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 halflifebsp = {0, "halflifebsp", "0", "indicates the current map is hlbsp format (useful to know because of different bounding box sizes)"};
  31 cvar_t r_novis = {0, "r_novis", "0", "draws whole level, see also sv_cullentities_pvs 0"};
  32 cvar_t r_picmipworld = {CVAR_SAVE, "r_picmipworld", "1", "whether gl_picmip shall apply to world textures too"};
  33 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)"};
  34 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)"};
  35 cvar_t r_subdivisions_mintess = {0, "r_subdivisions_mintess", "1", "minimum number of subdivisions (values above 1 will smooth curves that don't need it)"};
  36 cvar_t r_subdivisions_maxtess = {0, "r_subdivisions_maxtess", "1024", "maximum number of subdivisions (prevents curves beyond a certain detail level, limits smoothing)"};
  37 cvar_t r_subdivisions_maxvertices = {0, "r_subdivisions_maxvertices", "65536", "maximum vertices allowed per subdivided curve"};
  38 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)"};
  39 cvar_t r_subdivisions_collision_mintess = {0, "r_subdivisions_collision_mintess", "1", "minimum number of subdivisions (values above 1 will smooth curves that don't need it)"};
  40 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)"};
  41 cvar_t r_subdivisions_collision_maxvertices = {0, "r_subdivisions_collision_maxvertices", "4225", "maximum vertices allowed per subdivided curve"};
  42 cvar_t mod_q3bsp_curves_collisions = {0, "mod_q3bsp_curves_collisions", "1", "enables collisions with curves (SLOW)"};
  43 cvar_t mod_q3bsp_optimizedtraceline = {0, "mod_q3bsp_optimizedtraceline", "1", "whether to use optimized traceline code for line traces (as opposed to tracebox code)"};
  44 cvar_t mod_q3bsp_debugtracebrush = {0, "mod_q3bsp_debugtracebrush", "0", "selects different tracebrush bsp recursion algorithms (for debugging purposes only)"};
  45 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, ..."};
  46
  47 static texture_t mod_q1bsp_texture_solid;
  48 static texture_t mod_q1bsp_texture_sky;
  49 static texture_t mod_q1bsp_texture_lava;
  50 static texture_t mod_q1bsp_texture_slime;
  51 static texture_t mod_q1bsp_texture_water;
  52
  53 void Mod_BrushInit(void)
  54 {
  55 //      Cvar_RegisterVariable(&r_subdivide_size);
  56         Cvar_RegisterVariable(&halflifebsp);
  57         Cvar_RegisterVariable(&r_novis);
  58         Cvar_RegisterVariable(&r_picmipworld);
  59         Cvar_RegisterVariable(&r_nosurftextures);
  60         Cvar_RegisterVariable(&r_subdivisions_tolerance);
  61         Cvar_RegisterVariable(&r_subdivisions_mintess);
  62         Cvar_RegisterVariable(&r_subdivisions_maxtess);
  63         Cvar_RegisterVariable(&r_subdivisions_maxvertices);
  64         Cvar_RegisterVariable(&r_subdivisions_collision_tolerance);
  65         Cvar_RegisterVariable(&r_subdivisions_collision_mintess);
  66         Cvar_RegisterVariable(&r_subdivisions_collision_maxtess);
  67         Cvar_RegisterVariable(&r_subdivisions_collision_maxvertices);
  68         Cvar_RegisterVariable(&mod_q3bsp_curves_collisions);
  69         Cvar_RegisterVariable(&mod_q3bsp_optimizedtraceline);
  70         Cvar_RegisterVariable(&mod_q3bsp_debugtracebrush);
  71         Cvar_RegisterVariable(&mod_q3bsp_lightmapmergepower);
  72
  73         memset(&mod_q1bsp_texture_solid, 0, sizeof(mod_q1bsp_texture_solid));
  74         strlcpy(mod_q1bsp_texture_solid.name, "solid" , sizeof(mod_q1bsp_texture_solid.name));
  75         mod_q1bsp_texture_solid.surfaceflags = 0;
  76         mod_q1bsp_texture_solid.supercontents = SUPERCONTENTS_SOLID;
  77
  78         mod_q1bsp_texture_sky = mod_q1bsp_texture_solid;
  79         strlcpy(mod_q1bsp_texture_sky.name, "sky", sizeof(mod_q1bsp_texture_sky.name));
  80         mod_q1bsp_texture_sky.surfaceflags = Q3SURFACEFLAG_SKY | Q3SURFACEFLAG_NOIMPACT | Q3SURFACEFLAG_NOMARKS | Q3SURFACEFLAG_NODLIGHT | Q3SURFACEFLAG_NOLIGHTMAP;
  81         mod_q1bsp_texture_sky.supercontents = SUPERCONTENTS_SKY | SUPERCONTENTS_NODROP;
  82
  83         mod_q1bsp_texture_lava = mod_q1bsp_texture_solid;
  84         strlcpy(mod_q1bsp_texture_lava.name, "*lava", sizeof(mod_q1bsp_texture_lava.name));
  85         mod_q1bsp_texture_lava.surfaceflags = Q3SURFACEFLAG_NOMARKS;
  86         mod_q1bsp_texture_lava.supercontents = SUPERCONTENTS_LAVA | SUPERCONTENTS_NODROP;
  87
  88         mod_q1bsp_texture_slime = mod_q1bsp_texture_solid;
  89         strlcpy(mod_q1bsp_texture_slime.name, "*slime", sizeof(mod_q1bsp_texture_slime.name));
  90         mod_q1bsp_texture_slime.surfaceflags = Q3SURFACEFLAG_NOMARKS;
  91         mod_q1bsp_texture_slime.supercontents = SUPERCONTENTS_SLIME;
  92
  93         mod_q1bsp_texture_water = mod_q1bsp_texture_solid;
  94         strlcpy(mod_q1bsp_texture_water.name, "*water", sizeof(mod_q1bsp_texture_water.name));
  95         mod_q1bsp_texture_water.surfaceflags = Q3SURFACEFLAG_NOMARKS;
  96         mod_q1bsp_texture_water.supercontents = SUPERCONTENTS_WATER;
  97 }
  98
  99 static mleaf_t *Mod_Q1BSP_PointInLeaf(dp_model_t *model, const vec3_t p)
 100 {
 101         mnode_t *node;
 102
 103         if (model == NULL)
 104                 return NULL;
 105
 106         // LordHavoc: modified to start at first clip node,
 107         // in other words: first node of the (sub)model
 108         node = model->brush.data_nodes + model->brushq1.hulls[0].firstclipnode;
 109         while (node->plane)
 110                 node = node->children[(node->plane->type < 3 ? p[node->plane->type] : DotProduct(p,node->plane->normal)) < node->plane->dist];
 111
 112         return (mleaf_t *)node;
 113 }
 114
 115 static void Mod_Q1BSP_AmbientSoundLevelsForPoint(dp_model_t *model, const vec3_t p, unsigned char *out, int outsize)
 116 {
 117         int i;
 118         mleaf_t *leaf;
 119         leaf = Mod_Q1BSP_PointInLeaf(model, p);
 120         if (leaf)
 121         {
 122                 i = min(outsize, (int)sizeof(leaf->ambient_sound_level));
 123                 if (i)
 124                 {
 125                         memcpy(out, leaf->ambient_sound_level, i);
 126                         out += i;
 127                         outsize -= i;
 128                 }
 129         }
 130         if (outsize)
 131                 memset(out, 0, outsize);
 132 }
 133
 134 static int Mod_Q1BSP_FindBoxClusters(dp_model_t *model, const vec3_t mins, const vec3_t maxs, int maxclusters, int *clusterlist)
 135 {
 136         int numclusters = 0;
 137         int nodestackindex = 0;
 138         mnode_t *node, *nodestack[1024];
 139         if (!model->brush.num_pvsclusters)
 140                 return -1;
 141         node = model->brush.data_nodes;
 142         for (;;)
 143         {
 144 #if 1
 145                 if (node->plane)
 146                 {
 147                         // node - recurse down the BSP tree
 148                         int sides = BoxOnPlaneSide(mins, maxs, node->plane);
 149                         if (sides < 3)
 150                         {
 151                                 if (sides == 0)
 152                                         return -1; // ERROR: NAN bounding box!
 153                                 // box is on one side of plane, take that path
 154                                 node = node->children[sides-1];
 155                         }
 156                         else
 157                         {
 158                                 // box crosses plane, take one path and remember the other
 159                                 if (nodestackindex < 1024)
 160                                         nodestack[nodestackindex++] = node->children[0];
 161                                 node = node->children[1];
 162                         }
 163                         continue;
 164                 }
 165                 else
 166                 {
 167                         // leaf - add clusterindex to list
 168                         if (numclusters < maxclusters)
 169                                 clusterlist[numclusters] = ((mleaf_t *)node)->clusterindex;
 170                         numclusters++;
 171                 }
 172 #else
 173                 if (BoxesOverlap(mins, maxs, node->mins, node->maxs))
 174                 {
 175                         if (node->plane)
 176                         {
 177                                 if (nodestackindex < 1024)
 178                                         nodestack[nodestackindex++] = node->children[0];
 179                                 node = node->children[1];
 180                                 continue;
 181                         }
 182                         else
 183                         {
 184                                 // leaf - add clusterindex to list
 185                                 if (numclusters < maxclusters)
 186                                         clusterlist[numclusters] = ((mleaf_t *)node)->clusterindex;
 187                                 numclusters++;
 188                         }
 189                 }
 190 #endif
 191                 // try another path we didn't take earlier
 192                 if (nodestackindex == 0)
 193                         break;
 194                 node = nodestack[--nodestackindex];
 195         }
 196         // return number of clusters found (even if more than the maxclusters)
 197         return numclusters;
 198 }
 199
 200 static int Mod_Q1BSP_BoxTouchingPVS(dp_model_t *model, const unsigned char *pvs, const vec3_t mins, const vec3_t maxs)
 201 {
 202         int nodestackindex = 0;
 203         mnode_t *node, *nodestack[1024];
 204         if (!model->brush.num_pvsclusters)
 205                 return true;
 206         node = model->brush.data_nodes;
 207         for (;;)
 208         {
 209 #if 1
 210                 if (node->plane)
 211                 {
 212                         // node - recurse down the BSP tree
 213                         int sides = BoxOnPlaneSide(mins, maxs, node->plane);
 214                         if (sides < 3)
 215                         {
 216                                 if (sides == 0)
 217                                         return -1; // ERROR: NAN bounding box!
 218                                 // box is on one side of plane, take that path
 219                                 node = node->children[sides-1];
 220                         }
 221                         else
 222                         {
 223                                 // box crosses plane, take one path and remember the other
 224                                 if (nodestackindex < 1024)
 225                                         nodestack[nodestackindex++] = node->children[0];
 226                                 node = node->children[1];
 227                         }
 228                         continue;
 229                 }
 230                 else
 231                 {
 232                         // leaf - check cluster bit
 233                         int clusterindex = ((mleaf_t *)node)->clusterindex;
 234                         if (CHECKPVSBIT(pvs, clusterindex))
 235                         {
 236                                 // it is visible, return immediately with the news
 237                                 return true;
 238                         }
 239                 }
 240 #else
 241                 if (BoxesOverlap(mins, maxs, node->mins, node->maxs))
 242                 {
 243                         if (node->plane)
 244                         {
 245                                 if (nodestackindex < 1024)
 246                                         nodestack[nodestackindex++] = node->children[0];
 247                                 node = node->children[1];
 248                                 continue;
 249                         }
 250                         else
 251                         {
 252                                 // leaf - check cluster bit
 253                                 int clusterindex = ((mleaf_t *)node)->clusterindex;
 254                                 if (CHECKPVSBIT(pvs, clusterindex))
 255                                 {
 256                                         // it is visible, return immediately with the news
 257                                         return true;
 258                                 }
 259                         }
 260                 }
 261 #endif
 262                 // nothing to see here, try another path we didn't take earlier
 263                 if (nodestackindex == 0)
 264                         break;
 265                 node = nodestack[--nodestackindex];
 266         }
 267         // it is not visible
 268         return false;
 269 }
 270
 271 static int Mod_Q1BSP_BoxTouchingLeafPVS(dp_model_t *model, const unsigned char *pvs, const vec3_t mins, const vec3_t maxs)
 272 {
 273         int nodestackindex = 0;
 274         mnode_t *node, *nodestack[1024];
 275         if (!model->brush.num_leafs)
 276                 return true;
 277         node = model->brush.data_nodes;
 278         for (;;)
 279         {
 280 #if 1
 281                 if (node->plane)
 282                 {
 283                         // node - recurse down the BSP tree
 284                         int sides = BoxOnPlaneSide(mins, maxs, node->plane);
 285                         if (sides < 3)
 286                         {
 287                                 if (sides == 0)
 288                                         return -1; // ERROR: NAN bounding box!
 289                                 // box is on one side of plane, take that path
 290                                 node = node->children[sides-1];
 291                         }
 292                         else
 293                         {
 294                                 // box crosses plane, take one path and remember the other
 295                                 if (nodestackindex < 1024)
 296                                         nodestack[nodestackindex++] = node->children[0];
 297                                 node = node->children[1];
 298                         }
 299                         continue;
 300                 }
 301                 else
 302                 {
 303                         // leaf - check cluster bit
 304                         int clusterindex = ((mleaf_t *)node) - model->brush.data_leafs;
 305                         if (CHECKPVSBIT(pvs, clusterindex))
 306                         {
 307                                 // it is visible, return immediately with the news
 308                                 return true;
 309                         }
 310                 }
 311 #else
 312                 if (BoxesOverlap(mins, maxs, node->mins, node->maxs))
 313                 {
 314                         if (node->plane)
 315                         {
 316                                 if (nodestackindex < 1024)
 317                                         nodestack[nodestackindex++] = node->children[0];
 318                                 node = node->children[1];
 319                                 continue;
 320                         }
 321                         else
 322                         {
 323                                 // leaf - check cluster bit
 324                                 int clusterindex = ((mleaf_t *)node) - model->brush.data_leafs;
 325                                 if (CHECKPVSBIT(pvs, clusterindex))
 326                                 {
 327                                         // it is visible, return immediately with the news
 328                                         return true;
 329                                 }
 330                         }
 331                 }
 332 #endif
 333                 // nothing to see here, try another path we didn't take earlier
 334                 if (nodestackindex == 0)
 335                         break;
 336                 node = nodestack[--nodestackindex];
 337         }
 338         // it is not visible
 339         return false;
 340 }
 341
 342 static int Mod_Q1BSP_BoxTouchingVisibleLeafs(dp_model_t *model, const unsigned char *visibleleafs, const vec3_t mins, const vec3_t maxs)
 343 {
 344         int nodestackindex = 0;
 345         mnode_t *node, *nodestack[1024];
 346         if (!model->brush.num_leafs)
 347                 return true;
 348         node = model->brush.data_nodes;
 349         for (;;)
 350         {
 351 #if 1
 352                 if (node->plane)
 353                 {
 354                         // node - recurse down the BSP tree
 355                         int sides = BoxOnPlaneSide(mins, maxs, node->plane);
 356                         if (sides < 3)
 357                         {
 358                                 if (sides == 0)
 359                                         return -1; // ERROR: NAN bounding box!
 360                                 // box is on one side of plane, take that path
 361                                 node = node->children[sides-1];
 362                         }
 363                         else
 364                         {
 365                                 // box crosses plane, take one path and remember the other
 366                                 if (nodestackindex < 1024)
 367                                         nodestack[nodestackindex++] = node->children[0];
 368                                 node = node->children[1];
 369                         }
 370                         continue;
 371                 }
 372                 else
 373                 {
 374                         // leaf - check if it is visible
 375                         if (visibleleafs[(mleaf_t *)node - model->brush.data_leafs])
 376                         {
 377                                 // it is visible, return immediately with the news
 378                                 return true;
 379                         }
 380                 }
 381 #else
 382                 if (BoxesOverlap(mins, maxs, node->mins, node->maxs))
 383                 {
 384                         if (node->plane)
 385                         {
 386                                 if (nodestackindex < 1024)
 387                                         nodestack[nodestackindex++] = node->children[0];
 388                                 node = node->children[1];
 389                                 continue;
 390                         }
 391                         else
 392                         {
 393                                 // leaf - check if it is visible
 394                                 if (visibleleafs[(mleaf_t *)node - model->brush.data_leafs])
 395                                 {
 396                                         // it is visible, return immediately with the news
 397                                         return true;
 398                                 }
 399                         }
 400                 }
 401 #endif
 402                 // nothing to see here, try another path we didn't take earlier
 403                 if (nodestackindex == 0)
 404                         break;
 405                 node = nodestack[--nodestackindex];
 406         }
 407         // it is not visible
 408         return false;
 409 }
 410
 411 typedef struct findnonsolidlocationinfo_s
 412 {
 413         vec3_t center;
 414         vec_t radius;
 415         vec3_t nudge;
 416         vec_t bestdist;
 417         dp_model_t *model;
 418 }
 419 findnonsolidlocationinfo_t;
 420
 421 static void Mod_Q1BSP_FindNonSolidLocation_r_Leaf(findnonsolidlocationinfo_t *info, mleaf_t *leaf)
 422 {
 423         int i, surfacenum, k, *tri, *mark;
 424         float dist, f, vert[3][3], edge[3][3], facenormal[3], edgenormal[3][3], point[3];
 425         msurface_t *surface;
 426         for (surfacenum = 0, mark = leaf->firstleafsurface;surfacenum < leaf->numleafsurfaces;surfacenum++, mark++)
 427         {
 428                 surface = info->model->data_surfaces + *mark;
 429                 if (surface->texture->supercontents & SUPERCONTENTS_SOLID)
 430                 {
 431                         for (k = 0;k < surface->num_triangles;k++)
 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         }
 517 }
 518
 519 static void Mod_Q1BSP_FindNonSolidLocation_r(findnonsolidlocationinfo_t *info, mnode_t *node)
 520 {
 521         if (node->plane)
 522         {
 523                 float f = PlaneDiff(info->center, node->plane);
 524                 if (f >= -info->bestdist)
 525                         Mod_Q1BSP_FindNonSolidLocation_r(info, node->children[0]);
 526                 if (f <= info->bestdist)
 527                         Mod_Q1BSP_FindNonSolidLocation_r(info, node->children[1]);
 528         }
 529         else
 530         {
 531                 if (((mleaf_t *)node)->numleafsurfaces)
 532                         Mod_Q1BSP_FindNonSolidLocation_r_Leaf(info, (mleaf_t *)node);
 533         }
 534 }
 535
 536 static void Mod_Q1BSP_FindNonSolidLocation(dp_model_t *model, const vec3_t in, vec3_t out, float radius)
 537 {
 538         int i;
 539         findnonsolidlocationinfo_t info;
 540         if (model == NULL)
 541         {
 542                 VectorCopy(in, out);
 543                 return;
 544         }
 545         VectorCopy(in, info.center);
 546         info.radius = radius;
 547         info.model = model;
 548         i = 0;
 549         do
 550         {
 551                 VectorClear(info.nudge);
 552                 info.bestdist = radius;
 553                 Mod_Q1BSP_FindNonSolidLocation_r(&info, model->brush.data_nodes + model->brushq1.hulls[0].firstclipnode);
 554                 VectorAdd(info.center, info.nudge, info.center);
 555         }
 556         while (info.bestdist < radius && ++i < 10);
 557         VectorCopy(info.center, out);
 558 }
 559
 560 int Mod_Q1BSP_SuperContentsFromNativeContents(dp_model_t *model, int nativecontents)
 561 {
 562         switch(nativecontents)
 563         {
 564                 case CONTENTS_EMPTY:
 565                         return 0;
 566                 case CONTENTS_SOLID:
 567                         return SUPERCONTENTS_SOLID;
 568                 case CONTENTS_WATER:
 569                         return SUPERCONTENTS_WATER;
 570                 case CONTENTS_SLIME:
 571                         return SUPERCONTENTS_SLIME;
 572                 case CONTENTS_LAVA:
 573                         return SUPERCONTENTS_LAVA | SUPERCONTENTS_NODROP;
 574                 case CONTENTS_SKY:
 575                         return SUPERCONTENTS_SKY | SUPERCONTENTS_NODROP;
 576         }
 577         return 0;
 578 }
 579
 580 int Mod_Q1BSP_NativeContentsFromSuperContents(dp_model_t *model, int supercontents)
 581 {
 582         if (supercontents & (SUPERCONTENTS_SOLID | SUPERCONTENTS_BODY))
 583                 return CONTENTS_SOLID;
 584         if (supercontents & SUPERCONTENTS_SKY)
 585                 return CONTENTS_SKY;
 586         if (supercontents & SUPERCONTENTS_LAVA)
 587                 return CONTENTS_LAVA;
 588         if (supercontents & SUPERCONTENTS_SLIME)
 589                 return CONTENTS_SLIME;
 590         if (supercontents & SUPERCONTENTS_WATER)
 591                 return CONTENTS_WATER;
 592         return CONTENTS_EMPTY;
 593 }
 594
 595 typedef struct RecursiveHullCheckTraceInfo_s
 596 {
 597         // the hull we're tracing through
 598         const hull_t *hull;
 599
 600         // the trace structure to fill in
 601         trace_t *trace;
 602
 603         // start, end, and end - start (in model space)
 604         double start[3];
 605         double end[3];
 606         double dist[3];
 607 }
 608 RecursiveHullCheckTraceInfo_t;
 609
 610 // 1/32 epsilon to keep floating point happy
 611 #define DIST_EPSILON (0.03125)
 612
 613 #define HULLCHECKSTATE_EMPTY 0
 614 #define HULLCHECKSTATE_SOLID 1
 615 #define HULLCHECKSTATE_DONE 2
 616
 617 extern cvar_t collision_prefernudgedfraction;
 618 static int Mod_Q1BSP_RecursiveHullCheck(RecursiveHullCheckTraceInfo_t *t, int num, double p1f, double p2f, double p1[3], double p2[3])
 619 {
 620         // status variables, these don't need to be saved on the stack when
 621         // recursing...  but are because this should be thread-safe
 622         // (note: tracing against a bbox is not thread-safe, yet)
 623         int ret;
 624         mplane_t *plane;
 625         double t1, t2;
 626
 627         // variables that need to be stored on the stack when recursing
 628         mclipnode_t *node;
 629         int side;
 630         double midf, mid[3];
 631
 632         // LordHavoc: a goto!  everyone flee in terror... :)
 633 loc0:
 634         // check for empty
 635         if (num < 0)
 636         {
 637                 num = Mod_Q1BSP_SuperContentsFromNativeContents(NULL, num);
 638                 if (!t->trace->startfound)
 639                 {
 640                         t->trace->startfound = true;
 641                         t->trace->startsupercontents |= num;
 642                 }
 643                 if (num & SUPERCONTENTS_LIQUIDSMASK)
 644                         t->trace->inwater = true;
 645                 if (num == 0)
 646                         t->trace->inopen = true;
 647                 if (num & SUPERCONTENTS_SOLID)
 648                         t->trace->hittexture = &mod_q1bsp_texture_solid;
 649                 else if (num & SUPERCONTENTS_SKY)
 650                         t->trace->hittexture = &mod_q1bsp_texture_sky;
 651                 else if (num & SUPERCONTENTS_LAVA)
 652                         t->trace->hittexture = &mod_q1bsp_texture_lava;
 653                 else if (num & SUPERCONTENTS_SLIME)
 654                         t->trace->hittexture = &mod_q1bsp_texture_slime;
 655                 else
 656                         t->trace->hittexture = &mod_q1bsp_texture_water;
 657                 t->trace->hitq3surfaceflags = t->trace->hittexture->surfaceflags;
 658                 t->trace->hitsupercontents = num;
 659                 if (num & t->trace->hitsupercontentsmask)
 660                 {
 661                         // if the first leaf is solid, set startsolid
 662                         if (t->trace->allsolid)
 663                                 t->trace->startsolid = true;
 664 #if COLLISIONPARANOID >= 3
 665                         Con_Print("S");
 666 #endif
 667                         return HULLCHECKSTATE_SOLID;
 668                 }
 669                 else
 670                 {
 671                         t->trace->allsolid = false;
 672 #if COLLISIONPARANOID >= 3
 673                         Con_Print("E");
 674 #endif
 675                         return HULLCHECKSTATE_EMPTY;
 676                 }
 677         }
 678
 679         // find the point distances
 680         node = t->hull->clipnodes + num;
 681
 682         plane = t->hull->planes + node->planenum;
 683         if (plane->type < 3)
 684         {
 685                 t1 = p1[plane->type] - plane->dist;
 686                 t2 = p2[plane->type] - plane->dist;
 687         }
 688         else
 689         {
 690                 t1 = DotProduct (plane->normal, p1) - plane->dist;
 691                 t2 = DotProduct (plane->normal, p2) - plane->dist;
 692         }
 693
 694         if (t1 < 0)
 695         {
 696                 if (t2 < 0)
 697                 {
 698 #if COLLISIONPARANOID >= 3
 699                         Con_Print("<");
 700 #endif
 701                         num = node->children[1];
 702                         goto loc0;
 703                 }
 704                 side = 1;
 705         }
 706         else
 707         {
 708                 if (t2 >= 0)
 709                 {
 710 #if COLLISIONPARANOID >= 3
 711                         Con_Print(">");
 712 #endif
 713                         num = node->children[0];
 714                         goto loc0;
 715                 }
 716                 side = 0;
 717         }
 718
 719         // the line intersects, find intersection point
 720         // LordHavoc: this uses the original trace for maximum accuracy
 721 #if COLLISIONPARANOID >= 3
 722         Con_Print("M");
 723 #endif
 724         if (plane->type < 3)
 725         {
 726                 t1 = t->start[plane->type] - plane->dist;
 727                 t2 = t->end[plane->type] - plane->dist;
 728         }
 729         else
 730         {
 731                 t1 = DotProduct (plane->normal, t->start) - plane->dist;
 732                 t2 = DotProduct (plane->normal, t->end) - plane->dist;
 733         }
 734
 735         midf = t1 / (t1 - t2);
 736         midf = bound(p1f, midf, p2f);
 737         VectorMA(t->start, midf, t->dist, mid);
 738
 739         // recurse both sides, front side first
 740         ret = Mod_Q1BSP_RecursiveHullCheck(t, node->children[side], p1f, midf, p1, mid);
 741         // if this side is not empty, return what it is (solid or done)
 742         if (ret != HULLCHECKSTATE_EMPTY)
 743                 return ret;
 744
 745         ret = Mod_Q1BSP_RecursiveHullCheck(t, node->children[side ^ 1], midf, p2f, mid, p2);
 746         // if other side is not solid, return what it is (empty or done)
 747         if (ret != HULLCHECKSTATE_SOLID)
 748                 return ret;
 749
 750         // front is air and back is solid, this is the impact point...
 751         if (side)
 752         {
 753                 t->trace->plane.dist = -plane->dist;
 754                 VectorNegate (plane->normal, t->trace->plane.normal);
 755         }
 756         else
 757         {
 758                 t->trace->plane.dist = plane->dist;
 759                 VectorCopy (plane->normal, t->trace->plane.normal);
 760         }
 761
 762         // calculate the true fraction
 763         t1 = DotProduct(t->trace->plane.normal, t->start) - t->trace->plane.dist;
 764         t2 = DotProduct(t->trace->plane.normal, t->end) - t->trace->plane.dist;
 765         midf = t1 / (t1 - t2);
 766         t->trace->realfraction = bound(0, midf, 1);
 767
 768         // calculate the return fraction which is nudged off the surface a bit
 769         midf = (t1 - DIST_EPSILON) / (t1 - t2);
 770         t->trace->fraction = bound(0, midf, 1);
 771
 772         if (collision_prefernudgedfraction.integer)
 773                 t->trace->realfraction = t->trace->fraction;
 774
 775 #if COLLISIONPARANOID >= 3
 776         Con_Print("D");
 777 #endif
 778         return HULLCHECKSTATE_DONE;
 779 }
 780
 781 //#if COLLISIONPARANOID < 2
 782 static int Mod_Q1BSP_RecursiveHullCheckPoint(RecursiveHullCheckTraceInfo_t *t, int num)
 783 {
 784         mplane_t *plane;
 785         mclipnode_t *nodes = t->hull->clipnodes;
 786         mplane_t *planes = t->hull->planes;
 787         vec3_t point;
 788         VectorCopy(t->start, point);
 789         while (num >= 0)
 790         {
 791                 plane = planes + nodes[num].planenum;
 792                 num = nodes[num].children[(plane->type < 3 ? point[plane->type] : DotProduct(plane->normal, point)) < plane->dist];
 793         }
 794         num = Mod_Q1BSP_SuperContentsFromNativeContents(NULL, num);
 795         t->trace->startsupercontents |= num;
 796         if (num & SUPERCONTENTS_LIQUIDSMASK)
 797                 t->trace->inwater = true;
 798         if (num == 0)
 799                 t->trace->inopen = true;
 800         if (num & t->trace->hitsupercontentsmask)
 801         {
 802                 t->trace->allsolid = t->trace->startsolid = true;
 803                 return HULLCHECKSTATE_SOLID;
 804         }
 805         else
 806         {
 807                 t->trace->allsolid = t->trace->startsolid = false;
 808                 return HULLCHECKSTATE_EMPTY;
 809         }
 810 }
 811 //#endif
 812
 813 static void Mod_Q1BSP_TraceBox(struct model_s *model, int frame, trace_t *trace, const vec3_t start, const vec3_t boxmins, const vec3_t boxmaxs, const vec3_t end, int hitsupercontentsmask)
 814 {
 815         // this function currently only supports same size start and end
 816         double boxsize[3];
 817         RecursiveHullCheckTraceInfo_t rhc;
 818
 819         memset(&rhc, 0, sizeof(rhc));
 820         memset(trace, 0, sizeof(trace_t));
 821         rhc.trace = trace;
 822         rhc.trace->hitsupercontentsmask = hitsupercontentsmask;
 823         rhc.trace->fraction = 1;
 824         rhc.trace->realfraction = 1;
 825         rhc.trace->allsolid = true;
 826         VectorSubtract(boxmaxs, boxmins, boxsize);
 827         if (boxsize[0] < 3)
 828                 rhc.hull = &model->brushq1.hulls[0]; // 0x0x0
 829         else if (model->brush.ishlbsp)
 830         {
 831                 // LordHavoc: this has to have a minor tolerance (the .1) because of
 832                 // minor float precision errors from the box being transformed around
 833                 if (boxsize[0] < 32.1)
 834                 {
 835                         if (boxsize[2] < 54) // pick the nearest of 36 or 72
 836                                 rhc.hull = &model->brushq1.hulls[3]; // 32x32x36
 837                         else
 838                                 rhc.hull = &model->brushq1.hulls[1]; // 32x32x72
 839                 }
 840                 else
 841                         rhc.hull = &model->brushq1.hulls[2]; // 64x64x64
 842         }
 843         else
 844         {
 845                 // LordHavoc: this has to have a minor tolerance (the .1) because of
 846                 // minor float precision errors from the box being transformed around
 847                 if (boxsize[0] < 32.1)
 848                         rhc.hull = &model->brushq1.hulls[1]; // 32x32x56
 849                 else
 850                         rhc.hull = &model->brushq1.hulls[2]; // 64x64x88
 851         }
 852         VectorMAMAM(1, start, 1, boxmins, -1, rhc.hull->clip_mins, rhc.start);
 853         VectorMAMAM(1, end, 1, boxmins, -1, rhc.hull->clip_mins, rhc.end);
 854         VectorSubtract(rhc.end, rhc.start, rhc.dist);
 855 #if COLLISIONPARANOID >= 2
 856         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]);
 857         Mod_Q1BSP_RecursiveHullCheck(&rhc, rhc.hull->firstclipnode, 0, 1, rhc.start, rhc.end);
 858         {
 859
 860                 double test[3];
 861                 trace_t testtrace;
 862                 VectorLerp(rhc.start, rhc.trace->fraction, rhc.end, test);
 863                 memset(&testtrace, 0, sizeof(trace_t));
 864                 rhc.trace = &testtrace;
 865                 rhc.trace->hitsupercontentsmask = hitsupercontentsmask;
 866                 rhc.trace->fraction = 1;
 867                 rhc.trace->realfraction = 1;
 868                 rhc.trace->allsolid = true;
 869                 VectorCopy(test, rhc.start);
 870                 VectorCopy(test, rhc.end);
 871                 VectorClear(rhc.dist);
 872                 Mod_Q1BSP_RecursiveHullCheckPoint(&rhc, rhc.hull->firstclipnode);
 873                 //Mod_Q1BSP_RecursiveHullCheck(&rhc, rhc.hull->firstclipnode, 0, 1, test, test);
 874                 if (!trace->startsolid && testtrace.startsolid)
 875                         Con_Printf(" - ended in solid!\n");
 876         }
 877         Con_Print("\n");
 878 #else
 879         if (VectorLength2(rhc.dist))
 880                 Mod_Q1BSP_RecursiveHullCheck(&rhc, rhc.hull->firstclipnode, 0, 1, rhc.start, rhc.end);
 881         else
 882                 Mod_Q1BSP_RecursiveHullCheckPoint(&rhc, rhc.hull->firstclipnode);
 883 #endif
 884 }
 885
 886 static int Mod_Q1BSP_PointSuperContents(struct model_s *model, int frame, const vec3_t point)
 887 {
 888         int num = model->brushq1.hulls[0].firstclipnode;
 889         mplane_t *plane;
 890         mclipnode_t *nodes = model->brushq1.hulls[0].clipnodes;
 891         mplane_t *planes = model->brushq1.hulls[0].planes;
 892         while (num >= 0)
 893         {
 894                 plane = planes + nodes[num].planenum;
 895                 num = nodes[num].children[(plane->type < 3 ? point[plane->type] : DotProduct(plane->normal, point)) < plane->dist];
 896         }
 897         return Mod_Q1BSP_SuperContentsFromNativeContents(NULL, num);
 898 }
 899
 900 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)
 901 {
 902 #if 1
 903         colbrushf_t cbox;
 904         colplanef_t cbox_planes[6];
 905         cbox.supercontents = boxsupercontents;
 906         cbox.numplanes = 6;
 907         cbox.numpoints = 0;
 908         cbox.numtriangles = 0;
 909         cbox.planes = cbox_planes;
 910         cbox.points = NULL;
 911         cbox.elements = NULL;
 912         cbox.markframe = 0;
 913         cbox.mins[0] = 0;
 914         cbox.mins[1] = 0;
 915         cbox.mins[2] = 0;
 916         cbox.maxs[0] = 0;
 917         cbox.maxs[1] = 0;
 918         cbox.maxs[2] = 0;
 919         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];
 920         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];
 921         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];
 922         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];
 923         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];
 924         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];
 925         cbox_planes[0].q3surfaceflags = boxq3surfaceflags;cbox_planes[0].texture = boxtexture;
 926         cbox_planes[1].q3surfaceflags = boxq3surfaceflags;cbox_planes[1].texture = boxtexture;
 927         cbox_planes[2].q3surfaceflags = boxq3surfaceflags;cbox_planes[2].texture = boxtexture;
 928         cbox_planes[3].q3surfaceflags = boxq3surfaceflags;cbox_planes[3].texture = boxtexture;
 929         cbox_planes[4].q3surfaceflags = boxq3surfaceflags;cbox_planes[4].texture = boxtexture;
 930         cbox_planes[5].q3surfaceflags = boxq3surfaceflags;cbox_planes[5].texture = boxtexture;
 931         memset(trace, 0, sizeof(trace_t));
 932         trace->hitsupercontentsmask = hitsupercontentsmask;
 933         trace->fraction = 1;
 934         trace->realfraction = 1;
 935         Collision_TraceLineBrushFloat(trace, start, end, &cbox, &cbox);
 936 #else
 937         RecursiveHullCheckTraceInfo_t rhc;
 938         static hull_t box_hull;
 939         static mclipnode_t box_clipnodes[6];
 940         static mplane_t box_planes[6];
 941         // fill in a default trace
 942         memset(&rhc, 0, sizeof(rhc));
 943         memset(trace, 0, sizeof(trace_t));
 944         //To keep everything totally uniform, bounding boxes are turned into small
 945         //BSP trees instead of being compared directly.
