it is (empty or done)
 790         if (ret != HULLCHECKSTATE_SOLID)
 791                 return ret;
 792
 793         // front is air and back is solid, this is the impact point...
 794         if (side)
 795         {
 796                 t->trace->plane.dist = -plane->dist;
 797                 VectorNegate (plane->normal, t->trace->plane.normal);
 798         }
 799         else
 800         {
 801                 t->trace->plane.dist = plane->dist;
 802                 VectorCopy (plane->normal, t->trace->plane.normal);
 803         }
 804
 805         // calculate the true fraction
 806         t1 = DotProduct(t->trace->plane.normal, t->start) - t->trace->plane.dist;
 807         t2 = DotProduct(t->trace->plane.normal, t->end) - t->trace->plane.dist;
 808         midf = t1 / (t1 - t2);
 809         t->trace->realfraction = bound(0, midf, 1);
 810
 811         // calculate the return fraction which is nudged off the surface a bit
 812         midf = (t1 - DIST_EPSILON) / (t1 - t2);
 813         t->trace->fraction = bound(0, midf, 1);
 814
 815         if (collision_prefernudgedfraction.integer)
 816                 t->trace->realfraction = t->trace->fraction;
 817
 818 #if COLLISIONPARANOID >= 3
 819         Con_Print("D");
 820 #endif
 821         return HULLCHECKSTATE_DONE;
 822 }
 823
 824 //#if COLLISIONPARANOID < 2
 825 static int Mod_Q1BSP_RecursiveHullCheckPoint(RecursiveHullCheckTraceInfo_t *t, int num)
 826 {
 827         mplane_t *plane;
 828         mclipnode_t *nodes = t->hull->clipnodes;
 829         mplane_t *planes = t->hull->planes;
 830         vec3_t point;
 831         VectorCopy(t->start, point);
 832         while (num >= 0)
 833         {
 834                 plane = planes + nodes[num].planenum;
 835                 num = nodes[num].children[(plane->type < 3 ? point[plane->type] : DotProduct(plane->normal, point)) < plane->dist];
 836         }
 837         num = Mod_Q1BSP_SuperContentsFromNativeContents(NULL, num);
 838         t->trace->startsupercontents |= num;
 839         if (num & SUPERCONTENTS_LIQUIDSMASK)
 840                 t->trace->inwater = true;
 841         if (num == 0)
 842                 t->trace->inopen = true;
 843         if (num & t->trace->hitsupercontentsmask)
 844         {
 845                 t->trace->allsolid = t->trace->startsolid = true;
 846                 return HULLCHECKSTATE_SOLID;
 847         }
 848         else
 849         {
 850                 t->trace->allsolid = t->trace->startsolid = false;
 851                 return HULLCHECKSTATE_EMPTY;
 852         }
 853 }
 854 //#endif
 855
 856 static void Mod_Q1BSP_TracePoint(struct model_s *model, const frameblend_t *frameblend, const skeleton_t *skeleton, trace_t *trace, const vec3_t start, int hitsupercontentsmask)
 857 {
 858         RecursiveHullCheckTraceInfo_t rhc;
 859
 860         memset(&rhc, 0, sizeof(rhc));
 861         memset(trace, 0, sizeof(trace_t));
 862         rhc.trace = trace;
 863         rhc.trace->fraction = 1;
 864         rhc.trace->realfraction = 1;
 865         rhc.trace->allsolid = true;
 866         rhc.hull = &model->brushq1.hulls[0]; // 0x0x0
 867         VectorCopy(start, rhc.start);
 868         VectorCopy(start, rhc.end);
 869         Mod_Q1BSP_RecursiveHullCheckPoint(&rhc, rhc.hull->firstclipnode);
 870 }
 871
 872 static void Mod_Q1BSP_TraceLine(struct model_s *model, const frameblend_t *frameblend, const skeleton_t *skeleton, trace_t *trace, const vec3_t start, const vec3_t end, int hitsupercontentsmask)
 873 {
 874         RecursiveHullCheckTraceInfo_t rhc;
 875
 876         if (VectorCompare(start, end))
 877         {
 878                 Mod_Q1BSP_TracePoint(model, frameblend, skeleton, trace, start, hitsupercontentsmask);
 879                 return;
 880         }
 881
 882         memset(&rhc, 0, sizeof(rhc));
 883         memset(trace, 0, sizeof(trace_t));
 884         rhc.trace = trace;
 885         rhc.trace->hitsupercontentsmask = hitsupercontentsmask;
 886         rhc.trace->fraction = 1;
 887         rhc.trace->realfraction = 1;
 888         rhc.trace->allsolid = true;
 889         rhc.hull = &model->brushq1.hulls[0]; // 0x0x0
 890         VectorCopy(start, rhc.start);
 891         VectorCopy(end, rhc.end);
 892         VectorSubtract(rhc.end, rhc.start, rhc.dist);
 893 #if COLLISIONPARANOID >= 2
 894         Con_Printf("t(%f %f %f,%f %f %f)", rhc.start[0], rhc.start[1], rhc.start[2], rhc.end[0], rhc.end[1], rhc.end[2]);
 895         Mod_Q1BSP_RecursiveHullCheck(&rhc, rhc.hull->firstclipnode, 0, 1, rhc.start, rhc.end);
 896         {
 897
 898                 double test[3];
 899                 trace_t testtrace;
 900                 VectorLerp(rhc.start, rhc.trace->fraction, rhc.end, test);
 901                 memset(&testtrace, 0, sizeof(trace_t));
 902                 rhc.trace = &testtrace;
 903                 rhc.trace->hitsupercontentsmask = hitsupercontentsmask;
 904                 rhc.trace->fraction = 1;
 905                 rhc.trace->realfraction = 1;
 906                 rhc.trace->allsolid = true;
 907                 VectorCopy(test, rhc.start);
 908                 VectorCopy(test, rhc.end);
 909                 VectorClear(rhc.dist);
 910                 Mod_Q1BSP_RecursiveHullCheckPoint(&rhc, rhc.hull->firstclipnode);
 911                 //Mod_Q1BSP_RecursiveHullCheck(&rhc, rhc.hull->firstclipnode, 0, 1, test, test);
 912                 if (!trace->startsolid && testtrace.startsolid)
 913                         Con_Printf(" - ended in solid!\n");
 914         }
 915         Con_Print("\n");
 916 #else
 917         if (VectorLength2(rhc.dist))
 918                 Mod_Q1BSP_RecursiveHullCheck(&rhc, rhc.hull->firstclipnode, 0, 1, rhc.start, rhc.end);
 919         else
 920                 Mod_Q1BSP_RecursiveHullCheckPoint(&rhc, rhc.hull->firstclipnode);
 921 #endif
 922 }
 923
 924 static void Mod_Q1BSP_TraceBox(struct model_s *model, const frameblend_t *frameblend, const skeleton_t *skeleton, trace_t *trace, const vec3_t start, const vec3_t boxmins, const vec3_t boxmaxs, const vec3_t end, int hitsupercontentsmask)
 925 {
 926         // this function currently only supports same size start and end
 927         double boxsize[3];
 928         RecursiveHullCheckTraceInfo_t rhc;
 929
 930         if (VectorCompare(boxmins, boxmaxs))
 931         {
 932                 if (VectorCompare(start, end))
 933                         Mod_Q1BSP_TracePoint(model, frameblend, skeleton, trace, start, hitsupercontentsmask);
 934                 else
 935                         Mod_Q1BSP_TraceLine(model, frameblend, skeleton, trace, start, end, hitsupercontentsmask);
 936                 return;
 937         }
 938
 939         memset(&rhc, 0, sizeof(rhc));
 940         memset(trace, 0, sizeof(trace_t));
 941         rhc.trace = trace;
 942         rhc.trace->hitsupercontentsmask = hitsupercontentsmask;
 943         rhc.trace->fraction = 1;
 944         rhc.trace->realfraction = 1;
 945         rhc.trace->allsolid = true;
 946         VectorSubtract(boxmaxs, boxmins, boxsize);
 947         if (boxsize[0] < 3)
 948                 rhc.hull = &model->brushq1.hulls[0]; // 0x0x0
 949         else if (model->brush.ishlbsp)
 950         {
 951                 // LordHavoc: this has to have a minor tolerance (the .1) because of
 952                 // minor float precision errors from the box being transformed around
 953                 if (boxsize[0] < 32.1)
 954                 {
 955                         if (boxsize[2] < 54) // pick the nearest of 36 or 72
 956                                 rhc.hull = &model->brushq1.hulls[3]; // 32x32x36
 957                         else
 958                                 rhc.hull = &model->brushq1.hulls[1]; // 32x32x72
 959                 }
 960                 else
 961                         rhc.hull = &model->brushq1.hulls[2]; // 64x64x64
 962         }
 963         else
 964         {
 965                 // LordHavoc: this has to have a minor tolerance (the .1) because of
 966                 // minor float precision errors from the box being transformed around
 967                 if (boxsize[0] < 32.1)
 968                         rhc.hull = &model->brushq1.hulls[1]; // 32x32x56
 969                 else
 970                         rhc.hull = &model->brushq1.hulls[2]; // 64x64x88
 971         }
 972         VectorMAMAM(1, start, 1, boxmins, -1, rhc.hull->clip_mins, rhc.start);
 973         VectorMAMAM(1, end, 1, boxmins, -1, rhc.hull->clip_mins, rhc.end);
 974         VectorSubtract(rhc.end, rhc.start, rhc.dist);
 975 #if COLLISIONPARANOID >= 2
 976         Con_Printf("t(%f %f %f,%f %f %f,%i %f %f %f)", rhc.start[0], rhc.start[1], rhc.start[2], rhc.end[0], rhc.end[1], rhc.end[2], rhc.hull - model->brushq1.hulls, rhc.hull->clip_mins[0], rhc.hull->clip_mins[1], rhc.hull->clip_mins[2]);
 977         Mod_Q1BSP_RecursiveHullCheck(&rhc, rhc.hull->firstclipnode, 0, 1, rhc.start, rhc.end);
 978         {
 979
 980                 double test[3];
 981                 trace_t testtrace;
 982                 VectorLerp(rhc.start, rhc.trace->fraction, rhc.end, test);
 983                 memset(&testtrace, 0, sizeof(trace_t));
 984                 rhc.trace = &testtrace;
 985                 rhc.trace->hitsupercontentsmask = hitsupercontentsmask;
 986                 rhc.trace->fraction = 1;
 987                 rhc.trace->realfraction = 1;
 988                 rhc.trace->allsolid = true;
 989                 VectorCopy(test, rhc.start);
 990                 VectorCopy(test, rhc.end);
 991                 VectorClear(rhc.dist);
 992                 Mod_Q1BSP_RecursiveHullCheckPoint(&rhc, rhc.hull->firstclipnode);
 993                 //Mod_Q1BSP_RecursiveHullCheck(&rhc, rhc.hull->firstclipnode, 0, 1, test, test);
 994                 if (!trace->startsolid && testtrace.startsolid)
 995                         Con_Printf(" - ended in solid!\n");
 996         }
 997         Con_Print("\n");
 998 #else
 999         if (VectorLength2(rhc.dist))
1000                 Mod_Q1BSP_RecursiveHullCheck(&rhc, rhc.hull->firstclipnode, 0, 1, rhc.start, rhc.end);
1001         else
1002                 Mod_Q1BSP_RecursiveHullCheckPoint(&rhc, rhc.hull->firstclipnode);
1003 #endif
1004 }
1005
1006 static int Mod_Q1BSP_PointSuperContents(struct model_s *model, int frame, const vec3_t point)
1007 {
1008         int num = model->brushq1.hulls[0].firstclipnode;
1009         mplane_t *plane;
1010         mclipnode_t *nodes = model->brushq1.hulls[0].clipnodes;
1011         mplane_t *planes = model->brushq1.hulls[0].planes;
1012         while (num >= 0)
1013         {
1014                 plane = planes + nodes[num].planenum;
1015                 num = nodes[num].children[(plane->type < 3 ? point[plane->type] : DotProduct(plane->normal, point)) < plane->dist];
1016         }
1017         return Mod_Q1BSP_SuperContentsFromNativeContents(NULL, num);
1018 }
1019
1020 void Collision_ClipTrace_Box(trace_t *trace, const vec3_t cmins, const vec3_t cmaxs, const vec3_t start, const vec3_t mins, const vec3_t maxs, const vec3_t end, int hitsupercontentsmask, int boxsupercontents, int boxq3surfaceflags, texture_t *boxtexture)
1021 {
1022 #if 1
1023         colbrushf_t cbox;
1024         colplanef_t cbox_planes[6];
1025         cbox.isaabb = true;
1026         cbox.hasaabbplanes = true;
1027         cbox.supercontents = boxsupercontents;
1028         cbox.numplanes = 6;
1029         cbox.numpoints = 0;
1030         cbox.numtriangles = 0;
1031         cbox.planes = cbox_planes;
1032         cbox.points = NULL;
1033         cbox.elements = NULL;
1034         cbox.markframe = 0;
1035         cbox.mins[0] = 0;
1036         cbox.mins[1] = 0;
1037         cbox.mins[2] = 0;
1038         cbox.maxs[0] = 0;
1039         cbox.maxs[1] = 0;
1040         cbox.maxs[2] = 0;
1041         cbox_planes[0].normal[0] =  1;cbox_planes[0].normal[1] =  0;cbox_planes[0].normal[2] =  0;cbox_planes[0].dist = cmaxs[0] - mins[0];
1042         cbox_planes[1].normal[0] = -1;cbox_planes[1].normal[1] =  0;cbox_planes[1].normal[2] =  0;cbox_planes[1].dist = maxs[0] - cmins[0];
1043         cbox_planes[2].normal[0] =  0;cbox_planes[2].normal[1] =  1;cbox_planes[2].normal[2] =  0;cbox_planes[2].dist = cmaxs[1] - mins[1];
1044         cbox_planes[3].normal[0] =  0;cbox_planes[3].normal[1] = -1;cbox_planes[3].normal[2] =  0;cbox_planes[3].dist = maxs[1] - cmins[1];
1045         cbox_planes[4].normal[0] =  0;cbox_planes[4].normal[1] =  0;cbox_planes[4].normal[2] =  1;cbox_planes[4].dist = cmaxs[2] - mins[2];
1046         cbox_planes[5].normal[0] =  0;cbox_planes[5].normal[1] =  0;cbox_planes[5].normal[2] = -1;cbox_planes[5].dist = maxs[2] - cmins[2];
1047         cbox_planes[0].q3surfaceflags = boxq3surfaceflags;cbox_planes[0].texture = boxtexture;
1048         cbox_planes[1].q3surfaceflags = boxq3surfaceflags;cbox_planes[1].texture = boxtexture;
1049         cbox_planes[2].q3surfaceflags = boxq3surfaceflags;cbox_planes[2].texture = boxtexture;
1050         cbox_planes[3].q3surfaceflags = boxq3surfaceflags;cbox_planes[3].texture = boxtexture;
1051         cbox_planes[4].q3surfaceflags = boxq3surfaceflags;cbox_planes[4].texture = boxtexture;
1052         cbox_planes[5].q3surfaceflags = boxq3surfaceflags;cbox_planes[5].texture = boxtexture;
1053         memset(trace, 0, sizeof(trace_t));
1054         trace->hitsupercontentsmask = hitsupercontentsmask;
1055         trace->fraction = 1;
1056         trace->realfraction = 1;
1057         Collision_TraceLineBrushFloat(trace, start, end, &cbox, &cbox);
1058 #else
1059         RecursiveHullCheckTraceInfo_t rhc;
1060         static hull_t box_hull;
1061         static mclipnode_t box_clipnodes[6];
1062         static mplane_t box_planes[6];
1063         // fill in a default trace
1064         memset(&rhc, 0, sizeof(rhc));
1065         memset(trace, 0, sizeof(trace_t));
1066         //To keep everything totally uniform, bounding boxes are turned into small
1067         //BSP trees instead of being compared directly.
1068         // create a temp hull from bounding box sizes
1069         box_planes[0].dist = cmaxs[0] - mins[0];
1070         box_planes[1].dist = cmins[0] - maxs[0];
1071         box_planes[2].dist = cmaxs[1] - mins[1];
1072         box_planes[3].dist = cmins[1] - maxs[1];
1073         box_planes[4].dist = cmaxs[2] - mins[2];
1074         box_planes[5].dist = cmins[2] - maxs[2];
1075 #if COLLISIONPARANOID >= 3
1076         Con_Printf("box_planes %f:%f %f:%f %f:%f\ncbox %f %f %f:%f %f %f\nbox %f %f %f:%f %f %f\n", box_planes[0].dist, box_planes[1].dist, box_planes[2].dist, box_planes[3].dist, box_planes[4].dist, box_planes[5].dist, cmins[0], cmins[1], cmins[2], cmaxs[0], cmaxs[1], cmaxs[2], mins[0], mins[1], mins[2], maxs[0], maxs[1], maxs[2]);
1077 #endif
1078
1079         if (box_hull.clipnodes == NULL)
1080         {
1081                 int i, side;
1082
1083                 //Set up the planes and clipnodes so that the six floats of a bounding box
1084                 //can just be stored out and get a proper hull_t structure.
1085
1086                 box_hull.clipnodes = box_clipnodes;
1087                 box_hull.planes = box_planes;
1088                 box_hull.firstclipnode = 0;
1089                 box_hull.lastclipnode = 5;
1090
1091                 for (i = 0;i < 6;i++)
1092                 {
1093                         box_clipnodes[i].planenum = i;
1094
1095                         side = i&1;
1096
1097                         box_clipnodes[i].children[side] = CONTENTS_EMPTY;
1098                         if (i != 5)
1099                                 box_clipnodes[i].children[side^1] = i + 1;
1100                         else
1101                                 box_clipnodes[i].children[side^1] = CONTENTS_SOLID;
1102
1103                         box_planes[i].type = i>>1;
1104                         box_planes[i].normal[i>>1] = 1;
1105                 }
1106         }
1107
1108         // trace a line through the generated clipping hull
1109         //rhc.boxsupercontents = boxsupercontents;
1110         rhc.hull = &box_hull;
1111         rhc.trace = trace;
1112         rhc.trace->hitsupercontentsmask = hitsupercontentsmask;
1113         rhc.trace->fraction = 1;
1114         rhc.trace->realfraction = 1;
1115         rhc.trace->allsolid = true;
1116         VectorCopy(start, rhc.start);
1117         VectorCopy(end, rhc.end);
1118         VectorSubtract(rhc.end, rhc.start, rhc.dist);
1119         Mod_Q1BSP_RecursiveHullCheck(&rhc, rhc.hull->firstclipnode, 0, 1, rhc.start, rhc.end);
1120         //VectorMA(rhc.start, rhc.trace->fraction, rhc.dist, rhc.trace->endpos);
1121         if (rhc.trace->startsupercontents)
1122                 rhc.trace->startsupercontents = boxsupercontents;
1123 #endif
1124 }
1125
1126 void Collision_ClipTrace_Point(trace_t *trace, const vec3_t cmins, const vec3_t cmaxs, const vec3_t start, int hitsupercontentsmask, int boxsupercontents, int boxq3surfaceflags, texture_t *boxtexture)
1127 {
1128         memset(trace, 0, sizeof(trace_t));
1129         trace->fraction = 1;
1130         trace->realfraction = 1;
1131         if (BoxesOverlap(start, start, cmins, cmaxs))
1132         {
1133                 trace->startsupercontents |= boxsupercontents;
1134                 if (hitsupercontentsmask & boxsupercontents)
1135                 {
1136                         trace->startsolid = true;
1137                         trace->allsolid = true;
1138                 }
1139         }
1140 }
1141
1142 static qboolean Mod_Q1BSP_TraceLineOfSight(struct model_s *model, const vec3_t start, const vec3_t end)
1143 {
1144         trace_t trace;
1145         model->TraceLine(model, NULL, NULL, &trace, start, end, SUPERCONTENTS_VISBLOCKERMASK);
1146         return trace.fraction == 1;
1147 }
1148
1149 static int Mod_Q1BSP_LightPoint_RecursiveBSPNode(dp_model_t *model, vec3_t ambientcolor, vec3_t diffusecolor, vec3_t diffusenormal, const mnode_t *node, float x, float y, float startz, float endz)
1150 {
1151         int side;
1152         float front, back;
1153         float mid, distz = endz - startz;
1154
1155 loc0:
1156         if (!node->plane)
1157                 return false;           // didn't hit anything
1158
1159         switch (node->plane->type)
1160         {
1161         case PLANE_X:
1162                 node = node->children[x < node->plane->dist];
1163                 goto loc0;
1164         case PLANE_Y:
1165                 node = node->children[y < node->plane->dist];
1166                 goto loc0;
1167         case PLANE_Z:
1168                 side = startz < node->plane->dist;
1169                 if ((endz < node->plane->dist) == side)
1170                 {
1171                         node = node->children[side];
1172                         goto loc0;
1173                 }
1174                 // found an intersection
1175                 mid = node->plane->dist;
1176                 break;
1177         default:
1178                 back = front = x * node->plane->normal[0] + y * node->plane->normal[1];
1179                 front += startz * node->plane->normal[2];
1180                 back += endz * node->plane->normal[2];
1181                 side = front < node->plane->dist;
1182                 if ((back < node->plane->dist) == side)
1183                 {
1184                         node = node->children[side];
1185                         goto loc0;
1186                 }
1187                 // found an intersection
1188                 mid = startz + distz * (front - node->plane->dist) / (front - back);
1189                 break;
1190         }
1191
1192         // go down front side
1193         if (node->children[side]->plane && Mod_Q1BSP_LightPoint_RecursiveBSPNode(model, ambientcolor, diffusecolor, diffusenormal, node->children[side], x, y, startz, mid))
1194                 return true;    // hit something
1195         else
1196         {
1197                 // check for impact on this node
1198                 if (node->numsurfaces)
1199                 {
1200                         int i, dsi, dti, lmwidth, lmheight;
1201                         float ds, dt;
1202                         msurface_t *surface;
1203                         unsigned char *lightmap;
1204                         int maps, line3, size3;
1205                         float dsfrac;
1206                         float dtfrac;
1207                         float scale, w, w00, w01, w10, w11;
1208
1209                         surface = model->data_surfaces + node->firstsurface;
1210                         for (i = 0;i < node->numsurfaces;i++, surface++)
1211                         {
1212                                 if (!(surface->texture->basematerialflags & MATERIALFLAG_WALL) || !surface->lightmapinfo->samples)
1213                                         continue;       // no lightmaps
1214
1215                                 // location we want to sample in the lightmap
1216                                 ds = ((x * surface->lightmapinfo->texinfo->vecs[0][0] + y * surface->lightmapinfo->texinfo->vecs[0][1] + mid * surface->lightmapinfo->texinfo->vecs[0][2] + surface->lightmapinfo->texinfo->vecs[0][3]) - surface->lightmapinfo->texturemins[0]) * 0.0625f;
1217                                 dt = ((x * surface->lightmapinfo->texinfo->vecs[1][0] + y * surface->lightmapinfo->texinfo->vecs[1][1] + mid * surface->lightmapinfo->texinfo->vecs[1][2] + surface->lightmapinfo->texinfo->vecs[1][3]) - surface->lightmapinfo->texturemins[1]) * 0.0625f;
1218
1219                                 // check the bounds
1220                                 dsi = (int)ds;
1221                                 dti = (int)dt;
1222                                 lmwidth = ((surface->lightmapinfo->extents[0]>>4)+1);
1223                                 lmheight = ((surface->lightmapinfo->extents[1]>>4)+1);
1224
1225                                 // is it in bounds?
1226                                 if (dsi >= 0 && dsi < lmwidth-1 && dti >= 0 && dti < lmheight-1)
1227                                 {
1228                                         // calculate bilinear interpolation factors
1229                                         // and also multiply by fixedpoint conversion factors
1230                                         dsfrac = ds - dsi;
1231                                         dtfrac = dt - dti;
1232                                         w00 = (1 - dsfrac) * (1 - dtfrac) * (1.0f / 32768.0f);
1233                                         w01 = (    dsfrac) * (1 - dtfrac) * (1.0f / 32768.0f);
1234                                         w10 = (1 - dsfrac) * (    dtfrac) * (1.0f / 32768.0f);
1235                                         w11 = (    dsfrac) * (    dtfrac) * (1.0f / 32768.0f);
1236
1237                                         // values for pointer math
1238                                         line3 = lmwidth * 3; // LordHavoc: *3 for colored lighting
1239                                         size3 = lmwidth * lmheight * 3; // LordHavoc: *3 for colored lighting
1240
1241                                         // look up the pixel
1242                                         lightmap = surface->lightmapinfo->samples + dti * line3 + dsi*3; // LordHavoc: *3 for colored lighting
1243
1244                                         // bilinear filter each lightmap style, and sum them
1245                                         for (maps = 0;maps < MAXLIGHTMAPS && surface->lightmapinfo->styles[maps] != 255;maps++)
1246                                         {
1247                                                 scale = r_refdef.scene.lightstylevalue[surface->lightmapinfo->styles[maps]];
1248                                                 w = w00 * scale;VectorMA(ambientcolor, w, lightmap            , ambientcolor);
1249                                                 w = w01 * scale;VectorMA(ambientcolor, w, lightmap + 3        , ambientcolor);
1250                                                 w = w10 * scale;VectorMA(ambientcolor, w, lightmap + line3    , ambientcolor);
1251                                                 w = w11 * scale;VectorMA(ambientcolor, w, lightmap + line3 + 3, ambientcolor);
1252                                                 lightmap += size3;
1253                                         }
1254
1255                                         return true; // success
1256                                 }
1257                         }
1258                 }
1259
1260                 // go down back side
1261                 node = node->children[side ^ 1];
1262                 startz = mid;
1263                 distz = endz - startz;
1264                 goto loc0;
1265         }
1266 }
1267
1268 void Mod_Q1BSP_LightPoint(dp_model_t *model, const vec3_t p, vec3_t ambientcolor, vec3_t diffusecolor, vec3_t diffusenormal)
1269 {
1270         // pretend lighting is coming down from above (due to lack of a lightgrid to know primary lighting direction)
1271         VectorSet(diffusenormal, 0, 0, 1);
1272
1273         if (!model->brushq1.lightdata)
1274         {
1275                 VectorSet(ambientcolor, 1, 1, 1);
1276                 VectorSet(diffusecolor, 0, 0, 0);
1277                 return;
1278         }
1279
1280         Mod_Q1BSP_LightPoint_RecursiveBSPNode(model, ambientcolor, diffusecolor, diffusenormal, model->brush.data_nodes + model->brushq1.hulls[0].firstclipnode, p[0], p[1], p[2] + 0.125, p[2] - 65536);
1281 }
1282
1283 static void Mod_Q1BSP_DecompressVis(const unsigned char *in, const unsigned char *inend, unsigned char *out, unsigned char *outend)
1284 {
1285         int c;
1286         unsigned char *outstart = out;
1287         while (out < outend)
1288         {
1289                 if (in == inend)
1290                 {
1291                         Con_Printf("Mod_Q1BSP_DecompressVis: input underrun on model \"%s\" (decompressed %i of %i output bytes)\n", loadmodel->name, (int)(out - outstart), (int)(outend - outstart));
1292                         return;
1293                 }
1294                 c = *in++;
1295                 if (c)
1296                         *out++ = c;
1297                 else
1298                 {
1299                         if (in == inend)
1300                         {
1301                                 Con_Printf("Mod_Q1BSP_DecompressVis: input underrun (during zero-run) on model \"%s\" (decompressed %i of %i output bytes)\n", loadmodel->name, (int)(out - outstart), (int)(outend - outstart));
1302                                 return;
1303                         }
1304                         for (c = *in++;c > 0;c--)
1305                         {
1306                                 if (out == outend)
1307                                 {
1308                                         Con_Printf("Mod_Q1BSP_DecompressVis: output overrun on model \"%s\" (decompressed %i of %i output bytes)\n", loadmodel->name, (int)(out - outstart), (int)(outend - outstart));
1309                                         return;
1310                                 }
1311                                 *out++ = 0;
1312                         }
1313                 }
1314         }
1315 }
1316
1317 /*
1318 =============
1319 R_Q1BSP_LoadSplitSky
1320
1321 A sky texture is 256*128, with the right side being a masked overlay
1322 ==============
1323 */
1324 void R_Q1BSP_LoadSplitSky (unsigned char *src, int width, int height, int bytesperpixel)
1325 {
1326         int x, y;
1327         int w = width/2;
1328         int h = height;
1329         unsigned *solidpixels = Mem_Alloc(tempmempool, w*h*sizeof(unsigned char[4]));
1330         unsigned *alphapixels = Mem_Alloc(tempmempool, w*h*sizeof(unsigned char[4]));
1331
1332         // allocate a texture pool if we need it
1333         if (loadmodel->texturepool == NULL && cls.state != ca_dedicated)
1334                 loadmodel->texturepool = R_AllocTexturePool();
1335
1336         if (bytesperpixel == 4)
1337         {
1338                 for (y = 0;y < h;y++)
1339                 {
1340                         for (x = 0;x < w;x++)
1341                         {
1342                                 solidpixels[y*w+x] = ((unsigned *)src)[y*width+x+w];
1343                                 alphapixels[y*w+x] = ((unsigned *)src)[y*width+x];
1344                         }
1345                 }
1346         }
1347         else
1348         {
1349                 // make an average value for the back to avoid
1350                 // a fringe on the top level
1351                 int p, r, g, b;
1352                 union
1353                 {
1354                         unsigned int i;
1355                         unsigned char b[4];
1356                 }
1357                 bgra;
1358                 r = g = b = 0;
1359                 for (y = 0;y < h;y++)
1360                 {
1361                         for (x = 0;x < w;x++)
1362                         {
1363                                 p = src[x*width+y+w];
1364                                 r += palette_rgb[p][0];
1365                                 g += palette_rgb[p][1];
1366                                 b += palette_rgb[p][2];
1367                         }
1368                 }
1369                 bgra.b[2] = r/(w*h);
1370                 bgra.b[1] = g/(w*h);
1371                 bgra.b[0] = b/(w*h);
1372                 bgra.b[3] = 0;
1373                 for (y = 0;y < h;y++)
1374                 {
1375                         for (x = 0;x < w;x++)
1376                         {
1377                                 solidpixels[y*w+x] = palette_bgra_complete[src[y*width+x+w]];
1378                                 p = src[y*width+x];
1379                                 alphapixels[y*w+x] = p ? palette_bgra_complete[p] : bgra.i;
1380                         }
1381                 }
1382         }
1383
1384         loadmodel->brush.solidskyskinframe = R_SkinFrame_LoadInternalBGRA("sky_solidtexture", 0         , (unsigned char *) solidpixels, w, h);
1385         loadmodel->brush.alphaskyskinframe = R_SkinFrame_LoadInternalBGRA("sky_alphatexture", TEXF_ALPHA, (unsigned char *) alphapixels, w, h);
1386         Mem_Free(solidpixels);
1387         Mem_Free(alphapixels);
1388 }
1389
1390 static void Mod_Q1BSP_LoadTextures(lump_t *l)
1391 {
1392         int i, j, k, num, max, altmax, mtwidth, mtheight, *dofs, incomplete;
1393         skinframe_t *skinframe;
1394         miptex_t *dmiptex;
1395         texture_t *tx, *tx2, *anims[10], *altanims[10];
1396         dmiptexlump_t *m;
1397         unsigned char *data, *mtdata;
1398         const char *s;
1399         char mapname[MAX_QPATH], name[MAX_QPATH];
1400         unsigned char zero[4];
1401
1402         memset(zero, 0, sizeof(zero));
1403
1404         loadmodel->data_textures = NULL;
1405
1406         // add two slots for notexture walls and notexture liquids
1407         if (l->filelen)
1408         {
1409                 m = (dmiptexlump_t *)(mod_base + l->fileofs);
1410                 m->nummiptex = LittleLong (m->nummiptex);
1411                 loadmodel->num_textures = m->nummiptex + 2;
1412                 loadmodel->num_texturesperskin = loadmodel->num_textures;
1413         }
1414         else
1415         {
1416                 m = NULL;
1417                 loadmodel->num_textures = 2;
1418                 loadmodel->num_texturesperskin = loadmodel->num_textures;
1419         }
1420
1421         loadmodel->data_textures = (texture_t *)Mem_Alloc(loadmodel->mempool, loadmodel->num_textures * sizeof(texture_t));
1422
1423         // fill out all slots with notexture
1424         if (cls.state != ca_dedicated)
1425                 skinframe = R_SkinFrame_LoadMissing();
1426         else
1427                 skinframe = NULL;
1428         for (i = 0, tx = loadmodel->data_textures;i < loadmodel->num_textures;i++, tx++)
1429         {
1430                 strlcpy(tx->name, "NO TEXTURE FOUND", sizeof(tx->name));
1431                 tx->width = 16;
1432                 tx->height = 16;
1433                 if (cls.state != ca_dedicated)
1434                 {
1435                         tx->numskinframes = 1;
1436                         tx->skinframerate = 1;
1437                         tx->skinframes[0] = skinframe;
1438                         tx->currentskinframe = tx->skinframes[0];
1439                 }
1440                 tx->basematerialflags = MATERIALFLAG_WALL;
1441                 if (i == loadmodel->num_textures - 1)
1442                 {
1443                         tx->basematerialflags |= MATERIALFLAG_WATERSCROLL | MATERIALFLAG_LIGHTBOTHSIDES | MATERIALFLAG_NOSHADOW;
1444                         tx->supercontents = mod_q1bsp_texture_water.supercontents;
1445                         tx->surfaceflags = mod_q1bsp_texture_water.surfaceflags;
1446                 }
1447                 else
1448                 {
1449                         tx->supercontents = mod_q1bsp_texture_solid.supercontents;
1450                         tx->surfaceflags = mod_q1bsp_texture_solid.surfaceflags;
1451                 }
1452                 tx->currentframe = tx;
1453
1454                 // clear water settings
1455                 tx->reflectmin = 0;
1456                 tx->reflectmax = 1;
1457                 tx->refractfactor = 1;
1458                 Vector4Set(tx->refractcolor4f, 1, 1, 1, 1);
1459                 tx->reflectfactor = 1;
1460                 Vector4Set(tx->reflectcolor4f, 1, 1, 1, 1);
1461                 tx->r_water_wateralpha = 1;
1462                 tx->specularscalemod = 1;
1463                 tx->specularpowermod = 1;
1464         }
1465
1466         if (!m)
1467         {
1468                 Con_Printf("%s: no miptex lump to load textures from\n", loadmodel->name);
1469                 return;
1470         }
1471
1472         s = loadmodel->name;
1473         if (!strncasecmp(s, "maps/", 5))
1474                 s += 5;
1475         FS_StripExtension(s, mapname, sizeof(mapname));
1476
1477         // just to work around bounds checking when debugging with it (array index out of bounds error thing)
1478         dofs = m->dataofs;
1479         // LordHavoc: mostly rewritten map texture loader
1480         for (i = 0;i < m->nummiptex;i++)
1481         {
1482                 dofs[i] = LittleLong(dofs[i]);
1483                 if (r_nosurftextures.integer)
1484                         continue;
1485                 if (dofs[i] == -1)
1486                 {
1487                         Con_DPrintf("%s: miptex #%i missing\n", loadmodel->name, i);
1488                         continue;
1489                 }
1490                 dmiptex = (miptex_t *)((unsigned char *)m + dofs[i]);
1491
1492                 // copy name, but only up to 16 characters
1493                 // (the output buffer can hold more than this, but the input buffer is
1494                 //  only 16)
1495                 for (j = 0;j < 16 && dmiptex->name[j];j++)
1496                         name[j] = dmiptex->name[j];
1497                 name[j] = 0;
1498
1499                 if (!name[0])
1500                 {
1501                         dpsnprintf(name, sizeof(name), "unnamed%i", i);
1502                         Con_DPrintf("%s: warning: renaming unnamed texture to %s\n", loadmodel->name, name);
1503                 }
1504
1505                 mtwidth = LittleLong(dmiptex->width);
1506                 mtheight = LittleLong(dmiptex->height);
1507                 mtdata = NULL;
1508                 j = LittleLong(dmiptex->offsets[0]);
1509                 if (j)
1510                 {
1511                         // texture included
1512                         if (j < 40 || j + mtwidth * mtheight > l->filelen)
1513                         {
1514                                 Con_Printf("%s: Texture \"%s\" is corrupt or incomplete\n", loadmodel->name, dmiptex->name);
1515                                 continue;
1516                         }
1517                         mtdata = (unsigned char *)dmiptex + j;
1518                 }
1519
1520                 if ((mtwidth & 15) || (mtheight & 15))
1521                         Con_DPrintf("%s: warning: texture \"%s\" is not 16 aligned\n", loadmodel->name, dmiptex->name);
1522
1523                 // LordHavoc: force all names to lowercase
1524                 for (j = 0;name[j];j++)
1525                         if (name[j] >= 'A' && name[j] <= 'Z')
1526                                 name[j] += 'a' - 'A';
1527
1528                 if (dmiptex->name[0] && Mod_LoadTextureFromQ3Shader(loadmodel->data_textures + i, name, false, false, 0))
1529                         continue;
1530
1531                 tx = loadmodel->data_textures + i;
1532                 strlcpy(tx->name, name, sizeof(tx->name));
1533                 tx->width = mtwidth;
1534                 tx->height = mtheight;
1535
1536                 if (tx->name[0] == '*')
1537                 {
1538                         if (!strncmp(tx->name, "*lava", 5))
1539                         {
1540                                 tx->supercontents = mod_q1bsp_texture_lava.supercontents;
1541                                 tx->surfaceflags = mod_q1bsp_texture_lava.surfaceflags;
1542                         }
1543                         else if (!strncmp(tx->name, "*slime", 6))
1544                         {
1545                                 tx->supercontents = mod_q1bsp_texture_slime.supercontents;
1546                                 tx->surfaceflags = mod_q1bsp_texture_slime.surfaceflags;
1547                         }
1548                         else
1549                         {
1550                                 tx->supercontents = mod_q1bsp_texture_water.supercontents;
1551                                 tx->surfaceflags = mod_q1bsp_texture_water.surfaceflags;
1552                         }
1553                 }
1554                 else if (!strncmp(tx->name, "sky", 3))
1555                 {
1556                         tx->supercontents = mod_q1bsp_texture_sky.supercontents;
1557                         tx->surfaceflags = mod_q1bsp_texture_sky.surfaceflags;
1558                 }
1559                 else
1560                 {
1561                         tx->supercontents = mod_q1bsp_texture_solid.supercontents;
1562                         tx->surfaceflags = mod_q1bsp_texture_solid.surfaceflags;
1563                 }
1564
1565                 if (cls.state != ca_dedicated)
1566                 {
1567                         // LordHavoc: HL sky textures are entirely different than quake
1568                         if (!loadmodel->brush.ishlbsp && !strncmp(tx->name, "sky", 3) && mtwidth == mtheight * 2)
1569                         {
1570                                 data = loadimagepixelsbgra(tx->name, false, false);
1571                                 if (data && image_width == image_height * 2)
1572                                 {
1573                                         R_Q1BSP_LoadSplitSky(data, image_width, image_height, 4);
1574                                         Mem_Free(data);
1575                                 }
1576                                 else if (mtdata != NULL)
1577                                         R_Q1BSP_LoadSplitSky(mtdata, mtwidth, mtheight, 1);
1578                         }
1579                         else
1580                         {
1581                                 skinframe = R_SkinFrame_LoadExternal(gamemode == GAME_TENEBRAE ? tx->name : va("textures/%s/%s", mapname, tx->name), TEXF_ALPHA | TEXF_MIPMAP | (r_picmipworld.integer ? TEXF_PICMIP : 0) | TEXF_COMPRESS, false);
1582                                 if (!skinframe)
1583                                         skinframe = R_SkinFrame_LoadExternal(gamemode == GAME_TENEBRAE ? tx->name : va("textures/%s", tx->name), TEXF_ALPHA | TEXF_MIPMAP | (r_picmipworld.integer ? TEXF_PICMIP : 0) | TEXF_COMPRESS, false);
1584                                 if (!skinframe)
1585                                 {
1586                                         // did not find external texture, load it from the bsp or wad3
1587                                         if (loadmodel->brush.ishlbsp)
1588                                         {
1589                                                 // internal texture overrides wad
1590                                                 unsigned char *pixels, *freepixels;
1591                                                 pixels = freepixels = NULL;
1592                                                 if (mtdata)
1593                                                         pixels = W_ConvertWAD3TextureBGRA(dmiptex);
1594                                                 if (pixels == NULL)
1595                                                         pixels = freepixels = W_GetTextureBGRA(tx->name);
1596                                                 if (pixels != NULL)
1597                                                 {
1598                                                         tx->width = image_width;
1599                                                         tx->height = image_height;
1600                                                         skinframe = R_SkinFrame_LoadInternalBGRA(tx->name, TEXF_ALPHA | TEXF_MIPMAP | (r_picmipworld.integer ? TEXF_PICMIP : 0), pixels, image_width, image_height);
1601                                                 }
1602                                                 if (freepixels)
1603                                                         Mem_Free(freepixels);
1604                                         }
1605                                         else if (mtdata) // texture included
1606                                                 skinframe = R_SkinFrame_LoadInternalQuake(tx->name, TEXF_MIPMAP | (r_picmipworld.integer ? TEXF_PICMIP : 0), false, r_fullbrights.integer, mtdata, tx->width, tx->height);
1607                                 }
1608                                 // if skinframe is still NULL the "missing" texture will be used
1609                                 if (skinframe)
1610                                         tx->skinframes[0] = skinframe;
1611                         }
1612
1613                         tx->basematerialflags = MATERIALFLAG_WALL;
1614                         if (tx->name[0] == '*')
1615                         {
1616                                 // LordHavoc: some turbulent textures should not be affected by wateralpha
1617                                 if (!strncmp(tx->name, "*glassmirror", 12)) // Tenebrae
1618                                 {
1619                                         // replace the texture with transparent black
1620                                         Vector4Set(zero, 128, 128, 128, 128);
1621                                         tx->skinframes[0] = R_SkinFrame_LoadInternalBGRA(tx->name, TEXF_MIPMAP | TEXF_ALPHA, zero, 1, 1);
1622                                         tx->basematerialflags |= MATERIALFLAG_NOSHADOW | MATERIALFLAG_ADD | MATERIALFLAG_BLENDED | MATERIALFLAG_REFLECTION;
1623                                 }
1624                                 else if (!strncmp(tx->name,"*lava",5)
1625                                  || !strncmp(tx->name,"*teleport",9)
1626                                  || !strncmp(tx->name,"*rift",5)) // Scourge of Armagon texture
1627                                         tx->basematerialflags |= MATERIALFLAG_WATERSCROLL | MATERIALFLAG_LIGHTBOTHSIDES | MATERIALFLAG_NOSHADOW;
1628                                 else
1629                                         tx->basematerialflags |= MATERIALFLAG_WATERSCROLL | MATERIALFLAG_LIGHTBOTHSIDES | MATERIALFLAG_NOSHADOW | MATERIALFLAG_WATERALPHA | MATERIALFLAG_WATERSHADER;
1630                                 if (tx->skinframes[0] && tx->skinframes[0]->hasalpha)
1631                                         tx->basematerialflags |= MATERIALFLAG_ALPHA | MATERIALFLAG_BLENDED | MATERIALFLAG_NOSHADOW;
1632                         }
1633                         else if (!strncmp(tx->name, "mirror", 6)) // Tenebrae
1634                         {
1635                                 // replace the texture with black
1636                                 tx->skinframes[0] = R_SkinFrame_LoadInternalBGRA(tx->name, 0, zero, 1, 1);
1637                                 tx->basematerialflags |= MATERIALFLAG_REFLECTION;
1638                         }
1639                         else if (!strncmp(tx->name, "sky", 3))
1640                                 tx->basematerialflags = MATERIALFLAG_SKY | MATERIALFLAG_NOSHADOW;
1641                         else if (!strcmp(tx->name, "caulk"))
1642                                 tx->basematerialflags = MATERIALFLAG_NODRAW | MATERIALFLAG_NOSHADOW;
1643                         else if (tx->skinframes[0] && tx->skinframes[0]->hasalpha)
1644                                 tx->basematerialflags |= MATERIALFLAG_ALPHA | MATERIALFLAG_BLENDED | MATERIALFLAG_NOSHADOW;
1645
1646                         // start out with no animation
1647                         tx->currentframe = tx;
1648                         tx->currentskinframe = tx->skinframes[0];
1649                 }
1650         }
1651
1652         // sequence the animations
1653         for (i = 0;i < m->nummiptex;i++)
1654         {
1655                 tx = loadmodel->data_textures + i;
1656                 if (!tx || tx->name[0] != '+' || tx->name[1] == 0 || tx->name[2] == 0)
1657                         continue;
1658                 if (tx->anim_total[0] || tx->anim_total[1])
1659                         continue;       // already sequenced
1660
1661                 // find the number of frames in the animation
1662                 memset(anims, 0, sizeof(anims));
1663                 memset(altanims, 0, sizeof(altanims));
1664
1665                 for (j = i;j < m->nummiptex;j++)
1666                 {
1667                         tx2 = loadmodel->data_textures + j;
1668                         if (!tx2 || tx2->name[0] != '+' || strcmp(tx2->name+2, tx->name+2))
1669                                 continue;
1670
1671                         num = tx2->name[1];
1672                         if (num >= '0' && num <= '9')
1673                                 anims[num - '0'] = tx2;
1674                         else if (num >= 'a' && num <= 'j')
1675                                 altanims[num - 'a'] = tx2;
1676                         else
1677                                 Con_Printf("Bad animating texture %s\n", tx->name);
1678                 }
1679
1680                 max = altmax = 0;
1681                 for (j = 0;j < 10;j++)
1682                 {
1683                         if (anims[j])
1684                                 max = j + 1;
1685                         if (altanims[j])
1686                                 altmax = j + 1;
1687                 }
1688                 //Con_Printf("linking animation %s (%i:%i frames)\n\n", tx->name, max, altmax);
1689
1690                 incomplete = false;
1691                 for (j = 0;j < max;j++)
1692                 {
1693                         if (!anims[j])
1694                         {
1695                                 Con_Printf("Missing frame %i of %s\n", j, tx->name);
1696                                 incomplete = true;
1697                         }
1698                 }
1699                 for (j = 0;j < altmax;j++)
1700                 {
1701                         if (!altanims[j])
1702                         {
1703                                 Con_Printf("Missing altframe %i of %s\n", j, tx->name);
1704                                 incomplete = true;
1705                         }
1706                 }
1707                 if (incomplete)
1708                         continue;
1709
1710                 if (altmax < 1)
1711                 {
1712                         // if there is no alternate animation, duplicate the primary
1713                         // animation into the alternate
1714                         altmax = max;
1715                         for (k = 0;k < 10;k++)
1716                                 altanims[k] = anims[k];
1717                 }
1718
1719                 // link together the primary animation
1720                 for (j = 0;j < max;j++)
1721                 {
1722                         tx2 = anims[j];
1723                         tx2->animated = true;
1724                         tx2->anim_total[0] = max;
1725                         tx2->anim_total[1] = altmax;
1726                         for (k = 0;k < 10;k++)
1727                         {
1728                                 tx2->anim_frames[0][k] = anims[k];
1729                                 tx2->anim_frames[1][k] = altanims[k];
1730                         }
1731                 }
1732
1733                 // if there really is an alternate anim...
