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 static int Mod_Q1BSP_RecursiveHullCheck(RecursiveHullCheckTraceInfo_t *t, int num, double p1f, double p2f, double p1[3], double p2[3])
 618 {
 619         // status variables, these don't need to be saved on the stack when
 620         // recursing...  but are because this should be thread-safe
 621         // (note: tracing against a bbox is not thread-safe, yet)
 622         int ret;
 623         mplane_t *plane;
 624         double t1, t2;
 625
 626         // variables that need to be stored on the stack when recursing
 627         dclipnode_t *node;
 628         int side;
 629         double midf, mid[3];
 630
 631         // LordHavoc: a goto!  everyone flee in terror... :)
 632 loc0:
 633         // check for empty
 634         if (num < 0)
 635         {
 636                 num = Mod_Q1BSP_SuperContentsFromNativeContents(NULL, num);
 637                 if (!t->trace->startfound)
 638                 {
 639                         t->trace->startfound = true;
 640                         t->trace->startsupercontents |= num;
 641                 }
 642                 if (num & SUPERCONTENTS_LIQUIDSMASK)
 643                         t->trace->inwater = true;
 644                 if (num == 0)
 645                         t->trace->inopen = true;
 646                 if (num & SUPERCONTENTS_SOLID)
 647                         t->trace->hittexture = &mod_q1bsp_texture_solid;
 648                 else if (num & SUPERCONTENTS_SKY)
 649                         t->trace->hittexture = &mod_q1bsp_texture_sky;
 650                 else if (num & SUPERCONTENTS_LAVA)
 651                         t->trace->hittexture = &mod_q1bsp_texture_lava;
 652                 else if (num & SUPERCONTENTS_SLIME)
 653                         t->trace->hittexture = &mod_q1bsp_texture_slime;
 654                 else
 655                         t->trace->hittexture = &mod_q1bsp_texture_water;
 656                 t->trace->hitq3surfaceflags = t->trace->hittexture->surfaceflags;
 657                 t->trace->hitsupercontents = num;
 658                 if (num & t->trace->hitsupercontentsmask)
 659                 {
 660                         // if the first leaf is solid, set startsolid
 661                         if (t->trace->allsolid)
 662                                 t->trace->startsolid = true;
 663 #if COLLISIONPARANOID >= 3
 664                         Con_Print("S");
 665 #endif
 666                         return HULLCHECKSTATE_SOLID;
 667                 }
 668                 else
 669                 {
 670                         t->trace->allsolid = false;
 671 #if COLLISIONPARANOID >= 3
 672                         Con_Print("E");
 673 #endif
 674                         return HULLCHECKSTATE_EMPTY;
 675                 }
 676         }
 677
 678         // find the point distances
 679         node = t->hull->clipnodes + num;
 680
 681         plane = t->hull->planes + node->planenum;
 682         if (plane->type < 3)
 683         {
 684                 t1 = p1[plane->type] - plane->dist;
 685                 t2 = p2[plane->type] - plane->dist;
 686         }
 687         else
 688         {
 689                 t1 = DotProduct (plane->normal, p1) - plane->dist;
 690                 t2 = DotProduct (plane->normal, p2) - plane->dist;
 691         }
 692
 693         if (t1 < 0)
 694         {
 695                 if (t2 < 0)
 696                 {
 697 #if COLLISIONPARANOID >= 3
 698                         Con_Print("<");
 699 #endif
 700                         num = node->children[1];
 701                         goto loc0;
 702                 }
 703                 side = 1;
 704         }
 705         else
 706         {
 707                 if (t2 >= 0)
 708                 {
 709 #if COLLISIONPARANOID >= 3
 710                         Con_Print(">");
 711 #endif
 712                         num = node->children[0];
 713                         goto loc0;
 714                 }
 715                 side = 0;
 716         }
 717
 718         // the line intersects, find intersection point
 719         // LordHavoc: this uses the original trace for maximum accuracy
 720 #if COLLISIONPARANOID >= 3
 721         Con_Print("M");
 722 #endif
 723         if (plane->type < 3)
 724         {
 725                 t1 = t->start[plane->type] - plane->dist;
 726                 t2 = t->end[plane->type] - plane->dist;
 727         }
 728         else
 729         {
 730                 t1 = DotProduct (plane->normal, t->start) - plane->dist;
 731                 t2 = DotProduct (plane->normal, t->end) - plane->dist;
 732         }
 733
 734         midf = t1 / (t1 - t2);
 735         midf = bound(p1f, midf, p2f);
 736         VectorMA(t->start, midf, t->dist, mid);
 737
 738         // recurse both sides, front side first
 739         ret = Mod_Q1BSP_RecursiveHullCheck(t, node->children[side], p1f, midf, p1, mid);
 740         // if this side is not empty, return what it is (solid or done)
 741         if (ret != HULLCHECKSTATE_EMPTY)
 742                 return ret;
 743
 744         ret = Mod_Q1BSP_RecursiveHullCheck(t, node->children[side ^ 1], midf, p2f, mid, p2);
 745         // if other side is not solid, return what it is (empty or done)
 746         if (ret != HULLCHECKSTATE_SOLID)
 747                 return ret;
 748
 749         // front is air and back is solid, this is the impact point...
