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 mcbsp = {0, "mcbsp", "0", "indicates the current map is mcbsp format (useful to know because of different bounding box sizes)"};
  32 cvar_t r_novis = {0, "r_novis", "0", "draws whole level, see also sv_cullentities_pvs 0"};
  33 cvar_t r_lightmaprgba = {0, "r_lightmaprgba", "1", "whether to use RGBA (32bit) or RGB (24bit) lightmaps"};
  34 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)"};
  35 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)"};
  36 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)"};
  37 cvar_t r_subdivisions_maxtess = {0, "r_subdivisions_maxtess", "1024", "maximum number of subdivisions (prevents curves beyond a certain detail level, limits smoothing)"};
  38 cvar_t r_subdivisions_maxvertices = {0, "r_subdivisions_maxvertices", "65536", "maximum vertices allowed per subdivided curve"};
  39 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)"};
  40 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)"};
  41 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)"};
  42 cvar_t r_subdivisions_collision_maxvertices = {0, "r_subdivisions_collision_maxvertices", "4225", "maximum vertices allowed per subdivided curve"};
  43 cvar_t mod_q3bsp_curves_collisions = {0, "mod_q3bsp_curves_collisions", "1", "enables collisions with curves (SLOW)"};
  44 cvar_t mod_q3bsp_optimizedtraceline = {0, "mod_q3bsp_optimizedtraceline", "1", "whether to use optimized traceline code for line traces (as opposed to tracebox code)"};
  45 cvar_t mod_q3bsp_debugtracebrush = {0, "mod_q3bsp_debugtracebrush", "0", "selects different tracebrush bsp recursion algorithms (for debugging purposes only)"};
  46
  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(&mcbsp);
  58         Cvar_RegisterVariable(&r_novis);
  59         Cvar_RegisterVariable(&r_lightmaprgba);
  60         Cvar_RegisterVariable(&r_nosurftextures);
  61         Cvar_RegisterVariable(&r_subdivisions_tolerance);
  62         Cvar_RegisterVariable(&r_subdivisions_mintess);
  63         Cvar_RegisterVariable(&r_subdivisions_maxtess);
  64         Cvar_RegisterVariable(&r_subdivisions_maxvertices);
  65         Cvar_RegisterVariable(&r_subdivisions_collision_tolerance);
  66         Cvar_RegisterVariable(&r_subdivisions_collision_mintess);
  67         Cvar_RegisterVariable(&r_subdivisions_collision_maxtess);
  68         Cvar_RegisterVariable(&r_subdivisions_collision_maxvertices);
  69         Cvar_RegisterVariable(&mod_q3bsp_curves_collisions);
  70         Cvar_RegisterVariable(&mod_q3bsp_optimizedtraceline);
  71         Cvar_RegisterVariable(&mod_q3bsp_debugtracebrush);
  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(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(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(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(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(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(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         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(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(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(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         dclipnode_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         while (num >= 0)
 785                 num = t->hull->clipnodes[num].children[(t->hull->planes[t->hull->clipnodes[num].planenum].type < 3 ? t->start[t->hull->planes[t->hull->clipnodes[num].planenum].type] : DotProduct(t->hull->planes[t->hull->clipnodes[num].planenum].normal, t->start)) < t->hull->planes[t->hull->clipnodes[num].planenum].dist];
 786         num = Mod_Q1BSP_SuperContentsFromNativeContents(NULL, num);
 787         t->trace->startsupercontents |= num;
 788         if (num & SUPERCONTENTS_LIQUIDSMASK)
 789                 t->trace->inwater = true;
 790         if (num == 0)
 791                 t->trace->inopen = true;
 792         if (num & t->trace->hitsupercontentsmask)
 793         {
 794                 t->trace->allsolid = t->trace->startsolid = true;
 795                 return HULLCHECKSTATE_SOLID;
 796         }
 797         else
 798         {
 799                 t->trace->allsolid = t->trace->startsolid = false;
 800                 return HULLCHECKSTATE_EMPTY;
 801         }
 802 }
 803 //#endif
 804
 805 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)
 806 {
 807         // this function currently only supports same size start and end
 808         double boxsize[3];
 809         RecursiveHullCheckTraceInfo_t rhc;
 810
 811         memset(&rhc, 0, sizeof(rhc));
 812         memset(trace, 0, sizeof(trace_t));
 813         rhc.trace = trace;
 814         rhc.trace->hitsupercontentsmask = hitsupercontentsmask;
 815         rhc.trace->fraction = 1;
 816         rhc.trace->realfraction = 1;
 817         rhc.trace->allsolid = true;
 818         VectorSubtract(boxmaxs, boxmins, boxsize);
 819         if (boxsize[0] < 3)
 820                 rhc.hull = &model->brushq1.hulls[0]; // 0x0x0
 821         else if (model->brush.ismcbsp)
 822         {
 823                 if (boxsize[2] < 48) // pick the nearest of 40 or 56
 824                         rhc.hull = &model->brushq1.hulls[2]; // 16x16x40
 825                 else
 826                         rhc.hull = &model->brushq1.hulls[1]; // 16x16x56
 827         }
 828         else if (model->brush.ishlbsp)
 829         {
 830                 // LordHavoc: this has to have a minor tolerance (the .1) because of
 831                 // minor float precision errors from the box being transformed around
 832                 if (boxsize[0] < 32.1)
 833                 {
 834                         if (boxsize[2] < 54) // pick the nearest of 36 or 72
 835                                 rhc.hull = &model->brushq1.hulls[3]; // 32x32x36
 836                         else
 837                                 rhc.hull = &model->brushq1.hulls[1]; // 32x32x72
 838                 }
 839                 else
 840                         rhc.hull = &model->brushq1.hulls[2]; // 64x64x64
 841         }
 842         else
 843         {
 844                 // LordHavoc: this has to have a minor tolerance (the .1) because of
 845                 // minor float precision errors from the box being transformed around
 846                 if (boxsize[0] < 32.1)
 847                         rhc.hull = &model->brushq1.hulls[1]; // 32x32x56
 848                 else
 849                         rhc.hull = &model->brushq1.hulls[2]; // 64x64x88
 850         }
 851         VectorMAMAM(1, start, 1, boxmins, -1, rhc.hull->clip_mins, rhc.start);
 852         VectorMAMAM(1, end, 1, boxmins, -1, rhc.hull->clip_mins, rhc.end);
 853         VectorSubtract(rhc.end, rhc.start, rhc.dist);
 854 #if COLLISIONPARANOID >= 2
 855         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]);
 856         Mod_Q1BSP_RecursiveHullCheck(&rhc, rhc.hull->firstclipnode, 0, 1, rhc.start, rhc.end);
 857         {
 858
 859                 double test[3];
 860                 trace_t testtrace;
 861                 VectorLerp(rhc.start, rhc.trace->fraction, rhc.end, test);
 862                 memset(&testtrace, 0, sizeof(trace_t));
 863                 rhc.trace = &testtrace;
 864                 rhc.trace->hitsupercontentsmask = hitsupercontentsmask;
 865                 rhc.trace->fraction = 1;
 866                 rhc.trace->realfraction = 1;
 867                 rhc.trace->allsolid = true;
 868                 VectorCopy(test, rhc.start);
 869                 VectorCopy(test, rhc.end);
 870                 VectorClear(rhc.dist);
 871                 Mod_Q1BSP_RecursiveHullCheckPoint(&rhc, rhc.hull->firstclipnode);
 872                 //Mod_Q1BSP_RecursiveHullCheck(&rhc, rhc.hull->firstclipnode, 0, 1, test, test);
 873                 if (!trace->startsolid && testtrace.startsolid)
 874                         Con_Printf(" - ended in solid!\n");
 875         }
 876         Con_Print("\n");
 877 #else
 878         if (VectorLength2(rhc.dist))
 879                 Mod_Q1BSP_RecursiveHullCheck(&rhc, rhc.hull->firstclipnode, 0, 1, rhc.start, rhc.end);
 880         else
 881                 Mod_Q1BSP_RecursiveHullCheckPoint(&rhc, rhc.hull->firstclipnode);
 882 #endif
 883 }
 884
 885 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)
 886 {
 887 #if 1
 888         colbrushf_t cbox;
 889         colplanef_t cbox_planes[6];
 890         cbox.supercontents = boxsupercontents;
 891         cbox.numplanes = 6;
 892         cbox.numpoints = 0;
 893         cbox.numtriangles = 0;
 894         cbox.planes = cbox_planes;
 895         cbox.points = NULL;
 896         cbox.elements = NULL;
 897         cbox.markframe = 0;
 898         cbox.mins[0] = 0;
 899         cbox.mins[1] = 0;
 900         cbox.mins[2] = 0;
 901         cbox.maxs[0] = 0;
 902         cbox.maxs[1] = 0;
 903         cbox.maxs[2] = 0;
 904         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];
 905         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];
 906         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];
 907         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];
 908         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];
 909         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];
 910         cbox_planes[0].q3surfaceflags = boxq3surfaceflags;cbox_planes[0].texture = boxtexture;
 911         cbox_planes[1].q3surfaceflags = boxq3surfaceflags;cbox_planes[1].texture = boxtexture;
 912         cbox_planes[2].q3surfaceflags = boxq3surfaceflags;cbox_planes[2].texture = boxtexture;
 913         cbox_planes[3].q3surfaceflags = boxq3surfaceflags;cbox_planes[3].texture = boxtexture;
 914         cbox_planes[4].q3surfaceflags = boxq3surfaceflags;cbox_planes[4].texture = boxtexture;
 915         cbox_planes[5].q3surfaceflags = boxq3surfaceflags;cbox_planes[5].texture = boxtexture;
 916         memset(trace, 0, sizeof(trace_t));
 917         trace->hitsupercontentsmask = hitsupercontentsmask;
 918         trace->fraction = 1;
 919         trace->realfraction = 1;
 920         Collision_TraceLineBrushFloat(trace, start, end, &cbox, &cbox);
 921 #else
 922         RecursiveHullCheckTraceInfo_t rhc;
 923         static hull_t box_hull;
 924         static dclipnode_t box_clipnodes[6];
 925         static mplane_t box_planes[6];
 926         // fill in a default trace
 927         memset(&rhc, 0, sizeof(rhc));
 928         memset(trace, 0, sizeof(trace_t));
 929         //To keep everything totally uniform, bounding boxes are turned into small
 930         //BSP trees instead of being compared directly.
 931         // create a temp hull from bounding box sizes
 932         box_planes[0].dist = cmaxs[0] - mins[0];
 933         box_planes[1].dist = cmins[0] - maxs[0];
 934         box_planes[2].dist = cmaxs[1] - mins[1];
 935         box_planes[3].dist = cmins[1] - maxs[1];
 936         box_planes[4].dist = cmaxs[2] - mins[2];
 937         box_planes[5].dist = cmins[2] - maxs[2];
 938 #if COLLISIONPARANOID >= 3
 939         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]);
 940 #endif
 941
 942         if (box_hull.clipnodes == NULL)
 943         {
 944                 int i, side;
 945
 946                 //Set up the planes and clipnodes so that the six floats of a bounding box
 947                 //can just be stored out and get a proper hull_t structure.
 948
 949                 box_hull.clipnodes = box_clipnodes;
 950                 box_hull.planes = box_planes;
 951                 box_hull.firstclipnode = 0;
 952                 box_hull.lastclipnode = 5;
 953
 954                 for (i = 0;i < 6;i++)
 955                 {
 956                         box_clipnodes[i].planenum = i;
 957
 958                         side = i&1;
 959
 960                         box_clipnodes[i].children[side] = CONTENTS_EMPTY;
 961                         if (i != 5)
 962                                 box_clipnodes[i].children[side^1] = i + 1;
 963                         else
 964                                 box_clipnodes[i].children[side^1] = CONTENTS_SOLID;
 965
 966                         box_planes[i].type = i>>1;
 967                         box_planes[i].normal[i>>1] = 1;
 968                 }
 969         }
 970
 971         // trace a line through the generated clipping hull
 972         //rhc.boxsupercontents = boxsupercontents;
 973         rhc.hull = &box_hull;
 974         rhc.trace = trace;
 975         rhc.trace->hitsupercontentsmask = hitsupercontentsmask;
 976         rhc.trace->fraction = 1;
 977         rhc.trace->realfraction = 1;
 978         rhc.trace->allsolid = true;
 979         VectorCopy(start, rhc.start);
 980         VectorCopy(end, rhc.end);
 981         VectorSubtract(rhc.end, rhc.start, rhc.dist);
 982         Mod_Q1BSP_RecursiveHullCheck(&rhc, rhc.hull->firstclipnode, 0, 1, rhc.start, rhc.end);
 983         //VectorMA(rhc.start, rhc.trace->fraction, rhc.dist, rhc.trace->endpos);
 984         if (rhc.trace->startsupercontents)
 985                 rhc.trace->startsupercontents = boxsupercontents;
 986 #endif
 987 }
 988
 989 static int Mod_Q1BSP_LightPoint_RecursiveBSPNode(model_t *model, vec3_t ambientcolor, vec3_t diffusecolor, vec3_t diffusenormal, const mnode_t *node, float x, float y, float startz, float endz)
 990 {
 991         int side;
 992         float front, back;
 993         float mid, distz = endz - startz;
 994
 995 loc0:
 996         if (!node->plane)
 997                 return false;           // didn't hit anything
 998
 999         switch (node->plane->type)
1000         {
1001         case PLANE_X:
1002                 node = node->children[x < node->plane->dist];
1003                 goto loc0;
1004         case PLANE_Y:
1005                 node = node->children[y < node->plane->dist];
1006                 goto loc0;
1007         case PLANE_Z:
1008                 side = startz < node->plane->dist;
1009                 if ((endz < node->plane->dist) == side)
1010                 {
1011                         node = node->children[side];
1012                         goto loc0;
1013                 }
1014                 // found an intersection
1015                 mid = node->plane->dist;
1016                 break;
1017         default:
1018                 back = front = x * node->plane->normal[0] + y * node->plane->normal[1];
1019                 front += startz * node->plane->normal[2];
1020                 back += endz * node->plane->normal[2];
1021                 side = front < node->plane->dist;
1022                 if ((back < node->plane->dist) == side)
1023                 {
1024                         node = node->children[side];
1025                         goto loc0;
1026                 }
1027                 // found an intersection
1028                 mid = startz + distz * (front - node->plane->dist) / (front - back);
1029                 break;
1030         }
1031
1032         // go down front side
1033         if (node->children[side]->plane && Mod_Q1BSP_LightPoint_RecursiveBSPNode(model, ambientcolor, diffusecolor, diffusenormal, node->children[side], x, y, startz, mid))
1034                 return true;    // hit something
1035         else
1036         {
1037                 // check for impact on this node
1038                 if (node->numsurfaces)
1039                 {
1040                         int i, ds, dt;
1041                         msurface_t *surface;
1042
1043                         surface = model->data_surfaces + node->firstsurface;
1044                         for (i = 0;i < node->numsurfaces;i++, surface++)
1045                         {
1046                                 if (!(surface->texture->basematerialflags & MATERIALFLAG_WALL) || !surface->lightmapinfo->samples)
1047                                         continue;       // no lightmaps
1048
1049                                 ds = (int) (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];
1050                                 dt = (int) (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];
1051
1052                                 if (ds >= 0 && ds < surface->lightmapinfo->extents[0] && dt >= 0 && dt < surface->lightmapinfo->extents[1])
1053                                 {
1054                                         unsigned char *lightmap;
1055                                         int lmwidth, lmheight, maps, line3, size3, dsfrac = ds & 15, dtfrac = dt & 15, scale = 0, r00 = 0, g00 = 0, b00 = 0, r01 = 0, g01 = 0, b01 = 0, r10 = 0, g10 = 0, b10 = 0, r11 = 0, g11 = 0, b11 = 0;
1056                                         lmwidth = ((surface->lightmapinfo->extents[0]>>4)+1);
1057                                         lmheight = ((surface->lightmapinfo->extents[1]>>4)+1);
1058                                         line3 = lmwidth * 3; // LordHavoc: *3 for colored lighting
1059                                         size3 = lmwidth * lmheight * 3; // LordHavoc: *3 for colored lighting
1060
1061                                         lightmap = surface->lightmapinfo->samples + ((dt>>4) * lmwidth + (ds>>4))*3; // LordHavoc: *3 for colored lighting
1062
1063                                         for (maps = 0;maps < MAXLIGHTMAPS && surface->lightmapinfo->styles[maps] != 255;maps++)
1064                                         {
1065                                                 scale = r_refdef.lightstylevalue[surface->lightmapinfo->styles[maps]];
1066                                                 r00 += lightmap[      0] * scale;g00 += lightmap[      1] * scale;b00 += lightmap[      2] * scale;
1067                                                 r01 += lightmap[      3] * scale;g01 += lightmap[      4] * scale;b01 += lightmap[      5] * scale;
1068                                                 r10 += lightmap[line3+0] * scale;g10 += lightmap[line3+1] * scale;b10 += lightmap[line3+2] * scale;
1069                                                 r11 += lightmap[line3+3] * scale;g11 += lightmap[line3+4] * scale;b11 += lightmap[line3+5] * scale;
1070                                                 lightmap += size3;
1071                                         }
1072
1073 /*
1074 LordHavoc: here's the readable version of the interpolation
1075 code, not quite as easy for the compiler to optimize...
1076
1077 dsfrac is the X position in the lightmap pixel, * 16
1078 dtfrac is the Y position in the lightmap pixel, * 16
1079 r00 is top left corner, r01 is top right corner
1080 r10 is bottom left corner, r11 is bottom right corner
1081 g and b are the same layout.
1082 r0 and r1 are the top and bottom intermediate results
1083
1084 first we interpolate the top two points, to get the top
1085 edge sample
1086
1087         r0 = (((r01-r00) * dsfrac) >> 4) + r00;
1088         g0 = (((g01-g00) * dsfrac) >> 4) + g00;
1089         b0 = (((b01-b00) * dsfrac) >> 4) + b00;
1090
1091 then we interpolate the bottom two points, to get the
1092 bottom edge sample
1093
1094         r1 = (((r11-r10) * dsfrac) >> 4) + r10;
1095         g1 = (((g11-g10) * dsfrac) >> 4) + g10;
1096         b1 = (((b11-b10) * dsfrac) >> 4) + b10;
1097
1098 then we interpolate the top and bottom samples to get the
1099 middle sample (the one which was requested)
1100
1101         r = (((r1-r0) * dtfrac) >> 4) + r0;
1102         g = (((g1-g0) * dtfrac) >> 4) + g0;
1103         b = (((b1-b0) * dtfrac) >> 4) + b0;
1104 */
1105
1106                                         ambientcolor[0] += (float) ((((((((r11-r10) * dsfrac) >> 4) + r10)-((((r01-r00) * dsfrac) >> 4) + r00)) * dtfrac) >> 4) + ((((r01-r00) * dsfrac) >> 4) + r00)) * (1.0f / 32768.0f);
1107                                         ambientcolor[1] += (float) ((((((((g11-g10) * dsfrac) >> 4) + g10)-((((g01-g00) * dsfrac) >> 4) + g00)) * dtfrac) >> 4) + ((((g01-g00) * dsfrac) >> 4) + g00)) * (1.0f / 32768.0f);
1108                                         ambientcolor[2] += (float) ((((((((b11-b10) * dsfrac) >> 4) + b10)-((((b01-b00) * dsfrac) >> 4) + b00)) * dtfrac) >> 4) + ((((b01-b00) * dsfrac) >> 4) + b00)) * (1.0f / 32768.0f);
1109                                         return true; // success
1110                                 }
1111                         }
1112                 }
1113
1114                 // go down back side
1115                 node = node->children[side ^ 1];
1116                 startz = mid;
1117                 distz = endz - startz;
1118                 goto loc0;
1119         }
1120 }
1121
1122 void Mod_Q1BSP_LightPoint(model_t *model, const vec3_t p, vec3_t ambientcolor, vec3_t diffusecolor, vec3_t diffusenormal)
1123 {
1124         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);
1125         // pretend lighting is coming down from above (due to lack of a lightgrid to know primary lighting direction)
1126         VectorSet(diffusenormal, 0, 0, 1);
1127 }
1128
1129 static void Mod_Q1BSP_DecompressVis(const unsigned char *in, const unsigned char *inend, unsigned char *out, unsigned char *outend)
1130 {
1131         int c;
1132         unsigned char *outstart = out;
1133         while (out < outend)
1134         {
1135                 if (in == inend)
1136                 {
1137                         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));
1138                         return;
1139                 }
1140                 c = *in++;
1141                 if (c)
1142                         *out++ = c;
1143                 else
1144                 {
1145                         if (in == inend)
1146                         {
1147                                 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));
1148                                 return;
1149                         }
1150                         for (c = *in++;c > 0;c--)
1151                         {
1152                                 if (out == outend)
1153                                 {
1154                                         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));
1155                                         return;
1156                                 }
1157                                 *out++ = 0;
1158                         }
1159                 }
1160         }
1161 }
1162
1163 /*
1164 =============
1165 R_Q1BSP_LoadSplitSky
1166
1167 A sky texture is 256*128, with the right side being a masked overlay
1168 ==============
1169 */
1170 void R_Q1BSP_LoadSplitSky (unsigned char *src, int width, int height, int bytesperpixel)
1171 {
1172         int i, j;
1173         unsigned solidpixels[128*128], alphapixels[128*128];
1174
1175         // if sky isn't the right size, just use it as a solid layer
1176         if (width != 256 || height != 128)
1177         {
1178                 loadmodel->brush.solidskytexture = R_LoadTexture2D(loadmodel->texturepool, "sky_solidtexture", width, height, src, bytesperpixel == 4 ? TEXTYPE_RGBA : TEXTYPE_PALETTE, TEXF_PRECACHE, bytesperpixel == 1 ? palette_complete : NULL);
1179                 loadmodel->brush.alphaskytexture = NULL;
1180                 return;
1181         }
1182
1183         if (bytesperpixel == 4)
1184         {
1185                 for (i = 0;i < 128;i++)
1186                 {
1187                         for (j = 0;j < 128;j++)
1188                         {
1189                                 solidpixels[(i*128) + j] = ((unsigned *)src)[i*256+j+128];
1190                                 alphapixels[(i*128) + j] = ((unsigned *)src)[i*256+j];
1191                         }
1192                 }
1193         }
1194         else
1195         {
1196                 // make an average value for the back to avoid
1197                 // a fringe on the top level
1198                 int p, r, g, b;
1199                 union
1200                 {
1201                         unsigned int i;
1202                         unsigned char b[4];
1203                 }
1204                 rgba;
1205                 r = g = b = 0;
1206                 for (i = 0;i < 128;i++)
1207                 {
1208                         for (j = 0;j < 128;j++)
1209                         {
1210                                 rgba.i = palette_complete[src[i*256 + j + 128]];
1211                                 r += rgba.b[0];
1212                                 g += rgba.b[1];
1213                                 b += rgba.b[2];
1214                         }
1215                 }
1216                 rgba.b[0] = r/(128*128);
1217                 rgba.b[1] = g/(128*128);
1218                 rgba.b[2] = b/(128*128);
1219                 rgba.b[3] = 0;
1220                 for (i = 0;i < 128;i++)
1221                 {
1222                         for (j = 0;j < 128;j++)
1223                         {
1224                                 solidpixels[(i*128) + j] = palette_complete[src[i*256 + j + 128]];
1225                                 alphapixels[(i*128) + j] = (p = src[i*256 + j]) ? palette_complete[p] : rgba.i;
1226                         }
1227                 }
1228         }
1229
1230         loadmodel->brush.solidskytexture = R_LoadTexture2D(loadmodel->texturepool, "sky_solidtexture", 128, 128, (unsigned char *) solidpixels, TEXTYPE_RGBA, TEXF_PRECACHE, NULL);
1231         loadmodel->brush.alphaskytexture = R_LoadTexture2D(loadmodel->texturepool, "sky_alphatexture", 128, 128, (unsigned char *) alphapixels, TEXTYPE_RGBA, TEXF_ALPHA | TEXF_PRECACHE, NULL);
1232 }
1233
1234 static void Mod_Q1BSP_LoadTextures(lump_t *l)
1235 {
1236         int i, j, k, num, max, altmax, mtwidth, mtheight, *dofs, incomplete;
1237         miptex_t *dmiptex;
1238         texture_t *tx, *tx2, *anims[10], *altanims[10];
1239         dmiptexlump_t *m;
1240         unsigned char *data, *mtdata;
1241         const char *s;
1242         char mapname[MAX_QPATH], name[MAX_QPATH];
1243
1244         loadmodel->data_textures = NULL;
1245
1246         // add two slots for notexture walls and notexture liquids
1247         if (l->filelen)
1248         {
1249                 m = (dmiptexlump_t *)(mod_base + l->fileofs);
1250                 m->nummiptex = LittleLong (m->nummiptex);
1251                 loadmodel->num_textures = m->nummiptex + 2;
1252         }
1253         else
1254         {
1255                 m = NULL;
1256                 loadmodel->num_textures = 2;
1257         }
1258
1259         loadmodel->data_textures = (texture_t *)Mem_Alloc(loadmodel->mempool, loadmodel->num_textures * sizeof(texture_t));
1260
1261         // fill out all slots with notexture
1262         for (i = 0, tx = loadmodel->data_textures;i < loadmodel->num_textures;i++, tx++)
1263         {
1264                 strlcpy(tx->name, "NO TEXTURE FOUND", sizeof(tx->name));
1265                 tx->width = 16;
1266                 tx->height = 16;
1267                 tx->numskinframes = 1;
1268                 tx->skinframerate = 1;
1269                 tx->currentskinframe = tx->skinframes;
1270                 tx->skinframes[0].base = r_texture_notexture;
1271                 tx->basematerialflags = 0;
1272                 if (i == loadmodel->num_textures - 1)
1273                 {
1274                         tx->basematerialflags |= MATERIALFLAG_WATER | MATERIALFLAG_LIGHTBOTHSIDES | MATERIALFLAG_NOSHADOW;
1275                         tx->supercontents = mod_q1bsp_texture_water.supercontents;
1276                         tx->surfaceflags = mod_q1bsp_texture_water.surfaceflags;
1277                 }
1278                 else
1279                 {
1280                         tx->basematerialflags |= MATERIALFLAG_WALL;
1281                         tx->supercontents = mod_q1bsp_texture_solid.supercontents;
1282                         tx->surfaceflags = mod_q1bsp_texture_solid.surfaceflags;
1283                 }
1284                 tx->currentframe = tx;
1285         }
1286
1287         if (!m)
1288                 return;
1289
1290         s = loadmodel->name;
1291         if (!strncasecmp(s, "maps/", 5))
1292                 s += 5;
1293         FS_StripExtension(s, mapname, sizeof(mapname));
1294
1295         // just to work around bounds checking when debugging with it (array index out of bounds error thing)
1296         dofs = m->dataofs;
1297         // LordHavoc: mostly rewritten map texture loader
1298         for (i = 0;i < m->nummiptex;i++)
1299         {
1300                 dofs[i] = LittleLong(dofs[i]);
1301                 if (dofs[i] == -1 || r_nosurftextures.integer)
1302                         continue;
1303                 dmiptex = (miptex_t *)((unsigned char *)m + dofs[i]);
1304
1305                 // make sure name is no more than 15 characters
1306                 for (j = 0;dmiptex->name[j] && j < 15;j++)
1307                         name[j] = dmiptex->name[j];
1308                 name[j] = 0;
1309
1310                 mtwidth = LittleLong(dmiptex->width);
1311                 mtheight = LittleLong(dmiptex->height);
1312                 mtdata = NULL;
1313                 j = LittleLong(dmiptex->offsets[0]);
1314                 if (j)
1315                 {
1316                         // texture included
1317                         if (j < 40 || j + mtwidth * mtheight > l->filelen)
1318                         {
1319                                 Con_Printf("Texture \"%s\" in \"%s\"is corrupt or incomplete\n", dmiptex->name, loadmodel->name);
1320                                 continue;
1321                         }
1322                         mtdata = (unsigned char *)dmiptex + j;
1323                 }
1324
1325                 if ((mtwidth & 15) || (mtheight & 15))
1326                         Con_Printf("warning: texture \"%s\" in \"%s\" is not 16 aligned\n", dmiptex->name, loadmodel->name);
1327
1328                 // LordHavoc: force all names to lowercase
1329                 for (j = 0;name[j];j++)
1330                         if (name[j] >= 'A' && name[j] <= 'Z')
1331                                 name[j] += 'a' - 'A';
1332
1333                 tx = loadmodel->data_textures + i;
1334                 strlcpy(tx->name, name, sizeof(tx->name));
1335                 tx->width = mtwidth;
1336                 tx->height = mtheight;
1337
1338                 if (!tx->name[0])
1339                 {
1340                         sprintf(tx->name, "unnamed%i", i);
1341                         Con_Printf("warning: unnamed texture in %s, renaming to %s\n", loadmodel->name, tx->name);
1342                 }
1343
1344                 if (cls.state != ca_dedicated)
1345                 {
1346                         // LordHavoc: HL sky textures are entirely different than quake
1347                         if (!loadmodel->brush.ishlbsp && !strncmp(tx->name, "sky", 3) && mtwidth == 256 && mtheight == 128)
1348                         {
1349                                 if (loadmodel->isworldmodel)
1350                                 {
1351                                         data = loadimagepixels(tx->name, false, 0, 0);
1352                                         if (data)
1353                                         {
1354                                                 R_Q1BSP_LoadSplitSky(data, image_width, image_height, 4);
1355                                                 Mem_Free(data);
1356                                         }
1357                                         else if (mtdata != NULL)
1358                                                 R_Q1BSP_LoadSplitSky(mtdata, mtwidth, mtheight, 1);
1359                                 }
1360                         }
1361                         else
1362                         {
1363                                 if (!Mod_LoadSkinFrame(&tx->skinframes[0], gamemode == GAME_TENEBRAE ? tx->name : va("textures/%s/%s", mapname, tx->name), TEXF_MIPMAP | TEXF_ALPHA | TEXF_PRECACHE | TEXF_PICMIP, false, true)
1364                                  && !Mod_LoadSkinFrame(&tx->skinframes[0], gamemode == GAME_TENEBRAE ? tx->name : va("textures/%s", tx->name), TEXF_MIPMAP | TEXF_ALPHA | TEXF_PRECACHE | TEXF_PICMIP, false, true))
1365                                 {
1366                                         // did not find external texture, load it from the bsp or wad3
1367                                         if (loadmodel->brush.ishlbsp)
1368                                         {
1369                                                 // internal texture overrides wad
1370                                                 unsigned char *pixels, *freepixels;
1371                                                 pixels = freepixels = NULL;
1372                                                 if (mtdata)
1373                                                         pixels = W_ConvertWAD3Texture(dmiptex);
1374                                                 if (pixels == NULL)
1375                                                         pixels = freepixels = W_GetTexture(tx->name);
1376                                                 if (pixels != NULL)
1377                                                 {
1378                                                         tx->width = image_width;
1379                                                         tx->height = image_height;
1380                                                         Mod_LoadSkinFrame_Internal(&tx->skinframes[0], tx->name, TEXF_MIPMAP | TEXF_ALPHA | TEXF_PRECACHE | TEXF_PICMIP, false, false, pixels, image_width, image_height, 32, NULL, NULL);
1381                                                 }
1382                                                 if (freepixels)
1383                                                         Mem_Free(freepixels);
1384                                         }
1385                                         else if (mtdata) // texture included
1386                                                 Mod_LoadSkinFrame_Internal(&tx->skinframes[0], tx->name, TEXF_MIPMAP | TEXF_PRECACHE | TEXF_PICMIP, false, r_fullbrights.integer, mtdata, tx->width, tx->height, 8, NULL, NULL);
1387                                 }
1388                         }
1389                         if (tx->skinframes[0].base == NULL)
1390                         {
1391                                 // no texture found
1392                                 tx->width = 16;
1393                                 tx->height = 16;
1394                                 tx->skinframes[0].base = r_texture_notexture;
1395                         }
1396                 }
1397
1398                 tx->basematerialflags = 0;
1399                 if (tx->name[0] == '*')
1400                 {
1401                         // LordHavoc: some turbulent textures should not be affected by wateralpha
1402                         if (strncmp(tx->name,"*lava",5)
1403                          && strncmp(tx->name,"*teleport",9)
1404                          && strncmp(tx->name,"*rift",5)) // Scourge of Armagon texture
1405                                 tx->basematerialflags |= MATERIALFLAG_WATERALPHA | MATERIALFLAG_NOSHADOW;
1406                         if (!strncmp(tx->name, "*lava", 5))
1407                         {
1408                                 tx->supercontents = mod_q1bsp_texture_lava.supercontents;
1409                                 tx->surfaceflags = mod_q1bsp_texture_lava.surfaceflags;
1410                         }
1411                         else if (!strncmp(tx->name, "*slime", 6))
1412                         {
1413                                 tx->supercontents = mod_q1bsp_texture_slime.supercontents;
1414                                 tx->surfaceflags = mod_q1bsp_texture_slime.surfaceflags;
1415                         }
1416                         else
1417                         {
1418                                 tx->supercontents = mod_q1bsp_texture_water.supercontents;
1419                                 tx->surfaceflags = mod_q1bsp_texture_water.surfaceflags;
1420                         }
1421                         tx->basematerialflags |= MATERIALFLAG_WATER | MATERIALFLAG_LIGHTBOTHSIDES | MATERIALFLAG_NOSHADOW;
1422                 }
1423                 else if (tx->name[0] == 's' && tx->name[1] == 'k' && tx->name[2] == 'y')
1424                 {
1425                         tx->supercontents = mod_q1bsp_texture_sky.supercontents;
1426                         tx->surfaceflags = mod_q1bsp_texture_sky.surfaceflags;
1427                         tx->basematerialflags |= MATERIALFLAG_SKY | MATERIALFLAG_NOSHADOW;
1428                 }
1429                 else
1430                 {
1431                         tx->supercontents = mod_q1bsp_texture_solid.supercontents;
1432                         tx->surfaceflags = mod_q1bsp_texture_solid.surfaceflags;
1433                         tx->basematerialflags |= MATERIALFLAG_WALL;
1434                 }
1435                 if (tx->skinframes[0].fog)
1436                         tx->basematerialflags |= MATERIALFLAG_ALPHA | MATERIALFLAG_BLENDED | MATERIALFLAG_TRANSPARENT | MATERIALFLAG_NOSHADOW;
1437
1438                 // start out with no animation
1439                 tx->currentframe = tx;
1440         }
1441
1442         // sequence the animations
1443         for (i = 0;i < m->nummiptex;i++)
1444         {
1445                 tx = loadmodel->data_textures + i;
1446                 if (!tx || tx->name[0] != '+' || tx->name[1] == 0 || tx->name[2] == 0)
1447                         continue;
1448                 if (tx->anim_total[0] || tx->anim_total[1])
1449                         continue;       // already sequenced
1450
1451                 // find the number of frames in the animation
1452                 memset(anims, 0, sizeof(anims));
1453                 memset(altanims, 0, sizeof(altanims));
1454
1455                 for (j = i;j < m->nummiptex;j++)
1456                 {
1457                         tx2 = loadmodel->data_textures + j;
1458                         if (!tx2 || tx2->name[0] != '+' || strcmp(tx2->name+2, tx->name+2))
1459                                 continue;
1460
1461                         num = tx2->name[1];
1462                         if (num >= '0' && num <= '9')
1463                                 anims[num - '0'] = tx2;
1464                         else if (num >= 'a' && num <= 'j')
1465                                 altanims[num - 'a'] = tx2;
1466                         else
1467                                 Con_Printf("Bad animating texture %s\n", tx->name);
1468                 }
1469
1470                 max = altmax = 0;
1471                 for (j = 0;j < 10;j++)
1472                 {
1473                         if (anims[j])
1474                                 max = j + 1;
1475                         if (altanims[j])
1476                                 altmax = j + 1;
1477                 }
1478                 //Con_Printf("linking animation %s (%i:%i frames)\n\n", tx->name, max, altmax);
1479
1480                 incomplete = false;
1481                 for (j = 0;j < max;j++)
1482                 {
1483                         if (!anims[j])
1484                         {
1485                                 Con_Printf("Missing frame %i of %s\n", j, tx->name);
1486                                 incomplete = true;
1487                         }
1488                 }
1489                 for (j = 0;j < altmax;j++)
1490                 {
1491                         if (!altanims[j])
1492                         {
1493                                 Con_Printf("Missing altframe %i of %s\n", j, tx->name);
1494                                 incomplete = true;
1495                         }
1496                 }
1497                 if (incomplete)
1498                         continue;
1499
1500                 if (altmax < 1)
1501                 {
1502                         // if there is no alternate animation, duplicate the primary
1503                         // animation into the alternate
1504                         altmax = max;
1505                         for (k = 0;k < 10;k++)
1506                                 altanims[k] = anims[k];
1507                 }
1508
1509                 // link together the primary animation
1510                 for (j = 0;j < max;j++)
1511                 {
1512                         tx2 = anims[j];
1513                         tx2->animated = true;
1514                         tx2->anim_total[0] = max;
1515                         tx2->anim_total[1] = altmax;
1516                         for (k = 0;k < 10;k++)
1517                         {
1518                                 tx2->anim_frames[0][k] = anims[k];
1519                                 tx2->anim_frames[1][k] = altanims[k];
1520                         }
1521                 }
1522
1523                 // if there really is an alternate anim...