1734                 if (anims[0] != altanims[0])
1735                 {
1736                         // link together the alternate animation
1737                         for (j = 0;j < altmax;j++)
1738                         {
1739                                 tx2 = altanims[j];
1740                                 tx2->animated = true;
1741                                 // the primary/alternate are reversed here
1742                                 tx2->anim_total[0] = altmax;
1743                                 tx2->anim_total[1] = max;
1744                                 for (k = 0;k < 10;k++)
1745                                 {
1746                                         tx2->anim_frames[0][k] = altanims[k];
1747                                         tx2->anim_frames[1][k] = anims[k];
1748                                 }
1749                         }
1750                 }
1751         }
1752 }
1753
1754 static void Mod_Q1BSP_LoadLighting(lump_t *l)
1755 {
1756         int i;
1757         unsigned char *in, *out, *data, d;
1758         char litfilename[MAX_QPATH];
1759         char dlitfilename[MAX_QPATH];
1760         fs_offset_t filesize;
1761         if (loadmodel->brush.ishlbsp) // LordHavoc: load the colored lighting data straight
1762         {
1763                 loadmodel->brushq1.lightdata = (unsigned char *)Mem_Alloc(loadmodel->mempool, l->filelen);
1764                 for (i=0; i<l->filelen; i++)
1765                         loadmodel->brushq1.lightdata[i] = mod_base[l->fileofs+i] >>= 1;
1766         }
1767         else // LordHavoc: bsp version 29 (normal white lighting)
1768         {
1769                 // LordHavoc: hope is not lost yet, check for a .lit file to load
1770                 strlcpy (litfilename, loadmodel->name, sizeof (litfilename));
1771                 FS_StripExtension (litfilename, litfilename, sizeof (litfilename));
1772                 strlcpy (dlitfilename, litfilename, sizeof (dlitfilename));
1773                 strlcat (litfilename, ".lit", sizeof (litfilename));
1774                 strlcat (dlitfilename, ".dlit", sizeof (dlitfilename));
1775                 data = (unsigned char*) FS_LoadFile(litfilename, tempmempool, false, &filesize);
1776                 if (data)
1777                 {
1778                         if (filesize == (fs_offset_t)(8 + l->filelen * 3) && data[0] == 'Q' && data[1] == 'L' && data[2] == 'I' && data[3] == 'T')
1779                         {
1780                                 i = LittleLong(((int *)data)[1]);
1781                                 if (i == 1)
1782                                 {
1783                                         if (developer_loading.integer)
1784                                                 Con_Printf("loaded %s\n", litfilename);
1785                                         loadmodel->brushq1.lightdata = (unsigned char *)Mem_Alloc(loadmodel->mempool, filesize - 8);
1786                                         memcpy(loadmodel->brushq1.lightdata, data + 8, filesize - 8);
1787                                         Mem_Free(data);
1788                                         data = (unsigned char*) FS_LoadFile(dlitfilename, tempmempool, false, &filesize);
1789                                         if (data)
1790                                         {
1791                                                 if (filesize == (fs_offset_t)(8 + l->filelen * 3) && data[0] == 'Q' && data[1] == 'L' && data[2] == 'I' && data[3] == 'T')
1792                                                 {
1793                                                         i = LittleLong(((int *)data)[1]);
1794                                                         if (i == 1)
1795                                                         {
1796                                                                 if (developer_loading.integer)
1797                                                                         Con_Printf("loaded %s\n", dlitfilename);
1798                                                                 loadmodel->brushq1.nmaplightdata = (unsigned char *)Mem_Alloc(loadmodel->mempool, filesize - 8);
1799                                                                 memcpy(loadmodel->brushq1.nmaplightdata, data + 8, filesize - 8);
1800                                                                 loadmodel->brushq3.deluxemapping_modelspace = false;
1801                                                                 loadmodel->brushq3.deluxemapping = true;
1802                                                         }
1803                                                 }
1804                                                 Mem_Free(data);
1805                                                 data = NULL;
1806                                         }
1807                                         return;
1808                                 }
1809                                 else
1810                                         Con_Printf("Unknown .lit file version (%d)\n", i);
1811                         }
1812                         else if (filesize == 8)
1813                                 Con_Print("Empty .lit file, ignoring\n");
1814                         else
1815                                 Con_Printf("Corrupt .lit file (file size %i bytes, should be %i bytes), ignoring\n", (int) filesize, (int) (8 + l->filelen * 3));
1816                         if (data)
1817                         {
1818                                 Mem_Free(data);
1819                                 data = NULL;
1820                         }
1821                 }
1822                 // LordHavoc: oh well, expand the white lighting data
1823                 if (!l->filelen)
1824                         return;
1825                 loadmodel->brushq1.lightdata = (unsigned char *)Mem_Alloc(loadmodel->mempool, l->filelen*3);
1826                 in = mod_base + l->fileofs;
1827                 out = loadmodel->brushq1.lightdata;
1828                 for (i = 0;i < l->filelen;i++)
1829                 {
1830                         d = *in++;
1831                         *out++ = d;
1832                         *out++ = d;
1833                         *out++ = d;
1834                 }
1835         }
1836 }
1837
1838 static void Mod_Q1BSP_LoadVisibility(lump_t *l)
1839 {
1840         loadmodel->brushq1.num_compressedpvs = 0;
1841         loadmodel->brushq1.data_compressedpvs = NULL;
1842         if (!l->filelen)
1843                 return;
1844         loadmodel->brushq1.num_compressedpvs = l->filelen;
1845         loadmodel->brushq1.data_compressedpvs = (unsigned char *)Mem_Alloc(loadmodel->mempool, l->filelen);
1846         memcpy(loadmodel->brushq1.data_compressedpvs, mod_base + l->fileofs, l->filelen);
1847 }
1848
1849 // used only for HalfLife maps
1850 static void Mod_Q1BSP_ParseWadsFromEntityLump(const char *data)
1851 {
1852         char key[128], value[4096];
1853         int i, j, k;
1854         if (!data)
1855                 return;
1856         if (!COM_ParseToken_Simple(&data, false, false))
1857                 return; // error
1858         if (com_token[0] != '{')
1859                 return; // error
1860         while (1)
1861         {
1862                 if (!COM_ParseToken_Simple(&data, false, false))
1863                         return; // error
1864                 if (com_token[0] == '}')
1865                         break; // end of worldspawn
1866                 if (com_token[0] == '_')
1867                         strlcpy(key, com_token + 1, sizeof(key));
1868                 else
1869                         strlcpy(key, com_token, sizeof(key));
1870                 while (key[strlen(key)-1] == ' ') // remove trailing spaces
1871                         key[strlen(key)-1] = 0;
1872                 if (!COM_ParseToken_Simple(&data, false, false))
1873                         return; // error
1874                 dpsnprintf(value, sizeof(value), "%s", com_token);
1875                 if (!strcmp("wad", key)) // for HalfLife maps
1876                 {
1877                         if (loadmodel->brush.ishlbsp)
1878                         {
1879                                 j = 0;
1880                                 for (i = 0;i < (int)sizeof(value);i++)
1881                                         if (value[i] != ';' && value[i] != '\\' && value[i] != '/' && value[i] != ':')
1882                                                 break;
1883                                 if (value[i])
1884                                 {
1885                                         for (;i < (int)sizeof(value);i++)
1886                                         {
1887                                                 // ignore path - the \\ check is for HalfLife... stupid windoze 'programmers'...
1888                                                 if (value[i] == '\\' || value[i] == '/' || value[i] == ':')
1889                                                         j = i+1;
1890                                                 else if (value[i] == ';' || value[i] == 0)
1891                                                 {
1892                                                         k = value[i];
1893                                                         value[i] = 0;
1894                                                         W_LoadTextureWadFile(&value[j], false);
1895                                                         j = i+1;
1896                                                         if (!k)
1897                                                                 break;
1898                                                 }
1899                                         }
1900                                 }
1901                         }
1902                 }
1903         }
1904 }
1905
1906 static void Mod_Q1BSP_LoadEntities(lump_t *l)
1907 {
1908         loadmodel->brush.entities = NULL;
1909         if (!l->filelen)
1910                 return;
1911         loadmodel->brush.entities = (char *)Mem_Alloc(loadmodel->mempool, l->filelen + 1);
1912         memcpy(loadmodel->brush.entities, mod_base + l->fileofs, l->filelen);
1913         loadmodel->brush.entities[l->filelen] = 0;
1914         if (loadmodel->brush.ishlbsp)
1915                 Mod_Q1BSP_ParseWadsFromEntityLump(loadmodel->brush.entities);
1916 }
1917
1918
1919 static void Mod_Q1BSP_LoadVertexes(lump_t *l)
1920 {
1921         dvertex_t       *in;
1922         mvertex_t       *out;
1923         int                     i, count;
1924
1925         in = (dvertex_t *)(mod_base + l->fileofs);
1926         if (l->filelen % sizeof(*in))
1927                 Host_Error("Mod_Q1BSP_LoadVertexes: funny lump size in %s",loadmodel->name);
1928         count = l->filelen / sizeof(*in);
1929         out = (mvertex_t *)Mem_Alloc(loadmodel->mempool, count*sizeof(*out));
1930
1931         loadmodel->brushq1.vertexes = out;
1932         loadmodel->brushq1.numvertexes = count;
1933
1934         for ( i=0 ; i<count ; i++, in++, out++)
1935         {
1936                 out->position[0] = LittleFloat(in->point[0]);
1937                 out->position[1] = LittleFloat(in->point[1]);
1938                 out->position[2] = LittleFloat(in->point[2]);
1939         }
1940 }
1941
1942 // The following two functions should be removed and MSG_* or SZ_* function sets adjusted so they
1943 // can be used for this
1944 // REMOVEME
1945 int SB_ReadInt (unsigned char **buffer)
1946 {
1947         int     i;
1948         i = ((*buffer)[0]) + 256*((*buffer)[1]) + 65536*((*buffer)[2]) + 16777216*((*buffer)[3]);
1949         (*buffer) += 4;
1950         return i;
1951 }
1952
1953 // REMOVEME
1954 float SB_ReadFloat (unsigned char **buffer)
1955 {
1956         union
1957         {
1958                 int             i;
1959                 float   f;
1960         } u;
1961
1962         u.i = SB_ReadInt (buffer);
1963         return u.f;
1964 }
1965
1966 static void Mod_Q1BSP_LoadSubmodels(lump_t *l, hullinfo_t *hullinfo)
1967 {
1968         unsigned char           *index;
1969         dmodel_t        *out;
1970         int                     i, j, count;
1971
1972         index = (unsigned char *)(mod_base + l->fileofs);
1973         if (l->filelen % (48+4*hullinfo->filehulls))
1974                 Host_Error ("Mod_Q1BSP_LoadSubmodels: funny lump size in %s", loadmodel->name);
1975
1976         count = l->filelen / (48+4*hullinfo->filehulls);
1977         out = (dmodel_t *)Mem_Alloc (loadmodel->mempool, count*sizeof(*out));
1978
1979         loadmodel->brushq1.submodels = out;
1980         loadmodel->brush.numsubmodels = count;
1981
1982         for (i = 0; i < count; i++, out++)
1983         {
1984         // spread out the mins / maxs by a pixel
1985                 out->mins[0] = SB_ReadFloat (&index) - 1;
1986                 out->mins[1] = SB_ReadFloat (&index) - 1;
1987                 out->mins[2] = SB_ReadFloat (&index) - 1;
1988                 out->maxs[0] = SB_ReadFloat (&index) + 1;
1989                 out->maxs[1] = SB_ReadFloat (&index) + 1;
1990                 out->maxs[2] = SB_ReadFloat (&index) + 1;
1991                 out->origin[0] = SB_ReadFloat (&index);
1992                 out->origin[1] = SB_ReadFloat (&index);
1993                 out->origin[2] = SB_ReadFloat (&index);
1994                 for (j = 0; j < hullinfo->filehulls; j++)
1995                         out->headnode[j] = SB_ReadInt (&index);
1996                 out->visleafs = SB_ReadInt (&index);
1997                 out->firstface = SB_ReadInt (&index);
1998                 out->numfaces = SB_ReadInt (&index);
1999         }
2000 }
2001
2002 static void Mod_Q1BSP_LoadEdges(lump_t *l)
2003 {
2004         dedge_t *in;
2005         medge_t *out;
2006         int     i, count;
2007
2008         in = (dedge_t *)(mod_base + l->fileofs);
2009         if (l->filelen % sizeof(*in))
2010                 Host_Error("Mod_Q1BSP_LoadEdges: funny lump size in %s",loadmodel->name);
2011         count = l->filelen / sizeof(*in);
2012         out = (medge_t *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
2013
2014         loadmodel->brushq1.edges = out;
2015         loadmodel->brushq1.numedges = count;
2016
2017         for ( i=0 ; i<count ; i++, in++, out++)
2018         {
2019                 out->v[0] = (unsigned short)LittleShort(in->v[0]);
2020                 out->v[1] = (unsigned short)LittleShort(in->v[1]);
2021                 if (out->v[0] >= loadmodel->brushq1.numvertexes || out->v[1] >= loadmodel->brushq1.numvertexes)
2022                 {
2023                         Con_Printf("Mod_Q1BSP_LoadEdges: %s has invalid vertex indices in edge %i (vertices %i %i >= numvertices %i)\n", loadmodel->name, i, out->v[0], out->v[1], loadmodel->brushq1.numvertexes);
2024                         if(!loadmodel->brushq1.numvertexes)
2025                                 Host_Error("Mod_Q1BSP_LoadEdges: %s has edges but no vertexes, cannot fix\n", loadmodel->name);
2026
2027                         out->v[0] = 0;
2028                         out->v[1] = 0;
2029                 }
2030         }
2031 }
2032
2033 static void Mod_Q1BSP_LoadTexinfo(lump_t *l)
2034 {
2035         texinfo_t *in;
2036         mtexinfo_t *out;
2037         int i, j, k, count, miptex;
2038
2039         in = (texinfo_t *)(mod_base + l->fileofs);
2040         if (l->filelen % sizeof(*in))
2041                 Host_Error("Mod_Q1BSP_LoadTexinfo: funny lump size in %s",loadmodel->name);
2042         count = l->filelen / sizeof(*in);
2043         out = (mtexinfo_t *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
2044
2045         loadmodel->brushq1.texinfo = out;
2046         loadmodel->brushq1.numtexinfo = count;
2047
2048         for (i = 0;i < count;i++, in++, out++)
2049         {
2050                 for (k = 0;k < 2;k++)
2051                         for (j = 0;j < 4;j++)
2052                                 out->vecs[k][j] = LittleFloat(in->vecs[k][j]);
2053
2054                 miptex = LittleLong(in->miptex);
2055                 out->flags = LittleLong(in->flags);
2056
2057                 out->texture = NULL;
2058                 if (loadmodel->data_textures)
2059                 {
2060                         if ((unsigned int) miptex >= (unsigned int) loadmodel->num_textures)
2061                                 Con_Printf("error in model \"%s\": invalid miptex index %i(of %i)\n", loadmodel->name, miptex, loadmodel->num_textures);
2062                         else
2063                                 out->texture = loadmodel->data_textures + miptex;
2064                 }
2065                 if (out->flags & TEX_SPECIAL)
2066                 {
2067                         // if texture chosen is NULL or the shader needs a lightmap,
2068                         // force to notexture water shader
2069                         if (out->texture == NULL)
2070                                 out->texture = loadmodel->data_textures + (loadmodel->num_textures - 1);
2071                 }
2072                 else
2073                 {
2074                         // if texture chosen is NULL, force to notexture
2075                         if (out->texture == NULL)
2076                                 out->texture = loadmodel->data_textures + (loadmodel->num_textures - 2);
2077                 }
2078         }
2079 }
2080
2081 #if 0
2082 void BoundPoly(int numverts, float *verts, vec3_t mins, vec3_t maxs)
2083 {
2084         int             i, j;
2085         float   *v;
2086
2087         mins[0] = mins[1] = mins[2] = 9999;
2088         maxs[0] = maxs[1] = maxs[2] = -9999;
2089         v = verts;
2090         for (i = 0;i < numverts;i++)
2091         {
2092                 for (j = 0;j < 3;j++, v++)
2093                 {
2094                         if (*v < mins[j])
2095                                 mins[j] = *v;
2096                         if (*v > maxs[j])
2097                                 maxs[j] = *v;
2098                 }
2099         }
2100 }
2101
2102 #define MAX_SUBDIVPOLYTRIANGLES 4096
2103 #define MAX_SUBDIVPOLYVERTS(MAX_SUBDIVPOLYTRIANGLES * 3)
2104
2105 static int subdivpolyverts, subdivpolytriangles;
2106 static int subdivpolyindex[MAX_SUBDIVPOLYTRIANGLES][3];
2107 static float subdivpolyvert[MAX_SUBDIVPOLYVERTS][3];
2108
2109 static int subdivpolylookupvert(vec3_t v)
2110 {
2111         int i;
2112         for (i = 0;i < subdivpolyverts;i++)
2113                 if (subdivpolyvert[i][0] == v[0]
2114                  && subdivpolyvert[i][1] == v[1]
2115                  && subdivpolyvert[i][2] == v[2])
2116                         return i;
2117         if (subdivpolyverts >= MAX_SUBDIVPOLYVERTS)
2118                 Host_Error("SubDividePolygon: ran out of vertices in buffer, please increase your r_subdivide_size");
2119         VectorCopy(v, subdivpolyvert[subdivpolyverts]);
2120         return subdivpolyverts++;
2121 }
2122
2123 static void SubdividePolygon(int numverts, float *verts)
2124 {
2125         int             i, i1, i2, i3, f, b, c, p;
2126         vec3_t  mins, maxs, front[256], back[256];
2127         float   m, *pv, *cv, dist[256], frac;
2128
2129         if (numverts > 250)
2130                 Host_Error("SubdividePolygon: ran out of verts in buffer");
2131
2132         BoundPoly(numverts, verts, mins, maxs);
2133
2134         for (i = 0;i < 3;i++)
2135         {
2136                 m = (mins[i] + maxs[i]) * 0.5;
2137                 m = r_subdivide_size.value * floor(m/r_subdivide_size.value + 0.5);
2138                 if (maxs[i] - m < 8)
2139                         continue;
2140                 if (m - mins[i] < 8)
2141                         continue;
2142
2143                 // cut it
2144                 for (cv = verts, c = 0;c < numverts;c++, cv += 3)
2145                         dist[c] = cv[i] - m;
2146
2147                 f = b = 0;
2148                 for (p = numverts - 1, c = 0, pv = verts + p * 3, cv = verts;c < numverts;p = c, c++, pv = cv, cv += 3)
2149                 {
2150                         if (dist[p] >= 0)
2151                         {
2152                                 VectorCopy(pv, front[f]);
2153                                 f++;
2154                         }
2155                         if (dist[p] <= 0)
2156                         {
2157                                 VectorCopy(pv, back[b]);
2158                                 b++;
2159                         }
2160                         if (dist[p] == 0 || dist[c] == 0)
2161                                 continue;
2162                         if ((dist[p] > 0) != (dist[c] > 0) )
2163                         {
2164                                 // clip point
2165                                 frac = dist[p] / (dist[p] - dist[c]);
2166                                 front[f][0] = back[b][0] = pv[0] + frac * (cv[0] - pv[0]);
2167                                 front[f][1] = back[b][1] = pv[1] + frac * (cv[1] - pv[1]);
2168                                 front[f][2] = back[b][2] = pv[2] + frac * (cv[2] - pv[2]);
2169                                 f++;
2170                                 b++;
2171                         }
2172                 }
2173
2174                 SubdividePolygon(f, front[0]);
2175                 SubdividePolygon(b, back[0]);
2176                 return;
2177         }
2178
2179         i1 = subdivpolylookupvert(verts);
2180         i2 = subdivpolylookupvert(verts + 3);
2181         for (i = 2;i < numverts;i++)
2182         {
2183                 if (subdivpolytriangles >= MAX_SUBDIVPOLYTRIANGLES)
2184                 {
2185                         Con_Print("SubdividePolygon: ran out of triangles in buffer, please increase your r_subdivide_size\n");
2186                         return;
2187                 }
2188
2189                 i3 = subdivpolylookupvert(verts + i * 3);
2190                 subdivpolyindex[subdivpolytriangles][0] = i1;
2191                 subdivpolyindex[subdivpolytriangles][1] = i2;
2192                 subdivpolyindex[subdivpolytriangles][2] = i3;
2193                 i2 = i3;
2194                 subdivpolytriangles++;
2195         }
2196 }
2197
2198 //Breaks a polygon up along axial 64 unit
2199 //boundaries so that turbulent and sky warps
2200 //can be done reasonably.
2201 static void Mod_Q1BSP_GenerateWarpMesh(msurface_t *surface)
2202 {
2203         int i, j;
2204         surfvertex_t *v;
2205         surfmesh_t *mesh;
2206
2207         subdivpolytriangles = 0;
2208         subdivpolyverts = 0;
2209         SubdividePolygon(surface->num_vertices, (surface->mesh->data_vertex3f + 3 * surface->num_firstvertex));
2210         if (subdivpolytriangles < 1)
2211                 Host_Error("Mod_Q1BSP_GenerateWarpMesh: no triangles?");
2212
2213         surface->mesh = mesh = Mem_Alloc(loadmodel->mempool, sizeof(surfmesh_t) + subdivpolytriangles * sizeof(int[3]) + subdivpolyverts * sizeof(surfvertex_t));
2214         mesh->num_vertices = subdivpolyverts;
2215         mesh->num_triangles = subdivpolytriangles;
2216         mesh->vertex = (surfvertex_t *)(mesh + 1);
2217         mesh->index = (int *)(mesh->vertex + mesh->num_vertices);
2218         memset(mesh->vertex, 0, mesh->num_vertices * sizeof(surfvertex_t));
2219
2220         for (i = 0;i < mesh->num_triangles;i++)
2221                 for (j = 0;j < 3;j++)
2222                         mesh->index[i*3+j] = subdivpolyindex[i][j];
2223
2224         for (i = 0, v = mesh->vertex;i < subdivpolyverts;i++, v++)
2225         {
2226                 VectorCopy(subdivpolyvert[i], v->v);
2227                 v->st[0] = DotProduct(v->v, surface->lightmapinfo->texinfo->vecs[0]);
2228                 v->st[1] = DotProduct(v->v, surface->lightmapinfo->texinfo->vecs[1]);
2229         }
2230 }
2231 #endif
2232
2233 extern cvar_t gl_max_lightmapsize;
2234 static void Mod_Q1BSP_LoadFaces(lump_t *l)
2235 {
2236         dface_t *in;
2237         msurface_t *surface;
2238         int i, j, count, surfacenum, planenum, smax, tmax, ssize, tsize, firstedge, numedges, totalverts, totaltris, lightmapnumber, lightmapsize, totallightmapsamples;
2239         float texmins[2], texmaxs[2], val;
2240         rtexture_t *lightmaptexture, *deluxemaptexture;
2241
2242         in = (dface_t *)(mod_base + l->fileofs);
2243         if (l->filelen % sizeof(*in))
2244                 Host_Error("Mod_Q1BSP_LoadFaces: funny lump size in %s",loadmodel->name);
2245         count = l->filelen / sizeof(*in);
2246         loadmodel->data_surfaces = (msurface_t *)Mem_Alloc(loadmodel->mempool, count*sizeof(msurface_t));
2247         loadmodel->data_surfaces_lightmapinfo = (msurface_lightmapinfo_t *)Mem_Alloc(loadmodel->mempool, count*sizeof(msurface_lightmapinfo_t));
2248
2249         loadmodel->num_surfaces = count;
2250
2251         loadmodel->brushq1.lightmapupdateflags = (unsigned char *)Mem_Alloc(loadmodel->mempool, count*sizeof(unsigned char));
2252
2253         totalverts = 0;
2254         totaltris = 0;
2255         for (surfacenum = 0, in = (dface_t *)(mod_base + l->fileofs);surfacenum < count;surfacenum++, in++)
2256         {
2257                 numedges = (unsigned short)LittleShort(in->numedges);
2258                 totalverts += numedges;
2259                 totaltris += numedges - 2;
2260         }
2261
2262         Mod_AllocSurfMesh(loadmodel->mempool, totalverts, totaltris, true, false, false);
2263
2264         lightmaptexture = NULL;
2265         deluxemaptexture = r_texture_blanknormalmap;
2266         lightmapnumber = 0;
2267         lightmapsize = bound(256, gl_max_lightmapsize.integer, (int)vid.maxtexturesize_2d);
2268         totallightmapsamples = 0;
2269
2270         totalverts = 0;
2271         totaltris = 0;
2272         for (surfacenum = 0, in = (dface_t *)(mod_base + l->fileofs), surface = loadmodel->data_surfaces;surfacenum < count;surfacenum++, in++, surface++)
2273         {
2274                 surface->lightmapinfo = loadmodel->data_surfaces_lightmapinfo + surfacenum;
2275
2276                 // FIXME: validate edges, texinfo, etc?
2277                 firstedge = LittleLong(in->firstedge);
2278                 numedges = (unsigned short)LittleShort(in->numedges);
2279                 if ((unsigned int) firstedge > (unsigned int) loadmodel->brushq1.numsurfedges || (unsigned int) numedges > (unsigned int) loadmodel->brushq1.numsurfedges || (unsigned int) firstedge + (unsigned int) numedges > (unsigned int) loadmodel->brushq1.numsurfedges)
2280                         Host_Error("Mod_Q1BSP_LoadFaces: invalid edge range (firstedge %i, numedges %i, model edges %i)", firstedge, numedges, loadmodel->brushq1.numsurfedges);
2281                 i = (unsigned short)LittleShort(in->texinfo);
2282                 if ((unsigned int) i >= (unsigned int) loadmodel->brushq1.numtexinfo)
2283                         Host_Error("Mod_Q1BSP_LoadFaces: invalid texinfo index %i(model has %i texinfos)", i, loadmodel->brushq1.numtexinfo);
2284                 surface->lightmapinfo->texinfo = loadmodel->brushq1.texinfo + i;
2285                 surface->texture = surface->lightmapinfo->texinfo->texture;
2286
2287                 planenum = (unsigned short)LittleShort(in->planenum);
2288                 if ((unsigned int) planenum >= (unsigned int) loadmodel->brush.num_planes)
2289                         Host_Error("Mod_Q1BSP_LoadFaces: invalid plane index %i (model has %i planes)", planenum, loadmodel->brush.num_planes);
2290
2291                 //surface->flags = surface->texture->flags;
2292                 //if (LittleShort(in->side))
2293                 //      surface->flags |= SURF_PLANEBACK;
2294                 //surface->plane = loadmodel->brush.data_planes + planenum;
2295
2296                 surface->num_firstvertex = totalverts;
2297                 surface->num_vertices = numedges;
2298                 surface->num_firsttriangle = totaltris;
2299                 surface->num_triangles = numedges - 2;
2300                 totalverts += numedges;
2301                 totaltris += numedges - 2;
2302
2303                 // convert edges back to a normal polygon
2304                 for (i = 0;i < surface->num_vertices;i++)
2305                 {
2306                         int lindex = loadmodel->brushq1.surfedges[firstedge + i];
2307                         float s, t;
2308                         // note: the q1bsp format does not allow a 0 surfedge (it would have no negative counterpart)
2309                         if (lindex >= 0)
2310                                 VectorCopy(loadmodel->brushq1.vertexes[loadmodel->brushq1.edges[lindex].v[0]].position, (loadmodel->surfmesh.data_vertex3f + 3 * surface->num_firstvertex) + i * 3);
2311                         else
2312                                 VectorCopy(loadmodel->brushq1.vertexes[loadmodel->brushq1.edges[-lindex].v[1]].position, (loadmodel->surfmesh.data_vertex3f + 3 * surface->num_firstvertex) + i * 3);
2313                         s = DotProduct(((loadmodel->surfmesh.data_vertex3f + 3 * surface->num_firstvertex) + i * 3), surface->lightmapinfo->texinfo->vecs[0]) + surface->lightmapinfo->texinfo->vecs[0][3];
2314                         t = DotProduct(((loadmodel->surfmesh.data_vertex3f + 3 * surface->num_firstvertex) + i * 3), surface->lightmapinfo->texinfo->vecs[1]) + surface->lightmapinfo->texinfo->vecs[1][3];
2315                         (loadmodel->surfmesh.data_texcoordtexture2f + 2 * surface->num_firstvertex)[i * 2 + 0] = s / surface->texture->width;
2316                         (loadmodel->surfmesh.data_texcoordtexture2f + 2 * surface->num_firstvertex)[i * 2 + 1] = t / surface->texture->height;
2317                         (loadmodel->surfmesh.data_texcoordlightmap2f + 2 * surface->num_firstvertex)[i * 2 + 0] = 0;
2318                         (loadmodel->surfmesh.data_texcoordlightmap2f + 2 * surface->num_firstvertex)[i * 2 + 1] = 0;
2319                         (loadmodel->surfmesh.data_lightmapoffsets + surface->num_firstvertex)[i] = 0;
2320                 }
2321
2322                 for (i = 0;i < surface->num_triangles;i++)
2323                 {
2324                         (loadmodel->surfmesh.data_element3i + 3 * surface->num_firsttriangle)[i * 3 + 0] = 0 + surface->num_firstvertex;
2325                         (loadmodel->surfmesh.data_element3i + 3 * surface->num_firsttriangle)[i * 3 + 1] = i + 1 + surface->num_firstvertex;
2326                         (loadmodel->surfmesh.data_element3i + 3 * surface->num_firsttriangle)[i * 3 + 2] = i + 2 + surface->num_firstvertex;
2327                 }
2328
2329                 // compile additional data about the surface geometry
2330                 Mod_BuildNormals(surface->num_firstvertex, surface->num_vertices, surface->num_triangles, loadmodel->surfmesh.data_vertex3f, (loadmodel->surfmesh.data_element3i + 3 * surface->num_firsttriangle), loadmodel->surfmesh.data_normal3f, true);
2331                 Mod_BuildTextureVectorsFromNormals(surface->num_firstvertex, surface->num_vertices, surface->num_triangles, loadmodel->surfmesh.data_vertex3f, loadmodel->surfmesh.data_texcoordtexture2f, loadmodel->surfmesh.data_normal3f, (loadmodel->surfmesh.data_element3i + 3 * surface->num_firsttriangle), loadmodel->surfmesh.data_svector3f, loadmodel->surfmesh.data_tvector3f, true);
2332                 BoxFromPoints(surface->mins, surface->maxs, surface->num_vertices, (loadmodel->surfmesh.data_vertex3f + 3 * surface->num_firstvertex));
2333
2334                 // generate surface extents information
2335                 texmins[0] = texmaxs[0] = DotProduct((loadmodel->surfmesh.data_vertex3f + 3 * surface->num_firstvertex), surface->lightmapinfo->texinfo->vecs[0]) + surface->lightmapinfo->texinfo->vecs[0][3];
2336                 texmins[1] = texmaxs[1] = DotProduct((loadmodel->surfmesh.data_vertex3f + 3 * surface->num_firstvertex), surface->lightmapinfo->texinfo->vecs[1]) + surface->lightmapinfo->texinfo->vecs[1][3];
2337                 for (i = 1;i < surface->num_vertices;i++)
2338                 {
2339                         for (j = 0;j < 2;j++)
2340                         {
2341                                 val = DotProduct((loadmodel->surfmesh.data_vertex3f + 3 * surface->num_firstvertex) + i * 3, surface->lightmapinfo->texinfo->vecs[j]) + surface->lightmapinfo->texinfo->vecs[j][3];
2342                                 texmins[j] = min(texmins[j], val);
2343                                 texmaxs[j] = max(texmaxs[j], val);
2344                         }
2345                 }
2346                 for (i = 0;i < 2;i++)
2347                 {
2348                         surface->lightmapinfo->texturemins[i] = (int) floor(texmins[i] / 16.0) * 16;
2349                         surface->lightmapinfo->extents[i] = (int) ceil(texmaxs[i] / 16.0) * 16 - surface->lightmapinfo->texturemins[i];
2350                 }
2351
2352                 smax = surface->lightmapinfo->extents[0] >> 4;
2353                 tmax = surface->lightmapinfo->extents[1] >> 4;
2354                 ssize = (surface->lightmapinfo->extents[0] >> 4) + 1;
2355                 tsize = (surface->lightmapinfo->extents[1] >> 4) + 1;
2356
2357                 // lighting info
2358                 for (i = 0;i < MAXLIGHTMAPS;i++)
2359                         surface->lightmapinfo->styles[i] = in->styles[i];
2360                 surface->lightmaptexture = NULL;
2361                 surface->deluxemaptexture = r_texture_blanknormalmap;
2362                 i = LittleLong(in->lightofs);
2363                 if (i == -1)
2364                 {
2365                         surface->lightmapinfo->samples = NULL;
2366 #if 1
2367                         // give non-lightmapped water a 1x white lightmap
2368                         if (surface->texture->name[0] == '*' && (surface->lightmapinfo->texinfo->flags & TEX_SPECIAL) && ssize <= 256 && tsize <= 256)
2369                         {
2370                                 surface->lightmapinfo->samples = (unsigned char *)Mem_Alloc(loadmodel->mempool, ssize * tsize * 3);
2371                                 surface->lightmapinfo->styles[0] = 0;
2372                                 memset(surface->lightmapinfo->samples, 128, ssize * tsize * 3);
2373                         }
2374 #endif
2375                 }
2376                 else if (loadmodel->brush.ishlbsp) // LordHavoc: HalfLife map (bsp version 30)
2377                         surface->lightmapinfo->samples = loadmodel->brushq1.lightdata + i;
2378                 else // LordHavoc: white lighting (bsp version 29)
2379                 {
2380                         surface->lightmapinfo->samples = loadmodel->brushq1.lightdata + (i * 3);
2381                         if (loadmodel->brushq1.nmaplightdata)
2382                                 surface->lightmapinfo->nmapsamples = loadmodel->brushq1.nmaplightdata + (i * 3);
2383                 }
2384
2385                 // check if we should apply a lightmap to this
2386                 if (!(surface->lightmapinfo->texinfo->flags & TEX_SPECIAL) || surface->lightmapinfo->samples)
2387                 {
2388                         if (ssize > 256 || tsize > 256)
2389                                 Host_Error("Bad surface extents");
2390
2391                         if (lightmapsize < ssize)
2392                                 lightmapsize = ssize;
2393                         if (lightmapsize < tsize)
2394                                 lightmapsize = tsize;
2395
2396                         totallightmapsamples += ssize*tsize;
2397
2398                         // force lightmap upload on first time seeing the surface
2399                         //
2400                         // additionally this is used by the later code to see if a
2401                         // lightmap is needed on this surface (rather than duplicating the
2402                         // logic above)
2403                         loadmodel->brushq1.lightmapupdateflags[surfacenum] = true;
2404                 }
2405         }
2406
2407         // small maps (such as ammo boxes especially) don't need big lightmap
2408         // textures, so this code tries to guess a good size based on
2409         // totallightmapsamples (size of the lightmaps lump basically), as well as
2410         // trying to max out the size if there is a lot of lightmap data to store
2411         // additionally, never choose a lightmapsize that is smaller than the
2412         // largest surface encountered (as it would fail)
2413         i = lightmapsize;
2414         for (lightmapsize = 64; (lightmapsize < i) && (lightmapsize < bound(128, gl_max_lightmapsize.integer, (int)vid.maxtexturesize_2d)) && (totallightmapsamples > lightmapsize*lightmapsize); lightmapsize*=2)
2415                 ;
2416
2417         // now that we've decided the lightmap texture size, we can do the rest
2418         if (cls.state != ca_dedicated)
2419         {
2420                 int stainmapsize = 0;
2421                 mod_alloclightmap_state_t allocState;
2422
2423                 Mod_AllocLightmap_Init(&allocState, lightmapsize, lightmapsize);
2424                 for (surfacenum = 0, surface = loadmodel->data_surfaces;surfacenum < count;surfacenum++, surface++)
2425                 {
2426                         int i, iu, iv, lightmapx = 0, lightmapy = 0;
2427                         float u, v, ubase, vbase, uscale, vscale;
2428
2429                         if (!loadmodel->brushq1.lightmapupdateflags[surfacenum])
2430                                 continue;
2431
2432                         smax = surface->lightmapinfo->extents[0] >> 4;
2433                         tmax = surface->lightmapinfo->extents[1] >> 4;
2434                         ssize = (surface->lightmapinfo->extents[0] >> 4) + 1;
2435                         tsize = (surface->lightmapinfo->extents[1] >> 4) + 1;
2436                         stainmapsize += ssize * tsize * 3;
2437
2438                         if (!lightmaptexture || !Mod_AllocLightmap_Block(&allocState, ssize, tsize, &lightmapx, &lightmapy))
2439                         {
2440                                 // allocate a texture pool if we need it
2441                                 if (loadmodel->texturepool == NULL)
2442                                         loadmodel->texturepool = R_AllocTexturePool();
2443                                 // could not find room, make a new lightmap
2444                                 loadmodel->brushq3.num_mergedlightmaps = lightmapnumber + 1;
2445                                 loadmodel->brushq3.data_lightmaps = Mem_Realloc(loadmodel->mempool, loadmodel->brushq3.data_lightmaps, loadmodel->brushq3.num_mergedlightmaps * sizeof(loadmodel->brushq3.data_lightmaps[0]));
2446                                 loadmodel->brushq3.data_deluxemaps = Mem_Realloc(loadmodel->mempool, loadmodel->brushq3.data_deluxemaps, loadmodel->brushq3.num_mergedlightmaps * sizeof(loadmodel->brushq3.data_deluxemaps[0]));
2447                                 loadmodel->brushq3.data_lightmaps[lightmapnumber] = lightmaptexture = R_LoadTexture2D(loadmodel->texturepool, va("lightmap%i", lightmapnumber), lightmapsize, lightmapsize, NULL, TEXTYPE_BGRA, TEXF_FORCELINEAR | TEXF_ALLOWUPDATES | TEXF_MANUALFLUSHUPDATES, NULL);
2448                                 if (loadmodel->brushq1.nmaplightdata)
2449                                         loadmodel->brushq3.data_deluxemaps[lightmapnumber] = deluxemaptexture = R_LoadTexture2D(loadmodel->texturepool, va("deluxemap%i", lightmapnumber), lightmapsize, lightmapsize, NULL, TEXTYPE_BGRA, TEXF_FORCELINEAR | TEXF_ALLOWUPDATES | TEXF_MANUALFLUSHUPDATES, NULL);
2450                                 lightmapnumber++;
2451                                 Mod_AllocLightmap_Reset(&allocState);
2452                                 Mod_AllocLightmap_Block(&allocState, ssize, tsize, &lightmapx, &lightmapy);
2453                         }
2454                         surface->lightmaptexture = lightmaptexture;
2455                         surface->deluxemaptexture = deluxemaptexture;
2456                         surface->lightmapinfo->lightmaporigin[0] = lightmapx;
2457                         surface->lightmapinfo->lightmaporigin[1] = lightmapy;
2458
2459                         uscale = 1.0f / (float)lightmapsize;
2460                         vscale = 1.0f / (float)lightmapsize;
2461                         ubase = lightmapx * uscale;
2462                         vbase = lightmapy * vscale;
2463
2464                         for (i = 0;i < surface->num_vertices;i++)
2465                         {
2466                                 u = ((DotProduct(((loadmodel->surfmesh.data_vertex3f + 3 * surface->num_firstvertex) + i * 3), surface->lightmapinfo->texinfo->vecs[0]) + surface->lightmapinfo->texinfo->vecs[0][3]) + 8 - surface->lightmapinfo->texturemins[0]) * (1.0 / 16.0);
2467                                 v = ((DotProduct(((loadmodel->surfmesh.data_vertex3f + 3 * surface->num_firstvertex) + i * 3), surface->lightmapinfo->texinfo->vecs[1]) + surface->lightmapinfo->texinfo->vecs[1][3]) + 8 - surface->lightmapinfo->texturemins[1]) * (1.0 / 16.0);
2468                                 (loadmodel->surfmesh.data_texcoordlightmap2f + 2 * surface->num_firstvertex)[i * 2 + 0] = u * uscale + ubase;
2469                                 (loadmodel->surfmesh.data_texcoordlightmap2f + 2 * surface->num_firstvertex)[i * 2 + 1] = v * vscale + vbase;
2470                                 // LordHavoc: calc lightmap data offset for vertex lighting to use
2471                                 iu = (int) u;
2472                                 iv = (int) v;
2473                                 (loadmodel->surfmesh.data_lightmapoffsets + surface->num_firstvertex)[i] = (bound(0, iv, tmax) * ssize + bound(0, iu, smax)) * 3;
2474                         }
2475                 }
2476
2477                 if (cl_stainmaps.integer)
2478                 {
2479                         // allocate stainmaps for permanent marks on walls and clear white
2480                         unsigned char *stainsamples = NULL;
2481                         stainsamples = (unsigned char *)Mem_Alloc(loadmodel->mempool, stainmapsize);
2482                         memset(stainsamples, 255, stainmapsize);
2483                         // assign pointers
2484                         for (surfacenum = 0, surface = loadmodel->data_surfaces;surfacenum < count;surfacenum++, surface++)
2485                         {
2486                                 if (!loadmodel->brushq1.lightmapupdateflags[surfacenum])
2487                                         continue;
2488                                 ssize = (surface->lightmapinfo->extents[0] >> 4) + 1;
2489                                 tsize = (surface->lightmapinfo->extents[1] >> 4) + 1;
2490                                 surface->lightmapinfo->stainsamples = stainsamples;
2491                                 stainsamples += ssize * tsize * 3;
2492                         }
2493                 }
2494         }
2495
2496         // generate ushort elements array if possible
2497         if (loadmodel->surfmesh.data_element3s)
2498                 for (i = 0;i < loadmodel->surfmesh.num_triangles*3;i++)
2499                         loadmodel->surfmesh.data_element3s[i] = loadmodel->surfmesh.data_element3i[i];
2500 }
2501
2502 static void Mod_Q1BSP_LoadNodes_RecursiveSetParent(mnode_t *node, mnode_t *parent)
2503 {
2504         //if (node->parent)
2505         //      Host_Error("Mod_Q1BSP_LoadNodes_RecursiveSetParent: runaway recursion");
2506         node->parent = parent;
2507         if (node->plane)
2508         {
2509                 // this is a node, recurse to children
2510                 Mod_Q1BSP_LoadNodes_RecursiveSetParent(node->children[0], node);
2511                 Mod_Q1BSP_LoadNodes_RecursiveSetParent(node->children[1], node);
2512                 // combine supercontents of children