 750         if (side)
 751         {
 752                 t->trace->plane.dist = -plane->dist;
 753                 VectorNegate (plane->normal, t->trace->plane.normal);
 754         }
 755         else
 756         {
 757                 t->trace->plane.dist = plane->dist;
 758                 VectorCopy (plane->normal, t->trace->plane.normal);
 759         }
 760
 761         // calculate the true fraction
 762         t1 = DotProduct(t->trace->plane.normal, t->start) - t->trace->plane.dist;
 763         t2 = DotProduct(t->trace->plane.normal, t->end) - t->trace->plane.dist;
 764         midf = t1 / (t1 - t2);
 765         t->trace->realfraction = bound(0, midf, 1);
 766
 767         // calculate the return fraction which is nudged off the surface a bit
 768         midf = (t1 - DIST_EPSILON) / (t1 - t2);
 769         t->trace->fraction = bound(0, midf, 1);
 770
 771 #if COLLISIONPARANOID >= 3
 772         Con_Print("D");
 773 #endif
 774         return HULLCHECKSTATE_DONE;
 775 }
 776
 777 //#if COLLISIONPARANOID < 2
 778 static int Mod_Q1BSP_RecursiveHullCheckPoint(RecursiveHullCheckTraceInfo_t *t, int num)
 779 {
 780         while (num >= 0)
 781                 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];
 782         num = Mod_Q1BSP_SuperContentsFromNativeContents(NULL, num);
 783         t->trace->startsupercontents |= num;
 784         if (num & SUPERCONTENTS_LIQUIDSMASK)
 785                 t->trace->inwater = true;
 786         if (num == 0)
 787                 t->trace->inopen = true;
 788         if (num & t->trace->hitsupercontentsmask)
 789         {
 790                 t->trace->allsolid = t->trace->startsolid = true;
 791                 return HULLCHECKSTATE_SOLID;
 792         }
 793         else
 794         {
 795                 t->trace->allsolid = t->trace->startsolid = false;
 796                 return HULLCHECKSTATE_EMPTY;
 797         }
 798 }
 799 //#endif
 800
 801 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)
 802 {
 803         // this function currently only supports same size start and end
 804         double boxsize[3];
 805         RecursiveHullCheckTraceInfo_t rhc;
 806
 807         memset(&rhc, 0, sizeof(rhc));
 808         memset(trace, 0, sizeof(trace_t));
 809         rhc.trace = trace;
 810         rhc.trace->hitsupercontentsmask = hitsupercontentsmask;
 811         rhc.trace->fraction = 1;
 812         rhc.trace->realfraction = 1;
 813         rhc.trace->allsolid = true;
 814         VectorSubtract(boxmaxs, boxmins, boxsize);
 815         if (boxsize[0] < 3)
 816                 rhc.hull = &model->brushq1.hulls[0]; // 0x0x0
 817         else if (model->brush.ismcbsp)
 818         {
 819                 if (boxsize[2] < 48) // pick the nearest of 40 or 56
 820                         rhc.hull = &model->brushq1.hulls[2]; // 16x16x40
 821                 else
 822                         rhc.hull = &model->brushq1.hulls[1]; // 16x16x56
 823         }
 824         else if (model->brush.ishlbsp)
 825         {
 826                 // LordHavoc: this has to have a minor tolerance (the .1) because of
 827                 // minor float precision errors from the box being transformed around
 828                 if (boxsize[0] < 32.1)
 829                 {
 830                         if (boxsize[2] < 54) // pick the nearest of 36 or 72
 831                                 rhc.hull = &model->brushq1.hulls[3]; // 32x32x36
 832                         else
 833                                 rhc.hull = &model->brushq1.hulls[1]; // 32x32x72
 834                 }
 835                 else
 836                         rhc.hull = &model->brushq1.hulls[2]; // 64x64x64
 837         }
 838         else
 839         {
 840                 // LordHavoc: this has to have a minor tolerance (the .1) because of
 841                 // minor float precision errors from the box being transformed around
 842                 if (boxsize[0] < 32.1)
 843                         rhc.hull = &model->brushq1.hulls[1]; // 32x32x56
 844                 else
 845                         rhc.hull = &model->brushq1.hulls[2]; // 64x64x88
 846         }
 847         VectorMAMAM(1, start, 1, boxmins, -1, rhc.hull->clip_mins, rhc.start);
 848         VectorMAMAM(1, end, 1, boxmins, -1, rhc.hull->clip_mins, rhc.end);
 849         VectorSubtract(rhc.end, rhc.start, rhc.dist);
 850 #if COLLISIONPARANOID >= 2
 851         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]);
 852         Mod_Q1BSP_RecursiveHullCheck(&rhc, rhc.hull->firstclipnode, 0, 1, rhc.start, rhc.end);
 853         {
 854
 855                 double test[3];
 856                 trace_t testtrace;
 857                 VectorLerp(rhc.start, rhc.trace->fraction, rhc.end, test);
 858                 memset(&testtrace, 0, sizeof(trace_t));
 859                 rhc.trace = &testtrace;
 860                 rhc.trace->hitsupercontentsmask = hitsupercontentsmask;
 861                 rhc.trace->fraction = 1;
 862                 rhc.trace->realfraction = 1;
 863                 rhc.trace->allsolid = true;
 864                 VectorCopy(test, rhc.start);
 865                 VectorCopy(test, rhc.end);
 866                 VectorClear(rhc.dist);
 867                 Mod_Q1BSP_RecursiveHullCheckPoint(&rhc, rhc.hull->firstclipnode);
 868                 //Mod_Q1BSP_RecursiveHullCheck(&rhc, rhc.hull->firstclipnode, 0, 1, test, test);
 869                 if (!trace->startsolid && testtrace.startsolid)
 870                         Con_Printf(" - ended in solid!\n");
 871         }
 872         Con_Print("\n");
 873 #else
 874         if (VectorLength2(rhc.dist))
 875                 Mod_Q1BSP_RecursiveHullCheck(&rhc, rhc.hull->firstclipnode, 0, 1, rhc.start, rhc.end);
 876         else
 877                 Mod_Q1BSP_RecursiveHullCheckPoint(&rhc, rhc.hull->firstclipnode);
 878 #endif
 879 }
 880
 881 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)
 882 {
 883 #if 1
 884         colbrushf_t cbox;
 885         colplanef_t cbox_planes[6];
 886         cbox.supercontents = boxsupercontents;
 887         cbox.numplanes = 6;
 888         cbox.numpoints = 0;
 889         cbox.numtriangles = 0;
 890         cbox.planes = cbox_planes;
 891         cbox.points = NULL;
 892         cbox.elements = NULL;
 893         cbox.markframe = 0;
 894         cbox.mins[0] = 0;
 895         cbox.mins[1] = 0;
 896         cbox.mins[2] = 0;
 897         cbox.maxs[0] = 0;
 898         cbox.maxs[1] = 0;
 899         cbox.maxs[2] = 0;
 900         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];
 901         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];
 902         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];
 903         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];
 904         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];
 905         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];
 906         cbox_planes[0].q3surfaceflags = boxq3surfaceflags;cbox_planes[0].texture = boxtexture;
 907         cbox_planes[1].q3surfaceflags = boxq3surfaceflags;cbox_planes[1].texture = boxtexture;
 908         cbox_planes[2].q3surfaceflags = boxq3surfaceflags;cbox_planes[2].texture = boxtexture;
 909         cbox_planes[3].q3surfaceflags = boxq3surfaceflags;cbox_planes[3].texture = boxtexture;
 910         cbox_planes[4].q3surfaceflags = boxq3surfaceflags;cbox_planes[4].texture = boxtexture;
 911         cbox_planes[5].q3surfaceflags = boxq3surfaceflags;cbox_planes[5].texture = boxtexture;
 912         memset(trace, 0, sizeof(trace_t));
 913         trace->hitsupercontentsmask = hitsupercontentsmask;
 914         trace->fraction = 1;
 915         trace->realfraction = 1;
 916         Collision_TraceLineBrushFloat(trace, start, end, &cbox, &cbox);
 917 #else
 918         RecursiveHullCheckTraceInfo_t rhc;
 919         static hull_t box_hull;
 920         static dclipnode_t box_clipnodes[6];
 921         static mplane_t box_planes[6];
 922         // fill in a default trace
 923         memset(&rhc, 0, sizeof(rhc));
 924         memset(trace, 0, sizeof(trace_t));
 925         //To keep everything totally uniform, bounding boxes are turned into small
 926         //BSP trees instead of being compared directly.