 946         // create a temp hull from bounding box sizes
 947         box_planes[0].dist = cmaxs[0] - mins[0];
 948         box_planes[1].dist = cmins[0] - maxs[0];
 949         box_planes[2].dist = cmaxs[1] - mins[1];
 950         box_planes[3].dist = cmins[1] - maxs[1];
 951         box_planes[4].dist = cmaxs[2] - mins[2];
 952         box_planes[5].dist = cmins[2] - maxs[2];
 953 #if COLLISIONPARANOID >= 3
 954         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]);
 955 #endif
 956
 957         if (box_hull.clipnodes == NULL)
 958         {
 959                 int i, side;
 960
 961                 //Set up the planes and clipnodes so that the six floats of a bounding box
 962                 //can just be stored out and get a proper hull_t structure.
 963
 964                 box_hull.clipnodes = box_clipnodes;
 965                 box_hull.planes = box_planes;
 966                 box_hull.firstclipnode = 0;
 967                 box_hull.lastclipnode = 5;
 968
 969                 for (i = 0;i < 6;i++)
 970                 {
 971                         box_clipnodes[i].planenum = i;
 972
 973                         side = i&1;
 974
 975                         box_clipnodes[i].children[side] = CONTENTS_EMPTY;
 976                         if (i != 5)
 977                                 box_clipnodes[i].children[side^1] = i + 1;
 978                         else
 979                                 box_clipnodes[i].children[side^1] = CONTENTS_SOLID;
 980
 981                         box_planes[i].type = i>>1;
 982                         box_planes[i].normal[i>>1] = 1;
 983                 }
 984         }
 985
 986         // trace a line through the generated clipping hull
 987         //rhc.boxsupercontents = boxsupercontents;
 988         rhc.hull = &box_hull;
 989         rhc.trace = trace;
 990         rhc.trace->hitsupercontentsmask = hitsupercontentsmask;
 991         rhc.trace->fraction = 1;
 992         rhc.trace->realfraction = 1;
 993         rhc.trace->allsolid = true;
 994         VectorCopy(start, rhc.start);
 995         VectorCopy(end, rhc.end);
 996         VectorSubtract(rhc.end, rhc.start, rhc.dist);
 997         Mod_Q1BSP_RecursiveHullCheck(&rhc, rhc.hull->firstclipnode, 0, 1, rhc.start, rhc.end);
 998         //VectorMA(rhc.start, rhc.trace->fraction, rhc.dist, rhc.trace->endpos);
 999         if (rhc.trace->startsupercontents)
1000                 rhc.trace->startsupercontents = boxsupercontents;
1001 #endif
1002 }
1003
1004 static int Mod_Q1BSP_TraceLineOfSight_RecursiveNodeCheck(mnode_t *node, double p1[3], double p2[3])
1005 {
1006         double t1, t2;
1007         double midf, mid[3];
1008         int ret, side;
1009
1010         // check for empty
1011         while (node->plane)
1012         {
1013                 // find the point distances
1014                 mplane_t *plane = node->plane;
1015                 if (plane->type < 3)
1016                 {
1017                         t1 = p1[plane->type] - plane->dist;
1018                         t2 = p2[plane->type] - plane->dist;
1019                 }
1020                 else
1021                 {
1022                         t1 = DotProduct (plane->normal, p1) - plane->dist;
1023                         t2 = DotProduct (plane->normal, p2) - plane->dist;
1024                 }
1025
1026                 if (t1 < 0)
1027                 {
1028                         if (t2 < 0)
1029                         {
1030                                 node = node->children[1];
1031                                 continue;
1032                         }
1033                         side = 1;
1034                 }
1035                 else
1036                 {
1037                         if (t2 >= 0)
1038                         {
1039                                 node = node->children[0];
1040                                 continue;
1041                         }
1042                         side = 0;
1043                 }
1044
1045                 midf = t1 / (t1 - t2);
1046                 VectorLerp(p1, midf, p2, mid);
1047
1048                 // recurse both sides, front side first
1049                 // return 2 if empty is followed by solid (hit something)
1050                 // do not return 2 if both are solid or both empty,
1051                 // or if start is solid and end is empty
1052                 // as these degenerate cases usually indicate the eye is in solid and
1053                 // should see the target point anyway
1054                 ret = Mod_Q1BSP_TraceLineOfSight_RecursiveNodeCheck(node->children[side    ], p1, mid);
1055                 if (ret != 0)
1056                         return ret;
1057                 ret = Mod_Q1BSP_TraceLineOfSight_RecursiveNodeCheck(node->children[side ^ 1], mid, p2);
1058                 if (ret != 1)
1059                         return ret;
1060                 return 2;
1061         }
1062         return ((mleaf_t *)node)->clusterindex < 0;
1063 }
1064
1065 static qboolean Mod_Q1BSP_TraceLineOfSight(struct model_s *model, const vec3_t start, const vec3_t end)
1066 {
1067         // this function currently only supports same size start and end
1068         double tracestart[3], traceend[3];
1069         VectorCopy(start, tracestart);
1070         VectorCopy(end, traceend);
1071         return Mod_Q1BSP_TraceLineOfSight_RecursiveNodeCheck(model->brush.data_nodes, tracestart, traceend) != 2;
1072 }
1073
1074 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)
1075 {
1076         int side;
1077         float front, back;
1078         float mid, distz = endz - startz;
1079
1080 loc0:
1081         if (!node->plane)
1082                 return false;           // didn't hit anything
1083
1084         switch (node->plane->type)
1085         {
1086         case PLANE_X:
1087                 node = node->children[x < node->plane->dist];
1088                 goto loc0;
1089         case PLANE_Y:
1090                 node = node->children[y < node->plane->dist];
1091                 goto loc0;
1092         case PLANE_Z:
1093                 side = startz < node->plane->dist;
1094                 if ((endz < node->plane->dist) == side)
1095                 {
1096                         node = node->children[side];
1097                         goto loc0;
1098                 }
1099                 // found an intersection
1100                 mid = node->plane->dist;
1101                 break;
1102         default:
1103                 back = front = x * node->plane->normal[0] + y * node->plane->normal[1];
1104                 front += startz * node->plane->normal[2];
1105                 back += endz * node->plane->normal[2];
1106                 side = front < node->plane->dist;
1107                 if ((back < node->plane->dist) == side)
1108                 {
1109                         node = node->children[side];
1110                         goto loc0;
1111                 }
1112                 // found an intersection
1113                 mid = startz + distz * (front - node->plane->dist) / (front - back);
1114                 break;
1115         }
1116
1117         // go down front side
1118         if (node->children[side]->plane && Mod_Q1BSP_LightPoint_RecursiveBSPNode(model, ambientcolor, diffusecolor, diffusenormal, node->children[side], x, y, startz, mid))
1119                 return true;    // hit something
1120         else
1121         {
1122                 // check for impact on this node
1123                 if (node->numsurfaces)
1124                 {
1125                         int i, dsi, dti, lmwidth, lmheight;
1126                         float ds, dt;
1127                         msurface_t *surface;
1128                         unsigned char *lightmap;
1129                         int maps, line3, size3;
1130                         float dsfrac;
1131                         float dtfrac;
1132                         float scale, w, w00, w01, w10, w11;
1133
1134                         surface = model->data_surfaces + node->firstsurface;
1135                         for (i = 0;i < node->numsurfaces;i++, surface++)
1136                         {
1137                                 if (!(surface->texture->basematerialflags & MATERIALFLAG_WALL) || !surface->lightmapinfo->samples)
1138                                         continue;       // no lightmaps
1139
1140                                 // location we want to sample in the lightmap
1141                                 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;
1142                                 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;
1143
1144                                 // check the bounds
1145                                 dsi = (int)ds;
1146                                 dti = (int)dt;
1147                                 lmwidth = ((surface->lightmapinfo->extents[0]>>4)+1);
1148                                 lmheight = ((surface->lightmapinfo->extents[1]>>4)+1);
1149
1150                                 // is it in bounds?
1151                                 if (dsi >= 0 && dsi < lmwidth-1 && dti >= 0 && dti < lmheight-1)
1152                                 {
1153                                         // calculate bilinear interpolation factors
1154                                         // and also multiply by fixedpoint conversion factors
1155                                         dsfrac = ds - dsi;
1156                                         dtfrac = dt - dti;
1157                                         w00 = (1 - dsfrac) * (1 - dtfrac) * (1.0f / 32768.0f);
1158                                         w01 = (    dsfrac) * (1 - dtfrac) * (1.0f / 32768.0f);
1159                                         w10 = (1 - dsfrac) * (    dtfrac) * (1.0f / 32768.0f);
1160                                         w11 = (    dsfrac) * (    dtfrac) * (1.0f / 32768.0f);
1161
1162                                         // values for pointer math
1163                                         line3 = lmwidth * 3; // LordHavoc: *3 for colored lighting
1164                                         size3 = lmwidth * lmheight * 3; // LordHavoc: *3 for colored lighting
1165
1166                                         // look up the pixel
1167                                         lightmap = surface->lightmapinfo->samples + dti * line3 + dsi*3; // LordHavoc: *3 for colored lighting
1168
1169                                         // bilinear filter each lightmap style, and sum them
1170                                         for (maps = 0;maps < MAXLIGHTMAPS && surface->lightmapinfo->styles[maps] != 255;maps++)
1171                                         {
1172                                                 scale = r_refdef.scene.lightstylevalue[surface->lightmapinfo->styles[maps]];
1173                                                 w = w00 * scale;VectorMA(ambientcolor, w, lightmap            , ambientcolor);
1174                                                 w = w01 * scale;VectorMA(ambientcolor, w, lightmap + 3        , ambientcolor);
1175                                                 w = w10 * scale;VectorMA(ambientcolor, w, lightmap + line3    , ambientcolor);
1176                                                 w = w11 * scale;VectorMA(ambientcolor, w, lightmap + line3 + 3, ambientcolor);
1177                                                 lightmap += size3;
1178                                         }
1179
1180                                         return true; // success
1181                                 }
1182                         }
1183                 }
1184
1185                 // go down back side
1186                 node = node->children[side ^ 1];
1187                 startz = mid;
1188                 distz = endz - startz;
1189                 goto loc0;
1190         }
1191 }
1192
1193 void Mod_Q1BSP_LightPoint(dp_model_t *model, const vec3_t p, vec3_t ambientcolor, vec3_t diffusecolor, vec3_t diffusenormal)
1194 {
1195         // pretend lighting is coming down from above (due to lack of a lightgrid to know primary lighting direction)
1196         VectorSet(diffusenormal, 0, 0, 1);
1197
1198         if (!model->brushq1.lightdata)
1199         {
1200                 VectorSet(ambientcolor, 1, 1, 1);
1201                 VectorSet(diffusecolor, 0, 0, 0);
1202                 return;
1203         }
1204
1205         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);
1206 }
1207
1208 static void Mod_Q1BSP_DecompressVis(const unsigned char *in, const unsigned char *inend, unsigned char *out, unsigned char *outend)
1209 {
1210         int c;
1211         unsigned char *outstart = out;
1212         while (out < outend)
1213         {
1214                 if (in == inend)
1215                 {
1216                         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));
1217                         return;
1218                 }
1219                 c = *in++;
1220                 if (c)
1221                         *out++ = c;
1222                 else
1223                 {
1224                         if (in == inend)
1225                         {
1226                                 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));
1227                                 return;
1228                         }
1229                         for (c = *in++;c > 0;c--)
1230                         {
1231                                 if (out == outend)
1232                                 {
1233                                         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));
1234                                         return;
1235                                 }
1236                                 *out++ = 0;
1237                         }
1238                 }
1239         }
1240 }
1241
1242 /*
1243 =============
1244 R_Q1BSP_LoadSplitSky
1245
1246 A sky texture is 256*128, with the right side being a masked overlay
1247 ==============
1248 */
1249 void R_Q1BSP_LoadSplitSky (unsigned char *src, int width, int height, int bytesperpixel)
1250 {
1251         int i, j;
1252         unsigned solidpixels[128*128], alphapixels[128*128];
1253
1254         // allocate a texture pool if we need it
1255         if (loadmodel->texturepool == NULL && cls.state != ca_dedicated)
1256                 loadmodel->texturepool = R_AllocTexturePool();
1257
1258         if (bytesperpixel == 4)
1259         {
1260                 for (i = 0;i < 128;i++)
1261                 {
1262                         for (j = 0;j < 128;j++)
1263                         {
1264                                 solidpixels[(i*128) + j] = ((unsigned *)src)[i*256+j+128];
1265                                 alphapixels[(i*128) + j] = ((unsigned *)src)[i*256+j];
1266                         }
1267                 }
1268         }
1269         else
1270         {
1271                 // make an average value for the back to avoid
1272                 // a fringe on the top level
1273                 int p, r, g, b;
1274                 union
1275                 {
1276                         unsigned int i;
1277                         unsigned char b[4];
1278                 }
1279                 bgra;
1280                 r = g = b = 0;
1281                 for (i = 0;i < 128;i++)
1282                 {
1283                         for (j = 0;j < 128;j++)
1284                         {
1285                                 p = src[i*256 + j + 128];
1286                                 r += palette_rgb[p][0];
1287                                 g += palette_rgb[p][1];
1288                                 b += palette_rgb[p][2];
1289                         }
1290                 }
1291                 bgra.b[2] = r/(128*128);
1292                 bgra.b[1] = g/(128*128);
1293                 bgra.b[0] = b/(128*128);
1294                 bgra.b[3] = 0;
1295                 for (i = 0;i < 128;i++)
1296                 {
1297                         for (j = 0;j < 128;j++)
1298                         {
1299                                 solidpixels[(i*128) + j] = palette_bgra_complete[src[i*256 + j + 128]];
1300                                 p = src[i*256 + j];
1301                                 alphapixels[(i*128) + j] = p ? palette_bgra_complete[p] : bgra.i;
1302                         }
1303                 }
1304         }
1305
1306         loadmodel->brush.solidskytexture = R_LoadTexture2D(loadmodel->texturepool, "sky_solidtexture", 128, 128, (unsigned char *) solidpixels, TEXTYPE_BGRA, TEXF_PRECACHE, NULL);
1307         loadmodel->brush.alphaskytexture = R_LoadTexture2D(loadmodel->texturepool, "sky_alphatexture", 128, 128, (unsigned char *) alphapixels, TEXTYPE_BGRA, TEXF_ALPHA | TEXF_PRECACHE, NULL);
1308 }
1309
1310 static void Mod_Q1BSP_LoadTextures(lump_t *l)
1311 {
1312         int i, j, k, num, max, altmax, mtwidth, mtheight, *dofs, incomplete;
1313         skinframe_t *skinframe;
1314         miptex_t *dmiptex;
1315         texture_t *tx, *tx2, *anims[10], *altanims[10];
1316         dmiptexlump_t *m;
1317         unsigned char *data, *mtdata;
1318         const char *s;
1319         char mapname[MAX_QPATH], name[MAX_QPATH];
1320         unsigned char zero[4];
1321
1322         memset(zero, 0, sizeof(zero));
1323
1324         loadmodel->data_textures = NULL;
1325
1326         // add two slots for notexture walls and notexture liquids
1327         if (l->filelen)
1328         {
1329                 m = (dmiptexlump_t *)(mod_base + l->fileofs);
1330                 m->nummiptex = LittleLong (m->nummiptex);
1331                 loadmodel->num_textures = m->nummiptex + 2;
1332                 loadmodel->num_texturesperskin = loadmodel->num_textures;
1333         }
1334         else
1335         {
1336                 m = NULL;
1337                 loadmodel->num_textures = 2;
1338                 loadmodel->num_texturesperskin = loadmodel->num_textures;
1339         }
1340
1341         loadmodel->data_textures = (texture_t *)Mem_Alloc(loadmodel->mempool, loadmodel->num_textures * sizeof(texture_t));
1342
1343         // fill out all slots with notexture
1344         if (cls.state != ca_dedicated)
1345                 skinframe = R_SkinFrame_LoadMissing();
1346         else
1347                 skinframe = NULL;
1348         for (i = 0, tx = loadmodel->data_textures;i < loadmodel->num_textures;i++, tx++)
1349         {
1350                 strlcpy(tx->name, "NO TEXTURE FOUND", sizeof(tx->name));
1351                 tx->width = 16;
1352                 tx->height = 16;
1353                 if (cls.state != ca_dedicated)
1354                 {
1355                         tx->numskinframes = 1;
1356                         tx->skinframerate = 1;
1357                         tx->skinframes[0] = skinframe;
1358                         tx->currentskinframe = tx->skinframes[0];
1359                         tx->basematerialflags = 0;
1360                 }
1361                 tx->basematerialflags = MATERIALFLAG_WALL;
1362                 if (i == loadmodel->num_textures - 1)
1363                 {
1364                         tx->basematerialflags |= MATERIALFLAG_WATERSCROLL | MATERIALFLAG_LIGHTBOTHSIDES | MATERIALFLAG_NOSHADOW;
1365                         tx->supercontents = mod_q1bsp_texture_water.supercontents;
1366                         tx->surfaceflags = mod_q1bsp_texture_water.surfaceflags;
1367                 }
1368                 else
1369                 {
1370                         tx->supercontents = mod_q1bsp_texture_solid.supercontents;
1371                         tx->surfaceflags = mod_q1bsp_texture_solid.surfaceflags;
1372                 }
1373                 tx->currentframe = tx;
1374
1375                 // clear water settings
1376                 tx->reflectmin = 0;
1377                 tx->reflectmax = 1;
1378                 tx->refractfactor = 1;
1379                 Vector4Set(tx->refractcolor4f, 1, 1, 1, 1);
1380                 tx->reflectfactor = 1;
1381                 Vector4Set(tx->reflectcolor4f, 1, 1, 1, 1);
1382                 tx->r_water_wateralpha = 1;
1383         }
1384
1385         if (!m)
1386         {
1387                 Con_Printf("%s: no miptex lump to load textures from\n", loadmodel->name);
1388                 return;
1389         }
1390
1391         s = loadmodel->name;
1392         if (!strncasecmp(s, "maps/", 5))
1393                 s += 5;
1394         FS_StripExtension(s, mapname, sizeof(mapname));
1395
1396         // just to work around bounds checking when debugging with it (array index out of bounds error thing)
1397         dofs = m->dataofs;
1398         // LordHavoc: mostly rewritten map texture loader
1399         for (i = 0;i < m->nummiptex;i++)
1400         {
1401                 dofs[i] = LittleLong(dofs[i]);
1402                 if (r_nosurftextures.integer)
1403                         continue;
1404                 if (dofs[i] == -1)
1405                 {
1406                         Con_DPrintf("%s: miptex #%i missing\n", loadmodel->name, i);
1407                         continue;
1408                 }
1409                 dmiptex = (miptex_t *)((unsigned char *)m + dofs[i]);
1410
1411                 // copy name, but only up to 16 characters
1412                 // (the output buffer can hold more than this, but the input buffer is
1413                 //  only 16)
1414                 for (j = 0;dmiptex->name[j] && j < 16;j++)
1415                         name[j] = dmiptex->name[j];
1416                 name[j] = 0;
1417
1418                 if (!name[0])
1419                 {
1420                         sprintf(name, "unnamed%i", i);
1421                         Con_DPrintf("%s: warning: renaming unnamed texture to %s\n", loadmodel->name, name);
1422                 }
1423
1424                 mtwidth = LittleLong(dmiptex->width);
1425                 mtheight = LittleLong(dmiptex->height);
1426                 mtdata = NULL;
1427                 j = LittleLong(dmiptex->offsets[0]);
1428                 if (j)
1429                 {
1430                         // texture included
1431                         if (j < 40 || j + mtwidth * mtheight > l->filelen)
1432                         {
1433                                 Con_Printf("%s: Texture \"%s\" is corrupt or incomplete\n", loadmodel->name, dmiptex->name);
1434                                 continue;
1435                         }
1436                         mtdata = (unsigned char *)dmiptex + j;
1437                 }
1438
1439                 if ((mtwidth & 15) || (mtheight & 15))
1440                         Con_DPrintf("%s: warning: texture \"%s\" is not 16 aligned\n", loadmodel->name, dmiptex->name);
1441
1442                 // LordHavoc: force all names to lowercase
1443                 for (j = 0;name[j];j++)
1444                         if (name[j] >= 'A' && name[j] <= 'Z')
1445                                 name[j] += 'a' - 'A';
1446
1447                 if (dmiptex->name[0] && Mod_LoadTextureFromQ3Shader(loadmodel->data_textures + i, name, false, false, 0))
1448                         continue;
1449
1450                 tx = loadmodel->data_textures + i;
1451                 strlcpy(tx->name, name, sizeof(tx->name));
1452                 tx->width = mtwidth;
1453                 tx->height = mtheight;
1454
1455                 if (tx->name[0] == '*')
1456                 {
1457                         if (!strncmp(tx->name, "*lava", 5))
1458                         {
1459                                 tx->supercontents = mod_q1bsp_texture_lava.supercontents;
1460                                 tx->surfaceflags = mod_q1bsp_texture_lava.surfaceflags;
1461                         }
1462                         else if (!strncmp(tx->name, "*slime", 6))
1463                         {
1464                                 tx->supercontents = mod_q1bsp_texture_slime.supercontents;
1465                                 tx->surfaceflags = mod_q1bsp_texture_slime.surfaceflags;
1466                         }
1467                         else
1468                         {
1469                                 tx->supercontents = mod_q1bsp_texture_water.supercontents;
1470                                 tx->surfaceflags = mod_q1bsp_texture_water.surfaceflags;
1471                         }
1472                 }
1473                 else if (!strncmp(tx->name, "sky", 3))
1474                 {
1475                         tx->supercontents = mod_q1bsp_texture_sky.supercontents;
1476                         tx->surfaceflags = mod_q1bsp_texture_sky.surfaceflags;
1477                 }
1478                 else
1479                 {
1480                         tx->supercontents = mod_q1bsp_texture_solid.supercontents;
1481                         tx->surfaceflags = mod_q1bsp_texture_solid.surfaceflags;
1482                 }
1483
1484                 if (cls.state != ca_dedicated)
1485                 {
1486                         // LordHavoc: HL sky textures are entirely different than quake
1487                         if (!loadmodel->brush.ishlbsp && !strncmp(tx->name, "sky", 3) && mtwidth == 256 && mtheight == 128)
1488                         {
1489                                 if (loadmodel->isworldmodel)
1490                                 {
1491                                         data = loadimagepixelsbgra(tx->name, false, false);
1492                                         if (data && image_width == 256 && image_height == 128)
1493                                         {
1494                                                 R_Q1BSP_LoadSplitSky(data, image_width, image_height, 4);
1495                                                 Mem_Free(data);
1496                                         }
1497                                         else if (mtdata != NULL)
1498                                                 R_Q1BSP_LoadSplitSky(mtdata, mtwidth, mtheight, 1);
1499                                 }
1500                         }
1501                         else
1502                         {
1503                                 skinframe = R_SkinFrame_LoadExternal(gamemode == GAME_TENEBRAE ? tx->name : va("textures/%s/%s", mapname, tx->name), TEXF_MIPMAP | TEXF_ALPHA | TEXF_PRECACHE | (r_picmipworld.integer ? TEXF_PICMIP : 0) | TEXF_COMPRESS, false);
1504                                 if (!skinframe)
1505                                         skinframe = R_SkinFrame_LoadExternal(gamemode == GAME_TENEBRAE ? tx->name : va("textures/%s", tx->name), TEXF_MIPMAP | TEXF_ALPHA | TEXF_PRECACHE | (r_picmipworld.integer ? TEXF_PICMIP : 0) | TEXF_COMPRESS, false);
1506                                 if (!skinframe)
1507                                 {
1508                                         // did not find external texture, load it from the bsp or wad3
1509                                         if (loadmodel->brush.ishlbsp)
1510                                         {
1511                                                 // internal texture overrides wad
1512                                                 unsigned char *pixels, *freepixels;
1513                                                 pixels = freepixels = NULL;
1514                                                 if (mtdata)
1515                                                         pixels = W_ConvertWAD3TextureBGRA(dmiptex);
1516                                                 if (pixels == NULL)
1517                                                         pixels = freepixels = W_GetTextureBGRA(tx->name);
1518                                                 if (pixels != NULL)
1519                                                 {
1520                                                         tx->width = image_width;
1521                                                         tx->height = image_height;
1522                                                         skinframe = R_SkinFrame_LoadInternalBGRA(tx->name, TEXF_MIPMAP | TEXF_ALPHA | TEXF_PRECACHE | (r_picmipworld.integer ? TEXF_PICMIP : 0), pixels, image_width, image_height);
1523                                                 }
1524                                                 if (freepixels)
1525                                                         Mem_Free(freepixels);
1526                                         }
1527                                         else if (mtdata) // texture included
1528                                                 skinframe = R_SkinFrame_LoadInternalQuake(tx->name, TEXF_MIPMAP | TEXF_PRECACHE | (r_picmipworld.integer ? TEXF_PICMIP : 0), false, r_fullbrights.integer, mtdata, tx->width, tx->height);
1529                                 }
1530                                 // if skinframe is still NULL the "missing" texture will be used
1531                                 if (skinframe)
1532                                         tx->skinframes[0] = skinframe;
1533                         }
1534
1535                         tx->basematerialflags = MATERIALFLAG_WALL;
1536                         if (tx->name[0] == '*')
1537                         {
1538                                 // LordHavoc: some turbulent textures should not be affected by wateralpha
1539                                 if (!strncmp(tx->name, "*glassmirror", 12)) // Tenebrae
1540                                 {
1541                                         // replace the texture with transparent black
1542                                         Vector4Set(zero, 128, 128, 128, 128);
1543                                         tx->skinframes[0] = R_SkinFrame_LoadInternalBGRA(tx->name, TEXF_MIPMAP | TEXF_PRECACHE | TEXF_ALPHA, zero, 1, 1);
1544                                         tx->basematerialflags |= MATERIALFLAG_NOSHADOW | MATERIALFLAG_ADD | MATERIALFLAG_BLENDED | MATERIALFLAG_REFLECTION;
1545                                 }
1546                                 else if (!strncmp(tx->name,"*lava",5)
1547                                  || !strncmp(tx->name,"*teleport",9)
1548                                  || !strncmp(tx->name,"*rift",5)) // Scourge of Armagon texture
1549                                         tx->basematerialflags |= MATERIALFLAG_WATERSCROLL | MATERIALFLAG_LIGHTBOTHSIDES | MATERIALFLAG_NOSHADOW;
1550                                 else
1551                                         tx->basematerialflags |= MATERIALFLAG_WATERSCROLL | MATERIALFLAG_LIGHTBOTHSIDES | MATERIALFLAG_NOSHADOW | MATERIALFLAG_WATERALPHA | MATERIALFLAG_WATERSHADER;
1552                                 if (tx->skinframes[0] && tx->skinframes[0]->fog)
1553                                         tx->basematerialflags |= MATERIALFLAG_ALPHA | MATERIALFLAG_BLENDED | MATERIALFLAG_NOSHADOW;
1554                         }
1555                         else if (!strncmp(tx->name, "mirror", 6)) // Tenebrae
1556                         {
1557                                 // replace the texture with black
1558                                 tx->skinframes[0] = R_SkinFrame_LoadInternalBGRA(tx->name, TEXF_PRECACHE, zero, 1, 1);
1559                                 tx->basematerialflags |= MATERIALFLAG_REFLECTION;
1560                         }
1561                         else if (!strncmp(tx->name, "sky", 3))
1562                                 tx->basematerialflags = MATERIALFLAG_SKY | MATERIALFLAG_NOSHADOW;
1563                         else if (!strcmp(tx->name, "caulk"))
1564                                 tx->basematerialflags = MATERIALFLAG_NODRAW;
1565                         else if (tx->skinframes[0] && tx->skinframes[0]->fog)
1566                                 tx->basematerialflags |= MATERIALFLAG_ALPHA | MATERIALFLAG_BLENDED | MATERIALFLAG_NOSHADOW;
1567
1568                         // start out with no animation
1569                         tx->currentframe = tx;
1570                         tx->currentskinframe = tx->skinframes[0];
1571                 }
1572         }
1573
1574         // sequence the animations
1575         for (i = 0;i < m->nummiptex;i++)
1576         {
1577                 tx = loadmodel->data_textures + i;
1578                 if (!tx || tx->name[0] != '+' || tx->name[1] == 0 || tx->name[2] == 0)
1579                         continue;
1580                 if (tx->anim_total[0] || tx->anim_total[1])
1581                         continue;       // already sequenced
1582
1583                 // find the number of frames in the animation
1584                 memset(anims, 0, sizeof(anims));
1585                 memset(altanims, 0, sizeof(altanims));
1586
1587                 for (j = i;j < m->nummiptex;j++)
1588                 {
1589                         tx2 = loadmodel->data_textures + j;
1590                         if (!tx2 || tx2->name[0] != '+' || strcmp(tx2->name+2, tx->name+2))
1591                                 continue;
1592
1593                         num = tx2->name[1];
1594                         if (num >= '0' && num <= '9')
1595                                 anims[num - '0'] = tx2;
1596                         else if (num >= 'a' && num <= 'j')
1597                                 altanims[num - 'a'] = tx2;
1598                         else
1599                                 Con_Printf("Bad animating texture %s\n", tx->name);
1600                 }
1601
1602                 max = altmax = 0;
1603                 for (j = 0;j < 10;j++)
1604                 {
1605                         if (anims[j])
1606                                 max = j + 1;
1607                         if (altanims[j])
1608                                 altmax = j + 1;
1609                 }
1610                 //Con_Printf("linking animation %s (%i:%i frames)\n\n", tx->name, max, altmax);
1611
1612                 incomplete = false;
1613                 for (j = 0;j < max;j++)
1614                 {
1615                         if (!anims[j])
1616                         {
1617                                 Con_Printf("Missing frame %i of %s\n", j, tx->name);
1618                                 incomplete = true;
1619                         }
1620                 }
1621                 for (j = 0;j < altmax;j++)
1622                 {
1623                         if (!altanims[j])
1624                         {
1625                                 Con_Printf("Missing altframe %i of %s\n", j, tx->name);
1626                                 incomplete = true;
1627                         }
1628                 }
1629                 if (incomplete)
1630                         continue;
1631
1632                 if (altmax < 1)
1633                 {
1634                         // if there is no alternate animation, duplicate the primary
1635                         // animation into the alternate
1636                         altmax = max;
1637                         for (k = 0;k < 10;k++)
1638                                 altanims[k] = anims[k];
1639                 }
1640
1641                 // link together the primary animation
1642                 for (j = 0;j < max;j++)
1643                 {
1644                         tx2 = anims[j];
1645                         tx2->animated = true;
1646                         tx2->anim_total[0] = max;
1647                         tx2->anim_total[1] = altmax;
1648                         for (k = 0;k < 10;k++)
1649                         {
1650                                 tx2->anim_frames[0][k] = anims[k];
1651                                 tx2->anim_frames[1][k] = altanims[k];
1652                         }
1653                 }
1654
1655                 // if there really is an alternate anim...
1656                 if (anims[0] != altanims[0])
1657                 {
1658                         // link together the alternate animation
1659                         for (j = 0;j < altmax;j++)
1660                         {
1661                                 tx2 = altanims[j];
1662                                 tx2->animated = true;
1663                                 // the primary/alternate are reversed here
1664                                 tx2->anim_total[0] = altmax;
1665                                 tx2->anim_total[1] = max;
1666                                 for (k = 0;k < 10;k++)
1667                                 {
1668                                         tx2->anim_frames[0][k] = altanims[k];
1669                                         tx2->anim_frames[1][k] = anims[k];
1670                                 }
1671                         }
1672                 }
1673         }
1674 }
1675
1676 static void Mod_Q1BSP_LoadLighting(lump_t *l)
1677 {
1678         int i;
1679         unsigned char *in, *out, *data, d;
1680         char litfilename[MAX_QPATH];
1681         char dlitfilename[MAX_QPATH];
1682         fs_offset_t filesize;
1683         if (loadmodel->brush.ishlbsp) // LordHavoc: load the colored lighting data straight
1684         {
1685                 loadmodel->brushq1.lightdata = (unsigned char *)Mem_Alloc(loadmodel->mempool, l->filelen);
1686                 for (i=0; i<l->filelen; i++)
1687                         loadmodel->brushq1.lightdata[i] = mod_base[l->fileofs+i] >>= 1;
1688         }
1689         else // LordHavoc: bsp version 29 (normal white lighting)
1690         {
1691                 // LordHavoc: hope is not lost yet, check for a .lit file to load
1692                 strlcpy (litfilename, loadmodel->name, sizeof (litfilename));
1693                 FS_StripExtension (litfilename, litfilename, sizeof (litfilename));
1694                 strlcpy (dlitfilename, litfilename, sizeof (dlitfilename));
1695                 strlcat (litfilename, ".lit", sizeof (litfilename));
1696                 strlcat (dlitfilename, ".dlit", sizeof (dlitfilename));
1697                 data = (unsigned char*) FS_LoadFile(litfilename, tempmempool, false, &filesize);
1698                 if (data)
1699                 {
1700                         if (filesize == (fs_offset_t)(8 + l->filelen * 3) && data[0] == 'Q' && data[1] == 'L' && data[2] == 'I' && data[3] == 'T')
1701                         {
1702                                 i = LittleLong(((int *)data)[1]);
1703                                 if (i == 1)
1704                                 {
1705                                         if (developer_loading.integer)
1706                                                 Con_Printf("loaded %s\n", litfilename);
1707                                         loadmodel->brushq1.lightdata = (unsigned char *)Mem_Alloc(loadmodel->mempool, filesize - 8);
1708                                         memcpy(loadmodel->brushq1.lightdata, data + 8, filesize - 8);
1709                                         Mem_Free(data);
1710                                         data = (unsigned char*) FS_LoadFile(dlitfilename, tempmempool, false, &filesize);
1711                                         if (data)
1712                                         {
1713                                                 if (filesize == (fs_offset_t)(8 + l->filelen * 3) && data[0] == 'Q' && data[1] == 'L' && data[2] == 'I' && data[3] == 'T')
1714                                                 {
1715                                                         i = LittleLong(((int *)data)[1]);
1716                                                         if (i == 1)
1717                                                         {
1718                                                                 if (developer_loading.integer)
1719                                                                         Con_Printf("loaded %s\n", dlitfilename);
1720                                                                 loadmodel->brushq1.nmaplightdata = (unsigned char *)Mem_Alloc(loadmodel->mempool, filesize - 8);
1721                                                                 memcpy(loadmodel->brushq1.nmaplightdata, data + 8, filesize - 8);
1722                                                                 loadmodel->brushq3.deluxemapping_modelspace = false;
1723                                                                 loadmodel->brushq3.deluxemapping = true;
1724                                                         }
1725                                                 }
1726                                                 Mem_Free(data);
1727                                                 data = NULL;
1728                                         }
1729                                         return;
1730                                 }
1731                                 else
1732                                         Con_Printf("Unknown .lit file version (%d)\n", i);
1733                         }
1734                         else if (filesize == 8)
1735                                 Con_Print("Empty .lit file, ignoring\n");
1736                         else
1737                                 Con_Printf("Corrupt .lit file (file size %i bytes, should be %i bytes), ignoring\n", (int) filesize, (int) (8 + l->filelen * 3));
1738                         if (data)
1739                         {
1740                                 Mem_Free(data);
1741                                 data = NULL;
1742                         }
1743                 }
1744                 // LordHavoc: oh well, expand the white lighting data
1745                 if (!l->filelen)
1746                         return;
1747                 loadmodel->brushq1.lightdata = (unsigned char *)Mem_Alloc(loadmodel->mempool, l->filelen*3);
1748                 in = mod_base + l->fileofs;
1749                 out = loadmodel->brushq1.lightdata;
1750                 for (i = 0;i < l->filelen;i++)
1751                 {
1752                         d = *in++;
1753                         *out++ = d;
1754                         *out++ = d;
1755                         *out++ = d;
1756                 }
1757         }
1758 }
1759
1760 static void Mod_Q1BSP_LoadVisibility(lump_t *l)
1761 {
1762         loadmodel->brushq1.num_compressedpvs = 0;
1763         loadmodel->brushq1.data_compressedpvs = NULL;
1764         if (!l->filelen)
1765                 return;
1766         loadmodel->brushq1.num_compressedpvs = l->filelen;
1767         loadmodel->brushq1.data_compressedpvs = (unsigned char *)Mem_Alloc(loadmodel->mempool, l->filelen);
1768         memcpy(loadmodel->brushq1.data_compressedpvs, mod_base + l->fileofs, l->filelen);
1769 }
1770
1771 // used only for HalfLife maps
1772 static void Mod_Q1BSP_ParseWadsFromEntityLump(const char *data)
1773 {
1774         char key[128], value[4096];
1775         char wadname[128];
1776         int i, j, k;
1777         if (!data)
1778                 return;
1779         if (!COM_ParseToken_Simple(&data, false, false))
1780                 return; // error
1781         if (com_token[0] != '{')
1782                 return; // error
1783         while (1)
1784         {
1785                 if (!COM_ParseToken_Simple(&data, false, false))
1786                         return; // error
1787                 if (com_token[0] == '}')
1788                         break; // end of worldspawn
1789                 if (com_token[0] == '_')
1790                         strlcpy(key, com_token + 1, sizeof(key));
1791                 else
1792                         strlcpy(key, com_token, sizeof(key));
1793                 while (key[strlen(key)-1] == ' ') // remove trailing spaces
1794                         key[strlen(key)-1] = 0;
1795                 if (!COM_ParseToken_Simple(&data, false, false))
1796                         return; // error
1797                 dpsnprintf(value, sizeof(value), "%s", com_token);
1798                 if (!strcmp("wad", key)) // for HalfLife maps
1799                 {
1800                         if (loadmodel->brush.ishlbsp)
1801                         {
1802                                 j = 0;
1803                                 for (i = 0;i < (int)sizeof(value);i++)
1804                                         if (value[i] != ';' && value[i] != '\\' && value[i] != '/' && value[i] != ':')
1805                                                 break;
1806                                 if (value[i])
1807                                 {
1808                                         for (;i < (int)sizeof(value);i++)
1809                                         {
1810                                                 // ignore path - the \\ check is for HalfLife... stupid windoze 'programmers'...