2513                 node->combinedsupercontents = node->children[0]->combinedsupercontents | node->children[1]->combinedsupercontents;
2514         }
2515         else
2516         {
2517                 int j;
2518                 mleaf_t *leaf = (mleaf_t *)node;
2519                 // if this is a leaf, calculate supercontents mask from all collidable
2520                 // primitives in the leaf (brushes and collision surfaces)
2521                 // also flag if the leaf contains any collision surfaces
2522                 leaf->combinedsupercontents = 0;
2523                 // combine the supercontents values of all brushes in this leaf
2524                 for (j = 0;j < leaf->numleafbrushes;j++)
2525                         leaf->combinedsupercontents |= loadmodel->brush.data_brushes[leaf->firstleafbrush[j]].texture->supercontents;
2526                 // check if this leaf contains any collision surfaces (q3 patches)
2527                 for (j = 0;j < leaf->numleafsurfaces;j++)
2528                 {
2529                         msurface_t *surface = loadmodel->data_surfaces + leaf->firstleafsurface[j];
2530                         if (surface->num_collisiontriangles)
2531                         {
2532                                 leaf->containscollisionsurfaces = true;
2533                                 leaf->combinedsupercontents |= surface->texture->supercontents;
2534                         }
2535                 }
2536         }
2537 }
2538
2539 static void Mod_Q1BSP_LoadNodes(lump_t *l)
2540 {
2541         int                     i, j, count, p;
2542         dnode_t         *in;
2543         mnode_t         *out;
2544
2545         in = (dnode_t *)(mod_base + l->fileofs);
2546         if (l->filelen % sizeof(*in))
2547                 Host_Error("Mod_Q1BSP_LoadNodes: funny lump size in %s",loadmodel->name);
2548         count = l->filelen / sizeof(*in);
2549         out = (mnode_t *)Mem_Alloc(loadmodel->mempool, count*sizeof(*out));
2550
2551         loadmodel->brush.data_nodes = out;
2552         loadmodel->brush.num_nodes = count;
2553
2554         for ( i=0 ; i<count ; i++, in++, out++)
2555         {
2556                 for (j=0 ; j<3 ; j++)
2557                 {
2558                         out->mins[j] = LittleShort(in->mins[j]);
2559                         out->maxs[j] = LittleShort(in->maxs[j]);
2560                 }
2561
2562                 p = LittleLong(in->planenum);
2563                 out->plane = loadmodel->brush.data_planes + p;
2564
2565                 out->firstsurface = (unsigned short)LittleShort(in->firstface);
2566                 out->numsurfaces = (unsigned short)LittleShort(in->numfaces);
2567
2568                 for (j=0 ; j<2 ; j++)
2569                 {
2570                         // LordHavoc: this code supports broken bsp files produced by
2571                         // arguire qbsp which can produce more than 32768 nodes, any value
2572                         // below count is assumed to be a node number, any other value is
2573                         // assumed to be a leaf number
2574                         p = (unsigned short)LittleShort(in->children[j]);
2575                         if (p < count)
2576                         {
2577                                 if (p < loadmodel->brush.num_nodes)
2578                                         out->children[j] = loadmodel->brush.data_nodes + p;
2579                                 else
2580                                 {
2581                                         Con_Printf("Mod_Q1BSP_LoadNodes: invalid node index %i (file has only %i nodes)\n", p, loadmodel->brush.num_nodes);
2582                                         // map it to the solid leaf
2583                                         out->children[j] = (mnode_t *)loadmodel->brush.data_leafs;
2584                                 }
2585                         }
2586                         else
2587                         {
2588                                 // note this uses 65535 intentionally, -1 is leaf 0
2589                                 p = 65535 - p;
2590                                 if (p < loadmodel->brush.num_leafs)
2591                                         out->children[j] = (mnode_t *)(loadmodel->brush.data_leafs + p);
2592                                 else
2593                                 {
2594                                         Con_Printf("Mod_Q1BSP_LoadNodes: invalid leaf index %i (file has only %i leafs)\n", p, loadmodel->brush.num_leafs);
2595                                         // map it to the solid leaf
2596                                         out->children[j] = (mnode_t *)loadmodel->brush.data_leafs;
2597                                 }
2598                         }
2599                 }
2600         }
2601
2602         Mod_Q1BSP_LoadNodes_RecursiveSetParent(loadmodel->brush.data_nodes, NULL);      // sets nodes and leafs
2603 }
2604
2605 static void Mod_Q1BSP_LoadLeafs(lump_t *l)
2606 {
2607         dleaf_t *in;
2608         mleaf_t *out;
2609         int i, j, count, p;
2610
2611         in = (dleaf_t *)(mod_base + l->fileofs);
2612         if (l->filelen % sizeof(*in))
2613                 Host_Error("Mod_Q1BSP_LoadLeafs: funny lump size in %s",loadmodel->name);
2614         count = l->filelen / sizeof(*in);
2615         out = (mleaf_t *)Mem_Alloc(loadmodel->mempool, count*sizeof(*out));
2616
2617         loadmodel->brush.data_leafs = out;
2618         loadmodel->brush.num_leafs = count;
2619         // get visleafs from the submodel data
2620         loadmodel->brush.num_pvsclusters = loadmodel->brushq1.submodels[0].visleafs;
2621         loadmodel->brush.num_pvsclusterbytes = (loadmodel->brush.num_pvsclusters+7)>>3;
2622         loadmodel->brush.data_pvsclusters = (unsigned char *)Mem_Alloc(loadmodel->mempool, loadmodel->brush.num_pvsclusters * loadmodel->brush.num_pvsclusterbytes);
2623         memset(loadmodel->brush.data_pvsclusters, 0xFF, loadmodel->brush.num_pvsclusters * loadmodel->brush.num_pvsclusterbytes);
2624
2625         for ( i=0 ; i<count ; i++, in++, out++)
2626         {
2627                 for (j=0 ; j<3 ; j++)
2628                 {
2629                         out->mins[j] = LittleShort(in->mins[j]);
2630                         out->maxs[j] = LittleShort(in->maxs[j]);
2631                 }
2632
2633                 // FIXME: this function could really benefit from some error checking
2634
2635                 out->contents = LittleLong(in->contents);
2636
2637                 out->firstleafsurface = loadmodel->brush.data_leafsurfaces + (unsigned short)LittleShort(in->firstmarksurface);
2638                 out->numleafsurfaces = (unsigned short)LittleShort(in->nummarksurfaces);
2639                 if ((unsigned short)LittleShort(in->firstmarksurface) + out->numleafsurfaces > loadmodel->brush.num_leafsurfaces)
2640                 {
2641                         Con_Printf("Mod_Q1BSP_LoadLeafs: invalid leafsurface range %i:%i outside range %i:%i\n", (int)(out->firstleafsurface - loadmodel->brush.data_leafsurfaces), (int)(out->firstleafsurface + out->numleafsurfaces - loadmodel->brush.data_leafsurfaces), 0, loadmodel->brush.num_leafsurfaces);
2642                         out->firstleafsurface = NULL;
2643                         out->numleafsurfaces = 0;
2644                 }
2645
2646                 out->clusterindex = i - 1;
2647                 if (out->clusterindex >= loadmodel->brush.num_pvsclusters)
2648                         out->clusterindex = -1;
2649
2650                 p = LittleLong(in->visofs);
2651                 // ignore visofs errors on leaf 0 (solid)
2652                 if (p >= 0 && out->clusterindex >= 0)
2653                 {
2654                         if (p >= loadmodel->brushq1.num_compressedpvs)
2655                                 Con_Print("Mod_Q1BSP_LoadLeafs: invalid visofs\n");
2656                         else
2657                                 Mod_Q1BSP_DecompressVis(loadmodel->brushq1.data_compressedpvs + p, loadmodel->brushq1.data_compressedpvs + loadmodel->brushq1.num_compressedpvs, loadmodel->brush.data_pvsclusters + out->clusterindex * loadmodel->brush.num_pvsclusterbytes, loadmodel->brush.data_pvsclusters + (out->clusterindex + 1) * loadmodel->brush.num_pvsclusterbytes);
2658                 }
2659
2660                 for (j = 0;j < 4;j++)
2661                         out->ambient_sound_level[j] = in->ambient_level[j];
2662
2663                 // FIXME: Insert caustics here
2664         }
2665 }
2666
2667 qboolean Mod_Q1BSP_CheckWaterAlphaSupport(void)
2668 {
2669         int i, j;
2670         mleaf_t *leaf;
2671         const unsigned char *pvs;
2672         // if there's no vis data, assume supported (because everything is visible all the time)
2673         if (!loadmodel->brush.data_pvsclusters)
2674                 return true;
2675         // check all liquid leafs to see if they can see into empty leafs, if any
2676         // can we can assume this map supports r_wateralpha
2677         for (i = 0, leaf = loadmodel->brush.data_leafs;i < loadmodel->brush.num_leafs;i++, leaf++)
2678         {
2679                 if ((leaf->contents == CONTENTS_WATER || leaf->contents == CONTENTS_SLIME) && leaf->clusterindex >= 0)
2680                 {
2681                         pvs = loadmodel->brush.data_pvsclusters + leaf->clusterindex * loadmodel->brush.num_pvsclusterbytes;
2682                         for (j = 0;j < loadmodel->brush.num_leafs;j++)
2683                                 if (CHECKPVSBIT(pvs, loadmodel->brush.data_leafs[j].clusterindex) && loadmodel->brush.data_leafs[j].contents == CONTENTS_EMPTY)
2684                                         return true;
2685                 }
2686         }
2687         return false;
2688 }
2689
2690 static void Mod_Q1BSP_LoadClipnodes(lump_t *l, hullinfo_t *hullinfo)
2691 {
2692         dclipnode_t *in;
2693         mclipnode_t *out;
2694         int                     i, count;
2695         hull_t          *hull;
2696
2697         in = (dclipnode_t *)(mod_base + l->fileofs);
2698         if (l->filelen % sizeof(*in))
2699                 Host_Error("Mod_Q1BSP_LoadClipnodes: funny lump size in %s",loadmodel->name);
2700         count = l->filelen / sizeof(*in);
2701         out = (mclipnode_t *)Mem_Alloc(loadmodel->mempool, count*sizeof(*out));
2702
2703         loadmodel->brushq1.clipnodes = out;
2704         loadmodel->brushq1.numclipnodes = count;
2705
2706         for (i = 1; i < MAX_MAP_HULLS; i++)
2707         {
2708                 hull = &loadmodel->brushq1.hulls[i];
2709                 hull->clipnodes = out;
2710                 hull->firstclipnode = 0;
2711                 hull->lastclipnode = count-1;
2712                 hull->planes = loadmodel->brush.data_planes;
2713                 hull->clip_mins[0] = hullinfo->hullsizes[i][0][0];
2714                 hull->clip_mins[1] = hullinfo->hullsizes[i][0][1];
2715                 hull->clip_mins[2] = hullinfo->hullsizes[i][0][2];
2716                 hull->clip_maxs[0] = hullinfo->hullsizes[i][1][0];
2717                 hull->clip_maxs[1] = hullinfo->hullsizes[i][1][1];
2718                 hull->clip_maxs[2] = hullinfo->hullsizes[i][1][2];
2719                 VectorSubtract(hull->clip_maxs, hull->clip_mins, hull->clip_size);
2720         }
2721
2722         for (i=0 ; i<count ; i++, out++, in++)
2723         {
2724                 out->planenum = LittleLong(in->planenum);
2725                 // LordHavoc: this code supports arguire qbsp's broken clipnodes indices (more than 32768 clipnodes), values above count are assumed to be contents values
2726                 out->children[0] = (unsigned short)LittleShort(in->children[0]);
2727                 out->children[1] = (unsigned short)LittleShort(in->children[1]);
2728                 if (out->children[0] >= count)
2729                         out->children[0] -= 65536;
2730                 if (out->children[1] >= count)
2731                         out->children[1] -= 65536;
2732                 if (out->planenum < 0 || out->planenum >= loadmodel->brush.num_planes)
2733                         Host_Error("Corrupt clipping hull(out of range planenum)");
2734         }
2735 }
2736
2737 //Duplicate the drawing hull structure as a clipping hull
2738 static void Mod_Q1BSP_MakeHull0(void)
2739 {
2740         mnode_t         *in;
2741         mclipnode_t *out;
2742         int                     i;
2743         hull_t          *hull;
2744
2745         hull = &loadmodel->brushq1.hulls[0];
2746
2747         in = loadmodel->brush.data_nodes;
2748         out = (mclipnode_t *)Mem_Alloc(loadmodel->mempool, loadmodel->brush.num_nodes * sizeof(*out));
2749
2750         hull->clipnodes = out;
2751         hull->firstclipnode = 0;
2752         hull->lastclipnode = loadmodel->brush.num_nodes - 1;
2753         hull->planes = loadmodel->brush.data_planes;
2754
2755         for (i = 0;i < loadmodel->brush.num_nodes;i++, out++, in++)
2756         {
2757                 out->planenum = in->plane - loadmodel->brush.data_planes;
2758                 out->children[0] = in->children[0]->plane ? in->children[0] - loadmodel->brush.data_nodes : ((mleaf_t *)in->children[0])->contents;
2759                 out->children[1] = in->children[1]->plane ? in->children[1] - loadmodel->brush.data_nodes : ((mleaf_t *)in->children[1])->contents;
2760         }
2761 }
2762
2763 static void Mod_Q1BSP_LoadLeaffaces(lump_t *l)
2764 {
2765         int i, j;
2766         short *in;
2767
2768         in = (short *)(mod_base + l->fileofs);
2769         if (l->filelen % sizeof(*in))
2770                 Host_Error("Mod_Q1BSP_LoadLeaffaces: funny lump size in %s",loadmodel->name);
2771         loadmodel->brush.num_leafsurfaces = l->filelen / sizeof(*in);
2772         loadmodel->brush.data_leafsurfaces = (int *)Mem_Alloc(loadmodel->mempool, loadmodel->brush.num_leafsurfaces * sizeof(int));
2773
2774         for (i = 0;i < loadmodel->brush.num_leafsurfaces;i++)
2775         {
2776                 j = (unsigned short) LittleShort(in[i]);
2777                 if (j >= loadmodel->num_surfaces)
2778                         Host_Error("Mod_Q1BSP_LoadLeaffaces: bad surface number");
2779                 loadmodel->brush.data_leafsurfaces[i] = j;
2780         }
2781 }
2782
2783 static void Mod_Q1BSP_LoadSurfedges(lump_t *l)
2784 {
2785         int             i;
2786         int             *in;
2787
2788         in = (int *)(mod_base + l->fileofs);
2789         if (l->filelen % sizeof(*in))
2790                 Host_Error("Mod_Q1BSP_LoadSurfedges: funny lump size in %s",loadmodel->name);
2791         loadmodel->brushq1.numsurfedges = l->filelen / sizeof(*in);
2792         loadmodel->brushq1.surfedges = (int *)Mem_Alloc(loadmodel->mempool, loadmodel->brushq1.numsurfedges * sizeof(int));
2793
2794         for (i = 0;i < loadmodel->brushq1.numsurfedges;i++)
2795                 loadmodel->brushq1.surfedges[i] = LittleLong(in[i]);
2796 }
2797
2798
2799 static void Mod_Q1BSP_LoadPlanes(lump_t *l)
2800 {
2801         int                     i;
2802         mplane_t        *out;
2803         dplane_t        *in;
2804
2805         in = (dplane_t *)(mod_base + l->fileofs);
2806         if (l->filelen % sizeof(*in))
2807                 Host_Error("Mod_Q1BSP_LoadPlanes: funny lump size in %s", loadmodel->name);
2808
2809         loadmodel->brush.num_planes = l->filelen / sizeof(*in);
2810         loadmodel->brush.data_planes = out = (mplane_t *)Mem_Alloc(loadmodel->mempool, loadmodel->brush.num_planes * sizeof(*out));
2811
2812         for (i = 0;i < loadmodel->brush.num_planes;i++, in++, out++)
2813         {
2814                 out->normal[0] = LittleFloat(in->normal[0]);
2815                 out->normal[1] = LittleFloat(in->normal[1]);
2816                 out->normal[2] = LittleFloat(in->normal[2]);
2817                 out->dist = LittleFloat(in->dist);
2818
2819                 PlaneClassify(out);
2820         }
2821 }
2822
2823 static void Mod_Q1BSP_LoadMapBrushes(void)
2824 {
2825 #if 0
2826 // unfinished
2827         int submodel, numbrushes;
2828         qboolean firstbrush;
2829         char *text, *maptext;
2830         char mapfilename[MAX_QPATH];
2831         FS_StripExtension (loadmodel->name, mapfilename, sizeof (mapfilename));
2832         strlcat (mapfilename, ".map", sizeof (mapfilename));
2833         maptext = (unsigned char*) FS_LoadFile(mapfilename, tempmempool, false, NULL);
2834         if (!maptext)
2835                 return;
2836         text = maptext;
2837         if (!COM_ParseToken_Simple(&data, false, false))
2838                 return; // error
2839         submodel = 0;
2840         for (;;)
2841         {
2842                 if (!COM_ParseToken_Simple(&data, false, false))
2843                         break;
2844                 if (com_token[0] != '{')
2845                         return; // error
2846                 // entity
2847                 firstbrush = true;
2848                 numbrushes = 0;
2849                 maxbrushes = 256;
2850                 brushes = Mem_Alloc(loadmodel->mempool, maxbrushes * sizeof(mbrush_t));
2851                 for (;;)
2852                 {
2853                         if (!COM_ParseToken_Simple(&data, false, false))
2854                                 return; // error
2855                         if (com_token[0] == '}')
2856                                 break; // end of entity
2857                         if (com_token[0] == '{')
2858                         {
2859                                 // brush
2860                                 if (firstbrush)
2861                                 {
2862                                         if (submodel)
2863                                         {
2864                                                 if (submodel > loadmodel->brush.numsubmodels)
2865                                                 {
2866                                                         Con_Printf("Mod_Q1BSP_LoadMapBrushes: .map has more submodels than .bsp!\n");
2867                                                         model = NULL;
2868                                                 }
2869                                                 else
2870                                                         model = loadmodel->brush.submodels[submodel];
2871                                         }
2872                                         else
2873                                                 model = loadmodel;
2874                                 }
2875                                 for (;;)
2876                                 {
2877                                         if (!COM_ParseToken_Simple(&data, false, false))
2878                                                 return; // error
2879                                         if (com_token[0] == '}')
2880                                                 break; // end of brush
2881                                         // each brush face should be this format:
2882                                         // ( x y z ) ( x y z ) ( x y z ) texture scroll_s scroll_t rotateangle scale_s scale_t
2883                                         // FIXME: support hl .map format
2884                                         for (pointnum = 0;pointnum < 3;pointnum++)
2885                                         {
2886                                                 COM_ParseToken_Simple(&data, false, false);
2887                                                 for (componentnum = 0;componentnum < 3;componentnum++)
2888                                                 {
2889                                                         COM_ParseToken_Simple(&data, false, false);
2890                                                         point[pointnum][componentnum] = atof(com_token);
2891                                                 }
2892                                                 COM_ParseToken_Simple(&data, false, false);
2893                                         }
2894                                         COM_ParseToken_Simple(&data, false, false);
2895                                         strlcpy(facetexture, com_token, sizeof(facetexture));
2896                                         COM_ParseToken_Simple(&data, false, false);
2897                                         //scroll_s = atof(com_token);
2898                                         COM_ParseToken_Simple(&data, false, false);
2899                                         //scroll_t = atof(com_token);
2900                                         COM_ParseToken_Simple(&data, false, false);
2901                                         //rotate = atof(com_token);
2902                                         COM_ParseToken_Simple(&data, false, false);
2903                                         //scale_s = atof(com_token);
2904                                         COM_ParseToken_Simple(&data, false, false);
2905                                         //scale_t = atof(com_token);
2906                                         TriangleNormal(point[0], point[1], point[2], planenormal);
2907                                         VectorNormalizeDouble(planenormal);
2908                                         planedist = DotProduct(point[0], planenormal);
2909                                         //ChooseTexturePlane(planenormal, texturevector[0], texturevector[1]);
2910                                 }
2911                                 continue;
2912                         }
2913                 }
2914         }
2915 #endif
2916 }
2917
2918
2919 #define MAX_PORTALPOINTS 64
2920
2921 typedef struct portal_s
2922 {
2923         mplane_t plane;
2924         mnode_t *nodes[2];              // [0] = front side of plane
2925         struct portal_s *next[2];
2926         int numpoints;
2927         double points[3*MAX_PORTALPOINTS];
2928         struct portal_s *chain; // all portals are linked into a list
2929 }
2930 portal_t;
2931
2932 static memexpandablearray_t portalarray;
2933
2934 static void Mod_Q1BSP_RecursiveRecalcNodeBBox(mnode_t *node)
2935 {
2936         // process only nodes (leafs already had their box calculated)
2937         if (!node->plane)
2938                 return;
2939
2940         // calculate children first
2941         Mod_Q1BSP_RecursiveRecalcNodeBBox(node->children[0]);
2942         Mod_Q1BSP_RecursiveRecalcNodeBBox(node->children[1]);
2943
2944         // make combined bounding box from children
2945         node->mins[0] = min(node->children[0]->mins[0], node->children[1]->mins[0]);
2946         node->mins[1] = min(node->children[0]->mins[1], node->children[1]->mins[1]);
2947         node->mins[2] = min(node->children[0]->mins[2], node->children[1]->mins[2]);
2948         node->maxs[0] = max(node->children[0]->maxs[0], node->children[1]->maxs[0]);
2949         node->maxs[1] = max(node->children[0]->maxs[1], node->children[1]->maxs[1]);
2950         node->maxs[2] = max(node->children[0]->maxs[2], node->children[1]->maxs[2]);
2951 }
2952
2953 static void Mod_Q1BSP_FinalizePortals(void)
2954 {
2955         int i, j, numportals, numpoints, portalindex, portalrange = Mem_ExpandableArray_IndexRange(&portalarray);
2956         portal_t *p;
2957         mportal_t *portal;
2958         mvertex_t *point;
2959         mleaf_t *leaf, *endleaf;
2960
2961         // tally up portal and point counts and recalculate bounding boxes for all
2962         // leafs (because qbsp is very sloppy)
2963         leaf = loadmodel->brush.data_leafs;
2964         endleaf = leaf + loadmodel->brush.num_leafs;
2965         for (;leaf < endleaf;leaf++)
2966         {
2967                 VectorSet(leaf->mins,  2000000000,  2000000000,  2000000000);
2968                 VectorSet(leaf->maxs, -2000000000, -2000000000, -2000000000);
2969         }
2970         numportals = 0;
2971         numpoints = 0;
2972         for (portalindex = 0;portalindex < portalrange;portalindex++)
2973         {
2974                 p = (portal_t*)Mem_ExpandableArray_RecordAtIndex(&portalarray, portalindex);
2975                 if (!p)
2976                         continue;
2977                 // note: this check must match the one below or it will usually corrupt memory
2978                 // the nodes[0] != nodes[1] check is because leaf 0 is the shared solid leaf, it can have many portals inside with leaf 0 on both sides
2979                 if (p->numpoints >= 3 && p->nodes[0] != p->nodes[1] && ((mleaf_t *)p->nodes[0])->clusterindex >= 0 && ((mleaf_t *)p->nodes[1])->clusterindex >= 0)
2980                 {
2981                         numportals += 2;
2982                         numpoints += p->numpoints * 2;
2983                 }
2984         }
2985         loadmodel->brush.data_portals = (mportal_t *)Mem_Alloc(loadmodel->mempool, numportals * sizeof(mportal_t) + numpoints * sizeof(mvertex_t));
2986         loadmodel->brush.num_portals = numportals;
2987         loadmodel->brush.data_portalpoints = (mvertex_t *)((unsigned char *) loadmodel->brush.data_portals + numportals * sizeof(mportal_t));
2988         loadmodel->brush.num_portalpoints = numpoints;
2989         // clear all leaf portal chains
2990         for (i = 0;i < loadmodel->brush.num_leafs;i++)
2991                 loadmodel->brush.data_leafs[i].portals = NULL;
2992         // process all portals in the global portal chain, while freeing them
2993         portal = loadmodel->brush.data_portals;
2994         point = loadmodel->brush.data_portalpoints;
2995         for (portalindex = 0;portalindex < portalrange;portalindex++)
2996         {
2997                 p = (portal_t*)Mem_ExpandableArray_RecordAtIndex(&portalarray, portalindex);
2998                 if (!p)
2999                         continue;
3000                 if (p->numpoints >= 3 && p->nodes[0] != p->nodes[1])
3001                 {
3002                         // note: this check must match the one above or it will usually corrupt memory
3003                         // the nodes[0] != nodes[1] check is because leaf 0 is the shared solid leaf, it can have many portals inside with leaf 0 on both sides
3004                         if (((mleaf_t *)p->nodes[0])->clusterindex >= 0 && ((mleaf_t *)p->nodes[1])->clusterindex >= 0)
3005                         {
3006                                 // first make the back to front portal(forward portal)
3007                                 portal->points = point;
3008                                 portal->numpoints = p->numpoints;
3009                                 portal->plane.dist = p->plane.dist;
3010                                 VectorCopy(p->plane.normal, portal->plane.normal);
3011                                 portal->here = (mleaf_t *)p->nodes[1];
3012                                 portal->past = (mleaf_t *)p->nodes[0];
3013                                 // copy points
3014                                 for (j = 0;j < portal->numpoints;j++)
3015                                 {
3016                                         VectorCopy(p->points + j*3, point->position);
3017                                         point++;
3018                                 }
3019                                 BoxFromPoints(portal->mins, portal->maxs, portal->numpoints, portal->points->position);
3020                                 PlaneClassify(&portal->plane);
3021
3022                                 // link into leaf's portal chain
3023                                 portal->next = portal->here->portals;
3024                                 portal->here->portals = portal;
3025
3026                                 // advance to next portal
3027                                 portal++;
3028
3029                                 // then make the front to back portal(backward portal)
3030                                 portal->points = point;
3031                                 portal->numpoints = p->numpoints;
3032                                 portal->plane.dist = -p->plane.dist;
3033                                 VectorNegate(p->plane.normal, portal->plane.normal);
3034                                 portal->here = (mleaf_t *)p->nodes[0];
3035                                 portal->past = (mleaf_t *)p->nodes[1];
3036                                 // copy points
3037                                 for (j = portal->numpoints - 1;j >= 0;j--)
3038                                 {
3039                                         VectorCopy(p->points + j*3, point->position);
3040                                         point++;
3041                                 }
3042                                 BoxFromPoints(portal->mins, portal->maxs, portal->numpoints, portal->points->position);
3043                                 PlaneClassify(&portal->plane);
3044
3045                                 // link into leaf's portal chain
3046                                 portal->next = portal->here->portals;
3047                                 portal->here->portals = portal;
3048
3049                                 // advance to next portal
3050                                 portal++;
3051                         }
3052                         // add the portal's polygon points to the leaf bounding boxes
3053                         for (i = 0;i < 2;i++)
3054                         {
3055                                 leaf = (mleaf_t *)p->nodes[i];
3056                                 for (j = 0;j < p->numpoints;j++)
3057                                 {
3058                                         if (leaf->mins[0] > p->points[j*3+0]) leaf->mins[0] = p->points[j*3+0];
3059                                         if (leaf->mins[1] > p->points[j*3+1]) leaf->mins[1] = p->points[j*3+1];
3060                                         if (leaf->mins[2] > p->points[j*3+2]) leaf->mins[2] = p->points[j*3+2];
3061                                         if (leaf->maxs[0] < p->points[j*3+0]) leaf->maxs[0] = p->points[j*3+0];
3062                                         if (leaf->maxs[1] < p->points[j*3+1]) leaf->maxs[1] = p->points[j*3+1];
3063                                         if (leaf->maxs[2] < p->points[j*3+2]) leaf->maxs[2] = p->points[j*3+2];
3064                                 }
3065                         }
3066                 }
3067         }
3068         // now recalculate the node bounding boxes from the leafs
3069         Mod_Q1BSP_RecursiveRecalcNodeBBox(loadmodel->brush.data_nodes + loadmodel->brushq1.hulls[0].firstclipnode);
3070 }
3071
3072 /*
3073 =============
3074 AddPortalToNodes
3075 =============
3076 */
3077 static void AddPortalToNodes(portal_t *p, mnode_t *front, mnode_t *back)
3078 {
3079         if (!front)
3080                 Host_Error("AddPortalToNodes: NULL front node");
3081         if (!back)
3082                 Host_Error("AddPortalToNodes: NULL back node");
3083         if (p->nodes[0] || p->nodes[1])
3084                 Host_Error("AddPortalToNodes: already included");
3085         // note: front == back is handled gracefully, because leaf 0 is the shared solid leaf, it can often have portals with the same leaf on both sides
3086
3087         p->nodes[0] = front;
3088         p->next[0] = (portal_t *)front->portals;
3089         front->portals = (mportal_t *)p;
3090
3091         p->nodes[1] = back;
3092         p->next[1] = (portal_t *)back->portals;
3093         back->portals = (mportal_t *)p;
3094 }
3095
3096 /*
3097 =============
3098 RemovePortalFromNode
3099 =============
3100 */
3101 static void RemovePortalFromNodes(portal_t *portal)
3102 {
3103         int i;
3104         mnode_t *node;
3105         void **portalpointer;
3106         portal_t *t;
3107         for (i = 0;i < 2;i++)
3108         {
3109                 node = portal->nodes[i];
3110
3111                 portalpointer = (void **) &node->portals;
3112                 while (1)
3113                 {
3114                         t = (portal_t *)*portalpointer;
3115                         if (!t)
3116                                 Host_Error("RemovePortalFromNodes: portal not in leaf");
3117
3118                         if (t == portal)
3119                         {
3120                                 if (portal->nodes[0] == node)
3121                                 {
3122                                         *portalpointer = portal->next[0];
3123                                         portal->nodes[0] = NULL;
3124                                 }
3125                                 else if (portal->nodes[1] == node)
3126                                 {
3127                                         *portalpointer = portal->next[1];
3128                                         portal->nodes[1] = NULL;
3129                                 }
3130                                 else
3131                                         Host_Error("RemovePortalFromNodes: portal not bounding leaf");
3132                                 break;
3133                         }
3134
3135                         if (t->nodes[0] == node)
3136                                 portalpointer = (void **) &t->next[0];
3137                         else if (t->nodes[1] == node)
3138                                 portalpointer = (void **) &t->next[1];
3139                         else
3140                                 Host_Error("RemovePortalFromNodes: portal not bounding leaf");
3141                 }
3142         }
3143 }
3144
3145 #define PORTAL_DIST_EPSILON (1.0 / 32.0)
3146 static double *portalpointsbuffer;
3147 static int portalpointsbufferoffset;
3148 static int portalpointsbuffersize;
3149 static void Mod_Q1BSP_RecursiveNodePortals(mnode_t *node)
3150 {
3151         int i, side;
3152         mnode_t *front, *back, *other_node;
3153         mplane_t clipplane, *plane;
3154         portal_t *portal, *nextportal, *nodeportal, *splitportal, *temp;
3155         int numfrontpoints, numbackpoints;
3156         double *frontpoints, *backpoints;
3157
3158         // if a leaf, we're done
3159         if (!node->plane)
3160                 return;
3161
3162         // get some space for our clipping operations to use
3163         if (portalpointsbuffersize < portalpointsbufferoffset + 6*MAX_PORTALPOINTS)
3164         {
3165                 portalpointsbuffersize = portalpointsbufferoffset * 2;
3166                 portalpointsbuffer = Mem_Realloc(loadmodel->mempool, portalpointsbuffer, portalpointsbuffersize * sizeof(*portalpointsbuffer));
3167         }
3168         frontpoints = portalpointsbuffer + portalpointsbufferoffset;
3169         portalpointsbufferoffset += 3*MAX_PORTALPOINTS;
3170         backpoints = portalpointsbuffer + portalpointsbufferoffset;
3171         portalpointsbufferoffset += 3*MAX_PORTALPOINTS;
3172
3173         plane = node->plane;
3174
3175         front = node->children[0];
3176         back = node->children[1];
3177         if (front == back)
3178                 Host_Error("Mod_Q1BSP_RecursiveNodePortals: corrupt node hierarchy");
3179
3180         // create the new portal by generating a polygon for the node plane,
3181         // and clipping it by all of the other portals(which came from nodes above this one)
3182         nodeportal = (portal_t *)Mem_ExpandableArray_AllocRecord(&portalarray);
3183         nodeportal->plane = *plane;
3184
3185         // TODO: calculate node bounding boxes during recursion and calculate a maximum plane size accordingly to improve precision (as most maps do not need 1 billion unit plane polygons)
3186         PolygonD_QuadForPlane(nodeportal->points, nodeportal->plane.normal[0], nodeportal->plane.normal[1], nodeportal->plane.normal[2], nodeportal->plane.dist, 1024.0*1024.0*1024.0);
3187         nodeportal->numpoints = 4;
3188         side = 0;       // shut up compiler warning
3189         for (portal = (portal_t *)node->portals;portal;portal = portal->next[side])
3190         {
3191                 clipplane = portal->plane;
3192                 if (portal->nodes[0] == portal->nodes[1])
3193                         Host_Error("Mod_Q1BSP_RecursiveNodePortals: portal has same node on both sides(1)");
3194                 if (portal->nodes[0] == node)
3195                         side = 0;
3196                 else if (portal->nodes[1] == node)
3197                 {
3198                         clipplane.dist = -clipplane.dist;
3199                         VectorNegate(clipplane.normal, clipplane.normal);
3200                         side = 1;
3201                 }
3202                 else
3203                         Host_Error("Mod_Q1BSP_RecursiveNodePortals: mislinked portal");
3204
3205                 for (i = 0;i < nodeportal->numpoints*3;i++)
3206                         frontpoints[i] = nodeportal->points[i];
3207                 PolygonD_Divide(nodeportal->numpoints, frontpoints, clipplane.normal[0], clipplane.normal[1], clipplane.normal[2], clipplane.dist, PORTAL_DIST_EPSILON, MAX_PORTALPOINTS, nodeportal->points, &nodeportal->numpoints, 0, NULL, NULL, NULL);
3208                 if (nodeportal->numpoints <= 0 || nodeportal->numpoints >= MAX_PORTALPOINTS)
3209                         break;
3210         }
3211
3212         if (nodeportal->numpoints < 3)
3213         {
3214                 Con_Print("Mod_Q1BSP_RecursiveNodePortals: WARNING: new portal was clipped away\n");
3215                 nodeportal->numpoints = 0;
3216         }
3217         else if (nodeportal->numpoints >= MAX_PORTALPOINTS)
3218         {
3219                 Con_Print("Mod_Q1BSP_RecursiveNodePortals: WARNING: new portal has too many points\n");
3220                 nodeportal->numpoints = 0;
3221         }
3222
3223         AddPortalToNodes(nodeportal, front, back);
3224
3225         // split the portals of this node along this node's plane and assign them to the children of this node
3226         // (migrating the portals downward through the tree)
3227         for (portal = (portal_t *)node->portals;portal;portal = nextportal)
3228         {
3229                 if (portal->nodes[0] == portal->nodes[1])
3230                         Host_Error("Mod_Q1BSP_RecursiveNodePortals: portal has same node on both sides(2)");
3231                 if (portal->nodes[0] == node)
3232                         side = 0;
3233                 else if (portal->nodes[1] == node)
3234                         side = 1;
3235                 else
3236                         Host_Error("Mod_Q1BSP_RecursiveNodePortals: mislinked portal");
3237                 nextportal = portal->next[side];
3238                 if (!portal->numpoints)
3239                         continue;
3240
3241                 other_node = portal->nodes[!side];
3242                 RemovePortalFromNodes(portal);
3243
3244                 // cut the portal into two portals, one on each side of the node plane
3245                 PolygonD_Divide(portal->numpoints, portal->points, plane->normal[0], plane->normal[1], plane->normal[2], plane->dist, PORTAL_DIST_EPSILON, MAX_PORTALPOINTS, frontpoints, &numfrontpoints, MAX_PORTALPOINTS, backpoints, &numbackpoints, NULL);
3246
3247                 if (!numfrontpoints)
3248                 {
3249                         if (side == 0)
3250                                 AddPortalToNodes(portal, back, other_node);
3251                         else
3252                                 AddPortalToNodes(portal, other_node, back);
3253                         continue;
3254                 }
3255                 if (!numbackpoints)
3256                 {
3257                         if (side == 0)
3258                                 AddPortalToNodes(portal, front, other_node);
3259                         else
3260                                 AddPortalToNodes(portal, other_node, front);
3261                         continue;
3262                 }
3263
3264                 // the portal is split
3265                 splitportal = (portal_t *)Mem_ExpandableArray_AllocRecord(&portalarray);
3266                 temp = splitportal->chain;
3267                 *splitportal = *portal;
3268                 splitportal->chain = temp;
3269                 for (i = 0;i < numbackpoints*3;i++)
3270                         splitportal->points[i] = backpoints[i];
3271                 splitportal->numpoints = numbackpoints;
3272                 for (i = 0;i < numfrontpoints*3;i++)
3273                         portal->points[i] = frontpoints[i];
3274                 portal->numpoints = numfrontpoints;
3275
3276                 if (side == 0)
3277                 {
3278                         AddPortalToNodes(portal, front, other_node);
3279                         AddPortalToNodes(splitportal, back, other_node);
3280                 }
3281                 else
3282                 {
3283                         AddPortalToNodes(portal, other_node, front);
3284                         AddPortalToNodes(splitportal, other_node, back);
3285                 }
3286         }
3287
3288         Mod_Q1BSP_RecursiveNodePortals(front);
3289         Mod_Q1BSP_RecursiveNodePortals(back);
3290
3291         portalpointsbufferoffset -= 6*MAX_PORTALPOINTS;
3292 }
3293
3294 static void Mod_Q1BSP_MakePortals(void)
3295 {
3296         Mem_ExpandableArray_NewArray(&portalarray, loadmodel->mempool, sizeof(portal_t), 1020*1024/sizeof(portal_t));
3297         portalpointsbufferoffset = 0;
3298         portalpointsbuffersize = 6*MAX_PORTALPOINTS*128;
3299         portalpointsbuffer = Mem_Alloc(loadmodel->mempool, portalpointsbuffersize * sizeof(*portalpointsbuffer));
3300         Mod_Q1BSP_RecursiveNodePortals(loadmodel->brush.data_nodes + loadmodel->brushq1.hulls[0].firstclipnode);
3301         Mem_Free(portalpointsbuffer);
3302         portalpointsbuffer = NULL;
3303         portalpointsbufferoffset = 0;
3304         portalpointsbuffersize = 0;
3305         Mod_Q1BSP_FinalizePortals();
3306         Mem_ExpandableArray_FreeArray(&portalarray);
3307 }
3308
3309 //Returns PVS data for a given point
3310 //(note: can return NULL)
3311 static unsigned char *Mod_Q1BSP_GetPVS(dp_model_t *model, const vec3_t p)
3312 {
3313         mnode_t *node;
3314         node = model->brush.data_nodes + model->brushq1.hulls[0].firstclipnode;
3315         while (node->plane)
3316                 node = node->children[(node->plane->type < 3 ? p[node->plane->type] : DotProduct(p,node->plane->normal)) < node->plane->dist];
3317         if (((mleaf_t *)node)->clusterindex >= 0)
3318                 return model->brush.data_pvsclusters + ((mleaf_t *)node)->clusterindex * model->brush.num_pvsclusterbytes;
3319         else
3320                 return NULL;
3321 }
3322
3323 static void Mod_Q1BSP_FatPVS_RecursiveBSPNode(dp_model_t *model, const vec3_t org, vec_t radius, unsigned char *pvsbuffer, int pvsbytes, mnode_t *node)
3324 {
3325         while (node->plane)
3326         {
3327                 float d = PlaneDiff(org, node->plane);
3328                 if (d > radius)
3329                         node = node->children[0];
3330                 else if (d < -radius)
3331                         node = node->children[1];
3332                 else
3333                 {
3334                         // go down both sides
3335                         Mod_Q1BSP_FatPVS_RecursiveBSPNode(model, org, radius, pvsbuffer, pvsbytes, node->children[0]);
3336                         node = node->children[1];
3337                 }
3338         }
3339         // if this leaf is in a cluster, accumulate the pvs bits
3340         if (((mleaf_t *)node)->clusterindex >= 0)
3341         {
3342                 int i;
3343                 unsigned char *pvs = model->brush.data_pvsclusters + ((mleaf_t *)node)->clusterindex * model->brush.num_pvsclusterbytes;
3344                 for (i = 0;i < pvsbytes;i++)
3345                         pvsbuffer[i] |= pvs[i];
3346         }
3347 }
3348
3349 //Calculates a PVS that is the inclusive or of all leafs within radius pixels
3350 //of the given point.