 927         // create a temp hull from bounding box sizes
 928         box_planes[0].dist = cmaxs[0] - mins[0];
 929         box_planes[1].dist = cmins[0] - maxs[0];
 930         box_planes[2].dist = cmaxs[1] - mins[1];
 931         box_planes[3].dist = cmins[1] - maxs[1];
 932         box_planes[4].dist = cmaxs[2] - mins[2];
 933         box_planes[5].dist = cmins[2] - maxs[2];
 934 #if COLLISIONPARANOID >= 3
 935         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]);
 936 #endif
 937
 938         if (box_hull.clipnodes == NULL)
 939         {
 940                 int i, side;
 941
 942                 //Set up the planes and clipnodes so that the six floats of a bounding box
 943                 //can just be stored out and get a proper hull_t structure.
 944
 945                 box_hull.clipnodes = box_clipnodes;
 946                 box_hull.planes = box_planes;
 947                 box_hull.firstclipnode = 0;
 948                 box_hull.lastclipnode = 5;
 949
 950                 for (i = 0;i < 6;i++)
 951                 {
 952                         box_clipnodes[i].planenum = i;
 953
 954                         side = i&1;
 955
 956                         box_clipnodes[i].children[side] = CONTENTS_EMPTY;
 957                         if (i != 5)
 958                                 box_clipnodes[i].children[side^1] = i + 1;
 959                         else
 960                                 box_clipnodes[i].children[side^1] = CONTENTS_SOLID;
 961
 962                         box_planes[i].type = i>>1;
 963                         box_planes[i].normal[i>>1] = 1;
 964                 }
 965         }
 966
 967         // trace a line through the generated clipping hull
 968         //rhc.boxsupercontents = boxsupercontents;
 969         rhc.hull = &box_hull;
 970         rhc.trace = trace;
 971         rhc.trace->hitsupercontentsmask = hitsupercontentsmask;
 972         rhc.trace->fraction = 1;
 973         rhc.trace->realfraction = 1;
 974         rhc.trace->allsolid = true;
 975         VectorCopy(start, rhc.start);
 976         VectorCopy(end, rhc.end);
 977         VectorSubtract(rhc.end, rhc.start, rhc.dist);
 978         Mod_Q1BSP_RecursiveHullCheck(&rhc, rhc.hull->firstclipnode, 0, 1, rhc.start, rhc.end);
 979         //VectorMA(rhc.start, rhc.trace->fraction, rhc.dist, rhc.trace->endpos);
 980         if (rhc.trace->startsupercontents)
 981                 rhc.trace->startsupercontents = boxsupercontents;
 982 #endif
 983 }
 984
 985 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)
 986 {
 987         int side;
 988         float front, back;
 989         float mid, distz = endz - startz;
 990
 991 loc0:
 992         if (!node->plane)
 993                 return false;           // didn't hit anything
 994
 995         switch (node->plane->type)
 996         {
 997         case PLANE_X:
 998                 node = node->children[x < node->plane->dist];
 999                 goto loc0;
1000         case PLANE_Y:
1001                 node = node->children[y < node->plane->dist];
1002                 goto loc0;
1003         case PLANE_Z:
1004                 side = startz < node->plane->dist;
1005                 if ((endz < node->plane->dist) == side)
1006                 {
1007                         node = node->children[side];
1008                         goto loc0;
1009                 }
1010                 // found an intersection
1011                 mid = node->plane->dist;
1012                 break;
1013         default:
1014                 back = front = x * node->plane->normal[0] + y * node->plane->normal[1];
1015                 front += startz * node->plane->normal[2];
1016                 back += endz * node->plane->normal[2];
1017                 side = front < node->plane->dist;
1018                 if ((back < node->plane->dist) == side)
1019                 {
1020                         node = node->children[side];
1021                         goto loc0;
1022                 }
1023                 // found an intersection
1024                 mid = startz + distz * (front - node->plane->dist) / (front - back);
1025                 break;
1026         }
1027
1028         // go down front side
1029         if (node->children[side]->plane && Mod_Q1BSP_LightPoint_RecursiveBSPNode(model, ambientcolor, diffusecolor, diffusenormal, node->children[side], x, y, startz, mid))
1030                 return true;    // hit something
1031         else
1032         {
1033                 // check for impact on this node
1034                 if (node->numsurfaces)
1035                 {
1036                         int i, ds, dt;
1037                         msurface_t *surface;
1038
1039                         surface = model->data_surfaces + node->firstsurface;
1040                         for (i = 0;i < node->numsurfaces;i++, surface++)
1041                         {
1042                                 if (!(surface->texture->basematerialflags & MATERIALFLAG_WALL) || !surface->lightmapinfo->samples)
1043                                         continue;       // no lightmaps
1044
1045                                 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];
1046                                 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];
1047
1048                                 if (ds >= 0 && ds < surface->lightmapinfo->extents[0] && dt >= 0 && dt < surface->lightmapinfo->extents[1])
1049                                 {
1050                                         unsigned char *lightmap;
1051                                         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;
1052                                         lmwidth = ((surface->lightmapinfo->extents[0]>>4)+1);
1053                                         lmheight = ((surface->lightmapinfo->extents[1]>>4)+1);
1054                                         line3 = lmwidth * 3; // LordHavoc: *3 for colored lighting
1055                                         size3 = lmwidth * lmheight * 3; // LordHavoc: *3 for colored lighting
1056
1057                                         lightmap = surface->lightmapinfo->samples + ((dt>>4) * lmwidth + (ds>>4))*3; // LordHavoc: *3 for colored lighting
1058
1059                                         for (maps = 0;maps < MAXLIGHTMAPS && surface->lightmapinfo->styles[maps] != 255;maps++)
1060                                         {
1061                                                 scale = r_refdef.lightstylevalue[surface->lightmapinfo->styles[maps]];