1524                 if (anims[0] != altanims[0])
1525                 {
1526                         // link together the alternate animation
1527                         for (j = 0;j < altmax;j++)
1528                         {
1529                                 tx2 = altanims[j];
1530                                 tx2->animated = true;
1531                                 // the primary/alternate are reversed here
1532                                 tx2->anim_total[0] = altmax;
1533                                 tx2->anim_total[1] = max;
1534                                 for (k = 0;k < 10;k++)
1535                                 {
1536                                         tx2->anim_frames[0][k] = altanims[k];
1537                                         tx2->anim_frames[1][k] = anims[k];
1538                                 }
1539                         }
1540                 }
1541         }
1542 }
1543
1544 static void Mod_Q1BSP_LoadLighting(lump_t *l)
1545 {
1546         int i;
1547         unsigned char *in, *out, *data, d;
1548         char litfilename[MAX_QPATH];
1549         char dlitfilename[MAX_QPATH];
1550         fs_offset_t filesize;
1551         if (loadmodel->brush.ishlbsp) // LordHavoc: load the colored lighting data straight
1552         {
1553                 loadmodel->brushq1.lightdata = (unsigned char *)Mem_Alloc(loadmodel->mempool, l->filelen);
1554                 for (i=0; i<l->filelen; i++)
1555                         loadmodel->brushq1.lightdata[i] = mod_base[l->fileofs+i] >>= 1;
1556         }
1557         else if (loadmodel->brush.ismcbsp)
1558         {
1559                 loadmodel->brushq1.lightdata = (unsigned char *)Mem_Alloc(loadmodel->mempool, l->filelen);
1560                 memcpy(loadmodel->brushq1.lightdata, mod_base + l->fileofs, l->filelen);
1561         }
1562         else // LordHavoc: bsp version 29 (normal white lighting)
1563         {
1564                 // LordHavoc: hope is not lost yet, check for a .lit file to load
1565                 strlcpy (litfilename, loadmodel->name, sizeof (litfilename));
1566                 FS_StripExtension (litfilename, litfilename, sizeof (litfilename));
1567                 strlcpy (dlitfilename, litfilename, sizeof (dlitfilename));
1568                 strlcat (litfilename, ".lit", sizeof (litfilename));
1569                 strlcat (dlitfilename, ".dlit", sizeof (dlitfilename));
1570                 data = (unsigned char*) FS_LoadFile(litfilename, tempmempool, false, &filesize);
1571                 if (data)
1572                 {
1573                         if (filesize == (fs_offset_t)(8 + l->filelen * 3) && data[0] == 'Q' && data[1] == 'L' && data[2] == 'I' && data[3] == 'T')
1574                         {
1575                                 i = LittleLong(((int *)data)[1]);
1576                                 if (i == 1)
1577                                 {
1578                                         Con_DPrintf("loaded %s\n", litfilename);
1579                                         loadmodel->brushq1.lightdata = (unsigned char *)Mem_Alloc(loadmodel->mempool, filesize - 8);
1580                                         memcpy(loadmodel->brushq1.lightdata, data + 8, filesize - 8);
1581                                         Mem_Free(data);
1582                                         data = (unsigned char*) FS_LoadFile(dlitfilename, tempmempool, false, &filesize);
1583                                         if (data)
1584                                         {
1585                                                 if (filesize == (fs_offset_t)(8 + l->filelen * 3) && data[0] == 'Q' && data[1] == 'L' && data[2] == 'I' && data[3] == 'T')
1586                                                 {
1587                                                         i = LittleLong(((int *)data)[1]);
1588                                                         if (i == 1)
1589                                                         {
1590                                                                 Con_DPrintf("loaded %s\n", dlitfilename);
1591                                                                 loadmodel->brushq1.nmaplightdata = (unsigned char *)Mem_Alloc(loadmodel->mempool, filesize - 8);
1592                                                                 memcpy(loadmodel->brushq1.nmaplightdata, data + 8, filesize - 8);
1593                                                                 loadmodel->brushq3.deluxemapping_modelspace = false;
1594                                                                 loadmodel->brushq3.deluxemapping = true;
1595                                                         }
1596                                                 }
1597                                                 Mem_Free(data);
1598                                                 data = NULL;
1599                                         }
1600                                         return;
1601                                 }
1602                                 else
1603                                         Con_Printf("Unknown .lit file version (%d)\n", i);
1604                         }
1605                         else if (filesize == 8)
1606                                 Con_Print("Empty .lit file, ignoring\n");
1607                         else
1608                                 Con_Printf("Corrupt .lit file (file size %i bytes, should be %i bytes), ignoring\n", (int) filesize, (int) (8 + l->filelen * 3));
1609                         if (data)
1610                         {
1611                                 Mem_Free(data);
1612                                 data = NULL;
1613                         }
1614                 }
1615                 // LordHavoc: oh well, expand the white lighting data
1616                 if (!l->filelen)
1617                         return;
1618                 loadmodel->brushq1.lightdata = (unsigned char *)Mem_Alloc(loadmodel->mempool, l->filelen*3);
1619                 in = mod_base + l->fileofs;
1620                 out = loadmodel->brushq1.lightdata;
1621                 for (i = 0;i < l->filelen;i++)
1622                 {
1623                         d = *in++;
1624                         *out++ = d;
1625                         *out++ = d;
1626                         *out++ = d;
1627                 }
1628         }
1629 }
1630
1631 static void Mod_Q1BSP_LoadVisibility(lump_t *l)
1632 {
1633         loadmodel->brushq1.num_compressedpvs = 0;
1634         loadmodel->brushq1.data_compressedpvs = NULL;
1635         if (!l->filelen)
1636                 return;
1637         loadmodel->brushq1.num_compressedpvs = l->filelen;
1638         loadmodel->brushq1.data_compressedpvs = (unsigned char *)Mem_Alloc(loadmodel->mempool, l->filelen);
1639         memcpy(loadmodel->brushq1.data_compressedpvs, mod_base + l->fileofs, l->filelen);
1640 }
1641
1642 // used only for HalfLife maps
1643 static void Mod_Q1BSP_ParseWadsFromEntityLump(const char *data)
1644 {
1645         char key[128], value[4096];
1646         char wadname[128];
1647         int i, j, k;
1648         if (!data)
1649                 return;
1650         if (!COM_ParseTokenConsole(&data))
1651                 return; // error
1652         if (com_token[0] != '{')
1653                 return; // error
1654         while (1)
1655         {
1656                 if (!COM_ParseTokenConsole(&data))
1657                         return; // error
1658                 if (com_token[0] == '}')
1659                         break; // end of worldspawn
1660                 if (com_token[0] == '_')
1661                         strlcpy(key, com_token + 1, sizeof(key));
1662                 else
1663                         strlcpy(key, com_token, sizeof(key));
1664                 while (key[strlen(key)-1] == ' ') // remove trailing spaces
1665                         key[strlen(key)-1] = 0;
1666                 if (!COM_ParseTokenConsole(&data))
1667                         return; // error
1668                 dpsnprintf(value, sizeof(value), "%s", com_token);
1669                 if (!strcmp("wad", key)) // for HalfLife maps
1670                 {
1671                         if (loadmodel->brush.ishlbsp)
1672                         {
1673                                 j = 0;
1674                                 for (i = 0;i < (int)sizeof(value);i++)
1675                                         if (value[i] != ';' && value[i] != '\\' && value[i] != '/' && value[i] != ':')
1676                                                 break;
1677                                 if (value[i])
1678                                 {
1679                                         for (;i < (int)sizeof(value);i++)
1680                                         {
1681                                                 // ignore path - the \\ check is for HalfLife... stupid windoze 'programmers'...
1682                                                 if (value[i] == '\\' || value[i] == '/' || value[i] == ':')
1683                                                         j = i+1;
1684                                                 else if (value[i] == ';' || value[i] == 0)
1685                                                 {
1686                                                         k = value[i];
1687                                                         value[i] = 0;
1688                                                         strlcpy(wadname, "textures/", sizeof(wadname));
1689                                                         strlcat(wadname, &value[j], sizeof(wadname));
1690                                                         W_LoadTextureWadFile(wadname, false);
1691                                                         j = i+1;
1692                                                         if (!k)
1693                                                                 break;
1694                                                 }
1695                                         }
1696                                 }
1697                         }
1698                 }
1699         }
1700 }
1701
1702 static void Mod_Q1BSP_LoadEntities(lump_t *l)
1703 {
1704         loadmodel->brush.entities = NULL;
1705         if (!l->filelen)
1706                 return;
1707         loadmodel->brush.entities = (char *)Mem_Alloc(loadmodel->mempool, l->filelen);
1708         memcpy(loadmodel->brush.entities, mod_base + l->fileofs, l->filelen);
1709         if (loadmodel->brush.ishlbsp)
1710                 Mod_Q1BSP_ParseWadsFromEntityLump(loadmodel->brush.entities);
1711 }
1712
1713
1714 static void Mod_Q1BSP_LoadVertexes(lump_t *l)
1715 {
1716         dvertex_t       *in;
1717         mvertex_t       *out;
1718         int                     i, count;
1719
1720         in = (dvertex_t *)(mod_base + l->fileofs);
1721         if (l->filelen % sizeof(*in))
1722                 Host_Error("Mod_Q1BSP_LoadVertexes: funny lump size in %s",loadmodel->name);
1723         count = l->filelen / sizeof(*in);
1724         out = (mvertex_t *)Mem_Alloc(loadmodel->mempool, count*sizeof(*out));
1725
1726         loadmodel->brushq1.vertexes = out;
1727         loadmodel->brushq1.numvertexes = count;
1728
1729         for ( i=0 ; i<count ; i++, in++, out++)
1730         {
1731                 out->position[0] = LittleFloat(in->point[0]);
1732                 out->position[1] = LittleFloat(in->point[1]);
1733                 out->position[2] = LittleFloat(in->point[2]);
1734         }
1735 }
1736
1737 // The following two functions should be removed and MSG_* or SZ_* function sets adjusted so they
1738 // can be used for this
1739 // REMOVEME
1740 int SB_ReadInt (unsigned char **buffer)
1741 {
1742         int     i;
1743         i = ((*buffer)[0]) + 256*((*buffer)[1]) + 65536*((*buffer)[2]) + 16777216*((*buffer)[3]);
1744         (*buffer) += 4;
1745         return i;
1746 }
1747
1748 // REMOVEME
1749 float SB_ReadFloat (unsigned char **buffer)
1750 {
1751         union
1752         {
1753                 int             i;
1754                 float   f;
1755         } u;
1756
1757         u.i = SB_ReadInt (buffer);
1758         return u.f;
1759 }
1760
1761 static void Mod_Q1BSP_LoadSubmodels(lump_t *l, hullinfo_t *hullinfo)
1762 {
1763         unsigned char           *index;
1764         dmodel_t        *out;
1765         int                     i, j, count;
1766
1767         index = (unsigned char *)(mod_base + l->fileofs);
1768         if (l->filelen % (48+4*hullinfo->filehulls))
1769                 Host_Error ("Mod_Q1BSP_LoadSubmodels: funny lump size in %s", loadmodel->name);
1770
1771         count = l->filelen / (48+4*hullinfo->filehulls);
1772         out = (dmodel_t *)Mem_Alloc (loadmodel->mempool, count*sizeof(*out));
1773
1774         loadmodel->brushq1.submodels = out;
1775         loadmodel->brush.numsubmodels = count;
1776
1777         for (i = 0; i < count; i++, out++)
1778         {
1779         // spread out the mins / maxs by a pixel
1780                 out->mins[0] = SB_ReadFloat (&index) - 1;
1781                 out->mins[1] = SB_ReadFloat (&index) - 1;
1782                 out->mins[2] = SB_ReadFloat (&index) - 1;
1783                 out->maxs[0] = SB_ReadFloat (&index) + 1;
1784                 out->maxs[1] = SB_ReadFloat (&index) + 1;
1785                 out->maxs[2] = SB_ReadFloat (&index) + 1;
1786                 out->origin[0] = SB_ReadFloat (&index);
1787                 out->origin[1] = SB_ReadFloat (&index);
1788                 out->origin[2] = SB_ReadFloat (&index);
1789                 for (j = 0; j < hullinfo->filehulls; j++)
1790                         out->headnode[j] = SB_ReadInt (&index);
1791                 out->visleafs = SB_ReadInt (&index);
1792                 out->firstface = SB_ReadInt (&index);
1793                 out->numfaces = SB_ReadInt (&index);
1794         }
1795 }
1796
1797 static void Mod_Q1BSP_LoadEdges(lump_t *l)
1798 {
1799         dedge_t *in;
1800         medge_t *out;
1801         int     i, count;
1802
1803         in = (dedge_t *)(mod_base + l->fileofs);
1804         if (l->filelen % sizeof(*in))
1805                 Host_Error("Mod_Q1BSP_LoadEdges: funny lump size in %s",loadmodel->name);
1806         count = l->filelen / sizeof(*in);
1807         out = (medge_t *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
1808
1809         loadmodel->brushq1.edges = out;
1810         loadmodel->brushq1.numedges = count;
1811
1812         for ( i=0 ; i<count ; i++, in++, out++)
1813         {
1814                 out->v[0] = (unsigned short)LittleShort(in->v[0]);
1815                 out->v[1] = (unsigned short)LittleShort(in->v[1]);
1816                 if (out->v[0] >= loadmodel->brushq1.numvertexes || out->v[1] >= loadmodel->brushq1.numvertexes)
1817                 {
1818                         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);
1819                         out->v[0] = 0;
1820                         out->v[1] = 0;
1821                 }
1822         }
1823 }
1824
1825 static void Mod_Q1BSP_LoadTexinfo(lump_t *l)
1826 {
1827         texinfo_t *in;
1828         mtexinfo_t *out;
1829         int i, j, k, count, miptex;
1830
1831         in = (texinfo_t *)(mod_base + l->fileofs);
1832         if (l->filelen % sizeof(*in))
1833                 Host_Error("Mod_Q1BSP_LoadTexinfo: funny lump size in %s",loadmodel->name);
1834         count = l->filelen / sizeof(*in);
1835         out = (mtexinfo_t *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
1836
1837         loadmodel->brushq1.texinfo = out;
1838         loadmodel->brushq1.numtexinfo = count;
1839
1840         for (i = 0;i < count;i++, in++, out++)
1841         {
1842                 for (k = 0;k < 2;k++)
1843                         for (j = 0;j < 4;j++)
1844                                 out->vecs[k][j] = LittleFloat(in->vecs[k][j]);
1845
1846                 miptex = LittleLong(in->miptex);
1847                 out->flags = LittleLong(in->flags);
1848
1849                 out->texture = NULL;
1850                 if (loadmodel->data_textures)
1851                 {
1852                         if ((unsigned int) miptex >= (unsigned int) loadmodel->num_textures)
1853                                 Con_Printf("error in model \"%s\": invalid miptex index %i(of %i)\n", loadmodel->name, miptex, loadmodel->num_textures);
1854                         else
1855                                 out->texture = loadmodel->data_textures + miptex;
1856                 }
1857                 if (out->flags & TEX_SPECIAL)
1858                 {
1859                         // if texture chosen is NULL or the shader needs a lightmap,
1860                         // force to notexture water shader
1861                         if (out->texture == NULL || out->texture->basematerialflags & MATERIALFLAG_WALL)
1862                                 out->texture = loadmodel->data_textures + (loadmodel->num_textures - 1);
1863                 }
1864                 else
1865                 {
1866                         // if texture chosen is NULL, force to notexture
1867                         if (out->texture == NULL)
1868                                 out->texture = loadmodel->data_textures + (loadmodel->num_textures - 2);
1869                 }
1870         }
1871 }
1872
1873 #if 0
1874 void BoundPoly(int numverts, float *verts, vec3_t mins, vec3_t maxs)
1875 {
1876         int             i, j;
1877         float   *v;
1878
1879         mins[0] = mins[1] = mins[2] = 9999;
1880         maxs[0] = maxs[1] = maxs[2] = -9999;
1881         v = verts;
1882         for (i = 0;i < numverts;i++)
1883         {
1884                 for (j = 0;j < 3;j++, v++)
1885                 {
1886                         if (*v < mins[j])
1887                                 mins[j] = *v;
1888                         if (*v > maxs[j])
1889                                 maxs[j] = *v;
1890                 }
1891         }
1892 }
1893
1894 #define MAX_SUBDIVPOLYTRIANGLES 4096
1895 #define MAX_SUBDIVPOLYVERTS(MAX_SUBDIVPOLYTRIANGLES * 3)
1896
1897 static int subdivpolyverts, subdivpolytriangles;
1898 static int subdivpolyindex[MAX_SUBDIVPOLYTRIANGLES][3];
1899 static float subdivpolyvert[MAX_SUBDIVPOLYVERTS][3];
1900
1901 static int subdivpolylookupvert(vec3_t v)
1902 {
1903         int i;
1904         for (i = 0;i < subdivpolyverts;i++)
1905                 if (subdivpolyvert[i][0] == v[0]
1906                  && subdivpolyvert[i][1] == v[1]
1907                  && subdivpolyvert[i][2] == v[2])
1908                         return i;
1909         if (subdivpolyverts >= MAX_SUBDIVPOLYVERTS)
1910                 Host_Error("SubDividePolygon: ran out of vertices in buffer, please increase your r_subdivide_size");
1911         VectorCopy(v, subdivpolyvert[subdivpolyverts]);
1912         return subdivpolyverts++;
1913 }
1914
1915 static void SubdividePolygon(int numverts, float *verts)
1916 {
1917         int             i, i1, i2, i3, f, b, c, p;
1918         vec3_t  mins, maxs, front[256], back[256];
1919         float   m, *pv, *cv, dist[256], frac;
1920
1921         if (numverts > 250)
1922                 Host_Error("SubdividePolygon: ran out of verts in buffer");
1923
1924         BoundPoly(numverts, verts, mins, maxs);
1925
1926         for (i = 0;i < 3;i++)
1927         {
1928                 m = (mins[i] + maxs[i]) * 0.5;
1929                 m = r_subdivide_size.value * floor(m/r_subdivide_size.value + 0.5);
1930                 if (maxs[i] - m < 8)
1931                         continue;
1932                 if (m - mins[i] < 8)
1933                         continue;
1934
1935                 // cut it
1936                 for (cv = verts, c = 0;c < numverts;c++, cv += 3)
1937                         dist[c] = cv[i] - m;
1938
1939                 f = b = 0;
1940                 for (p = numverts - 1, c = 0, pv = verts + p * 3, cv = verts;c < numverts;p = c, c++, pv = cv, cv += 3)
1941                 {
1942                         if (dist[p] >= 0)
1943                         {
1944                                 VectorCopy(pv, front[f]);
1945                                 f++;
1946                         }
1947                         if (dist[p] <= 0)
1948                         {
1949                                 VectorCopy(pv, back[b]);
1950                                 b++;
1951                         }
1952                         if (dist[p] == 0 || dist[c] == 0)
1953                                 continue;
1954                         if ((dist[p] > 0) != (dist[c] > 0) )
1955                         {
1956                                 // clip point
1957                                 frac = dist[p] / (dist[p] - dist[c]);
1958                                 front[f][0] = back[b][0] = pv[0] + frac * (cv[0] - pv[0]);
1959                                 front[f][1] = back[b][1] = pv[1] + frac * (cv[1] - pv[1]);
1960                                 front[f][2] = back[b][2] = pv[2] + frac * (cv[2] - pv[2]);
1961                                 f++;
1962                                 b++;
1963                         }
1964                 }
1965
1966                 SubdividePolygon(f, front[0]);
1967                 SubdividePolygon(b, back[0]);
1968                 return;
1969         }
1970
1971         i1 = subdivpolylookupvert(verts);
1972         i2 = subdivpolylookupvert(verts + 3);
1973         for (i = 2;i < numverts;i++)
1974         {
1975                 if (subdivpolytriangles >= MAX_SUBDIVPOLYTRIANGLES)
1976                 {
1977                         Con_Print("SubdividePolygon: ran out of triangles in buffer, please increase your r_subdivide_size\n");
1978                         return;
1979                 }
1980
1981                 i3 = subdivpolylookupvert(verts + i * 3);
1982                 subdivpolyindex[subdivpolytriangles][0] = i1;
1983                 subdivpolyindex[subdivpolytriangles][1] = i2;
1984                 subdivpolyindex[subdivpolytriangles][2] = i3;
1985                 i2 = i3;
1986                 subdivpolytriangles++;
1987         }
1988 }
1989
1990 //Breaks a polygon up along axial 64 unit
1991 //boundaries so that turbulent and sky warps
1992 //can be done reasonably.
1993 static void Mod_Q1BSP_GenerateWarpMesh(msurface_t *surface)
1994 {
1995         int i, j;
1996         surfvertex_t *v;
1997         surfmesh_t *mesh;
1998
1999         subdivpolytriangles = 0;
2000         subdivpolyverts = 0;
2001         SubdividePolygon(surface->num_vertices, (surface->mesh->data_vertex3f + 3 * surface->num_firstvertex));
2002         if (subdivpolytriangles < 1)
2003                 Host_Error("Mod_Q1BSP_GenerateWarpMesh: no triangles?");
2004
2005         surface->mesh = mesh = Mem_Alloc(loadmodel->mempool, sizeof(surfmesh_t) + subdivpolytriangles * sizeof(int[3]) + subdivpolyverts * sizeof(surfvertex_t));
2006         mesh->num_vertices = subdivpolyverts;
2007         mesh->num_triangles = subdivpolytriangles;
2008         mesh->vertex = (surfvertex_t *)(mesh + 1);
2009         mesh->index = (int *)(mesh->vertex + mesh->num_vertices);
2010         memset(mesh->vertex, 0, mesh->num_vertices * sizeof(surfvertex_t));
2011
2012         for (i = 0;i < mesh->num_triangles;i++)
2013                 for (j = 0;j < 3;j++)
2014                         mesh->index[i*3+j] = subdivpolyindex[i][j];
2015
2016         for (i = 0, v = mesh->vertex;i < subdivpolyverts;i++, v++)
2017         {
2018                 VectorCopy(subdivpolyvert[i], v->v);
2019                 v->st[0] = DotProduct(v->v, surface->lightmapinfo->texinfo->vecs[0]);
2020                 v->st[1] = DotProduct(v->v, surface->lightmapinfo->texinfo->vecs[1]);
2021         }
2022 }
2023 #endif
2024
2025 static qboolean Mod_Q1BSP_AllocLightmapBlock(int *lineused, int totalwidth, int totalheight, int blockwidth, int blockheight, int *outx, int *outy)
2026 {
2027         int y, x2, y2;
2028         int bestx = totalwidth, besty = 0;
2029         // find the left-most space we can find
2030         for (y = 0;y <= totalheight - blockheight;y++)
2031         {
2032                 x2 = 0;
2033                 for (y2 = 0;y2 < blockheight;y2++)
2034                         x2 = max(x2, lineused[y+y2]);
2035                 if (bestx > x2)
2036                 {
2037                         bestx = x2;
2038                         besty = y;
2039                 }
2040         }
2041         // if the best was not good enough, return failure
2042         if (bestx > totalwidth - blockwidth)
2043                 return false;
2044         // we found a good spot
2045         if (outx)
2046                 *outx = bestx;
2047         if (outy)
2048                 *outy = besty;
2049         // now mark the space used
2050         for (y2 = 0;y2 < blockheight;y2++)
2051                 lineused[besty+y2] = bestx + blockwidth;
2052         // return success
2053         return true;
2054 }
2055
2056 static void Mod_Q1BSP_LoadFaces(lump_t *l)
2057 {
2058         dface_t *in;
2059         msurface_t *surface;
2060         int i, j, count, surfacenum, planenum, smax, tmax, ssize, tsize, firstedge, numedges, totalverts, totaltris, lightmapnumber;
2061         float texmins[2], texmaxs[2], val, lightmaptexcoordscale;
2062 #define LIGHTMAPSIZE 256
2063         rtexture_t *lightmaptexture, *deluxemaptexture;
2064         int lightmap_lineused[LIGHTMAPSIZE];
2065
2066         in = (dface_t *)(mod_base + l->fileofs);
2067         if (l->filelen % sizeof(*in))
2068                 Host_Error("Mod_Q1BSP_LoadFaces: funny lump size in %s",loadmodel->name);
2069         count = l->filelen / sizeof(*in);
2070         loadmodel->data_surfaces = (msurface_t *)Mem_Alloc(loadmodel->mempool, count*sizeof(msurface_t));
2071         loadmodel->data_surfaces_lightmapinfo = (msurface_lightmapinfo_t *)Mem_Alloc(loadmodel->mempool, count*sizeof(msurface_lightmapinfo_t));
2072
2073         loadmodel->num_surfaces = count;
2074
2075         totalverts = 0;
2076         totaltris = 0;
2077         for (surfacenum = 0, in = (dface_t *)(mod_base + l->fileofs);surfacenum < count;surfacenum++, in++)
2078         {
2079                 numedges = LittleShort(in->numedges);
2080                 totalverts += numedges;
2081                 totaltris += numedges - 2;
2082         }
2083
2084         Mod_AllocSurfMesh(loadmodel->mempool, totalverts, totaltris, true, false, false);
2085
2086         lightmaptexture = NULL;
2087         deluxemaptexture = r_texture_blanknormalmap;
2088         lightmapnumber = 1;
2089         lightmaptexcoordscale = 1.0f / (float)LIGHTMAPSIZE;
2090
2091         totalverts = 0;
2092         totaltris = 0;
2093         for (surfacenum = 0, in = (dface_t *)(mod_base + l->fileofs), surface = loadmodel->data_surfaces;surfacenum < count;surfacenum++, in++, surface++)
2094         {
2095                 surface->lightmapinfo = loadmodel->data_surfaces_lightmapinfo + surfacenum;
2096
2097                 // FIXME: validate edges, texinfo, etc?