3351 static int Mod_Q1BSP_FatPVS(dp_model_t *model, const vec3_t org, vec_t radius, unsigned char *pvsbuffer, int pvsbufferlength, qboolean merge)
3352 {
3353         int bytes = model->brush.num_pvsclusterbytes;
3354         bytes = min(bytes, pvsbufferlength);
3355         if (r_novis.integer || !model->brush.num_pvsclusters || !Mod_Q1BSP_GetPVS(model, org))
3356         {
3357                 memset(pvsbuffer, 0xFF, bytes);
3358                 return bytes;
3359         }
3360         if (!merge)
3361                 memset(pvsbuffer, 0, bytes);
3362         Mod_Q1BSP_FatPVS_RecursiveBSPNode(model, org, radius, pvsbuffer, bytes, model->brush.data_nodes + model->brushq1.hulls[0].firstclipnode);
3363         return bytes;
3364 }
3365
3366 static void Mod_Q1BSP_RoundUpToHullSize(dp_model_t *cmodel, const vec3_t inmins, const vec3_t inmaxs, vec3_t outmins, vec3_t outmaxs)
3367 {
3368         vec3_t size;
3369         const hull_t *hull;
3370
3371         VectorSubtract(inmaxs, inmins, size);
3372         if (cmodel->brush.ishlbsp)
3373         {
3374                 if (size[0] < 3)
3375                         hull = &cmodel->brushq1.hulls[0]; // 0x0x0
3376                 else if (size[0] <= 32)
3377                 {
3378                         if (size[2] < 54) // pick the nearest of 36 or 72
3379                                 hull = &cmodel->brushq1.hulls[3]; // 32x32x36
3380                         else
3381                                 hull = &cmodel->brushq1.hulls[1]; // 32x32x72
3382                 }
3383                 else
3384                         hull = &cmodel->brushq1.hulls[2]; // 64x64x64
3385         }
3386         else
3387         {
3388                 if (size[0] < 3)
3389                         hull = &cmodel->brushq1.hulls[0]; // 0x0x0
3390                 else if (size[0] <= 32)
3391                         hull = &cmodel->brushq1.hulls[1]; // 32x32x56
3392                 else
3393                         hull = &cmodel->brushq1.hulls[2]; // 64x64x88
3394         }
3395         VectorCopy(inmins, outmins);
3396         VectorAdd(inmins, hull->clip_size, outmaxs);
3397 }
3398
3399 void Mod_Q1BSP_Load(dp_model_t *mod, void *buffer, void *bufferend)
3400 {
3401         int i, j, k;
3402         dheader_t *header;
3403         dmodel_t *bm;
3404         mempool_t *mainmempool;
3405         float dist, modelyawradius, modelradius;
3406         msurface_t *surface;
3407         int numshadowmeshtriangles;
3408         hullinfo_t hullinfo;
3409         int totalstylesurfaces, totalstyles, stylecounts[256], remapstyles[256];
3410         model_brush_lightstyleinfo_t styleinfo[256];
3411         unsigned char *datapointer;
3412
3413         mod->modeldatatypestring = "Q1BSP";
3414
3415         mod->type = mod_brushq1;
3416
3417         header = (dheader_t *)buffer;
3418
3419         i = LittleLong(header->version);
3420         if (i != BSPVERSION && i != 30)
3421                 Host_Error("Mod_Q1BSP_Load: %s has wrong version number(%i should be %i(Quake) or 30(HalfLife)", mod->name, i, BSPVERSION);
3422         mod->brush.ishlbsp = i == 30;
3423
3424 // fill in hull info
3425         VectorClear (hullinfo.hullsizes[0][0]);
3426         VectorClear (hullinfo.hullsizes[0][1]);
3427         if (mod->brush.ishlbsp)
3428         {
3429                 mod->modeldatatypestring = "HLBSP";
3430
3431                 hullinfo.filehulls = 4;
3432                 VectorSet (hullinfo.hullsizes[1][0], -16, -16, -36);
3433                 VectorSet (hullinfo.hullsizes[1][1], 16, 16, 36);
3434                 VectorSet (hullinfo.hullsizes[2][0], -32, -32, -32);
3435                 VectorSet (hullinfo.hullsizes[2][1], 32, 32, 32);
3436                 VectorSet (hullinfo.hullsizes[3][0], -16, -16, -18);
3437                 VectorSet (hullinfo.hullsizes[3][1], 16, 16, 18);
3438         }
3439         else
3440         {
3441                 hullinfo.filehulls = 4;
3442                 VectorSet (hullinfo.hullsizes[1][0], -16, -16, -24);
3443                 VectorSet (hullinfo.hullsizes[1][1], 16, 16, 32);
3444                 VectorSet (hullinfo.hullsizes[2][0], -32, -32, -24);
3445                 VectorSet (hullinfo.hullsizes[2][1], 32, 32, 64);
3446         }
3447
3448 // read lumps
3449         mod_base = (unsigned char*)buffer;
3450         for (i = 0; i < HEADER_LUMPS; i++)
3451         {
3452                 header->lumps[i].fileofs = LittleLong(header->lumps[i].fileofs);
3453                 header->lumps[i].filelen = LittleLong(header->lumps[i].filelen);
3454         }
3455
3456         mod->soundfromcenter = true;
3457         mod->TraceBox = Mod_Q1BSP_TraceBox;
3458         mod->TraceLine = Mod_Q1BSP_TraceLine;
3459         mod->TracePoint = Mod_Q1BSP_TracePoint;
3460         mod->PointSuperContents = Mod_Q1BSP_PointSuperContents;
3461         mod->brush.TraceLineOfSight = Mod_Q1BSP_TraceLineOfSight;
3462         mod->brush.SuperContentsFromNativeContents = Mod_Q1BSP_SuperContentsFromNativeContents;
3463         mod->brush.NativeContentsFromSuperContents = Mod_Q1BSP_NativeContentsFromSuperContents;
3464         mod->brush.GetPVS = Mod_Q1BSP_GetPVS;
3465         mod->brush.FatPVS = Mod_Q1BSP_FatPVS;
3466         mod->brush.BoxTouchingPVS = Mod_Q1BSP_BoxTouchingPVS;
3467         mod->brush.BoxTouchingLeafPVS = Mod_Q1BSP_BoxTouchingLeafPVS;
3468         mod->brush.BoxTouchingVisibleLeafs = Mod_Q1BSP_BoxTouchingVisibleLeafs;
3469         mod->brush.FindBoxClusters = Mod_Q1BSP_FindBoxClusters;
3470         mod->brush.LightPoint = Mod_Q1BSP_LightPoint;
3471         mod->brush.FindNonSolidLocation = Mod_Q1BSP_FindNonSolidLocation;
3472         mod->brush.AmbientSoundLevelsForPoint = Mod_Q1BSP_AmbientSoundLevelsForPoint;
3473         mod->brush.RoundUpToHullSize = Mod_Q1BSP_RoundUpToHullSize;
3474         mod->brush.PointInLeaf = Mod_Q1BSP_PointInLeaf;
3475         mod->Draw = R_Q1BSP_Draw;
3476         mod->DrawDepth = R_Q1BSP_DrawDepth;
3477         mod->DrawDebug = R_Q1BSP_DrawDebug;
3478         mod->DrawPrepass = R_Q1BSP_DrawPrepass;
3479         mod->GetLightInfo = R_Q1BSP_GetLightInfo;
3480         mod->CompileShadowMap = R_Q1BSP_CompileShadowMap;
3481         mod->DrawShadowMap = R_Q1BSP_DrawShadowMap;
3482         mod->CompileShadowVolume = R_Q1BSP_CompileShadowVolume;
3483         mod->DrawShadowVolume = R_Q1BSP_DrawShadowVolume;
3484         mod->DrawLight = R_Q1BSP_DrawLight;
3485
3486 // load into heap
3487
3488         mod->brush.qw_md4sum = 0;
3489         mod->brush.qw_md4sum2 = 0;
3490         for (i = 0;i < HEADER_LUMPS;i++)
3491         {
3492                 int temp;
3493                 if (i == LUMP_ENTITIES)
3494                         continue;
3495                 temp = Com_BlockChecksum(mod_base + header->lumps[i].fileofs, header->lumps[i].filelen);
3496                 mod->brush.qw_md4sum ^= LittleLong(temp);
3497                 if (i == LUMP_VISIBILITY || i == LUMP_LEAFS || i == LUMP_NODES)
3498                         continue;
3499                 temp = Com_BlockChecksum(mod_base + header->lumps[i].fileofs, header->lumps[i].filelen);
3500                 mod->brush.qw_md4sum2 ^= LittleLong(temp);
3501         }
3502
3503         Mod_Q1BSP_LoadEntities(&header->lumps[LUMP_ENTITIES]);
3504         Mod_Q1BSP_LoadVertexes(&header->lumps[LUMP_VERTEXES]);
3505         Mod_Q1BSP_LoadEdges(&header->lumps[LUMP_EDGES]);
3506         Mod_Q1BSP_LoadSurfedges(&header->lumps[LUMP_SURFEDGES]);
3507         Mod_Q1BSP_LoadTextures(&header->lumps[LUMP_TEXTURES]);
3508         Mod_Q1BSP_LoadLighting(&header->lumps[LUMP_LIGHTING]);
3509         Mod_Q1BSP_LoadPlanes(&header->lumps[LUMP_PLANES]);
3510         Mod_Q1BSP_LoadTexinfo(&header->lumps[LUMP_TEXINFO]);
3511         Mod_Q1BSP_LoadFaces(&header->lumps[LUMP_FACES]);
3512         Mod_Q1BSP_LoadLeaffaces(&header->lumps[LUMP_MARKSURFACES]);
3513         Mod_Q1BSP_LoadVisibility(&header->lumps[LUMP_VISIBILITY]);
3514         // load submodels before leafs because they contain the number of vis leafs
3515         Mod_Q1BSP_LoadSubmodels(&header->lumps[LUMP_MODELS], &hullinfo);
3516         Mod_Q1BSP_LoadLeafs(&header->lumps[LUMP_LEAFS]);
3517         Mod_Q1BSP_LoadNodes(&header->lumps[LUMP_NODES]);
3518         Mod_Q1BSP_LoadClipnodes(&header->lumps[LUMP_CLIPNODES], &hullinfo);
3519
3520         // check if the map supports transparent water rendering
3521         loadmodel->brush.supportwateralpha = Mod_Q1BSP_CheckWaterAlphaSupport();
3522
3523         if (mod->brushq1.data_compressedpvs)
3524                 Mem_Free(mod->brushq1.data_compressedpvs);
3525         mod->brushq1.data_compressedpvs = NULL;
3526         mod->brushq1.num_compressedpvs = 0;
3527
3528         Mod_Q1BSP_MakeHull0();
3529         Mod_Q1BSP_MakePortals();
3530
3531         mod->numframes = 2;             // regular and alternate animation
3532         mod->numskins = 1;
3533
3534         mainmempool = mod->mempool;
3535
3536         // make a single combined shadow mesh to allow optimized shadow volume creation
3537         numshadowmeshtriangles = 0;
3538         for (j = 0, surface = loadmodel->data_surfaces;j < loadmodel->num_surfaces;j++, surface++)
3539         {
3540                 surface->num_firstshadowmeshtriangle = numshadowmeshtriangles;
3541                 numshadowmeshtriangles += surface->num_triangles;
3542         }
3543         loadmodel->brush.shadowmesh = Mod_ShadowMesh_Begin(loadmodel->mempool, numshadowmeshtriangles * 3, numshadowmeshtriangles, NULL, NULL, NULL, false, false, true);
3544         for (j = 0, surface = loadmodel->data_surfaces;j < loadmodel->num_surfaces;j++, surface++)
3545                 Mod_ShadowMesh_AddMesh(loadmodel->mempool, loadmodel->brush.shadowmesh, NULL, NULL, NULL, loadmodel->surfmesh.data_vertex3f, NULL, NULL, NULL, NULL, surface->num_triangles, (loadmodel->surfmesh.data_element3i + 3 * surface->num_firsttriangle));
3546         loadmodel->brush.shadowmesh = Mod_ShadowMesh_Finish(loadmodel->mempool, loadmodel->brush.shadowmesh, false, true, false);
3547         Mod_BuildTriangleNeighbors(loadmodel->brush.shadowmesh->neighbor3i, loadmodel->brush.shadowmesh->element3i, loadmodel->brush.shadowmesh->numtriangles);
3548
3549         if (loadmodel->brush.numsubmodels)
3550                 loadmodel->brush.submodels = (dp_model_t **)Mem_Alloc(loadmodel->mempool, loadmodel->brush.numsubmodels * sizeof(dp_model_t *));
3551
3552         // LordHavoc: to clear the fog around the original quake submodel code, I
3553         // will explain:
3554         // first of all, some background info on the submodels:
3555         // model 0 is the map model (the world, named maps/e1m1.bsp for example)
3556         // model 1 and higher are submodels (doors and the like, named *1, *2, etc)
3557         // now the weird for loop itself:
3558         // the loop functions in an odd way, on each iteration it sets up the
3559         // current 'mod' model (which despite the confusing code IS the model of
3560         // the number i), at the end of the loop it duplicates the model to become
3561         // the next submodel, and loops back to set up the new submodel.
3562
3563         // LordHavoc: now the explanation of my sane way (which works identically):
3564         // set up the world model, then on each submodel copy from the world model
3565         // and set up the submodel with the respective model info.
3566         totalstylesurfaces = 0;
3567         totalstyles = 0;
3568         for (i = 0;i < mod->brush.numsubmodels;i++)
3569         {
3570                 memset(stylecounts, 0, sizeof(stylecounts));
3571                 for (k = 0;k < mod->brushq1.submodels[i].numfaces;k++)
3572                 {
3573                         surface = mod->data_surfaces + mod->brushq1.submodels[i].firstface + k;
3574                         for (j = 0;j < MAXLIGHTMAPS;j++)
3575                                 stylecounts[surface->lightmapinfo->styles[j]]++;
3576                 }
3577                 for (k = 0;k < 255;k++)
3578                 {
3579                         totalstyles++;
3580                         if (stylecounts[k])
3581                                 totalstylesurfaces += stylecounts[k];
3582                 }
3583         }
3584         datapointer = (unsigned char *)Mem_Alloc(mod->mempool, mod->num_surfaces * sizeof(int) + totalstyles * sizeof(model_brush_lightstyleinfo_t) + totalstylesurfaces * sizeof(int *));
3585         for (i = 0;i < mod->brush.numsubmodels;i++)
3586         {
3587                 // LordHavoc: this code was originally at the end of this loop, but
3588                 // has been transformed to something more readable at the start here.
3589
3590                 if (i > 0)
3591                 {
3592                         char name[10];
3593                         // duplicate the basic information
3594                         dpsnprintf(name, sizeof(name), "*%i", i);
3595                         mod = Mod_FindName(name, loadmodel->name);
3596                         // copy the base model to this one
3597                         *mod = *loadmodel;
3598                         // rename the clone back to its proper name
3599                         strlcpy(mod->name, name, sizeof(mod->name));
3600                         mod->brush.parentmodel = loadmodel;
3601                         // textures and memory belong to the main model
3602                         mod->texturepool = NULL;
3603                         mod->mempool = NULL;
3604                         mod->brush.GetPVS = NULL;
3605                         mod->brush.FatPVS = NULL;
3606                         mod->brush.BoxTouchingPVS = NULL;
3607                         mod->brush.BoxTouchingLeafPVS = NULL;
3608                         mod->brush.BoxTouchingVisibleLeafs = NULL;
3609                         mod->brush.FindBoxClusters = NULL;
3610                         mod->brush.LightPoint = NULL;
3611                         mod->brush.AmbientSoundLevelsForPoint = NULL;
3612                 }
3613
3614                 mod->brush.submodel = i;
3615
3616                 if (loadmodel->brush.submodels)
3617                         loadmodel->brush.submodels[i] = mod;
3618
3619                 bm = &mod->brushq1.submodels[i];
3620
3621                 mod->brushq1.hulls[0].firstclipnode = bm->headnode[0];
3622                 for (j=1 ; j<MAX_MAP_HULLS ; j++)
3623                 {
3624                         mod->brushq1.hulls[j].firstclipnode = bm->headnode[j];
3625                         mod->brushq1.hulls[j].lastclipnode = mod->brushq1.numclipnodes - 1;
3626                 }
3627
3628                 mod->firstmodelsurface = bm->firstface;
3629                 mod->nummodelsurfaces = bm->numfaces;
3630
3631                 // set node/leaf parents for this submodel
3632                 Mod_Q1BSP_LoadNodes_RecursiveSetParent(mod->brush.data_nodes + mod->brushq1.hulls[0].firstclipnode, NULL);
3633
3634                 // make the model surface list (used by shadowing/lighting)
3635                 mod->sortedmodelsurfaces = (int *)datapointer;datapointer += mod->nummodelsurfaces * sizeof(int);
3636                 Mod_MakeSortedSurfaces(mod);
3637
3638                 // copy the submodel bounds, then enlarge the yaw and rotated bounds according to radius
3639                 // (previously this code measured the radius of the vertices of surfaces in the submodel, but that broke submodels that contain only CLIP brushes, which do not produce surfaces)
3640                 VectorCopy(bm->mins, mod->normalmins);
3641                 VectorCopy(bm->maxs, mod->normalmaxs);
3642                 dist = max(fabs(mod->normalmins[0]), fabs(mod->normalmaxs[0]));
3643                 modelyawradius = max(fabs(mod->normalmins[1]), fabs(mod->normalmaxs[1]));
3644                 modelyawradius = dist*dist+modelyawradius*modelyawradius;
3645                 modelradius = max(fabs(mod->normalmins[2]), fabs(mod->normalmaxs[2]));
3646                 modelradius = modelyawradius + modelradius * modelradius;
3647                 modelyawradius = sqrt(modelyawradius);
3648                 modelradius = sqrt(modelradius);
3649                 mod->yawmins[0] = mod->yawmins[1] = -modelyawradius;
3650                 mod->yawmins[2] = mod->normalmins[2];
3651                 mod->yawmaxs[0] = mod->yawmaxs[1] =  modelyawradius;
3652                 mod->yawmaxs[2] = mod->normalmaxs[2];
3653                 mod->rotatedmins[0] = mod->rotatedmins[1] = mod->rotatedmins[2] = -modelradius;
3654                 mod->rotatedmaxs[0] = mod->rotatedmaxs[1] = mod->rotatedmaxs[2] =  modelradius;
3655                 mod->radius = modelradius;
3656                 mod->radius2 = modelradius * modelradius;
3657
3658                 // this gets altered below if sky or water is used
3659                 mod->DrawSky = NULL;
3660                 mod->DrawAddWaterPlanes = NULL;
3661
3662                 // scan surfaces for sky and water and flag the submodel as possessing these features or not
3663                 // build lightstyle lists for quick marking of dirty lightmaps when lightstyles flicker
3664                 if (mod->nummodelsurfaces)
3665                 {
3666                         for (j = 0, surface = &mod->data_surfaces[mod->firstmodelsurface];j < mod->nummodelsurfaces;j++, surface++)
3667                                 if (surface->texture->basematerialflags & MATERIALFLAG_SKY)
3668                                         break;
3669                         if (j < mod->nummodelsurfaces)
3670                                 mod->DrawSky = R_Q1BSP_DrawSky;
3671
3672                         for (j = 0, surface = &mod->data_surfaces[mod->firstmodelsurface];j < mod->nummodelsurfaces;j++, surface++)
3673                                 if (surface->texture->basematerialflags & (MATERIALFLAG_WATERSHADER | MATERIALFLAG_REFRACTION | MATERIALFLAG_REFLECTION))
3674                                         break;
3675                         if (j < mod->nummodelsurfaces)
3676                                 mod->DrawAddWaterPlanes = R_Q1BSP_DrawAddWaterPlanes;
3677
3678                         // build lightstyle update chains
3679                         // (used to rapidly mark lightmapupdateflags on many surfaces
3680                         // when d_lightstylevalue changes)
3681                         memset(stylecounts, 0, sizeof(stylecounts));
3682                         for (k = 0;k < mod->nummodelsurfaces;k++)
3683                         {
3684                                 surface = mod->data_surfaces + mod->firstmodelsurface + k;
3685                                 for (j = 0;j < MAXLIGHTMAPS;j++)
3686                                         stylecounts[surface->lightmapinfo->styles[j]]++;
3687                         }
3688                         mod->brushq1.num_lightstyles = 0;
3689                         for (k = 0;k < 255;k++)
3690                         {
3691                                 if (stylecounts[k])
3692                                 {
3693                                         styleinfo[mod->brushq1.num_lightstyles].style = k;
3694                                         styleinfo[mod->brushq1.num_lightstyles].value = 0;
3695                                         styleinfo[mod->brushq1.num_lightstyles].numsurfaces = 0;
3696                                         styleinfo[mod->brushq1.num_lightstyles].surfacelist = (int *)datapointer;datapointer += stylecounts[k] * sizeof(int);
3697                                         remapstyles[k] = mod->brushq1.num_lightstyles;
3698                                         mod->brushq1.num_lightstyles++;
3699                                 }
3700                         }
3701                         for (k = 0;k < mod->nummodelsurfaces;k++)
3702                         {
3703                                 surface = mod->data_surfaces + mod->firstmodelsurface + k;
3704                                 for (j = 0;j < MAXLIGHTMAPS;j++)
3705                                 {
3706                                         if (surface->lightmapinfo->styles[j] != 255)
3707                                         {
3708                                                 int r = remapstyles[surface->lightmapinfo->styles[j]];
3709                                                 styleinfo[r].surfacelist[styleinfo[r].numsurfaces++] = mod->firstmodelsurface + k;
3710                                         }
3711                                 }
3712                         }
3713                         mod->brushq1.data_lightstyleinfo = (model_brush_lightstyleinfo_t *)datapointer;datapointer += mod->brushq1.num_lightstyles * sizeof(model_brush_lightstyleinfo_t);
3714                         memcpy(mod->brushq1.data_lightstyleinfo, styleinfo, mod->brushq1.num_lightstyles * sizeof(model_brush_lightstyleinfo_t));
3715                 }
3716                 else
3717                 {
3718                         // LordHavoc: empty submodel(lacrima.bsp has such a glitch)
3719                         Con_Printf("warning: empty submodel *%i in %s\n", i+1, loadmodel->name);
3720                 }
3721                 //mod->brushq1.num_visleafs = bm->visleafs;
3722         }
3723
3724         Mod_Q1BSP_LoadMapBrushes();
3725
3726         //Mod_Q1BSP_ProcessLightList();
3727
3728         Con_DPrintf("Stats for q1bsp model \"%s\": %i faces, %i nodes, %i leafs, %i visleafs, %i visleafportals, mesh: %i vertices, %i triangles, %i surfaces\n", loadmodel->name, loadmodel->num_surfaces, loadmodel->brush.num_nodes, loadmodel->brush.num_leafs, mod->brush.num_pvsclusters, loadmodel->brush.num_portals, loadmodel->surfmesh.num_vertices, loadmodel->surfmesh.num_triangles, loadmodel->num_surfaces);
3729 }
3730
3731 static void Mod_Q2BSP_LoadEntities(lump_t *l)
3732 {
3733 }
3734
3735 static void Mod_Q2BSP_LoadPlanes(lump_t *l)
3736 {
3737 /*
3738         d_t *in;
3739         m_t *out;
3740         int i, count;
3741
3742         in = (void *)(mod_base + l->fileofs);
3743         if (l->filelen % sizeof(*in))
3744                 Host_Error("Mod_Q2BSP_LoadPlanes: funny lump size in %s",loadmodel->name);
3745         count = l->filelen / sizeof(*in);
3746         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
3747
3748         loadmodel-> = out;
3749         loadmodel->num = count;
3750
3751         for (i = 0;i < count;i++, in++, out++)
3752         {
3753         }
3754 */
3755 }
3756
3757 static void Mod_Q2BSP_LoadVertices(lump_t *l)
3758 {
3759 /*
3760         d_t *in;
3761         m_t *out;
3762         int i, count;
3763
3764         in = (void *)(mod_base + l->fileofs);
3765         if (l->filelen % sizeof(*in))
3766                 Host_Error("Mod_Q2BSP_LoadVertices: funny lump size in %s",loadmodel->name);
3767         count = l->filelen / sizeof(*in);
3768         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
3769
3770         loadmodel-> = out;
3771         loadmodel->num = count;
3772
3773         for (i = 0;i < count;i++, in++, out++)
3774         {
3775         }
3776 */
3777 }
3778
3779 static void Mod_Q2BSP_LoadVisibility(lump_t *l)
3780 {
3781 /*
3782         d_t *in;
3783         m_t *out;
3784         int i, count;
3785
3786         in = (void *)(mod_base + l->fileofs);
3787         if (l->filelen % sizeof(*in))
3788                 Host_Error("Mod_Q2BSP_LoadVisibility: funny lump size in %s",loadmodel->name);
3789         count = l->filelen / sizeof(*in);
3790         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
3791
3792         loadmodel-> = out;
3793         loadmodel->num = count;
3794
3795         for (i = 0;i < count;i++, in++, out++)
3796         {
3797         }
3798 */
3799 }
3800
3801 static void Mod_Q2BSP_LoadNodes(lump_t *l)
3802 {
3803 /*
3804         d_t *in;
3805         m_t *out;
3806         int i, count;
3807
3808         in = (void *)(mod_base + l->fileofs);
3809         if (l->filelen % sizeof(*in))
3810                 Host_Error("Mod_Q2BSP_LoadNodes: funny lump size in %s",loadmodel->name);
3811         count = l->filelen / sizeof(*in);
3812         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
3813
3814         loadmodel-> = out;
3815         loadmodel->num = count;
3816
3817         for (i = 0;i < count;i++, in++, out++)
3818         {
3819         }
3820 */
3821 }
3822
3823 static void Mod_Q2BSP_LoadTexInfo(lump_t *l)
3824 {
3825 /*
3826         d_t *in;
3827         m_t *out;
3828         int i, count;
3829
3830         in = (void *)(mod_base + l->fileofs);
3831         if (l->filelen % sizeof(*in))
3832                 Host_Error("Mod_Q2BSP_LoadTexInfo: funny lump size in %s",loadmodel->name);
3833         count = l->filelen / sizeof(*in);
3834         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
3835
3836         loadmodel-> = out;
3837         loadmodel->num = count;
3838
3839         for (i = 0;i < count;i++, in++, out++)
3840         {
3841         }
3842 */
3843 }
3844
3845 static void Mod_Q2BSP_LoadFaces(lump_t *l)
3846 {
3847 /*
3848         d_t *in;
3849         m_t *out;
3850         int i, count;
3851
3852         in = (void *)(mod_base + l->fileofs);
3853         if (l->filelen % sizeof(*in))
3854                 Host_Error("Mod_Q2BSP_LoadFaces: funny lump size in %s",loadmodel->name);
3855         count = l->filelen / sizeof(*in);
3856         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
3857
3858         loadmodel-> = out;
3859         loadmodel->num = count;
3860
3861         for (i = 0;i < count;i++, in++, out++)
3862         {
3863         }
3864 */
3865 }
3866
3867 static void Mod_Q2BSP_LoadLighting(lump_t *l)
3868 {
3869 /*
3870         d_t *in;
3871         m_t *out;
3872         int i, count;
3873
3874         in = (void *)(mod_base + l->fileofs);
3875         if (l->filelen % sizeof(*in))
3876                 Host_Error("Mod_Q2BSP_LoadLighting: funny lump size in %s",loadmodel->name);
3877         count = l->filelen / sizeof(*in);
3878         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
3879
3880         loadmodel-> = out;
3881         loadmodel->num = count;
3882
3883         for (i = 0;i < count;i++, in++, out++)
3884         {
3885         }
3886 */
3887 }
3888
3889 static void Mod_Q2BSP_LoadLeafs(lump_t *l)
3890 {
3891 /*
3892         d_t *in;
3893         m_t *out;
3894         int i, count;
3895
3896         in = (void *)(mod_base + l->fileofs);
3897         if (l->filelen % sizeof(*in))
3898                 Host_Error("Mod_Q2BSP_LoadLeafs: funny lump size in %s",loadmodel->name);
3899         count = l->filelen / sizeof(*in);
3900         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
3901
3902         loadmodel-> = out;
3903         loadmodel->num = count;
3904
3905         for (i = 0;i < count;i++, in++, out++)
3906         {
3907         }
3908 */
3909 }
3910
3911 static void Mod_Q2BSP_LoadLeafFaces(lump_t *l)
3912 {
3913 /*
3914         d_t *in;
3915         m_t *out;
3916         int i, count;
3917
3918         in = (void *)(mod_base + l->fileofs);
3919         if (l->filelen % sizeof(*in))
3920                 Host_Error("Mod_Q2BSP_LoadLeafFaces: funny lump size in %s",loadmodel->name);
3921         count = l->filelen / sizeof(*in);
3922         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
3923
3924         loadmodel-> = out;
3925         loadmodel->num = count;
3926
3927         for (i = 0;i < count;i++, in++, out++)
3928         {
3929         }
3930 */
3931 }
3932
3933 static void Mod_Q2BSP_LoadLeafBrushes(lump_t *l)
3934 {
3935 /*
3936         d_t *in;
3937         m_t *out;
3938         int i, count;
3939
3940         in = (void *)(mod_base + l->fileofs);
3941         if (l->filelen % sizeof(*in))
3942                 Host_Error("Mod_Q2BSP_LoadLeafBrushes: funny lump size in %s",loadmodel->name);
3943         count = l->filelen / sizeof(*in);
3944         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
3945
3946         loadmodel-> = out;
3947         loadmodel->num = count;
3948
3949         for (i = 0;i < count;i++, in++, out++)
3950         {
3951         }
3952 */
3953 }
3954
3955 static void Mod_Q2BSP_LoadEdges(lump_t *l)
3956 {
3957 /*
3958         d_t *in;
3959         m_t *out;
3960         int i, count;
3961
3962         in = (void *)(mod_base + l->fileofs);
3963         if (l->filelen % sizeof(*in))
3964                 Host_Error("Mod_Q2BSP_LoadEdges: funny lump size in %s",loadmodel->name);
3965         count = l->filelen / sizeof(*in);
3966         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
3967
3968         loadmodel-> = out;
3969         loadmodel->num = count;
3970
3971         for (i = 0;i < count;i++, in++, out++)
3972         {
3973         }
3974 */
3975 }
3976
3977 static void Mod_Q2BSP_LoadSurfEdges(lump_t *l)
3978 {
3979 /*
3980         d_t *in;
3981         m_t *out;
3982         int i, count;
3983
3984         in = (void *)(mod_base + l->fileofs);
3985         if (l->filelen % sizeof(*in))
3986                 Host_Error("Mod_Q2BSP_LoadSurfEdges: funny lump size in %s",loadmodel->name);
3987         count = l->filelen / sizeof(*in);
3988         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
3989
3990         loadmodel-> = out;
3991         loadmodel->num = count;
3992
3993         for (i = 0;i < count;i++, in++, out++)
3994         {
3995         }
3996 */
3997 }
3998
3999 static void Mod_Q2BSP_LoadBrushes(lump_t *l)
4000 {
4001 /*
4002         d_t *in;
4003         m_t *out;
4004         int i, count;
4005
4006         in = (void *)(mod_base + l->fileofs);
4007         if (l->filelen % sizeof(*in))
4008                 Host_Error("Mod_Q2BSP_LoadBrushes: funny lump size in %s",loadmodel->name);
4009         count = l->filelen / sizeof(*in);
4010         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
4011
4012         loadmodel-> = out;
4013         loadmodel->num = count;
4014
4015         for (i = 0;i < count;i++, in++, out++)
4016         {
4017         }
4018 */
4019 }
4020
4021 static void Mod_Q2BSP_LoadBrushSides(lump_t *l)
4022 {
4023 /*
4024         d_t *in;
4025         m_t *out;
4026         int i, count;
4027
4028         in = (void *)(mod_base + l->fileofs);
4029         if (l->filelen % sizeof(*in))
4030                 Host_Error("Mod_Q2BSP_LoadBrushSides: funny lump size in %s",loadmodel->name);
4031         count = l->filelen / sizeof(*in);
4032         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
4033
4034         loadmodel-> = out;
4035         loadmodel->num = count;
4036
4037         for (i = 0;i < count;i++, in++, out++)
4038         {
4039         }
4040 */
4041 }
4042
4043 static void Mod_Q2BSP_LoadAreas(lump_t *l)
4044 {
4045 /*
4046         d_t *in;
4047         m_t *out;
4048         int i, count;
4049
4050         in = (void *)(mod_base + l->fileofs);
4051         if (l->filelen % sizeof(*in))
4052                 Host_Error("Mod_Q2BSP_LoadAreas: funny lump size in %s",loadmodel->name);
4053         count = l->filelen / sizeof(*in);
4054         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
4055
4056         loadmodel-> = out;
4057         loadmodel->num = count;
4058
4059         for (i = 0;i < count;i++, in++, out++)
4060         {
4061         }
4062 */
4063 }
4064
4065 static void Mod_Q2BSP_LoadAreaPortals(lump_t *l)
4066 {
4067 /*
4068         d_t *in;
4069         m_t *out;
4070         int i, count;
4071
4072         in = (void *)(mod_base + l->fileofs);
4073         if (l->filelen % sizeof(*in))
4074                 Host_Error("Mod_Q2BSP_LoadAreaPortals: funny lump size in %s",loadmodel->name);
4075         count = l->filelen / sizeof(*in);
4076         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
4077
4078         loadmodel-> = out;
4079         loadmodel->num = count;
4080
4081         for (i = 0;i < count;i++, in++, out++)
4082         {
4083         }
4084 */
4085 }
4086
4087 static void Mod_Q2BSP_LoadModels(lump_t *l)
4088 {
4089 /*
4090         d_t *in;
4091         m_t *out;
4092         int i, count;
4093
4094         in = (void *)(mod_base + l->fileofs);
4095         if (l->filelen % sizeof(*in))
4096                 Host_Error("Mod_Q2BSP_LoadModels: funny lump size in %s",loadmodel->name);
4097         count = l->filelen / sizeof(*in);
4098         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
4099
4100         loadmodel-> = out;
4101         loadmodel->num = count;
4102
4103         for (i = 0;i < count;i++, in++, out++)
4104         {
4105         }
4106 */
4107 }
4108
4109 void static Mod_Q2BSP_Load(dp_model_t *mod, void *buffer, void *bufferend)
4110 {
4111         int i;
4112         q2dheader_t *header;
4113
4114         Host_Error("Mod_Q2BSP_Load: not yet implemented");
4115
4116         mod->modeldatatypestring = "Q2BSP";
4117
4118         mod->type = mod_brushq2;
4119
4120         header = (q2dheader_t *)buffer;
4121
4122         i = LittleLong(header->version);
4123         if (i != Q2BSPVERSION)
4124                 Host_Error("Mod_Q2BSP_Load: %s has wrong version number (%i, should be %i)", mod->name, i, Q2BSPVERSION);
4125
4126         mod_base = (unsigned char *)header;
4127
4128         // swap all the lumps
4129         for (i = 0;i < (int) sizeof(*header) / 4;i++)
4130                 ((int *)header)[i] = LittleLong(((int *)header)[i]);
4131
4132         mod->brush.qw_md4sum = 0;
4133         mod->brush.qw_md4sum2 = 0;
4134         for (i = 0;i < Q2HEADER_LUMPS;i++)
4135         {
4136                 if (i == Q2LUMP_ENTITIES)
4137                         continue;
4138                 mod->brush.qw_md4sum ^= Com_BlockChecksum(mod_base + header->lumps[i].fileofs, header->lumps[i].filelen);
4139                 if (i == Q2LUMP_VISIBILITY || i == Q2LUMP_LEAFS || i == Q2LUMP_NODES)
4140                         continue;
4141                 mod->brush.qw_md4sum2 ^= Com_BlockChecksum(mod_base + header->lumps[i].fileofs, header->lumps[i].filelen);
4142         }
4143
4144         Mod_Q2BSP_LoadEntities(&header->lumps[Q2LUMP_ENTITIES]);
4145         Mod_Q2BSP_LoadPlanes(&header->lumps[Q2LUMP_PLANES]);
4146         Mod_Q2BSP_LoadVertices(&header->lumps[Q2LUMP_VERTEXES]);
4147         Mod_Q2BSP_LoadVisibility(&header->lumps[Q2LUMP_VISIBILITY]);
4148         Mod_Q2BSP_LoadNodes(&header->lumps[Q2LUMP_NODES]);
4149         Mod_Q2BSP_LoadTexInfo(&header->lumps[Q2LUMP_TEXINFO]);
4150         Mod_Q2BSP_LoadFaces(&header->lumps[Q2LUMP_FACES]);
4151         Mod_Q2BSP_LoadLighting(&header->lumps[Q2LUMP_LIGHTING]);
4152         Mod_Q2BSP_LoadLeafs(&header->lumps[Q2LUMP_LEAFS]);
4153         Mod_Q2BSP_LoadLeafFaces(&header->lumps[Q2LUMP_LEAFFACES]);
4154         Mod_Q2BSP_LoadLeafBrushes(&header->lumps[Q2LUMP_LEAFBRUSHES]);
4155         Mod_Q2BSP_LoadEdges(&header->lumps[Q2LUMP_EDGES]);
4156         Mod_Q2BSP_LoadSurfEdges(&header->lumps[Q2LUMP_SURFEDGES]);
4157         Mod_Q2BSP_LoadBrushes(&header->lumps[Q2LUMP_BRUSHES]);
4158         Mod_Q2BSP_LoadBrushSides(&header->lumps[Q2LUMP_BRUSHSIDES]);
4159         Mod_Q2BSP_LoadAreas(&header->lumps[Q2LUMP_AREAS]);
4160         Mod_Q2BSP_LoadAreaPortals(&header->lumps[Q2LUMP_AREAPORTALS]);
4161         // LordHavoc: must go last because this makes the submodels
4162         Mod_Q2BSP_LoadModels(&header->lumps[Q2LUMP_MODELS]);
4163 }
4164
4165 static int Mod_Q3BSP_SuperContentsFromNativeContents(dp_model_t *model, int nativecontents);
4166 static int Mod_Q3BSP_NativeContentsFromSuperContents(dp_model_t *model, int supercontents);
4167
4168 static void Mod_Q3BSP_LoadEntities(lump_t *l)
4169 {
4170         const char *data;
4171         char key[128], value[MAX_INPUTLINE];
4172         float v[3];
4173         loadmodel->brushq3.num_lightgrid_cellsize[0] = 64;
4174         loadmodel->brushq3.num_lightgrid_cellsize[1] = 64;
4175         loadmodel->brushq3.num_lightgrid_cellsize[2] = 128;
4176         if (!l->filelen)
4177                 return;
4178         loadmodel->brush.entities = (char *)Mem_Alloc(loadmodel->mempool, l->filelen + 1);
4179         memcpy(loadmodel->brush.entities, mod_base + l->fileofs, l->filelen);
4180         loadmodel->brush.entities[l->filelen] = 0;
4181         data = loadmodel->brush.entities;
4182         // some Q3 maps override the lightgrid_cellsize with a worldspawn key
4183         // VorteX: q3map2 FS-R generates tangentspace deluxemaps for q3bsp and sets 'deluxeMaps' key
4184         loadmodel->brushq3.deluxemapping = false;
4185         if (data && COM_ParseToken_Simple(&data, false, false) && com_token[0] == '{')
4186         {
4187                 while (1)
4188                 {
4189                         if (!COM_ParseToken_Simple(&data, false, false))
4190                                 break; // error
4191                         if (com_token[0] == '}')
4192                                 break; // end of worldspawn
4193                         if (com_token[0] == '_')
4194                                 strlcpy(key, com_token + 1, sizeof(key));
4195                         else
4196                                 strlcpy(key, com_token, sizeof(key));
4197                         while (key[strlen(key)-1] == ' ') // remove trailing spaces
4198                                 key[strlen(key)-1] = 0;
4199                         if (!COM_ParseToken_Simple(&data, false, false))
4200                                 break; // error
4201                         strlcpy(value, com_token, sizeof(value));
4202                         if (!strcasecmp("gridsize", key)) // this one is case insensitive to 100% match q3map2
4203                         {
4204 #if _MSC_VER >= 1400
4205 #define sscanf sscanf_s
4206 #endif
4207 #if 0
4208                                 if (sscanf(value, "%f %f %f", &v[0], &v[1], &v[2]) == 3 && v[0] != 0 && v[1] != 0 && v[2] != 0)
4209                                         VectorCopy(v, loadmodel->brushq3.num_lightgrid_cellsize);
4210 #else
4211                                 VectorSet(v, 64, 64, 128);
4212                                 if(sscanf(value, "%f %f %f", &v[0], &v[1], &v[2]) != 3)
4213                                         Con_Printf("Mod_Q3BSP_LoadEntities: funny gridsize \"%s\" in %s, interpreting as \"%f %f %f\" to match q3map2's parsing\n", value, loadmodel->name, v[0], v[1], v[2]);
4214                                 if (v[0] != 0 && v[1] != 0 && v[2] != 0)
4215                                         VectorCopy(v, loadmodel->brushq3.num_lightgrid_cellsize);
4216 #endif
4217                         }
4218                         else if (!strcmp("deluxeMaps", key))
4219                         {
4220                                 if (!strcmp(com_token, "1"))
4221                                 {
4222                                         loadmodel->brushq3.deluxemapping = true;
4223                                         loadmodel->brushq3.deluxemapping_modelspace = true;
4224                                 }
4225                                 else if (!strcmp(com_token, "2"))
4226                                 {
4227                                         loadmodel->brushq3.deluxemapping = true;
4228                                         loadmodel->brushq3.deluxemapping_modelspace = false;
4229                                 }
4230                         }
4231                 }
4232         }
4233 }
4234
4235 static void Mod_Q3BSP_LoadTextures(lump_t *l)
4236 {
4237         q3dtexture_t *in;
4238         texture_t *out;
4239         int i, count;
4240
4241         in = (q3dtexture_t *)(mod_base + l->fileofs);
4242         if (l->filelen % sizeof(*in))
4243                 Host_Error("Mod_Q3BSP_LoadTextures: funny lump size in %s",loadmodel->name);
4244         count = l->filelen / sizeof(*in);
4245         out = (texture_t *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
4246
4247         loadmodel->data_textures = out;
4248         loadmodel->num_textures = count;
4249         loadmodel->num_texturesperskin = loadmodel->num_textures;
4250
4251         for (i = 0;i < count;i++)
4252         {
4253                 strlcpy (out[i].name, in[i].name, sizeof (out[i].name));
4254                 out[i].surfaceflags = LittleLong(in[i].surfaceflags);
4255                 out[i].supercontents = Mod_Q3BSP_SuperContentsFromNativeContents(loadmodel, LittleLong(in[i].contents));
4256         }
4257
4258         if (cls.state == ca_dedicated)
4259                 return;
4260
4261         for (i = 0;i < count;i++, in++, out++)
4262                 Mod_LoadTextureFromQ3Shader(out, out->name, true, true, TEXF_MIPMAP | (r_picmipworld.integer ? TEXF_PICMIP : 0) | TEXF_COMPRESS);
4263 }
4264
4265 static void Mod_Q3BSP_LoadPlanes(lump_t *l)
4266 {
4267         q3dplane_t *in;
4268         mplane_t *out;
4269         int i, count;
4270
4271         in = (q3dplane_t *)(mod_base + l->fileofs);
4272         if (l->filelen % sizeof(*in))
4273                 Host_Error("Mod_Q3BSP_LoadPlanes: funny lump size in %s",loadmodel->name);
4274         count = l->filelen / sizeof(*in);
4275         out = (mplane_t *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
4276
4277         loadmodel->brush.data_planes = out;
4278         loadmodel->brush.num_planes = count;
4279
4280         for (i = 0;i < count;i++, in++, out++)
4281         {
4282                 out->normal[0] = LittleFloat(in->normal[0]);
4283                 out->normal[1] = LittleFloat(in->normal[1]);
4284                 out->normal[2] = LittleFloat(in->normal[2]);
4285                 out->dist = LittleFloat(in->dist);
4286                 PlaneClassify(out);
4287         }
4288 }
4289
4290 static void Mod_Q3BSP_LoadBrushSides(lump_t *l)
4291 {
4292         q3dbrushside_t *in;
4293         q3mbrushside_t *out;
4294         int i, n, count;
4295
4296         in = (q3dbrushside_t *)(mod_base + l->fileofs);
4297         if (l->filelen % sizeof(*in))
4298                 Host_Error("Mod_Q3BSP_LoadBrushSides: funny lump size in %s",loadmodel->name);
4299         count = l->filelen / sizeof(*in);
4300         out = (q3mbrushside_t *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
4301
4302         loadmodel->brush.data_brushsides = out;
4303         loadmodel->brush.num_brushsides = count;
4304
4305         for (i = 0;i < count;i++, in++, out++)
4306         {
4307                 n = LittleLong(in->planeindex);
4308                 if (n < 0 || n >= loadmodel->brush.num_planes)
4309                         Host_Error("Mod_Q3BSP_LoadBrushSides: invalid planeindex %i (%i planes)", n, loadmodel->brush.num_planes);
4310                 out->plane = loadmodel->brush.data_planes + n;
4311                 n = LittleLong(in->textureindex);
4312                 if (n < 0 || n >= loadmodel->num_textures)
4313                         Host_Error("Mod_Q3BSP_LoadBrushSides: invalid textureindex %i (%i textures)", n, loadmodel->num_textures);
4314                 out->texture = loadmodel->data_textures + n;
4315         }
4316 }
4317
4318 static void Mod_Q3BSP_LoadBrushSides_IG(lump_t *l)
4319 {
4320         q3dbrushside_ig_t *in;
4321         q3mbrushside_t *out;
4322         int i, n, count;
4323
4324         in = (q3dbrushside_ig_t *)(mod_base + l->fileofs);
4325         if (l->filelen % sizeof(*in))
4326                 Host_Error("Mod_Q3BSP_LoadBrushSides: funny lump size in %s",loadmodel->name);
4327         count = l->filelen / sizeof(*in);
4328         out = (q3mbrushside_t *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
4329
4330         loadmodel->brush.data_brushsides = out;
4331         loadmodel->brush.num_brushsides = count;
4332
4333         for (i = 0;i < count;i++, in++, out++)
4334         {
4335                 n = LittleLong(in->planeindex);
4336                 if (n < 0 || n >= loadmodel->brush.num_planes)
4337                         Host_Error("Mod_Q3BSP_LoadBrushSides: invalid planeindex %i (%i planes)", n, loadmodel->brush.num_planes);
4338                 out->plane = loadmodel->brush.data_planes + n;
4339                 n = LittleLong(in->textureindex);
4340                 if (n < 0 || n >= loadmodel->num_textures)
4341                         Host_Error("Mod_Q3BSP_LoadBrushSides: invalid textureindex %i (%i textures)", n, loadmodel->num_textures);
4342                 out->texture = loadmodel->data_textures + n;
4343         }
4344 }
4345
4346 static void Mod_Q3BSP_LoadBrushes(lump_t *l)
4347 {
4348         q3dbrush_t *in;
4349         q3mbrush_t *out;
4350         int i, j, n, c, count, maxplanes, q3surfaceflags;
4351         colplanef_t *planes;
4352
4353         in = (q3dbrush_t *)(mod_base + l->fileofs);
4354         if (l->filelen % sizeof(*in))
4355                 Host_Error("Mod_Q3BSP_LoadBrushes: funny lump size in %s",loadmodel->name);
4356         count = l->filelen / sizeof(*in);
4357         out = (q3mbrush_t *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
4358
4359         loadmodel->brush.data_brushes = out;
4360         loadmodel->brush.num_brushes = count;
4361
4362         maxplanes = 0;
4363         planes = NULL;
4364
4365         for (i = 0;i < count;i++, in++, out++)
4366         {
4367                 n = LittleLong(in->firstbrushside);
4368                 c = LittleLong(in->numbrushsides);
4369                 if (n < 0 || n + c > loadmodel->brush.num_brushsides)
4370                         Host_Error("Mod_Q3BSP_LoadBrushes: invalid brushside range %i : %i (%i brushsides)", n, n + c, loadmodel->brush.num_brushsides);
4371                 out->firstbrushside = loadmodel->brush.data_brushsides + n;
4372                 out->numbrushsides = c;
4373                 n = LittleLong(in->textureindex);
4374                 if (n < 0 || n >= loadmodel->num_textures)
4375                         Host_Error("Mod_Q3BSP_LoadBrushes: invalid textureindex %i (%i textures)", n, loadmodel->num_textures);
4376                 out->texture = loadmodel->data_textures + n;
4377
4378                 // make a list of mplane_t structs to construct a colbrush from
4379                 if (maxplanes < out->numbrushsides)
4380                 {
4381                         maxplanes = out->numbrushsides;
4382                         if (planes)
4383                                 Mem_Free(planes);
4384                         planes = (colplanef_t *)Mem_Alloc(tempmempool, sizeof(colplanef_t) * maxplanes);
4385                 }
4386                 q3surfaceflags = 0;
4387                 for (j = 0;j < out->numbrushsides;j++)
4388                 {
4389                         VectorCopy(out->firstbrushside[j].plane->normal, planes[j].normal);
4390                         planes[j].dist = out->firstbrushside[j].plane->dist;
4391                         planes[j].q3surfaceflags = out->firstbrushside[j].texture->surfaceflags;
4392                         planes[j].texture = out->firstbrushside[j].texture;
4393                         q3surfaceflags |= planes[j].q3surfaceflags;
4394                 }
4395                 // make the colbrush from the planes