1062                                                 r00 += lightmap[      0] * scale;g00 += lightmap[      1] * scale;b00 += lightmap[      2] * scale;
1063                                                 r01 += lightmap[      3] * scale;g01 += lightmap[      4] * scale;b01 += lightmap[      5] * scale;
1064                                                 r10 += lightmap[line3+0] * scale;g10 += lightmap[line3+1] * scale;b10 += lightmap[line3+2] * scale;
1065                                                 r11 += lightmap[line3+3] * scale;g11 += lightmap[line3+4] * scale;b11 += lightmap[line3+5] * scale;
1066                                                 lightmap += size3;
1067                                         }
1068
1069 /*
1070 LordHavoc: here's the readable version of the interpolation
1071 code, not quite as easy for the compiler to optimize...
1072
1073 dsfrac is the X position in the lightmap pixel, * 16
1074 dtfrac is the Y position in the lightmap pixel, * 16
1075 r00 is top left corner, r01 is top right corner
1076 r10 is bottom left corner, r11 is bottom right corner
1077 g and b are the same layout.
1078 r0 and r1 are the top and bottom intermediate results
1079
1080 first we interpolate the top two points, to get the top
1081 edge sample
1082
1083         r0 = (((r01-r00) * dsfrac) >> 4) + r00;
1084         g0 = (((g01-g00) * dsfrac) >> 4) + g00;
1085         b0 = (((b01-b00) * dsfrac) >> 4) + b00;
1086
1087 then we interpolate the bottom two points, to get the
1088 bottom edge sample
1089
1090         r1 = (((r11-r10) * dsfrac) >> 4) + r10;
1091         g1 = (((g11-g10) * dsfrac) >> 4) + g10;
1092         b1 = (((b11-b10) * dsfrac) >> 4) + b10;
1093
1094 then we interpolate the top and bottom samples to get the
1095 middle sample (the one which was requested)
1096
1097         r = (((r1-r0) * dtfrac) >> 4) + r0;
1098         g = (((g1-g0) * dtfrac) >> 4) + g0;
1099         b = (((b1-b0) * dtfrac) >> 4) + b0;
1100 */
1101
1102                                         ambientcolor[0] += (float) ((((((((r11-r10) * dsfrac) >> 4) + r10)-((((r01-r00) * dsfrac) >> 4) + r00)) * dtfrac) >> 4) + ((((r01-r00) * dsfrac) >> 4) + r00)) * (1.0f / 32768.0f);
1103                                         ambientcolor[1] += (float) ((((((((g11-g10) * dsfrac) >> 4) + g10)-((((g01-g00) * dsfrac) >> 4) + g00)) * dtfrac) >> 4) + ((((g01-g00) * dsfrac) >> 4) + g00)) * (1.0f / 32768.0f);
1104                                         ambientcolor[2] += (float) ((((((((b11-b10) * dsfrac) >> 4) + b10)-((((b01-b00) * dsfrac) >> 4) + b00)) * dtfrac) >> 4) + ((((b01-b00) * dsfrac) >> 4) + b00)) * (1.0f / 32768.0f);
1105                                         return true; // success
1106                                 }
1107                         }
1108                 }
1109
1110                 // go down back side
1111                 node = node->children[side ^ 1];
1112                 startz = mid;
1113                 distz = endz - startz;
1114                 goto loc0;
1115         }
1116 }
1117
1118 void Mod_Q1BSP_LightPoint(model_t *model, const vec3_t p, vec3_t ambientcolor, vec3_t diffusecolor, vec3_t diffusenormal)
1119 {
1120         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);
1121         VectorSet(diffusenormal, 0, 0, -1);
1122 }
1123
1124 static void Mod_Q1BSP_DecompressVis(const unsigned char *in, const unsigned char *inend, unsigned char *out, unsigned char *outend)
1125 {
1126         int c;
1127         unsigned char *outstart = out;
1128         while (out < outend)
1129         {
1130                 if (in == inend)
1131                 {
1132                         Con_Printf("Mod_Q1BSP_DecompressVis: input underrun on model \"%s\" (decompressed %i of %i output bytes)\n", loadmodel->name, out - outstart, outend - outstart);
1133                         return;
1134                 }
1135                 c = *in++;
1136                 if (c)
1137                         *out++ = c;
1138                 else
1139                 {
1140                         if (in == inend)
1141                         {
1142                                 Con_Printf("Mod_Q1BSP_DecompressVis: input underrun (during zero-run) on model \"%s\" (decompressed %i of %i output bytes)\n", loadmodel->name, out - outstart, outend - outstart);
1143                                 return;
1144                         }
1145                         for (c = *in++;c > 0;c--)
1146                         {
1147                                 if (out == outend)
1148                                 {
1149                                         Con_Printf("Mod_Q1BSP_DecompressVis: output overrun on model \"%s\" (decompressed %i of %i output bytes)\n", loadmodel->name, out - outstart, outend - outstart);
1150                                         return;
1151                                 }
1152                                 *out++ = 0;
1153                         }
1154                 }
1155         }
1156 }
1157
1158 /*
1159 =============
1160 R_Q1BSP_LoadSplitSky
1161
1162 A sky texture is 256*128, with the right side being a masked overlay
1163 ==============
1164 */
1165 void R_Q1BSP_LoadSplitSky (unsigned char *src, int width, int height, int bytesperpixel)
1166 {
1167         int i, j;
1168         unsigned solidpixels[128*128], alphapixels[128*128];
1169
1170         // if sky isn't the right size, just use it as a solid layer
1171         if (width != 256 || height != 128)
1172         {
1173                 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);
1174                 loadmodel->brush.alphaskytexture = NULL;
1175                 return;
1176         }
1177
1178         if (bytesperpixel == 4)
1179         {
1180                 for (i = 0;i < 128;i++)
1181                 {
1182                         for (j = 0;j < 128;j++)
1183                         {
1184                                 solidpixels[(i*128) + j] = ((unsigned *)src)[i*256+j+128];
1185                                 alphapixels[(i*128) + j] = ((unsigned *)src)[i*256+j];
1186                         }
1187                 }
1188         }
1189         else
1190         {
1191                 // make an average value for the back to avoid
1192                 // a fringe on the top level
1193                 int p, r, g, b;
1194                 union
1195                 {
1196                         unsigned int i;
1197                         unsigned char b[4];
1198                 }