2098                 firstedge = LittleLong(in->firstedge);
2099                 numedges = LittleShort(in->numedges);
2100                 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)
2101                         Host_Error("Mod_Q1BSP_LoadFaces: invalid edge range (firstedge %i, numedges %i, model edges %i)", firstedge, numedges, loadmodel->brushq1.numsurfedges);
2102                 i = LittleShort(in->texinfo);
2103                 if ((unsigned int) i >= (unsigned int) loadmodel->brushq1.numtexinfo)
2104                         Host_Error("Mod_Q1BSP_LoadFaces: invalid texinfo index %i(model has %i texinfos)", i, loadmodel->brushq1.numtexinfo);
2105                 surface->lightmapinfo->texinfo = loadmodel->brushq1.texinfo + i;
2106                 surface->texture = surface->lightmapinfo->texinfo->texture;
2107
2108                 planenum = LittleShort(in->planenum);
2109                 if ((unsigned int) planenum >= (unsigned int) loadmodel->brush.num_planes)
2110                         Host_Error("Mod_Q1BSP_LoadFaces: invalid plane index %i (model has %i planes)", planenum, loadmodel->brush.num_planes);
2111
2112                 //surface->flags = surface->texture->flags;
2113                 //if (LittleShort(in->side))
2114                 //      surface->flags |= SURF_PLANEBACK;
2115                 //surface->plane = loadmodel->brush.data_planes + planenum;
2116
2117                 surface->num_firstvertex = totalverts;
2118                 surface->num_vertices = numedges;
2119                 surface->num_firsttriangle = totaltris;
2120                 surface->num_triangles = numedges - 2;
2121                 totalverts += numedges;
2122                 totaltris += numedges - 2;
2123
2124                 // convert edges back to a normal polygon
2125                 for (i = 0;i < surface->num_vertices;i++)
2126                 {
2127                         int lindex = loadmodel->brushq1.surfedges[firstedge + i];
2128                         float s, t;
2129                         if (lindex > 0)
2130                                 VectorCopy(loadmodel->brushq1.vertexes[loadmodel->brushq1.edges[lindex].v[0]].position, (loadmodel->surfmesh.data_vertex3f + 3 * surface->num_firstvertex) + i * 3);
2131                         else
2132                                 VectorCopy(loadmodel->brushq1.vertexes[loadmodel->brushq1.edges[-lindex].v[1]].position, (loadmodel->surfmesh.data_vertex3f + 3 * surface->num_firstvertex) + i * 3);
2133                         s = DotProduct(((loadmodel->surfmesh.data_vertex3f + 3 * surface->num_firstvertex) + i * 3), surface->lightmapinfo->texinfo->vecs[0]) + surface->lightmapinfo->texinfo->vecs[0][3];
2134                         t = DotProduct(((loadmodel->surfmesh.data_vertex3f + 3 * surface->num_firstvertex) + i * 3), surface->lightmapinfo->texinfo->vecs[1]) + surface->lightmapinfo->texinfo->vecs[1][3];
2135                         (loadmodel->surfmesh.data_texcoordtexture2f + 2 * surface->num_firstvertex)[i * 2 + 0] = s / surface->texture->width;
2136                         (loadmodel->surfmesh.data_texcoordtexture2f + 2 * surface->num_firstvertex)[i * 2 + 1] = t / surface->texture->height;
2137                         (loadmodel->surfmesh.data_texcoordlightmap2f + 2 * surface->num_firstvertex)[i * 2 + 0] = 0;
2138                         (loadmodel->surfmesh.data_texcoordlightmap2f + 2 * surface->num_firstvertex)[i * 2 + 1] = 0;
2139                         (loadmodel->surfmesh.data_lightmapoffsets + surface->num_firstvertex)[i] = 0;
2140                 }
2141
2142                 for (i = 0;i < surface->num_triangles;i++)
2143                 {
2144                         (loadmodel->surfmesh.data_element3i + 3 * surface->num_firsttriangle)[i * 3 + 0] = 0 + surface->num_firstvertex;
2145                         (loadmodel->surfmesh.data_element3i + 3 * surface->num_firsttriangle)[i * 3 + 1] = i + 1 + surface->num_firstvertex;
2146                         (loadmodel->surfmesh.data_element3i + 3 * surface->num_firsttriangle)[i * 3 + 2] = i + 2 + surface->num_firstvertex;
2147                 }
2148
2149                 // compile additional data about the surface geometry
2150                 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);
2151                 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);
2152                 BoxFromPoints(surface->mins, surface->maxs, surface->num_vertices, (loadmodel->surfmesh.data_vertex3f + 3 * surface->num_firstvertex));
2153
2154                 // generate surface extents information
2155                 texmins[0] = texmaxs[0] = DotProduct((loadmodel->surfmesh.data_vertex3f + 3 * surface->num_firstvertex), surface->lightmapinfo->texinfo->vecs[0]) + surface->lightmapinfo->texinfo->vecs[0][3];
2156                 texmins[1] = texmaxs[1] = DotProduct((loadmodel->surfmesh.data_vertex3f + 3 * surface->num_firstvertex), surface->lightmapinfo->texinfo->vecs[1]) + surface->lightmapinfo->texinfo->vecs[1][3];
2157                 for (i = 1;i < surface->num_vertices;i++)
2158                 {
2159                         for (j = 0;j < 2;j++)
2160                         {
2161                                 val = DotProduct((loadmodel->surfmesh.data_vertex3f + 3 * surface->num_firstvertex) + i * 3, surface->lightmapinfo->texinfo->vecs[j]) + surface->lightmapinfo->texinfo->vecs[j][3];
2162                                 texmins[j] = min(texmins[j], val);
2163                                 texmaxs[j] = max(texmaxs[j], val);
2164                         }
2165                 }
2166                 for (i = 0;i < 2;i++)
2167                 {
2168                         surface->lightmapinfo->texturemins[i] = (int) floor(texmins[i] / 16.0) * 16;
2169                         surface->lightmapinfo->extents[i] = (int) ceil(texmaxs[i] / 16.0) * 16 - surface->lightmapinfo->texturemins[i];
2170                 }
2171
2172                 smax = surface->lightmapinfo->extents[0] >> 4;
2173                 tmax = surface->lightmapinfo->extents[1] >> 4;
2174                 ssize = (surface->lightmapinfo->extents[0] >> 4) + 1;
2175                 tsize = (surface->lightmapinfo->extents[1] >> 4) + 1;
2176
2177                 // lighting info
2178                 for (i = 0;i < MAXLIGHTMAPS;i++)
2179                         surface->lightmapinfo->styles[i] = in->styles[i];
2180                 surface->lightmaptexture = NULL;
2181                 surface->deluxemaptexture = r_texture_blanknormalmap;
2182                 i = LittleLong(in->lightofs);
2183                 if (i == -1)
2184                 {
2185                         surface->lightmapinfo->samples = NULL;
2186                         // give non-lightmapped water a 1x white lightmap
2187                         if ((surface->texture->basematerialflags & MATERIALFLAG_WATER) && (surface->lightmapinfo->texinfo->flags & TEX_SPECIAL) && ssize <= 256 && tsize <= 256)
2188                         {
2189                                 surface->lightmapinfo->samples = (unsigned char *)Mem_Alloc(loadmodel->mempool, ssize * tsize * 3);
2190                                 surface->lightmapinfo->styles[0] = 0;
2191                                 memset(surface->lightmapinfo->samples, 128, ssize * tsize * 3);
2192                         }
2193                 }
2194                 else if (loadmodel->brush.ishlbsp) // LordHavoc: HalfLife map (bsp version 30)
2195                         surface->lightmapinfo->samples = loadmodel->brushq1.lightdata + i;
2196                 else // LordHavoc: white lighting (bsp version 29)
2197                 {
2198                         surface->lightmapinfo->samples = loadmodel->brushq1.lightdata + (i * 3);
2199                         if (loadmodel->brushq1.nmaplightdata)
2200                                 surface->lightmapinfo->nmapsamples = loadmodel->brushq1.nmaplightdata + (i * 3);
2201                 }
2202
2203                 // check if we should apply a lightmap to this
2204                 if (!(surface->lightmapinfo->texinfo->flags & TEX_SPECIAL) || surface->lightmapinfo->samples)
2205                 {
2206                         int i, iu, iv, lightmapx, lightmapy;
2207                         float u, v, ubase, vbase, uscale, vscale;
2208
2209                         if (ssize > 256 || tsize > 256)
2210                                 Host_Error("Bad surface extents");
2211                         // force lightmap upload on first time seeing the surface
2212                         surface->cached_dlight = true;
2213                         // stainmap for permanent marks on walls
2214                         surface->lightmapinfo->stainsamples = (unsigned char *)Mem_Alloc(loadmodel->mempool, ssize * tsize * 3);
2215                         // clear to white
2216                         memset(surface->lightmapinfo->stainsamples, 255, ssize * tsize * 3);
2217
2218                         // find a place for this lightmap
2219                         if (!lightmaptexture || !Mod_Q1BSP_AllocLightmapBlock(lightmap_lineused, LIGHTMAPSIZE, LIGHTMAPSIZE, ssize, tsize, &lightmapx, &lightmapy))
2220                         {
2221                                 // could not find room, make a new lightmap
2222                                 lightmaptexture = R_LoadTexture2D(loadmodel->texturepool, va("lightmap%i", lightmapnumber), LIGHTMAPSIZE, LIGHTMAPSIZE, NULL, loadmodel->brushq1.lightmaprgba ? TEXTYPE_RGBA : TEXTYPE_RGB, TEXF_FORCELINEAR | TEXF_PRECACHE, NULL);
2223                                 if (loadmodel->brushq1.nmaplightdata)
2224                                         deluxemaptexture = R_LoadTexture2D(loadmodel->texturepool, va("deluxemap%i", lightmapnumber), LIGHTMAPSIZE, LIGHTMAPSIZE, NULL, loadmodel->brushq1.lightmaprgba ? TEXTYPE_RGBA : TEXTYPE_RGB, TEXF_FORCELINEAR | TEXF_PRECACHE, NULL);
2225                                 lightmapnumber++;
2226                                 memset(lightmap_lineused, 0, sizeof(lightmap_lineused));
2227                                 Mod_Q1BSP_AllocLightmapBlock(lightmap_lineused, LIGHTMAPSIZE, LIGHTMAPSIZE, ssize, tsize, &lightmapx, &lightmapy);
2228                         }
2229
2230                         surface->lightmaptexture = lightmaptexture;
2231                         surface->deluxemaptexture = deluxemaptexture;
2232                         surface->lightmapinfo->lightmaporigin[0] = lightmapx;
2233                         surface->lightmapinfo->lightmaporigin[1] = lightmapy;
2234
2235                         ubase = lightmapx * lightmaptexcoordscale;
2236                         vbase = lightmapy * lightmaptexcoordscale;
2237                         uscale = lightmaptexcoordscale;
2238                         vscale = lightmaptexcoordscale;
2239
2240                         for (i = 0;i < surface->num_vertices;i++)
2241                         {
2242                                 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);
2243                                 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);
2244                                 (loadmodel->surfmesh.data_texcoordlightmap2f + 2 * surface->num_firstvertex)[i * 2 + 0] = u * uscale + ubase;
2245                                 (loadmodel->surfmesh.data_texcoordlightmap2f + 2 * surface->num_firstvertex)[i * 2 + 1] = v * vscale + vbase;
2246                                 // LordHavoc: calc lightmap data offset for vertex lighting to use
2247                                 iu = (int) u;
2248                                 iv = (int) v;
2249                                 (loadmodel->surfmesh.data_lightmapoffsets + surface->num_firstvertex)[i] = (bound(0, iv, tmax) * ssize + bound(0, iu, smax)) * 3;
2250                         }
2251                 }
2252         }
2253 }
2254
2255 static void Mod_Q1BSP_LoadNodes_RecursiveSetParent(mnode_t *node, mnode_t *parent)
2256 {
2257         //if (node->parent)
2258         //      Host_Error("Mod_Q1BSP_LoadNodes_RecursiveSetParent: runaway recursion");
2259         node->parent = parent;
2260         if (node->plane)
2261         {
2262                 Mod_Q1BSP_LoadNodes_RecursiveSetParent(node->children[0], node);
2263                 Mod_Q1BSP_LoadNodes_RecursiveSetParent(node->children[1], node);
2264         }
2265 }
2266
2267 static void Mod_Q1BSP_LoadNodes(lump_t *l)
2268 {
2269         int                     i, j, count, p;
2270         dnode_t         *in;
2271         mnode_t         *out;
2272
2273         in = (dnode_t *)(mod_base + l->fileofs);
2274         if (l->filelen % sizeof(*in))
2275                 Host_Error("Mod_Q1BSP_LoadNodes: funny lump size in %s",loadmodel->name);
2276         count = l->filelen / sizeof(*in);
2277         out = (mnode_t *)Mem_Alloc(loadmodel->mempool, count*sizeof(*out));
2278
2279         loadmodel->brush.data_nodes = out;
2280         loadmodel->brush.num_nodes = count;
2281
2282         for ( i=0 ; i<count ; i++, in++, out++)
2283         {
2284                 for (j=0 ; j<3 ; j++)
2285                 {
2286                         out->mins[j] = LittleShort(in->mins[j]);
2287                         out->maxs[j] = LittleShort(in->maxs[j]);
2288                 }
2289
2290                 p = LittleLong(in->planenum);
2291                 out->plane = loadmodel->brush.data_planes + p;
2292
2293                 out->firstsurface = LittleShort(in->firstface);
2294                 out->numsurfaces = LittleShort(in->numfaces);
2295
2296                 for (j=0 ; j<2 ; j++)
2297                 {
2298                         p = LittleShort(in->children[j]);
2299                         if (p >= 0)
2300                                 out->children[j] = loadmodel->brush.data_nodes + p;
2301                         else
2302                                 out->children[j] = (mnode_t *)(loadmodel->brush.data_leafs + (-1 - p));
2303                 }
2304         }
2305
2306         Mod_Q1BSP_LoadNodes_RecursiveSetParent(loadmodel->brush.data_nodes, NULL);      // sets nodes and leafs
2307 }
2308
2309 static void Mod_Q1BSP_LoadLeafs(lump_t *l)
2310 {
2311         dleaf_t *in;
2312         mleaf_t *out;
2313         int i, j, count, p;
2314
2315         in = (dleaf_t *)(mod_base + l->fileofs);
2316         if (l->filelen % sizeof(*in))
2317                 Host_Error("Mod_Q1BSP_LoadLeafs: funny lump size in %s",loadmodel->name);
2318         count = l->filelen / sizeof(*in);
2319         out = (mleaf_t *)Mem_Alloc(loadmodel->mempool, count*sizeof(*out));
2320
2321         loadmodel->brush.data_leafs = out;
2322         loadmodel->brush.num_leafs = count;
2323         // get visleafs from the submodel data
2324         loadmodel->brush.num_pvsclusters = loadmodel->brushq1.submodels[0].visleafs;
2325         loadmodel->brush.num_pvsclusterbytes = (loadmodel->brush.num_pvsclusters+7)>>3;
2326         loadmodel->brush.data_pvsclusters = (unsigned char *)Mem_Alloc(loadmodel->mempool, loadmodel->brush.num_pvsclusters * loadmodel->brush.num_pvsclusterbytes);
2327         memset(loadmodel->brush.data_pvsclusters, 0xFF, loadmodel->brush.num_pvsclusters * loadmodel->brush.num_pvsclusterbytes);
2328
2329         for ( i=0 ; i<count ; i++, in++, out++)
2330         {
2331                 for (j=0 ; j<3 ; j++)
2332                 {
2333                         out->mins[j] = LittleShort(in->mins[j]);
2334                         out->maxs[j] = LittleShort(in->maxs[j]);
2335                 }
2336
2337                 // FIXME: this function could really benefit from some error checking
2338
2339                 out->contents = LittleLong(in->contents);
2340
2341                 out->firstleafsurface = loadmodel->brush.data_leafsurfaces + LittleShort(in->firstmarksurface);
2342                 out->numleafsurfaces = LittleShort(in->nummarksurfaces);
2343                 if (out->firstleafsurface < 0 || LittleShort(in->firstmarksurface) + out->numleafsurfaces > loadmodel->brush.num_leafsurfaces)
2344                 {
2345                         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);
2346                         out->firstleafsurface = NULL;
2347                         out->numleafsurfaces = 0;
2348                 }
2349
2350                 out->clusterindex = i - 1;
2351                 if (out->clusterindex >= loadmodel->brush.num_pvsclusters)
2352                         out->clusterindex = -1;
2353
2354                 p = LittleLong(in->visofs);
2355                 // ignore visofs errors on leaf 0 (solid)
2356                 if (p >= 0 && out->clusterindex >= 0)
2357                 {
2358                         if (p >= loadmodel->brushq1.num_compressedpvs)
2359                                 Con_Print("Mod_Q1BSP_LoadLeafs: invalid visofs\n");
2360                         else
2361                                 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);
2362                 }
2363
2364                 for (j = 0;j < 4;j++)
2365                         out->ambient_sound_level[j] = in->ambient_level[j];
2366
2367                 // FIXME: Insert caustics here
2368         }
2369 }
2370
2371 qboolean Mod_Q1BSP_CheckWaterAlphaSupport(void)
2372 {
2373         int i, j;
2374         mleaf_t *leaf;
2375         const unsigned char *pvs;
2376         // check all liquid leafs to see if they can see into empty leafs, if any
2377         // can we can assume this map supports r_wateralpha
2378         for (i = 0, leaf = loadmodel->brush.data_leafs;i < loadmodel->brush.num_leafs;i++, leaf++)
2379         {
2380                 if ((leaf->contents == CONTENTS_WATER || leaf->contents == CONTENTS_SLIME) && (leaf->clusterindex >= 0 && loadmodel->brush.data_pvsclusters))
2381                 {
2382                         pvs = loadmodel->brush.data_pvsclusters + leaf->clusterindex * loadmodel->brush.num_pvsclusterbytes;
2383                         for (j = 0;j < loadmodel->brush.num_leafs;j++)
2384                                 if (leaf->contents == CONTENTS_EMPTY && CHECKPVSBIT(pvs, loadmodel->brush.data_leafs[j].clusterindex))
2385                                         return true;
2386                 }
2387         }
2388         return false;
2389 }
2390
2391 static void Mod_Q1BSP_LoadClipnodes(lump_t *l, hullinfo_t *hullinfo)
2392 {
2393         dclipnode_t *in, *out;
2394         int                     i, count;
2395         hull_t          *hull;
2396
2397         in = (dclipnode_t *)(mod_base + l->fileofs);
2398         if (l->filelen % sizeof(*in))
2399                 Host_Error("Mod_Q1BSP_LoadClipnodes: funny lump size in %s",loadmodel->name);
2400         count = l->filelen / sizeof(*in);
2401         out = (dclipnode_t *)Mem_Alloc(loadmodel->mempool, count*sizeof(*out));
2402
2403         loadmodel->brushq1.clipnodes = out;
2404         loadmodel->brushq1.numclipnodes = count;
2405
2406         for (i = 1; i < hullinfo->numhulls; i++)
2407         {
2408                 hull = &loadmodel->brushq1.hulls[i];
2409                 hull->clipnodes = out;
2410                 hull->firstclipnode = 0;
2411                 hull->lastclipnode = count-1;
2412                 hull->planes = loadmodel->brush.data_planes;
2413                 hull->clip_mins[0] = hullinfo->hullsizes[i][0][0];
2414                 hull->clip_mins[1] = hullinfo->hullsizes[i][0][1];
2415                 hull->clip_mins[2] = hullinfo->hullsizes[i][0][2];
2416                 hull->clip_maxs[0] = hullinfo->hullsizes[i][1][0];
2417                 hull->clip_maxs[1] = hullinfo->hullsizes[i][1][1];
2418                 hull->clip_maxs[2] = hullinfo->hullsizes[i][1][2];
2419                 VectorSubtract(hull->clip_maxs, hull->clip_mins, hull->clip_size);
2420         }
2421
2422         for (i=0 ; i<count ; i++, out++, in++)
2423         {
2424                 out->planenum = LittleLong(in->planenum);
2425                 out->children[0] = LittleShort(in->children[0]);
2426                 out->children[1] = LittleShort(in->children[1]);
2427                 if (out->planenum < 0 || out->planenum >= loadmodel->brush.num_planes)
2428                         Host_Error("Corrupt clipping hull(out of range planenum)");
2429                 if (out->children[0] >= count || out->children[1] >= count)
2430                         Host_Error("Corrupt clipping hull(out of range child)");
2431         }
2432 }
2433
2434 //Duplicate the drawing hull structure as a clipping hull
2435 static void Mod_Q1BSP_MakeHull0(void)
2436 {
2437         mnode_t         *in;
2438         dclipnode_t *out;
2439         int                     i;
2440         hull_t          *hull;
2441
2442         hull = &loadmodel->brushq1.hulls[0];
2443
2444         in = loadmodel->brush.data_nodes;
2445         out = (dclipnode_t *)Mem_Alloc(loadmodel->mempool, loadmodel->brush.num_nodes * sizeof(dclipnode_t));
2446
2447         hull->clipnodes = out;
2448         hull->firstclipnode = 0;
2449         hull->lastclipnode = loadmodel->brush.num_nodes - 1;
2450         hull->planes = loadmodel->brush.data_planes;
2451
2452         for (i = 0;i < loadmodel->brush.num_nodes;i++, out++, in++)
2453         {
2454                 out->planenum = in->plane - loadmodel->brush.data_planes;
2455                 out->children[0] = in->children[0]->plane ? in->children[0] - loadmodel->brush.data_nodes : ((mleaf_t *)in->children[0])->contents;
2456                 out->children[1] = in->children[1]->plane ? in->children[1] - loadmodel->brush.data_nodes : ((mleaf_t *)in->children[1])->contents;
2457         }
2458 }
2459
2460 static void Mod_Q1BSP_LoadLeaffaces(lump_t *l)
2461 {
2462         int i, j;
2463         short *in;
2464
2465         in = (short *)(mod_base + l->fileofs);
2466         if (l->filelen % sizeof(*in))
2467                 Host_Error("Mod_Q1BSP_LoadLeaffaces: funny lump size in %s",loadmodel->name);
2468         loadmodel->brush.num_leafsurfaces = l->filelen / sizeof(*in);
2469         loadmodel->brush.data_leafsurfaces = (int *)Mem_Alloc(loadmodel->mempool, loadmodel->brush.num_leafsurfaces * sizeof(int));
2470
2471         for (i = 0;i < loadmodel->brush.num_leafsurfaces;i++)
2472         {
2473                 j = (unsigned) LittleShort(in[i]);
2474                 if (j >= loadmodel->num_surfaces)
2475                         Host_Error("Mod_Q1BSP_LoadLeaffaces: bad surface number");
2476                 loadmodel->brush.data_leafsurfaces[i] = j;
2477         }
2478 }
2479
2480 static void Mod_Q1BSP_LoadSurfedges(lump_t *l)
2481 {
2482         int             i;
2483         int             *in;
2484
2485         in = (int *)(mod_base + l->fileofs);
2486         if (l->filelen % sizeof(*in))
2487                 Host_Error("Mod_Q1BSP_LoadSurfedges: funny lump size in %s",loadmodel->name);
2488         loadmodel->brushq1.numsurfedges = l->filelen / sizeof(*in);
2489         loadmodel->brushq1.surfedges = (int *)Mem_Alloc(loadmodel->mempool, loadmodel->brushq1.numsurfedges * sizeof(int));
2490
2491         for (i = 0;i < loadmodel->brushq1.numsurfedges;i++)
2492                 loadmodel->brushq1.surfedges[i] = LittleLong(in[i]);
2493 }
2494
2495
2496 static void Mod_Q1BSP_LoadPlanes(lump_t *l)
2497 {
2498         int                     i;
2499         mplane_t        *out;
2500         dplane_t        *in;
2501
2502         in = (dplane_t *)(mod_base + l->fileofs);
2503         if (l->filelen % sizeof(*in))
2504                 Host_Error("Mod_Q1BSP_LoadPlanes: funny lump size in %s", loadmodel->name);
2505
2506         loadmodel->brush.num_planes = l->filelen / sizeof(*in);
2507         loadmodel->brush.data_planes = out = (mplane_t *)Mem_Alloc(loadmodel->mempool, loadmodel->brush.num_planes * sizeof(*out));
2508
2509         for (i = 0;i < loadmodel->brush.num_planes;i++, in++, out++)
2510         {
2511                 out->normal[0] = LittleFloat(in->normal[0]);
2512                 out->normal[1] = LittleFloat(in->normal[1]);
2513                 out->normal[2] = LittleFloat(in->normal[2]);
2514                 out->dist = LittleFloat(in->dist);
2515
2516                 PlaneClassify(out);
2517         }
2518 }
2519
2520 static void Mod_Q1BSP_LoadMapBrushes(void)
2521 {
2522 #if 0
2523 // unfinished
2524         int submodel, numbrushes;
2525         qboolean firstbrush;
2526         char *text, *maptext;
2527         char mapfilename[MAX_QPATH];
2528         FS_StripExtension (loadmodel->name, mapfilename, sizeof (mapfilename));
2529         strlcat (mapfilename, ".map", sizeof (mapfilename));
2530         maptext = (unsigned char*) FS_LoadFile(mapfilename, tempmempool, false, NULL);
2531         if (!maptext)
2532                 return;
2533         text = maptext;
2534         if (!COM_ParseTokenConsole(&data))
2535                 return; // error
2536         submodel = 0;
2537         for (;;)
2538         {
2539                 if (!COM_ParseTokenConsole(&data))
2540                         break;
2541                 if (com_token[0] != '{')
2542                         return; // error
2543                 // entity
2544                 firstbrush = true;
2545                 numbrushes = 0;
2546                 maxbrushes = 256;
2547                 brushes = Mem_Alloc(loadmodel->mempool, maxbrushes * sizeof(mbrush_t));
2548                 for (;;)
2549                 {
2550                         if (!COM_ParseTokenConsole(&data))
2551                                 return; // error
2552                         if (com_token[0] == '}')
2553                                 break; // end of entity
2554                         if (com_token[0] == '{')
2555                         {
2556                                 // brush
2557                                 if (firstbrush)
2558                                 {
2559                                         if (submodel)
2560                                         {
2561                                                 if (submodel > loadmodel->brush.numsubmodels)
2562                                                 {
2563                                                         Con_Printf("Mod_Q1BSP_LoadMapBrushes: .map has more submodels than .bsp!\n");
2564                                                         model = NULL;
2565                                                 }
2566                                                 else
2567                                                         model = loadmodel->brush.submodels[submodel];
2568                                         }
2569                                         else
2570                                                 model = loadmodel;
2571                                 }
2572                                 for (;;)
2573                                 {
2574                                         if (!COM_ParseTokenConsole(&data))
2575                                                 return; // error
2576                                         if (com_token[0] == '}')
2577                                                 break; // end of brush
2578                                         // each brush face should be this format:
2579                                         // ( x y z ) ( x y z ) ( x y z ) texture scroll_s scroll_t rotateangle scale_s scale_t
2580                                         // FIXME: support hl .map format
2581                                         for (pointnum = 0;pointnum < 3;pointnum++)
2582                                         {
2583                                                 COM_ParseTokenConsole(&data);
2584                                                 for (componentnum = 0;componentnum < 3;componentnum++)
2585                                                 {
2586                                                         COM_ParseTokenConsole(&data);
2587                                                         point[pointnum][componentnum] = atof(com_token);
2588                                                 }
2589                                                 COM_ParseTokenConsole(&data);
2590                                         }
2591                                         COM_ParseTokenConsole(&data);
2592                                         strlcpy(facetexture, com_token, sizeof(facetexture));
2593                                         COM_ParseTokenConsole(&data);
2594                                         //scroll_s = atof(com_token);
2595                                         COM_ParseTokenConsole(&data);
2596                                         //scroll_t = atof(com_token);
2597                                         COM_ParseTokenConsole(&data);
2598                                         //rotate = atof(com_token);
2599                                         COM_ParseTokenConsole(&data);
2600                                         //scale_s = atof(com_token);
2601                                         COM_ParseTokenConsole(&data);
2602                                         //scale_t = atof(com_token);
2603                                         TriangleNormal(point[0], point[1], point[2], planenormal);
2604                                         VectorNormalizeDouble(planenormal);
2605                                         planedist = DotProduct(point[0], planenormal);
2606                                         //ChooseTexturePlane(planenormal, texturevector[0], texturevector[1]);
2607                                 }
2608                                 continue;
2609                         }
2610                 }
2611         }
2612 #endif
2613 }
2614
2615
2616 #define MAX_PORTALPOINTS 64
2617
2618 typedef struct portal_s
2619 {
2620         mplane_t plane;
2621         mnode_t *nodes[2];              // [0] = front side of plane
2622         struct portal_s *next[2];
2623         int numpoints;
2624         double points[3*MAX_PORTALPOINTS];
2625         struct portal_s *chain; // all portals are linked into a list
2626 }
2627 portal_t;
2628
2629 static portal_t *portalchain;
2630
2631 /*
2632 ===========
2633 AllocPortal
2634 ===========
2635 */
2636 static portal_t *AllocPortal(void)
2637 {
2638         portal_t *p;
2639         p = (portal_t *)Mem_Alloc(loadmodel->mempool, sizeof(portal_t));
2640         p->chain = portalchain;
2641         portalchain = p;
2642         return p;
2643 }
2644
2645 static void FreePortal(portal_t *p)
2646 {
2647         Mem_Free(p);
2648 }
2649
2650 static void Mod_Q1BSP_RecursiveRecalcNodeBBox(mnode_t *node)
2651 {
2652         // process only nodes (leafs already had their box calculated)
2653         if (!node->plane)
2654                 return;
2655
2656         // calculate children first
2657         Mod_Q1BSP_RecursiveRecalcNodeBBox(node->children[0]);
2658         Mod_Q1BSP_RecursiveRecalcNodeBBox(node->children[1]);
2659
2660         // make combined bounding box from children
2661         node->mins[0] = min(node->children[0]->mins[0], node->children[1]->mins[0]);
2662         node->mins[1] = min(node->children[0]->mins[1], node->children[1]->mins[1]);
2663         node->mins[2] = min(node->children[0]->mins[2], node->children[1]->mins[2]);
2664         node->maxs[0] = max(node->children[0]->maxs[0], node->children[1]->maxs[0]);
2665         node->maxs[1] = max(node->children[0]->maxs[1], node->children[1]->maxs[1]);
2666         node->maxs[2] = max(node->children[0]->maxs[2], node->children[1]->maxs[2]);
2667 }
2668
2669 static void Mod_Q1BSP_FinalizePortals(void)
2670 {
2671         int i, j, numportals, numpoints;
2672         portal_t *p, *pnext;
2673         mportal_t *portal;
2674         mvertex_t *point;
2675         mleaf_t *leaf, *endleaf;
2676
2677         // tally up portal and point counts and recalculate bounding boxes for all
2678         // leafs (because qbsp is very sloppy)
2679         leaf = loadmodel->brush.data_leafs;
2680         endleaf = leaf + loadmodel->brush.num_leafs;
2681         for (;leaf < endleaf;leaf++)
2682         {
2683                 VectorSet(leaf->mins,  2000000000,  2000000000,  2000000000);
2684                 VectorSet(leaf->maxs, -2000000000, -2000000000, -2000000000);
2685         }
2686         p = portalchain;
2687         numportals = 0;
2688         numpoints = 0;
2689         while (p)
2690         {
2691                 // note: this check must match the one below or it will usually corrupt memory
2692                 // 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
2693                 if (p->numpoints >= 3 && p->nodes[0] != p->nodes[1] && ((mleaf_t *)p->nodes[0])->clusterindex >= 0 && ((mleaf_t *)p->nodes[1])->clusterindex >= 0)
2694                 {
2695                         numportals += 2;
2696                         numpoints += p->numpoints * 2;
2697                 }
2698                 p = p->chain;
2699         }
2700         loadmodel->brush.data_portals = (mportal_t *)Mem_Alloc(loadmodel->mempool, numportals * sizeof(mportal_t) + numpoints * sizeof(mvertex_t));
2701         loadmodel->brush.num_portals = numportals;