1811                                                 if (value[i] == '\\' || value[i] == '/' || value[i] == ':')
1812                                                         j = i+1;
1813                                                 else if (value[i] == ';' || value[i] == 0)
1814                                                 {
1815                                                         k = value[i];
1816                                                         value[i] = 0;
1817                                                         strlcpy(wadname, "textures/", sizeof(wadname));
1818                                                         strlcat(wadname, &value[j], sizeof(wadname));
1819                                                         W_LoadTextureWadFile(wadname, false);
1820                                                         j = i+1;
1821                                                         if (!k)
1822                                                                 break;
1823                                                 }
1824                                         }
1825                                 }
1826                         }
1827                 }
1828         }
1829 }
1830
1831 static void Mod_Q1BSP_LoadEntities(lump_t *l)
1832 {
1833         loadmodel->brush.entities = NULL;
1834         if (!l->filelen)
1835                 return;
1836         loadmodel->brush.entities = (char *)Mem_Alloc(loadmodel->mempool, l->filelen);
1837         memcpy(loadmodel->brush.entities, mod_base + l->fileofs, l->filelen);
1838         if (loadmodel->brush.ishlbsp)
1839                 Mod_Q1BSP_ParseWadsFromEntityLump(loadmodel->brush.entities);
1840 }
1841
1842
1843 static void Mod_Q1BSP_LoadVertexes(lump_t *l)
1844 {
1845         dvertex_t       *in;
1846         mvertex_t       *out;
1847         int                     i, count;
1848
1849         in = (dvertex_t *)(mod_base + l->fileofs);
1850         if (l->filelen % sizeof(*in))
1851                 Host_Error("Mod_Q1BSP_LoadVertexes: funny lump size in %s",loadmodel->name);
1852         count = l->filelen / sizeof(*in);
1853         out = (mvertex_t *)Mem_Alloc(loadmodel->mempool, count*sizeof(*out));
1854
1855         loadmodel->brushq1.vertexes = out;
1856         loadmodel->brushq1.numvertexes = count;
1857
1858         for ( i=0 ; i<count ; i++, in++, out++)
1859         {
1860                 out->position[0] = LittleFloat(in->point[0]);
1861                 out->position[1] = LittleFloat(in->point[1]);
1862                 out->position[2] = LittleFloat(in->point[2]);
1863         }
1864 }
1865
1866 // The following two functions should be removed and MSG_* or SZ_* function sets adjusted so they
1867 // can be used for this
1868 // REMOVEME
1869 int SB_ReadInt (unsigned char **buffer)
1870 {
1871         int     i;
1872         i = ((*buffer)[0]) + 256*((*buffer)[1]) + 65536*((*buffer)[2]) + 16777216*((*buffer)[3]);
1873         (*buffer) += 4;
1874         return i;
1875 }
1876
1877 // REMOVEME
1878 float SB_ReadFloat (unsigned char **buffer)
1879 {
1880         union
1881         {
1882                 int             i;
1883                 float   f;
1884         } u;
1885
1886         u.i = SB_ReadInt (buffer);
1887         return u.f;
1888 }
1889
1890 static void Mod_Q1BSP_LoadSubmodels(lump_t *l, hullinfo_t *hullinfo)
1891 {
1892         unsigned char           *index;
1893         dmodel_t        *out;
1894         int                     i, j, count;
1895
1896         index = (unsigned char *)(mod_base + l->fileofs);
1897         if (l->filelen % (48+4*hullinfo->filehulls))
1898                 Host_Error ("Mod_Q1BSP_LoadSubmodels: funny lump size in %s", loadmodel->name);
1899
1900         count = l->filelen / (48+4*hullinfo->filehulls);
1901         out = (dmodel_t *)Mem_Alloc (loadmodel->mempool, count*sizeof(*out));
1902
1903         loadmodel->brushq1.submodels = out;
1904         loadmodel->brush.numsubmodels = count;
1905
1906         for (i = 0; i < count; i++, out++)
1907         {
1908         // spread out the mins / maxs by a pixel
1909                 out->mins[0] = SB_ReadFloat (&index) - 1;
1910                 out->mins[1] = SB_ReadFloat (&index) - 1;
1911                 out->mins[2] = SB_ReadFloat (&index) - 1;
1912                 out->maxs[0] = SB_ReadFloat (&index) + 1;
1913                 out->maxs[1] = SB_ReadFloat (&index) + 1;
1914                 out->maxs[2] = SB_ReadFloat (&index) + 1;
1915                 out->origin[0] = SB_ReadFloat (&index);
1916                 out->origin[1] = SB_ReadFloat (&index);
1917                 out->origin[2] = SB_ReadFloat (&index);
1918                 for (j = 0; j < hullinfo->filehulls; j++)
1919                         out->headnode[j] = SB_ReadInt (&index);
1920                 out->visleafs = SB_ReadInt (&index);
1921                 out->firstface = SB_ReadInt (&index);
1922                 out->numfaces = SB_ReadInt (&index);
1923         }
1924 }
1925
1926 static void Mod_Q1BSP_LoadEdges(lump_t *l)
1927 {
1928         dedge_t *in;
1929         medge_t *out;
1930         int     i, count;
1931
1932         in = (dedge_t *)(mod_base + l->fileofs);
1933         if (l->filelen % sizeof(*in))
1934                 Host_Error("Mod_Q1BSP_LoadEdges: funny lump size in %s",loadmodel->name);
1935         count = l->filelen / sizeof(*in);
1936         out = (medge_t *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
1937
1938         loadmodel->brushq1.edges = out;
1939         loadmodel->brushq1.numedges = count;
1940
1941         for ( i=0 ; i<count ; i++, in++, out++)
1942         {
1943                 out->v[0] = (unsigned short)LittleShort(in->v[0]);
1944                 out->v[1] = (unsigned short)LittleShort(in->v[1]);
1945                 if (out->v[0] >= loadmodel->brushq1.numvertexes || out->v[1] >= loadmodel->brushq1.numvertexes)
1946                 {
1947                         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);
1948                         out->v[0] = 0;
1949                         out->v[1] = 0;
1950                 }
1951         }
1952 }
1953
1954 static void Mod_Q1BSP_LoadTexinfo(lump_t *l)
1955 {
1956         texinfo_t *in;
1957         mtexinfo_t *out;
1958         int i, j, k, count, miptex;
1959
1960         in = (texinfo_t *)(mod_base + l->fileofs);
1961         if (l->filelen % sizeof(*in))
1962                 Host_Error("Mod_Q1BSP_LoadTexinfo: funny lump size in %s",loadmodel->name);
1963         count = l->filelen / sizeof(*in);
1964         out = (mtexinfo_t *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
1965
1966         loadmodel->brushq1.texinfo = out;
1967         loadmodel->brushq1.numtexinfo = count;
1968
1969         for (i = 0;i < count;i++, in++, out++)
1970         {
1971                 for (k = 0;k < 2;k++)
1972                         for (j = 0;j < 4;j++)
1973                                 out->vecs[k][j] = LittleFloat(in->vecs[k][j]);
1974
1975                 miptex = LittleLong(in->miptex);
1976                 out->flags = LittleLong(in->flags);
1977
1978                 out->texture = NULL;
1979                 if (loadmodel->data_textures)
1980                 {
1981                         if ((unsigned int) miptex >= (unsigned int) loadmodel->num_textures)
1982                                 Con_Printf("error in model \"%s\": invalid miptex index %i(of %i)\n", loadmodel->name, miptex, loadmodel->num_textures);
1983                         else
1984                                 out->texture = loadmodel->data_textures + miptex;
1985                 }
1986                 if (out->flags & TEX_SPECIAL)
1987                 {
1988                         // if texture chosen is NULL or the shader needs a lightmap,
1989                         // force to notexture water shader
1990                         if (out->texture == NULL)
1991                                 out->texture = loadmodel->data_textures + (loadmodel->num_textures - 1);
1992                 }
1993                 else
1994                 {
1995                         // if texture chosen is NULL, force to notexture
1996                         if (out->texture == NULL)
1997                                 out->texture = loadmodel->data_textures + (loadmodel->num_textures - 2);
1998                 }
1999         }
2000 }
2001
2002 #if 0
2003 void BoundPoly(int numverts, float *verts, vec3_t mins, vec3_t maxs)
2004 {
2005         int             i, j;
2006         float   *v;
2007
2008         mins[0] = mins[1] = mins[2] = 9999;
2009         maxs[0] = maxs[1] = maxs[2] = -9999;
2010         v = verts;
2011         for (i = 0;i < numverts;i++)
2012         {
2013                 for (j = 0;j < 3;j++, v++)
2014                 {
2015                         if (*v < mins[j])
2016                                 mins[j] = *v;
2017                         if (*v > maxs[j])
2018                                 maxs[j] = *v;
2019                 }
2020         }
2021 }
2022
2023 #define MAX_SUBDIVPOLYTRIANGLES 4096
2024 #define MAX_SUBDIVPOLYVERTS(MAX_SUBDIVPOLYTRIANGLES * 3)
2025
2026 static int subdivpolyverts, subdivpolytriangles;
2027 static int subdivpolyindex[MAX_SUBDIVPOLYTRIANGLES][3];
2028 static float subdivpolyvert[MAX_SUBDIVPOLYVERTS][3];
2029
2030 static int subdivpolylookupvert(vec3_t v)
2031 {
2032         int i;
2033         for (i = 0;i < subdivpolyverts;i++)
2034                 if (subdivpolyvert[i][0] == v[0]
2035                  && subdivpolyvert[i][1] == v[1]
2036                  && subdivpolyvert[i][2] == v[2])
2037                         return i;
2038         if (subdivpolyverts >= MAX_SUBDIVPOLYVERTS)
2039                 Host_Error("SubDividePolygon: ran out of vertices in buffer, please increase your r_subdivide_size");
2040         VectorCopy(v, subdivpolyvert[subdivpolyverts]);
2041         return subdivpolyverts++;
2042 }
2043
2044 static void SubdividePolygon(int numverts, float *verts)
2045 {
2046         int             i, i1, i2, i3, f, b, c, p;
2047         vec3_t  mins, maxs, front[256], back[256];
2048         float   m, *pv, *cv, dist[256], frac;
2049
2050         if (numverts > 250)
2051                 Host_Error("SubdividePolygon: ran out of verts in buffer");
2052
2053         BoundPoly(numverts, verts, mins, maxs);
2054
2055         for (i = 0;i < 3;i++)
2056         {
2057                 m = (mins[i] + maxs[i]) * 0.5;
2058                 m = r_subdivide_size.value * floor(m/r_subdivide_size.value + 0.5);
2059                 if (maxs[i] - m < 8)
2060                         continue;
2061                 if (m - mins[i] < 8)
2062                         continue;
2063
2064                 // cut it
2065                 for (cv = verts, c = 0;c < numverts;c++, cv += 3)
2066                         dist[c] = cv[i] - m;
2067
2068                 f = b = 0;
2069                 for (p = numverts - 1, c = 0, pv = verts + p * 3, cv = verts;c < numverts;p = c, c++, pv = cv, cv += 3)
2070                 {
2071                         if (dist[p] >= 0)
2072                         {
2073                                 VectorCopy(pv, front[f]);
2074                                 f++;
2075                         }
2076                         if (dist[p] <= 0)
2077                         {
2078                                 VectorCopy(pv, back[b]);
2079                                 b++;
2080                         }
2081                         if (dist[p] == 0 || dist[c] == 0)
2082                                 continue;
2083                         if ((dist[p] > 0) != (dist[c] > 0) )
2084                         {
2085                                 // clip point
2086                                 frac = dist[p] / (dist[p] - dist[c]);
2087                                 front[f][0] = back[b][0] = pv[0] + frac * (cv[0] - pv[0]);
2088                                 front[f][1] = back[b][1] = pv[1] + frac * (cv[1] - pv[1]);
2089                                 front[f][2] = back[b][2] = pv[2] + frac * (cv[2] - pv[2]);
2090                                 f++;
2091                                 b++;
2092                         }
2093                 }
2094
2095                 SubdividePolygon(f, front[0]);
2096                 SubdividePolygon(b, back[0]);
2097                 return;
2098         }
2099
2100         i1 = subdivpolylookupvert(verts);
2101         i2 = subdivpolylookupvert(verts + 3);
2102         for (i = 2;i < numverts;i++)
2103         {
2104                 if (subdivpolytriangles >= MAX_SUBDIVPOLYTRIANGLES)
2105                 {
2106                         Con_Print("SubdividePolygon: ran out of triangles in buffer, please increase your r_subdivide_size\n");
2107                         return;
2108                 }
2109
2110                 i3 = subdivpolylookupvert(verts + i * 3);
2111                 subdivpolyindex[subdivpolytriangles][0] = i1;
2112                 subdivpolyindex[subdivpolytriangles][1] = i2;
2113                 subdivpolyindex[subdivpolytriangles][2] = i3;
2114                 i2 = i3;
2115                 subdivpolytriangles++;
2116         }
2117 }
2118
2119 //Breaks a polygon up along axial 64 unit
2120 //boundaries so that turbulent and sky warps
2121 //can be done reasonably.
2122 static void Mod_Q1BSP_GenerateWarpMesh(msurface_t *surface)
2123 {
2124         int i, j;
2125         surfvertex_t *v;
2126         surfmesh_t *mesh;
2127
2128         subdivpolytriangles = 0;
2129         subdivpolyverts = 0;
2130         SubdividePolygon(surface->num_vertices, (surface->mesh->data_vertex3f + 3 * surface->num_firstvertex));
2131         if (subdivpolytriangles < 1)
2132                 Host_Error("Mod_Q1BSP_GenerateWarpMesh: no triangles?");
2133
2134         surface->mesh = mesh = Mem_Alloc(loadmodel->mempool, sizeof(surfmesh_t) + subdivpolytriangles * sizeof(int[3]) + subdivpolyverts * sizeof(surfvertex_t));
2135         mesh->num_vertices = subdivpolyverts;
2136         mesh->num_triangles = subdivpolytriangles;
2137         mesh->vertex = (surfvertex_t *)(mesh + 1);
2138         mesh->index = (int *)(mesh->vertex + mesh->num_vertices);
2139         memset(mesh->vertex, 0, mesh->num_vertices * sizeof(surfvertex_t));
2140
2141         for (i = 0;i < mesh->num_triangles;i++)
2142                 for (j = 0;j < 3;j++)
2143                         mesh->index[i*3+j] = subdivpolyindex[i][j];
2144
2145         for (i = 0, v = mesh->vertex;i < subdivpolyverts;i++, v++)
2146         {
2147                 VectorCopy(subdivpolyvert[i], v->v);
2148                 v->st[0] = DotProduct(v->v, surface->lightmapinfo->texinfo->vecs[0]);
2149                 v->st[1] = DotProduct(v->v, surface->lightmapinfo->texinfo->vecs[1]);
2150         }
2151 }
2152 #endif
2153
2154 /* Maximum size of a single LM */
2155 #define MAX_SINGLE_LM_SIZE    256
2156
2157 struct alloc_lm_row
2158 {
2159         int rowY;
2160         int currentX;
2161 };
2162
2163 struct alloc_lm_state
2164 {
2165         int currentY;
2166         struct alloc_lm_row rows[MAX_SINGLE_LM_SIZE];
2167 };
2168
2169 static void init_alloc_lm_state (struct alloc_lm_state* state)
2170 {
2171         int r;
2172
2173         state->currentY = 0;
2174         for (r = 0; r < MAX_SINGLE_LM_SIZE; r++)
2175         {
2176           state->rows[r].currentX = 0;
2177           state->rows[r].rowY = -1;
2178         }
2179 }
2180
2181 static qboolean Mod_Q1BSP_AllocLightmapBlock(struct alloc_lm_state* state, int totalwidth, int totalheight, int blockwidth, int blockheight, int *outx, int *outy)
2182 {
2183         struct alloc_lm_row* row;
2184         int r;
2185
2186         row = &(state->rows[blockheight]);
2187         if ((row->rowY < 0) || (row->currentX + blockwidth > totalwidth))
2188         {
2189                 if (state->currentY + blockheight <= totalheight)
2190                 {
2191                         row->rowY = state->currentY;
2192                         row->currentX = 0;
2193                         state->currentY += blockheight;
2194                 }
2195                 else
2196                 {
2197                         /* See if we can stuff the block into a higher row */
2198                         row = NULL;
2199                         for (r = blockheight; r < MAX_SINGLE_LM_SIZE; r++)
2200                         {
2201                                 if ((state->rows[r].rowY >= 0)
2202                                   && (state->rows[r].currentX + blockwidth <= totalwidth))
2203                                 {
2204                                         row = &(state->rows[r]);
2205                                         break;
2206                                 }
2207                         }
2208                         if (row == NULL) return false;
2209                 }
2210         }
2211         *outy = row->rowY;
2212         *outx = row->currentX;
2213         row->currentX += blockwidth;
2214
2215         return true;
2216 }
2217
2218 extern cvar_t gl_max_size;
2219 static void Mod_Q1BSP_LoadFaces(lump_t *l)
2220 {
2221         dface_t *in;
2222         msurface_t *surface;
2223         int i, j, count, surfacenum, planenum, smax, tmax, ssize, tsize, firstedge, numedges, totalverts, totaltris, lightmapnumber, lightmapsize, totallightmapsamples;
2224         float texmins[2], texmaxs[2], val;
2225         rtexture_t *lightmaptexture, *deluxemaptexture;
2226
2227         in = (dface_t *)(mod_base + l->fileofs);
2228         if (l->filelen % sizeof(*in))
2229                 Host_Error("Mod_Q1BSP_LoadFaces: funny lump size in %s",loadmodel->name);
2230         count = l->filelen / sizeof(*in);
2231         loadmodel->data_surfaces = (msurface_t *)Mem_Alloc(loadmodel->mempool, count*sizeof(msurface_t));
2232         loadmodel->data_surfaces_lightmapinfo = (msurface_lightmapinfo_t *)Mem_Alloc(loadmodel->mempool, count*sizeof(msurface_lightmapinfo_t));
2233
2234         loadmodel->num_surfaces = count;
2235
2236         totalverts = 0;
2237         totaltris = 0;
2238         for (surfacenum = 0, in = (dface_t *)(mod_base + l->fileofs);surfacenum < count;surfacenum++, in++)
2239         {
2240                 numedges = (unsigned short)LittleShort(in->numedges);
2241                 totalverts += numedges;
2242                 totaltris += numedges - 2;
2243         }
2244
2245         Mod_AllocSurfMesh(loadmodel->mempool, totalverts, totaltris, true, false, false);
2246
2247         lightmaptexture = NULL;
2248         deluxemaptexture = r_texture_blanknormalmap;
2249         lightmapnumber = 1;
2250         lightmapsize = max(256, gl_max_size.integer);
2251         totallightmapsamples = 0;
2252
2253         totalverts = 0;
2254         totaltris = 0;
2255         for (surfacenum = 0, in = (dface_t *)(mod_base + l->fileofs), surface = loadmodel->data_surfaces;surfacenum < count;surfacenum++, in++, surface++)
2256         {
2257                 surface->lightmapinfo = loadmodel->data_surfaces_lightmapinfo + surfacenum;
2258
2259                 // FIXME: validate edges, texinfo, etc?
2260                 firstedge = LittleLong(in->firstedge);
2261                 numedges = (unsigned short)LittleShort(in->numedges);
2262                 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)
2263                         Host_Error("Mod_Q1BSP_LoadFaces: invalid edge range (firstedge %i, numedges %i, model edges %i)", firstedge, numedges, loadmodel->brushq1.numsurfedges);
2264                 i = (unsigned short)LittleShort(in->texinfo);
2265                 if ((unsigned int) i >= (unsigned int) loadmodel->brushq1.numtexinfo)
2266                         Host_Error("Mod_Q1BSP_LoadFaces: invalid texinfo index %i(model has %i texinfos)", i, loadmodel->brushq1.numtexinfo);
2267                 surface->lightmapinfo->texinfo = loadmodel->brushq1.texinfo + i;
2268                 surface->texture = surface->lightmapinfo->texinfo->texture;
2269
2270                 planenum = (unsigned short)LittleShort(in->planenum);
2271                 if ((unsigned int) planenum >= (unsigned int) loadmodel->brush.num_planes)
2272                         Host_Error("Mod_Q1BSP_LoadFaces: invalid plane index %i (model has %i planes)", planenum, loadmodel->brush.num_planes);
2273
2274                 //surface->flags = surface->texture->flags;
2275                 //if (LittleShort(in->side))
2276                 //      surface->flags |= SURF_PLANEBACK;
2277                 //surface->plane = loadmodel->brush.data_planes + planenum;
2278
2279                 surface->num_firstvertex = totalverts;
2280                 surface->num_vertices = numedges;
2281                 surface->num_firsttriangle = totaltris;
2282                 surface->num_triangles = numedges - 2;
2283                 totalverts += numedges;
2284                 totaltris += numedges - 2;
2285
2286                 // convert edges back to a normal polygon
2287                 for (i = 0;i < surface->num_vertices;i++)
2288                 {
2289                         int lindex = loadmodel->brushq1.surfedges[firstedge + i];
2290                         float s, t;
2291                         if (lindex > 0)
2292                                 VectorCopy(loadmodel->brushq1.vertexes[loadmodel->brushq1.edges[lindex].v[0]].position, (loadmodel->surfmesh.data_vertex3f + 3 * surface->num_firstvertex) + i * 3);
2293                         else
2294                                 VectorCopy(loadmodel->brushq1.vertexes[loadmodel->brushq1.edges[-lindex].v[1]].position, (loadmodel->surfmesh.data_vertex3f + 3 * surface->num_firstvertex) + i * 3);
2295                         s = DotProduct(((loadmodel->surfmesh.data_vertex3f + 3 * surface->num_firstvertex) + i * 3), surface->lightmapinfo->texinfo->vecs[0]) + surface->lightmapinfo->texinfo->vecs[0][3];
2296                         t = DotProduct(((loadmodel->surfmesh.data_vertex3f + 3 * surface->num_firstvertex) + i * 3), surface->lightmapinfo->texinfo->vecs[1]) + surface->lightmapinfo->texinfo->vecs[1][3];
2297                         (loadmodel->surfmesh.data_texcoordtexture2f + 2 * surface->num_firstvertex)[i * 2 + 0] = s / surface->texture->width;
2298                         (loadmodel->surfmesh.data_texcoordtexture2f + 2 * surface->num_firstvertex)[i * 2 + 1] = t / surface->texture->height;
2299                         (loadmodel->surfmesh.data_texcoordlightmap2f + 2 * surface->num_firstvertex)[i * 2 + 0] = 0;
2300                         (loadmodel->surfmesh.data_texcoordlightmap2f + 2 * surface->num_firstvertex)[i * 2 + 1] = 0;
2301                         (loadmodel->surfmesh.data_lightmapoffsets + surface->num_firstvertex)[i] = 0;
2302                 }
2303
2304                 for (i = 0;i < surface->num_triangles;i++)
2305                 {
2306                         (loadmodel->surfmesh.data_element3i + 3 * surface->num_firsttriangle)[i * 3 + 0] = 0 + surface->num_firstvertex;
2307                         (loadmodel->surfmesh.data_element3i + 3 * surface->num_firsttriangle)[i * 3 + 1] = i + 1 + surface->num_firstvertex;
2308                         (loadmodel->surfmesh.data_element3i + 3 * surface->num_firsttriangle)[i * 3 + 2] = i + 2 + surface->num_firstvertex;
2309                 }
2310
2311                 // compile additional data about the surface geometry
2312                 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);
2313                 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);
2314                 BoxFromPoints(surface->mins, surface->maxs, surface->num_vertices, (loadmodel->surfmesh.data_vertex3f + 3 * surface->num_firstvertex));
2315
2316                 // generate surface extents information
2317                 texmins[0] = texmaxs[0] = DotProduct((loadmodel->surfmesh.data_vertex3f + 3 * surface->num_firstvertex), surface->lightmapinfo->texinfo->vecs[0]) + surface->lightmapinfo->texinfo->vecs[0][3];
2318                 texmins[1] = texmaxs[1] = DotProduct((loadmodel->surfmesh.data_vertex3f + 3 * surface->num_firstvertex), surface->lightmapinfo->texinfo->vecs[1]) + surface->lightmapinfo->texinfo->vecs[1][3];
2319                 for (i = 1;i < surface->num_vertices;i++)
2320                 {
2321                         for (j = 0;j < 2;j++)
2322                         {
2323                                 val = DotProduct((loadmodel->surfmesh.data_vertex3f + 3 * surface->num_firstvertex) + i * 3, surface->lightmapinfo->texinfo->vecs[j]) + surface->lightmapinfo->texinfo->vecs[j][3];
2324                                 texmins[j] = min(texmins[j], val);
2325                                 texmaxs[j] = max(texmaxs[j], val);
2326                         }
2327                 }
2328                 for (i = 0;i < 2;i++)
2329                 {
2330                         surface->lightmapinfo->texturemins[i] = (int) floor(texmins[i] / 16.0) * 16;
2331                         surface->lightmapinfo->extents[i] = (int) ceil(texmaxs[i] / 16.0) * 16 - surface->lightmapinfo->texturemins[i];
2332                 }
2333
2334                 smax = surface->lightmapinfo->extents[0] >> 4;
2335                 tmax = surface->lightmapinfo->extents[1] >> 4;
2336                 ssize = (surface->lightmapinfo->extents[0] >> 4) + 1;
2337                 tsize = (surface->lightmapinfo->extents[1] >> 4) + 1;
2338
2339                 // lighting info
2340                 for (i = 0;i < MAXLIGHTMAPS;i++)
2341                         surface->lightmapinfo->styles[i] = in->styles[i];
2342                 surface->lightmaptexture = NULL;
2343                 surface->deluxemaptexture = r_texture_blanknormalmap;
2344                 i = LittleLong(in->lightofs);
2345                 if (i == -1)
2346                 {
2347                         surface->lightmapinfo->samples = NULL;
2348                         // give non-lightmapped water a 1x white lightmap
2349                         if (surface->texture->name[0] == '*' && (surface->lightmapinfo->texinfo->flags & TEX_SPECIAL) && ssize <= 256 && tsize <= 256)
2350                         {
2351                                 surface->lightmapinfo->samples = (unsigned char *)Mem_Alloc(loadmodel->mempool, ssize * tsize * 3);
2352                                 surface->lightmapinfo->styles[0] = 0;
2353                                 memset(surface->lightmapinfo->samples, 128, ssize * tsize * 3);
2354                         }
2355                 }
2356                 else if (loadmodel->brush.ishlbsp) // LordHavoc: HalfLife map (bsp version 30)
2357                         surface->lightmapinfo->samples = loadmodel->brushq1.lightdata + i;
2358                 else // LordHavoc: white lighting (bsp version 29)
2359                 {
2360                         surface->lightmapinfo->samples = loadmodel->brushq1.lightdata + (i * 3);
2361                         if (loadmodel->brushq1.nmaplightdata)
2362                                 surface->lightmapinfo->nmapsamples = loadmodel->brushq1.nmaplightdata + (i * 3);
2363                 }
2364
2365                 // check if we should apply a lightmap to this
2366                 if (!(surface->lightmapinfo->texinfo->flags & TEX_SPECIAL) || surface->lightmapinfo->samples)
2367                 {
2368                         if (ssize > 256 || tsize > 256)
2369                                 Host_Error("Bad surface extents");
2370
2371                         if (lightmapsize < ssize)
2372                                 lightmapsize = ssize;
2373                         if (lightmapsize < tsize)
2374                                 lightmapsize = tsize;
2375
2376                         totallightmapsamples += ssize*tsize;
2377
2378                         // force lightmap upload on first time seeing the surface
2379                         //
2380                         // additionally this is used by the later code to see if a
2381                         // lightmap is needed on this surface (rather than duplicating the
2382                         // logic above)
2383                         surface->cached_dlight = true;
2384                 }
2385         }
2386
2387         // small maps (such as ammo boxes especially) don't need big lightmap
2388         // textures, so this code tries to guess a good size based on
2389         // totallightmapsamples (size of the lightmaps lump basically), as well as
2390         // trying to max out the gl_max_size if there is a lot of lightmap data to
2391         // store
2392         // additionally, never choose a lightmapsize that is smaller than the
2393         // largest surface encountered (as it would fail)
2394         i = lightmapsize;
2395         for (lightmapsize = 64; (lightmapsize < i) && (lightmapsize < gl_max_size.integer) && (totallightmapsamples > lightmapsize*lightmapsize); lightmapsize*=2)
2396                 ;
2397
2398         // now that we've decided the lightmap texture size, we can do the rest
2399         if (cls.state != ca_dedicated)
2400         {
2401                 struct alloc_lm_state allocState;
2402
2403                 for (surfacenum = 0, surface = loadmodel->data_surfaces;surfacenum < count;surfacenum++, surface++)
2404                 {
2405                         int i, iu, iv, lightmapx, lightmapy;
2406                         float u, v, ubase, vbase, uscale, vscale;
2407
2408                         smax = surface->lightmapinfo->extents[0] >> 4;
2409                         tmax = surface->lightmapinfo->extents[1] >> 4;
2410                         ssize = (surface->lightmapinfo->extents[0] >> 4) + 1;
2411                         tsize = (surface->lightmapinfo->extents[1] >> 4) + 1;
2412
2413                         if (!lightmaptexture || !Mod_Q1BSP_AllocLightmapBlock(&allocState, lightmapsize, lightmapsize, ssize, tsize, &lightmapx, &lightmapy))
2414                         {
2415                                 // allocate a texture pool if we need it
2416                                 if (loadmodel->texturepool == NULL)
2417                                         loadmodel->texturepool = R_AllocTexturePool();
2418                                 // could not find room, make a new lightmap
2419                                 lightmaptexture = R_LoadTexture2D(loadmodel->texturepool, va("lightmap%i", lightmapnumber), lightmapsize, lightmapsize, NULL, TEXTYPE_BGRA, TEXF_FORCELINEAR | TEXF_PRECACHE, NULL);
2420                                 if (loadmodel->brushq1.nmaplightdata)
2421                                         deluxemaptexture = R_LoadTexture2D(loadmodel->texturepool, va("deluxemap%i", lightmapnumber), lightmapsize, lightmapsize, NULL, TEXTYPE_BGRA, TEXF_FORCELINEAR | TEXF_PRECACHE, NULL);
2422                                 lightmapnumber++;
2423                                 init_alloc_lm_state (&allocState);
2424                                 Mod_Q1BSP_AllocLightmapBlock(&allocState, lightmapsize, lightmapsize, ssize, tsize, &lightmapx, &lightmapy);
2425                         }
2426                         surface->lightmaptexture = lightmaptexture;
2427                         surface->deluxemaptexture = deluxemaptexture;
2428                         surface->lightmapinfo->lightmaporigin[0] = lightmapx;
2429                         surface->lightmapinfo->lightmaporigin[1] = lightmapy;
2430
2431                         uscale = 1.0f / (float)lightmapsize;
2432                         vscale = 1.0f / (float)lightmapsize;
2433                         ubase = lightmapx * uscale;
2434                         vbase = lightmapy * vscale;
2435
2436                         for (i = 0;i < surface->num_vertices;i++)
2437                         {
2438                                 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);
2439                                 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);
2440                                 (loadmodel->surfmesh.data_texcoordlightmap2f + 2 * surface->num_firstvertex)[i * 2 + 0] = u * uscale + ubase;
2441                                 (loadmodel->surfmesh.data_texcoordlightmap2f + 2 * surface->num_firstvertex)[i * 2 + 1] = v * vscale + vbase;
2442                                 // LordHavoc: calc lightmap data offset for vertex lighting to use
2443                                 iu = (int) u;
2444                                 iv = (int) v;
2445                                 (loadmodel->surfmesh.data_lightmapoffsets + surface->num_firstvertex)[i] = (bound(0, iv, tmax) * ssize + bound(0, iu, smax)) * 3;
2446                         }
2447
2448                 }
2449
2450                 if (cl_stainmaps.integer)
2451                 {
2452                         // allocate stainmaps for permanent marks on walls
2453                         int stainmapsize = 0;
2454                         unsigned char *stainsamples = NULL;
2455                         for (surfacenum = 0, surface = loadmodel->data_surfaces;surfacenum < count;surfacenum++, surface++)
2456                         {
2457                                 ssize = (surface->lightmapinfo->extents[0] >> 4) + 1;
2458                                 tsize = (surface->lightmapinfo->extents[1] >> 4) + 1;
2459                                 stainmapsize += ssize * tsize * 3;
2460                         }
2461                         // allocate and clear to white
2462                         stainsamples = (unsigned char *)Mem_Alloc(loadmodel->mempool, stainmapsize);
2463                         memset(stainsamples, 255, stainmapsize);
2464                         // assign pointers
2465                         for (surfacenum = 0, surface = loadmodel->data_surfaces;surfacenum < count;surfacenum++, surface++)
2466                         {
2467                                 ssize = (surface->lightmapinfo->extents[0] >> 4) + 1;
2468                                 tsize = (surface->lightmapinfo->extents[1] >> 4) + 1;
2469                                 surface->lightmapinfo->stainsamples = stainsamples;
2470                                 stainsamples += ssize * tsize * 3;
2471                         }
2472                 }
2473         }
2474
2475         // generate ushort elements array if possible
2476         if (loadmodel->surfmesh.data_element3s)
2477                 for (i = 0;i < loadmodel->surfmesh.num_triangles*3;i++)
2478                         loadmodel->surfmesh.data_element3s[i] = loadmodel->surfmesh.data_element3i[i];
2479 }
2480
2481 static void Mod_Q1BSP_LoadNodes_RecursiveSetParent(mnode_t *node, mnode_t *parent)
2482 {
2483         //if (node->parent)
2484         //      Host_Error("Mod_Q1BSP_LoadNodes_RecursiveSetParent: runaway recursion");
2485         node->parent = parent;
2486         if (node->plane)
2487         {
2488                 // this is a node, recurse to children
2489                 Mod_Q1BSP_LoadNodes_RecursiveSetParent(node->children[0], node);
2490                 Mod_Q1BSP_LoadNodes_RecursiveSetParent(node->children[1], node);
2491                 // combine supercontents of children
2492                 node->combinedsupercontents = node->children[0]->combinedsupercontents | node->children[1]->combinedsupercontents;
2493         }
2494         else
2495         {
2496                 int j;
2497                 mleaf_t *leaf = (mleaf_t *)node;
2498                 // if this is a leaf, calculate supercontents mask from all collidable
2499                 // primitives in the leaf (brushes and collision surfaces)
2500                 // also flag if the leaf contains any collision surfaces
2501                 leaf->combinedsupercontents = 0;
2502                 // combine the supercontents values of all brushes in this leaf
2503                 for (j = 0;j < leaf->numleafbrushes;j++)
2504                         leaf->combinedsupercontents |= loadmodel->brush.data_brushes[leaf->firstleafbrush[j]].texture->supercontents;
2505                 // check if this leaf contains any collision surfaces (q3 patches)
2506                 for (j = 0;j < leaf->numleafsurfaces;j++)
2507                 {
2508                         msurface_t *surface = loadmodel->data_surfaces + leaf->firstleafsurface[j];
2509                         if (surface->num_collisiontriangles)
2510                         {
2511                                 leaf->containscollisionsurfaces = true;
2512                                 leaf->combinedsupercontents |= surface->texture->supercontents;
2513                         }
2514                 }
2515         }
2516 }
2517
2518 static void Mod_Q1BSP_LoadNodes(lump_t *l)
2519 {
2520         int                     i, j, count, p;