1199                 rgba;
1200                 r = g = b = 0;
1201                 for (i = 0;i < 128;i++)
1202                 {
1203                         for (j = 0;j < 128;j++)
1204                         {
1205                                 rgba.i = palette_complete[src[i*256 + j + 128]];
1206                                 r += rgba.b[0];
1207                                 g += rgba.b[1];
1208                                 b += rgba.b[2];
1209                         }
1210                 }
1211                 rgba.b[0] = r/(128*128);
1212                 rgba.b[1] = g/(128*128);
1213                 rgba.b[2] = b/(128*128);
1214                 rgba.b[3] = 0;
1215                 for (i = 0;i < 128;i++)
1216                 {
1217                         for (j = 0;j < 128;j++)
1218                         {
1219                                 solidpixels[(i*128) + j] = palette_complete[src[i*256 + j + 128]];
1220                                 alphapixels[(i*128) + j] = (p = src[i*256 + j]) ? palette_complete[p] : rgba.i;
1221                         }
1222                 }
1223         }
1224
1225         loadmodel->brush.solidskytexture = R_LoadTexture2D(loadmodel->texturepool, "sky_solidtexture", 128, 128, (unsigned char *) solidpixels, TEXTYPE_RGBA, TEXF_PRECACHE, NULL);
1226         loadmodel->brush.alphaskytexture = R_LoadTexture2D(loadmodel->texturepool, "sky_alphatexture", 128, 128, (unsigned char *) alphapixels, TEXTYPE_RGBA, TEXF_ALPHA | TEXF_PRECACHE, NULL);
1227 }
1228
1229 static void Mod_Q1BSP_LoadTextures(lump_t *l)
1230 {
1231         int i, j, k, num, max, altmax, mtwidth, mtheight, *dofs, incomplete;
1232         miptex_t *dmiptex;
1233         texture_t *tx, *tx2, *anims[10], *altanims[10];
1234         dmiptexlump_t *m;
1235         unsigned char *data, *mtdata;
1236         const char *s;
1237         char mapname[MAX_QPATH], name[MAX_QPATH];
1238
1239         loadmodel->data_textures = NULL;
1240
1241         // add two slots for notexture walls and notexture liquids
1242         if (l->filelen)
1243         {
1244                 m = (dmiptexlump_t *)(mod_base + l->fileofs);
1245                 m->nummiptex = LittleLong (m->nummiptex);
1246                 loadmodel->num_textures = m->nummiptex + 2;
1247         }
1248         else
1249         {
1250                 m = NULL;
1251                 loadmodel->num_textures = 2;
1252         }
1253
1254         loadmodel->data_textures = (texture_t *)Mem_Alloc(loadmodel->mempool, loadmodel->num_textures * sizeof(texture_t));
1255
1256         // fill out all slots with notexture
1257         for (i = 0, tx = loadmodel->data_textures;i < loadmodel->num_textures;i++, tx++)
1258         {
1259                 strlcpy(tx->name, "NO TEXTURE FOUND", sizeof(tx->name));
1260                 tx->width = 16;
1261                 tx->height = 16;
1262                 tx->skin.base = r_texture_notexture;
1263                 tx->basematerialflags = 0;
1264                 if (i == loadmodel->num_textures - 1)
1265                 {
1266                         tx->basematerialflags |= MATERIALFLAG_WATER | MATERIALFLAG_LIGHTBOTHSIDES;
1267                         tx->supercontents = mod_q1bsp_texture_water.supercontents;
1268                         tx->surfaceflags = mod_q1bsp_texture_water.surfaceflags;
1269                 }
1270                 else
1271                 {
1272                         tx->basematerialflags |= MATERIALFLAG_WALL;
1273                         tx->supercontents = mod_q1bsp_texture_solid.supercontents;
1274                         tx->surfaceflags = mod_q1bsp_texture_solid.surfaceflags;
1275                 }
1276                 tx->currentframe = tx;
1277         }
1278
1279         if (!m)
1280                 return;
1281
1282         s = loadmodel->name;
1283         if (!strncasecmp(s, "maps/", 5))
1284                 s += 5;
1285         FS_StripExtension(s, mapname, sizeof(mapname));
1286
1287         // just to work around bounds checking when debugging with it (array index out of bounds error thing)
1288         dofs = m->dataofs;
1289         // LordHavoc: mostly rewritten map texture loader
1290         for (i = 0;i < m->nummiptex;i++)
1291         {
1292                 dofs[i] = LittleLong(dofs[i]);
1293                 if (dofs[i] == -1 || r_nosurftextures.integer)
1294                         continue;
1295                 dmiptex = (miptex_t *)((unsigned char *)m + dofs[i]);
1296
1297                 // make sure name is no more than 15 characters
1298                 for (j = 0;dmiptex->name[j] && j < 15;j++)
1299                         name[j] = dmiptex->name[j];
1300                 name[j] = 0;
1301
1302                 mtwidth = LittleLong(dmiptex->width);
1303                 mtheight = LittleLong(dmiptex->height);
1304                 mtdata = NULL;
1305                 j = LittleLong(dmiptex->offsets[0]);
1306                 if (j)
1307                 {
1308                         // texture included
1309                         if (j < 40 || j + mtwidth * mtheight > l->filelen)
1310                         {
1311                                 Con_Printf("Texture \"%s\" in \"%s\"is corrupt or incomplete\n", dmiptex->name, loadmodel->name);
1312                                 continue;
1313                         }
1314                         mtdata = (unsigned char *)dmiptex + j;
1315                 }
1316
1317                 if ((mtwidth & 15) || (mtheight & 15))
1318                         Con_Printf("warning: texture \"%s\" in \"%s\" is not 16 aligned\n", dmiptex->name, loadmodel->name);
1319
1320                 // LordHavoc: force all names to lowercase
1321                 for (j = 0;name[j];j++)
1322                         if (name[j] >= 'A' && name[j] <= 'Z')
1323                                 name[j] += 'a' - 'A';
1324
1325                 tx = loadmodel->data_textures + i;
1326                 strlcpy(tx->name, name, sizeof(tx->name));
1327                 tx->width = mtwidth;
1328                 tx->height = mtheight;
1329
1330                 if (!tx->name[0])
1331                 {
1332                         sprintf(tx->name, "unnamed%i", i);
1333                         Con_Printf("warning: unnamed texture in %s, renaming to %s\n", loadmodel->name, tx->name);
1334                 }
1335
1336                 if (cls.state != ca_dedicated)
1337                 {
1338                         // LordHavoc: HL sky textures are entirely different than quake