2702         loadmodel->brush.data_portalpoints = (mvertex_t *)((unsigned char *) loadmodel->brush.data_portals + numportals * sizeof(mportal_t));
2703         loadmodel->brush.num_portalpoints = numpoints;
2704         // clear all leaf portal chains
2705         for (i = 0;i < loadmodel->brush.num_leafs;i++)
2706                 loadmodel->brush.data_leafs[i].portals = NULL;
2707         // process all portals in the global portal chain, while freeing them
2708         portal = loadmodel->brush.data_portals;
2709         point = loadmodel->brush.data_portalpoints;
2710         p = portalchain;
2711         portalchain = NULL;
2712         while (p)
2713         {
2714                 pnext = p->chain;
2715
2716                 if (p->numpoints >= 3 && p->nodes[0] != p->nodes[1])
2717                 {
2718                         // note: this check must match the one above or it will usually corrupt memory
2719                         // 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
2720                         if (((mleaf_t *)p->nodes[0])->clusterindex >= 0 && ((mleaf_t *)p->nodes[1])->clusterindex >= 0)
2721                         {
2722                                 // first make the back to front portal(forward portal)
2723                                 portal->points = point;
2724                                 portal->numpoints = p->numpoints;
2725                                 portal->plane.dist = p->plane.dist;
2726                                 VectorCopy(p->plane.normal, portal->plane.normal);
2727                                 portal->here = (mleaf_t *)p->nodes[1];
2728                                 portal->past = (mleaf_t *)p->nodes[0];
2729                                 // copy points
2730                                 for (j = 0;j < portal->numpoints;j++)
2731                                 {
2732                                         VectorCopy(p->points + j*3, point->position);
2733                                         point++;
2734                                 }
2735                                 BoxFromPoints(portal->mins, portal->maxs, portal->numpoints, portal->points->position);
2736                                 PlaneClassify(&portal->plane);
2737
2738                                 // link into leaf's portal chain
2739                                 portal->next = portal->here->portals;
2740                                 portal->here->portals = portal;
2741
2742                                 // advance to next portal
2743                                 portal++;
2744
2745                                 // then make the front to back portal(backward portal)
2746                                 portal->points = point;
2747                                 portal->numpoints = p->numpoints;
2748                                 portal->plane.dist = -p->plane.dist;
2749                                 VectorNegate(p->plane.normal, portal->plane.normal);
2750                                 portal->here = (mleaf_t *)p->nodes[0];
2751                                 portal->past = (mleaf_t *)p->nodes[1];
2752                                 // copy points
2753                                 for (j = portal->numpoints - 1;j >= 0;j--)
2754                                 {
2755                                         VectorCopy(p->points + j*3, point->position);
2756                                         point++;
2757                                 }
2758                                 BoxFromPoints(portal->mins, portal->maxs, portal->numpoints, portal->points->position);
2759                                 PlaneClassify(&portal->plane);
2760
2761                                 // link into leaf's portal chain
2762                                 portal->next = portal->here->portals;
2763                                 portal->here->portals = portal;
2764
2765                                 // advance to next portal
2766                                 portal++;
2767                         }
2768                         // add the portal's polygon points to the leaf bounding boxes
2769                         for (i = 0;i < 2;i++)
2770                         {
2771                                 leaf = (mleaf_t *)p->nodes[i];
2772                                 for (j = 0;j < p->numpoints;j++)
2773                                 {
2774                                         if (leaf->mins[0] > p->points[j*3+0]) leaf->mins[0] = p->points[j*3+0];
2775                                         if (leaf->mins[1] > p->points[j*3+1]) leaf->mins[1] = p->points[j*3+1];
2776                                         if (leaf->mins[2] > p->points[j*3+2]) leaf->mins[2] = p->points[j*3+2];
2777                                         if (leaf->maxs[0] < p->points[j*3+0]) leaf->maxs[0] = p->points[j*3+0];
2778                                         if (leaf->maxs[1] < p->points[j*3+1]) leaf->maxs[1] = p->points[j*3+1];
2779                                         if (leaf->maxs[2] < p->points[j*3+2]) leaf->maxs[2] = p->points[j*3+2];
2780                                 }
2781                         }
2782                 }
2783                 FreePortal(p);
2784                 p = pnext;
2785         }
2786         // now recalculate the node bounding boxes from the leafs
2787         Mod_Q1BSP_RecursiveRecalcNodeBBox(loadmodel->brush.data_nodes);
2788 }
2789
2790 /*
2791 =============
2792 AddPortalToNodes
2793 =============
2794 */
2795 static void AddPortalToNodes(portal_t *p, mnode_t *front, mnode_t *back)
2796 {
2797         if (!front)
2798                 Host_Error("AddPortalToNodes: NULL front node");
2799         if (!back)
2800                 Host_Error("AddPortalToNodes: NULL back node");
2801         if (p->nodes[0] || p->nodes[1])
2802                 Host_Error("AddPortalToNodes: already included");
2803         // 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
2804
2805         p->nodes[0] = front;
2806         p->next[0] = (portal_t *)front->portals;
2807         front->portals = (mportal_t *)p;
2808
2809         p->nodes[1] = back;
2810         p->next[1] = (portal_t *)back->portals;
2811         back->portals = (mportal_t *)p;
2812 }
2813
2814 /*
2815 =============
2816 RemovePortalFromNode
2817 =============
2818 */
2819 static void RemovePortalFromNodes(portal_t *portal)
2820 {
2821         int i;
2822         mnode_t *node;
2823         void **portalpointer;
2824         portal_t *t;
2825         for (i = 0;i < 2;i++)
2826         {
2827                 node = portal->nodes[i];
2828
2829                 portalpointer = (void **) &node->portals;
2830                 while (1)
2831                 {
2832                         t = (portal_t *)*portalpointer;
2833                         if (!t)
2834                                 Host_Error("RemovePortalFromNodes: portal not in leaf");
2835
2836                         if (t == portal)
2837                         {
2838                                 if (portal->nodes[0] == node)
2839                                 {
2840                                         *portalpointer = portal->next[0];
2841                                         portal->nodes[0] = NULL;
2842                                 }
2843                                 else if (portal->nodes[1] == node)
2844                                 {
2845                                         *portalpointer = portal->next[1];
2846                                         portal->nodes[1] = NULL;
2847                                 }
2848                                 else
2849                                         Host_Error("RemovePortalFromNodes: portal not bounding leaf");
2850                                 break;
2851                         }
2852
2853                         if (t->nodes[0] == node)
2854                                 portalpointer = (void **) &t->next[0];
2855                         else if (t->nodes[1] == node)
2856                                 portalpointer = (void **) &t->next[1];
2857                         else
2858                                 Host_Error("RemovePortalFromNodes: portal not bounding leaf");
2859                 }
2860         }
2861 }
2862
2863 #define PORTAL_DIST_EPSILON (1.0 / 32.0)
2864 static void Mod_Q1BSP_RecursiveNodePortals(mnode_t *node)
2865 {
2866         int i, side;
2867         mnode_t *front, *back, *other_node;
2868         mplane_t clipplane, *plane;
2869         portal_t *portal, *nextportal, *nodeportal, *splitportal, *temp;
2870         int numfrontpoints, numbackpoints;
2871         double frontpoints[3*MAX_PORTALPOINTS], backpoints[3*MAX_PORTALPOINTS];
2872
2873         // if a leaf, we're done
2874         if (!node->plane)
2875                 return;
2876
2877         plane = node->plane;
2878
2879         front = node->children[0];
2880         back = node->children[1];
2881         if (front == back)
2882                 Host_Error("Mod_Q1BSP_RecursiveNodePortals: corrupt node hierarchy");
2883
2884         // create the new portal by generating a polygon for the node plane,
2885         // and clipping it by all of the other portals(which came from nodes above this one)
2886         nodeportal = AllocPortal();
2887         nodeportal->plane = *plane;
2888
2889         // 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)
2890         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);
2891         nodeportal->numpoints = 4;
2892         side = 0;       // shut up compiler warning
2893         for (portal = (portal_t *)node->portals;portal;portal = portal->next[side])
2894         {
2895                 clipplane = portal->plane;
2896                 if (portal->nodes[0] == portal->nodes[1])
2897                         Host_Error("Mod_Q1BSP_RecursiveNodePortals: portal has same node on both sides(1)");
2898                 if (portal->nodes[0] == node)
2899                         side = 0;
2900                 else if (portal->nodes[1] == node)
2901                 {
2902                         clipplane.dist = -clipplane.dist;
2903                         VectorNegate(clipplane.normal, clipplane.normal);
2904                         side = 1;
2905                 }
2906                 else
2907                         Host_Error("Mod_Q1BSP_RecursiveNodePortals: mislinked portal");
2908
2909                 for (i = 0;i < nodeportal->numpoints*3;i++)
2910                         frontpoints[i] = nodeportal->points[i];
2911                 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);
2912                 if (nodeportal->numpoints <= 0 || nodeportal->numpoints >= MAX_PORTALPOINTS)
2913                         break;
2914         }
2915
2916         if (nodeportal->numpoints < 3)
2917         {
2918                 Con_Print("Mod_Q1BSP_RecursiveNodePortals: WARNING: new portal was clipped away\n");
2919                 nodeportal->numpoints = 0;
2920         }
2921         else if (nodeportal->numpoints >= MAX_PORTALPOINTS)
2922         {
2923                 Con_Print("Mod_Q1BSP_RecursiveNodePortals: WARNING: new portal has too many points\n");
2924                 nodeportal->numpoints = 0;
2925         }
2926
2927         AddPortalToNodes(nodeportal, front, back);
2928
2929         // split the portals of this node along this node's plane and assign them to the children of this node
2930         // (migrating the portals downward through the tree)
2931         for (portal = (portal_t *)node->portals;portal;portal = nextportal)
2932         {
2933                 if (portal->nodes[0] == portal->nodes[1])
2934                         Host_Error("Mod_Q1BSP_RecursiveNodePortals: portal has same node on both sides(2)");
2935                 if (portal->nodes[0] == node)
2936                         side = 0;
2937                 else if (portal->nodes[1] == node)
2938                         side = 1;
2939                 else
2940                         Host_Error("Mod_Q1BSP_RecursiveNodePortals: mislinked portal");
2941                 nextportal = portal->next[side];
2942                 if (!portal->numpoints)
2943                         continue;
2944
2945                 other_node = portal->nodes[!side];
2946                 RemovePortalFromNodes(portal);
2947
2948                 // cut the portal into two portals, one on each side of the node plane
2949                 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);
2950
2951                 if (!numfrontpoints)
2952                 {
2953                         if (side == 0)
2954                                 AddPortalToNodes(portal, back, other_node);
2955                         else
2956                                 AddPortalToNodes(portal, other_node, back);
2957                         continue;
2958                 }
2959                 if (!numbackpoints)
2960                 {
2961                         if (side == 0)
2962                                 AddPortalToNodes(portal, front, other_node);
2963                         else
2964                                 AddPortalToNodes(portal, other_node, front);
2965                         continue;
2966                 }
2967
2968                 // the portal is split
2969                 splitportal = AllocPortal();
2970                 temp = splitportal->chain;
2971                 *splitportal = *portal;
2972                 splitportal->chain = temp;
2973                 for (i = 0;i < numbackpoints*3;i++)
2974                         splitportal->points[i] = backpoints[i];
2975                 splitportal->numpoints = numbackpoints;
2976                 for (i = 0;i < numfrontpoints*3;i++)
2977                         portal->points[i] = frontpoints[i];
2978                 portal->numpoints = numfrontpoints;
2979
2980                 if (side == 0)
2981                 {
2982                         AddPortalToNodes(portal, front, other_node);
2983                         AddPortalToNodes(splitportal, back, other_node);
2984                 }
2985                 else
2986                 {
2987                         AddPortalToNodes(portal, other_node, front);
2988                         AddPortalToNodes(splitportal, other_node, back);
2989                 }
2990         }
2991
2992         Mod_Q1BSP_RecursiveNodePortals(front);
2993         Mod_Q1BSP_RecursiveNodePortals(back);
2994 }
2995
2996 static void Mod_Q1BSP_MakePortals(void)
2997 {
2998         portalchain = NULL;
2999         Mod_Q1BSP_RecursiveNodePortals(loadmodel->brush.data_nodes);
3000         Mod_Q1BSP_FinalizePortals();
3001 }
3002
3003 static void Mod_Q1BSP_BuildLightmapUpdateChains(mempool_t *mempool, model_t *model)
3004 {
3005         int i, j, stylecounts[256], totalcount, remapstyles[256];
3006         msurface_t *surface;
3007         memset(stylecounts, 0, sizeof(stylecounts));
3008         for (i = 0;i < model->nummodelsurfaces;i++)
3009         {
3010                 surface = model->data_surfaces + model->firstmodelsurface + i;
3011                 for (j = 0;j < MAXLIGHTMAPS;j++)
3012                         stylecounts[surface->lightmapinfo->styles[j]]++;
3013         }
3014         totalcount = 0;
3015         model->brushq1.light_styles = 0;
3016         for (i = 0;i < 255;i++)
3017         {
3018                 if (stylecounts[i])
3019                 {
3020                         remapstyles[i] = model->brushq1.light_styles++;
3021                         totalcount += stylecounts[i] + 1;
3022                 }
3023         }
3024         if (!totalcount)
3025                 return;
3026         model->brushq1.light_style = (unsigned char *)Mem_Alloc(mempool, model->brushq1.light_styles * sizeof(unsigned char));
3027         model->brushq1.light_stylevalue = (int *)Mem_Alloc(mempool, model->brushq1.light_styles * sizeof(int));
3028         model->brushq1.light_styleupdatechains = (msurface_t ***)Mem_Alloc(mempool, model->brushq1.light_styles * sizeof(msurface_t **));
3029         model->brushq1.light_styleupdatechainsbuffer = (msurface_t **)Mem_Alloc(mempool, totalcount * sizeof(msurface_t *));
3030         model->brushq1.light_styles = 0;
3031         for (i = 0;i < 255;i++)
3032                 if (stylecounts[i])
3033                         model->brushq1.light_style[model->brushq1.light_styles++] = i;
3034         j = 0;
3035         for (i = 0;i < model->brushq1.light_styles;i++)
3036         {
3037                 model->brushq1.light_styleupdatechains[i] = model->brushq1.light_styleupdatechainsbuffer + j;
3038                 j += stylecounts[model->brushq1.light_style[i]] + 1;
3039         }
3040         for (i = 0;i < model->nummodelsurfaces;i++)
3041         {
3042                 surface = model->data_surfaces + model->firstmodelsurface + i;
3043                 for (j = 0;j < MAXLIGHTMAPS;j++)
3044                         if (surface->lightmapinfo->styles[j] != 255)
3045                                 *model->brushq1.light_styleupdatechains[remapstyles[surface->lightmapinfo->styles[j]]]++ = surface;
3046         }
3047         j = 0;
3048         for (i = 0;i < model->brushq1.light_styles;i++)
3049         {
3050                 *model->brushq1.light_styleupdatechains[i] = NULL;
3051                 model->brushq1.light_styleupdatechains[i] = model->brushq1.light_styleupdatechainsbuffer + j;
3052                 j += stylecounts[model->brushq1.light_style[i]] + 1;
3053         }
3054 }
3055
3056 //Returns PVS data for a given point
3057 //(note: can return NULL)
3058 static unsigned char *Mod_Q1BSP_GetPVS(model_t *model, const vec3_t p)
3059 {
3060         mnode_t *node;
3061         node = model->brush.data_nodes;
3062         while (node->plane)
3063                 node = node->children[(node->plane->type < 3 ? p[node->plane->type] : DotProduct(p,node->plane->normal)) < node->plane->dist];
3064         if (((mleaf_t *)node)->clusterindex >= 0)
3065                 return model->brush.data_pvsclusters + ((mleaf_t *)node)->clusterindex * model->brush.num_pvsclusterbytes;
3066         else
3067                 return NULL;
3068 }
3069
3070 static void Mod_Q1BSP_FatPVS_RecursiveBSPNode(model_t *model, const vec3_t org, vec_t radius, unsigned char *pvsbuffer, int pvsbytes, mnode_t *node)
3071 {
3072         while (node->plane)
3073         {
3074                 float d = PlaneDiff(org, node->plane);
3075                 if (d > radius)
3076                         node = node->children[0];
3077                 else if (d < -radius)
3078                         node = node->children[1];
3079                 else
3080                 {
3081                         // go down both sides
3082                         Mod_Q1BSP_FatPVS_RecursiveBSPNode(model, org, radius, pvsbuffer, pvsbytes, node->children[0]);
3083                         node = node->children[1];
3084                 }
3085         }
3086         // if this leaf is in a cluster, accumulate the pvs bits
3087         if (((mleaf_t *)node)->clusterindex >= 0)
3088         {
3089                 int i;
3090                 unsigned char *pvs = model->brush.data_pvsclusters + ((mleaf_t *)node)->clusterindex * model->brush.num_pvsclusterbytes;
3091                 for (i = 0;i < pvsbytes;i++)
3092                         pvsbuffer[i] |= pvs[i];
3093         }
3094 }
3095
3096 //Calculates a PVS that is the inclusive or of all leafs within radius pixels
3097 //of the given point.
3098 static int Mod_Q1BSP_FatPVS(model_t *model, const vec3_t org, vec_t radius, unsigned char *pvsbuffer, int pvsbufferlength)
3099 {
3100         int bytes = model->brush.num_pvsclusterbytes;
3101         bytes = min(bytes, pvsbufferlength);
3102         if (r_novis.integer || !model->brush.num_pvsclusters || !Mod_Q1BSP_GetPVS(model, org))
3103         {
3104                 memset(pvsbuffer, 0xFF, bytes);
3105                 return bytes;
3106         }
3107         memset(pvsbuffer, 0, bytes);
3108         Mod_Q1BSP_FatPVS_RecursiveBSPNode(model, org, radius, pvsbuffer, bytes, model->brush.data_nodes);
3109         return bytes;
3110 }
3111
3112 static void Mod_Q1BSP_RoundUpToHullSize(model_t *cmodel, const vec3_t inmins, const vec3_t inmaxs, vec3_t outmins, vec3_t outmaxs)
3113 {
3114         vec3_t size;
3115         const hull_t *hull;
3116
3117         VectorSubtract(inmaxs, inmins, size);
3118         if (cmodel->brush.ismcbsp)
3119         {
3120                 if (size[0] < 3)
3121                         hull = &cmodel->brushq1.hulls[0]; // 0x0x0
3122                 else if (size[2] < 48) // pick the nearest of 40 or 56
3123                         hull = &cmodel->brushq1.hulls[2]; // 16x16x40
3124                 else
3125                         hull = &cmodel->brushq1.hulls[1]; // 16x16x56
3126         }
3127         else if (cmodel->brush.ishlbsp)
3128         {
3129                 if (size[0] < 3)
3130                         hull = &cmodel->brushq1.hulls[0]; // 0x0x0
3131                 else if (size[0] <= 32)
3132                 {
3133                         if (size[2] < 54) // pick the nearest of 36 or 72
3134                                 hull = &cmodel->brushq1.hulls[3]; // 32x32x36
3135                         else
3136                                 hull = &cmodel->brushq1.hulls[1]; // 32x32x72
3137                 }
3138                 else
3139                         hull = &cmodel->brushq1.hulls[2]; // 64x64x64
3140         }
3141         else
3142         {
3143                 if (size[0] < 3)
3144                         hull = &cmodel->brushq1.hulls[0]; // 0x0x0
3145                 else if (size[0] <= 32)
3146                         hull = &cmodel->brushq1.hulls[1]; // 32x32x56
3147                 else
3148                         hull = &cmodel->brushq1.hulls[2]; // 64x64x88
3149         }
3150         VectorCopy(inmins, outmins);
3151         VectorAdd(inmins, hull->clip_size, outmaxs);
3152 }
3153
3154 void Mod_Q1BSP_Load(model_t *mod, void *buffer, void *bufferend)
3155 {
3156         int i, j, k;
3157         dheader_t *header;
3158         dmodel_t *bm;
3159         mempool_t *mainmempool;
3160         float dist, modelyawradius, modelradius, *vec;
3161         msurface_t *surface;
3162         int numshadowmeshtriangles;
3163         dheader_t _header;
3164         hullinfo_t hullinfo;
3165
3166         mod->type = mod_brushq1;
3167
3168         if (!memcmp (buffer, "MCBSPpad", 8))
3169         {
3170                 unsigned char   *index;
3171
3172                 mod->brush.ismcbsp = true;
3173                 mod->brush.ishlbsp = false;
3174
3175                 mod_base = (unsigned char*)buffer;
3176
3177                 index = mod_base;
3178                 index += 8;
3179                 i = SB_ReadInt (&index);
3180                 if (i != MCBSPVERSION)
3181                         Host_Error("Mod_Q1BSP_Load: %s has wrong version number(%i should be %i)", mod->name, i, MCBSPVERSION);
3182
3183         // read hull info
3184                 hullinfo.numhulls = LittleLong(*(int*)index); index += 4;
3185                 hullinfo.filehulls = hullinfo.numhulls;
3186                 VectorClear (hullinfo.hullsizes[0][0]);
3187                 VectorClear (hullinfo.hullsizes[0][1]);
3188                 for (i = 1; i < hullinfo.numhulls; i++)
3189                 {
3190                         hullinfo.hullsizes[i][0][0] = SB_ReadFloat (&index);
3191                         hullinfo.hullsizes[i][0][1] = SB_ReadFloat (&index);
3192                         hullinfo.hullsizes[i][0][2] = SB_ReadFloat (&index);
3193                         hullinfo.hullsizes[i][1][0] = SB_ReadFloat (&index);
3194                         hullinfo.hullsizes[i][1][1] = SB_ReadFloat (&index);
3195                         hullinfo.hullsizes[i][1][2] = SB_ReadFloat (&index);
3196                 }
3197
3198         // read lumps
3199                 _header.version = 0;
3200                 for (i = 0; i < HEADER_LUMPS; i++)
3201                 {
3202                         _header.lumps[i].fileofs = SB_ReadInt (&index);
3203                         _header.lumps[i].filelen = SB_ReadInt (&index);
3204                 }
3205
3206                 header = &_header;
3207         }
3208         else
3209         {
3210                 header = (dheader_t *)buffer;
3211
3212                 i = LittleLong(header->version);
3213                 if (i != BSPVERSION && i != 30)
3214                         Host_Error("Mod_Q1BSP_Load: %s has wrong version number(%i should be %i(Quake) or 30(HalfLife)", mod->name, i, BSPVERSION);
3215                 mod->brush.ishlbsp = i == 30;
3216                 mod->brush.ismcbsp = false;
3217
3218         // fill in hull info
3219                 VectorClear (hullinfo.hullsizes[0][0]);
3220                 VectorClear (hullinfo.hullsizes[0][1]);
3221                 if (mod->brush.ishlbsp)
3222                 {
3223                         hullinfo.numhulls = 4;
3224                         hullinfo.filehulls = 4;
3225                         VectorSet (hullinfo.hullsizes[1][0], -16, -16, -36);
3226                         VectorSet (hullinfo.hullsizes[1][1], 16, 16, 36);
3227                         VectorSet (hullinfo.hullsizes[2][0], -32, -32, -32);
3228                         VectorSet (hullinfo.hullsizes[2][1], 32, 32, 32);
3229                         VectorSet (hullinfo.hullsizes[3][0], -16, -16, -18);
3230                         VectorSet (hullinfo.hullsizes[3][1], 16, 16, 18);
3231                 }
3232                 else
3233                 {
3234                         hullinfo.numhulls = 3;
3235                         hullinfo.filehulls = 4;
3236                         VectorSet (hullinfo.hullsizes[1][0], -16, -16, -24);
3237                         VectorSet (hullinfo.hullsizes[1][1], 16, 16, 32);
3238                         VectorSet (hullinfo.hullsizes[2][0], -32, -32, -24);
3239                         VectorSet (hullinfo.hullsizes[2][1], 32, 32, 64);
3240                 }
3241
3242         // read lumps
3243                 mod_base = (unsigned char*)buffer;
3244                 for (i = 0; i < HEADER_LUMPS; i++)
3245                 {
3246                         header->lumps[i].fileofs = LittleLong(header->lumps[i].fileofs);
3247                         header->lumps[i].filelen = LittleLong(header->lumps[i].filelen);
3248                 }
3249         }
3250
3251         mod->soundfromcenter = true;
3252         mod->TraceBox = Mod_Q1BSP_TraceBox;
3253         mod->brush.SuperContentsFromNativeContents = Mod_Q1BSP_SuperContentsFromNativeContents;
3254         mod->brush.NativeContentsFromSuperContents = Mod_Q1BSP_NativeContentsFromSuperContents;
3255         mod->brush.GetPVS = Mod_Q1BSP_GetPVS;
3256         mod->brush.FatPVS = Mod_Q1BSP_FatPVS;
3257         mod->brush.BoxTouchingPVS = Mod_Q1BSP_BoxTouchingPVS;
3258         mod->brush.BoxTouchingLeafPVS = Mod_Q1BSP_BoxTouchingLeafPVS;
3259         mod->brush.BoxTouchingVisibleLeafs = Mod_Q1BSP_BoxTouchingVisibleLeafs;
3260         mod->brush.FindBoxClusters = Mod_Q1BSP_FindBoxClusters;
3261         mod->brush.LightPoint = Mod_Q1BSP_LightPoint;
3262         mod->brush.FindNonSolidLocation = Mod_Q1BSP_FindNonSolidLocation;
3263         mod->brush.AmbientSoundLevelsForPoint = Mod_Q1BSP_AmbientSoundLevelsForPoint;
3264         mod->brush.RoundUpToHullSize = Mod_Q1BSP_RoundUpToHullSize;
3265         mod->brush.PointInLeaf = Mod_Q1BSP_PointInLeaf;
3266
3267         if (loadmodel->isworldmodel)
3268         {
3269                 Cvar_SetValue("halflifebsp", mod->brush.ishlbsp);
3270                 Cvar_SetValue("mcbsp", mod->brush.ismcbsp);
3271         }
3272
3273 // load into heap
3274
3275         // store which lightmap format to use
3276         mod->brushq1.lightmaprgba = r_lightmaprgba.integer;
3277
3278         mod->brush.qw_md4sum = 0;
3279         mod->brush.qw_md4sum2 = 0;
3280         for (i = 0;i < HEADER_LUMPS;i++)
3281         {
3282                 if (i == LUMP_ENTITIES)
3283                         continue;
3284                 mod->brush.qw_md4sum ^= LittleLong(Com_BlockChecksum(mod_base + header->lumps[i].fileofs, header->lumps[i].filelen));
3285                 if (i == LUMP_VISIBILITY || i == LUMP_LEAFS || i == LUMP_NODES)
3286                         continue;
3287                 mod->brush.qw_md4sum2 ^= LittleLong(Com_BlockChecksum(mod_base + header->lumps[i].fileofs, header->lumps[i].filelen));
3288         }
3289
3290         Mod_Q1BSP_LoadEntities(&header->lumps[LUMP_ENTITIES]);
3291         Mod_Q1BSP_LoadVertexes(&header->lumps[LUMP_VERTEXES]);
3292         Mod_Q1BSP_LoadEdges(&header->lumps[LUMP_EDGES]);
3293         Mod_Q1BSP_LoadSurfedges(&header->lumps[LUMP_SURFEDGES]);
3294         Mod_Q1BSP_LoadTextures(&header->lumps[LUMP_TEXTURES]);
3295         Mod_Q1BSP_LoadLighting(&header->lumps[LUMP_LIGHTING]);
3296         Mod_Q1BSP_LoadPlanes(&header->lumps[LUMP_PLANES]);
3297         Mod_Q1BSP_LoadTexinfo(&header->lumps[LUMP_TEXINFO]);
3298         Mod_Q1BSP_LoadFaces(&header->lumps[LUMP_FACES]);
3299         Mod_Q1BSP_LoadLeaffaces(&header->lumps[LUMP_MARKSURFACES]);
3300         Mod_Q1BSP_LoadVisibility(&header->lumps[LUMP_VISIBILITY]);
3301         // load submodels before leafs because they contain the number of vis leafs
3302         Mod_Q1BSP_LoadSubmodels(&header->lumps[LUMP_MODELS], &hullinfo);
3303         Mod_Q1BSP_LoadLeafs(&header->lumps[LUMP_LEAFS]);
3304         Mod_Q1BSP_LoadNodes(&header->lumps[LUMP_NODES]);
3305         Mod_Q1BSP_LoadClipnodes(&header->lumps[LUMP_CLIPNODES], &hullinfo);
3306
3307         // check if the map supports transparent water rendering
3308         loadmodel->brush.supportwateralpha = Mod_Q1BSP_CheckWaterAlphaSupport();
3309
3310         if (!mod->brushq1.lightdata)
3311                 mod->brush.LightPoint = NULL;
3312
3313         if (mod->brushq1.data_compressedpvs)
3314                 Mem_Free(mod->brushq1.data_compressedpvs);
3315         mod->brushq1.data_compressedpvs = NULL;
3316         mod->brushq1.num_compressedpvs = 0;
3317
3318         Mod_Q1BSP_MakeHull0();
3319         Mod_Q1BSP_MakePortals();
3320
3321         mod->numframes = 2;             // regular and alternate animation
3322         mod->numskins = 1;
3323
3324         mainmempool = mod->mempool;
3325
3326         // make a single combined shadow mesh to allow optimized shadow volume creation
3327         numshadowmeshtriangles = 0;
3328         for (j = 0, surface = loadmodel->data_surfaces;j < loadmodel->num_surfaces;j++, surface++)
3329         {
3330                 surface->num_firstshadowmeshtriangle = numshadowmeshtriangles;
3331                 numshadowmeshtriangles += surface->num_triangles;
3332         }
3333         loadmodel->brush.shadowmesh = Mod_ShadowMesh_Begin(loadmodel->mempool, numshadowmeshtriangles * 3, numshadowmeshtriangles, NULL, NULL, NULL, false, false, true);
3334         for (j = 0, surface = loadmodel->data_surfaces;j < loadmodel->num_surfaces;j++, surface++)
3335                 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));
3336         loadmodel->brush.shadowmesh = Mod_ShadowMesh_Finish(loadmodel->mempool, loadmodel->brush.shadowmesh, false, true);
3337         Mod_BuildTriangleNeighbors(loadmodel->brush.shadowmesh->neighbor3i, loadmodel->brush.shadowmesh->element3i, loadmodel->brush.shadowmesh->numtriangles);
3338
3339         if (loadmodel->brush.numsubmodels)
3340                 loadmodel->brush.submodels = (model_t **)Mem_Alloc(loadmodel->mempool, loadmodel->brush.numsubmodels * sizeof(model_t *));
3341
3342         if (loadmodel->isworldmodel)
3343         {
3344                 // clear out any stale submodels or worldmodels lying around
3345                 // if we did this clear before now, an error might abort loading and
3346                 // leave things in a bad state
3347                 Mod_RemoveStaleWorldModels(loadmodel);
3348         }
3349
3350         // LordHavoc: to clear the fog around the original quake submodel code, I
3351         // will explain:
3352         // first of all, some background info on the submodels:
3353         // model 0 is the map model (the world, named maps/e1m1.bsp for example)
3354         // model 1 and higher are submodels (doors and the like, named *1, *2, etc)
3355         // now the weird for loop itself:
3356         // the loop functions in an odd way, on each iteration it sets up the
3357         // current 'mod' model (which despite the confusing code IS the model of
3358         // the number i), at the end of the loop it duplicates the model to become
3359         // the next submodel, and loops back to set up the new submodel.
3360
3361         // LordHavoc: now the explanation of my sane way (which works identically):
3362         // set up the world model, then on each submodel copy from the world model
3363         // and set up the submodel with the respective model info.
3364         for (i = 0;i < mod->brush.numsubmodels;i++)
3365         {
3366                 // LordHavoc: this code was originally at the end of this loop, but
3367                 // has been transformed to something more readable at the start here.