4396                 out->colbrushf = Collision_NewBrushFromPlanes(loadmodel->mempool, out->numbrushsides, planes, out->texture->supercontents, q3surfaceflags, out->texture, true);
4397
4398                 // this whole loop can take a while (e.g. on redstarrepublic4)
4399                 CL_KeepaliveMessage(false);
4400         }
4401         if (planes)
4402                 Mem_Free(planes);
4403 }
4404
4405 static void Mod_Q3BSP_LoadEffects(lump_t *l)
4406 {
4407         q3deffect_t *in;
4408         q3deffect_t *out;
4409         int i, n, count;
4410
4411         in = (q3deffect_t *)(mod_base + l->fileofs);
4412         if (l->filelen % sizeof(*in))
4413                 Host_Error("Mod_Q3BSP_LoadEffects: funny lump size in %s",loadmodel->name);
4414         count = l->filelen / sizeof(*in);
4415         out = (q3deffect_t *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
4416
4417         loadmodel->brushq3.data_effects = out;
4418         loadmodel->brushq3.num_effects = count;
4419
4420         for (i = 0;i < count;i++, in++, out++)
4421         {
4422                 strlcpy (out->shadername, in->shadername, sizeof (out->shadername));
4423                 n = LittleLong(in->brushindex);
4424                 if (n >= loadmodel->brush.num_brushes)
4425                 {
4426                         Con_Printf("Mod_Q3BSP_LoadEffects: invalid brushindex %i (%i brushes), setting to -1\n", n, loadmodel->brush.num_brushes);
4427                         n = -1;
4428                 }
4429                 out->brushindex = n;
4430                 out->unknown = LittleLong(in->unknown);
4431         }
4432 }
4433
4434 static void Mod_Q3BSP_LoadVertices(lump_t *l)
4435 {
4436         q3dvertex_t *in;
4437         int i, count;
4438
4439         in = (q3dvertex_t *)(mod_base + l->fileofs);
4440         if (l->filelen % sizeof(*in))
4441                 Host_Error("Mod_Q3BSP_LoadVertices: funny lump size in %s",loadmodel->name);
4442         loadmodel->brushq3.num_vertices = count = l->filelen / sizeof(*in);
4443         loadmodel->brushq3.data_vertex3f = (float *)Mem_Alloc(loadmodel->mempool, count * (sizeof(float) * (3 + 3 + 2 + 2 + 4)));
4444         loadmodel->brushq3.data_normal3f = loadmodel->brushq3.data_vertex3f + count * 3;
4445         loadmodel->brushq3.data_texcoordtexture2f = loadmodel->brushq3.data_normal3f + count * 3;
4446         loadmodel->brushq3.data_texcoordlightmap2f = loadmodel->brushq3.data_texcoordtexture2f + count * 2;
4447         loadmodel->brushq3.data_color4f = loadmodel->brushq3.data_texcoordlightmap2f + count * 2;
4448
4449         for (i = 0;i < count;i++, in++)
4450         {
4451                 loadmodel->brushq3.data_vertex3f[i * 3 + 0] = LittleFloat(in->origin3f[0]);
4452                 loadmodel->brushq3.data_vertex3f[i * 3 + 1] = LittleFloat(in->origin3f[1]);
4453                 loadmodel->brushq3.data_vertex3f[i * 3 + 2] = LittleFloat(in->origin3f[2]);
4454                 loadmodel->brushq3.data_normal3f[i * 3 + 0] = LittleFloat(in->normal3f[0]);
4455                 loadmodel->brushq3.data_normal3f[i * 3 + 1] = LittleFloat(in->normal3f[1]);
4456                 loadmodel->brushq3.data_normal3f[i * 3 + 2] = LittleFloat(in->normal3f[2]);
4457                 loadmodel->brushq3.data_texcoordtexture2f[i * 2 + 0] = LittleFloat(in->texcoord2f[0]);
4458                 loadmodel->brushq3.data_texcoordtexture2f[i * 2 + 1] = LittleFloat(in->texcoord2f[1]);
4459                 loadmodel->brushq3.data_texcoordlightmap2f[i * 2 + 0] = LittleFloat(in->lightmap2f[0]);
4460                 loadmodel->brushq3.data_texcoordlightmap2f[i * 2 + 1] = LittleFloat(in->lightmap2f[1]);
4461                 // svector/tvector are calculated later in face loading
4462                 loadmodel->brushq3.data_color4f[i * 4 + 0] = in->color4ub[0] * (1.0f / 255.0f);
4463                 loadmodel->brushq3.data_color4f[i * 4 + 1] = in->color4ub[1] * (1.0f / 255.0f);
4464                 loadmodel->brushq3.data_color4f[i * 4 + 2] = in->color4ub[2] * (1.0f / 255.0f);
4465                 loadmodel->brushq3.data_color4f[i * 4 + 3] = in->color4ub[3] * (1.0f / 255.0f);
4466         }
4467 }
4468
4469 static void Mod_Q3BSP_LoadTriangles(lump_t *l)
4470 {
4471         int *in;
4472         int *out;
4473         int i, count;
4474
4475         in = (int *)(mod_base + l->fileofs);
4476         if (l->filelen % sizeof(int[3]))
4477                 Host_Error("Mod_Q3BSP_LoadTriangles: funny lump size in %s",loadmodel->name);
4478         count = l->filelen / sizeof(*in);
4479         out = (int *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
4480
4481         loadmodel->brushq3.num_triangles = count / 3;
4482         loadmodel->brushq3.data_element3i = out;
4483
4484         for (i = 0;i < count;i++, in++, out++)
4485         {
4486                 *out = LittleLong(*in);
4487                 if (*out < 0 || *out >= loadmodel->brushq3.num_vertices)
4488                 {
4489                         Con_Printf("Mod_Q3BSP_LoadTriangles: invalid vertexindex %i (%i vertices), setting to 0\n", *out, loadmodel->brushq3.num_vertices);
4490                         if(!loadmodel->brushq3.num_vertices)
4491                                 Host_Error("Mod_Q1BSP_LoadTrianglles: %s has triangles but no vertexes, cannot fix\n", loadmodel->name);
4492                         *out = 0;
4493                 }
4494         }
4495 }
4496
4497 static void Mod_Q3BSP_LoadLightmaps(lump_t *l, lump_t *faceslump)
4498 {
4499         q3dlightmap_t *input_pointer;
4500         int i, j, k, count, power, power2, mask, endlightmap, mergewidth, mergeheight;
4501         unsigned char *c;
4502
4503         unsigned char *convertedpixels;
4504         char mapname[MAX_QPATH];
4505         int size, bytesperpixel, rgbmap[3];
4506         qboolean external;
4507         unsigned char *inpixels[10000]; // max count q3map2 can output (it uses 4 digits)
4508
4509         // defaults for q3bsp
4510         size = 128;
4511         bytesperpixel = 3;
4512         rgbmap[0] = 2;
4513         rgbmap[1] = 1;
4514         rgbmap[2] = 0;
4515         external = false;
4516         loadmodel->brushq3.lightmapsize = 128;
4517
4518         if (cls.state == ca_dedicated)
4519                 return;
4520
4521         if(mod_q3bsp_nolightmaps.integer)
4522         {
4523                 return;
4524         }
4525         else if(l->filelen)
4526         {
4527                 // prefer internal LMs for compatibility (a BSP contains no info on whether external LMs exist)
4528                 if (developer_loading.integer)
4529                         Con_Printf("Using internal lightmaps\n");
4530                 input_pointer = (q3dlightmap_t *)(mod_base + l->fileofs);
4531                 if (l->filelen % sizeof(*input_pointer))
4532                         Host_Error("Mod_Q3BSP_LoadLightmaps: funny lump size in %s",loadmodel->name);
4533                 count = l->filelen / sizeof(*input_pointer);
4534                 for(i = 0; i < count; ++i)
4535                         inpixels[i] = input_pointer[i].rgb;
4536         }
4537         else
4538         {
4539                 // no internal lightmaps
4540                 // try external lightmaps
4541                 if (developer_loading.integer)
4542                         Con_Printf("Using external lightmaps\n");
4543                 FS_StripExtension(loadmodel->name, mapname, sizeof(mapname));
4544                 inpixels[0] = loadimagepixelsbgra(va("%s/lm_%04d", mapname, 0), false, false);
4545                 if(!inpixels[0])
4546                         return;
4547
4548                 // using EXTERNAL lightmaps instead
4549                 if(image_width != (int) CeilPowerOf2(image_width) || image_width != image_height)
4550                 {
4551                         Mem_Free(inpixels[0]);
4552                         Host_Error("Mod_Q3BSP_LoadLightmaps: invalid external lightmap size in %s",loadmodel->name);
4553                 }
4554
4555                 size = image_width;
4556                 bytesperpixel = 4;
4557                 rgbmap[0] = 0;
4558                 rgbmap[1] = 1;
4559                 rgbmap[2] = 2;
4560                 external = true;
4561
4562                 for(count = 1; ; ++count)
4563                 {
4564                         inpixels[count] = loadimagepixelsbgra(va("%s/lm_%04d", mapname, count), false, false);
4565                         if(!inpixels[count])
4566                                 break; // we got all of them
4567                         if(image_width != size || image_height != size)
4568                         {
4569                                 for(i = 0; i <= count; ++i)
4570                                         Mem_Free(inpixels[i]);
4571                                 Host_Error("Mod_Q3BSP_LoadLightmaps: invalid external lightmap size in %s",loadmodel->name);
4572                         }
4573                 }
4574         }
4575
4576         convertedpixels = (unsigned char *) Mem_Alloc(tempmempool, size*size*4);
4577         loadmodel->brushq3.lightmapsize = size;
4578         loadmodel->brushq3.num_originallightmaps = count;
4579
4580         // now check the surfaces to see if any of them index an odd numbered
4581         // lightmap, if so this is not a deluxemapped bsp file
4582         //
4583         // also check what lightmaps are actually used, because q3map2 sometimes
4584         // (always?) makes an unused one at the end, which
4585         // q3map2 sometimes (or always?) makes a second blank lightmap for no
4586         // reason when only one lightmap is used, which can throw off the
4587         // deluxemapping detection method, so check 2-lightmap bsp's specifically
4588         // to see if the second lightmap is blank, if so it is not deluxemapped.
4589         // VorteX: autodetect only if previous attempt to find "deluxeMaps" key
4590         // in Mod_Q3BSP_LoadEntities was failed
4591         if (!loadmodel->brushq3.deluxemapping)
4592         {
4593                 loadmodel->brushq3.deluxemapping = !(count & 1);
4594                 loadmodel->brushq3.deluxemapping_modelspace = true;
4595                 endlightmap = 0;
4596                 if (loadmodel->brushq3.deluxemapping)
4597                 {
4598                         int facecount = faceslump->filelen / sizeof(q3dface_t);
4599                         q3dface_t *faces = (q3dface_t *)(mod_base + faceslump->fileofs);
4600                         for (i = 0;i < facecount;i++)
4601                         {
4602                                 j = LittleLong(faces[i].lightmapindex);
4603                                 if (j >= 0)
4604                                 {
4605                                         endlightmap = max(endlightmap, j + 1);
4606                                         if ((j & 1) || j + 1 >= count)
4607                                         {
4608                                                 loadmodel->brushq3.deluxemapping = false;
4609                                                 break;
4610                                         }
4611                                 }
4612                         }
4613                 }
4614
4615                 // q3map2 sometimes (or always?) makes a second blank lightmap for no
4616                 // reason when only one lightmap is used, which can throw off the
4617                 // deluxemapping detection method, so check 2-lightmap bsp's specifically
4618                 // to see if the second lightmap is blank, if so it is not deluxemapped.
4619                 //
4620                 // further research has shown q3map2 sometimes creates a deluxemap and two
4621                 // blank lightmaps, which must be handled properly as well
4622                 if (endlightmap == 1 && count > 1)
4623                 {
4624                         c = inpixels[1];
4625                         for (i = 0;i < size*size;i++)
4626                         {
4627                                 if (c[bytesperpixel*i + rgbmap[0]])
4628                                         break;
4629                                 if (c[bytesperpixel*i + rgbmap[1]])
4630                                         break;
4631                                 if (c[bytesperpixel*i + rgbmap[2]])
4632                                         break;
4633                         }
4634                         if (i == size*size)
4635                         {
4636                                 // all pixels in the unused lightmap were black...
4637                                 loadmodel->brushq3.deluxemapping = false;
4638                         }
4639                 }
4640         }
4641
4642         Con_DPrintf("%s is %sdeluxemapped\n", loadmodel->name, loadmodel->brushq3.deluxemapping ? "" : "not ");
4643
4644         // figure out what the most reasonable merge power is within limits
4645
4646         loadmodel->brushq3.num_lightmapmergepower = 0;
4647
4648         for(i = 0; (128 << i) < size; ++i)
4649                 ;
4650         // i is now 0 for 128, 1 for 256, etc
4651
4652         for (power = 1;power + i <= mod_q3bsp_lightmapmergepower.integer && (size << power) <= (int)vid.maxtexturesize_2d && (1 << (power * 2)) < 4 * (count >> (loadmodel->brushq3.deluxemapping ? 1 : 0)); power++)
4653                 loadmodel->brushq3.num_lightmapmergepower = power;
4654
4655         loadmodel->brushq3.num_lightmapmerge = 1 << loadmodel->brushq3.num_lightmapmergepower;
4656
4657         loadmodel->brushq3.num_mergedlightmaps = ((count >> (loadmodel->brushq3.deluxemapping ? 1 : 0)) + (1 << (loadmodel->brushq3.num_lightmapmergepower * 2)) - 1) >> (loadmodel->brushq3.num_lightmapmergepower * 2);
4658         loadmodel->brushq3.data_lightmaps = (rtexture_t **)Mem_Alloc(loadmodel->mempool, loadmodel->brushq3.num_mergedlightmaps * sizeof(rtexture_t *));
4659         if (loadmodel->brushq3.deluxemapping)
4660                 loadmodel->brushq3.data_deluxemaps = (rtexture_t **)Mem_Alloc(loadmodel->mempool, loadmodel->brushq3.num_mergedlightmaps * sizeof(rtexture_t *));
4661
4662         // allocate a texture pool if we need it
4663         if (loadmodel->texturepool == NULL && cls.state != ca_dedicated)
4664                 loadmodel->texturepool = R_AllocTexturePool();
4665
4666         power = loadmodel->brushq3.num_lightmapmergepower;
4667         power2 = power * 2;
4668         mask = (1 << power) - 1;
4669         for (i = 0;i < count;i++)
4670         {
4671                 // figure out which merged lightmap texture this fits into
4672                 int lightmapindex = i >> (loadmodel->brushq3.deluxemapping + power2);
4673                 for (k = 0;k < size*size;k++)
4674                 {
4675                         convertedpixels[k*4+0] = inpixels[i][k*bytesperpixel+rgbmap[0]];
4676                         convertedpixels[k*4+1] = inpixels[i][k*bytesperpixel+rgbmap[1]];
4677                         convertedpixels[k*4+2] = inpixels[i][k*bytesperpixel+rgbmap[2]];
4678                         convertedpixels[k*4+3] = 255;
4679                 }
4680                 if (loadmodel->brushq3.num_lightmapmergepower > 0)
4681                 {
4682                         // if the lightmap has not been allocated yet, create it
4683                         if (!loadmodel->brushq3.data_lightmaps[lightmapindex])
4684                         {
4685                                 // create a lightmap only as large as necessary to hold the
4686                                 // remaining size*size blocks
4687                                 // if there are multiple merged lightmap textures then they will
4688                                 // all be full size except the last one which may be smaller
4689                                 // because it only needs to the remaining blocks, and it will often
4690                                 // be odd sizes like 2048x512 due to only being 25% full or so.
4691                                 j = (count >> (loadmodel->brushq3.deluxemapping ? 1 : 0)) - (lightmapindex << power2);
4692                                 for (mergewidth = 1;mergewidth < j && mergewidth < (1 << power);mergewidth *= 2)
4693                                         ;
4694                                 for (mergeheight = 1;mergewidth*mergeheight < j && mergeheight < (1 << power);mergeheight *= 2)
4695                                         ;
4696                                 if (developer_loading.integer)
4697                                         Con_Printf("lightmap merge texture #%i is %ix%i (%i of %i used)\n", lightmapindex, mergewidth*size, mergeheight*size, min(j, mergewidth*mergeheight), mergewidth*mergeheight);
4698                                 loadmodel->brushq3.data_lightmaps[lightmapindex] = R_LoadTexture2D(loadmodel->texturepool, va("lightmap%04i", lightmapindex), mergewidth * size, mergeheight * size, NULL, TEXTYPE_BGRA, TEXF_FORCELINEAR | (gl_texturecompression_q3bsplightmaps.integer ? TEXF_COMPRESS : TEXF_ALLOWUPDATES | TEXF_MANUALFLUSHUPDATES), NULL);
4699                                 if (loadmodel->brushq3.data_deluxemaps)
4700                                         loadmodel->brushq3.data_deluxemaps[lightmapindex] = R_LoadTexture2D(loadmodel->texturepool, va("deluxemap%04i", lightmapindex), mergewidth * size, mergeheight * size, NULL, TEXTYPE_BGRA, TEXF_FORCELINEAR | (gl_texturecompression_q3bspdeluxemaps.integer ? TEXF_COMPRESS : TEXF_ALLOWUPDATES | TEXF_MANUALFLUSHUPDATES), NULL);
4701                         }
4702                         mergewidth = R_TextureWidth(loadmodel->brushq3.data_lightmaps[lightmapindex]) / size;
4703                         mergeheight = R_TextureHeight(loadmodel->brushq3.data_lightmaps[lightmapindex]) / size;
4704                         j = (i >> (loadmodel->brushq3.deluxemapping ? 1 : 0)) & ((1 << power2) - 1);
4705                         if (loadmodel->brushq3.deluxemapping && (i & 1))
4706                                 R_UpdateTexture(loadmodel->brushq3.data_deluxemaps[lightmapindex], convertedpixels, (j % mergewidth) * size, (j / mergewidth) * size, size, size);
4707                         else
4708                                 R_UpdateTexture(loadmodel->brushq3.data_lightmaps [lightmapindex], convertedpixels, (j % mergewidth) * size, (j / mergewidth) * size, size, size);
4709                 }
4710                 else
4711                 {
4712                         // figure out which merged lightmap texture this fits into
4713                         if (loadmodel->brushq3.deluxemapping && (i & 1))
4714                                 loadmodel->brushq3.data_deluxemaps[lightmapindex] = R_LoadTexture2D(loadmodel->texturepool, va("deluxemap%04i", lightmapindex), size, size, convertedpixels, TEXTYPE_BGRA, TEXF_FORCELINEAR | (gl_texturecompression_q3bspdeluxemaps.integer ? TEXF_COMPRESS : 0), NULL);
4715                         else
4716                                 loadmodel->brushq3.data_lightmaps [lightmapindex] = R_LoadTexture2D(loadmodel->texturepool, va("lightmap%04i", lightmapindex), size, size, convertedpixels, TEXTYPE_BGRA, TEXF_FORCELINEAR | (gl_texturecompression_q3bsplightmaps.integer ? TEXF_COMPRESS : 0), NULL);
4717                 }
4718         }
4719
4720         for (i = 0;i < loadmodel->brushq3.num_mergedlightmaps;i++)
4721         {
4722                 if (loadmodel->brushq3.data_deluxemaps && loadmodel->brushq3.data_deluxemaps[i])
4723                         R_FlushTexture(loadmodel->brushq3.data_deluxemaps[i]);
4724                 if (loadmodel->brushq3.data_lightmaps[i])
4725                         R_FlushTexture(loadmodel->brushq3.data_lightmaps[i]);
4726         }
4727
4728         Mem_Free(convertedpixels);
4729         if(external)
4730         {
4731                 for(i = 0; i < count; ++i)
4732                         Mem_Free(inpixels[i]);
4733         }
4734 }
4735
4736 static void Mod_Q3BSP_BuildBBoxes(const int *element3i, int num_triangles, const float *vertex3f, float **collisionbbox6f, int *collisionstride, int stride)
4737 {
4738         int j, k, cnt, tri;
4739         float *mins, *maxs;
4740         const float *vert;
4741         *collisionstride = stride;
4742         if(stride > 0)
4743         {
4744                 cnt = (num_triangles + stride - 1) / stride;
4745                 *collisionbbox6f = (float *) Mem_Alloc(loadmodel->mempool, sizeof(float[6]) * cnt);
4746                 for(j = 0; j < cnt; ++j)
4747                 {
4748                         mins = &((*collisionbbox6f)[6 * j + 0]);
4749                         maxs = &((*collisionbbox6f)[6 * j + 3]);
4750                         for(k = 0; k < stride; ++k)
4751                         {
4752                                 tri = j * stride + k;
4753                                 if(tri >= num_triangles)
4754                                         break;
4755                                 vert = &(vertex3f[element3i[3 * tri + 0] * 3]);
4756                                 if(!k || vert[0] < mins[0]) mins[0] = vert[0];
4757                                 if(!k || vert[1] < mins[1]) mins[1] = vert[1];
4758                                 if(!k || vert[2] < mins[2]) mins[2] = vert[2];
4759                                 if(!k || vert[0] > maxs[0]) maxs[0] = vert[0];
4760                                 if(!k || vert[1] > maxs[1]) maxs[1] = vert[1];
4761                                 if(!k || vert[2] > maxs[2]) maxs[2] = vert[2];
4762                                 vert = &(vertex3f[element3i[3 * tri + 1] * 3]);
4763                                 if(vert[0] < mins[0]) mins[0] = vert[0];
4764                                 if(vert[1] < mins[1]) mins[1] = vert[1];
4765                                 if(vert[2] < mins[2]) mins[2] = vert[2];
4766                                 if(vert[0] > maxs[0]) maxs[0] = vert[0];
4767                                 if(vert[1] > maxs[1]) maxs[1] = vert[1];
4768                                 if(vert[2] > maxs[2]) maxs[2] = vert[2];
4769                                 vert = &(vertex3f[element3i[3 * tri + 2] * 3]);
4770                                 if(vert[0] < mins[0]) mins[0] = vert[0];
4771                                 if(vert[1] < mins[1]) mins[1] = vert[1];
4772                                 if(vert[2] < mins[2]) mins[2] = vert[2];
4773                                 if(vert[0] > maxs[0]) maxs[0] = vert[0];
4774                                 if(vert[1] > maxs[1]) maxs[1] = vert[1];
4775                                 if(vert[2] > maxs[2]) maxs[2] = vert[2];
4776                         }
4777                 }
4778         }
4779         else
4780                 *collisionbbox6f = NULL;
4781 }
4782
4783 typedef struct patchtess_s
4784 {
4785         patchinfo_t info;
4786
4787         // Auxiliary data used only by patch loading code in Mod_Q3BSP_LoadFaces
4788         int surface_id;
4789         float lodgroup[6];
4790         float *originalvertex3f;
4791 } patchtess_t;
4792
4793 #define PATCHTESS_SAME_LODGROUP(a,b) \
4794         ( \
4795                 (a).lodgroup[0] == (b).lodgroup[0] && \
4796                 (a).lodgroup[1] == (b).lodgroup[1] && \
4797                 (a).lodgroup[2] == (b).lodgroup[2] && \
4798                 (a).lodgroup[3] == (b).lodgroup[3] && \
4799                 (a).lodgroup[4] == (b).lodgroup[4] && \
4800                 (a).lodgroup[5] == (b).lodgroup[5] \
4801         )
4802
4803 static void Mod_Q3BSP_LoadFaces(lump_t *l)
4804 {
4805         q3dface_t *in, *oldin;
4806         msurface_t *out, *oldout;
4807         int i, oldi, j, n, count, invalidelements, patchsize[2], finalwidth, finalheight, xtess, ytess, finalvertices, finaltriangles, firstvertex, firstelement, type, oldnumtriangles, oldnumtriangles2, meshvertices, meshtriangles, numvertices, numtriangles, cxtess, cytess;
4808         float lightmaptcbase[2], lightmaptcscale[2];
4809         //int *originalelement3i;
4810         //int *originalneighbor3i;
4811         float *originalvertex3f;
4812         //float *originalsvector3f;
4813         //float *originaltvector3f;
4814         float *originalnormal3f;
4815         float *originalcolor4f;
4816         float *originaltexcoordtexture2f;
4817         float *originaltexcoordlightmap2f;
4818         float *v;
4819         patchtess_t *patchtess = NULL;
4820         int patchtesscount = 0;
4821         qboolean again;
4822
4823         in = (q3dface_t *)(mod_base + l->fileofs);
4824         if (l->filelen % sizeof(*in))
4825                 Host_Error("Mod_Q3BSP_LoadFaces: funny lump size in %s",loadmodel->name);
4826         count = l->filelen / sizeof(*in);
4827         out = (msurface_t *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
4828
4829         loadmodel->data_surfaces = out;
4830         loadmodel->num_surfaces = count;
4831
4832         if(count > 0)
4833                 patchtess = (patchtess_t*) Mem_Alloc(tempmempool, count * sizeof(*patchtess));
4834
4835         i = 0;
4836         oldi = i;
4837         oldin = in;
4838         oldout = out;
4839         meshvertices = 0;
4840         meshtriangles = 0;
4841         for (;i < count;i++, in++, out++)
4842         {
4843                 // check face type first
4844                 type = LittleLong(in->type);
4845                 if (type != Q3FACETYPE_FLAT
4846                  && type != Q3FACETYPE_PATCH
4847                  && type != Q3FACETYPE_MESH
4848                  && type != Q3FACETYPE_FLARE)
4849                 {
4850                         Con_DPrintf("Mod_Q3BSP_LoadFaces: face #%i: unknown face type %i\n", i, type);
4851                         continue;
4852                 }
4853
4854                 n = LittleLong(in->textureindex);
4855                 if (n < 0 || n >= loadmodel->num_textures)
4856                 {
4857                         Con_DPrintf("Mod_Q3BSP_LoadFaces: face #%i: invalid textureindex %i (%i textures)\n", i, n, loadmodel->num_textures);
4858                         continue;
4859                 }
4860                 out->texture = loadmodel->data_textures + n;
4861                 n = LittleLong(in->effectindex);
4862                 if (n < -1 || n >= loadmodel->brushq3.num_effects)
4863                 {
4864                         if (developer_extra.integer)
4865                                 Con_DPrintf("Mod_Q3BSP_LoadFaces: face #%i (texture \"%s\"): invalid effectindex %i (%i effects)\n", i, out->texture->name, n, loadmodel->brushq3.num_effects);
4866                         n = -1;
4867                 }
4868                 if (n == -1)
4869                         out->effect = NULL;
4870                 else
4871                         out->effect = loadmodel->brushq3.data_effects + n;
4872
4873                 if (cls.state != ca_dedicated)
4874                 {
4875                         out->lightmaptexture = NULL;
4876                         out->deluxemaptexture = r_texture_blanknormalmap;
4877                         n = LittleLong(in->lightmapindex);
4878                         if (n < 0)
4879                                 n = -1;
4880                         else if (n >= loadmodel->brushq3.num_originallightmaps)
4881                         {
4882                                 if(loadmodel->brushq3.num_originallightmaps != 0)
4883                                         Con_Printf("Mod_Q3BSP_LoadFaces: face #%i (texture \"%s\"): invalid lightmapindex %i (%i lightmaps)\n", i, out->texture->name, n, loadmodel->brushq3.num_originallightmaps);
4884                                 n = -1;
4885                         }
4886                         else
4887                         {
4888                                 out->lightmaptexture = loadmodel->brushq3.data_lightmaps[n >> (loadmodel->brushq3.num_lightmapmergepower * 2 + loadmodel->brushq3.deluxemapping)];
4889                                 if (loadmodel->brushq3.deluxemapping)
4890                                         out->deluxemaptexture = loadmodel->brushq3.data_deluxemaps[n >> (loadmodel->brushq3.num_lightmapmergepower * 2 + loadmodel->brushq3.deluxemapping)];
4891                         }
4892                 }
4893
4894                 firstvertex = LittleLong(in->firstvertex);
4895                 numvertices = LittleLong(in->numvertices);
4896                 firstelement = LittleLong(in->firstelement);
4897                 numtriangles = LittleLong(in->numelements) / 3;
4898                 if (numtriangles * 3 != LittleLong(in->numelements))
4899                 {
4900                         Con_Printf("Mod_Q3BSP_LoadFaces: face #%i (texture \"%s\"): numelements %i is not a multiple of 3\n", i, out->texture->name, LittleLong(in->numelements));
4901                         continue;
4902                 }
4903                 if (firstvertex < 0 || firstvertex + numvertices > loadmodel->brushq3.num_vertices)
4904                 {
4905                         Con_Printf("Mod_Q3BSP_LoadFaces: face #%i (texture \"%s\"): invalid vertex range %i : %i (%i vertices)\n", i, out->texture->name, firstvertex, firstvertex + numvertices, loadmodel->brushq3.num_vertices);
4906                         continue;
4907                 }
4908                 if (firstelement < 0 || firstelement + numtriangles * 3 > loadmodel->brushq3.num_triangles * 3)
4909                 {
4910                         Con_Printf("Mod_Q3BSP_LoadFaces: face #%i (texture \"%s\"): invalid element range %i : %i (%i elements)\n", i, out->texture->name, firstelement, firstelement + numtriangles * 3, loadmodel->brushq3.num_triangles * 3);
4911                         continue;
4912                 }
4913                 switch(type)
4914                 {
4915                 case Q3FACETYPE_FLAT:
4916                 case Q3FACETYPE_MESH:
4917                         // no processing necessary
4918                         break;
4919                 case Q3FACETYPE_PATCH:
4920                         patchsize[0] = LittleLong(in->specific.patch.patchsize[0]);
4921                         patchsize[1] = LittleLong(in->specific.patch.patchsize[1]);
4922                         if (numvertices != (patchsize[0] * patchsize[1]) || patchsize[0] < 3 || patchsize[1] < 3 || !(patchsize[0] & 1) || !(patchsize[1] & 1) || patchsize[0] * patchsize[1] >= min(r_subdivisions_maxvertices.integer, r_subdivisions_collision_maxvertices.integer))
4923                         {
4924                                 Con_Printf("Mod_Q3BSP_LoadFaces: face #%i (texture \"%s\"): invalid patchsize %ix%i\n", i, out->texture->name, patchsize[0], patchsize[1]);
4925                                 continue;
4926                         }
4927                         originalvertex3f = loadmodel->brushq3.data_vertex3f + firstvertex * 3;
4928
4929                         // convert patch to Q3FACETYPE_MESH
4930                         xtess = Q3PatchTesselationOnX(patchsize[0], patchsize[1], 3, originalvertex3f, r_subdivisions_tolerance.value);
4931                         ytess = Q3PatchTesselationOnY(patchsize[0], patchsize[1], 3, originalvertex3f, r_subdivisions_tolerance.value);
4932                         // bound to user settings
4933                         xtess = bound(r_subdivisions_mintess.integer, xtess, r_subdivisions_maxtess.integer);
4934                         ytess = bound(r_subdivisions_mintess.integer, ytess, r_subdivisions_maxtess.integer);
4935                         // bound to sanity settings
4936                         xtess = bound(0, xtess, 1024);
4937                         ytess = bound(0, ytess, 1024);
4938
4939                         // lower quality collision patches! Same procedure as before, but different cvars
4940                         // convert patch to Q3FACETYPE_MESH
4941                         cxtess = Q3PatchTesselationOnX(patchsize[0], patchsize[1], 3, originalvertex3f, r_subdivisions_collision_tolerance.value);
4942                         cytess = Q3PatchTesselationOnY(patchsize[0], patchsize[1], 3, originalvertex3f, r_subdivisions_collision_tolerance.value);
4943                         // bound to user settings
4944                         cxtess = bound(r_subdivisions_collision_mintess.integer, cxtess, r_subdivisions_collision_maxtess.integer);
4945                         cytess = bound(r_subdivisions_collision_mintess.integer, cytess, r_subdivisions_collision_maxtess.integer);
4946                         // bound to sanity settings
4947                         cxtess = bound(0, cxtess, 1024);
4948                         cytess = bound(0, cytess, 1024);
4949
4950                         // store it for the LOD grouping step
4951                         patchtess[patchtesscount].info.xsize = patchsize[0];
4952                         patchtess[patchtesscount].info.ysize = patchsize[1];
4953                         patchtess[patchtesscount].info.lods[PATCH_LOD_VISUAL].xtess = xtess;
4954                         patchtess[patchtesscount].info.lods[PATCH_LOD_VISUAL].ytess = ytess;
4955                         patchtess[patchtesscount].info.lods[PATCH_LOD_COLLISION].xtess = cxtess;
4956                         patchtess[patchtesscount].info.lods[PATCH_LOD_COLLISION].ytess = cytess;
4957
4958                         patchtess[patchtesscount].surface_id = i;
4959                         patchtess[patchtesscount].lodgroup[0] = LittleFloat(in->specific.patch.mins[0]);
4960                         patchtess[patchtesscount].lodgroup[1] = LittleFloat(in->specific.patch.mins[1]);
4961                         patchtess[patchtesscount].lodgroup[2] = LittleFloat(in->specific.patch.mins[2]);
4962                         patchtess[patchtesscount].lodgroup[3] = LittleFloat(in->specific.patch.maxs[0]);
4963                         patchtess[patchtesscount].lodgroup[4] = LittleFloat(in->specific.patch.maxs[1]);
4964                         patchtess[patchtesscount].lodgroup[5] = LittleFloat(in->specific.patch.maxs[2]);
4965                         patchtess[patchtesscount].originalvertex3f = originalvertex3f;
4966                         ++patchtesscount;
4967                         break;
4968                 case Q3FACETYPE_FLARE:
4969                         if (developer_extra.integer)
4970                                 Con_DPrintf("Mod_Q3BSP_LoadFaces: face #%i (texture \"%s\"): Q3FACETYPE_FLARE not supported (yet)\n", i, out->texture->name);
4971                         // don't render it
4972                         continue;
4973                 }
4974                 out->num_vertices = numvertices;
4975                 out->num_triangles = numtriangles;
4976                 meshvertices += out->num_vertices;
4977                 meshtriangles += out->num_triangles;
4978         }
4979
4980         // Fix patches tesselations so that they make no seams
4981         do
4982         {
4983                 again = false;
4984                 for(i = 0; i < patchtesscount; ++i)
4985                 {
4986                         for(j = i+1; j < patchtesscount; ++j)
4987                         {
4988                                 if (!PATCHTESS_SAME_LODGROUP(patchtess[i], patchtess[j]))
4989                                         continue;
4990
4991                                 if (Q3PatchAdjustTesselation(3, &patchtess[i].info, patchtess[i].originalvertex3f, &patchtess[j].info, patchtess[j].originalvertex3f) )
4992                                         again = true;
4993                         }
4994                 }
4995         }
4996         while (again);
4997
4998         // Calculate resulting number of triangles
4999         for(i = 0; i < patchtesscount; ++i)
5000         {
5001                 finalwidth = Q3PatchDimForTess(patchtess[i].info.xsize, patchtess[i].info.lods[PATCH_LOD_VISUAL].xtess);
5002                 finalheight = Q3PatchDimForTess(patchtess[i].info.ysize,patchtess[i].info.lods[PATCH_LOD_VISUAL].ytess);
5003                 numvertices = finalwidth * finalheight;
5004                 numtriangles = (finalwidth - 1) * (finalheight - 1) * 2;
5005
5006                 oldout[patchtess[i].surface_id].num_vertices = numvertices;
5007                 oldout[patchtess[i].surface_id].num_triangles = numtriangles;
5008                 meshvertices += oldout[patchtess[i].surface_id].num_vertices;
5009                 meshtriangles += oldout[patchtess[i].surface_id].num_triangles;
5010         }
5011
5012         i = oldi;
5013         in = oldin;
5014         out = oldout;
5015         Mod_AllocSurfMesh(loadmodel->mempool, meshvertices, meshtriangles, false, true, false);
5016         meshvertices = 0;
5017         meshtriangles = 0;
5018         for (;i < count && meshvertices + out->num_vertices <= loadmodel->surfmesh.num_vertices;i++, in++, out++)
5019         {
5020                 if (out->num_vertices < 3 || out->num_triangles < 1)
5021                         continue;
5022
5023                 type = LittleLong(in->type);
5024                 firstvertex = LittleLong(in->firstvertex);
5025                 firstelement = LittleLong(in->firstelement);
5026                 out->num_firstvertex = meshvertices;
5027                 out->num_firsttriangle = meshtriangles;
5028                 switch(type)
5029                 {
5030                 case Q3FACETYPE_FLAT:
5031                 case Q3FACETYPE_MESH:
5032                         // no processing necessary, except for lightmap merging
5033                         for (j = 0;j < out->num_vertices;j++)
5034                         {
5035                                 (loadmodel->surfmesh.data_vertex3f + 3 * out->num_firstvertex)[j * 3 + 0] = loadmodel->brushq3.data_vertex3f[(firstvertex + j) * 3 + 0];
5036                                 (loadmodel->surfmesh.data_vertex3f + 3 * out->num_firstvertex)[j * 3 + 1] = loadmodel->brushq3.data_vertex3f[(firstvertex + j) * 3 + 1];
5037                                 (loadmodel->surfmesh.data_vertex3f + 3 * out->num_firstvertex)[j * 3 + 2] = loadmodel->brushq3.data_vertex3f[(firstvertex + j) * 3 + 2];
5038                                 (loadmodel->surfmesh.data_normal3f + 3 * out->num_firstvertex)[j * 3 + 0] = loadmodel->brushq3.data_normal3f[(firstvertex + j) * 3 + 0];
5039                                 (loadmodel->surfmesh.data_normal3f + 3 * out->num_firstvertex)[j * 3 + 1] = loadmodel->brushq3.data_normal3f[(firstvertex + j) * 3 + 1];
5040                                 (loadmodel->surfmesh.data_normal3f + 3 * out->num_firstvertex)[j * 3 + 2] = loadmodel->brushq3.data_normal3f[(firstvertex + j) * 3 + 2];
5041                                 (loadmodel->surfmesh.data_texcoordtexture2f + 2 * out->num_firstvertex)[j * 2 + 0] = loadmodel->brushq3.data_texcoordtexture2f[(firstvertex + j) * 2 + 0];
5042                                 (loadmodel->surfmesh.data_texcoordtexture2f + 2 * out->num_firstvertex)[j * 2 + 1] = loadmodel->brushq3.data_texcoordtexture2f[(firstvertex + j) * 2 + 1];
5043                                 (loadmodel->surfmesh.data_texcoordlightmap2f + 2 * out->num_firstvertex)[j * 2 + 0] = loadmodel->brushq3.data_texcoordlightmap2f[(firstvertex + j) * 2 + 0];
5044                                 (loadmodel->surfmesh.data_texcoordlightmap2f + 2 * out->num_firstvertex)[j * 2 + 1] = loadmodel->brushq3.data_texcoordlightmap2f[(firstvertex + j) * 2 + 1];
5045                                 (loadmodel->surfmesh.data_lightmapcolor4f + 4 * out->num_firstvertex)[j * 4 + 0] = loadmodel->brushq3.data_color4f[(firstvertex + j) * 4 + 0];
5046                                 (loadmodel->surfmesh.data_lightmapcolor4f + 4 * out->num_firstvertex)[j * 4 + 1] = loadmodel->brushq3.data_color4f[(firstvertex + j) * 4 + 1];
5047                                 (loadmodel->surfmesh.data_lightmapcolor4f + 4 * out->num_firstvertex)[j * 4 + 2] = loadmodel->brushq3.data_color4f[(firstvertex + j) * 4 + 2];
5048                                 (loadmodel->surfmesh.data_lightmapcolor4f + 4 * out->num_firstvertex)[j * 4 + 3] = loadmodel->brushq3.data_color4f[(firstvertex + j) * 4 + 3];
5049                         }
5050                         for (j = 0;j < out->num_triangles*3;j++)
5051                                 (loadmodel->surfmesh.data_element3i + 3 * out->num_firsttriangle)[j] = loadmodel->brushq3.data_element3i[firstelement + j] + out->num_firstvertex;
5052                         break;
5053                 case Q3FACETYPE_PATCH:
5054                         patchsize[0] = LittleLong(in->specific.patch.patchsize[0]);
5055                         patchsize[1] = LittleLong(in->specific.patch.patchsize[1]);
5056                         originalvertex3f = loadmodel->brushq3.data_vertex3f + firstvertex * 3;
5057                         originalnormal3f = loadmodel->brushq3.data_normal3f + firstvertex * 3;
5058                         originaltexcoordtexture2f = loadmodel->brushq3.data_texcoordtexture2f + firstvertex * 2;
5059                         originaltexcoordlightmap2f = loadmodel->brushq3.data_texcoordlightmap2f + firstvertex * 2;
5060                         originalcolor4f = loadmodel->brushq3.data_color4f + firstvertex * 4;
5061
5062                         xtess = ytess = cxtess = cytess = -1;
5063                         for(j = 0; j < patchtesscount; ++j)
5064                                 if(patchtess[j].surface_id == i)
5065                                 {
5066                                         xtess = patchtess[j].info.lods[PATCH_LOD_VISUAL].xtess;
5067                                         ytess = patchtess[j].info.lods[PATCH_LOD_VISUAL].ytess;
5068                                         cxtess = patchtess[j].info.lods[PATCH_LOD_COLLISION].xtess;
5069                                         cytess = patchtess[j].info.lods[PATCH_LOD_COLLISION].ytess;
5070                                         break;
5071                                 }
5072                         if(xtess == -1)
5073                         {
5074                                 Con_Printf("ERROR: patch %d isn't preprocessed?!?\n", i);
5075                                 xtess = ytess = cxtess = cytess = 0;
5076                         }
5077
5078                         finalwidth = Q3PatchDimForTess(patchsize[0],xtess); //((patchsize[0] - 1) * xtess) + 1;
5079                         finalheight = Q3PatchDimForTess(patchsize[1],ytess); //((patchsize[1] - 1) * ytess) + 1;
5080                         finalvertices = finalwidth * finalheight;
5081                         finaltriangles = (finalwidth - 1) * (finalheight - 1) * 2;
5082                         type = Q3FACETYPE_MESH;
5083                         // generate geometry
5084                         // (note: normals are skipped because they get recalculated)
5085                         Q3PatchTesselateFloat(3, sizeof(float[3]), (loadmodel->surfmesh.data_vertex3f + 3 * out->num_firstvertex), patchsize[0], patchsize[1], sizeof(float[3]), originalvertex3f, xtess, ytess);
5086                         Q3PatchTesselateFloat(3, sizeof(float[3]), (loadmodel->surfmesh.data_normal3f + 3 * out->num_firstvertex), patchsize[0], patchsize[1], sizeof(float[3]), originalnormal3f, xtess, ytess);
5087                         Q3PatchTesselateFloat(2, sizeof(float[2]), (loadmodel->surfmesh.data_texcoordtexture2f + 2 * out->num_firstvertex), patchsize[0], patchsize[1], sizeof(float[2]), originaltexcoordtexture2f, xtess, ytess);
5088                         Q3PatchTesselateFloat(2, sizeof(float[2]), (loadmodel->surfmesh.data_texcoordlightmap2f + 2 * out->num_firstvertex), patchsize[0], patchsize[1], sizeof(float[2]), originaltexcoordlightmap2f, xtess, ytess);
5089                         Q3PatchTesselateFloat(4, sizeof(float[4]), (loadmodel->surfmesh.data_lightmapcolor4f + 4 * out->num_firstvertex), patchsize[0], patchsize[1], sizeof(float[4]), originalcolor4f, xtess, ytess);
5090                         Q3PatchTriangleElements((loadmodel->surfmesh.data_element3i + 3 * out->num_firsttriangle), finalwidth, finalheight, out->num_firstvertex);
5091
5092                         out->num_triangles = Mod_RemoveDegenerateTriangles(out->num_triangles, (loadmodel->surfmesh.data_element3i + 3 * out->num_firsttriangle), (loadmodel->surfmesh.data_element3i + 3 * out->num_firsttriangle), loadmodel->surfmesh.data_vertex3f);
5093
5094                         if (developer_extra.integer)
5095                         {
5096                                 if (out->num_triangles < finaltriangles)
5097                                         Con_DPrintf("Mod_Q3BSP_LoadFaces: %ix%i curve subdivided to %i vertices / %i triangles, %i degenerate triangles removed (leaving %i)\n", patchsize[0], patchsize[1], out->num_vertices, finaltriangles, finaltriangles - out->num_triangles, out->num_triangles);
5098                                 else
5099                                         Con_DPrintf("Mod_Q3BSP_LoadFaces: %ix%i curve subdivided to %i vertices / %i triangles\n", patchsize[0], patchsize[1], out->num_vertices, out->num_triangles);
5100                         }
5101                         // q3map does not put in collision brushes for curves... ugh
5102                         // build the lower quality collision geometry
5103                         finalwidth = Q3PatchDimForTess(patchsize[0],cxtess); //((patchsize[0] - 1) * cxtess) + 1;
5104                         finalheight = Q3PatchDimForTess(patchsize[1],cytess); //((patchsize[1] - 1) * cytess) + 1;
5105                         finalvertices = finalwidth * finalheight;
5106                         finaltriangles = (finalwidth - 1) * (finalheight - 1) * 2;
5107
5108                         out->data_collisionvertex3f = (float *)Mem_Alloc(loadmodel->mempool, sizeof(float[3]) * finalvertices);
5109                         out->data_collisionelement3i = (int *)Mem_Alloc(loadmodel->mempool, sizeof(int[3]) * finaltriangles);
5110                         out->num_collisionvertices = finalvertices;
5111                         out->num_collisiontriangles = finaltriangles;
5112                         Q3PatchTesselateFloat(3, sizeof(float[3]), out->data_collisionvertex3f, patchsize[0], patchsize[1], sizeof(float[3]), originalvertex3f, cxtess, cytess);
5113                         Q3PatchTriangleElements(out->data_collisionelement3i, finalwidth, finalheight, 0);
5114
5115                         //Mod_SnapVertices(3, out->num_vertices, (loadmodel->surfmesh.data_vertex3f + 3 * out->num_firstvertex), 0.25);
5116                         Mod_SnapVertices(3, out->num_collisionvertices, out->data_collisionvertex3f, 1);
5117
5118                         oldnumtriangles = out->num_triangles;
5119                         oldnumtriangles2 = out->num_collisiontriangles;
5120                         out->num_collisiontriangles = Mod_RemoveDegenerateTriangles(out->num_collisiontriangles, out->data_collisionelement3i, out->data_collisionelement3i, out->data_collisionvertex3f);
5121
5122                         // now optimize the collision mesh by finding triangle bboxes...