2521         dnode_t         *in;
2522         mnode_t         *out;
2523
2524         in = (dnode_t *)(mod_base + l->fileofs);
2525         if (l->filelen % sizeof(*in))
2526                 Host_Error("Mod_Q1BSP_LoadNodes: funny lump size in %s",loadmodel->name);
2527         count = l->filelen / sizeof(*in);
2528         out = (mnode_t *)Mem_Alloc(loadmodel->mempool, count*sizeof(*out));
2529
2530         loadmodel->brush.data_nodes = out;
2531         loadmodel->brush.num_nodes = count;
2532
2533         for ( i=0 ; i<count ; i++, in++, out++)
2534         {
2535                 for (j=0 ; j<3 ; j++)
2536                 {
2537                         out->mins[j] = LittleShort(in->mins[j]);
2538                         out->maxs[j] = LittleShort(in->maxs[j]);
2539                 }
2540
2541                 p = LittleLong(in->planenum);
2542                 out->plane = loadmodel->brush.data_planes + p;
2543
2544                 out->firstsurface = (unsigned short)LittleShort(in->firstface);
2545                 out->numsurfaces = (unsigned short)LittleShort(in->numfaces);
2546
2547                 for (j=0 ; j<2 ; j++)
2548                 {
2549                         // LordHavoc: this code supports broken bsp files produced by
2550                         // arguire qbsp which can produce more than 32768 nodes, any value
2551                         // below count is assumed to be a node number, any other value is
2552                         // assumed to be a leaf number
2553                         p = (unsigned short)LittleShort(in->children[j]);
2554                         if (p < count)
2555                         {
2556                                 if (p < loadmodel->brush.num_nodes)
2557                                         out->children[j] = loadmodel->brush.data_nodes + p;
2558                                 else
2559                                 {
2560                                         Con_Printf("Mod_Q1BSP_LoadNodes: invalid node index %i (file has only %i nodes)\n", p, loadmodel->brush.num_nodes);
2561                                         // map it to the solid leaf
2562                                         out->children[j] = (mnode_t *)loadmodel->brush.data_leafs;
2563                                 }
2564                         }
2565                         else
2566                         {
2567                                 // note this uses 65535 intentionally, -1 is leaf 0
2568                                 p = 65535 - p;
2569                                 if (p < loadmodel->brush.num_leafs)
2570                                         out->children[j] = (mnode_t *)(loadmodel->brush.data_leafs + p);
2571                                 else
2572                                 {
2573                                         Con_Printf("Mod_Q1BSP_LoadNodes: invalid leaf index %i (file has only %i leafs)\n", p, loadmodel->brush.num_leafs);
2574                                         // map it to the solid leaf
2575                                         out->children[j] = (mnode_t *)loadmodel->brush.data_leafs;
2576                                 }
2577                         }
2578                 }
2579         }
2580
2581         Mod_Q1BSP_LoadNodes_RecursiveSetParent(loadmodel->brush.data_nodes, NULL);      // sets nodes and leafs
2582 }
2583
2584 static void Mod_Q1BSP_LoadLeafs(lump_t *l)
2585 {
2586         dleaf_t *in;
2587         mleaf_t *out;
2588         int i, j, count, p;
2589
2590         in = (dleaf_t *)(mod_base + l->fileofs);
2591         if (l->filelen % sizeof(*in))
2592                 Host_Error("Mod_Q1BSP_LoadLeafs: funny lump size in %s",loadmodel->name);
2593         count = l->filelen / sizeof(*in);
2594         out = (mleaf_t *)Mem_Alloc(loadmodel->mempool, count*sizeof(*out));
2595
2596         loadmodel->brush.data_leafs = out;
2597         loadmodel->brush.num_leafs = count;
2598         // get visleafs from the submodel data
2599         loadmodel->brush.num_pvsclusters = loadmodel->brushq1.submodels[0].visleafs;
2600         loadmodel->brush.num_pvsclusterbytes = (loadmodel->brush.num_pvsclusters+7)>>3;
2601         loadmodel->brush.data_pvsclusters = (unsigned char *)Mem_Alloc(loadmodel->mempool, loadmodel->brush.num_pvsclusters * loadmodel->brush.num_pvsclusterbytes);
2602         memset(loadmodel->brush.data_pvsclusters, 0xFF, loadmodel->brush.num_pvsclusters * loadmodel->brush.num_pvsclusterbytes);
2603
2604         for ( i=0 ; i<count ; i++, in++, out++)
2605         {
2606                 for (j=0 ; j<3 ; j++)
2607                 {
2608                         out->mins[j] = LittleShort(in->mins[j]);
2609                         out->maxs[j] = LittleShort(in->maxs[j]);
2610                 }
2611
2612                 // FIXME: this function could really benefit from some error checking
2613
2614                 out->contents = LittleLong(in->contents);
2615
2616                 out->firstleafsurface = loadmodel->brush.data_leafsurfaces + (unsigned short)LittleShort(in->firstmarksurface);
2617                 out->numleafsurfaces = (unsigned short)LittleShort(in->nummarksurfaces);
2618                 if (out->firstleafsurface < 0 || (unsigned short)LittleShort(in->firstmarksurface) + out->numleafsurfaces > loadmodel->brush.num_leafsurfaces)
2619                 {
2620                         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);
2621                         out->firstleafsurface = NULL;
2622                         out->numleafsurfaces = 0;
2623                 }
2624
2625                 out->clusterindex = i - 1;
2626                 if (out->clusterindex >= loadmodel->brush.num_pvsclusters)
2627                         out->clusterindex = -1;
2628
2629                 p = LittleLong(in->visofs);
2630                 // ignore visofs errors on leaf 0 (solid)
2631                 if (p >= 0 && out->clusterindex >= 0)
2632                 {
2633                         if (p >= loadmodel->brushq1.num_compressedpvs)
2634                                 Con_Print("Mod_Q1BSP_LoadLeafs: invalid visofs\n");
2635                         else
2636                                 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);
2637                 }
2638
2639                 for (j = 0;j < 4;j++)
2640                         out->ambient_sound_level[j] = in->ambient_level[j];
2641
2642                 // FIXME: Insert caustics here
2643         }
2644 }
2645
2646 qboolean Mod_Q1BSP_CheckWaterAlphaSupport(void)
2647 {
2648         int i, j;
2649         mleaf_t *leaf;
2650         const unsigned char *pvs;
2651         // if there's no vis data, assume supported (because everything is visible all the time)
2652         if (!loadmodel->brush.data_pvsclusters)
2653                 return true;
2654         // check all liquid leafs to see if they can see into empty leafs, if any
2655         // can we can assume this map supports r_wateralpha
2656         for (i = 0, leaf = loadmodel->brush.data_leafs;i < loadmodel->brush.num_leafs;i++, leaf++)
2657         {
2658                 if ((leaf->contents == CONTENTS_WATER || leaf->contents == CONTENTS_SLIME) && leaf->clusterindex >= 0)
2659                 {
2660                         pvs = loadmodel->brush.data_pvsclusters + leaf->clusterindex * loadmodel->brush.num_pvsclusterbytes;
2661                         for (j = 0;j < loadmodel->brush.num_leafs;j++)
2662                                 if (CHECKPVSBIT(pvs, loadmodel->brush.data_leafs[j].clusterindex) && loadmodel->brush.data_leafs[j].contents == CONTENTS_EMPTY)
2663                                         return true;
2664                 }
2665         }
2666         return false;
2667 }
2668
2669 static void Mod_Q1BSP_LoadClipnodes(lump_t *l, hullinfo_t *hullinfo)
2670 {
2671         dclipnode_t *in;
2672         mclipnode_t *out;
2673         int                     i, count;
2674         hull_t          *hull;
2675
2676         in = (dclipnode_t *)(mod_base + l->fileofs);
2677         if (l->filelen % sizeof(*in))
2678                 Host_Error("Mod_Q1BSP_LoadClipnodes: funny lump size in %s",loadmodel->name);
2679         count = l->filelen / sizeof(*in);
2680         out = (mclipnode_t *)Mem_Alloc(loadmodel->mempool, count*sizeof(*out));
2681
2682         loadmodel->brushq1.clipnodes = out;
2683         loadmodel->brushq1.numclipnodes = count;
2684
2685         for (i = 1; i < MAX_MAP_HULLS; i++)
2686         {
2687                 hull = &loadmodel->brushq1.hulls[i];
2688                 hull->clipnodes = out;
2689                 hull->firstclipnode = 0;
2690                 hull->lastclipnode = count-1;
2691                 hull->planes = loadmodel->brush.data_planes;
2692                 hull->clip_mins[0] = hullinfo->hullsizes[i][0][0];
2693                 hull->clip_mins[1] = hullinfo->hullsizes[i][0][1];
2694                 hull->clip_mins[2] = hullinfo->hullsizes[i][0][2];
2695                 hull->clip_maxs[0] = hullinfo->hullsizes[i][1][0];
2696                 hull->clip_maxs[1] = hullinfo->hullsizes[i][1][1];
2697                 hull->clip_maxs[2] = hullinfo->hullsizes[i][1][2];
2698                 VectorSubtract(hull->clip_maxs, hull->clip_mins, hull->clip_size);
2699         }
2700
2701         for (i=0 ; i<count ; i++, out++, in++)
2702         {
2703                 out->planenum = LittleLong(in->planenum);
2704                 // LordHavoc: this code supports arguire qbsp's broken clipnodes indices (more than 32768 clipnodes), values above count are assumed to be contents values
2705                 out->children[0] = (unsigned short)LittleShort(in->children[0]);
2706                 out->children[1] = (unsigned short)LittleShort(in->children[1]);
2707                 if (out->children[0] >= count)
2708                         out->children[0] -= 65536;
2709                 if (out->children[1] >= count)
2710                         out->children[1] -= 65536;
2711                 if (out->planenum < 0 || out->planenum >= loadmodel->brush.num_planes)
2712                         Host_Error("Corrupt clipping hull(out of range planenum)");
2713         }
2714 }
2715
2716 //Duplicate the drawing hull structure as a clipping hull
2717 static void Mod_Q1BSP_MakeHull0(void)
2718 {
2719         mnode_t         *in;
2720         mclipnode_t *out;
2721         int                     i;
2722         hull_t          *hull;
2723
2724         hull = &loadmodel->brushq1.hulls[0];
2725
2726         in = loadmodel->brush.data_nodes;
2727         out = (mclipnode_t *)Mem_Alloc(loadmodel->mempool, loadmodel->brush.num_nodes * sizeof(*out));
2728
2729         hull->clipnodes = out;
2730         hull->firstclipnode = 0;
2731         hull->lastclipnode = loadmodel->brush.num_nodes - 1;
2732         hull->planes = loadmodel->brush.data_planes;
2733
2734         for (i = 0;i < loadmodel->brush.num_nodes;i++, out++, in++)
2735         {
2736                 out->planenum = in->plane - loadmodel->brush.data_planes;
2737                 out->children[0] = in->children[0]->plane ? in->children[0] - loadmodel->brush.data_nodes : ((mleaf_t *)in->children[0])->contents;
2738                 out->children[1] = in->children[1]->plane ? in->children[1] - loadmodel->brush.data_nodes : ((mleaf_t *)in->children[1])->contents;
2739         }
2740 }
2741
2742 static void Mod_Q1BSP_LoadLeaffaces(lump_t *l)
2743 {
2744         int i, j;
2745         short *in;
2746
2747         in = (short *)(mod_base + l->fileofs);
2748         if (l->filelen % sizeof(*in))
2749                 Host_Error("Mod_Q1BSP_LoadLeaffaces: funny lump size in %s",loadmodel->name);
2750         loadmodel->brush.num_leafsurfaces = l->filelen / sizeof(*in);
2751         loadmodel->brush.data_leafsurfaces = (int *)Mem_Alloc(loadmodel->mempool, loadmodel->brush.num_leafsurfaces * sizeof(int));
2752
2753         for (i = 0;i < loadmodel->brush.num_leafsurfaces;i++)
2754         {
2755                 j = (unsigned short) LittleShort(in[i]);
2756                 if (j >= loadmodel->num_surfaces)
2757                         Host_Error("Mod_Q1BSP_LoadLeaffaces: bad surface number");
2758                 loadmodel->brush.data_leafsurfaces[i] = j;
2759         }
2760 }
2761
2762 static void Mod_Q1BSP_LoadSurfedges(lump_t *l)
2763 {
2764         int             i;
2765         int             *in;
2766
2767         in = (int *)(mod_base + l->fileofs);
2768         if (l->filelen % sizeof(*in))
2769                 Host_Error("Mod_Q1BSP_LoadSurfedges: funny lump size in %s",loadmodel->name);
2770         loadmodel->brushq1.numsurfedges = l->filelen / sizeof(*in);
2771         loadmodel->brushq1.surfedges = (int *)Mem_Alloc(loadmodel->mempool, loadmodel->brushq1.numsurfedges * sizeof(int));
2772
2773         for (i = 0;i < loadmodel->brushq1.numsurfedges;i++)
2774                 loadmodel->brushq1.surfedges[i] = LittleLong(in[i]);
2775 }
2776
2777
2778 static void Mod_Q1BSP_LoadPlanes(lump_t *l)
2779 {
2780         int                     i;
2781         mplane_t        *out;
2782         dplane_t        *in;
2783
2784         in = (dplane_t *)(mod_base + l->fileofs);
2785         if (l->filelen % sizeof(*in))
2786                 Host_Error("Mod_Q1BSP_LoadPlanes: funny lump size in %s", loadmodel->name);
2787
2788         loadmodel->brush.num_planes = l->filelen / sizeof(*in);
2789         loadmodel->brush.data_planes = out = (mplane_t *)Mem_Alloc(loadmodel->mempool, loadmodel->brush.num_planes * sizeof(*out));
2790
2791         for (i = 0;i < loadmodel->brush.num_planes;i++, in++, out++)
2792         {
2793                 out->normal[0] = LittleFloat(in->normal[0]);
2794                 out->normal[1] = LittleFloat(in->normal[1]);
2795                 out->normal[2] = LittleFloat(in->normal[2]);
2796                 out->dist = LittleFloat(in->dist);
2797
2798                 PlaneClassify(out);
2799         }
2800 }
2801
2802 static void Mod_Q1BSP_LoadMapBrushes(void)
2803 {
2804 #if 0
2805 // unfinished
2806         int submodel, numbrushes;
2807         qboolean firstbrush;
2808         char *text, *maptext;
2809         char mapfilename[MAX_QPATH];
2810         FS_StripExtension (loadmodel->name, mapfilename, sizeof (mapfilename));
2811         strlcat (mapfilename, ".map", sizeof (mapfilename));
2812         maptext = (unsigned char*) FS_LoadFile(mapfilename, tempmempool, false, NULL);
2813         if (!maptext)
2814                 return;
2815         text = maptext;
2816         if (!COM_ParseToken_Simple(&data, false, false))
2817                 return; // error
2818         submodel = 0;
2819         for (;;)
2820         {
2821                 if (!COM_ParseToken_Simple(&data, false, false))
2822                         break;
2823                 if (com_token[0] != '{')
2824                         return; // error
2825                 // entity
2826                 firstbrush = true;
2827                 numbrushes = 0;
2828                 maxbrushes = 256;
2829                 brushes = Mem_Alloc(loadmodel->mempool, maxbrushes * sizeof(mbrush_t));
2830                 for (;;)
2831                 {
2832                         if (!COM_ParseToken_Simple(&data, false, false))
2833                                 return; // error
2834                         if (com_token[0] == '}')
2835                                 break; // end of entity
2836                         if (com_token[0] == '{')
2837                         {
2838                                 // brush
2839                                 if (firstbrush)
2840                                 {
2841                                         if (submodel)
2842                                         {
2843                                                 if (submodel > loadmodel->brush.numsubmodels)
2844                                                 {
2845                                                         Con_Printf("Mod_Q1BSP_LoadMapBrushes: .map has more submodels than .bsp!\n");
2846                                                         model = NULL;
2847                                                 }
2848                                                 else
2849                                                         model = loadmodel->brush.submodels[submodel];
2850                                         }
2851                                         else
2852                                                 model = loadmodel;
2853                                 }
2854                                 for (;;)
2855                                 {
2856                                         if (!COM_ParseToken_Simple(&data, false, false))
2857                                                 return; // error
2858                                         if (com_token[0] == '}')
2859                                                 break; // end of brush
2860                                         // each brush face should be this format:
2861                                         // ( x y z ) ( x y z ) ( x y z ) texture scroll_s scroll_t rotateangle scale_s scale_t
2862                                         // FIXME: support hl .map format
2863                                         for (pointnum = 0;pointnum < 3;pointnum++)
2864                                         {
2865                                                 COM_ParseToken_Simple(&data, false, false);
2866                                                 for (componentnum = 0;componentnum < 3;componentnum++)
2867                                                 {
2868                                                         COM_ParseToken_Simple(&data, false, false);
2869                                                         point[pointnum][componentnum] = atof(com_token);
2870                                                 }
2871                                                 COM_ParseToken_Simple(&data, false, false);
2872                                         }
2873                                         COM_ParseToken_Simple(&data, false, false);
2874                                         strlcpy(facetexture, com_token, sizeof(facetexture));
2875                                         COM_ParseToken_Simple(&data, false, false);
2876                                         //scroll_s = atof(com_token);
2877                                         COM_ParseToken_Simple(&data, false, false);
2878                                         //scroll_t = atof(com_token);
2879                                         COM_ParseToken_Simple(&data, false, false);
2880                                         //rotate = atof(com_token);
2881                                         COM_ParseToken_Simple(&data, false, false);
2882                                         //scale_s = atof(com_token);
2883                                         COM_ParseToken_Simple(&data, false, false);
2884                                         //scale_t = atof(com_token);
2885                                         TriangleNormal(point[0], point[1], point[2], planenormal);
2886                                         VectorNormalizeDouble(planenormal);
2887                                         planedist = DotProduct(point[0], planenormal);
2888                                         //ChooseTexturePlane(planenormal, texturevector[0], texturevector[1]);
2889                                 }
2890                                 continue;
2891                         }
2892                 }
2893         }
2894 #endif
2895 }
2896
2897
2898 #define MAX_PORTALPOINTS 64
2899
2900 typedef struct portal_s
2901 {
2902         mplane_t plane;
2903         mnode_t *nodes[2];              // [0] = front side of plane
2904         struct portal_s *next[2];
2905         int numpoints;
2906         double points[3*MAX_PORTALPOINTS];
2907         struct portal_s *chain; // all portals are linked into a list
2908 }
2909 portal_t;
2910
2911 static portal_t *portalchain;
2912
2913 /*
2914 ===========
2915 AllocPortal
2916 ===========
2917 */
2918 static portal_t *AllocPortal(void)
2919 {
2920         portal_t *p;
2921         p = (portal_t *)Mem_Alloc(loadmodel->mempool, sizeof(portal_t));
2922         p->chain = portalchain;
2923         portalchain = p;
2924         return p;
2925 }
2926
2927 static void FreePortal(portal_t *p)
2928 {
2929         Mem_Free(p);
2930 }
2931
2932 static void Mod_Q1BSP_RecursiveRecalcNodeBBox(mnode_t *node)
2933 {
2934         // process only nodes (leafs already had their box calculated)
2935         if (!node->plane)
2936                 return;
2937
2938         // calculate children first
2939         Mod_Q1BSP_RecursiveRecalcNodeBBox(node->children[0]);
2940         Mod_Q1BSP_RecursiveRecalcNodeBBox(node->children[1]);
2941
2942         // make combined bounding box from children
2943         node->mins[0] = min(node->children[0]->mins[0], node->children[1]->mins[0]);
2944         node->mins[1] = min(node->children[0]->mins[1], node->children[1]->mins[1]);
2945         node->mins[2] = min(node->children[0]->mins[2], node->children[1]->mins[2]);
2946         node->maxs[0] = max(node->children[0]->maxs[0], node->children[1]->maxs[0]);
2947         node->maxs[1] = max(node->children[0]->maxs[1], node->children[1]->maxs[1]);
2948         node->maxs[2] = max(node->children[0]->maxs[2], node->children[1]->maxs[2]);
2949 }
2950
2951 static void Mod_Q1BSP_FinalizePortals(void)
2952 {
2953         int i, j, numportals, numpoints;
2954         portal_t *p, *pnext;
2955         mportal_t *portal;
2956         mvertex_t *point;
2957         mleaf_t *leaf, *endleaf;
2958
2959         // tally up portal and point counts and recalculate bounding boxes for all
2960         // leafs (because qbsp is very sloppy)
2961         leaf = loadmodel->brush.data_leafs;
2962         endleaf = leaf + loadmodel->brush.num_leafs;
2963         for (;leaf < endleaf;leaf++)
2964         {
2965                 VectorSet(leaf->mins,  2000000000,  2000000000,  2000000000);
2966                 VectorSet(leaf->maxs, -2000000000, -2000000000, -2000000000);
2967         }
2968         p = portalchain;
2969         numportals = 0;
2970         numpoints = 0;
2971         while (p)
2972         {
2973                 // note: this check must match the one below or it will usually corrupt memory
2974                 // 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
2975                 if (p->numpoints >= 3 && p->nodes[0] != p->nodes[1] && ((mleaf_t *)p->nodes[0])->clusterindex >= 0 && ((mleaf_t *)p->nodes[1])->clusterindex >= 0)
2976                 {
2977                         numportals += 2;
2978                         numpoints += p->numpoints * 2;
2979                 }
2980                 p = p->chain;
2981         }
2982         loadmodel->brush.data_portals = (mportal_t *)Mem_Alloc(loadmodel->mempool, numportals * sizeof(mportal_t) + numpoints * sizeof(mvertex_t));
2983         loadmodel->brush.num_portals = numportals;
2984         loadmodel->brush.data_portalpoints = (mvertex_t *)((unsigned char *) loadmodel->brush.data_portals + numportals * sizeof(mportal_t));
2985         loadmodel->brush.num_portalpoints = numpoints;
2986         // clear all leaf portal chains
2987         for (i = 0;i < loadmodel->brush.num_leafs;i++)
2988                 loadmodel->brush.data_leafs[i].portals = NULL;
2989         // process all portals in the global portal chain, while freeing them
2990         portal = loadmodel->brush.data_portals;
2991         point = loadmodel->brush.data_portalpoints;
2992         p = portalchain;
2993         portalchain = NULL;
2994         while (p)
2995         {
2996                 pnext = p->chain;
2997
2998                 if (p->numpoints >= 3 && p->nodes[0] != p->nodes[1])
2999                 {
3000                         // note: this check must match the one above or it will usually corrupt memory
3001                         // 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
3002                         if (((mleaf_t *)p->nodes[0])->clusterindex >= 0 && ((mleaf_t *)p->nodes[1])->clusterindex >= 0)
3003                         {
3004                                 // first make the back to front portal(forward portal)
3005                                 portal->points = point;
3006                                 portal->numpoints = p->numpoints;
3007                                 portal->plane.dist = p->plane.dist;
3008                                 VectorCopy(p->plane.normal, portal->plane.normal);
3009                                 portal->here = (mleaf_t *)p->nodes[1];
3010                                 portal->past = (mleaf_t *)p->nodes[0];
3011                                 // copy points
3012                                 for (j = 0;j < portal->numpoints;j++)
3013                                 {
3014                                         VectorCopy(p->points + j*3, point->position);
3015                                         point++;
3016                                 }
3017                                 BoxFromPoints(portal->mins, portal->maxs, portal->numpoints, portal->points->position);
3018                                 PlaneClassify(&portal->plane);
3019
3020                                 // link into leaf's portal chain
3021                                 portal->next = portal->here->portals;
3022                                 portal->here->portals = portal;
3023
3024                                 // advance to next portal
3025                                 portal++;
3026
3027                                 // then make the front to back portal(backward portal)
3028                                 portal->points = point;
3029                                 portal->numpoints = p->numpoints;
3030                                 portal->plane.dist = -p->plane.dist;
3031                                 VectorNegate(p->plane.normal, portal->plane.normal);
3032                                 portal->here = (mleaf_t *)p->nodes[0];
3033                                 portal->past = (mleaf_t *)p->nodes[1];
3034                                 // copy points
3035                                 for (j = portal->numpoints - 1;j >= 0;j--)
3036                                 {
3037                                         VectorCopy(p->points + j*3, point->position);
3038                                         point++;
3039                                 }
3040                                 BoxFromPoints(portal->mins, portal->maxs, portal->numpoints, portal->points->position);
3041                                 PlaneClassify(&portal->plane);
3042
3043                                 // link into leaf's portal chain
3044                                 portal->next = portal->here->portals;
3045                                 portal->here->portals = portal;
3046
3047                                 // advance to next portal
3048                                 portal++;
3049                         }
3050                         // add the portal's polygon points to the leaf bounding boxes
3051                         for (i = 0;i < 2;i++)
3052                         {
3053                                 leaf = (mleaf_t *)p->nodes[i];
3054                                 for (j = 0;j < p->numpoints;j++)
3055                                 {
3056                                         if (leaf->mins[0] > p->points[j*3+0]) leaf->mins[0] = p->points[j*3+0];
3057                                         if (leaf->mins[1] > p->points[j*3+1]) leaf->mins[1] = p->points[j*3+1];
3058                                         if (leaf->mins[2] > p->points[j*3+2]) leaf->mins[2] = p->points[j*3+2];
3059                                         if (leaf->maxs[0] < p->points[j*3+0]) leaf->maxs[0] = p->points[j*3+0];
3060                                         if (leaf->maxs[1] < p->points[j*3+1]) leaf->maxs[1] = p->points[j*3+1];
3061                                         if (leaf->maxs[2] < p->points[j*3+2]) leaf->maxs[2] = p->points[j*3+2];
3062                                 }
3063                         }
3064                 }
3065                 FreePortal(p);
3066                 p = pnext;
3067         }
3068         // now recalculate the node bounding boxes from the leafs
3069         Mod_Q1BSP_RecursiveRecalcNodeBBox(loadmodel->brush.data_nodes);
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 void Mod_Q1BSP_RecursiveNodePortals(mnode_t *node)
3147 {
3148         int i, side;
3149         mnode_t *front, *back, *other_node;
3150         mplane_t clipplane, *plane;
3151         portal_t *portal, *nextportal, *nodeportal, *splitportal, *temp;
3152         int numfrontpoints, numbackpoints;
3153         double frontpoints[3*MAX_PORTALPOINTS], backpoints[3*MAX_PORTALPOINTS];
3154
3155         // if a leaf, we're done
3156         if (!node->plane)
3157                 return;
3158
3159         plane = node->plane;
3160
3161         front = node->children[0];
3162         back = node->children[1];
3163         if (front == back)
3164                 Host_Error("Mod_Q1BSP_RecursiveNodePortals: corrupt node hierarchy");
3165
3166         // create the new portal by generating a polygon for the node plane,
3167         // and clipping it by all of the other portals(which came from nodes above this one)
3168         nodeportal = AllocPortal();
3169         nodeportal->plane = *plane;
3170
3171         // 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)
3172         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);
3173         nodeportal->numpoints = 4;
3174         side = 0;       // shut up compiler warning
3175         for (portal = (portal_t *)node->portals;portal;portal = portal->next[side])
3176         {
3177                 clipplane = portal->plane;
3178                 if (portal->nodes[0] == portal->nodes[1])
3179                         Host_Error("Mod_Q1BSP_RecursiveNodePortals: portal has same node on both sides(1)");
3180                 if (portal->nodes[0] == node)
3181                         side = 0;
3182                 else if (portal->nodes[1] == node)
3183                 {
3184                         clipplane.dist = -clipplane.dist;
3185                         VectorNegate(clipplane.normal, clipplane.normal);
3186                         side = 1;
3187                 }
3188                 else
3189                         Host_Error("Mod_Q1BSP_RecursiveNodePortals: mislinked portal");
3190
3191                 for (i = 0;i < nodeportal->numpoints*3;i++)
3192                         frontpoints[i] = nodeportal->points[i];
3193                 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);
3194                 if (nodeportal->numpoints <= 0 || nodeportal->numpoints >= MAX_PORTALPOINTS)
3195                         break;
3196         }
3197
3198         if (nodeportal->numpoints < 3)
3199         {
3200                 Con_Print("Mod_Q1BSP_RecursiveNodePortals: WARNING: new portal was clipped away\n");
3201                 nodeportal->numpoints = 0;
3202         }
3203         else if (nodeportal->numpoints >= MAX_PORTALPOINTS)
3204         {
3205                 Con_Print("Mod_Q1BSP_RecursiveNodePortals: WARNING: new portal has too many points\n");
3206                 nodeportal->numpoints = 0;
3207         }
3208
3209         AddPortalToNodes(nodeportal, front, back);
3210
3211         // split the portals of this node along this node's plane and assign them to the children of this node
3212         // (migrating the portals downward through the tree)
3213         for (portal = (portal_t *)node->portals;portal;portal = nextportal)
3214         {
3215                 if (portal->nodes[0] == portal->nodes[1])
3216                         Host_Error("Mod_Q1BSP_RecursiveNodePortals: portal has same node on both sides(2)");
3217                 if (portal->nodes[0] == node)
3218                         side = 0;
3219                 else if (portal->nodes[1] == node)
3220                         side = 1;
3221                 else
3222                         Host_Error("Mod_Q1BSP_RecursiveNodePortals: mislinked portal");
3223                 nextportal = portal->next[side];
3224                 if (!portal->numpoints)
3225                         continue;
3226
3227                 other_node = portal->nodes[!side];
3228                 RemovePortalFromNodes(portal);
3229
3230                 // cut the portal into two portals, one on each side of the node plane
3231                 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);
3232
3233                 if (!numfrontpoints)
3234                 {
3235                         if (side == 0)
3236                                 AddPortalToNodes(portal, back, other_node);
3237                         else
3238                                 AddPortalToNodes(portal, other_node, back);
3239                         continue;
3240                 }
3241                 if (!numbackpoints)
3242                 {
3243                         if (side == 0)
3244                                 AddPortalToNodes(portal, front, other_node);
3245                         else
3246                                 AddPortalToNodes(portal, other_node, front);
3247                         continue;
3248                 }
3249
3250                 // the portal is split
3251                 splitportal = AllocPortal();
3252                 temp = splitportal->chain;
3253                 *splitportal = *portal;
3254                 splitportal->chain = temp;
3255                 for (i = 0;i < numbackpoints*3;i++)
3256                         splitportal->points[i] = backpoints[i];
3257                 splitportal->numpoints = numbackpoints;
3258                 for (i = 0;i < numfrontpoints*3;i++)
3259                         portal->points[i] = frontpoints[i];
3260                 portal->numpoints = numfrontpoints;
3261
3262                 if (side == 0)
3263                 {
3264                         AddPortalToNodes(portal, front, other_node);
3265                         AddPortalToNodes(splitportal, back, other_node);
3266                 }
3267                 else
3268                 {
3269                         AddPortalToNodes(portal, other_node, front);
3270                         AddPortalToNodes(splitportal, other_node, back);
3271                 }
3272         }
3273
3274         Mod_Q1BSP_RecursiveNodePortals(front);
3275         Mod_Q1BSP_RecursiveNodePortals(back);
3276 }
3277
3278 static void Mod_Q1BSP_MakePortals(void)
3279 {
3280         portalchain = NULL;
3281         Mod_Q1BSP_RecursiveNodePortals(loadmodel->brush.data_nodes);
3282         Mod_Q1BSP_FinalizePortals();
3283 }
3284
3285 //Returns PVS data for a given point
3286 //(note: can return NULL)
3287 static unsigned char *Mod_Q1BSP_GetPVS(dp_model_t *model, const vec3_t p)
3288 {
3289         mnode_t *node;
3290         node = model->brush.data_nodes;
3291         while (node->plane)
3292                 node = node->children[(node->plane->type < 3 ? p[node->plane->type] : DotProduct(p,node->plane->normal)) < node->plane->dist];
3293         if (((mleaf_t *)node)->clusterindex >= 0)
3294                 return model->brush.data_pvsclusters + ((mleaf_t *)node)->clusterindex * model->brush.num_pvsclusterbytes;
3295         else
3296                 return NULL;
3297 }
3298
3299 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)
3300 {
3301         while (node->plane)
3302         {
3303                 float d = PlaneDiff(org, node->plane);
3304                 if (d > radius)
3305                         node = node->children[0];
3306                 else if (d < -radius)
3307                         node = node->children[1];
3308                 else
3309                 {
3310                         // go down both sides
3311                         Mod_Q1BSP_FatPVS_RecursiveBSPNode(model, org, radius, pvsbuffer, pvsbytes, node->children[0]);
3312                         node = node->children[1];
3313                 }
3314         }
3315         // if this leaf is in a cluster, accumulate the pvs bits
3316         if (((mleaf_t *)node)->clusterindex >= 0)
3317         {
3318                 int i;
3319                 unsigned char *pvs = model->brush.data_pvsclusters + ((mleaf_t *)node)->clusterindex * model->brush.num_pvsclusterbytes;
3320                 for (i = 0;i < pvsbytes;i++)
3321                         pvsbuffer[i] |= pvs[i];
3322         }
3323 }
3324
3325 //Calculates a PVS that is the inclusive or of all leafs within radius pixels
3326 //of the given point.