3368
3369                 if (i > 0)
3370                 {
3371                         char name[10];
3372                         // LordHavoc: only register submodels if it is the world
3373                         // (prevents external bsp models from replacing world submodels with
3374                         //  their own)
3375                         if (!loadmodel->isworldmodel)
3376                                 continue;
3377                         // duplicate the basic information
3378                         sprintf(name, "*%i", i);
3379                         mod = Mod_FindName(name);
3380                         // copy the base model to this one
3381                         *mod = *loadmodel;
3382                         // rename the clone back to its proper name
3383                         strlcpy(mod->name, name, sizeof(mod->name));
3384                         // textures and memory belong to the main model
3385                         mod->texturepool = NULL;
3386                         mod->mempool = NULL;
3387                 }
3388
3389                 mod->brush.submodel = i;
3390
3391                 if (loadmodel->brush.submodels)
3392                         loadmodel->brush.submodels[i] = mod;
3393
3394                 bm = &mod->brushq1.submodels[i];
3395
3396                 mod->brushq1.hulls[0].firstclipnode = bm->headnode[0];
3397                 for (j=1 ; j<MAX_MAP_HULLS ; j++)
3398                 {
3399                         mod->brushq1.hulls[j].firstclipnode = bm->headnode[j];
3400                         mod->brushq1.hulls[j].lastclipnode = mod->brushq1.numclipnodes - 1;
3401                 }
3402
3403                 mod->firstmodelsurface = bm->firstface;
3404                 mod->nummodelsurfaces = bm->numfaces;
3405
3406                 // make the model surface list (used by shadowing/lighting)
3407                 mod->surfacelist = (int *)Mem_Alloc(loadmodel->mempool, mod->nummodelsurfaces * sizeof(*mod->surfacelist));
3408                 for (j = 0;j < mod->nummodelsurfaces;j++)
3409                         mod->surfacelist[j] = mod->firstmodelsurface + j;
3410
3411                 // this gets altered below if sky is used
3412                 mod->DrawSky = NULL;
3413                 mod->Draw = R_Q1BSP_Draw;
3414                 mod->GetLightInfo = R_Q1BSP_GetLightInfo;
3415                 mod->CompileShadowVolume = R_Q1BSP_CompileShadowVolume;
3416                 mod->DrawShadowVolume = R_Q1BSP_DrawShadowVolume;
3417                 mod->DrawLight = R_Q1BSP_DrawLight;
3418                 if (i != 0)
3419                 {
3420                         mod->brush.GetPVS = NULL;
3421                         mod->brush.FatPVS = NULL;
3422                         mod->brush.BoxTouchingPVS = NULL;
3423                         mod->brush.BoxTouchingLeafPVS = NULL;
3424                         mod->brush.BoxTouchingVisibleLeafs = NULL;
3425                         mod->brush.FindBoxClusters = NULL;
3426                         mod->brush.LightPoint = NULL;
3427                         mod->brush.AmbientSoundLevelsForPoint = NULL;
3428                 }
3429                 Mod_Q1BSP_BuildLightmapUpdateChains(loadmodel->mempool, mod);
3430                 if (mod->nummodelsurfaces)
3431                 {
3432                         // LordHavoc: calculate bmodel bounding box rather than trusting what it says
3433                         mod->normalmins[0] = mod->normalmins[1] = mod->normalmins[2] = 1000000000.0f;
3434                         mod->normalmaxs[0] = mod->normalmaxs[1] = mod->normalmaxs[2] = -1000000000.0f;
3435                         modelyawradius = 0;
3436                         modelradius = 0;
3437                         for (j = 0, surface = &mod->data_surfaces[mod->firstmodelsurface];j < mod->nummodelsurfaces;j++, surface++)
3438                         {
3439                                 // we only need to have a drawsky function if it is used(usually only on world model)
3440                                 if (surface->texture->basematerialflags & MATERIALFLAG_SKY)
3441                                         mod->DrawSky = R_Q1BSP_DrawSky;
3442                                 // calculate bounding shapes
3443                                 for (k = 0, vec = (loadmodel->surfmesh.data_vertex3f + 3 * surface->num_firstvertex);k < surface->num_vertices;k++, vec += 3)
3444                                 {
3445                                         if (mod->normalmins[0] > vec[0]) mod->normalmins[0] = vec[0];
3446                                         if (mod->normalmins[1] > vec[1]) mod->normalmins[1] = vec[1];
3447                                         if (mod->normalmins[2] > vec[2]) mod->normalmins[2] = vec[2];
3448                                         if (mod->normalmaxs[0] < vec[0]) mod->normalmaxs[0] = vec[0];
3449                                         if (mod->normalmaxs[1] < vec[1]) mod->normalmaxs[1] = vec[1];
3450                                         if (mod->normalmaxs[2] < vec[2]) mod->normalmaxs[2] = vec[2];
3451                                         dist = vec[0]*vec[0]+vec[1]*vec[1];
3452                                         if (modelyawradius < dist)
3453                                                 modelyawradius = dist;
3454                                         dist += vec[2]*vec[2];
3455                                         if (modelradius < dist)
3456                                                 modelradius = dist;
3457                                 }
3458                         }
3459                         modelyawradius = sqrt(modelyawradius);
3460                         modelradius = sqrt(modelradius);
3461                         mod->yawmins[0] = mod->yawmins[1] = - (mod->yawmaxs[0] = mod->yawmaxs[1] = modelyawradius);
3462                         mod->yawmins[2] = mod->normalmins[2];
3463                         mod->yawmaxs[2] = mod->normalmaxs[2];
3464                         mod->rotatedmins[0] = mod->rotatedmins[1] = mod->rotatedmins[2] = -modelradius;
3465                         mod->rotatedmaxs[0] = mod->rotatedmaxs[1] = mod->rotatedmaxs[2] = modelradius;
3466                         mod->radius = modelradius;
3467                         mod->radius2 = modelradius * modelradius;
3468                 }
3469                 else
3470                 {
3471                         // LordHavoc: empty submodel(lacrima.bsp has such a glitch)
3472                         Con_Printf("warning: empty submodel *%i in %s\n", i+1, loadmodel->name);
3473                 }
3474                 //mod->brushq1.num_visleafs = bm->visleafs;
3475         }
3476
3477         Mod_Q1BSP_LoadMapBrushes();
3478
3479         //Mod_Q1BSP_ProcessLightList();
3480
3481         if (developer.integer >= 10)
3482                 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);
3483 }
3484
3485 static void Mod_Q2BSP_LoadEntities(lump_t *l)
3486 {
3487 }
3488
3489 static void Mod_Q2BSP_LoadPlanes(lump_t *l)
3490 {
3491 /*
3492         d_t *in;
3493         m_t *out;
3494         int i, count;
3495
3496         in = (void *)(mod_base + l->fileofs);
3497         if (l->filelen % sizeof(*in))
3498                 Host_Error("Mod_Q2BSP_LoadPlanes: funny lump size in %s",loadmodel->name);
3499         count = l->filelen / sizeof(*in);
3500         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
3501
3502         loadmodel-> = out;
3503         loadmodel->num = count;
3504
3505         for (i = 0;i < count;i++, in++, out++)
3506         {
3507         }
3508 */
3509 }
3510
3511 static void Mod_Q2BSP_LoadVertices(lump_t *l)
3512 {
3513 /*
3514         d_t *in;
3515         m_t *out;
3516         int i, count;
3517
3518         in = (void *)(mod_base + l->fileofs);
3519         if (l->filelen % sizeof(*in))
3520                 Host_Error("Mod_Q2BSP_LoadVertices: funny lump size in %s",loadmodel->name);
3521         count = l->filelen / sizeof(*in);
3522         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
3523
3524         loadmodel-> = out;
3525         loadmodel->num = count;
3526
3527         for (i = 0;i < count;i++, in++, out++)
3528         {
3529         }
3530 */
3531 }
3532
3533 static void Mod_Q2BSP_LoadVisibility(lump_t *l)
3534 {
3535 /*
3536         d_t *in;
3537         m_t *out;
3538         int i, count;
3539
3540         in = (void *)(mod_base + l->fileofs);
3541         if (l->filelen % sizeof(*in))
3542                 Host_Error("Mod_Q2BSP_LoadVisibility: funny lump size in %s",loadmodel->name);
3543         count = l->filelen / sizeof(*in);
3544         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
3545
3546         loadmodel-> = out;
3547         loadmodel->num = count;
3548
3549         for (i = 0;i < count;i++, in++, out++)
3550         {
3551         }
3552 */
3553 }
3554
3555 static void Mod_Q2BSP_LoadNodes(lump_t *l)
3556 {
3557 /*
3558         d_t *in;
3559         m_t *out;
3560         int i, count;
3561
3562         in = (void *)(mod_base + l->fileofs);
3563         if (l->filelen % sizeof(*in))
3564                 Host_Error("Mod_Q2BSP_LoadNodes: funny lump size in %s",loadmodel->name);
3565         count = l->filelen / sizeof(*in);
3566         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
3567
3568         loadmodel-> = out;
3569         loadmodel->num = count;
3570
3571         for (i = 0;i < count;i++, in++, out++)
3572         {
3573         }
3574 */
3575 }
3576
3577 static void Mod_Q2BSP_LoadTexInfo(lump_t *l)
3578 {
3579 /*
3580         d_t *in;
3581         m_t *out;
3582         int i, count;
3583
3584         in = (void *)(mod_base + l->fileofs);
3585         if (l->filelen % sizeof(*in))
3586                 Host_Error("Mod_Q2BSP_LoadTexInfo: funny lump size in %s",loadmodel->name);
3587         count = l->filelen / sizeof(*in);
3588         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
3589
3590         loadmodel-> = out;
3591         loadmodel->num = count;
3592
3593         for (i = 0;i < count;i++, in++, out++)
3594         {
3595         }
3596 */
3597 }
3598
3599 static void Mod_Q2BSP_LoadFaces(lump_t *l)
3600 {
3601 /*
3602         d_t *in;
3603         m_t *out;
3604         int i, count;
3605
3606         in = (void *)(mod_base + l->fileofs);
3607         if (l->filelen % sizeof(*in))
3608                 Host_Error("Mod_Q2BSP_LoadFaces: funny lump size in %s",loadmodel->name);
3609         count = l->filelen / sizeof(*in);
3610         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
3611
3612         loadmodel-> = out;
3613         loadmodel->num = count;
3614
3615         for (i = 0;i < count;i++, in++, out++)
3616         {
3617         }
3618 */
3619 }
3620
3621 static void Mod_Q2BSP_LoadLighting(lump_t *l)
3622 {
3623 /*
3624         d_t *in;
3625         m_t *out;
3626         int i, count;
3627
3628         in = (void *)(mod_base + l->fileofs);
3629         if (l->filelen % sizeof(*in))
3630                 Host_Error("Mod_Q2BSP_LoadLighting: funny lump size in %s",loadmodel->name);
3631         count = l->filelen / sizeof(*in);
3632         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
3633
3634         loadmodel-> = out;
3635         loadmodel->num = count;
3636
3637         for (i = 0;i < count;i++, in++, out++)
3638         {
3639         }
3640 */
3641 }
3642
3643 static void Mod_Q2BSP_LoadLeafs(lump_t *l)
3644 {
3645 /*
3646         d_t *in;
3647         m_t *out;
3648         int i, count;
3649
3650         in = (void *)(mod_base + l->fileofs);
3651         if (l->filelen % sizeof(*in))
3652                 Host_Error("Mod_Q2BSP_LoadLeafs: funny lump size in %s",loadmodel->name);
3653         count = l->filelen / sizeof(*in);
3654         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
3655
3656         loadmodel-> = out;
3657         loadmodel->num = count;
3658
3659         for (i = 0;i < count;i++, in++, out++)
3660         {
3661         }
3662 */
3663 }
3664
3665 static void Mod_Q2BSP_LoadLeafFaces(lump_t *l)
3666 {
3667 /*
3668         d_t *in;
3669         m_t *out;
3670         int i, count;
3671
3672         in = (void *)(mod_base + l->fileofs);
3673         if (l->filelen % sizeof(*in))
3674                 Host_Error("Mod_Q2BSP_LoadLeafFaces: funny lump size in %s",loadmodel->name);
3675         count = l->filelen / sizeof(*in);
3676         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
3677
3678         loadmodel-> = out;
3679         loadmodel->num = count;
3680
3681         for (i = 0;i < count;i++, in++, out++)
3682         {
3683         }
3684 */
3685 }
3686
3687 static void Mod_Q2BSP_LoadLeafBrushes(lump_t *l)
3688 {
3689 /*
3690         d_t *in;
3691         m_t *out;
3692         int i, count;
3693
3694         in = (void *)(mod_base + l->fileofs);
3695         if (l->filelen % sizeof(*in))
3696                 Host_Error("Mod_Q2BSP_LoadLeafBrushes: funny lump size in %s",loadmodel->name);
3697         count = l->filelen / sizeof(*in);
3698         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
3699
3700         loadmodel-> = out;
3701         loadmodel->num = count;
3702
3703         for (i = 0;i < count;i++, in++, out++)
3704         {
3705         }
3706 */
3707 }
3708
3709 static void Mod_Q2BSP_LoadEdges(lump_t *l)
3710 {
3711 /*
3712         d_t *in;
3713         m_t *out;
3714         int i, count;
3715
3716         in = (void *)(mod_base + l->fileofs);
3717         if (l->filelen % sizeof(*in))
3718                 Host_Error("Mod_Q2BSP_LoadEdges: funny lump size in %s",loadmodel->name);
3719         count = l->filelen / sizeof(*in);
3720         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
3721
3722         loadmodel-> = out;
3723         loadmodel->num = count;
3724
3725         for (i = 0;i < count;i++, in++, out++)
3726         {
3727         }
3728 */
3729 }
3730
3731 static void Mod_Q2BSP_LoadSurfEdges(lump_t *l)
3732 {
3733 /*
3734         d_t *in;
3735         m_t *out;
3736         int i, count;
3737
3738         in = (void *)(mod_base + l->fileofs);
3739         if (l->filelen % sizeof(*in))
3740                 Host_Error("Mod_Q2BSP_LoadSurfEdges: funny lump size in %s",loadmodel->name);
3741         count = l->filelen / sizeof(*in);
3742         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
3743
3744         loadmodel-> = out;
3745         loadmodel->num = count;
3746
3747         for (i = 0;i < count;i++, in++, out++)
3748         {
3749         }
3750 */
3751 }
3752
3753 static void Mod_Q2BSP_LoadBrushes(lump_t *l)
3754 {
3755 /*
3756         d_t *in;
3757         m_t *out;
3758         int i, count;
3759
3760         in = (void *)(mod_base + l->fileofs);
3761         if (l->filelen % sizeof(*in))
3762                 Host_Error("Mod_Q2BSP_LoadBrushes: funny lump size in %s",loadmodel->name);
3763         count = l->filelen / sizeof(*in);
3764         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
3765
3766         loadmodel-> = out;
3767         loadmodel->num = count;
3768
3769         for (i = 0;i < count;i++, in++, out++)
3770         {
3771         }
3772 */
3773 }
3774
3775 static void Mod_Q2BSP_LoadBrushSides(lump_t *l)
3776 {
3777 /*
3778         d_t *in;
3779         m_t *out;
3780         int i, count;
3781
3782         in = (void *)(mod_base + l->fileofs);
3783         if (l->filelen % sizeof(*in))
3784                 Host_Error("Mod_Q2BSP_LoadBrushSides: funny lump size in %s",loadmodel->name);
3785         count = l->filelen / sizeof(*in);
3786         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
3787
3788         loadmodel-> = out;
3789         loadmodel->num = count;
3790
3791         for (i = 0;i < count;i++, in++, out++)
3792         {
3793         }
3794 */
3795 }
3796
3797 static void Mod_Q2BSP_LoadAreas(lump_t *l)
3798 {
3799 /*
3800         d_t *in;
3801         m_t *out;
3802         int i, count;
3803
3804         in = (void *)(mod_base + l->fileofs);
3805         if (l->filelen % sizeof(*in))
3806                 Host_Error("Mod_Q2BSP_LoadAreas: funny lump size in %s",loadmodel->name);
3807         count = l->filelen / sizeof(*in);
3808         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
3809
3810         loadmodel-> = out;
3811         loadmodel->num = count;
3812
3813         for (i = 0;i < count;i++, in++, out++)
3814         {
3815         }
3816 */
3817 }
3818
3819 static void Mod_Q2BSP_LoadAreaPortals(lump_t *l)
3820 {
3821 /*
3822         d_t *in;
3823         m_t *out;
3824         int i, count;
3825
3826         in = (void *)(mod_base + l->fileofs);
3827         if (l->filelen % sizeof(*in))
3828                 Host_Error("Mod_Q2BSP_LoadAreaPortals: funny lump size in %s",loadmodel->name);
3829         count = l->filelen / sizeof(*in);
3830         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
3831
3832         loadmodel-> = out;
3833         loadmodel->num = count;
3834
3835         for (i = 0;i < count;i++, in++, out++)
3836         {
3837         }
3838 */
3839 }
3840
3841 static void Mod_Q2BSP_LoadModels(lump_t *l)
3842 {
3843 /*
3844         d_t *in;
3845         m_t *out;
3846         int i, count;
3847
3848         in = (void *)(mod_base + l->fileofs);
3849         if (l->filelen % sizeof(*in))
3850                 Host_Error("Mod_Q2BSP_LoadModels: funny lump size in %s",loadmodel->name);
3851         count = l->filelen / sizeof(*in);
3852         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
3853
3854         loadmodel-> = out;
3855         loadmodel->num = count;
3856
3857         for (i = 0;i < count;i++, in++, out++)
3858         {
3859         }
3860 */
3861 }
3862
3863 void static Mod_Q2BSP_Load(model_t *mod, void *buffer, void *bufferend)
3864 {
3865         int i;
3866         q2dheader_t *header;
3867
3868         Host_Error("Mod_Q2BSP_Load: not yet implemented");
3869
3870         mod->type = mod_brushq2;
3871
3872         header = (q2dheader_t *)buffer;
3873
3874         i = LittleLong(header->version);
3875         if (i != Q2BSPVERSION)
3876                 Host_Error("Mod_Q2BSP_Load: %s has wrong version number (%i, should be %i)", mod->name, i, Q2BSPVERSION);
3877         mod->brush.ishlbsp = false;
3878         mod->brush.ismcbsp = false;
3879         if (loadmodel->isworldmodel)
3880         {
3881                 Cvar_SetValue("halflifebsp", mod->brush.ishlbsp);
3882                 Cvar_SetValue("mcbsp", mod->brush.ismcbsp);
3883         }
3884
3885         mod_base = (unsigned char *)header;
3886
3887         // swap all the lumps
3888         for (i = 0;i < (int) sizeof(*header) / 4;i++)
3889                 ((int *)header)[i] = LittleLong(((int *)header)[i]);
3890
3891         // store which lightmap format to use
3892         mod->brushq1.lightmaprgba = r_lightmaprgba.integer;
3893
3894         mod->brush.qw_md4sum = 0;
3895         mod->brush.qw_md4sum2 = 0;
3896         for (i = 0;i < Q2HEADER_LUMPS;i++)
3897         {
3898                 if (i == Q2LUMP_ENTITIES)
3899                         continue;
3900                 mod->brush.qw_md4sum ^= Com_BlockChecksum(mod_base + header->lumps[i].fileofs, header->lumps[i].filelen);
3901                 if (i == Q2LUMP_VISIBILITY || i == Q2LUMP_LEAFS || i == Q2LUMP_NODES)
3902                         continue;
3903                 mod->brush.qw_md4sum2 ^= Com_BlockChecksum(mod_base + header->lumps[i].fileofs, header->lumps[i].filelen);
3904         }
3905
3906         Mod_Q2BSP_LoadEntities(&header->lumps[Q2LUMP_ENTITIES]);
3907         Mod_Q2BSP_LoadPlanes(&header->lumps[Q2LUMP_PLANES]);
3908         Mod_Q2BSP_LoadVertices(&header->lumps[Q2LUMP_VERTEXES]);
3909         Mod_Q2BSP_LoadVisibility(&header->lumps[Q2LUMP_VISIBILITY]);
3910         Mod_Q2BSP_LoadNodes(&header->lumps[Q2LUMP_NODES]);
3911         Mod_Q2BSP_LoadTexInfo(&header->lumps[Q2LUMP_TEXINFO]);
3912         Mod_Q2BSP_LoadFaces(&header->lumps[Q2LUMP_FACES]);
3913         Mod_Q2BSP_LoadLighting(&header->lumps[Q2LUMP_LIGHTING]);
3914         Mod_Q2BSP_LoadLeafs(&header->lumps[Q2LUMP_LEAFS]);
3915         Mod_Q2BSP_LoadLeafFaces(&header->lumps[Q2LUMP_LEAFFACES]);
3916         Mod_Q2BSP_LoadLeafBrushes(&header->lumps[Q2LUMP_LEAFBRUSHES]);
3917         Mod_Q2BSP_LoadEdges(&header->lumps[Q2LUMP_EDGES]);
3918         Mod_Q2BSP_LoadSurfEdges(&header->lumps[Q2LUMP_SURFEDGES]);
3919         Mod_Q2BSP_LoadBrushes(&header->lumps[Q2LUMP_BRUSHES]);
3920         Mod_Q2BSP_LoadBrushSides(&header->lumps[Q2LUMP_BRUSHSIDES]);
3921         Mod_Q2BSP_LoadAreas(&header->lumps[Q2LUMP_AREAS]);
3922         Mod_Q2BSP_LoadAreaPortals(&header->lumps[Q2LUMP_AREAPORTALS]);
3923         // LordHavoc: must go last because this makes the submodels
3924         Mod_Q2BSP_LoadModels(&header->lumps[Q2LUMP_MODELS]);
3925 }
3926
3927 static int Mod_Q3BSP_SuperContentsFromNativeContents(model_t *model, int nativecontents);
3928 static int Mod_Q3BSP_NativeContentsFromSuperContents(model_t *model, int supercontents);
3929
3930 static void Mod_Q3BSP_LoadEntities(lump_t *l)
3931 {
3932         const char *data;
3933         char key[128], value[MAX_INPUTLINE];
3934         float v[3];
3935         loadmodel->brushq3.num_lightgrid_cellsize[0] = 64;
3936         loadmodel->brushq3.num_lightgrid_cellsize[1] = 64;
3937         loadmodel->brushq3.num_lightgrid_cellsize[2] = 128;
3938         if (!l->filelen)
3939                 return;
3940         loadmodel->brush.entities = (char *)Mem_Alloc(loadmodel->mempool, l->filelen);
3941         memcpy(loadmodel->brush.entities, mod_base + l->fileofs, l->filelen);
3942         data = loadmodel->brush.entities;
3943         // some Q3 maps override the lightgrid_cellsize with a worldspawn key
3944         if (data && COM_ParseTokenConsole(&data) && com_token[0] == '{')
3945         {
3946                 while (1)
3947                 {
3948                         if (!COM_ParseTokenConsole(&data))
3949                                 break; // error
3950                         if (com_token[0] == '}')
3951                                 break; // end of worldspawn
3952                         if (com_token[0] == '_')
3953                                 strlcpy(key, com_token + 1, sizeof(key));
3954                         else
3955                                 strlcpy(key, com_token, sizeof(key));
3956                         while (key[strlen(key)-1] == ' ') // remove trailing spaces
3957                                 key[strlen(key)-1] = 0;
3958                         if (!COM_ParseTokenConsole(&data))
3959                                 break; // error
3960                         strlcpy(value, com_token, sizeof(value));
3961                         if (!strcmp("gridsize", key))
3962                         {
3963                                 if (sscanf(value, "%f %f %f", &v[0], &v[1], &v[2]) == 3 && v[0] != 0 && v[1] != 0 && v[2] != 0)
3964                                         VectorCopy(v, loadmodel->brushq3.num_lightgrid_cellsize);
3965                         }
3966                 }
3967         }
3968 }
3969
3970 // FIXME: make MAXSHADERS dynamic
3971 #define Q3SHADER_MAXSHADERS 4096
3972 #define Q3SHADER_MAXLAYERS 8
3973
3974 typedef struct q3shaderinfo_layer_s
3975 {
3976         int alphatest;
3977         int clampmap;
3978         float framerate;
3979         int numframes;
3980         char texturename[TEXTURE_MAXFRAMES][Q3PATHLENGTH];
3981         int blendfunc[2];
3982         qboolean rgbgenvertex;
3983         qboolean alphagenvertex;
3984 }
3985 q3shaderinfo_layer_t;
3986
3987 typedef struct q3shaderinfo_s
3988 {
3989         char name[Q3PATHLENGTH];
3990         int surfaceparms;
3991         int textureflags;
3992         int numlayers;
3993         qboolean lighting;
3994         qboolean vertexalpha;
3995         qboolean textureblendalpha;
3996         q3shaderinfo_layer_t *primarylayer, *backgroundlayer;
3997         q3shaderinfo_layer_t layers[Q3SHADER_MAXLAYERS];
3998         char skyboxname[Q3PATHLENGTH];
3999 }
4000 q3shaderinfo_t;
4001
4002 int q3shaders_numshaders;
4003 q3shaderinfo_t q3shaders_shaders[Q3SHADER_MAXSHADERS];
4004
4005 static void Mod_Q3BSP_LoadShaders(void)
4006 {
4007         int j;
4008         int fileindex;
4009         fssearch_t *search;
4010         char *f;
4011         const char *text;
4012         q3shaderinfo_t *shader;
4013         q3shaderinfo_layer_t *layer;
4014         int numparameters;
4015         char parameter[TEXTURE_MAXFRAMES + 4][Q3PATHLENGTH];
4016         search = FS_Search("scripts/*.shader", true, false);
4017         if (!search)
4018                 return;
4019         q3shaders_numshaders = 0;
4020         for (fileindex = 0;fileindex < search->numfilenames;fileindex++)
4021         {
4022                 text = f = (char *)FS_LoadFile(search->filenames[fileindex], tempmempool, false, NULL);
4023                 if (!f)
4024                         continue;
4025                 while (COM_ParseToken(&text, false))
4026                 {
4027                         if (q3shaders_numshaders >= Q3SHADER_MAXSHADERS)
4028                         {
4029                                 Con_Printf("Mod_Q3BSP_LoadShaders: too many shaders!\n");
4030                                 break;
4031                         }
4032                         shader = q3shaders_shaders + q3shaders_numshaders++;
4033                         memset(shader, 0, sizeof(*shader));
4034                         strlcpy(shader->name, com_token, sizeof(shader->name));
4035                         if (!COM_ParseToken(&text, false) || strcasecmp(com_token, "{"))
4036                         {
4037                                 Con_Printf("%s parsing error - expected \"{\", found \"%s\"\n", search->filenames[fileindex], com_token);
4038                                 break;
4039                         }
4040                         while (COM_ParseToken(&text, false))
4041                         {
4042                                 if (!strcasecmp(com_token, "}"))
4043                                         break;
4044                                 if (!strcasecmp(com_token, "{"))
4045                                 {
4046                                         if (shader->numlayers < Q3SHADER_MAXLAYERS)
4047                                         {
4048                                                 layer = shader->layers + shader->numlayers++;
4049                                                 layer->rgbgenvertex = false;
4050                                                 layer->alphagenvertex = false;
4051                                                 layer->blendfunc[0] = GL_ONE;
4052                                                 layer->blendfunc[1] = GL_ZERO;
4053                                         }
4054                                         else
4055                                                 layer = NULL;
4056                                         while (COM_ParseToken(&text, false))
4057                                         {
4058                                                 if (!strcasecmp(com_token, "}"))
4059                                                         break;
4060                                                 if (!strcasecmp(com_token, "\n"))
4061                                                         continue;
4062                                                 if (layer == NULL)
4063                                                         continue;
4064                                                 numparameters = 0;
4065                                                 for (j = 0;strcasecmp(com_token, "\n") && strcasecmp(com_token, "}");j++)
4066                                                 {
4067                                                         if (j < TEXTURE_MAXFRAMES + 4)
4068                                                         {
4069                                                                 strlcpy(parameter[j], com_token, sizeof(parameter[j]));
4070                                                                 numparameters = j + 1;
4071                                                         }
4072                                                         if (!COM_ParseToken(&text, true))
4073                                                                 break;
4074                                                 }
4075                                                 if (developer.integer >= 100)
4076                                                 {
4077                                                         Con_Printf("%s %i: ", shader->name, shader->numlayers - 1);
4078                                                         for (j = 0;j < numparameters;j++)
4079                                                                 Con_Printf(" %s", parameter[j]);
4080                                                         Con_Print("\n");
4081                                                 }
4082                                                 if (numparameters >= 2 && !strcasecmp(parameter[0], "blendfunc"))
4083                                                 {
4084                                                         if (numparameters == 2)
4085                                                         {
4086                                                                 if (!strcasecmp(parameter[1], "add"))
4087                                                                 {
4088                                                                         layer->blendfunc[0] = GL_ONE;
4089                                                                         layer->blendfunc[1] = GL_ONE;
4090                                                                 }
4091                                                                 else if (!strcasecmp(parameter[1], "filter"))
4092                                                                 {
4093                                                                         layer->blendfunc[0] = GL_DST_COLOR;
4094                                                                         layer->blendfunc[1] = GL_ZERO;
4095                                                                 }
4096                                                                 else if (!strcasecmp(parameter[1], "blend"))
4097                                                                 {
4098                                                                         layer->blendfunc[0] = GL_SRC_ALPHA;
4099                                                                         layer->blendfunc[1] = GL_ONE_MINUS_SRC_ALPHA;
4100                                                                 }
4101                                                         }
4102                                                         else if (numparameters == 3)
4103                                                         {
4104                                                                 int k;
4105                                                                 for (k = 0;k < 2;k++)
4106                                                                 {
4107                                                                         if (!strcasecmp(parameter[k+1], "GL_ONE"))
4108                                                                                 layer->blendfunc[k] = GL_ONE;
4109                                                                         else if (!strcasecmp(parameter[k+1], "GL_ZERO"))
4110                                                                                 layer->blendfunc[k] = GL_ZERO;
4111                                                                         else if (!strcasecmp(parameter[k+1], "GL_SRC_COLOR"))
4112                                                                                 layer->blendfunc[k] = GL_SRC_COLOR;
4113                                                                         else if (!strcasecmp(parameter[k+1], "GL_SRC_ALPHA"))
4114                                                                                 layer->blendfunc[k] = GL_SRC_ALPHA;
4115                                                                         else if (!strcasecmp(parameter[k+1], "GL_DST_COLOR"))
4116                                                                                 layer->blendfunc[k] = GL_DST_COLOR;
4117                                                                         else if (!strcasecmp(parameter[k+1], "GL_DST_ALPHA"))
4118                                                                                 layer->blendfunc[k] = GL_ONE_MINUS_DST_ALPHA;
4119                                                                         else if (!strcasecmp(parameter[k+1], "GL_ONE_MINUS_SRC_COLOR"))
4120                                                                                 layer->blendfunc[k] = GL_ONE_MINUS_SRC_COLOR;
4121                                                                         else if (!strcasecmp(parameter[k+1], "GL_ONE_MINUS_SRC_ALPHA"))
4122                                                                                 layer->blendfunc[k] = GL_ONE_MINUS_SRC_ALPHA;
4123                                                                         else if (!strcasecmp(parameter[k+1], "GL_ONE_MINUS_DST_COLOR"))
4124                                                                                 layer->blendfunc[k] = GL_ONE_MINUS_DST_COLOR;
4125                                                                         else if (!strcasecmp(parameter[k+1], "GL_ONE_MINUS_DST_ALPHA"))
4126                                                                                 layer->blendfunc[k] = GL_ONE_MINUS_DST_ALPHA;
4127                                                                         else
4128                                                                                 layer->blendfunc[k] = GL_ONE; // default in case of parsing error
4129                                                                 }
4130                                                         }
4131                                                 }
4132                                                 if (numparameters >= 2 && !strcasecmp(parameter[0], "alphafunc"))
4133                                                         layer->alphatest = true;
4134                                                 if (numparameters >= 2 && (!strcasecmp(parameter[0], "map") || !strcasecmp(parameter[0], "clampmap")))
4135                                                 {
4136                                                         if (!strcasecmp(parameter[0], "clampmap"))
4137                                                                 layer->clampmap = true;
4138                                                         layer->numframes = 1;
4139                                                         layer->framerate = 1;
4140                                                         strlcpy(layer->texturename[0], parameter[1], sizeof(layer->texturename));
4141                                                         if (!strcasecmp(parameter[1], "$lightmap"))
4142                                                                 shader->lighting = true;
4143                                                 }
4144                                                 else if (numparameters >= 3 && (!strcasecmp(parameter[0], "animmap") || !strcasecmp(parameter[0], "animclampmap")))
4145                                                 {
4146                                                         int i;
4147                                                         layer->numframes = min(numparameters - 2, TEXTURE_MAXFRAMES);
4148                                                         layer->framerate = atoi(parameter[1]);