5123                         Mod_Q3BSP_BuildBBoxes(out->data_collisionelement3i, out->num_collisiontriangles, out->data_collisionvertex3f, &out->data_collisionbbox6f, &out->num_collisionbboxstride, mod_q3bsp_curves_collisions_stride.integer);
5124                         Mod_Q3BSP_BuildBBoxes(loadmodel->surfmesh.data_element3i + 3 * out->num_firsttriangle, out->num_triangles, loadmodel->surfmesh.data_vertex3f, &out->data_bbox6f, &out->num_bboxstride, mod_q3bsp_curves_stride.integer);
5125
5126                         if (developer_extra.integer)
5127                                 Con_DPrintf("Mod_Q3BSP_LoadFaces: %ix%i curve became %i:%i vertices / %i:%i triangles (%i:%i degenerate)\n", patchsize[0], patchsize[1], out->num_vertices, out->num_collisionvertices, oldnumtriangles, oldnumtriangles2, oldnumtriangles - out->num_triangles, oldnumtriangles2 - out->num_collisiontriangles);
5128                         break;
5129                 default:
5130                         break;
5131                 }
5132                 meshvertices += out->num_vertices;
5133                 meshtriangles += out->num_triangles;
5134                 for (j = 0, invalidelements = 0;j < out->num_triangles * 3;j++)
5135                         if ((loadmodel->surfmesh.data_element3i + 3 * out->num_firsttriangle)[j] < out->num_firstvertex || (loadmodel->surfmesh.data_element3i + 3 * out->num_firsttriangle)[j] >= out->num_firstvertex + out->num_vertices)
5136                                 invalidelements++;
5137                 if (invalidelements)
5138                 {
5139                         Con_Printf("Mod_Q3BSP_LoadFaces: Warning: face #%i has %i invalid elements, type = %i, texture->name = \"%s\", texture->surfaceflags = %i, firstvertex = %i, numvertices = %i, firstelement = %i, numelements = %i, elements list:\n", i, invalidelements, type, out->texture->name, out->texture->surfaceflags, firstvertex, out->num_vertices, firstelement, out->num_triangles * 3);
5140                         for (j = 0;j < out->num_triangles * 3;j++)
5141                         {
5142                                 Con_Printf(" %i", (loadmodel->surfmesh.data_element3i + 3 * out->num_firsttriangle)[j] - out->num_firstvertex);
5143                                 if ((loadmodel->surfmesh.data_element3i + 3 * out->num_firsttriangle)[j] < out->num_firstvertex || (loadmodel->surfmesh.data_element3i + 3 * out->num_firsttriangle)[j] >= out->num_firstvertex + out->num_vertices)
5144                                         (loadmodel->surfmesh.data_element3i + 3 * out->num_firsttriangle)[j] = out->num_firstvertex;
5145                         }
5146                         Con_Print("\n");
5147                 }
5148                 // calculate a bounding box
5149                 VectorClear(out->mins);
5150                 VectorClear(out->maxs);
5151                 if (out->num_vertices)
5152                 {
5153                         if (cls.state != ca_dedicated && out->lightmaptexture)
5154                         {
5155                                 // figure out which part of the merged lightmap this fits into
5156                                 int lightmapindex = LittleLong(in->lightmapindex) >> (loadmodel->brushq3.deluxemapping ? 1 : 0);
5157                                 int mergewidth = R_TextureWidth(out->lightmaptexture) / loadmodel->brushq3.lightmapsize;
5158                                 int mergeheight = R_TextureHeight(out->lightmaptexture) / loadmodel->brushq3.lightmapsize;
5159                                 lightmapindex &= mergewidth * mergeheight - 1;
5160                                 lightmaptcscale[0] = 1.0f / mergewidth;
5161                                 lightmaptcscale[1] = 1.0f / mergeheight;
5162                                 lightmaptcbase[0] = (lightmapindex % mergewidth) * lightmaptcscale[0];
5163                                 lightmaptcbase[1] = (lightmapindex / mergewidth) * lightmaptcscale[1];
5164                                 // modify the lightmap texcoords to match this region of the merged lightmap
5165                                 for (j = 0, v = loadmodel->surfmesh.data_texcoordlightmap2f + 2 * out->num_firstvertex;j < out->num_vertices;j++, v += 2)
5166                                 {
5167                                         v[0] = v[0] * lightmaptcscale[0] + lightmaptcbase[0];
5168                                         v[1] = v[1] * lightmaptcscale[1] + lightmaptcbase[1];
5169                                 }
5170                         }
5171                         VectorCopy((loadmodel->surfmesh.data_vertex3f + 3 * out->num_firstvertex), out->mins);
5172                         VectorCopy((loadmodel->surfmesh.data_vertex3f + 3 * out->num_firstvertex), out->maxs);
5173                         for (j = 1, v = (loadmodel->surfmesh.data_vertex3f + 3 * out->num_firstvertex) + 3;j < out->num_vertices;j++, v += 3)
5174                         {
5175                                 out->mins[0] = min(out->mins[0], v[0]);
5176                                 out->maxs[0] = max(out->maxs[0], v[0]);
5177                                 out->mins[1] = min(out->mins[1], v[1]);
5178                                 out->maxs[1] = max(out->maxs[1], v[1]);
5179                                 out->mins[2] = min(out->mins[2], v[2]);
5180                                 out->maxs[2] = max(out->maxs[2], v[2]);
5181                         }
5182                         out->mins[0] -= 1.0f;
5183                         out->mins[1] -= 1.0f;
5184                         out->mins[2] -= 1.0f;
5185                         out->maxs[0] += 1.0f;
5186                         out->maxs[1] += 1.0f;
5187                         out->maxs[2] += 1.0f;
5188                 }
5189                 // set lightmap styles for consistency with q1bsp
5190                 //out->lightmapinfo->styles[0] = 0;
5191                 //out->lightmapinfo->styles[1] = 255;
5192                 //out->lightmapinfo->styles[2] = 255;
5193                 //out->lightmapinfo->styles[3] = 255;
5194         }
5195
5196         i = oldi;
5197         out = oldout;
5198         for (;i < count;i++, out++)
5199         {
5200                 if(out->num_vertices && out->num_triangles)
5201                         continue;
5202                 if(out->num_vertices == 0)
5203                         Con_Printf("Mod_Q3BSP_LoadFaces: surface %d has no vertices, ignoring\n", i);
5204                 if(out->num_triangles == 0)
5205                         Con_Printf("Mod_Q3BSP_LoadFaces: surface %d has no triangles, ignoring\n", i);
5206         }
5207
5208         // for per pixel lighting
5209         Mod_BuildTextureVectorsFromNormals(0, loadmodel->surfmesh.num_vertices, loadmodel->surfmesh.num_triangles, loadmodel->surfmesh.data_vertex3f, loadmodel->surfmesh.data_texcoordtexture2f, loadmodel->surfmesh.data_normal3f, loadmodel->surfmesh.data_element3i, loadmodel->surfmesh.data_svector3f, loadmodel->surfmesh.data_tvector3f, true);
5210
5211         // generate ushort elements array if possible
5212         if (loadmodel->surfmesh.data_element3s)
5213                 for (i = 0;i < loadmodel->surfmesh.num_triangles*3;i++)
5214                         loadmodel->surfmesh.data_element3s[i] = loadmodel->surfmesh.data_element3i[i];
5215
5216         // free the no longer needed vertex data
5217         loadmodel->brushq3.num_vertices = 0;
5218         if (loadmodel->brushq3.data_vertex3f)
5219                 Mem_Free(loadmodel->brushq3.data_vertex3f);
5220         loadmodel->brushq3.data_vertex3f = NULL;
5221         loadmodel->brushq3.data_normal3f = NULL;
5222         loadmodel->brushq3.data_texcoordtexture2f = NULL;
5223         loadmodel->brushq3.data_texcoordlightmap2f = NULL;
5224         loadmodel->brushq3.data_color4f = NULL;
5225         // free the no longer needed triangle data
5226         loadmodel->brushq3.num_triangles = 0;
5227         if (loadmodel->brushq3.data_element3i)
5228                 Mem_Free(loadmodel->brushq3.data_element3i);
5229         loadmodel->brushq3.data_element3i = NULL;
5230
5231         if(patchtess)
5232                 Mem_Free(patchtess);
5233 }
5234
5235 static void Mod_Q3BSP_LoadModels(lump_t *l)
5236 {
5237         q3dmodel_t *in;
5238         q3dmodel_t *out;
5239         int i, j, n, c, count;
5240
5241         in = (q3dmodel_t *)(mod_base + l->fileofs);
5242         if (l->filelen % sizeof(*in))
5243                 Host_Error("Mod_Q3BSP_LoadModels: funny lump size in %s",loadmodel->name);
5244         count = l->filelen / sizeof(*in);
5245         out = (q3dmodel_t *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
5246
5247         loadmodel->brushq3.data_models = out;
5248         loadmodel->brushq3.num_models = count;
5249
5250         for (i = 0;i < count;i++, in++, out++)
5251         {
5252                 for (j = 0;j < 3;j++)
5253                 {
5254                         out->mins[j] = LittleFloat(in->mins[j]);
5255                         out->maxs[j] = LittleFloat(in->maxs[j]);
5256                 }
5257                 n = LittleLong(in->firstface);
5258                 c = LittleLong(in->numfaces);
5259                 if (n < 0 || n + c > loadmodel->num_surfaces)
5260                         Host_Error("Mod_Q3BSP_LoadModels: invalid face range %i : %i (%i faces)", n, n + c, loadmodel->num_surfaces);
5261                 out->firstface = n;
5262                 out->numfaces = c;
5263                 n = LittleLong(in->firstbrush);
5264                 c = LittleLong(in->numbrushes);
5265                 if (n < 0 || n + c > loadmodel->brush.num_brushes)
5266                         Host_Error("Mod_Q3BSP_LoadModels: invalid brush range %i : %i (%i brushes)", n, n + c, loadmodel->brush.num_brushes);
5267                 out->firstbrush = n;
5268                 out->numbrushes = c;
5269         }
5270 }
5271
5272 static void Mod_Q3BSP_LoadLeafBrushes(lump_t *l)
5273 {
5274         int *in;
5275         int *out;
5276         int i, n, count;
5277
5278         in = (int *)(mod_base + l->fileofs);
5279         if (l->filelen % sizeof(*in))
5280                 Host_Error("Mod_Q3BSP_LoadLeafBrushes: funny lump size in %s",loadmodel->name);
5281         count = l->filelen / sizeof(*in);
5282         out = (int *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
5283
5284         loadmodel->brush.data_leafbrushes = out;
5285         loadmodel->brush.num_leafbrushes = count;
5286
5287         for (i = 0;i < count;i++, in++, out++)
5288         {
5289                 n = LittleLong(*in);
5290                 if (n < 0 || n >= loadmodel->brush.num_brushes)
5291                         Host_Error("Mod_Q3BSP_LoadLeafBrushes: invalid brush index %i (%i brushes)", n, loadmodel->brush.num_brushes);
5292                 *out = n;
5293         }
5294 }
5295
5296 static void Mod_Q3BSP_LoadLeafFaces(lump_t *l)
5297 {
5298         int *in;
5299         int *out;
5300         int i, n, count;
5301
5302         in = (int *)(mod_base + l->fileofs);
5303         if (l->filelen % sizeof(*in))
5304                 Host_Error("Mod_Q3BSP_LoadLeafFaces: funny lump size in %s",loadmodel->name);
5305         count = l->filelen / sizeof(*in);
5306         out = (int *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
5307
5308         loadmodel->brush.data_leafsurfaces = out;
5309         loadmodel->brush.num_leafsurfaces = count;
5310
5311         for (i = 0;i < count;i++, in++, out++)
5312         {
5313                 n = LittleLong(*in);
5314                 if (n < 0 || n >= loadmodel->num_surfaces)
5315                         Host_Error("Mod_Q3BSP_LoadLeafFaces: invalid face index %i (%i faces)", n, loadmodel->num_surfaces);
5316                 *out = n;
5317         }
5318 }
5319
5320 static void Mod_Q3BSP_LoadLeafs(lump_t *l)
5321 {
5322         q3dleaf_t *in;
5323         mleaf_t *out;
5324         int i, j, n, c, count;
5325
5326         in = (q3dleaf_t *)(mod_base + l->fileofs);
5327         if (l->filelen % sizeof(*in))
5328                 Host_Error("Mod_Q3BSP_LoadLeafs: funny lump size in %s",loadmodel->name);
5329         count = l->filelen / sizeof(*in);
5330         out = (mleaf_t *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
5331
5332         loadmodel->brush.data_leafs = out;
5333         loadmodel->brush.num_leafs = count;
5334
5335         for (i = 0;i < count;i++, in++, out++)
5336         {
5337                 out->parent = NULL;
5338                 out->plane = NULL;
5339                 out->clusterindex = LittleLong(in->clusterindex);
5340                 out->areaindex = LittleLong(in->areaindex);
5341                 for (j = 0;j < 3;j++)
5342                 {
5343                         // yes the mins/maxs are ints
5344                         out->mins[j] = LittleLong(in->mins[j]) - 1;
5345                         out->maxs[j] = LittleLong(in->maxs[j]) + 1;
5346                 }
5347                 n = LittleLong(in->firstleafface);
5348                 c = LittleLong(in->numleaffaces);
5349                 if (n < 0 || n + c > loadmodel->brush.num_leafsurfaces)
5350                         Host_Error("Mod_Q3BSP_LoadLeafs: invalid leafsurface range %i : %i (%i leafsurfaces)", n, n + c, loadmodel->brush.num_leafsurfaces);
5351                 out->firstleafsurface = loadmodel->brush.data_leafsurfaces + n;
5352                 out->numleafsurfaces = c;
5353                 n = LittleLong(in->firstleafbrush);
5354                 c = LittleLong(in->numleafbrushes);
5355                 if (n < 0 || n + c > loadmodel->brush.num_leafbrushes)
5356                         Host_Error("Mod_Q3BSP_LoadLeafs: invalid leafbrush range %i : %i (%i leafbrushes)", n, n + c, loadmodel->brush.num_leafbrushes);
5357                 out->firstleafbrush = loadmodel->brush.data_leafbrushes + n;
5358                 out->numleafbrushes = c;
5359         }
5360 }
5361
5362 static void Mod_Q3BSP_LoadNodes(lump_t *l)
5363 {
5364         q3dnode_t *in;
5365         mnode_t *out;
5366         int i, j, n, count;
5367
5368         in = (q3dnode_t *)(mod_base + l->fileofs);
5369         if (l->filelen % sizeof(*in))
5370                 Host_Error("Mod_Q3BSP_LoadNodes: funny lump size in %s",loadmodel->name);
5371         count = l->filelen / sizeof(*in);
5372         out = (mnode_t *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
5373
5374         loadmodel->brush.data_nodes = out;
5375         loadmodel->brush.num_nodes = count;
5376
5377         for (i = 0;i < count;i++, in++, out++)
5378         {
5379                 out->parent = NULL;
5380                 n = LittleLong(in->planeindex);
5381                 if (n < 0 || n >= loadmodel->brush.num_planes)
5382                         Host_Error("Mod_Q3BSP_LoadNodes: invalid planeindex %i (%i planes)", n, loadmodel->brush.num_planes);
5383                 out->plane = loadmodel->brush.data_planes + n;
5384                 for (j = 0;j < 2;j++)
5385                 {
5386                         n = LittleLong(in->childrenindex[j]);
5387                         if (n >= 0)
5388                         {
5389                                 if (n >= loadmodel->brush.num_nodes)
5390                                         Host_Error("Mod_Q3BSP_LoadNodes: invalid child node index %i (%i nodes)", n, loadmodel->brush.num_nodes);
5391                                 out->children[j] = loadmodel->brush.data_nodes + n;
5392                         }
5393                         else
5394                         {
5395                                 n = -1 - n;
5396                                 if (n >= loadmodel->brush.num_leafs)
5397                                         Host_Error("Mod_Q3BSP_LoadNodes: invalid child leaf index %i (%i leafs)", n, loadmodel->brush.num_leafs);
5398                                 out->children[j] = (mnode_t *)(loadmodel->brush.data_leafs + n);
5399                         }
5400                 }
5401                 for (j = 0;j < 3;j++)
5402                 {
5403                         // yes the mins/maxs are ints
5404                         out->mins[j] = LittleLong(in->mins[j]) - 1;
5405                         out->maxs[j] = LittleLong(in->maxs[j]) + 1;
5406                 }
5407         }
5408
5409         // set the parent pointers
5410         Mod_Q1BSP_LoadNodes_RecursiveSetParent(loadmodel->brush.data_nodes, NULL);
5411 }
5412
5413 static void Mod_Q3BSP_LoadLightGrid(lump_t *l)
5414 {
5415         q3dlightgrid_t *in;
5416         q3dlightgrid_t *out;
5417         int count;
5418
5419         in = (q3dlightgrid_t *)(mod_base + l->fileofs);
5420         if (l->filelen % sizeof(*in))
5421                 Host_Error("Mod_Q3BSP_LoadLightGrid: funny lump size in %s",loadmodel->name);
5422         loadmodel->brushq3.num_lightgrid_scale[0] = 1.0f / loadmodel->brushq3.num_lightgrid_cellsize[0];
5423         loadmodel->brushq3.num_lightgrid_scale[1] = 1.0f / loadmodel->brushq3.num_lightgrid_cellsize[1];
5424         loadmodel->brushq3.num_lightgrid_scale[2] = 1.0f / loadmodel->brushq3.num_lightgrid_cellsize[2];
5425         loadmodel->brushq3.num_lightgrid_imins[0] = (int)ceil(loadmodel->brushq3.data_models->mins[0] * loadmodel->brushq3.num_lightgrid_scale[0]);
5426         loadmodel->brushq3.num_lightgrid_imins[1] = (int)ceil(loadmodel->brushq3.data_models->mins[1] * loadmodel->brushq3.num_lightgrid_scale[1]);
5427         loadmodel->brushq3.num_lightgrid_imins[2] = (int)ceil(loadmodel->brushq3.data_models->mins[2] * loadmodel->brushq3.num_lightgrid_scale[2]);
5428         loadmodel->brushq3.num_lightgrid_imaxs[0] = (int)floor(loadmodel->brushq3.data_models->maxs[0] * loadmodel->brushq3.num_lightgrid_scale[0]);
5429         loadmodel->brushq3.num_lightgrid_imaxs[1] = (int)floor(loadmodel->brushq3.data_models->maxs[1] * loadmodel->brushq3.num_lightgrid_scale[1]);
5430         loadmodel->brushq3.num_lightgrid_imaxs[2] = (int)floor(loadmodel->brushq3.data_models->maxs[2] * loadmodel->brushq3.num_lightgrid_scale[2]);
5431         loadmodel->brushq3.num_lightgrid_isize[0] = loadmodel->brushq3.num_lightgrid_imaxs[0] - loadmodel->brushq3.num_lightgrid_imins[0] + 1;
5432         loadmodel->brushq3.num_lightgrid_isize[1] = loadmodel->brushq3.num_lightgrid_imaxs[1] - loadmodel->brushq3.num_lightgrid_imins[1] + 1;
5433         loadmodel->brushq3.num_lightgrid_isize[2] = loadmodel->brushq3.num_lightgrid_imaxs[2] - loadmodel->brushq3.num_lightgrid_imins[2] + 1;
5434         count = loadmodel->brushq3.num_lightgrid_isize[0] * loadmodel->brushq3.num_lightgrid_isize[1] * loadmodel->brushq3.num_lightgrid_isize[2];
5435         Matrix4x4_CreateScale3(&loadmodel->brushq3.num_lightgrid_indexfromworld, loadmodel->brushq3.num_lightgrid_scale[0], loadmodel->brushq3.num_lightgrid_scale[1], loadmodel->brushq3.num_lightgrid_scale[2]);
5436         Matrix4x4_ConcatTranslate(&loadmodel->brushq3.num_lightgrid_indexfromworld, -loadmodel->brushq3.num_lightgrid_imins[0] * loadmodel->brushq3.num_lightgrid_cellsize[0], -loadmodel->brushq3.num_lightgrid_imins[1] * loadmodel->brushq3.num_lightgrid_cellsize[1], -loadmodel->brushq3.num_lightgrid_imins[2] * loadmodel->brushq3.num_lightgrid_cellsize[2]);
5437
5438         // if lump is empty there is nothing to load, we can deal with that in the LightPoint code
5439         if (l->filelen)
5440         {
5441                 if (l->filelen < count * (int)sizeof(*in))
5442                 {
5443                         Con_Printf("Mod_Q3BSP_LoadLightGrid: invalid lightgrid lump size %i bytes, should be %i bytes (%ix%ix%i)", l->filelen, (int)(count * sizeof(*in)), loadmodel->brushq3.num_lightgrid_isize[0], loadmodel->brushq3.num_lightgrid_isize[1], loadmodel->brushq3.num_lightgrid_isize[2]);
5444                         return; // ignore the grid if we cannot understand it
5445                 }
5446                 if (l->filelen != count * (int)sizeof(*in))
5447                         Con_Printf("Mod_Q3BSP_LoadLightGrid: Warning: calculated lightgrid size %i bytes does not match lump size %i\n", (int)(count * sizeof(*in)), l->filelen);
5448                 out = (q3dlightgrid_t *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
5449                 loadmodel->brushq3.data_lightgrid = out;
5450                 loadmodel->brushq3.num_lightgrid = count;
5451                 // no swapping or validation necessary
5452                 memcpy(out, in, count * (int)sizeof(*out));
5453         }
5454 }
5455
5456 static void Mod_Q3BSP_LoadPVS(lump_t *l)
5457 {
5458         q3dpvs_t *in;
5459         int totalchains;
5460
5461         if (l->filelen == 0)
5462         {
5463                 int i;
5464                 // unvised maps often have cluster indices even without pvs, so check
5465                 // leafs to find real number of clusters
5466                 loadmodel->brush.num_pvsclusters = 1;
5467                 for (i = 0;i < loadmodel->brush.num_leafs;i++)
5468                         loadmodel->brush.num_pvsclusters = max(loadmodel->brush.num_pvsclusters, loadmodel->brush.data_leafs[i].clusterindex + 1);
5469
5470                 // create clusters
5471                 loadmodel->brush.num_pvsclusterbytes = (loadmodel->brush.num_pvsclusters + 7) / 8;
5472                 totalchains = loadmodel->brush.num_pvsclusterbytes * loadmodel->brush.num_pvsclusters;
5473                 loadmodel->brush.data_pvsclusters = (unsigned char *)Mem_Alloc(loadmodel->mempool, totalchains);
5474                 memset(loadmodel->brush.data_pvsclusters, 0xFF, totalchains);
5475                 return;
5476         }
5477
5478         in = (q3dpvs_t *)(mod_base + l->fileofs);
5479         if (l->filelen < 9)
5480                 Host_Error("Mod_Q3BSP_LoadPVS: funny lump size in %s",loadmodel->name);
5481
5482         loadmodel->brush.num_pvsclusters = LittleLong(in->numclusters);
5483         loadmodel->brush.num_pvsclusterbytes = LittleLong(in->chainlength);
5484         if (loadmodel->brush.num_pvsclusterbytes < ((loadmodel->brush.num_pvsclusters + 7) / 8))
5485                 Host_Error("Mod_Q3BSP_LoadPVS: (chainlength = %i) < ((numclusters = %i) + 7) / 8", loadmodel->brush.num_pvsclusterbytes, loadmodel->brush.num_pvsclusters);
5486         totalchains = loadmodel->brush.num_pvsclusterbytes * loadmodel->brush.num_pvsclusters;
5487         if (l->filelen < totalchains + (int)sizeof(*in))
5488                 Host_Error("Mod_Q3BSP_LoadPVS: lump too small ((numclusters = %i) * (chainlength = %i) + sizeof(q3dpvs_t) == %i bytes, lump is %i bytes)", loadmodel->brush.num_pvsclusters, loadmodel->brush.num_pvsclusterbytes, (int)(totalchains + sizeof(*in)), l->filelen);
5489
5490         loadmodel->brush.data_pvsclusters = (unsigned char *)Mem_Alloc(loadmodel->mempool, totalchains);
5491         memcpy(loadmodel->brush.data_pvsclusters, (unsigned char *)(in + 1), totalchains);
5492 }
5493
5494 static void Mod_Q3BSP_LightPoint(dp_model_t *model, const vec3_t p, vec3_t ambientcolor, vec3_t diffusecolor, vec3_t diffusenormal)
5495 {
5496         int i, j, k, index[3];
5497         float transformed[3], blend1, blend2, blend, stylescale;
5498         q3dlightgrid_t *a, *s;
5499
5500         // scale lighting by lightstyle[0] so that darkmode in dpmod works properly
5501         stylescale = r_refdef.scene.rtlightstylevalue[0];
5502
5503         if (!model->brushq3.num_lightgrid)
5504         {
5505                 ambientcolor[0] = stylescale;
5506                 ambientcolor[1] = stylescale;
5507                 ambientcolor[2] = stylescale;
5508                 return;
5509         }
5510
5511         Matrix4x4_Transform(&model->brushq3.num_lightgrid_indexfromworld, p, transformed);
5512         //Matrix4x4_Print(&model->brushq3.num_lightgrid_indexfromworld);
5513         //Con_Printf("%f %f %f transformed %f %f %f clamped ", p[0], p[1], p[2], transformed[0], transformed[1], transformed[2]);
5514         transformed[0] = bound(0, transformed[0], model->brushq3.num_lightgrid_isize[0] - 1);
5515         transformed[1] = bound(0, transformed[1], model->brushq3.num_lightgrid_isize[1] - 1);
5516         transformed[2] = bound(0, transformed[2], model->brushq3.num_lightgrid_isize[2] - 1);
5517         index[0] = (int)floor(transformed[0]);
5518         index[1] = (int)floor(transformed[1]);
5519         index[2] = (int)floor(transformed[2]);
5520         //Con_Printf("%f %f %f index %i %i %i:\n", transformed[0], transformed[1], transformed[2], index[0], index[1], index[2]);
5521
5522         // now lerp the values
5523         VectorClear(diffusenormal);
5524         a = &model->brushq3.data_lightgrid[(index[2] * model->brushq3.num_lightgrid_isize[1] + index[1]) * model->brushq3.num_lightgrid_isize[0] + index[0]];
5525         for (k = 0;k < 2;k++)
5526         {
5527                 blend1 = (k ? (transformed[2] - index[2]) : (1 - (transformed[2] - index[2])));
5528                 if (blend1 < 0.001f || index[2] + k >= model->brushq3.num_lightgrid_isize[2])
5529                         continue;
5530                 for (j = 0;j < 2;j++)
5531                 {
5532                         blend2 = blend1 * (j ? (transformed[1] - index[1]) : (1 - (transformed[1] - index[1])));
5533                         if (blend2 < 0.001f || index[1] + j >= model->brushq3.num_lightgrid_isize[1])
5534                                 continue;
5535                         for (i = 0;i < 2;i++)
5536                         {
5537                                 blend = blend2 * (i ? (transformed[0] - index[0]) : (1 - (transformed[0] - index[0]))) * stylescale;
5538                                 if (blend < 0.001f || index[0] + i >= model->brushq3.num_lightgrid_isize[0])
5539                                         continue;
5540                                 s = a + (k * model->brushq3.num_lightgrid_isize[1] + j) * model->brushq3.num_lightgrid_isize[0] + i;
5541                                 VectorMA(ambientcolor, blend * (1.0f / 128.0f), s->ambientrgb, ambientcolor);
5542                                 VectorMA(diffusecolor, blend * (1.0f / 128.0f), s->diffusergb, diffusecolor);
5543                                 // this uses the mod_md3_sin table because the values are
5544                                 // already in the 0-255 range, the 64+ bias fetches a cosine
5545                                 // instead of a sine value
5546                                 diffusenormal[0] += blend * (mod_md3_sin[64 + s->diffuseyaw] * mod_md3_sin[s->diffusepitch]);
5547                                 diffusenormal[1] += blend * (mod_md3_sin[     s->diffuseyaw] * mod_md3_sin[s->diffusepitch]);
5548                                 diffusenormal[2] += blend * (mod_md3_sin[64 + s->diffusepitch]);
5549                                 //Con_Printf("blend %f: ambient %i %i %i, diffuse %i %i %i, diffusepitch %i diffuseyaw %i (%f %f, normal %f %f %f)\n", blend, s->ambientrgb[0], s->ambientrgb[1], s->ambientrgb[2], s->diffusergb[0], s->diffusergb[1], s->diffusergb[2], s->diffusepitch, s->diffuseyaw, pitch, yaw, (cos(yaw) * cospitch), (sin(yaw) * cospitch), (-sin(pitch)));
5550                         }
5551                 }
5552         }
5553
5554         // normalize the light direction before turning
5555         VectorNormalize(diffusenormal);
5556         //Con_Printf("result: ambient %f %f %f diffuse %f %f %f diffusenormal %f %f %f\n", ambientcolor[0], ambientcolor[1], ambientcolor[2], diffusecolor[0], diffusecolor[1], diffusecolor[2], diffusenormal[0], diffusenormal[1], diffusenormal[2]);
5557 }
5558
5559 static int Mod_Q3BSP_TraceLineOfSight_RecursiveNodeCheck(mnode_t *node, double p1[3], double p2[3])
5560 {
5561         double t1, t2;
5562         double midf, mid[3];
5563         int ret, side;
5564
5565         // check for empty
5566         while (node->plane)
5567         {
5568                 // find the point distances
5569                 mplane_t *plane = node->plane;
5570                 if (plane->type < 3)
5571                 {
5572                         t1 = p1[plane->type] - plane->dist;
5573                         t2 = p2[plane->type] - plane->dist;
5574                 }
5575                 else
5576                 {
5577                         t1 = DotProduct (plane->normal, p1) - plane->dist;
5578                         t2 = DotProduct (plane->normal, p2) - plane->dist;
5579                 }
5580
5581                 if (t1 < 0)
5582                 {
5583                         if (t2 < 0)
5584                         {
5585                                 node = node->children[1];
5586                                 continue;
5587                         }
5588                         side = 1;
5589                 }
5590                 else
5591                 {
5592                         if (t2 >= 0)
5593                         {
5594                                 node = node->children[0];
5595                                 continue;
5596                         }
5597                         side = 0;
5598                 }
5599
5600                 midf = t1 / (t1 - t2);
5601                 VectorLerp(p1, midf, p2, mid);
5602
5603                 // recurse both sides, front side first
5604                 // return 2 if empty is followed by solid (hit something)
5605                 // do not return 2 if both are solid or both empty,
5606                 // or if start is solid and end is empty
5607                 // as these degenerate cases usually indicate the eye is in solid and
5608                 // should see the target point anyway
5609                 ret = Mod_Q3BSP_TraceLineOfSight_RecursiveNodeCheck(node->children[side    ], p1, mid);
5610                 if (ret != 0)
5611                         return ret;
5612                 ret = Mod_Q3BSP_TraceLineOfSight_RecursiveNodeCheck(node->children[side ^ 1], mid, p2);
5613                 if (ret != 1)
5614                         return ret;
5615                 return 2;
5616         }
5617         return ((mleaf_t *)node)->clusterindex < 0;
5618 }
5619
5620 static qboolean Mod_Q3BSP_TraceLineOfSight(struct model_s *model, const vec3_t start, const vec3_t end)
5621 {
5622         if (model->brush.submodel || mod_q3bsp_tracelineofsight_brushes.integer)
5623         {
5624                 trace_t trace;
5625                 model->TraceLine(model, NULL, NULL, &trace, start, end, SUPERCONTENTS_VISBLOCKERMASK);
5626                 return trace.fraction == 1;
5627         }
5628         else
5629         {
5630                 double tracestart[3], traceend[3];
5631                 VectorCopy(start, tracestart);
5632                 VectorCopy(end, traceend);
5633                 return !Mod_Q3BSP_TraceLineOfSight_RecursiveNodeCheck(model->brush.data_nodes, tracestart, traceend);
5634         }
5635 }
5636
5637 static void Mod_Q3BSP_TracePoint_RecursiveBSPNode(trace_t *trace, dp_model_t *model, mnode_t *node, const vec3_t point, int markframe)
5638 {
5639         int i;
5640         mleaf_t *leaf;
5641         colbrushf_t *brush;
5642         // find which leaf the point is in
5643         while (node->plane)
5644                 node = node->children[(node->plane->type < 3 ? point[node->plane->type] : DotProduct(point, node->plane->normal)) < node->plane->dist];
5645         // point trace the brushes
5646         leaf = (mleaf_t *)node;
5647         for (i = 0;i < leaf->numleafbrushes;i++)
5648         {
5649                 brush = model->brush.data_brushes[leaf->firstleafbrush[i]].colbrushf;
5650                 if (brush && brush->markframe != markframe && BoxesOverlap(point, point, brush->mins, brush->maxs))
5651                 {
5652                         brush->markframe = markframe;
5653                         Collision_TracePointBrushFloat(trace, point, brush);
5654                 }
5655         }
5656         // can't do point traces on curves (they have no thickness)
5657 }
5658
5659 static void Mod_Q3BSP_TraceLine_RecursiveBSPNode(trace_t *trace, dp_model_t *model, mnode_t *node, const vec3_t start, const vec3_t end, vec_t startfrac, vec_t endfrac, const vec3_t linestart, const vec3_t lineend, int markframe, const vec3_t segmentmins, const vec3_t segmentmaxs)
5660 {
5661         int i, startside, endside;
5662         float dist1, dist2, midfrac, mid[3], nodesegmentmins[3], nodesegmentmaxs[3];
5663         mleaf_t *leaf;
5664         msurface_t *surface;
5665         mplane_t *plane;
5666         colbrushf_t *brush;
5667         // walk the tree until we hit a leaf, recursing for any split cases
5668         while (node->plane)
5669         {
5670                 // abort if this part of the bsp tree can not be hit by this trace
5671 //              if (!(node->combinedsupercontents & trace->hitsupercontentsmask))
5672 //                      return;
5673                 plane = node->plane;
5674                 // axial planes are much more common than non-axial, so an optimized
5675                 // axial case pays off here
5676                 if (plane->type < 3)
5677                 {
5678                         dist1 = start[plane->type] - plane->dist;
5679                         dist2 = end[plane->type] - plane->dist;
5680                 }
5681                 else
5682                 {
5683                         dist1 = DotProduct(start, plane->normal) - plane->dist;
5684                         dist2 = DotProduct(end, plane->normal) - plane->dist;
5685                 }
5686                 startside = dist1 < 0;
5687                 endside = dist2 < 0;
5688                 if (startside == endside)
5689                 {
5690                         // most of the time the line fragment is on one side of the plane
5691                         node = node->children[startside];
5692                 }
5693                 else
5694                 {
5695                         // line crosses node plane, split the line
5696                         dist1 = PlaneDiff(linestart, plane);
5697                         dist2 = PlaneDiff(lineend, plane);
5698                         midfrac = dist1 / (dist1 - dist2);
5699                         VectorLerp(linestart, midfrac, lineend, mid);
5700                         // take the near side first
5701                         Mod_Q3BSP_TraceLine_RecursiveBSPNode(trace, model, node->children[startside], start, mid, startfrac, midfrac, linestart, lineend, markframe, segmentmins, segmentmaxs);
5702                         // if we found an impact on the front side, don't waste time
5703                         // exploring the far side
5704                         if (midfrac <= trace->realfraction)
5705                                 Mod_Q3BSP_TraceLine_RecursiveBSPNode(trace, model, node->children[endside], mid, end, midfrac, endfrac, linestart, lineend, markframe, segmentmins, segmentmaxs);
5706                         return;
5707                 }
5708         }
5709         // abort if this part of the bsp tree can not be hit by this trace
5710 //      if (!(node->combinedsupercontents & trace->hitsupercontentsmask))
5711 //              return;
5712         // hit a leaf
5713         nodesegmentmins[0] = min(start[0], end[0]) - 1;
5714         nodesegmentmins[1] = min(start[1], end[1]) - 1;
5715         nodesegmentmins[2] = min(start[2], end[2]) - 1;
5716         nodesegmentmaxs[0] = max(start[0], end[0]) + 1;
5717         nodesegmentmaxs[1] = max(start[1], end[1]) + 1;
5718         nodesegmentmaxs[2] = max(start[2], end[2]) + 1;
5719         // line trace the brushes
5720         leaf = (mleaf_t *)node;
5721         for (i = 0;i < leaf->numleafbrushes;i++)
5722         {
5723                 brush = model->brush.data_brushes[leaf->firstleafbrush[i]].colbrushf;
5724                 if (brush && brush->markframe != markframe && BoxesOverlap(nodesegmentmins, nodesegmentmaxs, brush->mins, brush->maxs))
5725                 {
5726                         brush->markframe = markframe;
5727                         Collision_TraceLineBrushFloat(trace, linestart, lineend, brush, brush);
5728                 }
5729         }
5730         // can't do point traces on curves (they have no thickness)
5731         if (leaf->containscollisionsurfaces && mod_q3bsp_curves_collisions.integer && !VectorCompare(start, end))
5732         {
5733                 // line trace the curves
5734                 for (i = 0;i < leaf->numleafsurfaces;i++)
5735                 {
5736                         surface = model->data_surfaces + leaf->firstleafsurface[i];
5737                         if (surface->num_collisiontriangles && surface->collisionmarkframe != markframe && BoxesOverlap(nodesegmentmins, nodesegmentmaxs, surface->mins, surface->maxs))
5738                         {
5739                                 surface->collisionmarkframe = markframe;
5740                                 Collision_TraceLineTriangleMeshFloat(trace, linestart, lineend, surface->num_collisiontriangles, surface->data_collisionelement3i, surface->data_collisionvertex3f, surface->num_collisionbboxstride, surface->data_collisionbbox6f, surface->texture->supercontents, surface->texture->surfaceflags, surface->texture, segmentmins, segmentmaxs);
5741                         }
5742                 }
5743         }
5744 }
5745
5746 static void Mod_Q3BSP_TraceBrush_RecursiveBSPNode(trace_t *trace, dp_model_t *model, mnode_t *node, const colbrushf_t *thisbrush_start, const colbrushf_t *thisbrush_end, int markframe, const vec3_t segmentmins, const vec3_t segmentmaxs)
5747 {
5748         int i;
5749         int sides;
5750         mleaf_t *leaf;
5751         colbrushf_t *brush;
5752         msurface_t *surface;
5753         mplane_t *plane;
5754         float nodesegmentmins[3], nodesegmentmaxs[3];
5755         // walk the tree until we hit a leaf, recursing for any split cases
5756         while (node->plane)
5757         {
5758                 // abort if this part of the bsp tree can not be hit by this trace
5759 //              if (!(node->combinedsupercontents & trace->hitsupercontentsmask))
5760 //                      return;
5761                 plane = node->plane;
5762                 // axial planes are much more common than non-axial, so an optimized
5763                 // axial case pays off here
5764                 if (plane->type < 3)
5765                 {
5766                         // this is an axial plane, compare bounding box directly to it and
5767                         // recurse sides accordingly
5768                         // recurse down node sides
5769                         // use an inlined axial BoxOnPlaneSide to slightly reduce overhead
5770                         //sides = BoxOnPlaneSide(nodesegmentmins, nodesegmentmaxs, plane);
5771                         //sides = ((segmentmaxs[plane->type] >= plane->dist) | ((segmentmins[plane->type] < plane->dist) << 1));
5772                         sides = ((segmentmaxs[plane->type] >= plane->dist) + ((segmentmins[plane->type] < plane->dist) * 2));
5773                 }
5774                 else
5775                 {
5776                         // this is a non-axial plane, so check if the start and end boxes
5777                         // are both on one side of the plane to handle 'diagonal' cases
5778                         sides = BoxOnPlaneSide(thisbrush_start->mins, thisbrush_start->maxs, plane) | BoxOnPlaneSide(thisbrush_end->mins, thisbrush_end->maxs, plane);
5779                 }
5780                 if (sides == 3)
5781                 {
5782                         // segment crosses plane
5783                         Mod_Q3BSP_TraceBrush_RecursiveBSPNode(trace, model, node->children[0], thisbrush_start, thisbrush_end, markframe, segmentmins, segmentmaxs);
5784                         sides = 2;
5785                 }
5786                 // if sides == 0 then the trace itself is bogus (Not A Number values),
5787                 // in this case we simply pretend the trace hit nothing
5788                 if (sides == 0)
5789                         return; // ERROR: NAN bounding box!