3327 static int Mod_Q1BSP_FatPVS(dp_model_t *model, const vec3_t org, vec_t radius, unsigned char *pvsbuffer, int pvsbufferlength, qboolean merge)
3328 {
3329         int bytes = model->brush.num_pvsclusterbytes;
3330         bytes = min(bytes, pvsbufferlength);
3331         if (r_novis.integer || !model->brush.num_pvsclusters || !Mod_Q1BSP_GetPVS(model, org))
3332         {
3333                 memset(pvsbuffer, 0xFF, bytes);
3334                 return bytes;
3335         }
3336         if (!merge)
3337                 memset(pvsbuffer, 0, bytes);
3338         Mod_Q1BSP_FatPVS_RecursiveBSPNode(model, org, radius, pvsbuffer, bytes, model->brush.data_nodes);
3339         return bytes;
3340 }
3341
3342 static void Mod_Q1BSP_RoundUpToHullSize(dp_model_t *cmodel, const vec3_t inmins, const vec3_t inmaxs, vec3_t outmins, vec3_t outmaxs)
3343 {
3344         vec3_t size;
3345         const hull_t *hull;
3346
3347         VectorSubtract(inmaxs, inmins, size);
3348         if (cmodel->brush.ishlbsp)
3349         {
3350                 if (size[0] < 3)
3351                         hull = &cmodel->brushq1.hulls[0]; // 0x0x0
3352                 else if (size[0] <= 32)
3353                 {
3354                         if (size[2] < 54) // pick the nearest of 36 or 72
3355                                 hull = &cmodel->brushq1.hulls[3]; // 32x32x36
3356                         else
3357                                 hull = &cmodel->brushq1.hulls[1]; // 32x32x72
3358                 }
3359                 else
3360                         hull = &cmodel->brushq1.hulls[2]; // 64x64x64
3361         }
3362         else
3363         {
3364                 if (size[0] < 3)
3365                         hull = &cmodel->brushq1.hulls[0]; // 0x0x0
3366                 else if (size[0] <= 32)
3367                         hull = &cmodel->brushq1.hulls[1]; // 32x32x56
3368                 else
3369                         hull = &cmodel->brushq1.hulls[2]; // 64x64x88
3370         }
3371         VectorCopy(inmins, outmins);
3372         VectorAdd(inmins, hull->clip_size, outmaxs);
3373 }
3374
3375 void Mod_Q1BSP_Load(dp_model_t *mod, void *buffer, void *bufferend)
3376 {
3377         int i, j, k;
3378         dheader_t *header;
3379         dmodel_t *bm;
3380         mempool_t *mainmempool;
3381         float dist, modelyawradius, modelradius, *vec;
3382         msurface_t *surface;
3383         int numshadowmeshtriangles;
3384         hullinfo_t hullinfo;
3385         int totalstylesurfaces, totalstyles, stylecounts[256], remapstyles[256];
3386         model_brush_lightstyleinfo_t styleinfo[256];
3387         unsigned char *datapointer;
3388
3389         mod->modeldatatypestring = "Q1BSP";
3390
3391         mod->type = mod_brushq1;
3392
3393         header = (dheader_t *)buffer;
3394
3395         i = LittleLong(header->version);
3396         if (i != BSPVERSION && i != 30)
3397                 Host_Error("Mod_Q1BSP_Load: %s has wrong version number(%i should be %i(Quake) or 30(HalfLife)", mod->name, i, BSPVERSION);
3398         mod->brush.ishlbsp = i == 30;
3399
3400 // fill in hull info
3401         VectorClear (hullinfo.hullsizes[0][0]);
3402         VectorClear (hullinfo.hullsizes[0][1]);
3403         if (mod->brush.ishlbsp)
3404         {
3405                 mod->modeldatatypestring = "HLBSP";
3406
3407                 hullinfo.filehulls = 4;
3408                 VectorSet (hullinfo.hullsizes[1][0], -16, -16, -36);
3409                 VectorSet (hullinfo.hullsizes[1][1], 16, 16, 36);
3410                 VectorSet (hullinfo.hullsizes[2][0], -32, -32, -32);
3411                 VectorSet (hullinfo.hullsizes[2][1], 32, 32, 32);
3412                 VectorSet (hullinfo.hullsizes[3][0], -16, -16, -18);
3413                 VectorSet (hullinfo.hullsizes[3][1], 16, 16, 18);
3414         }
3415         else
3416         {
3417                 hullinfo.filehulls = 4;
3418                 VectorSet (hullinfo.hullsizes[1][0], -16, -16, -24);
3419                 VectorSet (hullinfo.hullsizes[1][1], 16, 16, 32);
3420                 VectorSet (hullinfo.hullsizes[2][0], -32, -32, -24);
3421                 VectorSet (hullinfo.hullsizes[2][1], 32, 32, 64);
3422         }
3423
3424 // read lumps
3425         mod_base = (unsigned char*)buffer;
3426         for (i = 0; i < HEADER_LUMPS; i++)
3427         {
3428                 header->lumps[i].fileofs = LittleLong(header->lumps[i].fileofs);
3429                 header->lumps[i].filelen = LittleLong(header->lumps[i].filelen);
3430         }
3431
3432         mod->soundfromcenter = true;
3433         mod->TraceBox = Mod_Q1BSP_TraceBox;
3434         mod->PointSuperContents = Mod_Q1BSP_PointSuperContents;
3435         mod->brush.TraceLineOfSight = Mod_Q1BSP_TraceLineOfSight;
3436         mod->brush.SuperContentsFromNativeContents = Mod_Q1BSP_SuperContentsFromNativeContents;
3437         mod->brush.NativeContentsFromSuperContents = Mod_Q1BSP_NativeContentsFromSuperContents;
3438         mod->brush.GetPVS = Mod_Q1BSP_GetPVS;
3439         mod->brush.FatPVS = Mod_Q1BSP_FatPVS;
3440         mod->brush.BoxTouchingPVS = Mod_Q1BSP_BoxTouchingPVS;
3441         mod->brush.BoxTouchingLeafPVS = Mod_Q1BSP_BoxTouchingLeafPVS;
3442         mod->brush.BoxTouchingVisibleLeafs = Mod_Q1BSP_BoxTouchingVisibleLeafs;
3443         mod->brush.FindBoxClusters = Mod_Q1BSP_FindBoxClusters;
3444         mod->brush.LightPoint = Mod_Q1BSP_LightPoint;
3445         mod->brush.FindNonSolidLocation = Mod_Q1BSP_FindNonSolidLocation;
3446         mod->brush.AmbientSoundLevelsForPoint = Mod_Q1BSP_AmbientSoundLevelsForPoint;
3447         mod->brush.RoundUpToHullSize = Mod_Q1BSP_RoundUpToHullSize;
3448         mod->brush.PointInLeaf = Mod_Q1BSP_PointInLeaf;
3449
3450         if (loadmodel->isworldmodel)
3451                 Cvar_SetValue("halflifebsp", mod->brush.ishlbsp);
3452
3453 // load into heap
3454
3455         mod->brush.qw_md4sum = 0;
3456         mod->brush.qw_md4sum2 = 0;
3457         for (i = 0;i < HEADER_LUMPS;i++)
3458         {
3459                 if (i == LUMP_ENTITIES)
3460                         continue;
3461                 mod->brush.qw_md4sum ^= LittleLong(Com_BlockChecksum(mod_base + header->lumps[i].fileofs, header->lumps[i].filelen));
3462                 if (i == LUMP_VISIBILITY || i == LUMP_LEAFS || i == LUMP_NODES)
3463                         continue;
3464                 mod->brush.qw_md4sum2 ^= LittleLong(Com_BlockChecksum(mod_base + header->lumps[i].fileofs, header->lumps[i].filelen));
3465         }
3466
3467         Mod_Q1BSP_LoadEntities(&header->lumps[LUMP_ENTITIES]);
3468         Mod_Q1BSP_LoadVertexes(&header->lumps[LUMP_VERTEXES]);
3469         Mod_Q1BSP_LoadEdges(&header->lumps[LUMP_EDGES]);
3470         Mod_Q1BSP_LoadSurfedges(&header->lumps[LUMP_SURFEDGES]);
3471         Mod_Q1BSP_LoadTextures(&header->lumps[LUMP_TEXTURES]);
3472         Mod_Q1BSP_LoadLighting(&header->lumps[LUMP_LIGHTING]);
3473         Mod_Q1BSP_LoadPlanes(&header->lumps[LUMP_PLANES]);
3474         Mod_Q1BSP_LoadTexinfo(&header->lumps[LUMP_TEXINFO]);
3475         Mod_Q1BSP_LoadFaces(&header->lumps[LUMP_FACES]);
3476         Mod_Q1BSP_LoadLeaffaces(&header->lumps[LUMP_MARKSURFACES]);
3477         Mod_Q1BSP_LoadVisibility(&header->lumps[LUMP_VISIBILITY]);
3478         // load submodels before leafs because they contain the number of vis leafs
3479         Mod_Q1BSP_LoadSubmodels(&header->lumps[LUMP_MODELS], &hullinfo);
3480         Mod_Q1BSP_LoadLeafs(&header->lumps[LUMP_LEAFS]);
3481         Mod_Q1BSP_LoadNodes(&header->lumps[LUMP_NODES]);
3482         Mod_Q1BSP_LoadClipnodes(&header->lumps[LUMP_CLIPNODES], &hullinfo);
3483
3484         // check if the map supports transparent water rendering
3485         loadmodel->brush.supportwateralpha = Mod_Q1BSP_CheckWaterAlphaSupport();
3486
3487         if (mod->brushq1.data_compressedpvs)
3488                 Mem_Free(mod->brushq1.data_compressedpvs);
3489         mod->brushq1.data_compressedpvs = NULL;
3490         mod->brushq1.num_compressedpvs = 0;
3491
3492         Mod_Q1BSP_MakeHull0();
3493         Mod_Q1BSP_MakePortals();
3494
3495         mod->numframes = 2;             // regular and alternate animation
3496         mod->numskins = 1;
3497
3498         mainmempool = mod->mempool;
3499
3500         // make a single combined shadow mesh to allow optimized shadow volume creation
3501         numshadowmeshtriangles = 0;
3502         for (j = 0, surface = loadmodel->data_surfaces;j < loadmodel->num_surfaces;j++, surface++)
3503         {
3504                 surface->num_firstshadowmeshtriangle = numshadowmeshtriangles;
3505                 numshadowmeshtriangles += surface->num_triangles;
3506         }
3507         loadmodel->brush.shadowmesh = Mod_ShadowMesh_Begin(loadmodel->mempool, numshadowmeshtriangles * 3, numshadowmeshtriangles, NULL, NULL, NULL, false, false, true);
3508         for (j = 0, surface = loadmodel->data_surfaces;j < loadmodel->num_surfaces;j++, surface++)
3509                 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));
3510         loadmodel->brush.shadowmesh = Mod_ShadowMesh_Finish(loadmodel->mempool, loadmodel->brush.shadowmesh, false, true, false);
3511         Mod_BuildTriangleNeighbors(loadmodel->brush.shadowmesh->neighbor3i, loadmodel->brush.shadowmesh->element3i, loadmodel->brush.shadowmesh->numtriangles);
3512
3513         if (loadmodel->brush.numsubmodels)
3514                 loadmodel->brush.submodels = (dp_model_t **)Mem_Alloc(loadmodel->mempool, loadmodel->brush.numsubmodels * sizeof(dp_model_t *));
3515
3516         // LordHavoc: to clear the fog around the original quake submodel code, I
3517         // will explain:
3518         // first of all, some background info on the submodels:
3519         // model 0 is the map model (the world, named maps/e1m1.bsp for example)
3520         // model 1 and higher are submodels (doors and the like, named *1, *2, etc)
3521         // now the weird for loop itself:
3522         // the loop functions in an odd way, on each iteration it sets up the
3523         // current 'mod' model (which despite the confusing code IS the model of
3524         // the number i), at the end of the loop it duplicates the model to become
3525         // the next submodel, and loops back to set up the new submodel.
3526
3527         // LordHavoc: now the explanation of my sane way (which works identically):
3528         // set up the world model, then on each submodel copy from the world model
3529         // and set up the submodel with the respective model info.
3530         totalstylesurfaces = 0;
3531         totalstyles = 0;
3532         for (i = 0;i < mod->brush.numsubmodels;i++)
3533         {
3534                 memset(stylecounts, 0, sizeof(stylecounts));
3535                 for (k = 0;k < mod->brushq1.submodels[i].numfaces;k++)
3536                 {
3537                         surface = mod->data_surfaces + mod->brushq1.submodels[i].firstface + k;
3538                         for (j = 0;j < MAXLIGHTMAPS;j++)
3539                                 stylecounts[surface->lightmapinfo->styles[j]]++;
3540                 }
3541                 for (k = 0;k < 255;k++)
3542                 {
3543                         totalstyles++;
3544                         if (stylecounts[k])
3545                                 totalstylesurfaces += stylecounts[k];
3546                 }
3547         }
3548         datapointer = (unsigned char *)Mem_Alloc(mod->mempool, mod->num_surfaces * sizeof(int) + totalstyles * sizeof(model_brush_lightstyleinfo_t) + totalstylesurfaces * sizeof(int *));
3549         for (i = 0;i < mod->brush.numsubmodels;i++)
3550         {
3551                 // LordHavoc: this code was originally at the end of this loop, but
3552                 // has been transformed to something more readable at the start here.
3553
3554                 if (i > 0)
3555                 {
3556                         char name[10];
3557                         // LordHavoc: only register submodels if it is the world
3558                         // (prevents external bsp models from replacing world submodels with
3559                         //  their own)
3560                         if (!loadmodel->isworldmodel)
3561                                 continue;
3562                         // duplicate the basic information
3563                         sprintf(name, "*%i", i);
3564                         mod = Mod_FindName(name);
3565                         // copy the base model to this one
3566                         *mod = *loadmodel;
3567                         // rename the clone back to its proper name
3568                         strlcpy(mod->name, name, sizeof(mod->name));
3569                         // textures and memory belong to the main model
3570                         mod->texturepool = NULL;
3571                         mod->mempool = NULL;
3572                 }
3573
3574                 mod->brush.submodel = i;
3575
3576                 if (loadmodel->brush.submodels)
3577                         loadmodel->brush.submodels[i] = mod;
3578
3579                 bm = &mod->brushq1.submodels[i];
3580
3581                 mod->brushq1.hulls[0].firstclipnode = bm->headnode[0];
3582                 for (j=1 ; j<MAX_MAP_HULLS ; j++)
3583                 {
3584                         mod->brushq1.hulls[j].firstclipnode = bm->headnode[j];
3585                         mod->brushq1.hulls[j].lastclipnode = mod->brushq1.numclipnodes - 1;
3586                 }
3587
3588                 mod->firstmodelsurface = bm->firstface;
3589                 mod->nummodelsurfaces = bm->numfaces;
3590
3591                 // make the model surface list (used by shadowing/lighting)
3592                 mod->surfacelist = (int *)datapointer;datapointer += mod->nummodelsurfaces * sizeof(int);
3593                 for (j = 0;j < mod->nummodelsurfaces;j++)
3594                         mod->surfacelist[j] = mod->firstmodelsurface + j;
3595
3596                 // this gets altered below if sky or water is used
3597                 mod->DrawSky = NULL;
3598                 mod->DrawAddWaterPlanes = NULL;
3599                 mod->Draw = R_Q1BSP_Draw;
3600                 mod->DrawDepth = R_Q1BSP_DrawDepth;
3601                 mod->DrawDebug = R_Q1BSP_DrawDebug;
3602                 mod->GetLightInfo = R_Q1BSP_GetLightInfo;
3603                 mod->CompileShadowVolume = R_Q1BSP_CompileShadowVolume;
3604                 mod->DrawShadowVolume = R_Q1BSP_DrawShadowVolume;
3605                 mod->DrawLight = R_Q1BSP_DrawLight;
3606                 if (i != 0)
3607                 {
3608                         mod->brush.TraceLineOfSight = NULL;
3609                         mod->brush.GetPVS = NULL;
3610                         mod->brush.FatPVS = NULL;
3611                         mod->brush.BoxTouchingPVS = NULL;
3612                         mod->brush.BoxTouchingLeafPVS = NULL;
3613                         mod->brush.BoxTouchingVisibleLeafs = NULL;
3614                         mod->brush.FindBoxClusters = NULL;
3615                         mod->brush.LightPoint = NULL;
3616                         mod->brush.AmbientSoundLevelsForPoint = NULL;
3617                 }
3618                 // copy the submodel bounds, then enlarge the yaw and rotated bounds according to radius
3619                 VectorCopy(bm->mins, mod->normalmins);
3620                 VectorCopy(bm->maxs, mod->normalmaxs);
3621                 VectorCopy(bm->mins, mod->yawmins);
3622                 VectorCopy(bm->maxs, mod->yawmaxs);
3623                 VectorCopy(bm->mins, mod->rotatedmins);
3624                 VectorCopy(bm->maxs, mod->rotatedmaxs);
3625                 if (mod->nummodelsurfaces)
3626                 {
3627                         modelyawradius = 0;
3628                         modelradius = 0;
3629                         for (j = 0, surface = &mod->data_surfaces[mod->firstmodelsurface];j < mod->nummodelsurfaces;j++, surface++)
3630                         {
3631                                 // we only need to have a drawsky function if it is used(usually only on world model)
3632                                 if (surface->texture->basematerialflags & MATERIALFLAG_SKY)
3633                                         mod->DrawSky = R_Q1BSP_DrawSky;
3634                                 if (surface->texture->basematerialflags & (MATERIALFLAG_WATERSHADER | MATERIALFLAG_REFRACTION | MATERIALFLAG_REFLECTION))
3635                                         mod->DrawAddWaterPlanes = R_Q1BSP_DrawAddWaterPlanes;
3636                                 // calculate bounding shapes
3637                                 for (k = 0, vec = (loadmodel->surfmesh.data_vertex3f + 3 * surface->num_firstvertex);k < surface->num_vertices;k++, vec += 3)
3638                                 {
3639                                         dist = vec[0]*vec[0]+vec[1]*vec[1];
3640                                         if (modelyawradius < dist)
3641                                                 modelyawradius = dist;
3642                                         dist += vec[2]*vec[2];
3643                                         if (modelradius < dist)
3644                                                 modelradius = dist;
3645                                 }
3646                         }
3647                         modelyawradius = sqrt(modelyawradius);
3648                         modelradius = sqrt(modelradius);
3649                         mod->yawmins[0] = min(mod->yawmins[0], -modelyawradius);
3650                         mod->yawmaxs[0] = min(mod->yawmaxs[0], -modelyawradius);
3651                         mod->yawmins[1] = min(mod->yawmins[1],  modelyawradius);
3652                         mod->yawmaxs[1] = min(mod->yawmaxs[1],  modelyawradius);
3653                         mod->rotatedmins[0] = min(mod->rotatedmins[0], -modelradius);
3654                         mod->rotatedmaxs[0] = min(mod->rotatedmaxs[0],  modelradius);
3655                         mod->rotatedmins[1] = min(mod->rotatedmins[1], -modelradius);
3656                         mod->rotatedmaxs[1] = min(mod->rotatedmaxs[1],  modelradius);
3657                         mod->rotatedmins[2] = min(mod->rotatedmins[2], -modelradius);
3658                         mod->rotatedmaxs[2] = min(mod->rotatedmaxs[2],  modelradius);
3659                         mod->radius = modelradius;
3660                         mod->radius2 = modelradius * modelradius;
3661
3662                         // build lightstyle update chains
3663                         // (used to rapidly mark surface->cached_dlight on many surfaces
3664                         // when d_lightstylevalue changes)
3665                         memset(stylecounts, 0, sizeof(stylecounts));
3666                         for (k = 0;k < mod->nummodelsurfaces;k++)
3667                         {
3668                                 surface = mod->data_surfaces + mod->firstmodelsurface + k;
3669                                 for (j = 0;j < MAXLIGHTMAPS;j++)
3670                                         stylecounts[surface->lightmapinfo->styles[j]]++;
3671                         }
3672                         mod->brushq1.num_lightstyles = 0;
3673                         for (k = 0;k < 255;k++)
3674                         {
3675                                 if (stylecounts[k])
3676                                 {
3677                                         styleinfo[mod->brushq1.num_lightstyles].style = k;
3678                                         styleinfo[mod->brushq1.num_lightstyles].value = 0;
3679                                         styleinfo[mod->brushq1.num_lightstyles].numsurfaces = 0;
3680                                         styleinfo[mod->brushq1.num_lightstyles].surfacelist = (int *)datapointer;datapointer += stylecounts[k] * sizeof(int);
3681                                         remapstyles[k] = mod->brushq1.num_lightstyles;
3682                                         mod->brushq1.num_lightstyles++;
3683                                 }
3684                         }
3685                         for (k = 0;k < mod->nummodelsurfaces;k++)
3686                         {
3687                                 surface = mod->data_surfaces + mod->firstmodelsurface + k;
3688                                 for (j = 0;j < MAXLIGHTMAPS;j++)
3689                                 {
3690                                         if (surface->lightmapinfo->styles[j] != 255)
3691                                         {
3692                                                 int r = remapstyles[surface->lightmapinfo->styles[j]];
3693                                                 styleinfo[r].surfacelist[styleinfo[r].numsurfaces++] = mod->firstmodelsurface + k;
3694                                         }
3695                                 }
3696                         }
3697                         mod->brushq1.data_lightstyleinfo = (model_brush_lightstyleinfo_t *)datapointer;datapointer += mod->brushq1.num_lightstyles * sizeof(model_brush_lightstyleinfo_t);
3698                         memcpy(mod->brushq1.data_lightstyleinfo, styleinfo, mod->brushq1.num_lightstyles * sizeof(model_brush_lightstyleinfo_t));
3699                 }
3700                 else
3701                 {
3702                         // LordHavoc: empty submodel(lacrima.bsp has such a glitch)
3703                         Con_Printf("warning: empty submodel *%i in %s\n", i+1, loadmodel->name);
3704                 }
3705                 //mod->brushq1.num_visleafs = bm->visleafs;
3706         }
3707
3708         Mod_Q1BSP_LoadMapBrushes();
3709
3710         //Mod_Q1BSP_ProcessLightList();
3711
3712         if (developer.integer >= 10)
3713                 Con_Printf("Some stats for q1bsp model \"%s\": %i faces, %i nodes, %i leafs, %i visleafs, %i visleafportals\n", loadmodel->name, loadmodel->num_surfaces, loadmodel->brush.num_nodes, loadmodel->brush.num_leafs, mod->brush.num_pvsclusters, loadmodel->brush.num_portals);
3714 }
3715
3716 static void Mod_Q2BSP_LoadEntities(lump_t *l)
3717 {
3718 }
3719
3720 static void Mod_Q2BSP_LoadPlanes(lump_t *l)
3721 {
3722 /*
3723         d_t *in;
3724         m_t *out;
3725         int i, count;
3726
3727         in = (void *)(mod_base + l->fileofs);
3728         if (l->filelen % sizeof(*in))
3729                 Host_Error("Mod_Q2BSP_LoadPlanes: funny lump size in %s",loadmodel->name);
3730         count = l->filelen / sizeof(*in);
3731         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
3732
3733         loadmodel-> = out;
3734         loadmodel->num = count;
3735
3736         for (i = 0;i < count;i++, in++, out++)
3737         {
3738         }
3739 */
3740 }
3741
3742 static void Mod_Q2BSP_LoadVertices(lump_t *l)
3743 {
3744 /*
3745         d_t *in;
3746         m_t *out;
3747         int i, count;
3748
3749         in = (void *)(mod_base + l->fileofs);
3750         if (l->filelen % sizeof(*in))
3751                 Host_Error("Mod_Q2BSP_LoadVertices: funny lump size in %s",loadmodel->name);
3752         count = l->filelen / sizeof(*in);
3753         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
3754
3755         loadmodel-> = out;
3756         loadmodel->num = count;
3757
3758         for (i = 0;i < count;i++, in++, out++)
3759         {
3760         }
3761 */
3762 }
3763
3764 static void Mod_Q2BSP_LoadVisibility(lump_t *l)
3765 {
3766 /*
3767         d_t *in;
3768         m_t *out;
3769         int i, count;
3770
3771         in = (void *)(mod_base + l->fileofs);
3772         if (l->filelen % sizeof(*in))
3773                 Host_Error("Mod_Q2BSP_LoadVisibility: funny lump size in %s",loadmodel->name);
3774         count = l->filelen / sizeof(*in);
3775         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
3776
3777         loadmodel-> = out;
3778         loadmodel->num = count;
3779
3780         for (i = 0;i < count;i++, in++, out++)
3781         {
3782         }
3783 */
3784 }
3785
3786 static void Mod_Q2BSP_LoadNodes(lump_t *l)
3787 {
3788 /*
3789         d_t *in;
3790         m_t *out;
3791         int i, count;
3792
3793         in = (void *)(mod_base + l->fileofs);
3794         if (l->filelen % sizeof(*in))
3795                 Host_Error("Mod_Q2BSP_LoadNodes: funny lump size in %s",loadmodel->name);
3796         count = l->filelen / sizeof(*in);
3797         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
3798
3799         loadmodel-> = out;
3800         loadmodel->num = count;
3801
3802         for (i = 0;i < count;i++, in++, out++)
3803         {
3804         }
3805 */
3806 }
3807
3808 static void Mod_Q2BSP_LoadTexInfo(lump_t *l)
3809 {
3810 /*
3811         d_t *in;
3812         m_t *out;
3813         int i, count;
3814
3815         in = (void *)(mod_base + l->fileofs);
3816         if (l->filelen % sizeof(*in))
3817                 Host_Error("Mod_Q2BSP_LoadTexInfo: funny lump size in %s",loadmodel->name);
3818         count = l->filelen / sizeof(*in);
3819         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
3820
3821         loadmodel-> = out;
3822         loadmodel->num = count;
3823
3824         for (i = 0;i < count;i++, in++, out++)
3825         {
3826         }
3827 */
3828 }
3829
3830 static void Mod_Q2BSP_LoadFaces(lump_t *l)
3831 {
3832 /*
3833         d_t *in;
3834         m_t *out;
3835         int i, count;
3836
3837         in = (void *)(mod_base + l->fileofs);
3838         if (l->filelen % sizeof(*in))
3839                 Host_Error("Mod_Q2BSP_LoadFaces: funny lump size in %s",loadmodel->name);
3840         count = l->filelen / sizeof(*in);
3841         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
3842
3843         loadmodel-> = out;
3844         loadmodel->num = count;
3845
3846         for (i = 0;i < count;i++, in++, out++)
3847         {
3848         }
3849 */
3850 }
3851
3852 static void Mod_Q2BSP_LoadLighting(lump_t *l)
3853 {
3854 /*
3855         d_t *in;
3856         m_t *out;
3857         int i, count;
3858
3859         in = (void *)(mod_base + l->fileofs);
3860         if (l->filelen % sizeof(*in))
3861                 Host_Error("Mod_Q2BSP_LoadLighting: funny lump size in %s",loadmodel->name);
3862         count = l->filelen / sizeof(*in);
3863         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
3864
3865         loadmodel-> = out;
3866         loadmodel->num = count;
3867
3868         for (i = 0;i < count;i++, in++, out++)
3869         {
3870         }
3871 */
3872 }
3873
3874 static void Mod_Q2BSP_LoadLeafs(lump_t *l)
3875 {
3876 /*
3877         d_t *in;
3878         m_t *out;
3879         int i, count;
3880
3881         in = (void *)(mod_base + l->fileofs);
3882         if (l->filelen % sizeof(*in))
3883                 Host_Error("Mod_Q2BSP_LoadLeafs: funny lump size in %s",loadmodel->name);
3884         count = l->filelen / sizeof(*in);
3885         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
3886
3887         loadmodel-> = out;
3888         loadmodel->num = count;
3889
3890         for (i = 0;i < count;i++, in++, out++)
3891         {
3892         }
3893 */
3894 }
3895
3896 static void Mod_Q2BSP_LoadLeafFaces(lump_t *l)
3897 {
3898 /*
3899         d_t *in;
3900         m_t *out;
3901         int i, count;
3902
3903         in = (void *)(mod_base + l->fileofs);
3904         if (l->filelen % sizeof(*in))
3905                 Host_Error("Mod_Q2BSP_LoadLeafFaces: funny lump size in %s",loadmodel->name);
3906         count = l->filelen / sizeof(*in);
3907         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
3908
3909         loadmodel-> = out;
3910         loadmodel->num = count;
3911
3912         for (i = 0;i < count;i++, in++, out++)
3913         {
3914         }
3915 */
3916 }
3917
3918 static void Mod_Q2BSP_LoadLeafBrushes(lump_t *l)
3919 {
3920 /*
3921         d_t *in;
3922         m_t *out;
3923         int i, count;
3924
3925         in = (void *)(mod_base + l->fileofs);
3926         if (l->filelen % sizeof(*in))
3927                 Host_Error("Mod_Q2BSP_LoadLeafBrushes: funny lump size in %s",loadmodel->name);
3928         count = l->filelen / sizeof(*in);
3929         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
3930
3931         loadmodel-> = out;
3932         loadmodel->num = count;
3933
3934         for (i = 0;i < count;i++, in++, out++)
3935         {
3936         }
3937 */
3938 }
3939
3940 static void Mod_Q2BSP_LoadEdges(lump_t *l)
3941 {
3942 /*
3943         d_t *in;
3944         m_t *out;
3945         int i, count;
3946
3947         in = (void *)(mod_base + l->fileofs);
3948         if (l->filelen % sizeof(*in))
3949                 Host_Error("Mod_Q2BSP_LoadEdges: funny lump size in %s",loadmodel->name);
3950         count = l->filelen / sizeof(*in);
3951         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
3952
3953         loadmodel-> = out;
3954         loadmodel->num = count;
3955
3956         for (i = 0;i < count;i++, in++, out++)
3957         {
3958         }
3959 */
3960 }
3961
3962 static void Mod_Q2BSP_LoadSurfEdges(lump_t *l)
3963 {
3964 /*
3965         d_t *in;
3966         m_t *out;
3967         int i, count;
3968
3969         in = (void *)(mod_base + l->fileofs);
3970         if (l->filelen % sizeof(*in))
3971                 Host_Error("Mod_Q2BSP_LoadSurfEdges: funny lump size in %s",loadmodel->name);
3972         count = l->filelen / sizeof(*in);
3973         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
3974
3975         loadmodel-> = out;
3976         loadmodel->num = count;
3977
3978         for (i = 0;i < count;i++, in++, out++)
3979         {
3980         }
3981 */
3982 }
3983
3984 static void Mod_Q2BSP_LoadBrushes(lump_t *l)
3985 {
3986 /*
3987         d_t *in;
3988         m_t *out;
3989         int i, count;
3990
3991         in = (void *)(mod_base + l->fileofs);
3992         if (l->filelen % sizeof(*in))
3993                 Host_Error("Mod_Q2BSP_LoadBrushes: funny lump size in %s",loadmodel->name);
3994         count = l->filelen / sizeof(*in);
3995         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
3996
3997         loadmodel-> = out;
3998         loadmodel->num = count;
3999
4000         for (i = 0;i < count;i++, in++, out++)
4001         {
4002         }
4003 */
4004 }
4005
4006 static void Mod_Q2BSP_LoadBrushSides(lump_t *l)
4007 {
4008 /*
4009         d_t *in;
4010         m_t *out;
4011         int i, count;
4012
4013         in = (void *)(mod_base + l->fileofs);
4014         if (l->filelen % sizeof(*in))
4015                 Host_Error("Mod_Q2BSP_LoadBrushSides: funny lump size in %s",loadmodel->name);
4016         count = l->filelen / sizeof(*in);
4017         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
4018
4019         loadmodel-> = out;
4020         loadmodel->num = count;
4021
4022         for (i = 0;i < count;i++, in++, out++)
4023         {
4024         }
4025 */
4026 }
4027
4028 static void Mod_Q2BSP_LoadAreas(lump_t *l)
4029 {
4030 /*
4031         d_t *in;
4032         m_t *out;
4033         int i, count;
4034
4035         in = (void *)(mod_base + l->fileofs);
4036         if (l->filelen % sizeof(*in))
4037                 Host_Error("Mod_Q2BSP_LoadAreas: funny lump size in %s",loadmodel->name);
4038         count = l->filelen / sizeof(*in);
4039         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
4040
4041         loadmodel-> = out;
4042         loadmodel->num = count;
4043
4044         for (i = 0;i < count;i++, in++, out++)
4045         {
4046         }
4047 */
4048 }
4049
4050 static void Mod_Q2BSP_LoadAreaPortals(lump_t *l)
4051 {
4052 /*
4053         d_t *in;
4054         m_t *out;
4055         int i, count;
4056
4057         in = (void *)(mod_base + l->fileofs);
4058         if (l->filelen % sizeof(*in))
4059                 Host_Error("Mod_Q2BSP_LoadAreaPortals: funny lump size in %s",loadmodel->name);
4060         count = l->filelen / sizeof(*in);
4061         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
4062
4063         loadmodel-> = out;
4064         loadmodel->num = count;
4065
4066         for (i = 0;i < count;i++, in++, out++)
4067         {
4068         }
4069 */
4070 }
4071
4072 static void Mod_Q2BSP_LoadModels(lump_t *l)
4073 {
4074 /*
4075         d_t *in;
4076         m_t *out;
4077         int i, count;
4078
4079         in = (void *)(mod_base + l->fileofs);
4080         if (l->filelen % sizeof(*in))
4081                 Host_Error("Mod_Q2BSP_LoadModels: funny lump size in %s",loadmodel->name);
4082         count = l->filelen / sizeof(*in);
4083         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
4084
4085         loadmodel-> = out;
4086         loadmodel->num = count;
4087
4088         for (i = 0;i < count;i++, in++, out++)
4089         {
4090         }
4091 */
4092 }
4093
4094 void static Mod_Q2BSP_Load(dp_model_t *mod, void *buffer, void *bufferend)
4095 {
4096         int i;
4097         q2dheader_t *header;
4098
4099         Host_Error("Mod_Q2BSP_Load: not yet implemented");
4100
4101         mod->modeldatatypestring = "Q2BSP";
4102
4103         mod->type = mod_brushq2;
4104
4105         header = (q2dheader_t *)buffer;
4106
4107         i = LittleLong(header->version);
4108         if (i != Q2BSPVERSION)
4109                 Host_Error("Mod_Q2BSP_Load: %s has wrong version number (%i, should be %i)", mod->name, i, Q2BSPVERSION);
4110         mod->brush.ishlbsp = false;
4111         if (loadmodel->isworldmodel)
4112                 Cvar_SetValue("halflifebsp", mod->brush.ishlbsp);
4113
4114         mod_base = (unsigned char *)header;
4115
4116         // swap all the lumps
4117         for (i = 0;i < (int) sizeof(*header) / 4;i++)
4118                 ((int *)header)[i] = LittleLong(((int *)header)[i]);
4119
4120         mod->brush.qw_md4sum = 0;
4121         mod->brush.qw_md4sum2 = 0;
4122         for (i = 0;i < Q2HEADER_LUMPS;i++)
4123         {
4124                 if (i == Q2LUMP_ENTITIES)
4125                         continue;
4126                 mod->brush.qw_md4sum ^= Com_BlockChecksum(mod_base + header->lumps[i].fileofs, header->lumps[i].filelen);
4127                 if (i == Q2LUMP_VISIBILITY || i == Q2LUMP_LEAFS || i == Q2LUMP_NODES)
4128                         continue;
4129                 mod->brush.qw_md4sum2 ^= Com_BlockChecksum(mod_base + header->lumps[i].fileofs, header->lumps[i].filelen);
4130         }
4131
4132         Mod_Q2BSP_LoadEntities(&header->lumps[Q2LUMP_ENTITIES]);
4133         Mod_Q2BSP_LoadPlanes(&header->lumps[Q2LUMP_PLANES]);
4134         Mod_Q2BSP_LoadVertices(&header->lumps[Q2LUMP_VERTEXES]);
4135         Mod_Q2BSP_LoadVisibility(&header->lumps[Q2LUMP_VISIBILITY]);
4136         Mod_Q2BSP_LoadNodes(&header->lumps[Q2LUMP_NODES]);
4137         Mod_Q2BSP_LoadTexInfo(&header->lumps[Q2LUMP_TEXINFO]);
4138         Mod_Q2BSP_LoadFaces(&header->lumps[Q2LUMP_FACES]);
4139         Mod_Q2BSP_LoadLighting(&header->lumps[Q2LUMP_LIGHTING]);
4140         Mod_Q2BSP_LoadLeafs(&header->lumps[Q2LUMP_LEAFS]);
4141         Mod_Q2BSP_LoadLeafFaces(&header->lumps[Q2LUMP_LEAFFACES]);
4142         Mod_Q2BSP_LoadLeafBrushes(&header->lumps[Q2LUMP_LEAFBRUSHES]);
4143         Mod_Q2BSP_LoadEdges(&header->lumps[Q2LUMP_EDGES]);
4144         Mod_Q2BSP_LoadSurfEdges(&header->lumps[Q2LUMP_SURFEDGES]);
4145         Mod_Q2BSP_LoadBrushes(&header->lumps[Q2LUMP_BRUSHES]);
4146         Mod_Q2BSP_LoadBrushSides(&header->lumps[Q2LUMP_BRUSHSIDES]);
4147         Mod_Q2BSP_LoadAreas(&header->lumps[Q2LUMP_AREAS]);
4148         Mod_Q2BSP_LoadAreaPortals(&header->lumps[Q2LUMP_AREAPORTALS]);
4149         // LordHavoc: must go last because this makes the submodels
4150         Mod_Q2BSP_LoadModels(&header->lumps[Q2LUMP_MODELS]);
4151 }
4152
4153 static int Mod_Q3BSP_SuperContentsFromNativeContents(dp_model_t *model, int nativecontents);
4154 static int Mod_Q3BSP_NativeContentsFromSuperContents(dp_model_t *model, int supercontents);
4155
4156 static void Mod_Q3BSP_LoadEntities(lump_t *l)
4157 {
4158         const char *data;
4159         char key[128], value[MAX_INPUTLINE];
4160         float v[3];
4161         loadmodel->brushq3.num_lightgrid_cellsize[0] = 64;
4162         loadmodel->brushq3.num_lightgrid_cellsize[1] = 64;
4163         loadmodel->brushq3.num_lightgrid_cellsize[2] = 128;
4164         if (!l->filelen)
4165                 return;
4166         loadmodel->brush.entities = (char *)Mem_Alloc(loadmodel->mempool, l->filelen);
4167         memcpy(loadmodel->brush.entities, mod_base + l->fileofs, l->filelen);
4168         data = loadmodel->brush.entities;
4169         // some Q3 maps override the lightgrid_cellsize with a worldspawn key
4170         if (data && COM_ParseToken_Simple(&data, false, false) && com_token[0] == '{')
4171         {
4172                 while (1)
4173                 {
4174                         if (!COM_ParseToken_Simple(&data, false, false))
4175                                 break; // error
4176                         if (com_token[0] == '}')
4177                                 break; // end of worldspawn
4178                         if (com_token[0] == '_')
4179                                 strlcpy(key, com_token + 1, sizeof(key));
4180                         else
4181                                 strlcpy(key, com_token, sizeof(key));