4149                                                         for (i = 0;i < layer->numframes;i++)
4150                                                                 strlcpy(layer->texturename[i], parameter[i + 2], sizeof(layer->texturename));
4151                                                 }
4152                                                 else if (numparameters >= 2 && !strcasecmp(parameter[0], "rgbgen") && !strcasecmp(parameter[1], "vertex"))
4153                                                         layer->rgbgenvertex = true;
4154                                                 else if (numparameters >= 2 && !strcasecmp(parameter[0], "alphagen") && !strcasecmp(parameter[1], "vertex"))
4155                                                         layer->alphagenvertex = true;
4156                                                 // break out a level if it was }
4157                                                 if (!strcasecmp(com_token, "}"))
4158                                                         break;
4159                                         }
4160                                         if (layer->rgbgenvertex)
4161                                                 shader->lighting = true;
4162                                         if (layer->alphagenvertex)
4163                                         {
4164                                                 if (layer == shader->layers + 0)
4165                                                 {
4166                                                         // vertex controlled transparency
4167                                                         shader->vertexalpha = true;
4168                                                 }
4169                                                 else
4170                                                 {
4171                                                         // multilayer terrain shader or similar
4172                                                         shader->textureblendalpha = true;
4173                                                 }
4174                                         }
4175                                         continue;
4176                                 }
4177                                 numparameters = 0;
4178                                 for (j = 0;strcasecmp(com_token, "\n") && strcasecmp(com_token, "}");j++)
4179                                 {
4180                                         if (j < TEXTURE_MAXFRAMES + 4)
4181                                         {
4182                                                 strlcpy(parameter[j], com_token, sizeof(parameter[j]));
4183                                                 numparameters = j + 1;
4184                                         }
4185                                         if (!COM_ParseToken(&text, true))
4186                                                 break;
4187                                 }
4188                                 if (fileindex == 0 && !strcasecmp(com_token, "}"))
4189                                         break;
4190                                 if (developer.integer >= 100)
4191                                 {
4192                                         Con_Printf("%s: ", shader->name);
4193                                         for (j = 0;j < numparameters;j++)
4194                                                 Con_Printf(" %s", parameter[j]);
4195                                         Con_Print("\n");
4196                                 }
4197                                 if (numparameters < 1)
4198                                         continue;
4199                                 if (!strcasecmp(parameter[0], "surfaceparm") && numparameters >= 2)
4200                                 {
4201                                         if (!strcasecmp(parameter[1], "alphashadow"))
4202                                                 shader->surfaceparms |= Q3SURFACEPARM_ALPHASHADOW;
4203                                         else if (!strcasecmp(parameter[1], "areaportal"))
4204                                                 shader->surfaceparms |= Q3SURFACEPARM_AREAPORTAL;
4205                                         else if (!strcasecmp(parameter[1], "botclip"))
4206                                                 shader->surfaceparms |= Q3SURFACEPARM_BOTCLIP;
4207                                         else if (!strcasecmp(parameter[1], "clusterportal"))
4208                                                 shader->surfaceparms |= Q3SURFACEPARM_CLUSTERPORTAL;
4209                                         else if (!strcasecmp(parameter[1], "detail"))
4210                                                 shader->surfaceparms |= Q3SURFACEPARM_DETAIL;
4211                                         else if (!strcasecmp(parameter[1], "donotenter"))
4212                                                 shader->surfaceparms |= Q3SURFACEPARM_DONOTENTER;
4213                                         else if (!strcasecmp(parameter[1], "dust"))
4214                                                 shader->surfaceparms |= Q3SURFACEPARM_DUST;
4215                                         else if (!strcasecmp(parameter[1], "hint"))
4216                                                 shader->surfaceparms |= Q3SURFACEPARM_HINT;
4217                                         else if (!strcasecmp(parameter[1], "fog"))
4218                                                 shader->surfaceparms |= Q3SURFACEPARM_FOG;
4219                                         else if (!strcasecmp(parameter[1], "lava"))
4220                                                 shader->surfaceparms |= Q3SURFACEPARM_LAVA;
4221                                         else if (!strcasecmp(parameter[1], "lightfilter"))
4222                                                 shader->surfaceparms |= Q3SURFACEPARM_LIGHTFILTER;
4223                                         else if (!strcasecmp(parameter[1], "lightgrid"))
4224                                                 shader->surfaceparms |= Q3SURFACEPARM_LIGHTGRID;
4225                                         else if (!strcasecmp(parameter[1], "metalsteps"))
4226                                                 shader->surfaceparms |= Q3SURFACEPARM_METALSTEPS;
4227                                         else if (!strcasecmp(parameter[1], "nodamage"))
4228                                                 shader->surfaceparms |= Q3SURFACEPARM_NODAMAGE;
4229                                         else if (!strcasecmp(parameter[1], "nodlight"))
4230                                                 shader->surfaceparms |= Q3SURFACEPARM_NODLIGHT;
4231                                         else if (!strcasecmp(parameter[1], "nodraw"))
4232                                                 shader->surfaceparms |= Q3SURFACEPARM_NODRAW;
4233                                         else if (!strcasecmp(parameter[1], "nodrop"))
4234                                                 shader->surfaceparms |= Q3SURFACEPARM_NODROP;
4235                                         else if (!strcasecmp(parameter[1], "noimpact"))
4236                                                 shader->surfaceparms |= Q3SURFACEPARM_NOIMPACT;
4237                                         else if (!strcasecmp(parameter[1], "nolightmap"))
4238                                                 shader->surfaceparms |= Q3SURFACEPARM_NOLIGHTMAP;
4239                                         else if (!strcasecmp(parameter[1], "nomarks"))
4240                                                 shader->surfaceparms |= Q3SURFACEPARM_NOMARKS;
4241                                         else if (!strcasecmp(parameter[1], "nomipmaps"))
4242                                                 shader->surfaceparms |= Q3SURFACEPARM_NOMIPMAPS;
4243                                         else if (!strcasecmp(parameter[1], "nonsolid"))
4244                                                 shader->surfaceparms |= Q3SURFACEPARM_NONSOLID;
4245                                         else if (!strcasecmp(parameter[1], "origin"))
4246                                                 shader->surfaceparms |= Q3SURFACEPARM_ORIGIN;
4247                                         else if (!strcasecmp(parameter[1], "playerclip"))
4248                                                 shader->surfaceparms |= Q3SURFACEPARM_PLAYERCLIP;
4249                                         else if (!strcasecmp(parameter[1], "sky"))
4250                                                 shader->surfaceparms |= Q3SURFACEPARM_SKY;
4251                                         else if (!strcasecmp(parameter[1], "slick"))
4252                                                 shader->surfaceparms |= Q3SURFACEPARM_SLICK;
4253                                         else if (!strcasecmp(parameter[1], "slime"))
4254                                                 shader->surfaceparms |= Q3SURFACEPARM_SLIME;
4255                                         else if (!strcasecmp(parameter[1], "structural"))
4256                                                 shader->surfaceparms |= Q3SURFACEPARM_STRUCTURAL;
4257                                         else if (!strcasecmp(parameter[1], "trans"))
4258                                                 shader->surfaceparms |= Q3SURFACEPARM_TRANS;
4259                                         else if (!strcasecmp(parameter[1], "water"))
4260                                                 shader->surfaceparms |= Q3SURFACEPARM_WATER;
4261                                         else if (!strcasecmp(parameter[1], "pointlight"))
4262                                                 shader->surfaceparms |= Q3SURFACEPARM_POINTLIGHT;
4263                                         else
4264                                                 Con_Printf("%s parsing warning: unknown surfaceparm \"%s\"\n", search->filenames[fileindex], parameter[1]);
4265                                 }
4266                                 else if (!strcasecmp(parameter[0], "sky") && numparameters >= 2)
4267                                 {
4268                                         // some q3 skies don't have the sky parm set
4269                                         shader->surfaceparms |= Q3SURFACEPARM_SKY;
4270                                         strlcpy(shader->skyboxname, parameter[1], sizeof(shader->skyboxname));
4271                                 }
4272                                 else if (!strcasecmp(parameter[0], "skyparms") && numparameters >= 2)
4273                                 {
4274                                         // some q3 skies don't have the sky parm set
4275                                         shader->surfaceparms |= Q3SURFACEPARM_SKY;
4276                                         if (!atoi(parameter[1]) && strcasecmp(parameter[1], "-"))
4277                                                 strlcpy(shader->skyboxname, parameter[1], sizeof(shader->skyboxname));
4278                                 }
4279                                 else if (!strcasecmp(parameter[0], "cull") && numparameters >= 2)
4280                                 {
4281                                         if (!strcasecmp(parameter[1], "disable") || !strcasecmp(parameter[1], "none") || !strcasecmp(parameter[1], "twosided"))
4282                                                 shader->textureflags |= Q3TEXTUREFLAG_TWOSIDED;
4283                                 }
4284                                 else if (!strcasecmp(parameter[0], "nomipmaps"))
4285                                         shader->surfaceparms |= Q3SURFACEPARM_NOMIPMAPS;
4286                                 else if (!strcasecmp(parameter[0], "nopicmip"))
4287                                         shader->textureflags |= Q3TEXTUREFLAG_NOPICMIP;
4288                                 else if (!strcasecmp(parameter[0], "deformvertexes") && numparameters >= 2)
4289                                 {
4290                                         if (!strcasecmp(parameter[1], "autosprite") && numparameters == 2)
4291                                                 shader->textureflags |= Q3TEXTUREFLAG_AUTOSPRITE;
4292                                         if (!strcasecmp(parameter[1], "autosprite2") && numparameters == 2)
4293                                                 shader->textureflags |= Q3TEXTUREFLAG_AUTOSPRITE2;
4294                                 }
4295                         }
4296                         // identify if this is a blended terrain shader or similar
4297                         if (shader->numlayers)
4298                         {
4299                                 shader->primarylayer = shader->layers + 0;
4300                                 if ((shader->layers[1].blendfunc[0] == GL_SRC_ALPHA && shader->layers[1].blendfunc[1] == GL_ONE_MINUS_SRC_ALPHA) || shader->layers[1].alphatest)
4301                                 {
4302                                         // terrain blending or other effects
4303                                         shader->backgroundlayer = shader->layers + 0;
4304                                         shader->primarylayer = shader->layers + 1;
4305                                 }
4306                                 // now see if the lightmap came first, and if so choose the second texture instead
4307                                 if (!strcasecmp(shader->primarylayer->texturename[0], "$lightmap"))
4308                                         shader->primarylayer = shader->layers + 1;
4309                         }
4310                 }
4311                 Mem_Free(f);
4312         }
4313 }
4314
4315 q3shaderinfo_t *Mod_Q3BSP_LookupShader(const char *name)
4316 {
4317         int i;
4318         for (i = 0;i < Q3SHADER_MAXSHADERS;i++)
4319                 if (!strcasecmp(q3shaders_shaders[i].name, name))
4320                         return q3shaders_shaders + i;
4321         return NULL;
4322 }
4323
4324 static void Mod_Q3BSP_LoadTextures(lump_t *l)
4325 {
4326         q3dtexture_t *in;
4327         texture_t *out;
4328         int i, count, c;
4329
4330         in = (q3dtexture_t *)(mod_base + l->fileofs);
4331         if (l->filelen % sizeof(*in))
4332                 Host_Error("Mod_Q3BSP_LoadTextures: funny lump size in %s",loadmodel->name);
4333         count = l->filelen / sizeof(*in);
4334         out = (texture_t *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
4335
4336         loadmodel->data_textures = out;
4337         loadmodel->num_textures = count;
4338
4339         // parse the Q3 shader files
4340         Mod_Q3BSP_LoadShaders();
4341
4342         c = 0;
4343         for (i = 0;i < count;i++, in++, out++)
4344         {
4345                 q3shaderinfo_t *shader;
4346                 strlcpy (out->name, in->name, sizeof (out->name));
4347                 out->surfaceflags = LittleLong(in->surfaceflags);
4348                 out->supercontents = Mod_Q3BSP_SuperContentsFromNativeContents(loadmodel, LittleLong(in->contents));
4349                 shader = Mod_Q3BSP_LookupShader(out->name);
4350                 if (shader)
4351                 {
4352                         out->surfaceparms = shader->surfaceparms;
4353                         out->textureflags = shader->textureflags;
4354                         out->basematerialflags = 0;
4355                         if (shader->surfaceparms & Q3SURFACEPARM_SKY)
4356                         {
4357                                 out->basematerialflags |= MATERIALFLAG_SKY | MATERIALFLAG_NOSHADOW;
4358                                 if (shader->skyboxname[0])
4359                                 {
4360                                         // quake3 seems to append a _ to the skybox name, so this must do so as well
4361                                         dpsnprintf(loadmodel->brush.skybox, sizeof(loadmodel->brush.skybox), "%s_", shader->skyboxname);
4362                                 }
4363                         }
4364                         else if ((out->surfaceflags & Q3SURFACEFLAG_NODRAW) || shader->numlayers == 0)
4365                                 out->basematerialflags |= MATERIALFLAG_NODRAW | MATERIALFLAG_NOSHADOW;
4366                         else if (shader->surfaceparms & Q3SURFACEPARM_LAVA)
4367                                 out->basematerialflags |= MATERIALFLAG_WATER | MATERIALFLAG_LIGHTBOTHSIDES | MATERIALFLAG_FULLBRIGHT | MATERIALFLAG_NOSHADOW;
4368                         else if (shader->surfaceparms & Q3SURFACEPARM_SLIME)
4369                                 out->basematerialflags |= MATERIALFLAG_WATER | MATERIALFLAG_LIGHTBOTHSIDES | MATERIALFLAG_WATERALPHA | MATERIALFLAG_NOSHADOW;
4370                         else if (shader->surfaceparms & Q3SURFACEPARM_WATER)
4371                                 out->basematerialflags |= MATERIALFLAG_WATER | MATERIALFLAG_LIGHTBOTHSIDES | MATERIALFLAG_WATERALPHA | MATERIALFLAG_NOSHADOW;
4372                         else
4373                                 out->basematerialflags |= MATERIALFLAG_WALL;
4374                         if (shader->layers[0].alphatest)
4375                                 out->basematerialflags |= MATERIALFLAG_ALPHATEST | MATERIALFLAG_TRANSPARENT | MATERIALFLAG_NOSHADOW;
4376                         if (shader->textureflags & (Q3TEXTUREFLAG_TWOSIDED | Q3TEXTUREFLAG_AUTOSPRITE | Q3TEXTUREFLAG_AUTOSPRITE2))
4377                                 out->basematerialflags |= MATERIALFLAG_NOSHADOW;
4378                         out->customblendfunc[0] = GL_ONE;
4379                         out->customblendfunc[1] = GL_ZERO;
4380                         if (shader->numlayers > 0)
4381                         {
4382                                 out->customblendfunc[0] = shader->layers[0].blendfunc[0];
4383                                 out->customblendfunc[1] = shader->layers[0].blendfunc[1];
4384 /*
4385 Q3 shader blendfuncs actually used in the game (* = supported by DP)
4386 * additive               GL_ONE GL_ONE
4387   additive weird         GL_ONE GL_SRC_ALPHA
4388   additive weird 2       GL_ONE GL_ONE_MINUS_SRC_ALPHA
4389 * alpha                  GL_SRC_ALPHA GL_ONE_MINUS_SRC_ALPHA
4390   alpha inverse          GL_ONE_MINUS_SRC_ALPHA GL_SRC_ALPHA
4391   brighten               GL_DST_COLOR GL_ONE
4392   brighten               GL_ONE GL_SRC_COLOR
4393   brighten weird         GL_DST_COLOR GL_ONE_MINUS_DST_ALPHA
4394   brighten weird 2       GL_DST_COLOR GL_SRC_ALPHA
4395 * modulate               GL_DST_COLOR GL_ZERO
4396 * modulate               GL_ZERO GL_SRC_COLOR
4397   modulate inverse       GL_ZERO GL_ONE_MINUS_SRC_COLOR
4398   modulate inverse alpha GL_ZERO GL_SRC_ALPHA
4399   modulate weird inverse GL_ONE_MINUS_DST_COLOR GL_ZERO
4400 * modulate x2            GL_DST_COLOR GL_SRC_COLOR
4401 * no blend               GL_ONE GL_ZERO
4402   nothing                GL_ZERO GL_ONE
4403 */
4404                                 // if not opaque, figure out what blendfunc to use
4405                                 if (shader->layers[0].blendfunc[0] != GL_ONE || shader->layers[0].blendfunc[1] != GL_ZERO)
4406                                 {
4407                                         if (shader->layers[0].blendfunc[0] == GL_ONE && shader->layers[0].blendfunc[1] == GL_ONE)
4408                                                 out->basematerialflags |= MATERIALFLAG_ADD | MATERIALFLAG_BLENDED | MATERIALFLAG_TRANSPARENT | MATERIALFLAG_NOSHADOW;
4409                                         else if (shader->layers[0].blendfunc[0] == GL_SRC_ALPHA && shader->layers[0].blendfunc[1] == GL_ONE)
4410                                                 out->basematerialflags |= MATERIALFLAG_ADD | MATERIALFLAG_BLENDED | MATERIALFLAG_TRANSPARENT | MATERIALFLAG_NOSHADOW;
4411                                         else if (shader->layers[0].blendfunc[0] == GL_SRC_ALPHA && shader->layers[0].blendfunc[1] == GL_ONE_MINUS_SRC_ALPHA)
4412                                                 out->basematerialflags |= MATERIALFLAG_ALPHA | MATERIALFLAG_BLENDED | MATERIALFLAG_TRANSPARENT | MATERIALFLAG_NOSHADOW;
4413                                         else
4414                                                 out->basematerialflags |= MATERIALFLAG_CUSTOMBLEND | MATERIALFLAG_FULLBRIGHT | MATERIALFLAG_BLENDED | MATERIALFLAG_TRANSPARENT | MATERIALFLAG_NOSHADOW;
4415                                 }
4416                         }
4417                         if (!shader->lighting)
4418                                 out->basematerialflags |= MATERIALFLAG_FULLBRIGHT;
4419                         if (shader->primarylayer && cls.state != ca_dedicated)
4420                         {
4421                                 int j;
4422                                 out->numskinframes = shader->primarylayer->numframes;
4423                                 out->skinframerate = shader->primarylayer->framerate;
4424                                 for (j = 0;j < shader->primarylayer->numframes;j++)
4425                                         if (!Mod_LoadSkinFrame(&out->skinframes[j], shader->primarylayer->texturename[j], ((shader->surfaceparms & Q3SURFACEPARM_NOMIPMAPS) ? 0 : TEXF_MIPMAP) | TEXF_ALPHA | TEXF_PRECACHE | (shader->textureflags & Q3TEXTUREFLAG_NOPICMIP ? 0 : TEXF_PICMIP) | (shader->primarylayer->clampmap ? TEXF_CLAMP : 0), false, true))
4426                                                 Con_Printf("%s: could not load texture \"%s\" (frame %i) for shader \"%s\"\n", loadmodel->name, shader->primarylayer->texturename[j], j, out->name);
4427                         }
4428                 }
4429                 else
4430                 {
4431                         c++;
4432                         Con_DPrintf("%s: No shader found for texture \"%s\"\n", loadmodel->name, out->name);
4433                         out->surfaceparms = 0;
4434                         if (out->surfaceflags & Q3SURFACEFLAG_NODRAW)
4435                                 out->basematerialflags |= MATERIALFLAG_NODRAW | MATERIALFLAG_NOSHADOW;
4436                         else if (out->surfaceflags & Q3SURFACEFLAG_SKY)
4437                                 out->basematerialflags |= MATERIALFLAG_SKY | MATERIALFLAG_NOSHADOW;
4438                         else
4439                                 out->basematerialflags |= MATERIALFLAG_WALL;
4440                         // these are defaults
4441                         //if (!strncmp(out->name, "textures/skies/", 15))
4442                         //      out->surfaceparms |= Q3SURFACEPARM_SKY;
4443                         //if (!strcmp(out->name, "caulk") || !strcmp(out->name, "common/caulk") || !strcmp(out->name, "textures/common/caulk")
4444                         // || !strcmp(out->name, "nodraw") || !strcmp(out->name, "common/nodraw") || !strcmp(out->name, "textures/common/nodraw"))
4445                         //      out->surfaceparms |= Q3SURFACEPARM_NODRAW;
4446                         //if (R_TextureHasAlpha(out->skinframes[0].base))
4447                         //      out->surfaceparms |= Q3SURFACEPARM_TRANS;
4448                         if (cls.state != ca_dedicated)
4449                                 if (!Mod_LoadSkinFrame(&out->skinframes[0], out->name, TEXF_MIPMAP | TEXF_ALPHA | TEXF_PRECACHE | TEXF_PICMIP, false, true))
4450                                         Con_Printf("%s: could not load texture for missing shader \"%s\"\n", loadmodel->name, out->name);
4451                 }
4452                 // init the animation variables
4453                 out->currentframe = out;
4454                 out->currentskinframe = &out->skinframes[0];
4455         }
4456         if (c)
4457                 Con_DPrintf("%s: %i textures missing shaders\n", loadmodel->name, c);
4458 }
4459
4460 static void Mod_Q3BSP_LoadPlanes(lump_t *l)
4461 {
4462         q3dplane_t *in;
4463         mplane_t *out;
4464         int i, count;
4465
4466         in = (q3dplane_t *)(mod_base + l->fileofs);
4467         if (l->filelen % sizeof(*in))
4468                 Host_Error("Mod_Q3BSP_LoadPlanes: funny lump size in %s",loadmodel->name);
4469         count = l->filelen / sizeof(*in);
4470         out = (mplane_t *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
4471
4472         loadmodel->brush.data_planes = out;
4473         loadmodel->brush.num_planes = count;
4474
4475         for (i = 0;i < count;i++, in++, out++)
4476         {
4477                 out->normal[0] = LittleFloat(in->normal[0]);
4478                 out->normal[1] = LittleFloat(in->normal[1]);
4479                 out->normal[2] = LittleFloat(in->normal[2]);
4480                 out->dist = LittleFloat(in->dist);
4481                 PlaneClassify(out);
4482         }
4483 }
4484
4485 static void Mod_Q3BSP_LoadBrushSides(lump_t *l)
4486 {
4487         q3dbrushside_t *in;
4488         q3mbrushside_t *out;
4489         int i, n, count;
4490
4491         in = (q3dbrushside_t *)(mod_base + l->fileofs);
4492         if (l->filelen % sizeof(*in))
4493                 Host_Error("Mod_Q3BSP_LoadBrushSides: funny lump size in %s",loadmodel->name);
4494         count = l->filelen / sizeof(*in);
4495         out = (q3mbrushside_t *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
4496
4497         loadmodel->brush.data_brushsides = out;
4498         loadmodel->brush.num_brushsides = count;
4499
4500         for (i = 0;i < count;i++, in++, out++)
4501         {
4502                 n = LittleLong(in->planeindex);
4503                 if (n < 0 || n >= loadmodel->brush.num_planes)
4504                         Host_Error("Mod_Q3BSP_LoadBrushSides: invalid planeindex %i (%i planes)", n, loadmodel->brush.num_planes);
4505                 out->plane = loadmodel->brush.data_planes + n;
4506                 n = LittleLong(in->textureindex);
4507                 if (n < 0 || n >= loadmodel->num_textures)
4508                         Host_Error("Mod_Q3BSP_LoadBrushSides: invalid textureindex %i (%i textures)", n, loadmodel->num_textures);
4509                 out->texture = loadmodel->data_textures + n;
4510         }
4511 }
4512
4513 static void Mod_Q3BSP_LoadBrushes(lump_t *l)
4514 {
4515         q3dbrush_t *in;
4516         q3mbrush_t *out;
4517         int i, j, n, c, count, maxplanes;
4518         colplanef_t *planes;
4519
4520         in = (q3dbrush_t *)(mod_base + l->fileofs);
4521         if (l->filelen % sizeof(*in))
4522                 Host_Error("Mod_Q3BSP_LoadBrushes: funny lump size in %s",loadmodel->name);
4523         count = l->filelen / sizeof(*in);
4524         out = (q3mbrush_t *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
4525
4526         loadmodel->brush.data_brushes = out;
4527         loadmodel->brush.num_brushes = count;
4528
4529         maxplanes = 0;
4530         planes = NULL;
4531
4532         for (i = 0;i < count;i++, in++, out++)
4533         {
4534                 n = LittleLong(in->firstbrushside);
4535                 c = LittleLong(in->numbrushsides);
4536                 if (n < 0 || n + c > loadmodel->brush.num_brushsides)
4537                         Host_Error("Mod_Q3BSP_LoadBrushes: invalid brushside range %i : %i (%i brushsides)", n, n + c, loadmodel->brush.num_brushsides);
4538                 out->firstbrushside = loadmodel->brush.data_brushsides + n;
4539                 out->numbrushsides = c;
4540                 n = LittleLong(in->textureindex);
4541                 if (n < 0 || n >= loadmodel->num_textures)
4542                         Host_Error("Mod_Q3BSP_LoadBrushes: invalid textureindex %i (%i textures)", n, loadmodel->num_textures);
4543                 out->texture = loadmodel->data_textures + n;
4544
4545                 // make a list of mplane_t structs to construct a colbrush from
4546                 if (maxplanes < out->numbrushsides)
4547                 {
4548                         maxplanes = out->numbrushsides;
4549                         if (planes)
4550                                 Mem_Free(planes);
4551                         planes = (colplanef_t *)Mem_Alloc(tempmempool, sizeof(colplanef_t) * maxplanes);
4552                 }
4553                 for (j = 0;j < out->numbrushsides;j++)
4554                 {
4555                         VectorCopy(out->firstbrushside[j].plane->normal, planes[j].normal);
4556                         planes[j].dist = out->firstbrushside[j].plane->dist;
4557                         planes[j].q3surfaceflags = out->firstbrushside[j].texture->surfaceflags;
4558                         planes[j].texture = out->firstbrushside[j].texture;
4559                 }
4560                 // make the colbrush from the planes
4561                 out->colbrushf = Collision_NewBrushFromPlanes(loadmodel->mempool, out->numbrushsides, planes, out->texture->supercontents);
4562         }
4563         if (planes)
4564                 Mem_Free(planes);
4565 }
4566
4567 static void Mod_Q3BSP_LoadEffects(lump_t *l)
4568 {
4569         q3deffect_t *in;
4570         q3deffect_t *out;
4571         int i, n, count;
4572
4573         in = (q3deffect_t *)(mod_base + l->fileofs);
4574         if (l->filelen % sizeof(*in))
4575                 Host_Error("Mod_Q3BSP_LoadEffects: funny lump size in %s",loadmodel->name);
4576         count = l->filelen / sizeof(*in);
4577         out = (q3deffect_t *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
4578
4579         loadmodel->brushq3.data_effects = out;
4580         loadmodel->brushq3.num_effects = count;
4581
4582         for (i = 0;i < count;i++, in++, out++)
4583         {
4584                 strlcpy (out->shadername, in->shadername, sizeof (out->shadername));
4585                 n = LittleLong(in->brushindex);
4586                 if (n >= loadmodel->brush.num_brushes)
4587                 {
4588                         Con_Printf("Mod_Q3BSP_LoadEffects: invalid brushindex %i (%i brushes), setting to -1\n", n, loadmodel->brush.num_brushes);
4589                         n = -1;
4590                 }
4591                 out->brushindex = n;
4592                 out->unknown = LittleLong(in->unknown);
4593         }
4594 }
4595
4596 static void Mod_Q3BSP_LoadVertices(lump_t *l)
4597 {
4598         q3dvertex_t *in;
4599         int i, count;
4600
4601         in = (q3dvertex_t *)(mod_base + l->fileofs);
4602         if (l->filelen % sizeof(*in))
4603                 Host_Error("Mod_Q3BSP_LoadVertices: funny lump size in %s",loadmodel->name);
4604         loadmodel->brushq3.num_vertices = count = l->filelen / sizeof(*in);
4605         loadmodel->brushq3.data_vertex3f = (float *)Mem_Alloc(loadmodel->mempool, count * (sizeof(float) * (3 + 3 + 2 + 2 + 4)));
4606         loadmodel->brushq3.data_normal3f = loadmodel->brushq3.data_vertex3f + count * 3;
4607         loadmodel->brushq3.data_texcoordtexture2f = loadmodel->brushq3.data_normal3f + count * 3;
4608         loadmodel->brushq3.data_texcoordlightmap2f = loadmodel->brushq3.data_texcoordtexture2f + count * 2;
4609         loadmodel->brushq3.data_color4f = loadmodel->brushq3.data_texcoordlightmap2f + count * 2;
4610
4611         for (i = 0;i < count;i++, in++)
4612         {
4613                 loadmodel->brushq3.data_vertex3f[i * 3 + 0] = LittleFloat(in->origin3f[0]);
4614                 loadmodel->brushq3.data_vertex3f[i * 3 + 1] = LittleFloat(in->origin3f[1]);
4615                 loadmodel->brushq3.data_vertex3f[i * 3 + 2] = LittleFloat(in->origin3f[2]);
4616                 loadmodel->brushq3.data_normal3f[i * 3 + 0] = LittleFloat(in->normal3f[0]);
4617                 loadmodel->brushq3.data_normal3f[i * 3 + 1] = LittleFloat(in->normal3f[1]);
4618                 loadmodel->brushq3.data_normal3f[i * 3 + 2] = LittleFloat(in->normal3f[2]);
4619                 loadmodel->brushq3.data_texcoordtexture2f[i * 2 + 0] = LittleFloat(in->texcoord2f[0]);
4620                 loadmodel->brushq3.data_texcoordtexture2f[i * 2 + 1] = LittleFloat(in->texcoord2f[1]);
4621                 loadmodel->brushq3.data_texcoordlightmap2f[i * 2 + 0] = LittleFloat(in->lightmap2f[0]);
4622                 loadmodel->brushq3.data_texcoordlightmap2f[i * 2 + 1] = LittleFloat(in->lightmap2f[1]);
4623                 // svector/tvector are calculated later in face loading
4624                 loadmodel->brushq3.data_color4f[i * 4 + 0] = in->color4ub[0] * (1.0f / 255.0f);
4625                 loadmodel->brushq3.data_color4f[i * 4 + 1] = in->color4ub[1] * (1.0f / 255.0f);
4626                 loadmodel->brushq3.data_color4f[i * 4 + 2] = in->color4ub[2] * (1.0f / 255.0f);
4627                 loadmodel->brushq3.data_color4f[i * 4 + 3] = in->color4ub[3] * (1.0f / 255.0f);
4628         }
4629 }
4630
4631 static void Mod_Q3BSP_LoadTriangles(lump_t *l)
4632 {
4633         int *in;
4634         int *out;
4635         int i, count;
4636
4637         in = (int *)(mod_base + l->fileofs);
4638         if (l->filelen % sizeof(int[3]))
4639                 Host_Error("Mod_Q3BSP_LoadTriangles: funny lump size in %s",loadmodel->name);
4640         count = l->filelen / sizeof(*in);
4641         out = (int *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
4642
4643         loadmodel->brushq3.num_triangles = count / 3;
4644         loadmodel->brushq3.data_element3i = out;
4645
4646         for (i = 0;i < count;i++, in++, out++)
4647         {
4648                 *out = LittleLong(*in);
4649                 if (*out < 0 || *out >= loadmodel->brushq3.num_vertices)
4650                 {
4651                         Con_Printf("Mod_Q3BSP_LoadTriangles: invalid vertexindex %i (%i vertices), setting to 0\n", *out, loadmodel->brushq3.num_vertices);
4652                         *out = 0;
4653                 }
4654         }
4655 }
4656
4657 static void Mod_Q3BSP_LoadLightmaps(lump_t *l)
4658 {
4659         q3dlightmap_t *in;
4660         rtexture_t **out;
4661         int i, count;
4662         unsigned char *c;
4663
4664         if (!l->filelen)
4665                 return;
4666         in = (q3dlightmap_t *)(mod_base + l->fileofs);
4667         if (l->filelen % sizeof(*in))
4668                 Host_Error("Mod_Q3BSP_LoadLightmaps: funny lump size in %s",loadmodel->name);
4669         count = l->filelen / sizeof(*in);
4670         out = (rtexture_t **)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
4671
4672         loadmodel->brushq3.data_lightmaps = out;
4673         loadmodel->brushq3.num_lightmaps = count;
4674
4675         // deluxemapped q3bsp files have an even number of lightmaps, and surfaces
4676         // always index even numbered ones (0, 2, 4, ...), the odd numbered
4677         // lightmaps are the deluxemaps (light direction textures), so if we
4678         // encounter any odd numbered lightmaps it is not a deluxemapped bsp, it
4679         // is also not a deluxemapped bsp if it has an odd number of lightmaps or
4680         // less than 2
4681         loadmodel->brushq3.deluxemapping = true;
4682         loadmodel->brushq3.deluxemapping_modelspace = true;
4683         if (count < 2 || (count & 1))
4684                 loadmodel->brushq3.deluxemapping = false;
4685
4686         // q3map2 sometimes (or always?) makes a second blank lightmap for no
4687         // reason when only one lightmap is used, which can throw off the
4688         // deluxemapping detection method, so check 2-lightmap bsp's specifically
4689         // to see if the second lightmap is blank, if so it is not deluxemapped.
4690         if (count == 2)
4691         {
4692                 c = in[count - 1].rgb;
4693                 for (i = 0;i < 128*128*3;i++)
4694                         if (c[i])
4695                                 break;
4696                 if (i == 128*128*3)
4697                 {
4698                         // all pixels in the unused lightmap were black...