5790                 // take whichever side the segment box is on
5791                 node = node->children[sides - 1];
5792         }
5793         // abort if this part of the bsp tree can not be hit by this trace
5794 //      if (!(node->combinedsupercontents & trace->hitsupercontentsmask))
5795 //              return;
5796         nodesegmentmins[0] = max(segmentmins[0], node->mins[0] - 1);
5797         nodesegmentmins[1] = max(segmentmins[1], node->mins[1] - 1);
5798         nodesegmentmins[2] = max(segmentmins[2], node->mins[2] - 1);
5799         nodesegmentmaxs[0] = min(segmentmaxs[0], node->maxs[0] + 1);
5800         nodesegmentmaxs[1] = min(segmentmaxs[1], node->maxs[1] + 1);
5801         nodesegmentmaxs[2] = min(segmentmaxs[2], node->maxs[2] + 1);
5802         // hit a leaf
5803         leaf = (mleaf_t *)node;
5804         for (i = 0;i < leaf->numleafbrushes;i++)
5805         {
5806                 brush = model->brush.data_brushes[leaf->firstleafbrush[i]].colbrushf;
5807                 if (brush && brush->markframe != markframe && BoxesOverlap(nodesegmentmins, nodesegmentmaxs, brush->mins, brush->maxs))
5808                 {
5809                         brush->markframe = markframe;
5810                         Collision_TraceBrushBrushFloat(trace, thisbrush_start, thisbrush_end, brush, brush);
5811                 }
5812         }
5813         if (leaf->containscollisionsurfaces && mod_q3bsp_curves_collisions.integer)
5814         {
5815                 for (i = 0;i < leaf->numleafsurfaces;i++)
5816                 {
5817                         surface = model->data_surfaces + leaf->firstleafsurface[i];
5818                         if (surface->num_collisiontriangles && surface->collisionmarkframe != markframe && BoxesOverlap(nodesegmentmins, nodesegmentmaxs, surface->mins, surface->maxs))
5819                         {
5820                                 surface->collisionmarkframe = markframe;
5821                                 Collision_TraceBrushTriangleMeshFloat(trace, thisbrush_start, thisbrush_end, surface->num_collisiontriangles, surface->data_collisionelement3i, surface->data_collisionvertex3f, surface->num_collisionbboxstride, surface->data_collisionbbox6f, surface->texture->supercontents, surface->texture->surfaceflags, surface->texture, segmentmins, segmentmaxs);
5822                         }
5823                 }
5824         }
5825 }
5826
5827 static int markframe = 0;
5828
5829 static void Mod_Q3BSP_TracePoint(dp_model_t *model, const frameblend_t *frameblend, const skeleton_t *skeleton, trace_t *trace, const vec3_t start, int hitsupercontentsmask)
5830 {
5831         int i;
5832         q3mbrush_t *brush;
5833         memset(trace, 0, sizeof(*trace));
5834         trace->fraction = 1;
5835         trace->realfraction = 1;
5836         trace->hitsupercontentsmask = hitsupercontentsmask;
5837         if (model->brush.submodel)
5838         {
5839                 for (i = 0, brush = model->brush.data_brushes + model->firstmodelbrush;i < model->nummodelbrushes;i++, brush++)
5840                         if (brush->colbrushf)
5841                                 Collision_TracePointBrushFloat(trace, start, brush->colbrushf);
5842         }
5843         else
5844                 Mod_Q3BSP_TracePoint_RecursiveBSPNode(trace, model, model->brush.data_nodes, start, ++markframe);
5845 }
5846
5847 static void Mod_Q3BSP_TraceLine(dp_model_t *model, const frameblend_t *frameblend, const skeleton_t *skeleton, trace_t *trace, const vec3_t start, const vec3_t end, int hitsupercontentsmask)
5848 {
5849         int i;
5850         float segmentmins[3], segmentmaxs[3];
5851         msurface_t *surface;
5852         q3mbrush_t *brush;
5853
5854         if (VectorCompare(start, end))
5855         {
5856                 Mod_Q3BSP_TracePoint(model, frameblend, skeleton, trace, start, hitsupercontentsmask);
5857                 return;
5858         }
5859
5860         memset(trace, 0, sizeof(*trace));
5861         trace->fraction = 1;
5862         trace->realfraction = 1;
5863         trace->hitsupercontentsmask = hitsupercontentsmask;
5864         segmentmins[0] = min(start[0], end[0]) - 1;
5865         segmentmins[1] = min(start[1], end[1]) - 1;
5866         segmentmins[2] = min(start[2], end[2]) - 1;
5867         segmentmaxs[0] = max(start[0], end[0]) + 1;
5868         segmentmaxs[1] = max(start[1], end[1]) + 1;
5869         segmentmaxs[2] = max(start[2], end[2]) + 1;
5870         if (model->brush.submodel)
5871         {
5872                 for (i = 0, brush = model->brush.data_brushes + model->firstmodelbrush;i < model->nummodelbrushes;i++, brush++)
5873                         if (brush->colbrushf)
5874                                 Collision_TraceLineBrushFloat(trace, start, end, brush->colbrushf, brush->colbrushf);
5875                 if (mod_q3bsp_curves_collisions.integer)
5876                         for (i = 0, surface = model->data_surfaces + model->firstmodelsurface;i < model->nummodelsurfaces;i++, surface++)
5877                                 if (surface->num_collisiontriangles)
5878                                         Collision_TraceLineTriangleMeshFloat(trace, start, end, surface->num_collisiontriangles, surface->data_collisionelement3i, surface->data_collisionvertex3f, surface->num_collisionbboxstride, surface->data_collisionbbox6f, surface->texture->supercontents, surface->texture->surfaceflags, surface->texture, segmentmins, segmentmaxs);
5879         }
5880         else
5881                 Mod_Q3BSP_TraceLine_RecursiveBSPNode(trace, model, model->brush.data_nodes, start, end, 0, 1, start, end, ++markframe, segmentmins, segmentmaxs);
5882 }
5883
5884 static void Mod_Q3BSP_TraceBox(dp_model_t *model, const frameblend_t *frameblend, const skeleton_t *skeleton, trace_t *trace, const vec3_t start, const vec3_t boxmins, const vec3_t boxmaxs, const vec3_t end, int hitsupercontentsmask)
5885 {
5886         int i;
5887         float segmentmins[3], segmentmaxs[3];
5888         msurface_t *surface;
5889         q3mbrush_t *brush;
5890         colboxbrushf_t thisbrush_start, thisbrush_end;
5891         vec3_t boxstartmins, boxstartmaxs, boxendmins, boxendmaxs;
5892
5893         if (mod_q3bsp_optimizedtraceline.integer && VectorCompare(boxmins, boxmaxs))
5894         {
5895                 vec3_t shiftstart, shiftend;
5896                 VectorAdd(start, boxmins, shiftstart);
5897                 VectorAdd(end, boxmins, shiftend);
5898                 if (VectorCompare(start, end))
5899                         Mod_Q3BSP_TracePoint(model, frameblend, skeleton, trace, shiftstart, hitsupercontentsmask);
5900                 else
5901                 {
5902                         Mod_Q3BSP_TraceLine(model, frameblend, skeleton, trace, shiftstart, shiftend, hitsupercontentsmask);
5903                         VectorSubtract(trace->endpos, boxmins, trace->endpos);
5904                 }
5905                 return;
5906         }
5907
5908         // box trace, performed as brush trace
5909         memset(trace, 0, sizeof(*trace));
5910         trace->fraction = 1;
5911         trace->realfraction = 1;
5912         trace->hitsupercontentsmask = hitsupercontentsmask;
5913         segmentmins[0] = min(start[0], end[0]) + boxmins[0] - 1;
5914         segmentmins[1] = min(start[1], end[1]) + boxmins[1] - 1;
5915         segmentmins[2] = min(start[2], end[2]) + boxmins[2] - 1;
5916         segmentmaxs[0] = max(start[0], end[0]) + boxmaxs[0] + 1;
5917         segmentmaxs[1] = max(start[1], end[1]) + boxmaxs[1] + 1;
5918         segmentmaxs[2] = max(start[2], end[2]) + boxmaxs[2] + 1;
5919         VectorAdd(start, boxmins, boxstartmins);
5920         VectorAdd(start, boxmaxs, boxstartmaxs);
5921         VectorAdd(end, boxmins, boxendmins);
5922         VectorAdd(end, boxmaxs, boxendmaxs);
5923         Collision_BrushForBox(&thisbrush_start, boxstartmins, boxstartmaxs, 0, 0, NULL);
5924         Collision_BrushForBox(&thisbrush_end, boxendmins, boxendmaxs, 0, 0, NULL);
5925         if (model->brush.submodel)
5926         {
5927                 for (i = 0, brush = model->brush.data_brushes + model->firstmodelbrush;i < model->nummodelbrushes;i++, brush++)
5928                         if (brush->colbrushf)
5929                                 Collision_TraceBrushBrushFloat(trace, &thisbrush_start.brush, &thisbrush_end.brush, brush->colbrushf, brush->colbrushf);
5930                 if (mod_q3bsp_curves_collisions.integer)
5931                         for (i = 0, surface = model->data_surfaces + model->firstmodelsurface;i < model->nummodelsurfaces;i++, surface++)
5932                                 if (surface->num_collisiontriangles)
5933                                         Collision_TraceBrushTriangleMeshFloat(trace, &thisbrush_start.brush, &thisbrush_end.brush, surface->num_collisiontriangles, surface->data_collisionelement3i, surface->data_collisionvertex3f, surface->num_collisionbboxstride, surface->data_collisionbbox6f, surface->texture->supercontents, surface->texture->surfaceflags, surface->texture, segmentmins, segmentmaxs);
5934         }
5935         else
5936                 Mod_Q3BSP_TraceBrush_RecursiveBSPNode(trace, model, model->brush.data_nodes, &thisbrush_start.brush, &thisbrush_end.brush, ++markframe, segmentmins, segmentmaxs);
5937 }
5938
5939 static int Mod_Q3BSP_PointSuperContents(struct model_s *model, int frame, const vec3_t point)
5940 {
5941         int i;
5942         int supercontents = 0;
5943         q3mbrush_t *brush;
5944         // test if the point is inside each brush
5945         if (model->brush.submodel)
5946         {
5947                 // submodels are effectively one leaf
5948                 for (i = 0, brush = model->brush.data_brushes + model->firstmodelbrush;i < model->nummodelbrushes;i++, brush++)
5949                         if (brush->colbrushf && Collision_PointInsideBrushFloat(point, brush->colbrushf))
5950                                 supercontents |= brush->colbrushf->supercontents;
5951         }
5952         else
5953         {
5954                 mnode_t *node = model->brush.data_nodes;
5955                 mleaf_t *leaf;
5956                 // find which leaf the point is in
5957                 while (node->plane)
5958                         node = node->children[(node->plane->type < 3 ? point[node->plane->type] : DotProduct(point, node->plane->normal)) < node->plane->dist];
5959                 leaf = (mleaf_t *)node;
5960                 // now check the brushes in the leaf
5961                 for (i = 0;i < leaf->numleafbrushes;i++)
5962                 {
5963                         brush = model->brush.data_brushes + leaf->firstleafbrush[i];
5964                         if (brush->colbrushf && Collision_PointInsideBrushFloat(point, brush->colbrushf))
5965                                 supercontents |= brush->colbrushf->supercontents;
5966                 }
5967         }
5968         return supercontents;
5969 }
5970
5971 static int Mod_Q3BSP_SuperContentsFromNativeContents(dp_model_t *model, int nativecontents)
5972 {
5973         int supercontents = 0;
5974         if (nativecontents & CONTENTSQ3_SOLID)
5975                 supercontents |= SUPERCONTENTS_SOLID;
5976         if (nativecontents & CONTENTSQ3_WATER)
5977                 supercontents |= SUPERCONTENTS_WATER;
5978         if (nativecontents & CONTENTSQ3_SLIME)
5979                 supercontents |= SUPERCONTENTS_SLIME;
5980         if (nativecontents & CONTENTSQ3_LAVA)
5981                 supercontents |= SUPERCONTENTS_LAVA;
5982         if (nativecontents & CONTENTSQ3_BODY)
5983                 supercontents |= SUPERCONTENTS_BODY;
5984         if (nativecontents & CONTENTSQ3_CORPSE)
5985                 supercontents |= SUPERCONTENTS_CORPSE;
5986         if (nativecontents & CONTENTSQ3_NODROP)
5987                 supercontents |= SUPERCONTENTS_NODROP;
5988         if (nativecontents & CONTENTSQ3_PLAYERCLIP)
5989                 supercontents |= SUPERCONTENTS_PLAYERCLIP;
5990         if (nativecontents & CONTENTSQ3_MONSTERCLIP)
5991                 supercontents |= SUPERCONTENTS_MONSTERCLIP;
5992         if (nativecontents & CONTENTSQ3_DONOTENTER)
5993                 supercontents |= SUPERCONTENTS_DONOTENTER;
5994         if (nativecontents & CONTENTSQ3_BOTCLIP)
5995                 supercontents |= SUPERCONTENTS_BOTCLIP;
5996         if (!(nativecontents & CONTENTSQ3_TRANSLUCENT))
5997                 supercontents |= SUPERCONTENTS_OPAQUE;
5998         return supercontents;
5999 }
6000
6001 static int Mod_Q3BSP_NativeContentsFromSuperContents(dp_model_t *model, int supercontents)
6002 {
6003         int nativecontents = 0;
6004         if (supercontents & SUPERCONTENTS_SOLID)
6005                 nativecontents |= CONTENTSQ3_SOLID;
6006         if (supercontents & SUPERCONTENTS_WATER)
6007                 nativecontents |= CONTENTSQ3_WATER;
6008         if (supercontents & SUPERCONTENTS_SLIME)
6009                 nativecontents |= CONTENTSQ3_SLIME;
6010         if (supercontents & SUPERCONTENTS_LAVA)
6011                 nativecontents |= CONTENTSQ3_LAVA;
6012         if (supercontents & SUPERCONTENTS_BODY)
6013                 nativecontents |= CONTENTSQ3_BODY;
6014         if (supercontents & SUPERCONTENTS_CORPSE)
6015                 nativecontents |= CONTENTSQ3_CORPSE;
6016         if (supercontents & SUPERCONTENTS_NODROP)
6017                 nativecontents |= CONTENTSQ3_NODROP;
6018         if (supercontents & SUPERCONTENTS_PLAYERCLIP)
6019                 nativecontents |= CONTENTSQ3_PLAYERCLIP;
6020         if (supercontents & SUPERCONTENTS_MONSTERCLIP)
6021                 nativecontents |= CONTENTSQ3_MONSTERCLIP;
6022         if (supercontents & SUPERCONTENTS_DONOTENTER)
6023                 nativecontents |= CONTENTSQ3_DONOTENTER;
6024         if (supercontents & SUPERCONTENTS_BOTCLIP)
6025                 nativecontents |= CONTENTSQ3_BOTCLIP;
6026         if (!(supercontents & SUPERCONTENTS_OPAQUE))
6027                 nativecontents |= CONTENTSQ3_TRANSLUCENT;
6028         return nativecontents;
6029 }
6030
6031 void Mod_Q3BSP_RecursiveFindNumLeafs(mnode_t *node)
6032 {
6033         int numleafs;
6034         while (node->plane)
6035         {
6036                 Mod_Q3BSP_RecursiveFindNumLeafs(node->children[0]);
6037                 node = node->children[1];
6038         }
6039         numleafs = ((mleaf_t *)node - loadmodel->brush.data_leafs) + 1;
6040         if (loadmodel->brush.num_leafs < numleafs)
6041                 loadmodel->brush.num_leafs = numleafs;
6042 }
6043
6044 void Mod_Q3BSP_Load(dp_model_t *mod, void *buffer, void *bufferend)
6045 {
6046         int i, j, numshadowmeshtriangles, lumps;
6047         q3dheader_t *header;
6048         float corner[3], yawradius, modelradius;
6049         msurface_t *surface;
6050
6051         mod->modeldatatypestring = "Q3BSP";
6052
6053         mod->type = mod_brushq3;
6054         mod->numframes = 2; // although alternate textures are not supported it is annoying to complain about no such frame 1
6055         mod->numskins = 1;
6056
6057         header = (q3dheader_t *)buffer;
6058         if((char *) bufferend < (char *) buffer + sizeof(q3dheader_t))
6059                 Host_Error("Mod_Q3BSP_Load: %s is smaller than its header", mod->name);
6060
6061         i = LittleLong(header->version);
6062         if (i != Q3BSPVERSION && i != Q3BSPVERSION_IG && i != Q3BSPVERSION_LIVE)
6063                 Host_Error("Mod_Q3BSP_Load: %s has wrong version number (%i, should be %i)", mod->name, i, Q3BSPVERSION);
6064
6065         mod->soundfromcenter = true;
6066         mod->TraceBox = Mod_Q3BSP_TraceBox;
6067         mod->TraceLine = Mod_Q3BSP_TraceLine;
6068         mod->TracePoint = Mod_Q3BSP_TracePoint;
6069         mod->PointSuperContents = Mod_Q3BSP_PointSuperContents;
6070         mod->brush.TraceLineOfSight = Mod_Q3BSP_TraceLineOfSight;
6071         mod->brush.SuperContentsFromNativeContents = Mod_Q3BSP_SuperContentsFromNativeContents;
6072         mod->brush.NativeContentsFromSuperContents = Mod_Q3BSP_NativeContentsFromSuperContents;
6073         mod->brush.GetPVS = Mod_Q1BSP_GetPVS;
6074         mod->brush.FatPVS = Mod_Q1BSP_FatPVS;
6075         mod->brush.BoxTouchingPVS = Mod_Q1BSP_BoxTouchingPVS;
6076         mod->brush.BoxTouchingLeafPVS = Mod_Q1BSP_BoxTouchingLeafPVS;
6077         mod->brush.BoxTouchingVisibleLeafs = Mod_Q1BSP_BoxTouchingVisibleLeafs;
6078         mod->brush.FindBoxClusters = Mod_Q1BSP_FindBoxClusters;
6079         mod->brush.LightPoint = Mod_Q3BSP_LightPoint;
6080         mod->brush.FindNonSolidLocation = Mod_Q1BSP_FindNonSolidLocation;
6081         mod->brush.AmbientSoundLevelsForPoint = NULL;
6082         mod->brush.RoundUpToHullSize = NULL;
6083         mod->brush.PointInLeaf = Mod_Q1BSP_PointInLeaf;
6084         mod->Draw = R_Q1BSP_Draw;
6085         mod->DrawDepth = R_Q1BSP_DrawDepth;
6086         mod->DrawDebug = R_Q1BSP_DrawDebug;
6087         mod->DrawPrepass = R_Q1BSP_DrawPrepass;
6088         mod->GetLightInfo = R_Q1BSP_GetLightInfo;
6089         mod->CompileShadowMap = R_Q1BSP_CompileShadowMap;
6090         mod->DrawShadowMap = R_Q1BSP_DrawShadowMap;
6091         mod->CompileShadowVolume = R_Q1BSP_CompileShadowVolume;
6092         mod->DrawShadowVolume = R_Q1BSP_DrawShadowVolume;
6093         mod->DrawLight = R_Q1BSP_DrawLight;
6094
6095         mod_base = (unsigned char *)header;
6096
6097         // swap all the lumps
6098         header->ident = LittleLong(header->ident);
6099         header->version = LittleLong(header->version);
6100         lumps = (header->version == Q3BSPVERSION_LIVE) ? Q3HEADER_LUMPS_LIVE : Q3HEADER_LUMPS;
6101         for (i = 0;i < lumps;i++)
6102         {
6103                 j = (header->lumps[i].fileofs = LittleLong(header->lumps[i].fileofs));
6104                 if((char *) bufferend < (char *) buffer + j)
6105                         Host_Error("Mod_Q3BSP_Load: %s has a lump that starts outside the file!", mod->name);
6106                 j += (header->lumps[i].filelen = LittleLong(header->lumps[i].filelen));
6107                 if((char *) bufferend < (char *) buffer + j)
6108                         Host_Error("Mod_Q3BSP_Load: %s has a lump that ends outside the file!", mod->name);
6109         }
6110         /*
6111          * NO, do NOT clear them!
6112          * they contain actual data referenced by other stuff.
6113          * Instead, before using the advertisements lump, check header->versio
6114          * again!
6115          * Sorry, but otherwise it breaks memory of the first lump.
6116         for (i = lumps;i < Q3HEADER_LUMPS_MAX;i++)
6117         {
6118                 header->lumps[i].fileofs = 0;
6119                 header->lumps[i].filelen = 0;
6120         }
6121         */
6122
6123         mod->brush.qw_md4sum = 0;
6124         mod->brush.qw_md4sum2 = 0;
6125         for (i = 0;i < lumps;i++)
6126         {
6127                 if (i == Q3LUMP_ENTITIES)
6128                         continue;
6129                 mod->brush.qw_md4sum ^= Com_BlockChecksum(mod_base + header->lumps[i].fileofs, header->lumps[i].filelen);
6130                 if (i == Q3LUMP_PVS || i == Q3LUMP_LEAFS || i == Q3LUMP_NODES)
6131                         continue;
6132                 mod->brush.qw_md4sum2 ^= Com_BlockChecksum(mod_base + header->lumps[i].fileofs, header->lumps[i].filelen);
6133
6134                 // all this checksumming can take a while, so let's send keepalives here too
6135                 CL_KeepaliveMessage(false);
6136         }
6137
6138         Mod_Q3BSP_LoadEntities(&header->lumps[Q3LUMP_ENTITIES]);
6139         Mod_Q3BSP_LoadTextures(&header->lumps[Q3LUMP_TEXTURES]);
6140         Mod_Q3BSP_LoadPlanes(&header->lumps[Q3LUMP_PLANES]);
6141         if (header->version == Q3BSPVERSION_IG)
6142                 Mod_Q3BSP_LoadBrushSides_IG(&header->lumps[Q3LUMP_BRUSHSIDES]);
6143         else
6144                 Mod_Q3BSP_LoadBrushSides(&header->lumps[Q3LUMP_BRUSHSIDES]);
6145         Mod_Q3BSP_LoadBrushes(&header->lumps[Q3LUMP_BRUSHES]);
6146         Mod_Q3BSP_LoadEffects(&header->lumps[Q3LUMP_EFFECTS]);
6147         Mod_Q3BSP_LoadVertices(&header->lumps[Q3LUMP_VERTICES]);
6148         Mod_Q3BSP_LoadTriangles(&header->lumps[Q3LUMP_TRIANGLES]);
6149         Mod_Q3BSP_LoadLightmaps(&header->lumps[Q3LUMP_LIGHTMAPS], &header->lumps[Q3LUMP_FACES]);
6150         Mod_Q3BSP_LoadFaces(&header->lumps[Q3LUMP_FACES]);
6151         Mod_Q3BSP_LoadModels(&header->lumps[Q3LUMP_MODELS]);
6152         Mod_Q3BSP_LoadLeafBrushes(&header->lumps[Q3LUMP_LEAFBRUSHES]);
6153         Mod_Q3BSP_LoadLeafFaces(&header->lumps[Q3LUMP_LEAFFACES]);
6154         Mod_Q3BSP_LoadLeafs(&header->lumps[Q3LUMP_LEAFS]);
6155         Mod_Q3BSP_LoadNodes(&header->lumps[Q3LUMP_NODES]);
6156         Mod_Q3BSP_LoadLightGrid(&header->lumps[Q3LUMP_LIGHTGRID]);
6157         Mod_Q3BSP_LoadPVS(&header->lumps[Q3LUMP_PVS]);
6158         loadmodel->brush.numsubmodels = loadmodel->brushq3.num_models;
6159
6160         // the MakePortals code works fine on the q3bsp data as well
6161         Mod_Q1BSP_MakePortals();
6162
6163         // FIXME: shader alpha should replace r_wateralpha support in q3bsp
6164         loadmodel->brush.supportwateralpha = true;
6165
6166         // make a single combined shadow mesh to allow optimized shadow volume creation
6167         numshadowmeshtriangles = 0;
6168         if (cls.state != ca_dedicated)
6169         {
6170                 for (j = 0, surface = loadmodel->data_surfaces;j < loadmodel->num_surfaces;j++, surface++)
6171                 {
6172                         surface->num_firstshadowmeshtriangle = numshadowmeshtriangles;
6173                         numshadowmeshtriangles += surface->num_triangles;
6174                 }
6175                 loadmodel->brush.shadowmesh = Mod_ShadowMesh_Begin(loadmodel->mempool, numshadowmeshtriangles * 3, numshadowmeshtriangles, NULL, NULL, NULL, false, false, true);
6176                 for (j = 0, surface = loadmodel->data_surfaces;j < loadmodel->num_surfaces;j++, surface++)
6177                         if (surface->num_triangles > 0)
6178                                 Mod_ShadowMesh_AddMesh(loadmodel->mempool, loadmodel->brush.shadowmesh, NULL, NULL, NULL, loadmodel->surfmesh.data_vertex3f, NULL, NULL, NULL, NULL, surface->num_triangles, (loadmodel->surfmesh.data_element3i + 3 * surface->num_firsttriangle));
6179                 loadmodel->brush.shadowmesh = Mod_ShadowMesh_Finish(loadmodel->mempool, loadmodel->brush.shadowmesh, false, true, false);
6180                 Mod_BuildTriangleNeighbors(loadmodel->brush.shadowmesh->neighbor3i, loadmodel->brush.shadowmesh->element3i, loadmodel->brush.shadowmesh->numtriangles);
6181         }
6182
6183         loadmodel->brush.num_leafs = 0;
6184         Mod_Q3BSP_RecursiveFindNumLeafs(loadmodel->brush.data_nodes);
6185
6186         if (loadmodel->brush.numsubmodels)
6187                 loadmodel->brush.submodels = (dp_model_t **)Mem_Alloc(loadmodel->mempool, loadmodel->brush.numsubmodels * sizeof(dp_model_t *));
6188
6189         mod = loadmodel;
6190         for (i = 0;i < loadmodel->brush.numsubmodels;i++)
6191         {
6192                 if (i > 0)
6193                 {
6194                         char name[10];
6195                         // duplicate the basic information
6196                         dpsnprintf(name, sizeof(name), "*%i", i);
6197                         mod = Mod_FindName(name, loadmodel->name);
6198                         // copy the base model to this one
6199                         *mod = *loadmodel;
6200                         // rename the clone back to its proper name
6201                         strlcpy(mod->name, name, sizeof(mod->name));
6202                         mod->brush.parentmodel = loadmodel;
6203                         // textures and memory belong to the main model
6204                         mod->texturepool = NULL;
6205                         mod->mempool = NULL;
6206                         mod->brush.GetPVS = NULL;
6207                         mod->brush.FatPVS = NULL;
6208                         mod->brush.BoxTouchingPVS = NULL;
6209                         mod->brush.BoxTouchingLeafPVS = NULL;
6210                         mod->brush.BoxTouchingVisibleLeafs = NULL;
6211                         mod->brush.FindBoxClusters = NULL;
6212                         mod->brush.LightPoint = NULL;
6213                         mod->brush.AmbientSoundLevelsForPoint = NULL;
6214                 }
6215                 mod->brush.submodel = i;
6216                 if (loadmodel->brush.submodels)
6217                         loadmodel->brush.submodels[i] = mod;
6218
6219                 // make the model surface list (used by shadowing/lighting)
6220                 mod->firstmodelsurface = mod->brushq3.data_models[i].firstface;
6221                 mod->nummodelsurfaces = mod->brushq3.data_models[i].numfaces;
6222                 mod->firstmodelbrush = mod->brushq3.data_models[i].firstbrush;
6223                 mod->nummodelbrushes = mod->brushq3.data_models[i].numbrushes;
6224                 mod->sortedmodelsurfaces = (int *)Mem_Alloc(loadmodel->mempool, mod->nummodelsurfaces * sizeof(*mod->sortedmodelsurfaces));
6225                 Mod_MakeSortedSurfaces(mod);
6226
6227                 VectorCopy(mod->brushq3.data_models[i].mins, mod->normalmins);
6228                 VectorCopy(mod->brushq3.data_models[i].maxs, mod->normalmaxs);
6229                 // enlarge the bounding box to enclose all geometry of this model,
6230                 // because q3map2 sometimes lies (mostly to affect the lightgrid),
6231                 // which can in turn mess up the farclip (as well as culling when
6232                 // outside the level - an unimportant concern)
6233
6234                 //printf("Editing model %d... BEFORE re-bounding: %f %f %f - %f %f %f\n", i, mod->normalmins[0], mod->normalmins[1], mod->normalmins[2], mod->normalmaxs[0], mod->normalmaxs[1], mod->normalmaxs[2]);
6235                 for (j = 0;j < mod->nummodelsurfaces;j++)
6236                 {
6237                         const msurface_t *surface = mod->data_surfaces + j + mod->firstmodelsurface;
6238                         const float *v = mod->surfmesh.data_vertex3f + 3 * surface->num_firstvertex;
6239                         int k;
6240                         if (!surface->num_vertices)
6241                                 continue;
6242                         for (k = 0;k < surface->num_vertices;k++, v += 3)
6243                         {
6244                                 mod->normalmins[0] = min(mod->normalmins[0], v[0]);
6245                                 mod->normalmins[1] = min(mod->normalmins[1], v[1]);
6246                                 mod->normalmins[2] = min(mod->normalmins[2], v[2]);
6247                                 mod->normalmaxs[0] = max(mod->normalmaxs[0], v[0]);
6248                                 mod->normalmaxs[1] = max(mod->normalmaxs[1], v[1]);
6249                                 mod->normalmaxs[2] = max(mod->normalmaxs[2], v[2]);
6250                         }
6251                 }
6252                 //printf("Editing model %d... AFTER re-bounding: %f %f %f - %f %f %f\n", i, mod->normalmins[0], mod->normalmins[1], mod->normalmins[2], mod->normalmaxs[0], mod->normalmaxs[1], mod->normalmaxs[2]);
6253                 corner[0] = max(fabs(mod->normalmins[0]), fabs(mod->normalmaxs[0]));
6254                 corner[1] = max(fabs(mod->normalmins[1]), fabs(mod->normalmaxs[1]));
6255                 corner[2] = max(fabs(mod->normalmins[2]), fabs(mod->normalmaxs[2]));
6256                 modelradius = sqrt(corner[0]*corner[0]+corner[1]*corner[1]+corner[2]*corner[2]);
6257                 yawradius = sqrt(corner[0]*corner[0]+corner[1]*corner[1]);
6258                 mod->rotatedmins[0] = mod->rotatedmins[1] = mod->rotatedmins[2] = -modelradius;
6259                 mod->rotatedmaxs[0] = mod->rotatedmaxs[1] = mod->rotatedmaxs[2] = modelradius;
6260                 mod->yawmaxs[0] = mod->yawmaxs[1] = yawradius;
6261                 mod->yawmins[0] = mod->yawmins[1] = -yawradius;
6262                 mod->yawmins[2] = mod->normalmins[2];
6263                 mod->yawmaxs[2] = mod->normalmaxs[2];
6264                 mod->radius = modelradius;
6265                 mod->radius2 = modelradius * modelradius;
6266
6267                 // this gets altered below if sky or water is used
6268                 mod->DrawSky = NULL;
6269                 mod->DrawAddWaterPlanes = NULL;
6270
6271                 for (j = 0;j < mod->nummodelsurfaces;j++)
6272                         if (mod->data_surfaces[j + mod->firstmodelsurface].texture->basematerialflags & MATERIALFLAG_SKY)
6273                                 break;
6274                 if (j < mod->nummodelsurfaces)
6275                         mod->DrawSky = R_Q1BSP_DrawSky;
6276
6277                 for (j = 0;j < mod->nummodelsurfaces;j++)
6278                         if (mod->data_surfaces[j + mod->firstmodelsurface].texture->basematerialflags & (MATERIALFLAG_WATERSHADER | MATERIALFLAG_REFRACTION | MATERIALFLAG_REFLECTION))
6279                                 break;
6280                 if (j < mod->nummodelsurfaces)
6281                         mod->DrawAddWaterPlanes = R_Q1BSP_DrawAddWaterPlanes;
6282         }
6283
6284         Con_DPrintf("Stats for q3bsp model \"%s\": %i faces, %i nodes, %i leafs, %i clusters, %i clusterportals, mesh: %i vertices, %i triangles, %i surfaces\n", loadmodel->name, loadmodel->num_surfaces, loadmodel->brush.num_nodes, loadmodel->brush.num_leafs, mod->brush.num_pvsclusters, loadmodel->brush.num_portals, loadmodel->surfmesh.num_vertices, loadmodel->surfmesh.num_triangles, loadmodel->num_surfaces);
6285 }
6286
6287 void Mod_IBSP_Load(dp_model_t *mod, void *buffer, void *bufferend)
6288 {
6289         int i = LittleLong(((int *)buffer)[1]);
6290         if (i == Q3BSPVERSION || i == Q3BSPVERSION_IG || i == Q3BSPVERSION_LIVE)
6291                 Mod_Q3BSP_Load(mod,buffer, bufferend);
6292         else if (i == Q2BSPVERSION)
6293                 Mod_Q2BSP_Load(mod,buffer, bufferend);
6294         else
6295                 Host_Error("Mod_IBSP_Load: unknown/unsupported version %i", i);
6296 }
6297
6298 void Mod_MAP_Load(dp_model_t *mod, void *buffer, void *bufferend)
6299 {
6300         Host_Error("Mod_MAP_Load: not yet implemented");
6301 }
6302
6303 #ifdef OBJWORKS
6304 typedef struct objvertex_s
6305 {
6306         float v[3];
6307         float vt[2];
6308         float vn[3];
6309 }
6310 objvertex_t;
6311
6312 typedef struct objtriangle_s
6313 {
6314         objvertex_t vertex[3];
6315         int textureindex;
6316         // these fields are used only in conversion to surfaces
6317         int axis;
6318         int surfaceindex;
6319         int surfacevertexindex[3];
6320         float edgeplane[3][4];
6321 }
6322 objtriangle_t;
6323
6324 typedef objnode_s
6325 {
6326         struct objnode_s *children[2];
6327         struct objnode_s *parent;
6328         objtriangle_t *triangles;
6329         float normal[3];
6330         float dist;
6331         float mins[3];
6332         float maxs[3];
6333         int numtriangles;
6334 }
6335 objnode_t;
6336
6337 objnode_t *Mod_OBJ_BSPNodeForTriangles(objnode_t *parent, objtriangle_t *triangles, int numtriangles, const float *mins, const float *maxs, mem_expandablearray_t *nodesarray, int maxclippedtriangles, objtriangle_t *clippedfronttriangles, objtriangle_t *clippedbacktriangles)
6338 {
6339         int i, j;
6340         float normal[3];
6341         float dist;
6342         int score;
6343         float bestnormal[3];
6344         float bestdist;
6345         int bestscore;
6346         float mins[3];
6347         float maxs[3];
6348         int numfronttriangles;
6349         int numbacktriangles;
6350         int count_front;
6351         int count_back;
6352         int count_both;
6353         int count_on;
6354         float outfrontpoints[5][3];
6355         float outbackpoints[5][3];
6356         int neededfrontpoints;
6357         int neededbackpoints;
6358         int countonpoints;
6359         objnode_t *node;
6360
6361         node = (objnode_t *)Mem_ExpandableArray_AllocRecord(array);
6362         node->parent = parent;
6363         if (numtriangles)
6364         {
6365                 VectorCopy(triangles[0].vertex[0].v, mins);
6366                 VectorCopy(triangles[0].vertex[0].v, maxs);
6367         }
6368         else if (parent && parent->children[0] == node)
6369         {
6370                 VectorCopy(parent->mins, mins);
6371                 Vectorcopy(parent->maxs, maxs);
6372         }
6373         else if (parent && parent->children[1] == node)
6374         {
6375                 VectorCopy(parent->mins, mins);
6376                 Vectorcopy(parent->maxs, maxs);
6377         }
6378         else
6379         {
6380                 VectorClear(mins);
6381                 VectorClear(maxs);
6382         }
6383         for (i = 0;i < numtriangles;i++)
6384         {
6385                 for (j = 0;j < 3;j++)
6386                 {
6387                         mins[0] = min(mins[0], triangles[i].vertex[j].v[0]);
6388                         mins[1] = min(mins[1], triangles[i].vertex[j].v[1]);
6389                         mins[2] = min(mins[2], triangles[i].vertex[j].v[2]);
6390                         maxs[0] = max(maxs[0], triangles[i].vertex[j].v[0]);
6391                         maxs[1] = max(maxs[1], triangles[i].vertex[j].v[1]);
6392                         maxs[2] = max(maxs[2], triangles[i].vertex[j].v[2]);
6393                 }
6394         }
6395         VectorCopy(mins, node->mins);
6396         VectorCopy(maxs, node->maxs);
6397         if (numtriangles <= mod_obj_leaftriangles.integer)
6398         {
6399                 // create a leaf
6400                 loadmodel->brush.num_leafs++;
6401                 node->triangles = triangles;
6402                 node->numtriangles = numtriangles;
6403                 return node;
6404         }
6405
6406         // create a node
6407         loadmodel->brush.num_nodes++;
6408         // pick a splitting plane from the various choices available to us...
6409         // early splits simply halve the interval
6410         bestscore = 0;
6411         VectorClear(bestnormal);
6412         bestdist = 0;
6413         if (numtriangles <= mod_obj_splitterlimit.integer)
6414                 limit = numtriangles;
6415         else
6416                 limit = 0;
6417         for (i = -3;i < limit;i++)
6418         {
6419                 if (i < 0)
6420                 {
6421                         // first we try 3 axial splits (kdtree-like)
6422                         j = i + 3;
6423                         VectorClear(normal);
6424                         normal[j] = 1;
6425                         dist = (mins[j] + maxs[j]) * 0.5f;
6426                 }
6427                 else
6428                 {
6429                         // then we try each triangle plane
6430                         TriangleNormal(triangles[i].vertex[0].v, triangles[i].vertex[1].v, triangles[i].vertex[2].v, normal);
6431                         VectorNormalize(normal);
6432                         dist = DotProduct(normal, triangles[i].vertex[0].v);
6433                         // use positive axial values whenever possible
6434                         if (normal[0] == -1)
6435                                 normal[0] = 1;
6436                         if (normal[1] == -1)
6437                                 normal[1] = 1;
6438                         if (normal[2] == -1)
6439                                 normal[2] = 1;
6440                         // skip planes that match the current best
6441                         if (VectorCompare(normal, bestnormal) && dist == bestdist)
6442                                 continue;
6443                 }
6444                 count_on = 0;
6445                 count_front = 0;
6446                 count_back = 0;
6447                 count_both = 0;
6448                 for (j = 0;j < numtriangles;j++)
6449                 {
6450                         dists[0] = DotProduct(normal, triangles[j].vertex[0].v) - dist;
6451                         dists[1] = DotProduct(normal, triangles[j].vertex[1].v) - dist;
6452                         dists[2] = DotProduct(normal, triangles[j].vertex[2].v) - dist;
6453                         if (dists[0] < -DIST_EPSILON || dists[1] < -DIST_EPSILON || dists[2] < -DIST_EPSILON)
6454                         {
6455                                 if (dists[0] > DIST_EPSILON || dists[1] > DIST_EPSILON || dists[2] > DIST_EPSILON)
6456                                         count_both++;
6457                                 else
6458                                         count_back++;
6459                         }
6460                         else if (dists[0] > DIST_EPSILON || dists[1] > DIST_EPSILON || dists[2] > DIST_EPSILON)
6461                                 count_front++;
6462                         else
6463                                 count_on++;
6464                 }
6465                 // score is supposed to:
6466                 // prefer axial splits
6467                 // prefer evenly dividing the input triangles
6468                 // prefer triangles on the plane
6469                 // avoid triangles crossing the plane
6470                 score = count_on*count_on - count_both*count_both + min(count_front, count_back)*(count_front+count_back);
6471                 if (normal[0] == 1 || normal[1] == 1 || normal[2] == 1)
6472                         score *= 2;
6473                 if (i == -3 || bestscore < score)
6474                 {
6475                         VectorCopy(normal, bestnormal);
6476                         bestdist = dist;
6477                         bestscore = score;
6478                 }
6479         }
6480
6481         // now we have chosen an optimal split plane...