4182                         while (key[strlen(key)-1] == ' ') // remove trailing spaces
4183                                 key[strlen(key)-1] = 0;
4184                         if (!COM_ParseToken_Simple(&data, false, false))
4185                                 break; // error
4186                         strlcpy(value, com_token, sizeof(value));
4187                         if (!strcmp("gridsize", key))
4188                         {
4189                                 if (sscanf(value, "%f %f %f", &v[0], &v[1], &v[2]) == 3 && v[0] != 0 && v[1] != 0 && v[2] != 0)
4190                                         VectorCopy(v, loadmodel->brushq3.num_lightgrid_cellsize);
4191                         }
4192                 }
4193         }
4194 }
4195
4196 static void Mod_Q3BSP_LoadTextures(lump_t *l)
4197 {
4198         q3dtexture_t *in;
4199         texture_t *out;
4200         int i, count;
4201
4202         in = (q3dtexture_t *)(mod_base + l->fileofs);
4203         if (l->filelen % sizeof(*in))
4204                 Host_Error("Mod_Q3BSP_LoadTextures: funny lump size in %s",loadmodel->name);
4205         count = l->filelen / sizeof(*in);
4206         out = (texture_t *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
4207
4208         loadmodel->data_textures = out;
4209         loadmodel->num_textures = count;
4210         loadmodel->num_texturesperskin = loadmodel->num_textures;
4211
4212         for (i = 0;i < count;i++)
4213         {
4214                 strlcpy (out[i].name, in[i].name, sizeof (out[i].name));
4215                 out[i].surfaceflags = LittleLong(in[i].surfaceflags);
4216                 out[i].supercontents = Mod_Q3BSP_SuperContentsFromNativeContents(loadmodel, LittleLong(in[i].contents));
4217         }
4218
4219         if (cls.state == ca_dedicated)
4220                 return;
4221
4222         for (i = 0;i < count;i++, in++, out++)
4223                 Mod_LoadTextureFromQ3Shader(out, out->name, true, true, TEXF_MIPMAP | TEXF_ALPHA | TEXF_PRECACHE | (r_picmipworld.integer ? TEXF_PICMIP : 0) | TEXF_COMPRESS);
4224 }
4225
4226 static void Mod_Q3BSP_LoadPlanes(lump_t *l)
4227 {
4228         q3dplane_t *in;
4229         mplane_t *out;
4230         int i, count;
4231
4232         in = (q3dplane_t *)(mod_base + l->fileofs);
4233         if (l->filelen % sizeof(*in))
4234                 Host_Error("Mod_Q3BSP_LoadPlanes: funny lump size in %s",loadmodel->name);
4235         count = l->filelen / sizeof(*in);
4236         out = (mplane_t *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
4237
4238         loadmodel->brush.data_planes = out;
4239         loadmodel->brush.num_planes = count;
4240
4241         for (i = 0;i < count;i++, in++, out++)
4242         {
4243                 out->normal[0] = LittleFloat(in->normal[0]);
4244                 out->normal[1] = LittleFloat(in->normal[1]);
4245                 out->normal[2] = LittleFloat(in->normal[2]);
4246                 out->dist = LittleFloat(in->dist);
4247                 PlaneClassify(out);
4248         }
4249 }
4250
4251 static void Mod_Q3BSP_LoadBrushSides(lump_t *l)
4252 {
4253         q3dbrushside_t *in;
4254         q3mbrushside_t *out;
4255         int i, n, count;
4256
4257         in = (q3dbrushside_t *)(mod_base + l->fileofs);
4258         if (l->filelen % sizeof(*in))
4259                 Host_Error("Mod_Q3BSP_LoadBrushSides: funny lump size in %s",loadmodel->name);
4260         count = l->filelen / sizeof(*in);
4261         out = (q3mbrushside_t *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
4262
4263         loadmodel->brush.data_brushsides = out;
4264         loadmodel->brush.num_brushsides = count;
4265
4266         for (i = 0;i < count;i++, in++, out++)
4267         {
4268                 n = LittleLong(in->planeindex);
4269                 if (n < 0 || n >= loadmodel->brush.num_planes)
4270                         Host_Error("Mod_Q3BSP_LoadBrushSides: invalid planeindex %i (%i planes)", n, loadmodel->brush.num_planes);
4271                 out->plane = loadmodel->brush.data_planes + n;
4272                 n = LittleLong(in->textureindex);
4273                 if (n < 0 || n >= loadmodel->num_textures)
4274                         Host_Error("Mod_Q3BSP_LoadBrushSides: invalid textureindex %i (%i textures)", n, loadmodel->num_textures);
4275                 out->texture = loadmodel->data_textures + n;
4276         }
4277 }
4278
4279 static void Mod_Q3BSP_LoadBrushes(lump_t *l)
4280 {
4281         q3dbrush_t *in;
4282         q3mbrush_t *out;
4283         int i, j, n, c, count, maxplanes;
4284         colplanef_t *planes;
4285
4286         in = (q3dbrush_t *)(mod_base + l->fileofs);
4287         if (l->filelen % sizeof(*in))
4288                 Host_Error("Mod_Q3BSP_LoadBrushes: funny lump size in %s",loadmodel->name);
4289         count = l->filelen / sizeof(*in);
4290         out = (q3mbrush_t *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
4291
4292         loadmodel->brush.data_brushes = out;
4293         loadmodel->brush.num_brushes = count;
4294
4295         maxplanes = 0;
4296         planes = NULL;
4297
4298         for (i = 0;i < count;i++, in++, out++)
4299         {
4300                 n = LittleLong(in->firstbrushside);
4301                 c = LittleLong(in->numbrushsides);
4302                 if (n < 0 || n + c > loadmodel->brush.num_brushsides)
4303                         Host_Error("Mod_Q3BSP_LoadBrushes: invalid brushside range %i : %i (%i brushsides)", n, n + c, loadmodel->brush.num_brushsides);
4304                 out->firstbrushside = loadmodel->brush.data_brushsides + n;
4305                 out->numbrushsides = c;
4306                 n = LittleLong(in->textureindex);
4307                 if (n < 0 || n >= loadmodel->num_textures)
4308                         Host_Error("Mod_Q3BSP_LoadBrushes: invalid textureindex %i (%i textures)", n, loadmodel->num_textures);
4309                 out->texture = loadmodel->data_textures + n;
4310
4311                 // make a list of mplane_t structs to construct a colbrush from
4312                 if (maxplanes < out->numbrushsides)
4313                 {
4314                         maxplanes = out->numbrushsides;
4315                         if (planes)
4316                                 Mem_Free(planes);
4317                         planes = (colplanef_t *)Mem_Alloc(tempmempool, sizeof(colplanef_t) * maxplanes);
4318                 }
4319                 for (j = 0;j < out->numbrushsides;j++)
4320                 {
4321                         VectorCopy(out->firstbrushside[j].plane->normal, planes[j].normal);
4322                         planes[j].dist = out->firstbrushside[j].plane->dist;
4323                         planes[j].q3surfaceflags = out->firstbrushside[j].texture->surfaceflags;
4324                         planes[j].texture = out->firstbrushside[j].texture;
4325                 }
4326                 // make the colbrush from the planes
4327                 out->colbrushf = Collision_NewBrushFromPlanes(loadmodel->mempool, out->numbrushsides, planes, out->texture->supercontents);
4328         }
4329         if (planes)
4330                 Mem_Free(planes);
4331 }
4332
4333 static void Mod_Q3BSP_LoadEffects(lump_t *l)
4334 {
4335         q3deffect_t *in;
4336         q3deffect_t *out;
4337         int i, n, count;
4338
4339         in = (q3deffect_t *)(mod_base + l->fileofs);
4340         if (l->filelen % sizeof(*in))
4341                 Host_Error("Mod_Q3BSP_LoadEffects: funny lump size in %s",loadmodel->name);
4342         count = l->filelen / sizeof(*in);
4343         out = (q3deffect_t *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
4344
4345         loadmodel->brushq3.data_effects = out;
4346         loadmodel->brushq3.num_effects = count;
4347
4348         for (i = 0;i < count;i++, in++, out++)
4349         {
4350                 strlcpy (out->shadername, in->shadername, sizeof (out->shadername));
4351                 n = LittleLong(in->brushindex);
4352                 if (n >= loadmodel->brush.num_brushes)
4353                 {
4354                         Con_Printf("Mod_Q3BSP_LoadEffects: invalid brushindex %i (%i brushes), setting to -1\n", n, loadmodel->brush.num_brushes);
4355                         n = -1;
4356                 }
4357                 out->brushindex = n;
4358                 out->unknown = LittleLong(in->unknown);
4359         }
4360 }
4361
4362 static void Mod_Q3BSP_LoadVertices(lump_t *l)
4363 {
4364         q3dvertex_t *in;
4365         int i, count;
4366
4367         in = (q3dvertex_t *)(mod_base + l->fileofs);
4368         if (l->filelen % sizeof(*in))
4369                 Host_Error("Mod_Q3BSP_LoadVertices: funny lump size in %s",loadmodel->name);
4370         loadmodel->brushq3.num_vertices = count = l->filelen / sizeof(*in);
4371         loadmodel->brushq3.data_vertex3f = (float *)Mem_Alloc(loadmodel->mempool, count * (sizeof(float) * (3 + 3 + 2 + 2 + 4)));
4372         loadmodel->brushq3.data_normal3f = loadmodel->brushq3.data_vertex3f + count * 3;
4373         loadmodel->brushq3.data_texcoordtexture2f = loadmodel->brushq3.data_normal3f + count * 3;
4374         loadmodel->brushq3.data_texcoordlightmap2f = loadmodel->brushq3.data_texcoordtexture2f + count * 2;
4375         loadmodel->brushq3.data_color4f = loadmodel->brushq3.data_texcoordlightmap2f + count * 2;
4376
4377         for (i = 0;i < count;i++, in++)
4378         {
4379                 loadmodel->brushq3.data_vertex3f[i * 3 + 0] = LittleFloat(in->origin3f[0]);
4380                 loadmodel->brushq3.data_vertex3f[i * 3 + 1] = LittleFloat(in->origin3f[1]);
4381                 loadmodel->brushq3.data_vertex3f[i * 3 + 2] = LittleFloat(in->origin3f[2]);
4382                 loadmodel->brushq3.data_normal3f[i * 3 + 0] = LittleFloat(in->normal3f[0]);
4383                 loadmodel->brushq3.data_normal3f[i * 3 + 1] = LittleFloat(in->normal3f[1]);
4384                 loadmodel->brushq3.data_normal3f[i * 3 + 2] = LittleFloat(in->normal3f[2]);
4385                 loadmodel->brushq3.data_texcoordtexture2f[i * 2 + 0] = LittleFloat(in->texcoord2f[0]);
4386                 loadmodel->brushq3.data_texcoordtexture2f[i * 2 + 1] = LittleFloat(in->texcoord2f[1]);
4387                 loadmodel->brushq3.data_texcoordlightmap2f[i * 2 + 0] = LittleFloat(in->lightmap2f[0]);
4388                 loadmodel->brushq3.data_texcoordlightmap2f[i * 2 + 1] = LittleFloat(in->lightmap2f[1]);
4389                 // svector/tvector are calculated later in face loading
4390                 loadmodel->brushq3.data_color4f[i * 4 + 0] = in->color4ub[0] * (1.0f / 255.0f);
4391                 loadmodel->brushq3.data_color4f[i * 4 + 1] = in->color4ub[1] * (1.0f / 255.0f);
4392                 loadmodel->brushq3.data_color4f[i * 4 + 2] = in->color4ub[2] * (1.0f / 255.0f);
4393                 loadmodel->brushq3.data_color4f[i * 4 + 3] = in->color4ub[3] * (1.0f / 255.0f);
4394         }
4395 }
4396
4397 static void Mod_Q3BSP_LoadTriangles(lump_t *l)
4398 {
4399         int *in;
4400         int *out;
4401         int i, count;
4402
4403         in = (int *)(mod_base + l->fileofs);
4404         if (l->filelen % sizeof(int[3]))
4405                 Host_Error("Mod_Q3BSP_LoadTriangles: funny lump size in %s",loadmodel->name);
4406         count = l->filelen / sizeof(*in);
4407         out = (int *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
4408
4409         loadmodel->brushq3.num_triangles = count / 3;
4410         loadmodel->brushq3.data_element3i = out;
4411
4412         for (i = 0;i < count;i++, in++, out++)
4413         {
4414                 *out = LittleLong(*in);
4415                 if (*out < 0 || *out >= loadmodel->brushq3.num_vertices)
4416                 {
4417                         Con_Printf("Mod_Q3BSP_LoadTriangles: invalid vertexindex %i (%i vertices), setting to 0\n", *out, loadmodel->brushq3.num_vertices);
4418                         *out = 0;
4419                 }
4420         }
4421 }
4422
4423 static void Mod_Q3BSP_LoadLightmaps(lump_t *l, lump_t *faceslump)
4424 {
4425         q3dlightmap_t *in;
4426         int i, j, k, count, power, power2, mask, endlightmap, mergewidth, mergeheight;
4427         unsigned char *c;
4428         unsigned char convertedpixels[128*128*4];
4429
4430         if (!l->filelen)
4431                 return;
4432         if (cls.state == ca_dedicated)
4433                 return;
4434         in = (q3dlightmap_t *)(mod_base + l->fileofs);
4435         if (l->filelen % sizeof(*in))
4436                 Host_Error("Mod_Q3BSP_LoadLightmaps: funny lump size in %s",loadmodel->name);
4437         count = l->filelen / sizeof(*in);
4438         loadmodel->brushq3.num_originallightmaps = count;
4439
4440         // now check the surfaces to see if any of them index an odd numbered
4441         // lightmap, if so this is not a deluxemapped bsp file
4442         //
4443         // also check what lightmaps are actually used, because q3map2 sometimes
4444         // (always?) makes an unused one at the end, which
4445         // q3map2 sometimes (or always?) makes a second blank lightmap for no
4446         // reason when only one lightmap is used, which can throw off the
4447         // deluxemapping detection method, so check 2-lightmap bsp's specifically
4448         // to see if the second lightmap is blank, if so it is not deluxemapped.
4449         loadmodel->brushq3.deluxemapping = !(count & 1);
4450         loadmodel->brushq3.deluxemapping_modelspace = true;
4451         endlightmap = 0;
4452         if (loadmodel->brushq3.deluxemapping)
4453         {
4454                 int facecount = faceslump->filelen / sizeof(q3dface_t);
4455                 q3dface_t *faces = (q3dface_t *)(mod_base + faceslump->fileofs);
4456                 for (i = 0;i < facecount;i++)
4457                 {
4458                         j = LittleLong(faces[i].lightmapindex);
4459                         if (j >= 0)
4460                         {
4461                                 endlightmap = max(endlightmap, j + 1);
4462                                 if ((j & 1) || j + 1 >= count)
4463                                 {
4464                                         loadmodel->brushq3.deluxemapping = false;
4465                                         break;
4466                                 }
4467                         }
4468                 }
4469         }
4470
4471         // q3map2 sometimes (or always?) makes a second blank lightmap for no
4472         // reason when only one lightmap is used, which can throw off the
4473         // deluxemapping detection method, so check 2-lightmap bsp's specifically
4474         // to see if the second lightmap is blank, if so it is not deluxemapped.
4475         //
4476         // further research has shown q3map2 sometimes creates a deluxemap and two
4477         // blank lightmaps, which must be handled properly as well
4478         if (endlightmap == 1 && count > 1)
4479         {
4480                 c = in[1].rgb;
4481                 for (i = 0;i < 128*128*3;i++)
4482                         if (c[i])
4483                                 break;
4484                 if (i == 128*128*3)
4485                 {
4486                         // all pixels in the unused lightmap were black...
4487                         loadmodel->brushq3.deluxemapping = false;
4488                 }
4489         }
4490
4491         Con_DPrintf("%s is %sdeluxemapped\n", loadmodel->name, loadmodel->brushq3.deluxemapping ? "" : "not ");
4492
4493         // figure out what the most reasonable merge power is within limits
4494         loadmodel->brushq3.num_lightmapmergepower = 0;
4495         for (power = 1;power <= mod_q3bsp_lightmapmergepower.integer && (128 << power) <= gl_max_texture_size && (1 << (power * 2)) < 4 * (count >> loadmodel->brushq3.deluxemapping);power++)
4496                 loadmodel->brushq3.num_lightmapmergepower = power;
4497         loadmodel->brushq3.num_lightmapmerge = 1 << loadmodel->brushq3.num_lightmapmergepower;
4498
4499         loadmodel->brushq3.num_mergedlightmaps = ((count >> loadmodel->brushq3.deluxemapping) + (1 << (loadmodel->brushq3.num_lightmapmergepower * 2)) - 1) >> (loadmodel->brushq3.num_lightmapmergepower * 2);
4500         loadmodel->brushq3.data_lightmaps = (rtexture_t **)Mem_Alloc(loadmodel->mempool, loadmodel->brushq3.num_mergedlightmaps * sizeof(rtexture_t *));
4501         if (loadmodel->brushq3.deluxemapping)
4502                 loadmodel->brushq3.data_deluxemaps = (rtexture_t **)Mem_Alloc(loadmodel->mempool, loadmodel->brushq3.num_mergedlightmaps * sizeof(rtexture_t *));
4503
4504         // allocate a texture pool if we need it
4505         if (loadmodel->texturepool == NULL && cls.state != ca_dedicated)
4506                 loadmodel->texturepool = R_AllocTexturePool();
4507
4508         power = loadmodel->brushq3.num_lightmapmergepower;
4509         power2 = power * 2;
4510         mask = (1 << power) - 1;
4511         for (i = 0;i < count;i++)
4512         {
4513                 // figure out which merged lightmap texture this fits into
4514                 int lightmapindex = i >> (loadmodel->brushq3.deluxemapping + power2);
4515                 for (k = 0;k < 128*128;k++)
4516                 {
4517                         convertedpixels[k*4+2] = in[i].rgb[k*3+0];
4518                         convertedpixels[k*4+1] = in[i].rgb[k*3+1];
4519                         convertedpixels[k*4+0] = in[i].rgb[k*3+2];
4520                         convertedpixels[k*4+3] = 255;
4521                 }
4522                 if (loadmodel->brushq3.num_lightmapmergepower > 0)
4523                 {
4524                         // if the lightmap has not been allocated yet, create it
4525                         if (!loadmodel->brushq3.data_lightmaps[lightmapindex])
4526                         {
4527                                 // create a lightmap only as large as necessary to hold the
4528                                 // remaining 128x128 blocks
4529                                 // if there are multiple merged lightmap textures then they will
4530                                 // all be full size except the last one which may be smaller
4531                                 // because it only needs to the remaining blocks, and it will often
4532                                 // be odd sizes like 2048x512 due to only being 25% full or so.
4533                                 j = (count >> loadmodel->brushq3.deluxemapping) - (lightmapindex << power2);
4534                                 for (mergewidth = 1;mergewidth < j && mergewidth < (1 << power);mergewidth *= 2)
4535                                         ;
4536                                 for (mergeheight = 1;mergewidth*mergeheight < j && mergeheight < (1 << power);mergeheight *= 2)
4537                                         ;
4538                                 if (developer_loading.integer)
4539                                         Con_Printf("lightmap merge texture #%i is %ix%i (%i of %i used)\n", lightmapindex, mergewidth*128, mergeheight*128, min(j, mergewidth*mergeheight), mergewidth*mergeheight);
4540                                 loadmodel->brushq3.data_lightmaps[lightmapindex] = R_LoadTexture2D(loadmodel->texturepool, va("lightmap%04i", lightmapindex), mergewidth * 128, mergeheight * 128, NULL, TEXTYPE_BGRA, TEXF_FORCELINEAR | TEXF_PRECACHE | (gl_texturecompression_q3bsplightmaps.integer ? TEXF_COMPRESS : 0), NULL);
4541                                 if (loadmodel->brushq3.data_deluxemaps)
4542                                         loadmodel->brushq3.data_deluxemaps[lightmapindex] = R_LoadTexture2D(loadmodel->texturepool, va("deluxemap%04i", lightmapindex), mergewidth * 128, mergeheight * 128, NULL, TEXTYPE_BGRA, TEXF_FORCELINEAR | TEXF_PRECACHE | (gl_texturecompression_q3bspdeluxemaps.integer ? TEXF_COMPRESS : 0), NULL);
4543                         }
4544                         mergewidth = R_TextureWidth(loadmodel->brushq3.data_lightmaps[lightmapindex]) / 128;
4545                         mergeheight = R_TextureHeight(loadmodel->brushq3.data_lightmaps[lightmapindex]) / 128;
4546                         j = (i >> loadmodel->brushq3.deluxemapping) & ((1 << power2) - 1);
4547                         if (loadmodel->brushq3.deluxemapping && (i & 1))
4548                                 R_UpdateTexture(loadmodel->brushq3.data_deluxemaps[lightmapindex], convertedpixels, (j % mergewidth) * 128, (j / mergewidth) * 128, 128, 128);
4549                         else
4550                                 R_UpdateTexture(loadmodel->brushq3.data_lightmaps [lightmapindex], convertedpixels, (j % mergewidth) * 128, (j / mergewidth) * 128, 128, 128);
4551                 }
4552                 else
4553                 {
4554                         // figure out which merged lightmap texture this fits into
4555                         if (loadmodel->brushq3.deluxemapping && (i & 1))
4556                                 loadmodel->brushq3.data_deluxemaps[lightmapindex] = R_LoadTexture2D(loadmodel->texturepool, va("deluxemap%04i", lightmapindex), 128, 128, convertedpixels, TEXTYPE_BGRA, TEXF_FORCELINEAR | TEXF_PRECACHE | (gl_texturecompression_q3bspdeluxemaps.integer ? TEXF_COMPRESS : 0), NULL);
4557                         else
4558                                 loadmodel->brushq3.data_lightmaps [lightmapindex] = R_LoadTexture2D(loadmodel->texturepool, va("lightmap%04i", lightmapindex), 128, 128, convertedpixels, TEXTYPE_BGRA, TEXF_FORCELINEAR | TEXF_PRECACHE | (gl_texturecompression_q3bsplightmaps.integer ? TEXF_COMPRESS : 0), NULL);
4559                 }
4560         }
4561 }
4562
4563 static void Mod_Q3BSP_LoadFaces(lump_t *l)
4564 {
4565         q3dface_t *in, *oldin;
4566         msurface_t *out, *oldout;
4567         int i, oldi, j, n, count, invalidelements, patchsize[2], finalwidth, finalheight, xtess, ytess, finalvertices, finaltriangles, firstvertex, firstelement, type, oldnumtriangles, oldnumtriangles2, meshvertices, meshtriangles, numvertices, numtriangles;
4568         float lightmaptcbase[2], lightmaptcscale[2];
4569         //int *originalelement3i;
4570         //int *originalneighbor3i;
4571         float *originalvertex3f;
4572         //float *originalsvector3f;
4573         //float *originaltvector3f;
4574         float *originalnormal3f;
4575         float *originalcolor4f;
4576         float *originaltexcoordtexture2f;
4577         float *originaltexcoordlightmap2f;
4578         float *v;
4579
4580         in = (q3dface_t *)(mod_base + l->fileofs);
4581         if (l->filelen % sizeof(*in))
4582                 Host_Error("Mod_Q3BSP_LoadFaces: funny lump size in %s",loadmodel->name);
4583         count = l->filelen / sizeof(*in);
4584         out = (msurface_t *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
4585
4586         loadmodel->data_surfaces = out;
4587         loadmodel->num_surfaces = count;
4588
4589         i = 0;
4590         oldi = i;
4591         oldin = in;
4592         oldout = out;
4593         meshvertices = 0;
4594         meshtriangles = 0;
4595         for (;i < count;i++, in++, out++)
4596         {
4597                 // check face type first
4598                 type = LittleLong(in->type);
4599                 if (type != Q3FACETYPE_FLAT
4600                  && type != Q3FACETYPE_PATCH
4601                  && type != Q3FACETYPE_MESH
4602                  && type != Q3FACETYPE_FLARE)
4603                 {
4604                         Con_DPrintf("Mod_Q3BSP_LoadFaces: face #%i: unknown face type %i\n", i, type);
4605                         continue;
4606                 }
4607
4608                 n = LittleLong(in->textureindex);
4609                 if (n < 0 || n >= loadmodel->num_textures)
4610                 {
4611                         Con_DPrintf("Mod_Q3BSP_LoadFaces: face #%i: invalid textureindex %i (%i textures)\n", i, n, loadmodel->num_textures);
4612                         continue;
4613                 }
4614                 out->texture = loadmodel->data_textures + n;
4615                 n = LittleLong(in->effectindex);
4616                 if (n < -1 || n >= loadmodel->brushq3.num_effects)
4617                 {
4618                         if (developer.integer >= 100)
4619                                 Con_Printf("Mod_Q3BSP_LoadFaces: face #%i (texture \"%s\"): invalid effectindex %i (%i effects)\n", i, out->texture->name, n, loadmodel->brushq3.num_effects);
4620                         n = -1;
4621                 }
4622                 if (n == -1)
4623                         out->effect = NULL;
4624                 else
4625                         out->effect = loadmodel->brushq3.data_effects + n;
4626
4627                 if (cls.state != ca_dedicated)
4628                 {
4629                         out->lightmaptexture = NULL;
4630                         out->deluxemaptexture = r_texture_blanknormalmap;
4631                         n = LittleLong(in->lightmapindex);
4632                         if (n < 0)
4633                                 n = -1;
4634                         else if (n >= loadmodel->brushq3.num_originallightmaps)
4635                         {
4636                                 Con_Printf("Mod_Q3BSP_LoadFaces: face #%i (texture \"%s\"): invalid lightmapindex %i (%i lightmaps)\n", i, out->texture->name, n, loadmodel->brushq3.num_originallightmaps);
4637                                 n = -1;
4638                         }
4639                         else
4640                         {
4641                                 out->lightmaptexture = loadmodel->brushq3.data_lightmaps[n >> (loadmodel->brushq3.num_lightmapmergepower * 2 + loadmodel->brushq3.deluxemapping)];
4642                                 if (loadmodel->brushq3.deluxemapping)
4643                                         out->deluxemaptexture = loadmodel->brushq3.data_deluxemaps[n >> (loadmodel->brushq3.num_lightmapmergepower * 2 + loadmodel->brushq3.deluxemapping)];
4644                         }
4645                 }
4646
4647                 firstvertex = LittleLong(in->firstvertex);
4648                 numvertices = LittleLong(in->numvertices);
4649                 firstelement = LittleLong(in->firstelement);
4650                 numtriangles = LittleLong(in->numelements) / 3;
4651                 if (numtriangles * 3 != LittleLong(in->numelements))
4652                 {
4653                         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));
4654                         continue;
4655                 }
4656                 if (firstvertex < 0 || firstvertex + numvertices > loadmodel->brushq3.num_vertices)
4657                 {
4658                         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);
4659                         continue;
4660                 }
4661                 if (firstelement < 0 || firstelement + numtriangles * 3 > loadmodel->brushq3.num_triangles * 3)
4662                 {
4663                         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);
4664                         continue;
4665                 }
4666                 switch(type)
4667                 {
4668                 case Q3FACETYPE_FLAT:
4669                 case Q3FACETYPE_MESH:
4670                         // no processing necessary
4671                         break;
4672                 case Q3FACETYPE_PATCH:
4673                         patchsize[0] = LittleLong(in->specific.patch.patchsize[0]);
4674                         patchsize[1] = LittleLong(in->specific.patch.patchsize[1]);
4675                         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))
4676                         {
4677                                 Con_Printf("Mod_Q3BSP_LoadFaces: face #%i (texture \"%s\"): invalid patchsize %ix%i\n", i, out->texture->name, patchsize[0], patchsize[1]);
4678                                 continue;
4679                         }
4680                         originalvertex3f = loadmodel->brushq3.data_vertex3f + firstvertex * 3;
4681                         // convert patch to Q3FACETYPE_MESH
4682                         xtess = Q3PatchTesselationOnX(patchsize[0], patchsize[1], 3, originalvertex3f, r_subdivisions_tolerance.value);
4683                         ytess = Q3PatchTesselationOnY(patchsize[0], patchsize[1], 3, originalvertex3f, r_subdivisions_tolerance.value);
4684                         // bound to user settings
4685                         xtess = bound(r_subdivisions_mintess.integer, xtess, r_subdivisions_maxtess.integer);
4686                         ytess = bound(r_subdivisions_mintess.integer, ytess, r_subdivisions_maxtess.integer);
4687                         // bound to sanity settings
4688                         xtess = bound(1, xtess, 1024);
4689                         ytess = bound(1, ytess, 1024);
4690                         // bound to user limit on vertices
4691                         while ((xtess > 1 || ytess > 1) && (((patchsize[0] - 1) * xtess) + 1) * (((patchsize[1] - 1) * ytess) + 1) > min(r_subdivisions_maxvertices.integer, 262144))
4692                         {
4693                                 if (xtess > ytess)
4694                                         xtess--;
4695                                 else
4696                                         ytess--;
4697                         }
4698                         finalwidth = ((patchsize[0] - 1) * xtess) + 1;
4699                         finalheight = ((patchsize[1] - 1) * ytess) + 1;
4700                         numvertices = finalwidth * finalheight;
4701                         numtriangles = (finalwidth - 1) * (finalheight - 1) * 2;
4702                         break;
4703                 case Q3FACETYPE_FLARE:
4704                         if (developer.integer >= 100)
4705                                 Con_Printf("Mod_Q3BSP_LoadFaces: face #%i (texture \"%s\"): Q3FACETYPE_FLARE not supported (yet)\n", i, out->texture->name);
4706                         // don't render it
4707                         continue;
4708                 }
4709                 out->num_vertices = numvertices;
4710                 out->num_triangles = numtriangles;
4711                 meshvertices += out->num_vertices;
4712                 meshtriangles += out->num_triangles;
4713         }
4714
4715         i = oldi;
4716         in = oldin;
4717         out = oldout;
4718         Mod_AllocSurfMesh(loadmodel->mempool, meshvertices, meshtriangles, false, true, false);
4719         meshvertices = 0;
4720         meshtriangles = 0;
4721         for (;i < count && meshvertices + out->num_vertices <= loadmodel->surfmesh.num_vertices;i++, in++, out++)
4722         {
4723                 if (out->num_vertices < 3 || out->num_triangles < 1)
4724                         continue;
4725
4726                 type = LittleLong(in->type);
4727                 firstvertex = LittleLong(in->firstvertex);
4728                 firstelement = LittleLong(in->firstelement);
4729                 out->num_firstvertex = meshvertices;
4730                 out->num_firsttriangle = meshtriangles;
4731                 switch(type)
4732                 {
4733                 case Q3FACETYPE_FLAT:
4734                 case Q3FACETYPE_MESH:
4735                         // no processing necessary, except for lightmap merging
4736                         for (j = 0;j < out->num_vertices;j++)
4737                         {
4738                                 (loadmodel->surfmesh.data_vertex3f + 3 * out->num_firstvertex)[j * 3 + 0] = loadmodel->brushq3.data_vertex3f[(firstvertex + j) * 3 + 0];
4739                                 (loadmodel->surfmesh.data_vertex3f + 3 * out->num_firstvertex)[j * 3 + 1] = loadmodel->brushq3.data_vertex3f[(firstvertex + j) * 3 + 1];
4740                                 (loadmodel->surfmesh.data_vertex3f + 3 * out->num_firstvertex)[j * 3 + 2] = loadmodel->brushq3.data_vertex3f[(firstvertex + j) * 3 + 2];
4741                                 (loadmodel->surfmesh.data_normal3f + 3 * out->num_firstvertex)[j * 3 + 0] = loadmodel->brushq3.data_normal3f[(firstvertex + j) * 3 + 0];
4742                                 (loadmodel->surfmesh.data_normal3f + 3 * out->num_firstvertex)[j * 3 + 1] = loadmodel->brushq3.data_normal3f[(firstvertex + j) * 3 + 1];
4743                                 (loadmodel->surfmesh.data_normal3f + 3 * out->num_firstvertex)[j * 3 + 2] = loadmodel->brushq3.data_normal3f[(firstvertex + j) * 3 + 2];
4744                                 (loadmodel->surfmesh.data_texcoordtexture2f + 2 * out->num_firstvertex)[j * 2 + 0] = loadmodel->brushq3.data_texcoordtexture2f[(firstvertex + j) * 2 + 0];
4745                                 (loadmodel->surfmesh.data_texcoordtexture2f + 2 * out->num_firstvertex)[j * 2 + 1] = loadmodel->brushq3.data_texcoordtexture2f[(firstvertex + j) * 2 + 1];
4746                                 (loadmodel->surfmesh.data_texcoordlightmap2f + 2 * out->num_firstvertex)[j * 2 + 0] = loadmodel->brushq3.data_texcoordlightmap2f[(firstvertex + j) * 2 + 0];
4747                                 (loadmodel->surfmesh.data_texcoordlightmap2f + 2 * out->num_firstvertex)[j * 2 + 1] = loadmodel->brushq3.data_texcoordlightmap2f[(firstvertex + j) * 2 + 1];
4748                                 (loadmodel->surfmesh.data_lightmapcolor4f + 4 * out->num_firstvertex)[j * 4 + 0] = loadmodel->brushq3.data_color4f[(firstvertex + j) * 4 + 0];
4749                                 (loadmodel->surfmesh.data_lightmapcolor4f + 4 * out->num_firstvertex)[j * 4 + 1] = loadmodel->brushq3.data_color4f[(firstvertex + j) * 4 + 1];
4750                                 (loadmodel->surfmesh.data_lightmapcolor4f + 4 * out->num_firstvertex)[j * 4 + 2] = loadmodel->brushq3.data_color4f[(firstvertex + j) * 4 + 2];
4751                                 (loadmodel->surfmesh.data_lightmapcolor4f + 4 * out->num_firstvertex)[j * 4 + 3] = loadmodel->brushq3.data_color4f[(firstvertex + j) * 4 + 3];
4752                         }
4753                         for (j = 0;j < out->num_triangles*3;j++)
4754                                 (loadmodel->surfmesh.data_element3i + 3 * out->num_firsttriangle)[j] = loadmodel->brushq3.data_element3i[firstelement + j] + out->num_firstvertex;
4755                         break;
4756                 case Q3FACETYPE_PATCH:
4757                         patchsize[0] = LittleLong(in->specific.patch.patchsize[0]);
4758                         patchsize[1] = LittleLong(in->specific.patch.patchsize[1]);
4759                         originalvertex3f = loadmodel->brushq3.data_vertex3f + firstvertex * 3;
4760                         originalnormal3f = loadmodel->brushq3.data_normal3f + firstvertex * 3;
4761                         originaltexcoordtexture2f = loadmodel->brushq3.data_texcoordtexture2f + firstvertex * 2;
4762                         originaltexcoordlightmap2f = loadmodel->brushq3.data_texcoordlightmap2f + firstvertex * 2;
4763                         originalcolor4f = loadmodel->brushq3.data_color4f + firstvertex * 4;
4764                         // convert patch to Q3FACETYPE_MESH
4765                         xtess = Q3PatchTesselationOnX(patchsize[0], patchsize[1], 3, originalvertex3f, r_subdivisions_tolerance.value);
4766                         ytess = Q3PatchTesselationOnY(patchsize[0], patchsize[1], 3, originalvertex3f, r_subdivisions_tolerance.value);
4767                         // bound to user settings
4768                         xtess = bound(r_subdivisions_mintess.integer, xtess, r_subdivisions_maxtess.integer);
4769                         ytess = bound(r_subdivisions_mintess.integer, ytess, r_subdivisions_maxtess.integer);
4770                         // bound to sanity settings
4771                         xtess = bound(1, xtess, 1024);
4772                         ytess = bound(1, ytess, 1024);
4773                         // bound to user limit on vertices
4774                         while ((xtess > 1 || ytess > 1) && (((patchsize[0] - 1) * xtess) + 1) * (((patchsize[1] - 1) * ytess) + 1) > min(r_subdivisions_maxvertices.integer, 262144))
4775                         {
4776                                 if (xtess > ytess)
4777                                         xtess--;
4778                                 else
4779                                         ytess--;
4780                         }
4781                         finalwidth = ((patchsize[0] - 1) * xtess) + 1;
4782                         finalheight = ((patchsize[1] - 1) * ytess) + 1;
4783                         finalvertices = finalwidth * finalheight;
4784                         finaltriangles = (finalwidth - 1) * (finalheight - 1) * 2;
4785                         type = Q3FACETYPE_MESH;
4786                         // generate geometry
4787                         // (note: normals are skipped because they get recalculated)
4788                         Q3PatchTesselateFloat(3, sizeof(float[3]), (loadmodel->surfmesh.data_vertex3f + 3 * out->num_firstvertex), patchsize[0], patchsize[1], sizeof(float[3]), originalvertex3f, xtess, ytess);
4789                         Q3PatchTesselateFloat(3, sizeof(float[3]), (loadmodel->surfmesh.data_normal3f + 3 * out->num_firstvertex), patchsize[0], patchsize[1], sizeof(float[3]), originalnormal3f, xtess, ytess);