4699                         loadmodel->brushq3.deluxemapping = false;
4700                 }
4701         }
4702
4703         // further deluxemapping detection is done in Mod_Q3BSP_LoadFaces
4704
4705         for (i = 0;i < count;i++, in++, out++)
4706                 *out = R_LoadTexture2D(loadmodel->texturepool, va("lightmap%04i", i), 128, 128, in->rgb, TEXTYPE_RGB, TEXF_FORCELINEAR | TEXF_PRECACHE, NULL);
4707 }
4708
4709 static void Mod_Q3BSP_LoadFaces(lump_t *l)
4710 {
4711         q3dface_t *in, *oldin;
4712         msurface_t *out, *oldout;
4713         int i, oldi, j, n, count, invalidelements, patchsize[2], finalwidth, finalheight, xtess, ytess, finalvertices, finaltriangles, firstvertex, firstelement, type, oldnumtriangles, oldnumtriangles2, meshvertices, meshtriangles, numvertices, numtriangles;
4714         //int *originalelement3i;
4715         //int *originalneighbor3i;
4716         float *originalvertex3f;
4717         //float *originalsvector3f;
4718         //float *originaltvector3f;
4719         float *originalnormal3f;
4720         float *originalcolor4f;
4721         float *originaltexcoordtexture2f;
4722         float *originaltexcoordlightmap2f;
4723         float *v;
4724
4725         in = (q3dface_t *)(mod_base + l->fileofs);
4726         if (l->filelen % sizeof(*in))
4727                 Host_Error("Mod_Q3BSP_LoadFaces: funny lump size in %s",loadmodel->name);
4728         count = l->filelen / sizeof(*in);
4729         out = (msurface_t *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
4730
4731         loadmodel->data_surfaces = out;
4732         loadmodel->num_surfaces = count;
4733
4734         // now that we have surfaces to look at, see if any of them index an odd numbered lightmap, if so this is not a deluxemapped bsp file
4735         if (loadmodel->brushq3.deluxemapping)
4736         {
4737                 for (i = 0;i < count;i++)
4738                 {
4739                         n = LittleLong(in[i].lightmapindex);
4740                         if (n >= 0 && ((n & 1) || n + 1 >= loadmodel->brushq3.num_lightmaps))
4741                         {
4742                                 loadmodel->brushq3.deluxemapping = false;
4743                                 break;
4744                         }
4745                 }
4746         }
4747         Con_DPrintf("%s is %sdeluxemapped\n", loadmodel->name, loadmodel->brushq3.deluxemapping ? "" : "not ");
4748
4749         i = 0;
4750         oldi = i;
4751         oldin = in;
4752         oldout = out;
4753         meshvertices = 0;
4754         meshtriangles = 0;
4755         for (;i < count;i++, in++, out++)
4756         {
4757                 // check face type first
4758                 type = LittleLong(in->type);
4759                 if (type != Q3FACETYPE_POLYGON
4760                  && type != Q3FACETYPE_PATCH
4761                  && type != Q3FACETYPE_MESH
4762                  && type != Q3FACETYPE_FLARE)
4763                 {
4764                         Con_DPrintf("Mod_Q3BSP_LoadFaces: face #%i: unknown face type %i\n", i, type);
4765                         continue;
4766                 }
4767
4768                 n = LittleLong(in->textureindex);
4769                 if (n < 0 || n >= loadmodel->num_textures)
4770                 {
4771                         Con_DPrintf("Mod_Q3BSP_LoadFaces: face #%i: invalid textureindex %i (%i textures)\n", i, n, loadmodel->num_textures);
4772                         continue;
4773                 }
4774                 out->texture = loadmodel->data_textures + n;
4775                 n = LittleLong(in->effectindex);
4776                 if (n < -1 || n >= loadmodel->brushq3.num_effects)
4777                 {
4778                         if (developer.integer >= 100)
4779                                 Con_Printf("Mod_Q3BSP_LoadFaces: face #%i (texture \"%s\"): invalid effectindex %i (%i effects)\n", i, out->texture->name, n, loadmodel->brushq3.num_effects);
4780                         n = -1;
4781                 }
4782                 if (n == -1)
4783                         out->effect = NULL;
4784                 else
4785                         out->effect = loadmodel->brushq3.data_effects + n;
4786                 n = LittleLong(in->lightmapindex);
4787                 if (n >= loadmodel->brushq3.num_lightmaps)
4788                 {
4789                         Con_Printf("Mod_Q3BSP_LoadFaces: face #%i (texture \"%s\"): invalid lightmapindex %i (%i lightmaps)\n", i, out->texture->name, n, loadmodel->brushq3.num_lightmaps);
4790                         n = -1;
4791                 }
4792                 else if (n < 0)
4793                         n = -1;
4794                 if (n == -1)
4795                 {
4796                         out->lightmaptexture = NULL;
4797                         out->deluxemaptexture = r_texture_blanknormalmap;
4798                 }
4799                 else
4800                 {
4801                         out->lightmaptexture = loadmodel->brushq3.data_lightmaps[n];
4802                         if (loadmodel->brushq3.deluxemapping)
4803                                 out->deluxemaptexture = loadmodel->brushq3.data_lightmaps[n+1];
4804                         else
4805                                 out->deluxemaptexture = r_texture_blanknormalmap;
4806                 }
4807
4808                 firstvertex = LittleLong(in->firstvertex);
4809                 numvertices = LittleLong(in->numvertices);
4810                 firstelement = LittleLong(in->firstelement);
4811                 numtriangles = LittleLong(in->numelements) / 3;
4812                 if (numtriangles * 3 != LittleLong(in->numelements))
4813                 {
4814                         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));
4815                         continue;
4816                 }
4817                 if (firstvertex < 0 || firstvertex + numvertices > loadmodel->brushq3.num_vertices)
4818                 {
4819                         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);
4820                         continue;
4821                 }
4822                 if (firstelement < 0 || firstelement + numtriangles * 3 > loadmodel->brushq3.num_triangles * 3)
4823                 {
4824                         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);
4825                         continue;
4826                 }
4827                 switch(type)
4828                 {
4829                 case Q3FACETYPE_POLYGON:
4830                 case Q3FACETYPE_MESH:
4831                         // no processing necessary
4832                         break;
4833                 case Q3FACETYPE_PATCH:
4834                         patchsize[0] = LittleLong(in->specific.patch.patchsize[0]);
4835                         patchsize[1] = LittleLong(in->specific.patch.patchsize[1]);
4836                         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))
4837                         {
4838                                 Con_Printf("Mod_Q3BSP_LoadFaces: face #%i (texture \"%s\"): invalid patchsize %ix%i\n", i, out->texture->name, patchsize[0], patchsize[1]);
4839                                 continue;
4840                         }
4841                         originalvertex3f = loadmodel->brushq3.data_vertex3f + firstvertex * 3;
4842                         // convert patch to Q3FACETYPE_MESH
4843                         xtess = Q3PatchTesselationOnX(patchsize[0], patchsize[1], 3, originalvertex3f, r_subdivisions_tolerance.value);
4844                         ytess = Q3PatchTesselationOnY(patchsize[0], patchsize[1], 3, originalvertex3f, r_subdivisions_tolerance.value);
4845                         // bound to user settings
4846                         xtess = bound(r_subdivisions_mintess.integer, xtess, r_subdivisions_maxtess.integer);
4847                         ytess = bound(r_subdivisions_mintess.integer, ytess, r_subdivisions_maxtess.integer);
4848                         // bound to sanity settings
4849                         xtess = bound(1, xtess, 1024);
4850                         ytess = bound(1, ytess, 1024);
4851                         // bound to user limit on vertices
4852                         while ((xtess > 1 || ytess > 1) && (((patchsize[0] - 1) * xtess) + 1) * (((patchsize[1] - 1) * ytess) + 1) > min(r_subdivisions_maxvertices.integer, 262144))
4853                         {
4854                                 if (xtess > ytess)
4855                                         xtess--;
4856                                 else
4857                                         ytess--;
4858                         }
4859                         finalwidth = ((patchsize[0] - 1) * xtess) + 1;
4860                         finalheight = ((patchsize[1] - 1) * ytess) + 1;
4861                         numvertices = finalwidth * finalheight;
4862                         numtriangles = (finalwidth - 1) * (finalheight - 1) * 2;
4863                         break;
4864                 case Q3FACETYPE_FLARE:
4865                         if (developer.integer >= 100)
4866                                 Con_Printf("Mod_Q3BSP_LoadFaces: face #%i (texture \"%s\"): Q3FACETYPE_FLARE not supported (yet)\n", i, out->texture->name);
4867                         // don't render it
4868                         continue;
4869                 }
4870                 out->num_vertices = numvertices;
4871                 out->num_triangles = numtriangles;
4872                 meshvertices += out->num_vertices;
4873                 meshtriangles += out->num_triangles;
4874         }
4875
4876         i = oldi;
4877         in = oldin;
4878         out = oldout;
4879         Mod_AllocSurfMesh(loadmodel->mempool, meshvertices, meshtriangles, false, true, false);
4880         meshvertices = 0;
4881         meshtriangles = 0;
4882         for (;i < count && meshvertices + out->num_vertices <= loadmodel->surfmesh.num_vertices;i++, in++, out++)
4883         {
4884                 if (out->num_vertices < 3 || out->num_triangles < 1)
4885                         continue;
4886
4887                 type = LittleLong(in->type);
4888                 firstvertex = LittleLong(in->firstvertex);
4889                 firstelement = LittleLong(in->firstelement);
4890                 out->num_firstvertex = meshvertices;
4891                 out->num_firsttriangle = meshtriangles;
4892                 switch(type)
4893                 {
4894                 case Q3FACETYPE_POLYGON:
4895                 case Q3FACETYPE_MESH:
4896                         // no processing necessary
4897                         for (j = 0;j < out->num_vertices;j++)
4898                         {
4899                                 (loadmodel->surfmesh.data_vertex3f + 3 * out->num_firstvertex)[j * 3 + 0] = loadmodel->brushq3.data_vertex3f[(firstvertex + j) * 3 + 0];
4900                                 (loadmodel->surfmesh.data_vertex3f + 3 * out->num_firstvertex)[j * 3 + 1] = loadmodel->brushq3.data_vertex3f[(firstvertex + j) * 3 + 1];
4901                                 (loadmodel->surfmesh.data_vertex3f + 3 * out->num_firstvertex)[j * 3 + 2] = loadmodel->brushq3.data_vertex3f[(firstvertex + j) * 3 + 2];
4902                                 (loadmodel->surfmesh.data_normal3f + 3 * out->num_firstvertex)[j * 3 + 0] = loadmodel->brushq3.data_normal3f[(firstvertex + j) * 3 + 0];
4903                                 (loadmodel->surfmesh.data_normal3f + 3 * out->num_firstvertex)[j * 3 + 1] = loadmodel->brushq3.data_normal3f[(firstvertex + j) * 3 + 1];
4904                                 (loadmodel->surfmesh.data_normal3f + 3 * out->num_firstvertex)[j * 3 + 2] = loadmodel->brushq3.data_normal3f[(firstvertex + j) * 3 + 2];
4905                                 (loadmodel->surfmesh.data_texcoordtexture2f + 2 * out->num_firstvertex)[j * 2 + 0] = loadmodel->brushq3.data_texcoordtexture2f[(firstvertex + j) * 2 + 0];
4906                                 (loadmodel->surfmesh.data_texcoordtexture2f + 2 * out->num_firstvertex)[j * 2 + 1] = loadmodel->brushq3.data_texcoordtexture2f[(firstvertex + j) * 2 + 1];
4907                                 (loadmodel->surfmesh.data_texcoordlightmap2f + 2 * out->num_firstvertex)[j * 2 + 0] = loadmodel->brushq3.data_texcoordlightmap2f[(firstvertex + j) * 2 + 0];
4908                                 (loadmodel->surfmesh.data_texcoordlightmap2f + 2 * out->num_firstvertex)[j * 2 + 1] = loadmodel->brushq3.data_texcoordlightmap2f[(firstvertex + j) * 2 + 1];
4909                                 (loadmodel->surfmesh.data_lightmapcolor4f + 4 * out->num_firstvertex)[j * 4 + 0] = loadmodel->brushq3.data_color4f[(firstvertex + j) * 4 + 0];
4910                                 (loadmodel->surfmesh.data_lightmapcolor4f + 4 * out->num_firstvertex)[j * 4 + 1] = loadmodel->brushq3.data_color4f[(firstvertex + j) * 4 + 1];
4911                                 (loadmodel->surfmesh.data_lightmapcolor4f + 4 * out->num_firstvertex)[j * 4 + 2] = loadmodel->brushq3.data_color4f[(firstvertex + j) * 4 + 2];
4912                                 (loadmodel->surfmesh.data_lightmapcolor4f + 4 * out->num_firstvertex)[j * 4 + 3] = loadmodel->brushq3.data_color4f[(firstvertex + j) * 4 + 3];
4913                         }
4914                         for (j = 0;j < out->num_triangles*3;j++)
4915                                 (loadmodel->surfmesh.data_element3i + 3 * out->num_firsttriangle)[j] = loadmodel->brushq3.data_element3i[firstelement + j] + out->num_firstvertex;
4916                         break;
4917                 case Q3FACETYPE_PATCH:
4918                         patchsize[0] = LittleLong(in->specific.patch.patchsize[0]);
4919                         patchsize[1] = LittleLong(in->specific.patch.patchsize[1]);
4920                         originalvertex3f = loadmodel->brushq3.data_vertex3f + firstvertex * 3;
4921                         originalnormal3f = loadmodel->brushq3.data_normal3f + firstvertex * 3;
4922                         originaltexcoordtexture2f = loadmodel->brushq3.data_texcoordtexture2f + firstvertex * 2;
4923                         originaltexcoordlightmap2f = loadmodel->brushq3.data_texcoordlightmap2f + firstvertex * 2;
4924                         originalcolor4f = loadmodel->brushq3.data_color4f + firstvertex * 4;
4925                         // convert patch to Q3FACETYPE_MESH
4926                         xtess = Q3PatchTesselationOnX(patchsize[0], patchsize[1], 3, originalvertex3f, r_subdivisions_tolerance.value);
4927                         ytess = Q3PatchTesselationOnY(patchsize[0], patchsize[1], 3, originalvertex3f, r_subdivisions_tolerance.value);
4928                         // bound to user settings
4929                         xtess = bound(r_subdivisions_mintess.integer, xtess, r_subdivisions_maxtess.integer);
4930                         ytess = bound(r_subdivisions_mintess.integer, ytess, r_subdivisions_maxtess.integer);
4931                         // bound to sanity settings
4932                         xtess = bound(1, xtess, 1024);
4933                         ytess = bound(1, ytess, 1024);
4934                         // bound to user limit on vertices
4935                         while ((xtess > 1 || ytess > 1) && (((patchsize[0] - 1) * xtess) + 1) * (((patchsize[1] - 1) * ytess) + 1) > min(r_subdivisions_maxvertices.integer, 262144))
4936                         {
4937                                 if (xtess > ytess)
4938                                         xtess--;
4939                                 else
4940                                         ytess--;
4941                         }
4942                         finalwidth = ((patchsize[0] - 1) * xtess) + 1;
4943                         finalheight = ((patchsize[1] - 1) * ytess) + 1;
4944                         finalvertices = finalwidth * finalheight;
4945                         finaltriangles = (finalwidth - 1) * (finalheight - 1) * 2;
4946                         type = Q3FACETYPE_MESH;
4947                         // generate geometry
4948                         // (note: normals are skipped because they get recalculated)
4949                         Q3PatchTesselateFloat(3, sizeof(float[3]), (loadmodel->surfmesh.data_vertex3f + 3 * out->num_firstvertex), patchsize[0], patchsize[1], sizeof(float[3]), originalvertex3f, xtess, ytess);
4950                         Q3PatchTesselateFloat(3, sizeof(float[3]), (loadmodel->surfmesh.data_normal3f + 3 * out->num_firstvertex), patchsize[0], patchsize[1], sizeof(float[3]), originalnormal3f, xtess, ytess);
4951                         Q3PatchTesselateFloat(2, sizeof(float[2]), (loadmodel->surfmesh.data_texcoordtexture2f + 2 * out->num_firstvertex), patchsize[0], patchsize[1], sizeof(float[2]), originaltexcoordtexture2f, xtess, ytess);
4952                         Q3PatchTesselateFloat(2, sizeof(float[2]), (loadmodel->surfmesh.data_texcoordlightmap2f + 2 * out->num_firstvertex), patchsize[0], patchsize[1], sizeof(float[2]), originaltexcoordlightmap2f, xtess, ytess);
4953                         Q3PatchTesselateFloat(4, sizeof(float[4]), (loadmodel->surfmesh.data_lightmapcolor4f + 4 * out->num_firstvertex), patchsize[0], patchsize[1], sizeof(float[4]), originalcolor4f, xtess, ytess);
4954                         Q3PatchTriangleElements((loadmodel->surfmesh.data_element3i + 3 * out->num_firsttriangle), finalwidth, finalheight, out->num_firstvertex);
4955                         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);
4956                         if (developer.integer >= 100)
4957                         {
4958                                 if (out->num_triangles < finaltriangles)
4959                                         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);
4960                                 else
4961                                         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);
4962                         }
4963                         // q3map does not put in collision brushes for curves... ugh
4964                         // build the lower quality collision geometry
4965                         xtess = Q3PatchTesselationOnX(patchsize[0], patchsize[1], 3, originalvertex3f, r_subdivisions_collision_tolerance.value);
4966                         ytess = Q3PatchTesselationOnY(patchsize[0], patchsize[1], 3, originalvertex3f, r_subdivisions_collision_tolerance.value);
4967                         // bound to user settings
4968                         xtess = bound(r_subdivisions_collision_mintess.integer, xtess, r_subdivisions_collision_maxtess.integer);
4969                         ytess = bound(r_subdivisions_collision_mintess.integer, ytess, r_subdivisions_collision_maxtess.integer);
4970                         // bound to sanity settings
4971                         xtess = bound(1, xtess, 1024);
4972                         ytess = bound(1, ytess, 1024);
4973                         // bound to user limit on vertices
4974                         while ((xtess > 1 || ytess > 1) && (((patchsize[0] - 1) * xtess) + 1) * (((patchsize[1] - 1) * ytess) + 1) > min(r_subdivisions_collision_maxvertices.integer, 262144))
4975                         {
4976                                 if (xtess > ytess)
4977                                         xtess--;
4978                                 else
4979                                         ytess--;
4980                         }
4981                         finalwidth = ((patchsize[0] - 1) * xtess) + 1;
4982                         finalheight = ((patchsize[1] - 1) * ytess) + 1;
4983                         finalvertices = finalwidth * finalheight;
4984                         finaltriangles = (finalwidth - 1) * (finalheight - 1) * 2;
4985
4986                         out->data_collisionvertex3f = (float *)Mem_Alloc(loadmodel->mempool, sizeof(float[3]) * finalvertices);
4987                         out->data_collisionelement3i = (int *)Mem_Alloc(loadmodel->mempool, sizeof(int[3]) * finaltriangles);
4988                         out->num_collisionvertices = finalvertices;
4989                         out->num_collisiontriangles = finaltriangles;
4990                         Q3PatchTesselateFloat(3, sizeof(float[3]), out->data_collisionvertex3f, patchsize[0], patchsize[1], sizeof(float[3]), originalvertex3f, xtess, ytess);
4991                         Q3PatchTriangleElements(out->data_collisionelement3i, finalwidth, finalheight, 0);
4992
4993                         //Mod_SnapVertices(3, out->num_vertices, (loadmodel->surfmesh.data_vertex3f + 3 * out->num_firstvertex), 0.25);
4994                         Mod_SnapVertices(3, out->num_collisionvertices, out->data_collisionvertex3f, 1);
4995
4996                         oldnumtriangles = out->num_triangles;
4997                         oldnumtriangles2 = out->num_collisiontriangles;
4998                         out->num_collisiontriangles = Mod_RemoveDegenerateTriangles(out->num_collisiontriangles, out->data_collisionelement3i, out->data_collisionelement3i, out->data_collisionvertex3f);
4999                         if (developer.integer >= 100)
5000                                 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);
5001                         break;
5002                 default:
5003                         break;
5004                 }
5005                 meshvertices += out->num_vertices;
5006                 meshtriangles += out->num_triangles;
5007                 for (j = 0, invalidelements = 0;j < out->num_triangles * 3;j++)
5008                         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)
5009                                 invalidelements++;
5010                 if (invalidelements)
5011                 {
5012                         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);
5013                         for (j = 0;j < out->num_triangles * 3;j++)
5014                         {
5015                                 Con_Printf(" %i", (loadmodel->surfmesh.data_element3i + 3 * out->num_firsttriangle)[j] - out->num_firstvertex);
5016                                 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)
5017                                         (loadmodel->surfmesh.data_element3i + 3 * out->num_firsttriangle)[j] = out->num_firstvertex;
5018                         }
5019                         Con_Print("\n");
5020                 }
5021                 // calculate a bounding box
5022                 VectorClear(out->mins);
5023                 VectorClear(out->maxs);
5024                 if (out->num_vertices)
5025                 {
5026                         VectorCopy((loadmodel->surfmesh.data_vertex3f + 3 * out->num_firstvertex), out->mins);
5027                         VectorCopy((loadmodel->surfmesh.data_vertex3f + 3 * out->num_firstvertex), out->maxs);
5028                         for (j = 1, v = (loadmodel->surfmesh.data_vertex3f + 3 * out->num_firstvertex) + 3;j < out->num_vertices;j++, v += 3)
5029                         {
5030                                 out->mins[0] = min(out->mins[0], v[0]);
5031                                 out->maxs[0] = max(out->maxs[0], v[0]);
5032                                 out->mins[1] = min(out->mins[1], v[1]);
5033                                 out->maxs[1] = max(out->maxs[1], v[1]);
5034                                 out->mins[2] = min(out->mins[2], v[2]);
5035                                 out->maxs[2] = max(out->maxs[2], v[2]);
5036                         }
5037                         out->mins[0] -= 1.0f;
5038                         out->mins[1] -= 1.0f;
5039                         out->mins[2] -= 1.0f;
5040                         out->maxs[0] += 1.0f;
5041                         out->maxs[1] += 1.0f;
5042                         out->maxs[2] += 1.0f;
5043                 }
5044                 // set lightmap styles for consistency with q1bsp
5045                 //out->lightmapinfo->styles[0] = 0;
5046                 //out->lightmapinfo->styles[1] = 255;
5047                 //out->lightmapinfo->styles[2] = 255;
5048                 //out->lightmapinfo->styles[3] = 255;
5049         }
5050
5051         // for per pixel lighting
5052         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);
5053
5054         // free the no longer needed vertex data
5055         loadmodel->brushq3.num_vertices = 0;
5056         if (loadmodel->brushq3.data_vertex3f)
5057                 Mem_Free(loadmodel->brushq3.data_vertex3f);
5058         loadmodel->brushq3.data_vertex3f = NULL;
5059         loadmodel->brushq3.data_normal3f = NULL;
5060         loadmodel->brushq3.data_texcoordtexture2f = NULL;
5061         loadmodel->brushq3.data_texcoordlightmap2f = NULL;
5062         loadmodel->brushq3.data_color4f = NULL;
5063         // free the no longer needed triangle data
5064         loadmodel->brushq3.num_triangles = 0;
5065         if (loadmodel->brushq3.data_element3i)
5066                 Mem_Free(loadmodel->brushq3.data_element3i);
5067         loadmodel->brushq3.data_element3i = NULL;
5068 }
5069
5070 static void Mod_Q3BSP_LoadModels(lump_t *l)
5071 {
5072         q3dmodel_t *in;
5073         q3dmodel_t *out;
5074         int i, j, n, c, count;
5075
5076         in = (q3dmodel_t *)(mod_base + l->fileofs);
5077         if (l->filelen % sizeof(*in))
5078                 Host_Error("Mod_Q3BSP_LoadModels: funny lump size in %s",loadmodel->name);
5079         count = l->filelen / sizeof(*in);
5080         out = (q3dmodel_t *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
5081
5082         loadmodel->brushq3.data_models = out;
5083         loadmodel->brushq3.num_models = count;
5084
5085         for (i = 0;i < count;i++, in++, out++)
5086         {
5087                 for (j = 0;j < 3;j++)
5088                 {
5089                         out->mins[j] = LittleFloat(in->mins[j]);
5090                         out->maxs[j] = LittleFloat(in->maxs[j]);
5091                 }
5092                 n = LittleLong(in->firstface);
5093                 c = LittleLong(in->numfaces);
5094                 if (n < 0 || n + c > loadmodel->num_surfaces)
5095                         Host_Error("Mod_Q3BSP_LoadModels: invalid face range %i : %i (%i faces)", n, n + c, loadmodel->num_surfaces);
5096                 out->firstface = n;
5097                 out->numfaces = c;
5098                 n = LittleLong(in->firstbrush);
5099                 c = LittleLong(in->numbrushes);
5100                 if (n < 0 || n + c > loadmodel->brush.num_brushes)
5101                         Host_Error("Mod_Q3BSP_LoadModels: invalid brush range %i : %i (%i brushes)", n, n + c, loadmodel->brush.num_brushes);
5102                 out->firstbrush = n;
5103                 out->numbrushes = c;
5104         }
5105 }
5106
5107 static void Mod_Q3BSP_LoadLeafBrushes(lump_t *l)
5108 {
5109         int *in;
5110         int *out;
5111         int i, n, count;
5112
5113         in = (int *)(mod_base + l->fileofs);
5114         if (l->filelen % sizeof(*in))
5115                 Host_Error("Mod_Q3BSP_LoadLeafBrushes: funny lump size in %s",loadmodel->name);
5116         count = l->filelen / sizeof(*in);
5117         out = (int *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
5118
5119         loadmodel->brush.data_leafbrushes = out;
5120         loadmodel->brush.num_leafbrushes = count;
5121
5122         for (i = 0;i < count;i++, in++, out++)
5123         {
5124                 n = LittleLong(*in);
5125                 if (n < 0 || n >= loadmodel->brush.num_brushes)
5126                         Host_Error("Mod_Q3BSP_LoadLeafBrushes: invalid brush index %i (%i brushes)", n, loadmodel->brush.num_brushes);
5127                 *out = n;
5128         }
5129 }
5130
5131 static void Mod_Q3BSP_LoadLeafFaces(lump_t *l)
5132 {
5133         int *in;
5134         int *out;
5135         int i, n, count;
5136
5137         in = (int *)(mod_base + l->fileofs);
5138         if (l->filelen % sizeof(*in))
5139                 Host_Error("Mod_Q3BSP_LoadLeafFaces: funny lump size in %s",loadmodel->name);
5140         count = l->filelen / sizeof(*in);
5141         out = (int *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
5142
5143         loadmodel->brush.data_leafsurfaces = out;
5144         loadmodel->brush.num_leafsurfaces = count;
5145
5146         for (i = 0;i < count;i++, in++, out++)
5147         {
5148                 n = LittleLong(*in);
5149                 if (n < 0 || n >= loadmodel->num_surfaces)
5150                         Host_Error("Mod_Q3BSP_LoadLeafFaces: invalid face index %i (%i faces)", n, loadmodel->num_surfaces);
5151                 *out = n;
5152         }
5153 }
5154
5155 static void Mod_Q3BSP_LoadLeafs(lump_t *l)
5156 {
5157         q3dleaf_t *in;
5158         mleaf_t *out;
5159         int i, j, n, c, count;
5160
5161         in = (q3dleaf_t *)(mod_base + l->fileofs);
5162         if (l->filelen % sizeof(*in))
5163                 Host_Error("Mod_Q3BSP_LoadLeafs: funny lump size in %s",loadmodel->name);
5164         count = l->filelen / sizeof(*in);
5165         out = (mleaf_t *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
5166
5167         loadmodel->brush.data_leafs = out;
5168         loadmodel->brush.num_leafs = count;
5169
5170         for (i = 0;i < count;i++, in++, out++)
5171         {
5172                 out->parent = NULL;
5173                 out->plane = NULL;
5174                 out->clusterindex = LittleLong(in->clusterindex);
5175                 out->areaindex = LittleLong(in->areaindex);
5176                 for (j = 0;j < 3;j++)
5177                 {
5178                         // yes the mins/maxs are ints
5179                         out->mins[j] = LittleLong(in->mins[j]) - 1;
5180                         out->maxs[j] = LittleLong(in->maxs[j]) + 1;
5181                 }
5182                 n = LittleLong(in->firstleafface);
5183                 c = LittleLong(in->numleaffaces);
5184                 if (n < 0 || n + c > loadmodel->brush.num_leafsurfaces)
5185                         Host_Error("Mod_Q3BSP_LoadLeafs: invalid leafsurface range %i : %i (%i leafsurfaces)", n, n + c, loadmodel->brush.num_leafsurfaces);
5186                 out->firstleafsurface = loadmodel->brush.data_leafsurfaces + n;
5187                 out->numleafsurfaces = c;
5188                 n = LittleLong(in->firstleafbrush);
5189                 c = LittleLong(in->numleafbrushes);
5190                 if (n < 0 || n + c > loadmodel->brush.num_leafbrushes)
5191                         Host_Error("Mod_Q3BSP_LoadLeafs: invalid leafbrush range %i : %i (%i leafbrushes)", n, n + c, loadmodel->brush.num_leafbrushes);
5192                 out->firstleafbrush = loadmodel->brush.data_leafbrushes + n;
5193                 out->numleafbrushes = c;
5194         }
5195 }
5196
5197 static void Mod_Q3BSP_LoadNodes(lump_t *l)
5198 {
5199         q3dnode_t *in;
5200         mnode_t *out;
5201         int i, j, n, count;
5202
5203         in = (q3dnode_t *)(mod_base + l->fileofs);
5204         if (l->filelen % sizeof(*in))
5205                 Host_Error("Mod_Q3BSP_LoadNodes: funny lump size in %s",loadmodel->name);
5206         count = l->filelen / sizeof(*in);
5207         out = (mnode_t *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
5208
5209         loadmodel->brush.data_nodes = out;
5210         loadmodel->brush.num_nodes = count;
5211
5212         for (i = 0;i < count;i++, in++, out++)
5213         {
5214                 out->parent = NULL;
5215                 n = LittleLong(in->planeindex);
5216                 if (n < 0 || n >= loadmodel->brush.num_planes)
5217                         Host_Error("Mod_Q3BSP_LoadNodes: invalid planeindex %i (%i planes)", n, loadmodel->brush.num_planes);
5218                 out->plane = loadmodel->brush.data_planes + n;
5219                 for (j = 0;j < 2;j++)
5220                 {
5221                         n = LittleLong(in->childrenindex[j]);
5222                         if (n >= 0)
5223                         {
5224                                 if (n >= loadmodel->brush.num_nodes)
5225                                         Host_Error("Mod_Q3BSP_LoadNodes: invalid child node index %i (%i nodes)", n, loadmodel->brush.num_nodes);
5226                                 out->children[j] = loadmodel->brush.data_nodes + n;
5227                         }
5228                         else
5229                         {
5230                                 n = -1 - n;
5231                                 if (n >= loadmodel->brush.num_leafs)
5232                                         Host_Error("Mod_Q3BSP_LoadNodes: invalid child leaf index %i (%i leafs)", n, loadmodel->brush.num_leafs);
5233                                 out->children[j] = (mnode_t *)(loadmodel->brush.data_leafs + n);
5234                         }
5235                 }
5236                 for (j = 0;j < 3;j++)
5237                 {
5238                         // yes the mins/maxs are ints
5239                         out->mins[j] = LittleLong(in->mins[j]) - 1;
5240                         out->maxs[j] = LittleLong(in->maxs[j]) + 1;
5241                 }
5242         }
5243
5244         // set the parent pointers
5245         Mod_Q1BSP_LoadNodes_RecursiveSetParent(loadmodel->brush.data_nodes, NULL);
5246 }
5247
5248 static void Mod_Q3BSP_LoadLightGrid(lump_t *l)
5249 {
5250         q3dlightgrid_t *in;
5251         q3dlightgrid_t *out;
5252         int count;
5253
5254         in = (q3dlightgrid_t *)(mod_base + l->fileofs);
5255         if (l->filelen % sizeof(*in))
5256                 Host_Error("Mod_Q3BSP_LoadLightGrid: funny lump size in %s",loadmodel->name);
5257         loadmodel->brushq3.num_lightgrid_scale[0] = 1.0f / loadmodel->brushq3.num_lightgrid_cellsize[0];
5258         loadmodel->brushq3.num_lightgrid_scale[1] = 1.0f / loadmodel->brushq3.num_lightgrid_cellsize[1];
5259         loadmodel->brushq3.num_lightgrid_scale[2] = 1.0f / loadmodel->brushq3.num_lightgrid_cellsize[2];
5260         loadmodel->brushq3.num_lightgrid_imins[0] = (int)ceil(loadmodel->brushq3.data_models->mins[0] * loadmodel->brushq3.num_lightgrid_scale[0]);
5261         loadmodel->brushq3.num_lightgrid_imins[1] = (int)ceil(loadmodel->brushq3.data_models->mins[1] * loadmodel->brushq3.num_lightgrid_scale[1]);
5262         loadmodel->brushq3.num_lightgrid_imins[2] = (int)ceil(loadmodel->brushq3.data_models->mins[2] * loadmodel->brushq3.num_lightgrid_scale[2]);
5263         loadmodel->brushq3.num_lightgrid_imaxs[0] = (int)floor(loadmodel->brushq3.data_models->maxs[0] * loadmodel->brushq3.num_lightgrid_scale[0]);
5264         loadmodel->brushq3.num_lightgrid_imaxs[1] = (int)floor(loadmodel->brushq3.data_models->maxs[1] * loadmodel->brushq3.num_lightgrid_scale[1]);
5265         loadmodel->brushq3.num_lightgrid_imaxs[2] = (int)floor(loadmodel->brushq3.data_models->maxs[2] * loadmodel->brushq3.num_lightgrid_scale[2]);
5266         loadmodel->brushq3.num_lightgrid_isize[0] = loadmodel->brushq3.num_lightgrid_imaxs[0] - loadmodel->brushq3.num_lightgrid_imins[0] + 1;
5267         loadmodel->brushq3.num_lightgrid_isize[1] = loadmodel->brushq3.num_lightgrid_imaxs[1] - loadmodel->brushq3.num_lightgrid_imins[1] + 1;
5268         loadmodel->brushq3.num_lightgrid_isize[2] = loadmodel->brushq3.num_lightgrid_imaxs[2] - loadmodel->brushq3.num_lightgrid_imins[2] + 1;
5269         count = loadmodel->brushq3.num_lightgrid_isize[0] * loadmodel->brushq3.num_lightgrid_isize[1] * loadmodel->brushq3.num_lightgrid_isize[2];
5270         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]);
5271         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]);
5272
5273         // if lump is empty there is nothing to load, we can deal with that in the LightPoint code
5274         if (l->filelen)
5275         {
5276                 if (l->filelen < count * (int)sizeof(*in))
5277                         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]);
5278                 if (l->filelen != count * (int)sizeof(*in))
5279                         Con_Printf("Mod_Q3BSP_LoadLightGrid: Warning: calculated lightgrid size %i bytes does not match lump size %i\n", (int)(count * sizeof(*in)), l->filelen);