1339                         if (!loadmodel->brush.ishlbsp && !strncmp(tx->name, "sky", 3) && mtwidth == 256 && mtheight == 128)
1340                         {
1341                                 if (loadmodel->isworldmodel)
1342                                 {
1343                                         data = loadimagepixels(tx->name, false, 0, 0);
1344                                         if (data)
1345                                         {
1346                                                 R_Q1BSP_LoadSplitSky(data, image_width, image_height, 4);
1347                                                 Mem_Free(data);
1348                                         }
1349                                         else if (mtdata != NULL)
1350                                                 R_Q1BSP_LoadSplitSky(mtdata, mtwidth, mtheight, 1);
1351                                 }
1352                         }
1353                         else
1354                         {
1355                                 if (!Mod_LoadSkinFrame(&tx->skin, gamemode == GAME_TENEBRAE ? tx->name : va("textures/%s/%s", mapname, tx->name), TEXF_MIPMAP | TEXF_ALPHA | TEXF_PRECACHE | TEXF_PICMIP, false, true)
1356                                  && !Mod_LoadSkinFrame(&tx->skin, gamemode == GAME_TENEBRAE ? tx->name : va("textures/%s", tx->name), TEXF_MIPMAP | TEXF_ALPHA | TEXF_PRECACHE | TEXF_PICMIP, false, true))
1357                                 {
1358                                         // did not find external texture, load it from the bsp or wad3
1359                                         if (loadmodel->brush.ishlbsp)
1360                                         {
1361                                                 // internal texture overrides wad
1362                                                 unsigned char *pixels, *freepixels;
1363                                                 pixels = freepixels = NULL;
1364                                                 if (mtdata)
1365                                                         pixels = W_ConvertWAD3Texture(dmiptex);
1366                                                 if (pixels == NULL)
1367                                                         pixels = freepixels = W_GetTexture(tx->name);
1368                                                 if (pixels != NULL)
1369                                                 {
1370                                                         tx->width = image_width;
1371                                                         tx->height = image_height;
1372                                                         Mod_LoadSkinFrame_Internal(&tx->skin, tx->name, TEXF_MIPMAP | TEXF_ALPHA | TEXF_PRECACHE | TEXF_PICMIP, false, false, pixels, image_width, image_height, 32, NULL, NULL);
1373                                                 }
1374                                                 if (freepixels)
1375                                                         Mem_Free(freepixels);
1376                                         }
1377                                         else if (mtdata) // texture included
1378                                                 Mod_LoadSkinFrame_Internal(&tx->skin, tx->name, TEXF_MIPMAP | TEXF_PRECACHE | TEXF_PICMIP, false, r_fullbrights.integer, mtdata, tx->width, tx->height, 8, NULL, NULL);
1379                                 }
1380                         }
1381                         if (tx->skin.base == NULL)
1382                         {
1383                                 // no texture found
1384                                 tx->width = 16;
1385                                 tx->height = 16;
1386                                 tx->skin.base = r_texture_notexture;
1387                         }
1388                 }
1389
1390                 tx->basematerialflags = 0;
1391                 if (tx->name[0] == '*')
1392                 {
1393                         // LordHavoc: some turbulent textures should not be affected by wateralpha
1394                         if (strncmp(tx->name,"*lava",5)
1395                          && strncmp(tx->name,"*teleport",9)
1396                          && strncmp(tx->name,"*rift",5)) // Scourge of Armagon texture
1397                                 tx->basematerialflags |= MATERIALFLAG_WATERALPHA;
1398                         if (!strncmp(tx->name, "*lava", 5))
1399                         {
1400                                 tx->supercontents = mod_q1bsp_texture_lava.supercontents;
1401                                 tx->surfaceflags = mod_q1bsp_texture_lava.surfaceflags;
1402                         }
1403                         else if (!strncmp(tx->name, "*slime", 6))
1404                         {
1405                                 tx->supercontents = mod_q1bsp_texture_slime.supercontents;
1406                                 tx->surfaceflags = mod_q1bsp_texture_slime.surfaceflags;
1407                         }
1408                         else
1409                         {
1410                                 tx->supercontents = mod_q1bsp_texture_water.supercontents;
1411                                 tx->surfaceflags = mod_q1bsp_texture_water.surfaceflags;
1412                         }
1413                         tx->basematerialflags |= MATERIALFLAG_WATER | MATERIALFLAG_LIGHTBOTHSIDES;
1414                 }
1415                 else if (tx->name[0] == 's' && tx->name[1] == 'k' && tx->name[2] == 'y')
1416                 {
1417                         tx->supercontents = mod_q1bsp_texture_sky.supercontents;
1418                         tx->surfaceflags = mod_q1bsp_texture_sky.surfaceflags;
1419                         tx->basematerialflags |= MATERIALFLAG_SKY;
1420                 }
1421                 else
1422                 {
1423                         tx->supercontents = mod_q1bsp_texture_solid.supercontents;
1424                         tx->surfaceflags = mod_q1bsp_texture_solid.surfaceflags;
1425                         tx->basematerialflags |= MATERIALFLAG_WALL;
1426                 }
1427                 if (tx->skin.fog)
1428                         tx->basematerialflags |= MATERIALFLAG_ALPHA | MATERIALFLAG_BLENDED | MATERIALFLAG_TRANSPARENT;
1429
1430                 // start out with no animation
1431                 tx->currentframe = tx;
1432         }
1433
1434         // sequence the animations
1435         for (i = 0;i < m->nummiptex;i++)
1436         {
1437                 tx = loadmodel->data_textures + i;