4790                         Q3PatchTesselateFloat(2, sizeof(float[2]), (loadmodel->surfmesh.data_texcoordtexture2f + 2 * out->num_firstvertex), patchsize[0], patchsize[1], sizeof(float[2]), originaltexcoordtexture2f, xtess, ytess);
4791                         Q3PatchTesselateFloat(2, sizeof(float[2]), (loadmodel->surfmesh.data_texcoordlightmap2f + 2 * out->num_firstvertex), patchsize[0], patchsize[1], sizeof(float[2]), originaltexcoordlightmap2f, xtess, ytess);
4792                         Q3PatchTesselateFloat(4, sizeof(float[4]), (loadmodel->surfmesh.data_lightmapcolor4f + 4 * out->num_firstvertex), patchsize[0], patchsize[1], sizeof(float[4]), originalcolor4f, xtess, ytess);
4793                         Q3PatchTriangleElements((loadmodel->surfmesh.data_element3i + 3 * out->num_firsttriangle), finalwidth, finalheight, out->num_firstvertex);
4794                         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);
4795                         if (developer.integer >= 100)
4796                         {
4797                                 if (out->num_triangles < finaltriangles)
4798                                         Con_Printf("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);
4799                                 else
4800                                         Con_Printf("Mod_Q3BSP_LoadFaces: %ix%i curve subdivided to %i vertices / %i triangles\n", patchsize[0], patchsize[1], out->num_vertices, out->num_triangles);
4801                         }
4802                         // q3map does not put in collision brushes for curves... ugh
4803                         // build the lower quality collision geometry
4804                         xtess = Q3PatchTesselationOnX(patchsize[0], patchsize[1], 3, originalvertex3f, r_subdivisions_collision_tolerance.value);
4805                         ytess = Q3PatchTesselationOnY(patchsize[0], patchsize[1], 3, originalvertex3f, r_subdivisions_collision_tolerance.value);
4806                         // bound to user settings
4807                         xtess = bound(r_subdivisions_collision_mintess.integer, xtess, r_subdivisions_collision_maxtess.integer);
4808                         ytess = bound(r_subdivisions_collision_mintess.integer, ytess, r_subdivisions_collision_maxtess.integer);
4809                         // bound to sanity settings
4810                         xtess = bound(1, xtess, 1024);
4811                         ytess = bound(1, ytess, 1024);
4812                         // bound to user limit on vertices
4813                         while ((xtess > 1 || ytess > 1) && (((patchsize[0] - 1) * xtess) + 1) * (((patchsize[1] - 1) * ytess) + 1) > min(r_subdivisions_collision_maxvertices.integer, 262144))
4814                         {
4815                                 if (xtess > ytess)
4816                                         xtess--;
4817                                 else
4818                                         ytess--;
4819                         }
4820                         finalwidth = ((patchsize[0] - 1) * xtess) + 1;
4821                         finalheight = ((patchsize[1] - 1) * ytess) + 1;
4822                         finalvertices = finalwidth * finalheight;
4823                         finaltriangles = (finalwidth - 1) * (finalheight - 1) * 2;
4824
4825                         out->data_collisionvertex3f = (float *)Mem_Alloc(loadmodel->mempool, sizeof(float[3]) * finalvertices);
4826                         out->data_collisionelement3i = (int *)Mem_Alloc(loadmodel->mempool, sizeof(int[3]) * finaltriangles);
4827                         out->num_collisionvertices = finalvertices;
4828                         out->num_collisiontriangles = finaltriangles;
4829                         Q3PatchTesselateFloat(3, sizeof(float[3]), out->data_collisionvertex3f, patchsize[0], patchsize[1], sizeof(float[3]), originalvertex3f, xtess, ytess);
4830                         Q3PatchTriangleElements(out->data_collisionelement3i, finalwidth, finalheight, 0);
4831
4832                         //Mod_SnapVertices(3, out->num_vertices, (loadmodel->surfmesh.data_vertex3f + 3 * out->num_firstvertex), 0.25);
4833                         Mod_SnapVertices(3, out->num_collisionvertices, out->data_collisionvertex3f, 1);
4834
4835                         oldnumtriangles = out->num_triangles;
4836                         oldnumtriangles2 = out->num_collisiontriangles;
4837                         out->num_collisiontriangles = Mod_RemoveDegenerateTriangles(out->num_collisiontriangles, out->data_collisionelement3i, out->data_collisionelement3i, out->data_collisionvertex3f);
4838                         if (developer.integer >= 100)
4839                                 Con_Printf("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);
4840                         break;
4841                 default:
4842                         break;
4843                 }
4844                 meshvertices += out->num_vertices;
4845                 meshtriangles += out->num_triangles;
4846                 for (j = 0, invalidelements = 0;j < out->num_triangles * 3;j++)
4847                         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)
4848                                 invalidelements++;
4849                 if (invalidelements)
4850                 {
4851                         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);
4852                         for (j = 0;j < out->num_triangles * 3;j++)
4853                         {
4854                                 Con_Printf(" %i", (loadmodel->surfmesh.data_element3i + 3 * out->num_firsttriangle)[j] - out->num_firstvertex);
4855                                 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)
4856                                         (loadmodel->surfmesh.data_element3i + 3 * out->num_firsttriangle)[j] = out->num_firstvertex;
4857                         }
4858                         Con_Print("\n");
4859                 }
4860                 // calculate a bounding box
4861                 VectorClear(out->mins);
4862                 VectorClear(out->maxs);
4863                 if (out->num_vertices)
4864                 {
4865                         if (cls.state != ca_dedicated && out->lightmaptexture)
4866                         {
4867                                 // figure out which part of the merged lightmap this fits into
4868                                 int lightmapindex = LittleLong(in->lightmapindex) >> loadmodel->brushq3.deluxemapping;
4869                                 int mergewidth = R_TextureWidth(out->lightmaptexture) / 128;
4870                                 int mergeheight = R_TextureHeight(out->lightmaptexture) / 128;
4871                                 lightmapindex &= mergewidth * mergeheight - 1;
4872                                 lightmaptcscale[0] = 1.0f / mergewidth;
4873                                 lightmaptcscale[1] = 1.0f / mergeheight;
4874                                 lightmaptcbase[0] = (lightmapindex % mergewidth) * lightmaptcscale[0];
4875                                 lightmaptcbase[1] = (lightmapindex / mergewidth) * lightmaptcscale[1];
4876                                 // modify the lightmap texcoords to match this region of the merged lightmap
4877                                 for (j = 0, v = loadmodel->surfmesh.data_texcoordlightmap2f + 2 * out->num_firstvertex;j < out->num_vertices;j++, v += 2)
4878                                 {
4879                                         v[0] = v[0] * lightmaptcscale[0] + lightmaptcbase[0];
4880                                         v[1] = v[1] * lightmaptcscale[1] + lightmaptcbase[1];
4881                                 }
4882                         }
4883                         VectorCopy((loadmodel->surfmesh.data_vertex3f + 3 * out->num_firstvertex), out->mins);
4884                         VectorCopy((loadmodel->surfmesh.data_vertex3f + 3 * out->num_firstvertex), out->maxs);
4885                         for (j = 1, v = (loadmodel->surfmesh.data_vertex3f + 3 * out->num_firstvertex) + 3;j < out->num_vertices;j++, v += 3)
4886                         {
4887                                 out->mins[0] = min(out->mins[0], v[0]);
4888                                 out->maxs[0] = max(out->maxs[0], v[0]);
4889                                 out->mins[1] = min(out->mins[1], v[1]);
4890                                 out->maxs[1] = max(out->maxs[1], v[1]);
4891                                 out->mins[2] = min(out->mins[2], v[2]);
4892                                 out->maxs[2] = max(out->maxs[2], v[2]);
4893                         }
4894                         out->mins[0] -= 1.0f;
4895                         out->mins[1] -= 1.0f;
4896                         out->mins[2] -= 1.0f;
4897                         out->maxs[0] += 1.0f;
4898                         out->maxs[1] += 1.0f;
4899                         out->maxs[2] += 1.0f;
4900                 }
4901                 // set lightmap styles for consistency with q1bsp
4902                 //out->lightmapinfo->styles[0] = 0;
4903                 //out->lightmapinfo->styles[1] = 255;
4904                 //out->lightmapinfo->styles[2] = 255;
4905                 //out->lightmapinfo->styles[3] = 255;
4906         }
4907
4908         // for per pixel lighting
4909         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);
4910
4911         // generate ushort elements array if possible
4912         if (loadmodel->surfmesh.data_element3s)
4913                 for (i = 0;i < loadmodel->surfmesh.num_triangles*3;i++)
4914                         loadmodel->surfmesh.data_element3s[i] = loadmodel->surfmesh.data_element3i[i];
4915
4916         // free the no longer needed vertex data
4917         loadmodel->brushq3.num_vertices = 0;
4918         if (loadmodel->brushq3.data_vertex3f)
4919                 Mem_Free(loadmodel->brushq3.data_vertex3f);
4920         loadmodel->brushq3.data_vertex3f = NULL;
4921         loadmodel->brushq3.data_normal3f = NULL;
4922         loadmodel->brushq3.data_texcoordtexture2f = NULL;
4923         loadmodel->brushq3.data_texcoordlightmap2f = NULL;
4924         loadmodel->brushq3.data_color4f = NULL;
4925         // free the no longer needed triangle data
4926         loadmodel->brushq3.num_triangles = 0;
4927         if (loadmodel->brushq3.data_element3i)
4928                 Mem_Free(loadmodel->brushq3.data_element3i);
4929         loadmodel->brushq3.data_element3i = NULL;
4930 }
4931
4932 static void Mod_Q3BSP_LoadModels(lump_t *l)
4933 {
4934         q3dmodel_t *in;
4935         q3dmodel_t *out;
4936         int i, j, n, c, count;
4937
4938         in = (q3dmodel_t *)(mod_base + l->fileofs);
4939         if (l->filelen % sizeof(*in))
4940                 Host_Error("Mod_Q3BSP_LoadModels: funny lump size in %s",loadmodel->name);
4941         count = l->filelen / sizeof(*in);
4942         out = (q3dmodel_t *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
4943
4944         loadmodel->brushq3.data_models = out;
4945         loadmodel->brushq3.num_models = count;
4946
4947         for (i = 0;i < count;i++, in++, out++)
4948         {
4949                 for (j = 0;j < 3;j++)
4950                 {
4951                         out->mins[j] = LittleFloat(in->mins[j]);
4952                         out->maxs[j] = LittleFloat(in->maxs[j]);
4953                 }
4954                 n = LittleLong(in->firstface);
4955                 c = LittleLong(in->numfaces);
4956                 if (n < 0 || n + c > loadmodel->num_surfaces)
4957                         Host_Error("Mod_Q3BSP_LoadModels: invalid face range %i : %i (%i faces)", n, n + c, loadmodel->num_surfaces);
4958                 out->firstface = n;
4959                 out->numfaces = c;
4960                 n = LittleLong(in->firstbrush);
4961                 c = LittleLong(in->numbrushes);
4962                 if (n < 0 || n + c > loadmodel->brush.num_brushes)
4963                         Host_Error("Mod_Q3BSP_LoadModels: invalid brush range %i : %i (%i brushes)", n, n + c, loadmodel->brush.num_brushes);
4964                 out->firstbrush = n;
4965                 out->numbrushes = c;
4966         }
4967 }
4968
4969 static void Mod_Q3BSP_LoadLeafBrushes(lump_t *l)
4970 {
4971         int *in;
4972         int *out;
4973         int i, n, count;
4974
4975         in = (int *)(mod_base + l->fileofs);
4976         if (l->filelen % sizeof(*in))
4977                 Host_Error("Mod_Q3BSP_LoadLeafBrushes: funny lump size in %s",loadmodel->name);
4978         count = l->filelen / sizeof(*in);
4979         out = (int *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
4980
4981         loadmodel->brush.data_leafbrushes = out;
4982         loadmodel->brush.num_leafbrushes = count;
4983
4984         for (i = 0;i < count;i++, in++, out++)
4985         {
4986                 n = LittleLong(*in);
4987                 if (n < 0 || n >= loadmodel->brush.num_brushes)
4988                         Host_Error("Mod_Q3BSP_LoadLeafBrushes: invalid brush index %i (%i brushes)", n, loadmodel->brush.num_brushes);
4989                 *out = n;
4990         }
4991 }
4992
4993 static void Mod_Q3BSP_LoadLeafFaces(lump_t *l)
4994 {
4995         int *in;
4996         int *out;
4997         int i, n, count;
4998
4999         in = (int *)(mod_base + l->fileofs);
5000         if (l->filelen % sizeof(*in))
5001                 Host_Error("Mod_Q3BSP_LoadLeafFaces: funny lump size in %s",loadmodel->name);
5002         count = l->filelen / sizeof(*in);
5003         out = (int *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
5004
5005         loadmodel->brush.data_leafsurfaces = out;
5006         loadmodel->brush.num_leafsurfaces = count;
5007
5008         for (i = 0;i < count;i++, in++, out++)
5009         {
5010                 n = LittleLong(*in);
5011                 if (n < 0 || n >= loadmodel->num_surfaces)
5012                         Host_Error("Mod_Q3BSP_LoadLeafFaces: invalid face index %i (%i faces)", n, loadmodel->num_surfaces);
5013                 *out = n;
5014         }
5015 }
5016
5017 static void Mod_Q3BSP_LoadLeafs(lump_t *l)
5018 {
5019         q3dleaf_t *in;
5020         mleaf_t *out;
5021         int i, j, n, c, count;
5022
5023         in = (q3dleaf_t *)(mod_base + l->fileofs);
5024         if (l->filelen % sizeof(*in))
5025                 Host_Error("Mod_Q3BSP_LoadLeafs: funny lump size in %s",loadmodel->name);
5026         count = l->filelen / sizeof(*in);
5027         out = (mleaf_t *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
5028
5029         loadmodel->brush.data_leafs = out;
5030         loadmodel->brush.num_leafs = count;
5031
5032         for (i = 0;i < count;i++, in++, out++)
5033         {
5034                 out->parent = NULL;
5035                 out->plane = NULL;
5036                 out->clusterindex = LittleLong(in->clusterindex);
5037                 out->areaindex = LittleLong(in->areaindex);
5038                 for (j = 0;j < 3;j++)
5039                 {
5040                         // yes the mins/maxs are ints
5041                         out->mins[j] = LittleLong(in->mins[j]) - 1;
5042                         out->maxs[j] = LittleLong(in->maxs[j]) + 1;
5043                 }
5044                 n = LittleLong(in->firstleafface);
5045                 c = LittleLong(in->numleaffaces);
5046                 if (n < 0 || n + c > loadmodel->brush.num_leafsurfaces)
5047                         Host_Error("Mod_Q3BSP_LoadLeafs: invalid leafsurface range %i : %i (%i leafsurfaces)", n, n + c, loadmodel->brush.num_leafsurfaces);
5048                 out->firstleafsurface = loadmodel->brush.data_leafsurfaces + n;
5049                 out->numleafsurfaces = c;
5050                 n = LittleLong(in->firstleafbrush);
5051                 c = LittleLong(in->numleafbrushes);
5052                 if (n < 0 || n + c > loadmodel->brush.num_leafbrushes)
5053                         Host_Error("Mod_Q3BSP_LoadLeafs: invalid leafbrush range %i : %i (%i leafbrushes)", n, n + c, loadmodel->brush.num_leafbrushes);
5054                 out->firstleafbrush = loadmodel->brush.data_leafbrushes + n;
5055                 out->numleafbrushes = c;
5056         }
5057 }
5058
5059 static void Mod_Q3BSP_LoadNodes(lump_t *l)
5060 {
5061         q3dnode_t *in;
5062         mnode_t *out;
5063         int i, j, n, count;
5064
5065         in = (q3dnode_t *)(mod_base + l->fileofs);
5066         if (l->filelen % sizeof(*in))
5067                 Host_Error("Mod_Q3BSP_LoadNodes: funny lump size in %s",loadmodel->name);
5068         count = l->filelen / sizeof(*in);
5069         out = (mnode_t *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
5070
5071         loadmodel->brush.data_nodes = out;
5072         loadmodel->brush.num_nodes = count;
5073
5074         for (i = 0;i < count;i++, in++, out++)
5075         {
5076                 out->parent = NULL;
5077                 n = LittleLong(in->planeindex);
5078                 if (n < 0 || n >= loadmodel->brush.num_planes)
5079                         Host_Error("Mod_Q3BSP_LoadNodes: invalid planeindex %i (%i planes)", n, loadmodel->brush.num_planes);
5080                 out->plane = loadmodel->brush.data_planes + n;
5081                 for (j = 0;j < 2;j++)
5082                 {
5083                         n = LittleLong(in->childrenindex[j]);
5084                         if (n >= 0)
5085                         {
5086                                 if (n >= loadmodel->brush.num_nodes)
5087                                         Host_Error("Mod_Q3BSP_LoadNodes: invalid child node index %i (%i nodes)", n, loadmodel->brush.num_nodes);
5088                                 out->children[j] = loadmodel->brush.data_nodes + n;
5089                         }
5090                         else
5091                         {
5092                                 n = -1 - n;
5093                                 if (n >= loadmodel->brush.num_leafs)
5094                                         Host_Error("Mod_Q3BSP_LoadNodes: invalid child leaf index %i (%i leafs)", n, loadmodel->brush.num_leafs);
5095                                 out->children[j] = (mnode_t *)(loadmodel->brush.data_leafs + n);
5096                         }
5097                 }
5098                 for (j = 0;j < 3;j++)
5099                 {
5100                         // yes the mins/maxs are ints
5101                         out->mins[j] = LittleLong(in->mins[j]) - 1;
5102                         out->maxs[j] = LittleLong(in->maxs[j]) + 1;
5103                 }
5104         }
5105
5106         // set the parent pointers
5107         Mod_Q1BSP_LoadNodes_RecursiveSetParent(loadmodel->brush.data_nodes, NULL);
5108 }
5109
5110 static void Mod_Q3BSP_LoadLightGrid(lump_t *l)
5111 {
5112         q3dlightgrid_t *in;
5113         q3dlightgrid_t *out;
5114         int count;
5115
5116         in = (q3dlightgrid_t *)(mod_base + l->fileofs);
5117         if (l->filelen % sizeof(*in))
5118                 Host_Error("Mod_Q3BSP_LoadLightGrid: funny lump size in %s",loadmodel->name);
5119         loadmodel->brushq3.num_lightgrid_scale[0] = 1.0f / loadmodel->brushq3.num_lightgrid_cellsize[0];
5120         loadmodel->brushq3.num_lightgrid_scale[1] = 1.0f / loadmodel->brushq3.num_lightgrid_cellsize[1];
5121         loadmodel->brushq3.num_lightgrid_scale[2] = 1.0f / loadmodel->brushq3.num_lightgrid_cellsize[2];
5122         loadmodel->brushq3.num_lightgrid_imins[0] = (int)ceil(loadmodel->brushq3.data_models->mins[0] * loadmodel->brushq3.num_lightgrid_scale[0]);
5123         loadmodel->brushq3.num_lightgrid_imins[1] = (int)ceil(loadmodel->brushq3.data_models->mins[1] * loadmodel->brushq3.num_lightgrid_scale[1]);
5124         loadmodel->brushq3.num_lightgrid_imins[2] = (int)ceil(loadmodel->brushq3.data_models->mins[2] * loadmodel->brushq3.num_lightgrid_scale[2]);
5125         loadmodel->brushq3.num_lightgrid_imaxs[0] = (int)floor(loadmodel->brushq3.data_models->maxs[0] * loadmodel->brushq3.num_lightgrid_scale[0]);
5126         loadmodel->brushq3.num_lightgrid_imaxs[1] = (int)floor(loadmodel->brushq3.data_models->maxs[1] * loadmodel->brushq3.num_lightgrid_scale[1]);
5127         loadmodel->brushq3.num_lightgrid_imaxs[2] = (int)floor(loadmodel->brushq3.data_models->maxs[2] * loadmodel->brushq3.num_lightgrid_scale[2]);
5128         loadmodel->brushq3.num_lightgrid_isize[0] = loadmodel->brushq3.num_lightgrid_imaxs[0] - loadmodel->brushq3.num_lightgrid_imins[0] + 1;
5129         loadmodel->brushq3.num_lightgrid_isize[1] = loadmodel->brushq3.num_lightgrid_imaxs[1] - loadmodel->brushq3.num_lightgrid_imins[1] + 1;
5130         loadmodel->brushq3.num_lightgrid_isize[2] = loadmodel->brushq3.num_lightgrid_imaxs[2] - loadmodel->brushq3.num_lightgrid_imins[2] + 1;
5131         count = loadmodel->brushq3.num_lightgrid_isize[0] * loadmodel->brushq3.num_lightgrid_isize[1] * loadmodel->brushq3.num_lightgrid_isize[2];
5132         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]);
5133         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]);
5134
5135         // if lump is empty there is nothing to load, we can deal with that in the LightPoint code
5136         if (l->filelen)
5137         {
5138                 if (l->filelen < count * (int)sizeof(*in))
5139                         Host_Error("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_dimensions[0], loadmodel->brushq3.num_lightgrid_dimensions[1], loadmodel->brushq3.num_lightgrid_dimensions[2]);
5140                 if (l->filelen != count * (int)sizeof(*in))
5141                         Con_Printf("Mod_Q3BSP_LoadLightGrid: Warning: calculated lightgrid size %i bytes does not match lump size %i\n", (int)(count * sizeof(*in)), l->filelen);
5142                 out = (q3dlightgrid_t *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
5143                 loadmodel->brushq3.data_lightgrid = out;
5144                 loadmodel->brushq3.num_lightgrid = count;
5145                 // no swapping or validation necessary
5146                 memcpy(out, in, count * (int)sizeof(*out));
5147         }
5148 }
5149
5150 static void Mod_Q3BSP_LoadPVS(lump_t *l)
5151 {
5152         q3dpvs_t *in;
5153         int totalchains;
5154
5155         if (l->filelen == 0)
5156         {
5157                 int i;
5158                 // unvised maps often have cluster indices even without pvs, so check
5159                 // leafs to find real number of clusters
5160                 loadmodel->brush.num_pvsclusters = 1;
5161                 for (i = 0;i < loadmodel->brush.num_leafs;i++)
5162                         loadmodel->brush.num_pvsclusters = max(loadmodel->brush.num_pvsclusters, loadmodel->brush.data_leafs[i].clusterindex + 1);
5163
5164                 // create clusters
5165                 loadmodel->brush.num_pvsclusterbytes = (loadmodel->brush.num_pvsclusters + 7) / 8;
5166                 totalchains = loadmodel->brush.num_pvsclusterbytes * loadmodel->brush.num_pvsclusters;
5167                 loadmodel->brush.data_pvsclusters = (unsigned char *)Mem_Alloc(loadmodel->mempool, totalchains);
5168                 memset(loadmodel->brush.data_pvsclusters, 0xFF, totalchains);
5169                 return;
5170         }
5171
5172         in = (q3dpvs_t *)(mod_base + l->fileofs);
5173         if (l->filelen < 9)
5174                 Host_Error("Mod_Q3BSP_LoadPVS: funny lump size in %s",loadmodel->name);
5175
5176         loadmodel->brush.num_pvsclusters = LittleLong(in->numclusters);
5177         loadmodel->brush.num_pvsclusterbytes = LittleLong(in->chainlength);
5178         if (loadmodel->brush.num_pvsclusterbytes < ((loadmodel->brush.num_pvsclusters + 7) / 8))
5179                 Host_Error("Mod_Q3BSP_LoadPVS: (chainlength = %i) < ((numclusters = %i) + 7) / 8", loadmodel->brush.num_pvsclusterbytes, loadmodel->brush.num_pvsclusters);
5180         totalchains = loadmodel->brush.num_pvsclusterbytes * loadmodel->brush.num_pvsclusters;
5181         if (l->filelen < totalchains + (int)sizeof(*in))
5182                 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);
5183
5184         loadmodel->brush.data_pvsclusters = (unsigned char *)Mem_Alloc(loadmodel->mempool, totalchains);
5185         memcpy(loadmodel->brush.data_pvsclusters, (unsigned char *)(in + 1), totalchains);
5186 }
5187
5188 static void Mod_Q3BSP_LightPoint(dp_model_t *model, const vec3_t p, vec3_t ambientcolor, vec3_t diffusecolor, vec3_t diffusenormal)
5189 {
5190         int i, j, k, index[3];
5191         float transformed[3], blend1, blend2, blend, stylescale;
5192         q3dlightgrid_t *a, *s;
5193
5194         // scale lighting by lightstyle[0] so that darkmode in dpmod works properly
5195         stylescale = r_refdef.scene.rtlightstylevalue[0];
5196
5197         if (!model->brushq3.num_lightgrid)
5198         {
5199                 ambientcolor[0] = stylescale;
5200                 ambientcolor[1] = stylescale;
5201                 ambientcolor[2] = stylescale;
5202                 return;
5203         }
5204
5205         Matrix4x4_Transform(&model->brushq3.num_lightgrid_indexfromworld, p, transformed);
5206         //Matrix4x4_Print(&model->brushq3.num_lightgrid_indexfromworld);
5207         //Con_Printf("%f %f %f transformed %f %f %f clamped ", p[0], p[1], p[2], transformed[0], transformed[1], transformed[2]);
5208         transformed[0] = bound(0, transformed[0], model->brushq3.num_lightgrid_isize[0] - 1);
5209         transformed[1] = bound(0, transformed[1], model->brushq3.num_lightgrid_isize[1] - 1);
5210         transformed[2] = bound(0, transformed[2], model->brushq3.num_lightgrid_isize[2] - 1);
5211         index[0] = (int)floor(transformed[0]);
5212         index[1] = (int)floor(transformed[1]);
5213         index[2] = (int)floor(transformed[2]);
5214         //Con_Printf("%f %f %f index %i %i %i:\n", transformed[0], transformed[1], transformed[2], index[0], index[1], index[2]);
5215
5216         // now lerp the values
5217         VectorClear(diffusenormal);
5218         a = &model->brushq3.data_lightgrid[(index[2] * model->brushq3.num_lightgrid_isize[1] + index[1]) * model->brushq3.num_lightgrid_isize[0] + index[0]];
5219         for (k = 0;k < 2;k++)
5220         {
5221                 blend1 = (k ? (transformed[2] - index[2]) : (1 - (transformed[2] - index[2])));
5222                 if (blend1 < 0.001f || index[2] + k >= model->brushq3.num_lightgrid_isize[2])
5223                         continue;
5224                 for (j = 0;j < 2;j++)
5225                 {
5226                         blend2 = blend1 * (j ? (transformed[1] - index[1]) : (1 - (transformed[1] - index[1])));
5227                         if (blend2 < 0.001f || index[1] + j >= model->brushq3.num_lightgrid_isize[1])
5228                                 continue;
5229                         for (i = 0;i < 2;i++)
5230                         {
5231                                 blend = blend2 * (i ? (transformed[0] - index[0]) : (1 - (transformed[0] - index[0]))) * stylescale;
5232                                 if (blend < 0.001f || index[0] + i >= model->brushq3.num_lightgrid_isize[0])
5233                                         continue;
5234                                 s = a + (k * model->brushq3.num_lightgrid_isize[1] + j) * model->brushq3.num_lightgrid_isize[0] + i;
5235                                 VectorMA(ambientcolor, blend * (1.0f / 128.0f), s->ambientrgb, ambientcolor);
5236                                 VectorMA(diffusecolor, blend * (1.0f / 128.0f), s->diffusergb, diffusecolor);
5237                                 // this uses the mod_md3_sin table because the values are
5238                                 // already in the 0-255 range, the 64+ bias fetches a cosine
5239                                 // instead of a sine value
5240                                 diffusenormal[0] += blend * (mod_md3_sin[64 + s->diffuseyaw] * mod_md3_sin[s->diffusepitch]);
5241                                 diffusenormal[1] += blend * (mod_md3_sin[     s->diffuseyaw] * mod_md3_sin[s->diffusepitch]);
5242                                 diffusenormal[2] += blend * (mod_md3_sin[64 + s->diffusepitch]);
5243                                 //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)));
5244                         }
5245                 }
5246         }
5247
5248         // normalize the light direction before turning
5249         VectorNormalize(diffusenormal);
5250         //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]);
5251 }
5252
5253 static void Mod_Q3BSP_TracePoint_RecursiveBSPNode(trace_t *trace, dp_model_t *model, mnode_t *node, const vec3_t point, int markframe)
5254 {
5255         int i;
5256         mleaf_t *leaf;
5257         colbrushf_t *brush;
5258         // find which leaf the point is in
5259         while (node->plane)
5260                 node = node->children[(node->plane->type < 3 ? point[node->plane->type] : DotProduct(point, node->plane->normal)) < node->plane->dist];
5261         // point trace the brushes
5262         leaf = (mleaf_t *)node;
5263         for (i = 0;i < leaf->numleafbrushes;i++)
5264         {
5265                 brush = model->brush.data_brushes[leaf->firstleafbrush[i]].colbrushf;
5266                 if (brush && brush->markframe != markframe && BoxesOverlap(point, point, brush->mins, brush->maxs))
5267                 {
5268                         brush->markframe = markframe;
5269                         Collision_TracePointBrushFloat(trace, point, brush);
5270                 }
5271         }
5272         // can't do point traces on curves (they have no thickness)
5273 }
5274
5275 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)
5276 {
5277         int i, startside, endside;
5278         float dist1, dist2, midfrac, mid[3], nodesegmentmins[3], nodesegmentmaxs[3];
5279         mleaf_t *leaf;
5280         msurface_t *surface;
5281         mplane_t *plane;
5282         colbrushf_t *brush;
5283         // walk the tree until we hit a leaf, recursing for any split cases
5284         while (node->plane)
5285         {
5286                 // abort if this part of the bsp tree can not be hit by this trace
5287 //              if (!(node->combinedsupercontents & trace->hitsupercontentsmask))
5288 //                      return;
5289                 plane = node->plane;
5290                 // axial planes are much more common than non-axial, so an optimized
5291                 // axial case pays off here
5292                 if (plane->type < 3)
5293                 {
5294                         dist1 = start[plane->type] - plane->dist;
5295                         dist2 = end[plane->type] - plane->dist;
5296                 }
5297                 else
5298                 {
5299                         dist1 = DotProduct(start, plane->normal) - plane->dist;
5300                         dist2 = DotProduct(end, plane->normal) - plane->dist;
5301                 }
5302                 startside = dist1 < 0;
5303                 endside = dist2 < 0;
5304                 if (startside == endside)
5305                 {
5306                         // most of the time the line fragment is on one side of the plane
5307                         node = node->children[startside];
5308                 }
5309                 else
5310                 {
5311                         // line crosses node plane, split the line
5312                         dist1 = PlaneDiff(linestart, plane);
5313                         dist2 = PlaneDiff(lineend, plane);
5314                         midfrac = dist1 / (dist1 - dist2);
5315                         VectorLerp(linestart, midfrac, lineend, mid);
5316                         // take the near side first
5317                         Mod_Q3BSP_TraceLine_RecursiveBSPNode(trace, model, node->children[startside], start, mid, startfrac, midfrac, linestart, lineend, markframe, segmentmins, segmentmaxs);
5318                         // if we found an impact on the front side, don't waste time
5319                         // exploring the far side
5320                         if (midfrac <= trace->realfraction)
5321                                 Mod_Q3BSP_TraceLine_RecursiveBSPNode(trace, model, node->children[endside], mid, end, midfrac, endfrac, linestart, lineend, markframe, segmentmins, segmentmaxs);
5322                         return;
5323                 }
5324         }
5325         // abort if this part of the bsp tree can not be hit by this trace
5326 //      if (!(node->combinedsupercontents & trace->hitsupercontentsmask))
5327 //              return;
5328         // hit a leaf
5329         nodesegmentmins[0] = min(start[0], end[0]) - 1;
5330         nodesegmentmins[1] = min(start[1], end[1]) - 1;
5331         nodesegmentmins[2] = min(start[2], end[2]) - 1;
5332         nodesegmentmaxs[0] = max(start[0], end[0]) + 1;
5333         nodesegmentmaxs[1] = max(start[1], end[1]) + 1;
5334         nodesegmentmaxs[2] = max(start[2], end[2]) + 1;
5335         // line trace the brushes
5336         leaf = (mleaf_t *)node;
5337         for (i = 0;i < leaf->numleafbrushes;i++)
5338         {
5339                 brush = model->brush.data_brushes[leaf->firstleafbrush[i]].colbrushf;
5340                 if (brush && brush->markframe != markframe && BoxesOverlap(nodesegmentmins, nodesegmentmaxs, brush->mins, brush->maxs))
5341                 {
5342                         brush->markframe = markframe;
5343                         Collision_TraceLineBrushFloat(trace, linestart, lineend, brush, brush);
5344                 }
5345         }
5346         // can't do point traces on curves (they have no thickness)
5347         if (leaf->containscollisionsurfaces && mod_q3bsp_curves_collisions.integer && !VectorCompare(start, end))
5348         {
5349                 // line trace the curves
5350                 for (i = 0;i < leaf->numleafsurfaces;i++)
5351                 {
5352                         surface = model->data_surfaces + leaf->firstleafsurface[i];
5353                         if (surface->num_collisiontriangles && surface->collisionmarkframe != markframe && BoxesOverlap(nodesegmentmins, nodesegmentmaxs, surface->mins, surface->maxs))
5354                         {
5355                                 surface->collisionmarkframe = markframe;
5356                                 Collision_TraceLineTriangleMeshFloat(trace, linestart, lineend, surface->num_collisiontriangles, surface->data_collisionelement3i, surface->data_collisionvertex3f, surface->texture->supercontents, surface->texture->surfaceflags, surface->texture, segmentmins, segmentmaxs);
5357                         }
5358                 }
5359         }
5360 }
5361
5362 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)
5363 {
5364         int i;
5365         int sides;
5366         mleaf_t *leaf;
5367         colbrushf_t *brush;
5368         msurface_t *surface;
5369         mplane_t *plane;
5370         float nodesegmentmins[3], nodesegmentmaxs[3];
5371         // walk the tree until we hit a leaf, recursing for any split cases
5372         while (node->plane)
5373         {
5374                 // abort if this part of the bsp tree can not be hit by this trace
5375 //              if (!(node->combinedsupercontents & trace->hitsupercontentsmask))
5376 //                      return;
5377                 plane = node->plane;
5378                 // axial planes are much more common than non-axial, so an optimized
5379                 // axial case pays off here
5380                 if (plane->type < 3)
5381                 {
5382                         // this is an axial plane, compare bounding box directly to it and
5383                         // recurse sides accordingly
5384                         // recurse down node sides
5385                         // use an inlined axial BoxOnPlaneSide to slightly reduce overhead
5386                         //sides = BoxOnPlaneSide(nodesegmentmins, nodesegmentmaxs, plane);
5387                         //sides = ((segmentmaxs[plane->type] >= plane->dist) | ((segmentmins[plane->type] < plane->dist) << 1));
5388                         sides = ((segmentmaxs[plane->type] >= plane->dist) + ((segmentmins[plane->type] < plane->dist) * 2));
5389                 }
5390                 else
5391                 {
5392                         // this is a non-axial plane, so check if the start and end boxes
5393                         // are both on one side of the plane to handle 'diagonal' cases
5394                         sides = BoxOnPlaneSide(thisbrush_start->mins, thisbrush_start->maxs, plane) | BoxOnPlaneSide(thisbrush_end->mins, thisbrush_end->maxs, plane);
5395                 }
5396                 if (sides == 3)
5397                 {
5398                         // segment crosses plane
5399                         Mod_Q3BSP_TraceBrush_RecursiveBSPNode(trace, model, node->children[0], thisbrush_start, thisbrush_end, markframe, segmentmins, segmentmaxs);
5400                         sides = 2;
5401                 }
5402                 // if sides == 0 then the trace itself is bogus (Not A Number values),
5403                 // in this case we simply pretend the trace hit nothing
5404                 if (sides == 0)
5405                         return; // ERROR: NAN bounding box!