5280                 out = (q3dlightgrid_t *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
5281                 loadmodel->brushq3.data_lightgrid = out;
5282                 loadmodel->brushq3.num_lightgrid = count;
5283                 // no swapping or validation necessary
5284                 memcpy(out, in, count * (int)sizeof(*out));
5285         }
5286 }
5287
5288 static void Mod_Q3BSP_LoadPVS(lump_t *l)
5289 {
5290         q3dpvs_t *in;
5291         int totalchains;
5292
5293         if (l->filelen == 0)
5294         {
5295                 int i;
5296                 // unvised maps often have cluster indices even without pvs, so check
5297                 // leafs to find real number of clusters
5298                 loadmodel->brush.num_pvsclusters = 1;
5299                 for (i = 0;i < loadmodel->brush.num_leafs;i++)
5300                         loadmodel->brush.num_pvsclusters = max(loadmodel->brush.num_pvsclusters, loadmodel->brush.data_leafs[i].clusterindex + 1);
5301
5302                 // create clusters
5303                 loadmodel->brush.num_pvsclusterbytes = (loadmodel->brush.num_pvsclusters + 7) / 8;
5304                 totalchains = loadmodel->brush.num_pvsclusterbytes * loadmodel->brush.num_pvsclusters;
5305                 loadmodel->brush.data_pvsclusters = (unsigned char *)Mem_Alloc(loadmodel->mempool, totalchains);
5306                 memset(loadmodel->brush.data_pvsclusters, 0xFF, totalchains);
5307                 return;
5308         }
5309
5310         in = (q3dpvs_t *)(mod_base + l->fileofs);
5311         if (l->filelen < 9)
5312                 Host_Error("Mod_Q3BSP_LoadPVS: funny lump size in %s",loadmodel->name);
5313
5314         loadmodel->brush.num_pvsclusters = LittleLong(in->numclusters);
5315         loadmodel->brush.num_pvsclusterbytes = LittleLong(in->chainlength);
5316         if (loadmodel->brush.num_pvsclusterbytes < ((loadmodel->brush.num_pvsclusters + 7) / 8))
5317                 Host_Error("Mod_Q3BSP_LoadPVS: (chainlength = %i) < ((numclusters = %i) + 7) / 8", loadmodel->brush.num_pvsclusterbytes, loadmodel->brush.num_pvsclusters);
5318         totalchains = loadmodel->brush.num_pvsclusterbytes * loadmodel->brush.num_pvsclusters;
5319         if (l->filelen < totalchains + (int)sizeof(*in))
5320                 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);
5321
5322         loadmodel->brush.data_pvsclusters = (unsigned char *)Mem_Alloc(loadmodel->mempool, totalchains);
5323         memcpy(loadmodel->brush.data_pvsclusters, (unsigned char *)(in + 1), totalchains);
5324 }
5325
5326 static void Mod_Q3BSP_LightPoint(model_t *model, const vec3_t p, vec3_t ambientcolor, vec3_t diffusecolor, vec3_t diffusenormal)
5327 {
5328         int i, j, k, index[3];
5329         float transformed[3], blend1, blend2, blend, yaw, pitch, sinpitch, stylescale;
5330         q3dlightgrid_t *a, *s;
5331
5332         // scale lighting by lightstyle[0] so that darkmode in dpmod works properly
5333         stylescale = r_refdef.lightstylevalue[0] * (1.0f / 264.0f);
5334
5335         if (!model->brushq3.num_lightgrid)
5336         {
5337                 ambientcolor[0] = stylescale;
5338                 ambientcolor[1] = stylescale;
5339                 ambientcolor[2] = stylescale;
5340                 return;
5341         }
5342
5343         Matrix4x4_Transform(&model->brushq3.num_lightgrid_indexfromworld, p, transformed);
5344         //Matrix4x4_Print(&model->brushq3.num_lightgrid_indexfromworld);
5345         //Con_Printf("%f %f %f transformed %f %f %f clamped ", p[0], p[1], p[2], transformed[0], transformed[1], transformed[2]);
5346         transformed[0] = bound(0, transformed[0], model->brushq3.num_lightgrid_isize[0] - 1);
5347         transformed[1] = bound(0, transformed[1], model->brushq3.num_lightgrid_isize[1] - 1);
5348         transformed[2] = bound(0, transformed[2], model->brushq3.num_lightgrid_isize[2] - 1);
5349         index[0] = (int)floor(transformed[0]);
5350         index[1] = (int)floor(transformed[1]);
5351         index[2] = (int)floor(transformed[2]);
5352         //Con_Printf("%f %f %f index %i %i %i:\n", transformed[0], transformed[1], transformed[2], index[0], index[1], index[2]);
5353
5354         // now lerp the values
5355         VectorClear(diffusenormal);
5356         a = &model->brushq3.data_lightgrid[(index[2] * model->brushq3.num_lightgrid_isize[1] + index[1]) * model->brushq3.num_lightgrid_isize[0] + index[0]];
5357         for (k = 0;k < 2;k++)
5358         {
5359                 blend1 = (k ? (transformed[2] - index[2]) : (1 - (transformed[2] - index[2])));
5360                 if (blend1 < 0.001f || index[2] + k >= model->brushq3.num_lightgrid_isize[2])
5361                         continue;
5362                 for (j = 0;j < 2;j++)
5363                 {
5364                         blend2 = blend1 * (j ? (transformed[1] - index[1]) : (1 - (transformed[1] - index[1])));
5365                         if (blend2 < 0.001f || index[1] + j >= model->brushq3.num_lightgrid_isize[1])
5366                                 continue;
5367                         for (i = 0;i < 2;i++)
5368                         {
5369                                 blend = blend2 * (i ? (transformed[0] - index[0]) : (1 - (transformed[0] - index[0]))) * stylescale;
5370                                 if (blend < 0.001f || index[0] + i >= model->brushq3.num_lightgrid_isize[0])
5371                                         continue;
5372                                 s = a + (k * model->brushq3.num_lightgrid_isize[1] + j) * model->brushq3.num_lightgrid_isize[0] + i;
5373                                 VectorMA(ambientcolor, blend * (1.0f / 128.0f), s->ambientrgb, ambientcolor);
5374                                 VectorMA(diffusecolor, blend * (1.0f / 128.0f), s->diffusergb, diffusecolor);
5375                                 pitch = s->diffusepitch * M_PI / 128;
5376                                 yaw = s->diffuseyaw * M_PI / 128;
5377                                 sinpitch = sin(pitch);
5378                                 diffusenormal[0] += blend * (cos(yaw) * sinpitch);
5379                                 diffusenormal[1] += blend * (sin(yaw) * sinpitch);
5380                                 diffusenormal[2] += blend * (cos(pitch));
5381                                 //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)));
5382                         }
5383                 }
5384         }
5385
5386         // normalize the light direction before turning
5387         VectorNormalize(diffusenormal);
5388         //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]);
5389 }
5390
5391 static void Mod_Q3BSP_TracePoint_RecursiveBSPNode(trace_t *trace, model_t *model, mnode_t *node, const vec3_t point, int markframe)
5392 {
5393         int i;
5394         mleaf_t *leaf;
5395         colbrushf_t *brush;
5396         // find which leaf the point is in
5397         while (node->plane)
5398                 node = node->children[DotProduct(point, node->plane->normal) < node->plane->dist];
5399         // point trace the brushes
5400         leaf = (mleaf_t *)node;
5401         for (i = 0;i < leaf->numleafbrushes;i++)
5402         {
5403                 brush = model->brush.data_brushes[leaf->firstleafbrush[i]].colbrushf;
5404                 if (brush && brush->markframe != markframe && BoxesOverlap(point, point, brush->mins, brush->maxs))
5405                 {
5406                         brush->markframe = markframe;
5407                         Collision_TracePointBrushFloat(trace, point, brush);
5408                 }
5409         }
5410         // can't do point traces on curves (they have no thickness)
5411 }
5412
5413 static void Mod_Q3BSP_TraceLine_RecursiveBSPNode(trace_t *trace, 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)
5414 {
5415         int i, startside, endside;
5416         float dist1, dist2, midfrac, mid[3], nodesegmentmins[3], nodesegmentmaxs[3];
5417         mleaf_t *leaf;
5418         msurface_t *surface;
5419         mplane_t *plane;
5420         colbrushf_t *brush;
5421         // walk the tree until we hit a leaf, recursing for any split cases
5422         while (node->plane)
5423         {
5424                 plane = node->plane;
5425                 // axial planes are much more common than non-axial, so an optimized
5426                 // axial case pays off here
5427                 if (plane->type < 3)
5428                 {
5429                         dist1 = start[plane->type] - plane->dist;
5430                         dist2 = end[plane->type] - plane->dist;
5431                 }
5432                 else
5433                 {
5434                         dist1 = DotProduct(start, plane->normal) - plane->dist;
5435                         dist2 = DotProduct(end, plane->normal) - plane->dist;
5436                 }
5437                 startside = dist1 < 0;
5438                 endside = dist2 < 0;
5439                 if (startside == endside)
5440                 {
5441                         // most of the time the line fragment is on one side of the plane
5442                         node = node->children[startside];
5443                 }
5444                 else
5445                 {
5446                         // line crosses node plane, split the line
5447                         dist1 = PlaneDiff(linestart, plane);
5448                         dist2 = PlaneDiff(lineend, plane);
5449                         midfrac = dist1 / (dist1 - dist2);
5450                         VectorLerp(linestart, midfrac, lineend, mid);
5451                         // take the near side first
5452                         Mod_Q3BSP_TraceLine_RecursiveBSPNode(trace, model, node->children[startside], start, mid, startfrac, midfrac, linestart, lineend, markframe, segmentmins, segmentmaxs);
5453                         // if we found an impact on the front side, don't waste time
5454                         // exploring the far side
5455                         if (midfrac <= trace->realfraction)
5456                                 Mod_Q3BSP_TraceLine_RecursiveBSPNode(trace, model, node->children[endside], mid, end, midfrac, endfrac, linestart, lineend, markframe, segmentmins, segmentmaxs);
5457                         return;
5458                 }
5459         }
5460         // hit a leaf
5461         nodesegmentmins[0] = min(start[0], end[0]) - 1;
5462         nodesegmentmins[1] = min(start[1], end[1]) - 1;
5463         nodesegmentmins[2] = min(start[2], end[2]) - 1;
5464         nodesegmentmaxs[0] = max(start[0], end[0]) + 1;
5465         nodesegmentmaxs[1] = max(start[1], end[1]) + 1;
5466         nodesegmentmaxs[2] = max(start[2], end[2]) + 1;
5467         // line trace the brushes
5468         leaf = (mleaf_t *)node;
5469         for (i = 0;i < leaf->numleafbrushes;i++)
5470         {
5471                 brush = model->brush.data_brushes[leaf->firstleafbrush[i]].colbrushf;
5472                 if (brush && brush->markframe != markframe && BoxesOverlap(nodesegmentmins, nodesegmentmaxs, brush->mins, brush->maxs))
5473                 {
5474                         brush->markframe = markframe;
5475                         Collision_TraceLineBrushFloat(trace, linestart, lineend, brush, brush);
5476                 }
5477         }
5478         // can't do point traces on curves (they have no thickness)
5479         if (mod_q3bsp_curves_collisions.integer && !VectorCompare(start, end))
5480         {
5481                 // line trace the curves
5482                 for (i = 0;i < leaf->numleafsurfaces;i++)
5483                 {
5484                         surface = model->data_surfaces + leaf->firstleafsurface[i];
5485                         if (surface->num_collisiontriangles && surface->collisionmarkframe != markframe && BoxesOverlap(nodesegmentmins, nodesegmentmaxs, surface->mins, surface->maxs))
5486                         {
5487                                 surface->collisionmarkframe = markframe;
5488                                 Collision_TraceLineTriangleMeshFloat(trace, linestart, lineend, surface->num_collisiontriangles, surface->data_collisionelement3i, surface->data_collisionvertex3f, surface->texture->supercontents, surface->texture->surfaceflags, surface->texture, segmentmins, segmentmaxs);
5489                         }
5490                 }
5491         }
5492 }
5493
5494 static void Mod_Q3BSP_TraceBrush_RecursiveBSPNode(trace_t *trace, 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)
5495 {
5496         int i;
5497         int sides;
5498         mleaf_t *leaf;
5499         colbrushf_t *brush;
5500         msurface_t *surface;
5501         mplane_t *plane;
5502         float nodesegmentmins[3], nodesegmentmaxs[3];
5503         // walk the tree until we hit a leaf, recursing for any split cases
5504         while (node->plane)
5505         {
5506                 plane = node->plane;
5507                 // axial planes are much more common than non-axial, so an optimized
5508                 // axial case pays off here
5509                 if (plane->type < 3)
5510                 {
5511                         // this is an axial plane, compare bounding box directly to it and
5512                         // recurse sides accordingly
5513                         // recurse down node sides
5514                         // use an inlined axial BoxOnPlaneSide to slightly reduce overhead
5515                         //sides = BoxOnPlaneSide(nodesegmentmins, nodesegmentmaxs, plane);
5516                         //sides = ((segmentmaxs[plane->type] >= plane->dist) | ((segmentmins[plane->type] < plane->dist) << 1));
5517                         sides = ((segmentmaxs[plane->type] >= plane->dist) + ((segmentmins[plane->type] < plane->dist) * 2));
5518                 }
5519                 else
5520                 {
5521                         // this is a non-axial plane, so check if the start and end boxes
5522                         // are both on one side of the plane to handle 'diagonal' cases
5523                         sides = BoxOnPlaneSide(thisbrush_start->mins, thisbrush_start->maxs, plane) | BoxOnPlaneSide(thisbrush_end->mins, thisbrush_end->maxs, plane);
5524                 }
5525                 if (sides == 3)
5526                 {
5527                         // segment crosses plane
5528                         Mod_Q3BSP_TraceBrush_RecursiveBSPNode(trace, model, node->children[0], thisbrush_start, thisbrush_end, markframe, segmentmins, segmentmaxs);
5529                         sides = 2;
5530                 }
5531                 // if sides == 0 then the trace itself is bogus (Not A Number values),
5532                 // in this case we simply pretend the trace hit nothing
5533                 if (sides == 0)
5534                         return; // ERROR: NAN bounding box!
5535                 // take whichever side the segment box is on
5536                 node = node->children[sides - 1];
5537         }
5538         nodesegmentmins[0] = max(segmentmins[0], node->mins[0] - 1);
5539         nodesegmentmins[1] = max(segmentmins[1], node->mins[1] - 1);
5540         nodesegmentmins[2] = max(segmentmins[2], node->mins[2] - 1);
5541         nodesegmentmaxs[0] = min(segmentmaxs[0], node->maxs[0] + 1);
5542         nodesegmentmaxs[1] = min(segmentmaxs[1], node->maxs[1] + 1);
5543         nodesegmentmaxs[2] = min(segmentmaxs[2], node->maxs[2] + 1);
5544         // hit a leaf
5545         leaf = (mleaf_t *)node;
5546         for (i = 0;i < leaf->numleafbrushes;i++)
5547         {
5548                 brush = model->brush.data_brushes[leaf->firstleafbrush[i]].colbrushf;
5549                 if (brush && brush->markframe != markframe && BoxesOverlap(nodesegmentmins, nodesegmentmaxs, brush->mins, brush->maxs))
5550                 {
5551                         brush->markframe = markframe;
5552                         Collision_TraceBrushBrushFloat(trace, thisbrush_start, thisbrush_end, brush, brush);
5553                 }
5554         }
5555         if (mod_q3bsp_curves_collisions.integer)
5556         {
5557                 for (i = 0;i < leaf->numleafsurfaces;i++)
5558                 {
5559                         surface = model->data_surfaces + leaf->firstleafsurface[i];
5560                         if (surface->num_collisiontriangles && surface->collisionmarkframe != markframe && BoxesOverlap(nodesegmentmins, nodesegmentmaxs, surface->mins, surface->maxs))
5561                         {
5562                                 surface->collisionmarkframe = markframe;
5563                                 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);
5564                         }
5565                 }
5566         }
5567 }
5568
5569 static void Mod_Q3BSP_TraceBox(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)
5570 {
5571         int i;
5572         float segmentmins[3], segmentmaxs[3];
5573         static int markframe = 0;
5574         msurface_t *surface;
5575         q3mbrush_t *brush;
5576         memset(trace, 0, sizeof(*trace));
5577         trace->fraction = 1;
5578         trace->realfraction = 1;
5579         trace->hitsupercontentsmask = hitsupercontentsmask;
5580         if (mod_q3bsp_optimizedtraceline.integer && VectorLength2(boxmins) + VectorLength2(boxmaxs) == 0)
5581         {
5582                 if (VectorCompare(start, end))
5583                 {
5584                         // point trace
5585                         if (model->brush.submodel)
5586                         {
5587                                 for (i = 0, brush = model->brush.data_brushes + model->firstmodelbrush;i < model->nummodelbrushes;i++, brush++)
5588                                         if (brush->colbrushf)
5589                                                 Collision_TracePointBrushFloat(trace, start, brush->colbrushf);
5590                         }
5591                         else
5592                                 Mod_Q3BSP_TracePoint_RecursiveBSPNode(trace, model, model->brush.data_nodes, start, ++markframe);
5593                 }
5594                 else
5595                 {
5596                         // line trace
5597                         segmentmins[0] = min(start[0], end[0]) - 1;
5598                         segmentmins[1] = min(start[1], end[1]) - 1;
5599                         segmentmins[2] = min(start[2], end[2]) - 1;
5600                         segmentmaxs[0] = max(start[0], end[0]) + 1;
5601                         segmentmaxs[1] = max(start[1], end[1]) + 1;
5602                         segmentmaxs[2] = max(start[2], end[2]) + 1;
5603                         if (model->brush.submodel)
5604                         {
5605                                 for (i = 0, brush = model->brush.data_brushes + model->firstmodelbrush;i < model->nummodelbrushes;i++, brush++)
5606                                         if (brush->colbrushf)
5607                                                 Collision_TraceLineBrushFloat(trace, start, end, brush->colbrushf, brush->colbrushf);
5608                                 if (mod_q3bsp_curves_collisions.integer)
5609                                         for (i = 0, surface = model->data_surfaces + model->firstmodelsurface;i < model->nummodelsurfaces;i++, surface++)
5610                                                 if (surface->num_collisiontriangles)
5611                                                         Collision_TraceLineTriangleMeshFloat(trace, start, end, surface->num_collisiontriangles, surface->data_collisionelement3i, surface->data_collisionvertex3f, surface->texture->supercontents, surface->texture->surfaceflags, surface->texture, segmentmins, segmentmaxs);
5612                         }
5613                         else
5614                                 Mod_Q3BSP_TraceLine_RecursiveBSPNode(trace, model, model->brush.data_nodes, start, end, 0, 1, start, end, ++markframe, segmentmins, segmentmaxs);
5615                 }
5616         }
5617         else
5618         {
5619                 // box trace, performed as brush trace
5620                 colbrushf_t *thisbrush_start, *thisbrush_end;
5621                 vec3_t boxstartmins, boxstartmaxs, boxendmins, boxendmaxs;
5622                 segmentmins[0] = min(start[0], end[0]) + boxmins[0] - 1;
5623                 segmentmins[1] = min(start[1], end[1]) + boxmins[1] - 1;
5624                 segmentmins[2] = min(start[2], end[2]) + boxmins[2] - 1;
5625                 segmentmaxs[0] = max(start[0], end[0]) + boxmaxs[0] + 1;
5626                 segmentmaxs[1] = max(start[1], end[1]) + boxmaxs[1] + 1;
5627                 segmentmaxs[2] = max(start[2], end[2]) + boxmaxs[2] + 1;
5628                 VectorAdd(start, boxmins, boxstartmins);
5629                 VectorAdd(start, boxmaxs, boxstartmaxs);
5630                 VectorAdd(end, boxmins, boxendmins);
5631                 VectorAdd(end, boxmaxs, boxendmaxs);
5632                 thisbrush_start = Collision_BrushForBox(&identitymatrix, boxstartmins, boxstartmaxs, 0, 0, NULL);
5633                 thisbrush_end = Collision_BrushForBox(&identitymatrix, boxendmins, boxendmaxs, 0, 0, NULL);
5634                 if (model->brush.submodel)
5635                 {
5636                         for (i = 0, brush = model->brush.data_brushes + model->firstmodelbrush;i < model->nummodelbrushes;i++, brush++)
5637                                 if (brush->colbrushf)
5638                                         Collision_TraceBrushBrushFloat(trace, thisbrush_start, thisbrush_end, brush->colbrushf, brush->colbrushf);
5639                         if (mod_q3bsp_curves_collisions.integer)
5640                                 for (i = 0, surface = model->data_surfaces + model->firstmodelsurface;i < model->nummodelsurfaces;i++, surface++)
5641                                         if (surface->num_collisiontriangles)
5642                                                 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);
5643                 }
5644                 else
5645                         Mod_Q3BSP_TraceBrush_RecursiveBSPNode(trace, model, model->brush.data_nodes, thisbrush_start, thisbrush_end, ++markframe, segmentmins, segmentmaxs);
5646         }
5647 }
5648
5649 static int Mod_Q3BSP_SuperContentsFromNativeContents(model_t *model, int nativecontents)
5650 {
5651         int supercontents = 0;
5652         if (nativecontents & CONTENTSQ3_SOLID)
5653                 supercontents |= SUPERCONTENTS_SOLID;
5654         if (nativecontents & CONTENTSQ3_WATER)
5655                 supercontents |= SUPERCONTENTS_WATER;
5656         if (nativecontents & CONTENTSQ3_SLIME)
5657                 supercontents |= SUPERCONTENTS_SLIME;
5658         if (nativecontents & CONTENTSQ3_LAVA)
5659                 supercontents |= SUPERCONTENTS_LAVA;
5660         if (nativecontents & CONTENTSQ3_BODY)
5661                 supercontents |= SUPERCONTENTS_BODY;
5662         if (nativecontents & CONTENTSQ3_CORPSE)
5663                 supercontents |= SUPERCONTENTS_CORPSE;
5664         if (nativecontents & CONTENTSQ3_NODROP)
5665                 supercontents |= SUPERCONTENTS_NODROP;
5666         if (nativecontents & CONTENTSQ3_PLAYERCLIP)
5667                 supercontents |= SUPERCONTENTS_PLAYERCLIP;
5668         if (nativecontents & CONTENTSQ3_MONSTERCLIP)
5669                 supercontents |= SUPERCONTENTS_MONSTERCLIP;
5670         if (nativecontents & CONTENTSQ3_DONOTENTER)
5671                 supercontents |= SUPERCONTENTS_DONOTENTER;
5672         return supercontents;
5673 }
5674
5675 static int Mod_Q3BSP_NativeContentsFromSuperContents(model_t *model, int supercontents)
5676 {
5677         int nativecontents = 0;
5678         if (supercontents & SUPERCONTENTS_SOLID)
5679                 nativecontents |= CONTENTSQ3_SOLID;
5680         if (supercontents & SUPERCONTENTS_WATER)
5681                 nativecontents |= CONTENTSQ3_WATER;
5682         if (supercontents & SUPERCONTENTS_SLIME)
5683                 nativecontents |= CONTENTSQ3_SLIME;
5684         if (supercontents & SUPERCONTENTS_LAVA)
5685                 nativecontents |= CONTENTSQ3_LAVA;
5686         if (supercontents & SUPERCONTENTS_BODY)
5687                 nativecontents |= CONTENTSQ3_BODY;
5688         if (supercontents & SUPERCONTENTS_CORPSE)
5689                 nativecontents |= CONTENTSQ3_CORPSE;
5690         if (supercontents & SUPERCONTENTS_NODROP)
5691                 nativecontents |= CONTENTSQ3_NODROP;
5692         if (supercontents & SUPERCONTENTS_PLAYERCLIP)
5693                 nativecontents |= CONTENTSQ3_PLAYERCLIP;
5694         if (supercontents & SUPERCONTENTS_MONSTERCLIP)
5695                 nativecontents |= CONTENTSQ3_MONSTERCLIP;
5696         if (supercontents & SUPERCONTENTS_DONOTENTER)
5697                 nativecontents |= CONTENTSQ3_DONOTENTER;
5698         return nativecontents;
5699 }
5700
5701 void Mod_Q3BSP_RecursiveFindNumLeafs(mnode_t *node)
5702 {
5703         int numleafs;
5704         while (node->plane)
5705         {
5706                 Mod_Q3BSP_RecursiveFindNumLeafs(node->children[0]);
5707                 node = node->children[1];
5708         }
5709         numleafs = ((mleaf_t *)node - loadmodel->brush.data_leafs) + 1;
5710         if (loadmodel->brush.num_leafs < numleafs)
5711                 loadmodel->brush.num_leafs = numleafs;
5712 }
5713
5714 void Mod_Q3BSP_Load(model_t *mod, void *buffer, void *bufferend)
5715 {
5716         int i, j, numshadowmeshtriangles;
5717         q3dheader_t *header;
5718         float corner[3], yawradius, modelradius;
5719         msurface_t *surface;
5720
5721         mod->type = mod_brushq3;
5722         mod->numframes = 2; // although alternate textures are not supported it is annoying to complain about no such frame 1
5723         mod->numskins = 1;
5724
5725         header = (q3dheader_t *)buffer;
5726
5727         i = LittleLong(header->version);
5728         if (i != Q3BSPVERSION)
5729                 Host_Error("Mod_Q3BSP_Load: %s has wrong version number (%i, should be %i)", mod->name, i, Q3BSPVERSION);
5730         mod->brush.ishlbsp = false;
5731         mod->brush.ismcbsp = false;
5732         if (loadmodel->isworldmodel)
5733         {
5734                 Cvar_SetValue("halflifebsp", mod->brush.ishlbsp);
5735                 Cvar_SetValue("mcbsp", mod->brush.ismcbsp);
5736         }
5737
5738         mod->soundfromcenter = true;
5739         mod->TraceBox = Mod_Q3BSP_TraceBox;
5740         mod->brush.SuperContentsFromNativeContents = Mod_Q3BSP_SuperContentsFromNativeContents;
5741         mod->brush.NativeContentsFromSuperContents = Mod_Q3BSP_NativeContentsFromSuperContents;
5742         mod->brush.GetPVS = Mod_Q1BSP_GetPVS;
5743         mod->brush.FatPVS = Mod_Q1BSP_FatPVS;
5744         mod->brush.BoxTouchingPVS = Mod_Q1BSP_BoxTouchingPVS;
5745         mod->brush.BoxTouchingLeafPVS = Mod_Q1BSP_BoxTouchingLeafPVS;
5746         mod->brush.BoxTouchingVisibleLeafs = Mod_Q1BSP_BoxTouchingVisibleLeafs;
5747         mod->brush.FindBoxClusters = Mod_Q1BSP_FindBoxClusters;
5748         mod->brush.LightPoint = Mod_Q3BSP_LightPoint;
5749         mod->brush.FindNonSolidLocation = Mod_Q1BSP_FindNonSolidLocation;
5750         mod->brush.PointInLeaf = Mod_Q1BSP_PointInLeaf;
5751         mod->Draw = R_Q1BSP_Draw;
5752         mod->GetLightInfo = R_Q1BSP_GetLightInfo;
5753         mod->CompileShadowVolume = R_Q1BSP_CompileShadowVolume;
5754         mod->DrawShadowVolume = R_Q1BSP_DrawShadowVolume;
5755         mod->DrawLight = R_Q1BSP_DrawLight;
5756
5757         mod_base = (unsigned char *)header;
5758
5759         // swap all the lumps
5760         header->ident = LittleLong(header->ident);
5761         header->version = LittleLong(header->version);
5762         for (i = 0;i < Q3HEADER_LUMPS;i++)
5763         {
5764                 header->lumps[i].fileofs = LittleLong(header->lumps[i].fileofs);
5765                 header->lumps[i].filelen = LittleLong(header->lumps[i].filelen);
5766         }
5767
5768         mod->brush.qw_md4sum = 0;
5769         mod->brush.qw_md4sum2 = 0;
5770         for (i = 0;i < Q3HEADER_LUMPS;i++)
5771         {
5772                 if (i == Q3LUMP_ENTITIES)
5773                         continue;
5774                 mod->brush.qw_md4sum ^= Com_BlockChecksum(mod_base + header->lumps[i].fileofs, header->lumps[i].filelen);
5775                 if (i == Q3LUMP_PVS || i == Q3LUMP_LEAFS || i == Q3LUMP_NODES)
5776                         continue;
5777                 mod->brush.qw_md4sum2 ^= Com_BlockChecksum(mod_base + header->lumps[i].fileofs, header->lumps[i].filelen);
5778         }
5779
5780         Mod_Q3BSP_LoadEntities(&header->lumps[Q3LUMP_ENTITIES]);
5781         Mod_Q3BSP_LoadTextures(&header->lumps[Q3LUMP_TEXTURES]);
5782         Mod_Q3BSP_LoadPlanes(&header->lumps[Q3LUMP_PLANES]);
5783         Mod_Q3BSP_LoadBrushSides(&header->lumps[Q3LUMP_BRUSHSIDES]);
5784         Mod_Q3BSP_LoadBrushes(&header->lumps[Q3LUMP_BRUSHES]);
5785         Mod_Q3BSP_LoadEffects(&header->lumps[Q3LUMP_EFFECTS]);
5786         Mod_Q3BSP_LoadVertices(&header->lumps[Q3LUMP_VERTICES]);
5787         Mod_Q3BSP_LoadTriangles(&header->lumps[Q3LUMP_TRIANGLES]);
5788         Mod_Q3BSP_LoadLightmaps(&header->lumps[Q3LUMP_LIGHTMAPS]);
5789         Mod_Q3BSP_LoadFaces(&header->lumps[Q3LUMP_FACES]);
5790         Mod_Q3BSP_LoadModels(&header->lumps[Q3LUMP_MODELS]);
5791         Mod_Q3BSP_LoadLeafBrushes(&header->lumps[Q3LUMP_LEAFBRUSHES]);
5792         Mod_Q3BSP_LoadLeafFaces(&header->lumps[Q3LUMP_LEAFFACES]);
5793         Mod_Q3BSP_LoadLeafs(&header->lumps[Q3LUMP_LEAFS]);
5794         Mod_Q3BSP_LoadNodes(&header->lumps[Q3LUMP_NODES]);
5795         Mod_Q3BSP_LoadLightGrid(&header->lumps[Q3LUMP_LIGHTGRID]);
5796         Mod_Q3BSP_LoadPVS(&header->lumps[Q3LUMP_PVS]);
5797         loadmodel->brush.numsubmodels = loadmodel->brushq3.num_models;
5798
5799         // the MakePortals code works fine on the q3bsp data as well
5800         Mod_Q1BSP_MakePortals();
5801
5802         // FIXME: shader alpha should replace r_wateralpha support in q3bsp
5803         loadmodel->brush.supportwateralpha = true;
5804
5805         // make a single combined shadow mesh to allow optimized shadow volume creation
5806         numshadowmeshtriangles = 0;
5807         for (j = 0, surface = loadmodel->data_surfaces;j < loadmodel->num_surfaces;j++, surface++)
5808         {
5809                 surface->num_firstshadowmeshtriangle = numshadowmeshtriangles;
5810                 numshadowmeshtriangles += surface->num_triangles;
5811         }
5812         loadmodel->brush.shadowmesh = Mod_ShadowMesh_Begin(loadmodel->mempool, numshadowmeshtriangles * 3, numshadowmeshtriangles, NULL, NULL, NULL, false, false, true);
5813         for (j = 0, surface = loadmodel->data_surfaces;j < loadmodel->num_surfaces;j++, surface++)
5814                 if (surface->num_triangles > 0)
5815                         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));
5816         loadmodel->brush.shadowmesh = Mod_ShadowMesh_Finish(loadmodel->mempool, loadmodel->brush.shadowmesh, false, true);
5817         Mod_BuildTriangleNeighbors(loadmodel->brush.shadowmesh->neighbor3i, loadmodel->brush.shadowmesh->element3i, loadmodel->brush.shadowmesh->numtriangles);
5818
5819         loadmodel->brush.num_leafs = 0;
5820         Mod_Q3BSP_RecursiveFindNumLeafs(loadmodel->brush.data_nodes);
5821
5822         if (loadmodel->isworldmodel)
5823         {
5824                 // clear out any stale submodels or worldmodels lying around
5825                 // if we did this clear before now, an error might abort loading and
5826                 // leave things in a bad state
5827                 Mod_RemoveStaleWorldModels(loadmodel);
5828         }
5829
5830         mod = loadmodel;
5831         for (i = 0;i < loadmodel->brush.numsubmodels;i++)
5832         {
5833                 if (i > 0)
5834                 {
5835                         char name[10];
5836                         // LordHavoc: only register submodels if it is the world
5837                         // (prevents external bsp models from replacing world submodels with
5838                         //  their own)
5839                         if (!loadmodel->isworldmodel)
5840                                 continue;
5841                         // duplicate the basic information
5842                         sprintf(name, "*%i", i);
5843                         mod = Mod_FindName(name);
5844                         *mod = *loadmodel;
5845                         strlcpy(mod->name, name, sizeof(mod->name));
5846                         // textures and memory belong to the main model
5847                         mod->texturepool = NULL;
5848                         mod->mempool = NULL;
5849                         mod->brush.GetPVS = NULL;
5850                         mod->brush.FatPVS = NULL;
5851                         mod->brush.BoxTouchingPVS = NULL;
5852                         mod->brush.BoxTouchingLeafPVS = NULL;
5853                         mod->brush.BoxTouchingVisibleLeafs = NULL;
5854                         mod->brush.FindBoxClusters = NULL;
5855                         mod->brush.LightPoint = NULL;
5856                         mod->brush.FindNonSolidLocation = Mod_Q1BSP_FindNonSolidLocation;
5857                 }
5858                 mod->brush.submodel = i;
5859
5860                 // make the model surface list (used by shadowing/lighting)
5861                 mod->firstmodelsurface = mod->brushq3.data_models[i].firstface;
5862                 mod->nummodelsurfaces = mod->brushq3.data_models[i].numfaces;
5863                 mod->firstmodelbrush = mod->brushq3.data_models[i].firstbrush;
5864                 mod->nummodelbrushes = mod->brushq3.data_models[i].numbrushes;
5865                 mod->surfacelist = (int *)Mem_Alloc(loadmodel->mempool, mod->nummodelsurfaces * sizeof(*mod->surfacelist));
5866                 for (j = 0;j < mod->nummodelsurfaces;j++)
5867                         mod->surfacelist[j] = mod->firstmodelsurface + j;
5868
5869                 VectorCopy(mod->brushq3.data_models[i].mins, mod->normalmins);
5870                 VectorCopy(mod->brushq3.data_models[i].maxs, mod->normalmaxs);
5871                 corner[0] = max(fabs(mod->normalmins[0]), fabs(mod->normalmaxs[0]));
5872                 corner[1] = max(fabs(mod->normalmins[1]), fabs(mod->normalmaxs[1]));
5873                 corner[2] = max(fabs(mod->normalmins[2]), fabs(mod->normalmaxs[2]));
5874                 modelradius = sqrt(corner[0]*corner[0]+corner[1]*corner[1]+corner[2]*corner[2]);
5875                 yawradius = sqrt(corner[0]*corner[0]+corner[1]*corner[1]);
5876                 mod->rotatedmins[0] = mod->rotatedmins[1] = mod->rotatedmins[2] = -modelradius;
5877                 mod->rotatedmaxs[0] = mod->rotatedmaxs[1] = mod->rotatedmaxs[2] = modelradius;
5878                 mod->yawmaxs[0] = mod->yawmaxs[1] = yawradius;
5879                 mod->yawmins[0] = mod->yawmins[1] = -yawradius;
5880                 mod->yawmins[2] = mod->normalmins[2];
5881                 mod->yawmaxs[2] = mod->normalmaxs[2];
5882                 mod->radius = modelradius;
5883                 mod->radius2 = modelradius * modelradius;
5884
5885                 for (j = 0;j < mod->nummodelsurfaces;j++)
5886                         if (mod->data_surfaces[j + mod->firstmodelsurface].texture->surfaceflags & Q3SURFACEFLAG_SKY)
5887                                 break;
5888                 if (j < mod->nummodelsurfaces)
5889                         mod->DrawSky = R_Q1BSP_DrawSky;
5890                 else
5891                         mod->DrawSky = NULL;
5892         }
5893 }
5894
5895 void Mod_IBSP_Load(model_t *mod, void *buffer, void *bufferend)
5896 {
5897         int i = LittleLong(((int *)buffer)[1]);
5898         if (i == Q3BSPVERSION)
5899                 Mod_Q3BSP_Load(mod,buffer, bufferend);
5900         else if (i == Q2BSPVERSION)
5901                 Mod_Q2BSP_Load(mod,buffer, bufferend);
5902         else
5903                 Host_Error("Mod_IBSP_Load: unknown/unsupported version %i", i);
5904 }
5905
5906 void Mod_MAP_Load(model_t *mod, void *buffer, void *bufferend)
5907 {
5908         Host_Error("Mod_MAP_Load: not yet implemented");
5909 }
5910