1438                 if (!tx || tx->name[0] != '+' || tx->name[1] == 0 || tx->name[2] == 0)
1439                         continue;
1440                 if (tx->anim_total[0] || tx->anim_total[1])
1441                         continue;       // already sequenced
1442
1443                 // find the number of frames in the animation
1444                 memset(anims, 0, sizeof(anims));
1445                 memset(altanims, 0, sizeof(altanims));
1446
1447                 for (j = i;j < m->nummiptex;j++)
1448                 {
1449                         tx2 = loadmodel->data_textures + j;
1450                         if (!tx2 || tx2->name[0] != '+' || strcmp(tx2->name+2, tx->name+2))
1451                                 continue;
1452
1453                         num = tx2->name[1];
1454                         if (num >= '0' && num <= '9')
1455                                 anims[num - '0'] = tx2;
1456                         else if (num >= 'a' && num <= 'j')
1457                                 altanims[num - 'a'] = tx2;
1458                         else
1459                                 Con_Printf("Bad animating texture %s\n", tx->name);
1460                 }
1461
1462                 max = altmax = 0;
1463                 for (j = 0;j < 10;j++)
1464                 {
1465                         if (anims[j])
1466                                 max = j + 1;
1467                         if (altanims[j])
1468                                 altmax = j + 1;
1469                 }
1470                 //Con_Printf("linking animation %s (%i:%i frames)\n\n", tx->name, max, altmax);
1471
1472                 incomplete = false;
1473                 for (j = 0;j < max;j++)
1474                 {
1475                         if (!anims[j])
1476                         {
1477                                 Con_Printf("Missing frame %i of %s\n", j, tx->name);
1478                                 incomplete = true;
1479                         }
1480                 }
1481                 for (j = 0;j < altmax;j++)
1482                 {
1483                         if (!altanims[j])
1484                         {
1485                                 Con_Printf("Missing altframe %i of %s\n", j, tx->name);
1486                                 incomplete = true;
1487                         }
1488                 }
1489                 if (incomplete)
1490                         continue;
1491
1492                 if (altmax < 1)
1493                 {
1494                         // if there is no alternate animation, duplicate the primary
1495                         // animation into the alternate
1496                         altmax = max;
1497                         for (k = 0;k < 10;k++)
1498                                 altanims[k] = anims[k];
1499                 }
1500
1501                 // link together the primary animation
1502                 for (j = 0;j < max;j++)
1503                 {
1504                         tx2 = anims[j];
1505                         tx2->animated = true;
1506                         tx2->anim_total[0] = max;
1507                         tx2->anim_total[1] = altmax;
1508                         for (k = 0;k < 10;k++)
1509                         {
1510                                 tx2->anim_frames[0][k] = anims[k];
1511                                 tx2->anim_frames[1][k] = altanims[k];
1512                         }
1513                 }
1514
1515                 // if there really is an alternate anim...
1516                 if (anims[0] != altanims[0])
1517                 {
1518                         // link together the alternate animation
1519                         for (j = 0;j < altmax;j++)
1520                         {
1521                                 tx2 = altanims[j];
1522                                 tx2->animated = true;
1523                                 // the primary/alternate are reversed here
1524                                 tx2->anim_total[0] = altmax;
1525                                 tx2->anim_total[1] = max;
1526                                 for (k = 0;k < 10;k++)
1527                                 {
1528                                         tx2->anim_frames[0][k] = altanims[k];
1529                                         tx2->anim_frames[1][k] = anims[k];
1530                                 }
1531                         }
1532                 }
1533         }
1534 }
1535
1536 static void Mod_Q1BSP_LoadLighting(lump_t *l)
1537 {
1538         int i;
1539         unsigned char *in, *out, *data, d;
1540         char litfilename[MAX_QPATH];
1541         char dlitfilename[MAX_QPATH];
1542         fs_offset_t filesize;
1543         if (loadmodel->brush.ishlbsp) // LordHavoc: load the colored lighting data straight
1544         {
1545                 loadmodel->brushq1.lightdata = (unsigned char *)Mem_Alloc(loadmodel->mempool, l->filelen);
1546                 for (i=0; i<l->filelen; i++)
1547                         loadmodel->brushq1.lightdata[i] = mod_base[l->fileofs+i] >>= 1;
1548         }
1549         else if (loadmodel->brush.ismcbsp)
1550         {
1551                 loadmodel->brushq1.lightdata = (unsigned char *)Mem_Alloc(loadmodel->mempool, l->filelen);
1552                 memcpy(loadmodel->brushq1.lightdata, mod_base + l->fileofs, l->filelen);
1553         }
1554         else // LordHavoc: bsp version 29 (normal white lighting)
1555         {
1556                 // LordHavoc: hope is not lost yet, check for a .lit file to load
1557                 strlcpy (litfilename, loadmodel->name, sizeof (litfilename));
1558                 FS_StripExtension (litfilename, litfilename, sizeof (litfilename));
1559                 strlcpy (dlitfilename, litfilename, sizeof (dlitfilename));
1560                 strlcat (litfilename, ".lit", sizeof (litfilename));
1561                 strlcat (dlitfilename, ".dlit", sizeof (dlitfilename));
1562                 data = (unsigned char*) FS_LoadFile(litfilename, tempmempool, false, &filesize);
1563                 if (data)
1564                 {
1565                         if (filesize == (fs_offset_t)(8 + l->filelen * 3) && data[0] == 'Q' && data[1] == 'L' && data[2] == 'I' && data[3] == 'T')
1566                         {
1567                                 i = LittleLong(((int *)data)[1]);
1568                                 if (i == 1)
1569                                 {
1570                                         Con_DPrintf("loaded %s\n", litfilename);