5406                 // take whichever side the segment box is on
5407                 node = node->children[sides - 1];
5408         }
5409         // abort if this part of the bsp tree can not be hit by this trace
5410 //      if (!(node->combinedsupercontents & trace->hitsupercontentsmask))
5411 //              return;
5412         nodesegmentmins[0] = max(segmentmins[0], node->mins[0] - 1);
5413         nodesegmentmins[1] = max(segmentmins[1], node->mins[1] - 1);
5414         nodesegmentmins[2] = max(segmentmins[2], node->mins[2] - 1);
5415         nodesegmentmaxs[0] = min(segmentmaxs[0], node->maxs[0] + 1);
5416         nodesegmentmaxs[1] = min(segmentmaxs[1], node->maxs[1] + 1);
5417         nodesegmentmaxs[2] = min(segmentmaxs[2], node->maxs[2] + 1);
5418         // hit a leaf
5419         leaf = (mleaf_t *)node;
5420         for (i = 0;i < leaf->numleafbrushes;i++)
5421         {
5422                 brush = model->brush.data_brushes[leaf->firstleafbrush[i]].colbrushf;
5423                 if (brush && brush->markframe != markframe && BoxesOverlap(nodesegmentmins, nodesegmentmaxs, brush->mins, brush->maxs))
5424                 {
5425                         brush->markframe = markframe;
5426                         Collision_TraceBrushBrushFloat(trace, thisbrush_start, thisbrush_end, brush, brush);
5427                 }
5428         }
5429         if (leaf->containscollisionsurfaces && mod_q3bsp_curves_collisions.integer)
5430         {
5431                 for (i = 0;i < leaf->numleafsurfaces;i++)
5432                 {
5433                         surface = model->data_surfaces + leaf->firstleafsurface[i];
5434                         if (surface->num_collisiontriangles && surface->collisionmarkframe != markframe && BoxesOverlap(nodesegmentmins, nodesegmentmaxs, surface->mins, surface->maxs))
5435                         {
5436                                 surface->collisionmarkframe = markframe;
5437                                 Collision_TraceBrushTriangleMeshFloat(trace, thisbrush_start, thisbrush_end, surface->num_collisiontriangles, surface->data_collisionelement3i, surface->data_collisionvertex3f, surface->texture->supercontents, surface->texture->surfaceflags, surface->texture, segmentmins, segmentmaxs);
5438                         }
5439                 }
5440         }
5441 }
5442
5443 static void Mod_Q3BSP_TraceBox(dp_model_t *model, int frame, trace_t *trace, const vec3_t start, const vec3_t boxmins, const vec3_t boxmaxs, const vec3_t end, int hitsupercontentsmask)
5444 {
5445         int i;
5446         float segmentmins[3], segmentmaxs[3];
5447         static int markframe = 0;
5448         msurface_t *surface;
5449         q3mbrush_t *brush;
5450         memset(trace, 0, sizeof(*trace));
5451         trace->fraction = 1;
5452         trace->realfraction = 1;
5453         trace->hitsupercontentsmask = hitsupercontentsmask;
5454         if (mod_q3bsp_optimizedtraceline.integer && VectorLength2(boxmins) + VectorLength2(boxmaxs) == 0)
5455         {
5456                 if (VectorCompare(start, end))
5457                 {
5458                         // point trace
5459                         if (model->brush.submodel)
5460                         {
5461                                 for (i = 0, brush = model->brush.data_brushes + model->firstmodelbrush;i < model->nummodelbrushes;i++, brush++)
5462                                         if (brush->colbrushf)
5463                                                 Collision_TracePointBrushFloat(trace, start, brush->colbrushf);
5464                         }
5465                         else
5466                                 Mod_Q3BSP_TracePoint_RecursiveBSPNode(trace, model, model->brush.data_nodes, start, ++markframe);
5467                 }
5468                 else
5469                 {
5470                         // line trace
5471                         segmentmins[0] = min(start[0], end[0]) - 1;
5472                         segmentmins[1] = min(start[1], end[1]) - 1;
5473                         segmentmins[2] = min(start[2], end[2]) - 1;
5474                         segmentmaxs[0] = max(start[0], end[0]) + 1;
5475                         segmentmaxs[1] = max(start[1], end[1]) + 1;
5476                         segmentmaxs[2] = max(start[2], end[2]) + 1;
5477                         if (model->brush.submodel)
5478                         {
5479                                 for (i = 0, brush = model->brush.data_brushes + model->firstmodelbrush;i < model->nummodelbrushes;i++, brush++)
5480                                         if (brush->colbrushf)
5481                                                 Collision_TraceLineBrushFloat(trace, start, end, brush->colbrushf, brush->colbrushf);
5482                                 if (mod_q3bsp_curves_collisions.integer)
5483                                         for (i = 0, surface = model->data_surfaces + model->firstmodelsurface;i < model->nummodelsurfaces;i++, surface++)
5484                                                 if (surface->num_collisiontriangles)
5485                                                         Collision_TraceLineTriangleMeshFloat(trace, start, end, surface->num_collisiontriangles, surface->data_collisionelement3i, surface->data_collisionvertex3f, surface->texture->supercontents, surface->texture->surfaceflags, surface->texture, segmentmins, segmentmaxs);
5486                         }
5487                         else
5488                                 Mod_Q3BSP_TraceLine_RecursiveBSPNode(trace, model, model->brush.data_nodes, start, end, 0, 1, start, end, ++markframe, segmentmins, segmentmaxs);
5489                 }
5490         }
5491         else
5492         {
5493                 // box trace, performed as brush trace
5494                 colbrushf_t *thisbrush_start, *thisbrush_end;
5495                 vec3_t boxstartmins, boxstartmaxs, boxendmins, boxendmaxs;
5496                 segmentmins[0] = min(start[0], end[0]) + boxmins[0] - 1;
5497                 segmentmins[1] = min(start[1], end[1]) + boxmins[1] - 1;
5498                 segmentmins[2] = min(start[2], end[2]) + boxmins[2] - 1;
5499                 segmentmaxs[0] = max(start[0], end[0]) + boxmaxs[0] + 1;
5500                 segmentmaxs[1] = max(start[1], end[1]) + boxmaxs[1] + 1;
5501                 segmentmaxs[2] = max(start[2], end[2]) + boxmaxs[2] + 1;
5502                 VectorAdd(start, boxmins, boxstartmins);
5503                 VectorAdd(start, boxmaxs, boxstartmaxs);
5504                 VectorAdd(end, boxmins, boxendmins);
5505                 VectorAdd(end, boxmaxs, boxendmaxs);
5506                 thisbrush_start = Collision_BrushForBox(&identitymatrix, boxstartmins, boxstartmaxs, 0, 0, NULL);
5507                 thisbrush_end = Collision_BrushForBox(&identitymatrix, boxendmins, boxendmaxs, 0, 0, NULL);
5508                 if (model->brush.submodel)
5509                 {
5510                         for (i = 0, brush = model->brush.data_brushes + model->firstmodelbrush;i < model->nummodelbrushes;i++, brush++)
5511                                 if (brush->colbrushf)
5512                                         Collision_TraceBrushBrushFloat(trace, thisbrush_start, thisbrush_end, brush->colbrushf, brush->colbrushf);
5513                         if (mod_q3bsp_curves_collisions.integer)
5514                                 for (i = 0, surface = model->data_surfaces + model->firstmodelsurface;i < model->nummodelsurfaces;i++, surface++)
5515                                         if (surface->num_collisiontriangles)
5516                                                 Collision_TraceBrushTriangleMeshFloat(trace, thisbrush_start, thisbrush_end, surface->num_collisiontriangles, surface->data_collisionelement3i, surface->data_collisionvertex3f, surface->texture->supercontents, surface->texture->surfaceflags, surface->texture, segmentmins, segmentmaxs);
5517                 }
5518                 else
5519                         Mod_Q3BSP_TraceBrush_RecursiveBSPNode(trace, model, model->brush.data_nodes, thisbrush_start, thisbrush_end, ++markframe, segmentmins, segmentmaxs);
5520         }
5521 }
5522
5523 static int Mod_Q3BSP_PointSuperContents(struct model_s *model, int frame, const vec3_t point)
5524 {
5525         int i;
5526         int supercontents = 0;
5527         q3mbrush_t *brush;
5528         // test if the point is inside each brush
5529         if (model->brush.submodel)
5530         {
5531                 // submodels are effectively one leaf
5532                 for (i = 0, brush = model->brush.data_brushes + model->firstmodelbrush;i < model->nummodelbrushes;i++, brush++)
5533                         if (brush->colbrushf && Collision_PointInsideBrushFloat(point, brush->colbrushf))
5534                                 supercontents |= brush->colbrushf->supercontents;
5535         }
5536         else
5537         {
5538                 mnode_t *node = model->brush.data_nodes;
5539                 mleaf_t *leaf;
5540                 // find which leaf the point is in
5541                 while (node->plane)
5542                         node = node->children[(node->plane->type < 3 ? point[node->plane->type] : DotProduct(point, node->plane->normal)) < node->plane->dist];
5543                 leaf = (mleaf_t *)node;
5544                 // now check the brushes in the leaf
5545                 for (i = 0;i < leaf->numleafbrushes;i++)
5546                 {
5547                         brush = model->brush.data_brushes + leaf->firstleafbrush[i];
5548                         if (brush->colbrushf && Collision_PointInsideBrushFloat(point, brush->colbrushf))
5549                                 supercontents |= brush->colbrushf->supercontents;
5550                 }
5551         }
5552         return supercontents;
5553 }
5554
5555 static int Mod_Q3BSP_SuperContentsFromNativeContents(dp_model_t *model, int nativecontents)
5556 {
5557         int supercontents = 0;
5558         if (nativecontents & CONTENTSQ3_SOLID)
5559                 supercontents |= SUPERCONTENTS_SOLID;
5560         if (nativecontents & CONTENTSQ3_WATER)
5561                 supercontents |= SUPERCONTENTS_WATER;
5562         if (nativecontents & CONTENTSQ3_SLIME)
5563                 supercontents |= SUPERCONTENTS_SLIME;
5564         if (nativecontents & CONTENTSQ3_LAVA)
5565                 supercontents |= SUPERCONTENTS_LAVA;
5566         if (nativecontents & CONTENTSQ3_BODY)
5567                 supercontents |= SUPERCONTENTS_BODY;
5568         if (nativecontents & CONTENTSQ3_CORPSE)
5569                 supercontents |= SUPERCONTENTS_CORPSE;
5570         if (nativecontents & CONTENTSQ3_NODROP)
5571                 supercontents |= SUPERCONTENTS_NODROP;
5572         if (nativecontents & CONTENTSQ3_PLAYERCLIP)
5573                 supercontents |= SUPERCONTENTS_PLAYERCLIP;
5574         if (nativecontents & CONTENTSQ3_MONSTERCLIP)
5575                 supercontents |= SUPERCONTENTS_MONSTERCLIP;
5576         if (nativecontents & CONTENTSQ3_DONOTENTER)
5577                 supercontents |= SUPERCONTENTS_DONOTENTER;
5578         return supercontents;
5579 }
5580
5581 static int Mod_Q3BSP_NativeContentsFromSuperContents(dp_model_t *model, int supercontents)
5582 {
5583         int nativecontents = 0;
5584         if (supercontents & SUPERCONTENTS_SOLID)
5585                 nativecontents |= CONTENTSQ3_SOLID;
5586         if (supercontents & SUPERCONTENTS_WATER)
5587                 nativecontents |= CONTENTSQ3_WATER;
5588         if (supercontents & SUPERCONTENTS_SLIME)
5589                 nativecontents |= CONTENTSQ3_SLIME;
5590         if (supercontents & SUPERCONTENTS_LAVA)
5591                 nativecontents |= CONTENTSQ3_LAVA;
5592         if (supercontents & SUPERCONTENTS_BODY)
5593                 nativecontents |= CONTENTSQ3_BODY;
5594         if (supercontents & SUPERCONTENTS_CORPSE)
5595                 nativecontents |= CONTENTSQ3_CORPSE;
5596         if (supercontents & SUPERCONTENTS_NODROP)
5597                 nativecontents |= CONTENTSQ3_NODROP;
5598         if (supercontents & SUPERCONTENTS_PLAYERCLIP)
5599                 nativecontents |= CONTENTSQ3_PLAYERCLIP;
5600         if (supercontents & SUPERCONTENTS_MONSTERCLIP)
5601                 nativecontents |= CONTENTSQ3_MONSTERCLIP;
5602         if (supercontents & SUPERCONTENTS_DONOTENTER)
5603                 nativecontents |= CONTENTSQ3_DONOTENTER;
5604         return nativecontents;
5605 }
5606
5607 void Mod_Q3BSP_RecursiveFindNumLeafs(mnode_t *node)
5608 {
5609         int numleafs;
5610         while (node->plane)
5611         {
5612                 Mod_Q3BSP_RecursiveFindNumLeafs(node->children[0]);
5613                 node = node->children[1];
5614         }
5615         numleafs = ((mleaf_t *)node - loadmodel->brush.data_leafs) + 1;
5616         if (loadmodel->brush.num_leafs < numleafs)
5617                 loadmodel->brush.num_leafs = numleafs;
5618 }
5619
5620 void Mod_Q3BSP_Load(dp_model_t *mod, void *buffer, void *bufferend)
5621 {
5622         int i, j, numshadowmeshtriangles;
5623         q3dheader_t *header;
5624         float corner[3], yawradius, modelradius;
5625         msurface_t *surface;
5626
5627         mod->modeldatatypestring = "Q3BSP";
5628
5629         mod->type = mod_brushq3;
5630         mod->numframes = 2; // although alternate textures are not supported it is annoying to complain about no such frame 1
5631         mod->numskins = 1;
5632
5633         header = (q3dheader_t *)buffer;
5634
5635         i = LittleLong(header->version);
5636         if (i != Q3BSPVERSION)
5637                 Host_Error("Mod_Q3BSP_Load: %s has wrong version number (%i, should be %i)", mod->name, i, Q3BSPVERSION);
5638         mod->brush.ishlbsp = false;
5639         if (loadmodel->isworldmodel)
5640                 Cvar_SetValue("halflifebsp", mod->brush.ishlbsp);
5641
5642         mod->soundfromcenter = true;
5643         mod->TraceBox = Mod_Q3BSP_TraceBox;
5644         mod->PointSuperContents = Mod_Q3BSP_PointSuperContents;
5645         mod->brush.TraceLineOfSight = Mod_Q1BSP_TraceLineOfSight;
5646         mod->brush.SuperContentsFromNativeContents = Mod_Q3BSP_SuperContentsFromNativeContents;
5647         mod->brush.NativeContentsFromSuperContents = Mod_Q3BSP_NativeContentsFromSuperContents;
5648         mod->brush.GetPVS = Mod_Q1BSP_GetPVS;
5649         mod->brush.FatPVS = Mod_Q1BSP_FatPVS;
5650         mod->brush.BoxTouchingPVS = Mod_Q1BSP_BoxTouchingPVS;
5651         mod->brush.BoxTouchingLeafPVS = Mod_Q1BSP_BoxTouchingLeafPVS;
5652         mod->brush.BoxTouchingVisibleLeafs = Mod_Q1BSP_BoxTouchingVisibleLeafs;
5653         mod->brush.FindBoxClusters = Mod_Q1BSP_FindBoxClusters;
5654         mod->brush.LightPoint = Mod_Q3BSP_LightPoint;
5655         mod->brush.FindNonSolidLocation = Mod_Q1BSP_FindNonSolidLocation;
5656         mod->brush.PointInLeaf = Mod_Q1BSP_PointInLeaf;
5657         mod->Draw = R_Q1BSP_Draw;
5658         mod->DrawDepth = R_Q1BSP_DrawDepth;
5659         mod->DrawDebug = R_Q1BSP_DrawDebug;
5660         mod->GetLightInfo = R_Q1BSP_GetLightInfo;
5661         mod->CompileShadowVolume = R_Q1BSP_CompileShadowVolume;
5662         mod->DrawShadowVolume = R_Q1BSP_DrawShadowVolume;
5663         mod->DrawLight = R_Q1BSP_DrawLight;
5664         mod->DrawAddWaterPlanes = NULL;
5665
5666         mod_base = (unsigned char *)header;
5667
5668         // swap all the lumps
5669         header->ident = LittleLong(header->ident);
5670         header->version = LittleLong(header->version);
5671         for (i = 0;i < Q3HEADER_LUMPS;i++)
5672         {
5673                 header->lumps[i].fileofs = LittleLong(header->lumps[i].fileofs);
5674                 header->lumps[i].filelen = LittleLong(header->lumps[i].filelen);
5675         }
5676
5677         mod->brush.qw_md4sum = 0;
5678         mod->brush.qw_md4sum2 = 0;
5679         for (i = 0;i < Q3HEADER_LUMPS;i++)
5680         {
5681                 if (i == Q3LUMP_ENTITIES)
5682                         continue;
5683                 mod->brush.qw_md4sum ^= Com_BlockChecksum(mod_base + header->lumps[i].fileofs, header->lumps[i].filelen);
5684                 if (i == Q3LUMP_PVS || i == Q3LUMP_LEAFS || i == Q3LUMP_NODES)
5685                         continue;
5686                 mod->brush.qw_md4sum2 ^= Com_BlockChecksum(mod_base + header->lumps[i].fileofs, header->lumps[i].filelen);
5687         }
5688
5689         Mod_Q3BSP_LoadEntities(&header->lumps[Q3LUMP_ENTITIES]);
5690         Mod_Q3BSP_LoadTextures(&header->lumps[Q3LUMP_TEXTURES]);
5691         Mod_Q3BSP_LoadPlanes(&header->lumps[Q3LUMP_PLANES]);
5692         Mod_Q3BSP_LoadBrushSides(&header->lumps[Q3LUMP_BRUSHSIDES]);
5693         Mod_Q3BSP_LoadBrushes(&header->lumps[Q3LUMP_BRUSHES]);
5694         Mod_Q3BSP_LoadEffects(&header->lumps[Q3LUMP_EFFECTS]);
5695         Mod_Q3BSP_LoadVertices(&header->lumps[Q3LUMP_VERTICES]);
5696         Mod_Q3BSP_LoadTriangles(&header->lumps[Q3LUMP_TRIANGLES]);
5697         Mod_Q3BSP_LoadLightmaps(&header->lumps[Q3LUMP_LIGHTMAPS], &header->lumps[Q3LUMP_FACES]);
5698         Mod_Q3BSP_LoadFaces(&header->lumps[Q3LUMP_FACES]);
5699         Mod_Q3BSP_LoadModels(&header->lumps[Q3LUMP_MODELS]);
5700         Mod_Q3BSP_LoadLeafBrushes(&header->lumps[Q3LUMP_LEAFBRUSHES]);
5701         Mod_Q3BSP_LoadLeafFaces(&header->lumps[Q3LUMP_LEAFFACES]);
5702         Mod_Q3BSP_LoadLeafs(&header->lumps[Q3LUMP_LEAFS]);
5703         Mod_Q3BSP_LoadNodes(&header->lumps[Q3LUMP_NODES]);
5704         Mod_Q3BSP_LoadLightGrid(&header->lumps[Q3LUMP_LIGHTGRID]);
5705         Mod_Q3BSP_LoadPVS(&header->lumps[Q3LUMP_PVS]);
5706         loadmodel->brush.numsubmodels = loadmodel->brushq3.num_models;
5707
5708         // the MakePortals code works fine on the q3bsp data as well
5709         Mod_Q1BSP_MakePortals();
5710
5711         // FIXME: shader alpha should replace r_wateralpha support in q3bsp
5712         loadmodel->brush.supportwateralpha = true;
5713
5714         // make a single combined shadow mesh to allow optimized shadow volume creation
5715         numshadowmeshtriangles = 0;
5716         for (j = 0, surface = loadmodel->data_surfaces;j < loadmodel->num_surfaces;j++, surface++)
5717         {
5718                 surface->num_firstshadowmeshtriangle = numshadowmeshtriangles;
5719                 numshadowmeshtriangles += surface->num_triangles;
5720         }
5721         loadmodel->brush.shadowmesh = Mod_ShadowMesh_Begin(loadmodel->mempool, numshadowmeshtriangles * 3, numshadowmeshtriangles, NULL, NULL, NULL, false, false, true);
5722         for (j = 0, surface = loadmodel->data_surfaces;j < loadmodel->num_surfaces;j++, surface++)
5723                 if (surface->num_triangles > 0)
5724                         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));
5725         loadmodel->brush.shadowmesh = Mod_ShadowMesh_Finish(loadmodel->mempool, loadmodel->brush.shadowmesh, false, true, false);
5726         Mod_BuildTriangleNeighbors(loadmodel->brush.shadowmesh->neighbor3i, loadmodel->brush.shadowmesh->element3i, loadmodel->brush.shadowmesh->numtriangles);
5727
5728         loadmodel->brush.num_leafs = 0;
5729         Mod_Q3BSP_RecursiveFindNumLeafs(loadmodel->brush.data_nodes);
5730
5731         mod = loadmodel;
5732         for (i = 0;i < loadmodel->brush.numsubmodels;i++)
5733         {
5734                 if (i > 0)
5735                 {
5736                         char name[10];
5737                         // LordHavoc: only register submodels if it is the world
5738                         // (prevents external bsp models from replacing world submodels with
5739                         //  their own)
5740                         if (!loadmodel->isworldmodel)
5741                                 continue;
5742                         // duplicate the basic information
5743                         sprintf(name, "*%i", i);
5744                         mod = Mod_FindName(name);
5745                         *mod = *loadmodel;
5746                         strlcpy(mod->name, name, sizeof(mod->name));
5747                         // textures and memory belong to the main model
5748                         mod->texturepool = NULL;
5749                         mod->mempool = NULL;
5750                         mod->brush.TraceLineOfSight = NULL;
5751                         mod->brush.GetPVS = NULL;
5752                         mod->brush.FatPVS = NULL;
5753                         mod->brush.BoxTouchingPVS = NULL;
5754                         mod->brush.BoxTouchingLeafPVS = NULL;
5755                         mod->brush.BoxTouchingVisibleLeafs = NULL;
5756                         mod->brush.FindBoxClusters = NULL;
5757                         mod->brush.LightPoint = NULL;
5758                         mod->brush.FindNonSolidLocation = Mod_Q1BSP_FindNonSolidLocation;
5759                 }
5760                 mod->brush.submodel = i;
5761
5762                 // make the model surface list (used by shadowing/lighting)
5763                 mod->firstmodelsurface = mod->brushq3.data_models[i].firstface;
5764                 mod->nummodelsurfaces = mod->brushq3.data_models[i].numfaces;
5765                 mod->firstmodelbrush = mod->brushq3.data_models[i].firstbrush;
5766                 mod->nummodelbrushes = mod->brushq3.data_models[i].numbrushes;
5767                 mod->surfacelist = (int *)Mem_Alloc(loadmodel->mempool, mod->nummodelsurfaces * sizeof(*mod->surfacelist));
5768                 for (j = 0;j < mod->nummodelsurfaces;j++)
5769                         mod->surfacelist[j] = mod->firstmodelsurface + j;
5770
5771                 VectorCopy(mod->brushq3.data_models[i].mins, mod->normalmins);
5772                 VectorCopy(mod->brushq3.data_models[i].maxs, mod->normalmaxs);
5773                 // enlarge the bounding box to enclose all geometry of this model,
5774                 // because q3map2 sometimes lies (mostly to affect the lightgrid),
5775                 // which can in turn mess up the farclip (as well as culling when
5776                 // outside the level - an unimportant concern)
5777
5778                 //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]);
5779                 for (j = 0;j < mod->nummodelsurfaces;j++)
5780                 {
5781                         const msurface_t *surface = mod->data_surfaces + j + mod->firstmodelsurface;
5782                         const float *v = mod->surfmesh.data_vertex3f + 3 * surface->num_firstvertex;
5783                         int k;
5784                         if (!surface->num_vertices)
5785                                 continue;
5786                         for (k = 0;k < surface->num_vertices;k++, v += 3)
5787                         {
5788                                 mod->normalmins[0] = min(mod->normalmins[0], v[0]);
5789                                 mod->normalmins[1] = min(mod->normalmins[1], v[1]);
5790                                 mod->normalmins[2] = min(mod->normalmins[2], v[2]);
5791                                 mod->normalmaxs[0] = max(mod->normalmaxs[0], v[0]);
5792                                 mod->normalmaxs[1] = max(mod->normalmaxs[1], v[1]);
5793                                 mod->normalmaxs[2] = max(mod->normalmaxs[2], v[2]);
5794                         }
5795                 }
5796                 //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]);
5797                 corner[0] = max(fabs(mod->normalmins[0]), fabs(mod->normalmaxs[0]));
5798                 corner[1] = max(fabs(mod->normalmins[1]), fabs(mod->normalmaxs[1]));
5799                 corner[2] = max(fabs(mod->normalmins[2]), fabs(mod->normalmaxs[2]));
5800                 modelradius = sqrt(corner[0]*corner[0]+corner[1]*corner[1]+corner[2]*corner[2]);
5801                 yawradius = sqrt(corner[0]*corner[0]+corner[1]*corner[1]);
5802                 mod->rotatedmins[0] = mod->rotatedmins[1] = mod->rotatedmins[2] = -modelradius;
5803                 mod->rotatedmaxs[0] = mod->rotatedmaxs[1] = mod->rotatedmaxs[2] = modelradius;
5804                 mod->yawmaxs[0] = mod->yawmaxs[1] = yawradius;
5805                 mod->yawmins[0] = mod->yawmins[1] = -yawradius;
5806                 mod->yawmins[2] = mod->normalmins[2];
5807                 mod->yawmaxs[2] = mod->normalmaxs[2];
5808                 mod->radius = modelradius;
5809                 mod->radius2 = modelradius * modelradius;
5810
5811                 for (j = 0;j < mod->nummodelsurfaces;j++)
5812                         if (mod->data_surfaces[j + mod->firstmodelsurface].texture->basematerialflags & MATERIALFLAG_SKY)
5813                                 break;
5814                 if (j < mod->nummodelsurfaces)
5815                         mod->DrawSky = R_Q1BSP_DrawSky;
5816                 else
5817                         mod->DrawSky = NULL;
5818
5819                 for (j = 0;j < mod->nummodelsurfaces;j++)
5820                         if (mod->data_surfaces[j + mod->firstmodelsurface].texture->basematerialflags & (MATERIALFLAG_WATERSHADER | MATERIALFLAG_REFRACTION | MATERIALFLAG_REFLECTION))
5821                                 break;
5822                 if (j < mod->nummodelsurfaces)
5823                         mod->DrawAddWaterPlanes = R_Q1BSP_DrawAddWaterPlanes;
5824                 else
5825                         mod->DrawAddWaterPlanes = NULL;
5826         }
5827 }
5828
5829 void Mod_IBSP_Load(dp_model_t *mod, void *buffer, void *bufferend)
5830 {
5831         int i = LittleLong(((int *)buffer)[1]);
5832         if (i == Q3BSPVERSION)
5833                 Mod_Q3BSP_Load(mod,buffer, bufferend);
5834         else if (i == Q2BSPVERSION)
5835                 Mod_Q2BSP_Load(mod,buffer, bufferend);
5836         else
5837                 Host_Error("Mod_IBSP_Load: unknown/unsupported version %i", i);
5838 }
5839
5840 void Mod_MAP_Load(dp_model_t *mod, void *buffer, void *bufferend)
5841 {
5842         Host_Error("Mod_MAP_Load: not yet implemented");
5843 }
5844
5845 qboolean Mod_CanSeeBox_Trace(int numsamples, float t, dp_model_t *model, vec3_t eye, vec3_t minsX, vec3_t maxsX)
5846 {
5847         // we already have done PVS culling at this point...
5848         // so we don't need to do it again.
5849
5850         int i;
5851         vec3_t testorigin, mins, maxs;
5852
5853         testorigin[0] = (minsX[0] + maxsX[0]) * 0.5;
5854         testorigin[1] = (minsX[1] + maxsX[1]) * 0.5;
5855         testorigin[2] = (minsX[2] + maxsX[2]) * 0.5;
5856
5857         if(model->brush.TraceLineOfSight(model, eye, testorigin))
5858                 return 1;
5859
5860         // expand the box a little
5861         mins[0] = (t+1) * minsX[0] - t * maxsX[0];
5862         maxs[0] = (t+1) * maxsX[0] - t * minsX[0];
5863         mins[1] = (t+1) * minsX[1] - t * maxsX[1];
5864         maxs[1] = (t+1) * maxsX[1] - t * minsX[1];
5865         mins[2] = (t+1) * minsX[2] - t * maxsX[2];
5866         maxs[2] = (t+1) * maxsX[2] - t * minsX[2];
5867
5868         for(i = 0; i != numsamples; ++i)
5869         {
5870                 testorigin[0] = lhrandom(mins[0], maxs[0]);
5871                 testorigin[1] = lhrandom(mins[1], maxs[1]);
5872                 testorigin[2] = lhrandom(mins[2], maxs[2]);
5873
5874                 if(model->brush.TraceLineOfSight(model, eye, testorigin))
5875                         return 1;
5876         }
5877
5878         return 0;
5879 }
5880