6482
6483         // divide triangles by the splitting plane
6484         numfronttriangles = 0;
6485         numbacktriangles = 0;
6486         for (i = 0;i < numtriangles;i++)
6487         {
6488                 neededfrontpoints = 0;
6489                 neededbackpoints = 0;
6490                 countonpoints = 0;
6491                 PolygonF_Divide(3, triangles[i].vertex[0].v, bestnormal[0], bestnormal[1], bestnormal[2], bestdist, DIST_EPSILON, 5, outfrontpoints[0], &neededfrontpoints, 5, outbackpoints[0], &neededbackpoints, &countonpoints);
6492                 if (countonpoints > 1)
6493                 {
6494                         // triangle lies on plane, assign it to one child only
6495                         TriangleNormal(triangles[i].vertex[0].v, triangles[i].vertex[1].v, triangles[i].vertex[2].v, normal);
6496                         if (DotProduct(bestnormal, normal) >= 0)
6497                         {
6498                                 // assign to front side child
6499                                 obj_fronttriangles[numfronttriangles++] = triangles[i];
6500                         }
6501                         else
6502                         {
6503                                 // assign to back side child
6504                                 obj_backtriangles[numbacktriangles++] = triangles[i];
6505                         }
6506                 }
6507                 else
6508                 {
6509                         // convert clipped polygons to triangles
6510                         for (j = 0;j < neededfrontpoints-2;j++)
6511                         {
6512                                 obj_fronttriangles[numfronttriangles] = triangles[i];
6513                                 VectorCopy(outfrontpoints[0], obj_fronttriangles[numfronttriangles].vertex[0].v);
6514                                 VectorCopy(outfrontpoints[j+1], obj_fronttriangles[numfronttriangles].vertex[1].v);
6515                                 VectorCopy(outfrontpoints[j+2], obj_fronttriangles[numfronttriangles].vertex[2].v);
6516                                 numfronttriangles++;
6517                         }
6518                         for (j = 0;j < neededbackpoints-2;j++)
6519                         {
6520                                 obj_backtriangles[numbacktriangles] = triangles[i];
6521                                 VectorCopy(outbackpoints[0], obj_backtriangles[numbacktriangles].vertex[0].v);
6522                                 VectorCopy(outbackpoints[j+1], obj_backtriangles[numbacktriangles].vertex[1].v);
6523                                 VectorCopy(outbackpoints[j+2], obj_backtriangles[numbacktriangles].vertex[2].v);
6524                                 numbacktriangles++;
6525                         }
6526                 }
6527         }
6528
6529         // now copy the triangles out of the big buffer
6530         if (numfronttriangles)
6531         {
6532                 fronttriangles = Mem_Alloc(loadmodel->mempool, fronttriangles * sizeof(*fronttriangles));
6533                 memcpy(fronttriangles, obj_fronttriangles, numfronttriangles * sizeof(*fronttriangles));
6534         }
6535         else
6536                 fronttriangles = NULL;
6537         if (numbacktriangles)
6538         {
6539                 backtriangles = Mem_Alloc(loadmodel->mempool, backtriangles * sizeof(*backtriangles));
6540                 memcpy(backtriangles, obj_backtriangles, numbacktriangles * sizeof(*backtriangles));
6541         }
6542         else
6543                 backtriangles = NULL;
6544
6545         // free the original triangles we were given
6546         if (triangles)
6547                 Mem_Free(triangles);
6548         triangles = NULL;
6549         numtriangles = 0;
6550
6551         // now create the children...
6552         node->children[0] = Mod_OBJ_BSPNodeForTriangles(node, fronttriangles, numfronttriangles, frontmins, frontmaxs, nodesarray, maxclippedtriangles, clippedfronttriangles, clippedbacktriangles);
6553         node->children[1] = Mod_OBJ_BSPNodeForTriangles(node, backtriangles, numbacktriangles, backmins, backmaxs, nodesarray, maxclippedtriangles, clippedfronttriangles, clippedbacktriangles);
6554         return node;
6555 }
6556
6557 void Mod_OBJ_SnapVertex(float *v)
6558 {
6559         int i;
6560         float a = mod_obj_vertexprecision.value;
6561         float b = 1.0f / a;
6562         v[0] -= floor(v[0] * a + 0.5f) * b;
6563         v[1] -= floor(v[1] * a + 0.5f) * b;
6564         v[2] -= floor(v[2] * a + 0.5f) * b;
6565 }
6566
6567 void Mod_OBJ_ConvertBSPNode(objnode_t *objnode, mnode_t *mnodeparent)
6568 {
6569         if (objnode->children[0])
6570         {
6571                 // convert to mnode_t
6572                 mnode_t *mnode = loadmodel->brush.data_nodes + loadmodel->brush.num_nodes++;
6573                 mnode->parent = mnodeparent;
6574                 mnode->plane = loadmodel->brush.data_planes + loadmodel->brush.num_planes++;
6575                 VectorCopy(objnode->normal, mnode->plane->normal);
6576                 mnode->plane->dist = objnode->dist;
6577                 PlaneClassify(mnode->plane);
6578                 VectorCopy(objnode->mins, mnode->mins);
6579                 VectorCopy(objnode->maxs, mnode->maxs);
6580                 // push combinedsupercontents up to the parent
6581                 if (mnodeparent)
6582                         mnodeparent->combinedsupercontents |= mnode->combinedsupercontents;
6583                 mnode->children[0] = Mod_OBJ_ConvertBSPNode(objnode->children[0], mnode);
6584                 mnode->children[1] = Mod_OBJ_ConvertBSPNode(objnode->children[1], mnode);
6585         }
6586         else
6587         {
6588                 // convert to mleaf_t
6589                 mleaf_t *mleaf = loadmodel->brush.data_leafs + loadmodel->brush.num_leafs++;
6590                 mleaf->parent = mnodeparent;
6591                 VectorCopy(objnode->mins, mleaf->mins);
6592                 VectorCopy(objnode->maxs, mleaf->maxs);
6593                 mleaf->clusterindex = loadmodel->brush.num_leafs - 1;
6594                 if (objnode->numtriangles)
6595                 {
6596                         objtriangle_t *triangles = objnode->triangles;
6597                         int numtriangles = objnode->numtriangles;
6598                         texture_t *texture;
6599                         float edge[3][3];
6600                         float normal[3];
6601                         objvertex_t vertex[3];
6602                         numsurfaces = 0;
6603                         maxsurfaces = numtriangles;
6604                         surfaces = NULL;
6605                         // calculate some more data on each triangle for surface gathering
6606                         for (i = 0;i < numtriangles;i++)
6607                         {
6608                                 triangle = triangles + i;
6609                                 texture = loadmodel->data_textures + triangle->textureindex;
6610                                 Mod_OBJ_SnapVertex(triangle->vertex[0].v);
6611                                 Mod_OBJ_SnapVertex(triangle->vertex[1].v);
6612                                 Mod_OBJ_SnapVertex(triangle->vertex[2].v);
6613                                 TriangleNormal(triangle->vertex[0].v, triangle->vertex[1].v, triangle->vertex[2].v, normal);
6614                                 axis = 0;
6615                                 if (fabs(normal[axis]) < fabs(normal[1]))
6616                                         axis = 1;
6617                                 if (fabs(normal[axis]) < fabs(normal[2]))
6618                                         axis = 2;
6619                                 VectorClear(normal);
6620                                 normal[axis] = 1;
6621                                 triangle->axis = axis;
6622                                 VectorSubtract(triangle->vertex[1].v, triangle->vertex[0].v, edge[0]);
6623                                 VectorSubtract(triangle->vertex[2].v, triangle->vertex[1].v, edge[1]);
6624                                 VectorSubtract(triangle->vertex[0].v, triangle->vertex[2].v, edge[2]);
6625                                 CrossProduct(edge[0], normal, triangle->edgeplane[0]);
6626                                 CrossProduct(edge[1], normal, triangle->edgeplane[1]);
6627                                 CrossProduct(edge[2], normal, triangle->edgeplane[2]);
6628                                 VectorNormalize(triangle->edgeplane[0]);
6629                                 VectorNormalize(triangle->edgeplane[1]);
6630                                 VectorNormalize(triangle->edgeplane[2]);
6631                                 triangle->edgeplane[0][3] = DotProduct(triangle->edgeplane[0], triangle->vertex[0].v);
6632                                 triangle->edgeplane[1][3] = DotProduct(triangle->edgeplane[1], triangle->vertex[1].v);
6633                                 triangle->edgeplane[2][3] = DotProduct(triangle->edgeplane[2], triangle->vertex[2].v);
6634                                 triangle->surfaceindex = 0;
6635                                 // add to the combined supercontents while we're here...
6636                                 mleaf->combinedsupercontents |= texture->supercontents;
6637                         }
6638                         surfaceindex = 1;
6639                         for (i = 0;i < numtriangles;i++)
6640                         {
6641                                 // skip already-assigned triangles
6642                                 if (triangles[i].surfaceindex)
6643                                         continue;
6644                                 texture = loadmodel->data_textures + triangles[i].textureindex;
6645                                 // assign a new surface to this triangle
6646                                 triangles[i].surfaceindex = surfaceindex++;
6647                                 axis = triangles[i].axis;
6648                                 numvertices = 3;
6649                                 // find the triangle's neighbors, this can take multiple passes
6650                                 retry = true;
6651                                 while (retry)
6652                                 {
6653                                         retry = false;
6654                                         for (j = i+1;j < numtriangles;j++)
6655                                         {
6656                                                 if (triangles[j].surfaceindex || triangles[j].axis != axis || triangles[j].texture != texture)
6657                                                         continue;
6658                                                 triangle = triangles + j;
6659                                                 for (k = i;k < j;k++)
6660                                                 {
6661                                                         if (triangles[k].surfaceindex != surfaceindex)
6662                                                                 continue;
6663                                                         if (VectorCompare(triangles[k].vertex[0].v, triangles[j].vertex[0].v)
6664                                                          || VectorCompare(triangles[k].vertex[0].v, triangles[j].vertex[1].v)
6665                                                          || VectorCompare(triangles[k].vertex[0].v, triangles[j].vertex[2].v)
6666                                                          || VectorCompare(triangles[k].vertex[1].v, triangles[j].vertex[0].v)
6667                                                          || VectorCompare(triangles[k].vertex[1].v, triangles[j].vertex[1].v)
6668                                                          || VectorCompare(triangles[k].vertex[1].v, triangles[j].vertex[2].v)
6669                                                          || VectorCompare(triangles[k].vertex[2].v, triangles[j].vertex[0].v)
6670                                                          || VectorCompare(triangles[k].vertex[2].v, triangles[j].vertex[1].v)
6671                                                          || VectorCompare(triangles[k].vertex[2].v, triangles[j].vertex[2].v))
6672                                                         {
6673                                                                 // shares a vertex position
6674                                                                 --- FIXME ---
6675                                                         }
6676                                                 }
6677                                                 for (k = 0;k < numvertices;k++)
6678                                                         if (!VectorCompare(vertex[k].v, triangles[j].vertex[0].v) || !VectorCompare(vertex[k].v, triangles[j].vertex[1].v) || !VectorCompare(vertex[k].v, triangles[j].vertex[2].v))
6679                                                                 break;
6680                                                 if (k == numvertices)
6681                                                         break; // not a neighbor
6682                                                 // this triangle is a neighbor and has the same axis and texture
6683                                                 // check now if it overlaps in lightmap projection space
6684                                                 triangles[j].surfaceindex;
6685                                                 if (triangles[j].
6686                                         }
6687                                 }
6688                                 //triangles[i].surfaceindex = surfaceindex++;
6689                                 for (surfaceindex = 0;surfaceindex < numsurfaces;surfaceindex++)
6690                                 {
6691                                         if (surfaces[surfaceindex].texture != texture)
6692                                                 continue;
6693                                         // check if any triangles already in this surface overlap in lightmap projection space
6694
6695                                         {
6696                                         }
6697                                         break;
6698                                 }
6699                         }
6700                         // let the collision code simply use the surfaces
6701                         mleaf->containscollisionsurfaces = mleaf->combinedsupercontents != 0;
6702                         mleaf->numleafsurfaces = ?;
6703                         mleaf->firstleafsurface = ?;
6704                 }
6705                 // push combinedsupercontents up to the parent
6706                 if (mnodeparent)
6707                         mnodeparent->combinedsupercontents |= mleaf->combinedsupercontents;
6708         }
6709 }
6710 #endif
6711
6712 void Mod_OBJ_Load(dp_model_t *mod, void *buffer, void *bufferend)
6713 {
6714 #ifdef OBJWORKS
6715         const char *textbase = (char *)buffer, *text = textbase;
6716         char *s;
6717         char *argv[512];
6718         char line[1024];
6719         char materialname[MAX_QPATH];
6720         int j, index1, index2, index3, first, prev, index;
6721         int argc;
6722         int linelen;
6723         int numtriangles = 0;
6724         int maxtriangles = 131072;
6725         objtriangle_t *triangles = Mem_Alloc(tempmempool, maxtriangles * sizeof(*triangles));
6726         int linenumber = 0;
6727         int maxtextures = 256, numtextures = 0, textureindex = 0;
6728         int maxv = 1024, numv = 0;
6729         int maxvt = 1024, numvt = 0;
6730         int maxvn = 1024, numvn = 0;
6731         char **texturenames;
6732         float *v = Mem_Alloc(tempmempool, maxv * sizeof(float[3]));
6733         float *vt = Mem_Alloc(tempmempool, maxvt * sizeof(float[2]));
6734         float *vn = Mem_Alloc(tempmempool, maxvn * sizeof(float[3]));
6735         objvertex_t vfirst, vprev, vcurrent;
6736         float mins[3];
6737         float maxs[3];
6738 #if 0
6739         int hashindex;
6740         int maxverthash = 65536, numverthash = 0;
6741         int numhashindex = 65536;
6742         struct objverthash_s
6743         {
6744                 struct objverthash_s *next;
6745                 int s;
6746                 int v;
6747                 int vt;
6748                 int vn;
6749         }
6750         *hash, **verthash = Mem_Alloc(tempmempool, numhashindex * sizeof(*verthash)), *verthashdata = Mem_Alloc(tempmempool, maxverthash * sizeof(*verthashdata)), *oldverthashdata;
6751 #endif
6752
6753         dpsnprintf(materialname, sizeof(materialname), "%s", loadmodel->name);
6754
6755         loadmodel->modeldatatypestring = "OBJ";
6756
6757         loadmodel->type = mod_obj;
6758         loadmodel->soundfromcenter = true;
6759         loadmodel->TraceBox = Mod_OBJ_TraceBox;
6760         loadmodel->TraceLine = Mod_OBJ_TraceLine;
6761         loadmodel->TracePoint = Mod_OBJ_TracePoint;
6762         loadmodel->PointSuperContents = Mod_OBJ_PointSuperContents;
6763         loadmodel->brush.TraceLineOfSight = Mod_OBJ_TraceLineOfSight;
6764         loadmodel->brush.SuperContentsFromNativeContents = Mod_OBJ_SuperContentsFromNativeContents;
6765         loadmodel->brush.NativeContentsFromSuperContents = Mod_OBJ_NativeContentsFromSuperContents;
6766         loadmodel->brush.GetPVS = Mod_OBJ_GetPVS;
6767         loadmodel->brush.FatPVS = Mod_OBJ_FatPVS;
6768         loadmodel->brush.BoxTouchingPVS = Mod_OBJ_BoxTouchingPVS;
6769         loadmodel->brush.BoxTouchingLeafPVS = Mod_OBJ_BoxTouchingLeafPVS;
6770         loadmodel->brush.BoxTouchingVisibleLeafs = Mod_OBJ_BoxTouchingVisibleLeafs;
6771         loadmodel->brush.FindBoxClusters = Mod_OBJ_FindBoxClusters;
6772         loadmodel->brush.LightPoint = Mod_OBJ_LightPoint;
6773         loadmodel->brush.FindNonSolidLocation = Mod_OBJ_FindNonSolidLocation;
6774         loadmodel->brush.AmbientSoundLevelsForPoint = NULL;
6775         loadmodel->brush.RoundUpToHullSize = NULL;
6776         loadmodel->brush.PointInLeaf = Mod_OBJ_PointInLeaf;
6777         loadmodel->Draw = R_Q1BSP_Draw;
6778         loadmodel->DrawDepth = R_Q1BSP_DrawDepth;
6779         loadmodel->DrawDebug = R_Q1BSP_DrawDebug;
6780         loadmodel->DrawPrepass = R_Q1BSP_DrawPrepass;
6781         loadmodel->GetLightInfo = R_Q1BSP_GetLightInfo;
6782         loadmodel->CompileShadowMap = R_Q1BSP_CompileShadowMap;
6783         loadmodel->DrawShadowMap = R_Q1BSP_DrawShadowMap;
6784         loadmodel->CompileShadowVolume = R_Q1BSP_CompileShadowVolume;
6785         loadmodel->DrawShadowVolume = R_Q1BSP_DrawShadowVolume;
6786         loadmodel->DrawLight = R_Q1BSP_DrawLight;
6787
6788         VectorClear(mins);
6789         VectorClear(maxs);
6790
6791         // parse the OBJ text now
6792         for(;;)
6793         {
6794                 if (!*text)
6795                         break;
6796                 linenumber++;
6797                 linelen = 0;
6798                 for (linelen = 0;text[linelen] && text[linelen] != '\r' && text[linelen] != '\n';linelen++)
6799                         line[linelen] = text[linelen];
6800                 line[linelen] = 0;
6801                 for (argc = 0;argc < (int)(sizeof(argv)/sizeof(argv[0]));argc++)
6802                         argv[argc] = "";
6803                 argc = 0;
6804                 s = line;
6805                 while (*s == ' ' || *s == '\t')
6806                         s++;
6807                 while (*s)
6808                 {
6809                         argv[argc++] = s;
6810                         while (*s > ' ')
6811                                 s++;
6812                         if (!*s)
6813                                 break;
6814                         *s++ = 0;
6815                         while (*s == ' ' || *s == '\t')
6816                                 s++;
6817                 }
6818                 if (!argc)
6819                         continue;
6820                 if (argv[0][0] == '#')
6821                         continue;
6822                 if (!strcmp(argv[0], "v"))
6823                 {
6824                         if (maxv <= numv)
6825                         {
6826                                 float *oldv = v;
6827                                 maxv *= 2;
6828                                 v = Mem_Alloc(tempmempool, maxv * sizeof(float[3]));
6829                                 if (oldv)
6830                                 {
6831                                         memcpy(v, oldv, numv * sizeof(float[3]));
6832                                         Mem_Free(oldv);
6833                                 }
6834                         }
6835                         v[numv*3+0] = atof(argv[1]);
6836                         v[numv*3+1] = atof(argv[2]);
6837                         v[numv*3+2] = atof(argv[3]);
6838                         numv++;
6839                 }
6840                 else if (!strcmp(argv[0], "vt"))
6841                 {
6842                         if (maxvt <= numvt)
6843                         {
6844                                 float *oldvt = vt;
6845                                 maxvt *= 2;
6846                                 vt = Mem_Alloc(tempmempool, maxvt * sizeof(float[2]));
6847                                 if (oldvt)
6848                                 {
6849                                         memcpy(vt, oldvt, numvt * sizeof(float[2]));
6850                                         Mem_Free(oldvt);
6851                                 }
6852                         }
6853                         vt[numvt*2+0] = atof(argv[1]);
6854                         vt[numvt*2+1] = atof(argv[2]);
6855                         numvt++;
6856                 }
6857                 else if (!strcmp(argv[0], "vn"))
6858                 {
6859                         if (maxvn <= numvn)
6860                         {
6861                                 float *oldvn = vn;
6862                                 maxvn *= 2;
6863                                 vn = Mem_Alloc(tempmempool, maxvn * sizeof(float[3]));
6864                                 if (oldvn)
6865                                 {
6866                                         memcpy(vn, oldvn, numvn * sizeof(float[3]));
6867                                         Mem_Free(oldvn);
6868                                 }
6869                         }
6870                         vn[numvn*3+0] = atof(argv[1]);
6871                         vn[numvn*3+1] = atof(argv[2]);
6872                         vn[numvn*3+2] = atof(argv[3]);
6873                         numvn++;
6874                 }
6875                 else if (!strcmp(argv[0], "f"))
6876                 {
6877                         for (j = 1;j < argc;j++)
6878                         {
6879                                 index1 = atoi(argv[j]);
6880                                 while(argv[j][0] && argv[j][0] != '/')
6881                                         argv[j]++;
6882                                 if (argv[j][0])
6883                                         argv[j]++;
6884                                 index2 = atoi(argv[j]);
6885                                 while(argv[j][0] && argv[j][0] != '/')
6886                                         argv[j]++;
6887                                 if (argv[j][0])
6888                                         argv[j]++;
6889                                 index3 = atoi(argv[j]);
6890                                 // negative refers to a recent vertex
6891                                 // zero means not specified
6892                                 // positive means an absolute vertex index
6893                                 if (index1 < 0)
6894                                         index1 = numv - index1;
6895                                 if (index2 < 0)
6896                                         index2 = numvt - index2;
6897                                 if (index3 < 0)
6898                                         index3 = numvn - index3;
6899                                 VectorCopy(v + 3*index1, vcurrent.v);
6900                                 Vector2Copy(vt + 2*index2, vcurrent.vt);
6901                                 VectorCopy(vn + 3*index3, vcurrent.vn);
6902                                 if (numtriangles == 0)
6903                                 {
6904                                         VectorCopy(vcurrent.v, mins);
6905                                         VectorCopy(vcurrent.v, maxs);
6906                                 }
6907                                 else
6908                                 {
6909                                         mins[0] = min(mins[0], vcurrent.v[0]);
6910                                         mins[1] = min(mins[1], vcurrent.v[1]);
6911                                         mins[2] = min(mins[2], vcurrent.v[2]);
6912                                         maxs[0] = max(maxs[0], vcurrent.v[0]);
6913                                         maxs[1] = max(maxs[1], vcurrent.v[1]);
6914                                         maxs[2] = max(maxs[2], vcurrent.v[2]);
6915                                 }
6916                                 if (j == 1)
6917                                         vfirst = vcurrent;
6918                                 else if (j >= 3)
6919                                 {
6920                                         if (maxtriangles <= numtriangles)
6921                                         {
6922                                                 objtriangle_t *oldtriangles = triangles;
6923                                                 maxtriangles *= 2;
6924                                                 triangles = Mem_Alloc(tempmempool, numtriangles * sizeof(*triangles));
6925                                                 if (oldtriangles)
6926                                                 {
6927                                                         memcpy(triangles, oldtriangles, numtriangles * sizeof(*triangles));
6928                                                         Mem_Free(oldtriangles);
6929                                                 }
6930                                         }
6931                                         triangles[numtriangles].textureindex = textureindex;
6932                                         triangles[numtriangles].vertex[0] = vfirst;
6933                                         triangles[numtriangles].vertex[1] = vprev;
6934                                         triangles[numtriangles].vertex[2] = vcurrent;
6935                                         numtriangles++;
6936                                 }
6937                                 vprev = vcurrent;
6938                                 prev = index;
6939                         }
6940                 }
6941                 else if (!strcmp(argv[0], "o") || !strcmp(argv[0], "g"))
6942                         ;
6943                 else if (!!strcmp(argv[0], "usemtl"))
6944                 {
6945                         for (i = 0;i < numtextures;i++)
6946                                 if (!strcmp(texturenames[numtextures], argv[1]))
6947                                         break;
6948                         if (i < numtextures)
6949                                 texture = textures + i;
6950                         else
6951                         {
6952                                 if (maxtextures <= numtextures)
6953                                 {
6954                                         texture_t *oldtextures = textures;
6955                                         maxtextures *= 2;
6956                                         textures = Mem_Alloc(tempmempool, maxtextures * sizeof(*textures));
6957                                         if (oldtextures)
6958                                         {
6959                                                 memcpy(textures, oldtextures, numtexutres * sizeof(*textures));
6960                                                 Mem_Free(oldtextures);
6961                                         }
6962                                 }
6963                                 textureindex = numtextures++;
6964                                 texturenames[textureindex] = Mem_Alloc(tempmempool, strlen(argv[1]) + 1);
6965                                 memcpy(texturenames[textureindex], argv[1], strlen(argv[1]) + 1);
6966                         }
6967                 }
6968                 text += linelen;
6969                 if (*text == '\r')
6970                         text++;
6971                 if (*text == '\n')
6972                         text++;
6973         }
6974
6975         // now that we have the OBJ data loaded as-is, we can convert it
6976
6977         // load the textures
6978         loadmodel->num_textures = numtextures;
6979         loadmodel->data_textures = Mem_Alloc(loadmodel->mempool, loadmodel->num_textures * sizeof(texture_t));
6980         for (i = 0;i < numtextures;i++)
6981                 Mod_LoadTextureFromQ3Shader(loadmodel->data_textures + i, texturenames[i], true, true, TEXF_MIPMAP | TEXF_ALPHA | (r_picmipworld.integer ? TEXF_PICMIP : 0) | TEXF_COMPRESS);
6982
6983         // free the texturenames array since we are now done with it
6984         for (i = 0;i < numtextures;i++)
6985         {
6986                 Mem_Free(texturenames[i]);
6987                 texturenames[i] = NULL;
6988         }
6989         Mem_Free(texturenames);
6990         texturenames = NULL;
6991
6992         // copy the model bounds, then enlarge the yaw and rotated bounds according to radius
6993         VectorCopy(mins, loadmodel->normalmins);
6994         VectorCopy(maxs, loadmodel->normalmaxs);
6995         dist = max(fabs(loadmodel->normalmins[0]), fabs(loadmodel->normalmaxs[0]));
6996         modelyawradius = max(fabs(loadmodel->normalmins[1]), fabs(loadmodel->normalmaxs[1]));
6997         modelyawradius = dist*dist+modelyawradius*modelyawradius;
6998         modelradius = max(fabs(loadmodel->normalmins[2]), fabs(loadmodel->normalmaxs[2]));
6999         modelradius = modelyawradius + modelradius * modelradius;
7000         modelyawradius = sqrt(modelyawradius);
7001         modelradius = sqrt(modelradius);
7002         loadmodel->yawmins[0] = loadmodel->yawmins[1] = -modelyawradius;
7003         loadmodel->yawmins[2] = loadmodel->normalmins[2];
7004         loadmodel->yawmaxs[0] = loadmodel->yawmaxs[1] =  modelyawradius;
7005         loadmodel->yawmaxs[2] = loadmodel->normalmaxs[2];
7006         loadmodel->rotatedmins[0] = loadmodel->rotatedmins[1] = loadmodel->rotatedmins[2] = -modelradius;
7007         loadmodel->rotatedmaxs[0] = loadmodel->rotatedmaxs[1] = loadmodel->rotatedmaxs[2] =  modelradius;
7008         loadmodel->radius = modelradius;
7009         loadmodel->radius2 = modelradius * modelradius;
7010
7011         // make sure the temp triangle buffer is big enough for BSP building
7012         maxclippedtriangles = numtriangles*4;
7013         if (numtriangles > 0)
7014         {
7015                 clippedfronttriangles = Mem_Alloc(loadmodel->mempool, maxclippedtriangles * 2 * sizeof(objtriangle_t));
7016                 clippedbacktriangles = clippedfronttriangles + maxclippedtriangles;
7017         }
7018
7019         // generate a rough BSP tree from triangle data, we don't have to be too careful here, it only has to define the basic areas of the map
7020         loadmodel->brush.num_leafs = 0;
7021         loadmodel->brush.num_nodes = 0;
7022         Mem_ExpandableArray_NewArray(&nodesarray, loadmodel->mempool, sizeof(objnode_t), 1024);
7023         rootnode = Mod_OBJ_BSPNodeForTriangles(triangles, numtriangles, mins, maxs, &nodesarray, maxclippedtriangles, clippedfronttriangles, clippedbacktriangles);
7024
7025         // convert the BSP tree to mnode_t and mleaf_t structures and convert the triangles to msurface_t...
7026         loadmodel->brush.data_leafs = Mem_Alloc(loadmodel->mempool, loadmodel->brush.num_leafs * sizeof(mleaf_t));
7027         loadmodel->brush.data_nodes = Mem_Alloc(loadmodel->mempool, loadmodel->brush.num_nodes * sizeof(mnode_t));
7028         loadmodel->brush.data_planes = Mem_Alloc(loadmodel->mempool, loadmodel->brush.num_nodes * sizeof(mplane_t));
7029         loadmodel->brush.num_leafs = 0;
7030         loadmodel->brush.num_nodes = 0;
7031         loadmodel->brush.num_planes = 0;
7032         Mod_OBJ_ConvertAndFreeBSPNode(rootnode);
7033
7034         if (clippedfronttriangles)
7035                 Mem_Free(clippedfronttriangles);
7036         maxclippedtriangles = 0;
7037         clippedfronttriangles = NULL;
7038         clippedbacktriangles = NULL;
7039
7040 --- NOTHING DONE PAST THIS POINT ---
7041
7042         loadmodel->numskins = LittleLong(pinmodel->num_skins);
7043         numxyz = LittleLong(pinmodel->num_xyz);
7044         numst = LittleLong(pinmodel->num_st);
7045         loadmodel->surfmesh.num_triangles = LittleLong(pinmodel->num_tris);
7046         loadmodel->numframes = LittleLong(pinmodel->num_frames);
7047         loadmodel->surfmesh.num_morphframes = loadmodel->numframes;
7048         loadmodel->num_poses = loadmodel->surfmesh.num_morphframes;
7049         skinwidth = LittleLong(pinmodel->skinwidth);
7050         skinheight = LittleLong(pinmodel->skinheight);
7051         iskinwidth = 1.0f / skinwidth;
7052         iskinheight = 1.0f / skinheight;
7053
7054         loadmodel->num_surfaces = 1;
7055         loadmodel->nummodelsurfaces = loadmodel->num_surfaces;
7056         data = (unsigned char *)Mem_Alloc(loadmodel->mempool, loadmodel->num_surfaces * sizeof(msurface_t) + loadmodel->num_surfaces * sizeof(int) + loadmodel->numframes * sizeof(animscene_t) + loadmodel->numframes * sizeof(float[6]) + loadmodel->surfmesh.num_triangles * sizeof(int[3]) + loadmodel->surfmesh.num_triangles * sizeof(int[3]));
7057         loadmodel->data_surfaces = (msurface_t *)data;data += loadmodel->num_surfaces * sizeof(msurface_t);
7058         loadmodel->sortedmodelsurfaces = (int *)data;data += loadmodel->num_surfaces * sizeof(int);
7059         loadmodel->sortedmodelsurfaces[0] = 0;
7060         loadmodel->animscenes = (animscene_t *)data;data += loadmodel->numframes * sizeof(animscene_t);
7061         loadmodel->surfmesh.data_morphmd2framesize6f = (float *)data;data += loadmodel->numframes * sizeof(float[6]);
7062         loadmodel->surfmesh.data_element3i = (int *)data;data += loadmodel->surfmesh.num_triangles * sizeof(int[3]);
7063         loadmodel->surfmesh.data_neighbor3i = (int *)data;data += loadmodel->surfmesh.num_triangles * sizeof(int[3]);
7064
7065         loadmodel->synctype = ST_RAND;
7066
7067         // load the skins
7068         inskin = (char *)(base + LittleLong(pinmodel->ofs_skins));
7069         skinfiles = Mod_LoadSkinFiles();
7070         if (skinfiles)
7071         {
7072                 loadmodel->num_textures = loadmodel->num_surfaces * loadmodel->numskins;
7073                 loadmodel->num_texturesperskin = loadmodel->num_surfaces;
7074                 loadmodel->data_textures = (texture_t *)Mem_Alloc(loadmodel->mempool, loadmodel->num_surfaces * loadmodel->numskins * sizeof(texture_t));
7075                 Mod_BuildAliasSkinsFromSkinFiles(loadmodel->data_textures, skinfiles, "default", "");
7076                 Mod_FreeSkinFiles(skinfiles);
7077         }
7078         else if (loadmodel->numskins)
7079         {
7080                 // skins found (most likely not a player model)
7081                 loadmodel->num_textures = loadmodel->num_surfaces * loadmodel->numskins;
7082                 loadmodel->num_texturesperskin = loadmodel->num_surfaces;
7083                 loadmodel->data_textures = (texture_t *)Mem_Alloc(loadmodel->mempool, loadmodel->num_surfaces * loadmodel->numskins * sizeof(texture_t));
7084                 for (i = 0;i < loadmodel->numskins;i++, inskin += MD2_SKINNAME)
7085                         Mod_LoadTextureFromQ3Shader(loadmodel->data_textures + i * loadmodel->num_surfaces, inskin, true, true, (r_mipskins.integer ? TEXF_MIPMAP : 0) | TEXF_ALPHA | TEXF_PICMIP | TEXF_COMPRESS);
7086         }
7087         else
7088         {
7089                 // no skins (most likely a player model)
7090                 loadmodel->numskins = 1;
7091                 loadmodel->num_textures = loadmodel->num_surfaces * loadmodel->numskins;
7092                 loadmodel->num_texturesperskin = loadmodel->num_surfaces;
7093                 loadmodel->data_textures = (texture_t *)Mem_Alloc(loadmodel->mempool, loadmodel->num_surfaces * loadmodel->numskins * sizeof(texture_t));
7094                 Mod_BuildAliasSkinFromSkinFrame(loadmodel->data_textures, NULL);
7095         }
7096
7097         loadmodel->skinscenes = (animscene_t *)Mem_Alloc(loadmodel->mempool, sizeof(animscene_t) * loadmodel->numskins);
7098         for (i = 0;i < loadmodel->numskins;i++)
7099         {
7100                 loadmodel->skinscenes[i].firstframe = i;
7101                 loadmodel->skinscenes[i].framecount = 1;
7102                 loadmodel->skinscenes[i].loop = true;
7103                 loadmodel->skinscenes[i].framerate = 10;
7104         }
7105
7106         // load the triangles and stvert data
7107         inst = (unsigned short *)(base + LittleLong(pinmodel->ofs_st));
7108         intri = (md2triangle_t *)(base + LittleLong(pinmodel->ofs_tris));
7109         md2verthash = (struct md2verthash_s **)Mem_Alloc(tempmempool, 65536 * sizeof(hash));
7110         md2verthashdata = (struct md2verthash_s *)Mem_Alloc(tempmempool, loadmodel->surfmesh.num_triangles * 3 * sizeof(*hash));
7111         // swap the triangle list
7112         loadmodel->surfmesh.num_vertices = 0;
7113         for (i = 0;i < loadmodel->surfmesh.num_triangles;i++)
7114         {
7115                 for (j = 0;j < 3;j++)
7116                 {
7117                         xyz = (unsigned short) LittleShort (intri[i].index_xyz[j]);
7118                         st = (unsigned short) LittleShort (intri[i].index_st[j]);
7119                         if (xyz >= numxyz)
7120                         {
7121                                 Con_Printf("%s has an invalid xyz index (%i) on triangle %i, resetting to 0\n", loadmodel->name, xyz, i);
7122                                 xyz = 0;
7123                         }
7124                         if (st >= numst)
7125                         {
7126                                 Con_Printf("%s has an invalid st index (%i) on triangle %i, resetting to 0\n", loadmodel->name, st, i);
7127                                 st = 0;
7128                         }
7129                         hashindex = (xyz * 256 + st) & 65535;
7130                         for (hash = md2verthash[hashindex];hash;hash = hash->next)
7131                                 if (hash->xyz == xyz && hash->st == st)
7132                                         break;
7133                         if (hash == NULL)
7134                         {
7135                                 hash = md2verthashdata + loadmodel->surfmesh.num_vertices++;
7136                                 hash->xyz = xyz;
7137                                 hash->st = st;
7138                                 hash->next = md2verthash[hashindex];
7139                                 md2verthash[hashindex] = hash;
7140                         }
7141                         loadmodel->surfmesh.data_element3i[i*3+j] = (hash - md2verthashdata);
7142                 }
7143         }
7144
7145         vertremap = (int *)Mem_Alloc(loadmodel->mempool, loadmodel->surfmesh.num_vertices * sizeof(int));
7146         data = (unsigned char *)Mem_Alloc(loadmodel->mempool, loadmodel->surfmesh.num_vertices * sizeof(float[2]) + loadmodel->surfmesh.num_vertices * loadmodel->surfmesh.num_morphframes * sizeof(trivertx_t));
7147         loadmodel->surfmesh.data_texcoordtexture2f = (float *)data;data += loadmodel->surfmesh.num_vertices * sizeof(float[2]);
7148         loadmodel->surfmesh.data_morphmdlvertex = (trivertx_t *)data;data += loadmodel->surfmesh.num_vertices * loadmodel->surfmesh.num_morphframes * sizeof(trivertx_t);
7149         for (i = 0;i < loadmodel->surfmesh.num_vertices;i++)
7150         {
7151                 int sts, stt;
7152                 hash = md2verthashdata + i;
7153                 vertremap[i] = hash->xyz;
7154                 sts = LittleShort(inst[hash->st*2+0]);
7155                 stt = LittleShort(inst[hash->st*2+1]);
7156                 if (sts < 0 || sts >= skinwidth || stt < 0 || stt >= skinheight)
7157                 {
7158                         Con_Printf("%s has an invalid skin coordinate (%i %i) on vert %i, changing to 0 0\n", loadmodel->name, sts, stt, i);
7159                         sts = 0;
7160                         stt = 0;
7161                 }
7162                 loadmodel->surfmesh.data_texcoordtexture2f[i*2+0] = sts * iskinwidth;
7163                 loadmodel->surfmesh.data_texcoordtexture2f[i*2+1] = stt * iskinheight;
7164         }
7165
7166         Mem_Free(md2verthash);
7167         Mem_Free(md2verthashdata);
7168
7169         // generate ushort elements array if possible
7170         if (loadmodel->surfmesh.num_vertices <= 65536)
7171                 loadmodel->surfmesh.data_element3s = (unsigned short *)Mem_Alloc(loadmodel->mempool, sizeof(unsigned short[3]) * loadmodel->surfmesh.num_triangles);
7172
7173         // load the frames
7174         datapointer = (base + LittleLong(pinmodel->ofs_frames));
7175         for (i = 0;i < loadmodel->surfmesh.num_morphframes;i++)
7176         {
7177                 int k;
7178                 trivertx_t *v;
7179                 trivertx_t *out;
7180                 pinframe = (md2frame_t *)datapointer;
7181                 datapointer += sizeof(md2frame_t);
7182                 // store the frame scale/translate into the appropriate array
7183                 for (j = 0;j < 3;j++)
7184                 {
7185                         loadmodel->surfmesh.data_morphmd2framesize6f[i*6+j] = LittleFloat(pinframe->scale[j]);
7186                         loadmodel->surfmesh.data_morphmd2framesize6f[i*6+3+j] = LittleFloat(pinframe->translate[j]);
7187                 }
7188                 // convert the vertices
7189                 v = (trivertx_t *)datapointer;
7190                 out = loadmodel->surfmesh.data_morphmdlvertex + i * loadmodel->surfmesh.num_vertices;
7191                 for (k = 0;k < loadmodel->surfmesh.num_vertices;k++)
7192                         out[k] = v[vertremap[k]];
7193                 datapointer += numxyz * sizeof(trivertx_t);
7194
7195                 strlcpy(loadmodel->animscenes[i].name, pinframe->name, sizeof(loadmodel->animscenes[i].name));
7196                 loadmodel->animscenes[i].firstframe = i;
7197                 loadmodel->animscenes[i].framecount = 1;
7198                 loadmodel->animscenes[i].framerate = 10;
7199                 loadmodel->animscenes[i].loop = true;
7200         }
7201
7202         Mem_Free(vertremap);
7203
7204         Mod_MakeSortedSurfaces(loadmodel);
7205         Mod_BuildTriangleNeighbors(loadmodel->surfmesh.data_neighbor3i, loadmodel->surfmesh.data_element3i, loadmodel->surfmesh.num_triangles);
7206         Mod_Alias_CalculateBoundingBox();
7207         Mod_Alias_MorphMesh_CompileFrames();
7208
7209         surface = loadmodel->data_surfaces;
7210         surface->texture = loadmodel->data_textures;
7211         surface->num_firsttriangle = 0;
7212         surface->num_triangles = loadmodel->surfmesh.num_triangles;
7213         surface->num_firstvertex = 0;
7214         surface->num_vertices = loadmodel->surfmesh.num_vertices;
7215
7216         loadmodel->surfmesh.isanimated = false;
7217
7218         if (loadmodel->surfmesh.data_element3s)
7219                 for (i = 0;i < loadmodel->surfmesh.num_triangles*3;i++)
7220                         loadmodel->surfmesh.data_element3s[i] = loadmodel->surfmesh.data_element3i[i];
7221 #endif
7222 }
7223
7224 qboolean Mod_CanSeeBox_Trace(int numsamples, float t, dp_model_t *model, vec3_t eye, vec3_t minsX, vec3_t maxsX)
7225 {
7226         // we already have done PVS culling at this point...
7227         // so we don't need to do it again.
7228
7229         int i;
7230         vec3_t testorigin, mins, maxs;
7231
7232         testorigin[0] = (minsX[0] + maxsX[0]) * 0.5;
7233         testorigin[1] = (minsX[1] + maxsX[1]) * 0.5;
7234         testorigin[2] = (minsX[2] + maxsX[2]) * 0.5;
7235
7236         if(model->brush.TraceLineOfSight(model, eye, testorigin))
7237                 return 1;
7238
7239         // expand the box a little
7240         mins[0] = (t+1) * minsX[0] - t * maxsX[0];
7241         maxs[0] = (t+1) * maxsX[0] - t * minsX[0];
7242         mins[1] = (t+1) * minsX[1] - t * maxsX[1];
7243         maxs[1] = (t+1) * maxsX[1] - t * minsX[1];
7244         mins[2] = (t+1) * minsX[2] - t * maxsX[2];
7245         maxs[2] = (t+1) * maxsX[2] - t * minsX[2];
7246
7247         for(i = 0; i != numsamples; ++i)
7248         {
7249                 testorigin[0] = lhrandom(mins[0], maxs[0]);
7250                 testorigin[1] = lhrandom(mins[1], maxs[1]);
7251                 testorigin[2] = lhrandom(mins[2], maxs[2]);
7252
7253                 if(model->brush.TraceLineOfSight(model, eye, testorigin))
7254                         return 1;
7255         }
7256
7257         return 0;
7258 }
7259