1571                                         loadmodel->brushq1.lightdata = (unsigned char *)Mem_Alloc(loadmodel->mempool, filesize - 8);
1572                                         memcpy(loadmodel->brushq1.lightdata, data + 8, filesize - 8);
1573                                         Mem_Free(data);
1574                                         data = (unsigned char*) FS_LoadFile(dlitfilename, tempmempool, false, &filesize);
1575                                         if (data)
1576                                         {
1577                                                 if (filesize == (fs_offset_t)(8 + l->filelen * 3) && data[0] == 'Q' && data[1] == 'L' && data[2] == 'I' && data[3] == 'T')
1578                                                 {
1579                                                         i = LittleLong(((int *)data)[1]);
1580                                                         if (i == 1)
1581                                                         {
1582                                                                 Con_DPrintf("loaded %s\n", dlitfilename);
1583                                                                 loadmodel->brushq1.nmaplightdata = (unsigned char *)Mem_Alloc(loadmodel->mempool, filesize - 8);
1584                                                                 memcpy(loadmodel->brushq1.nmaplightdata, data + 8, filesize - 8);
1585                                                                 loadmodel->brushq3.deluxemapping_modelspace = false;
1586                                                                 loadmodel->brushq3.deluxemapping = true;
1587                                                         }
1588                                                 }
1589                                                 Mem_Free(data);
1590                                                 data = NULL;
1591                                         }
1592                                         return;
1593                                 }
1594                                 else
1595                                         Con_Printf("Unknown .lit file version (%d)\n", i);
1596                         }
1597                         else if (filesize == 8)
1598                                 Con_Print("Empty .lit file, ignoring\n");
1599                         else
1600                                 Con_Printf("Corrupt .lit file (file size %i bytes, should be %i bytes), ignoring\n", filesize, 8 + l->filelen * 3);
1601                         if (data)
1602                         {
1603                                 Mem_Free(data);
1604                                 data = NULL;
1605                         }
1606                 }
1607                 // LordHavoc: oh well, expand the white lighting data
1608                 if (!l->filelen)
1609                         return;
1610                 loadmodel->brushq1.lightdata = (unsigned char *)Mem_Alloc(loadmodel->mempool, l->filelen*3);
1611                 in = mod_base + l->fileofs;
1612                 out = loadmodel->brushq1.lightdata;
1613                 for (i = 0;i < l->filelen;i++)
1614                 {
1615                         d = *in++;
1616                         *out++ = d;
1617                         *out++ = d;
1618                         *out++ = d;
1619                 }
1620         }
1621 }
1622
1623 static void Mod_Q1BSP_LoadVisibility(lump_t *l)
1624 {
1625         loadmodel->brushq1.num_compressedpvs = 0;
1626         loadmodel->brushq1.data_compressedpvs = NULL;
1627         if (!l->filelen)
1628                 return;
1629         loadmodel->brushq1.num_compressedpvs = l->filelen;
1630         loadmodel->brushq1.data_compressedpvs = (unsigned char *)Mem_Alloc(loadmodel->mempool, l->filelen);
1631         memcpy(loadmodel->brushq1.data_compressedpvs, mod_base + l->fileofs, l->filelen);
1632 }
1633
1634 // used only for HalfLife maps
1635 static void Mod_Q1BSP_ParseWadsFromEntityLump(const char *data)
1636 {
1637         char key[128], value[4096];
1638         char wadname[128];
1639         int i, j, k;
1640         if (!data)
1641                 return;
1642         if (!COM_ParseTokenConsole(&data))
1643                 return; // error
1644         if (com_token[0] != '{')
1645                 return; // error
1646         while (1)
1647         {
1648                 if (!COM_ParseTokenConsole(&data))
1649                         return; // error
1650                 if (com_token[0] == '}')
1651                         break; // end of worldspawn
1652                 if (com_token[0] == '_')
1653                         strlcpy(key, com_token + 1, sizeof(key));
1654                 else
1655                         strlcpy(key, com_token, sizeof(key));
1656                 while (key[strlen(key)-1] == ' ') // remove trailing spaces
1657                         key[strlen(key)-1] = 0;
1658                 if (!COM_ParseTokenConsole(&data))
1659                         return; // error
1660                 dpsnprintf(value, sizeof(value), "%s", com_token);
1661                 if (!strcmp("wad", key)) // for HalfLife maps
1662                 {
1663                         if (loadmodel->brush.ishlbsp)
1664                         {
1665                                 j = 0;
1666                                 for (i = 0;i < (int)sizeof(value);i++)
1667                                         if (value[i] != ';' && value[i] != '\\' && value[i] != '/' && value[i] != ':')
1668                                                 break;
1669                                 if (value[i])
1670                                 {
1671                                         for (;i < (int)sizeof(value);i++)
1672                                         {
1673                                                 // ignore path - the \\ check is for HalfLife... stupid windoze 'programmers'...
1674                                                 if (value[i] == '\\' || value[i] == '/' || value[i] == ':')
1675                                                         j = i+1;
1676                                                 else if (value[i] == ';' || value[i] == 0)
1677                                                 {
1678                                                         k = value[i];
1679                                                         value[i] = 0;
1680                                                         strlcpy(wadname, "textures/", sizeof(wadname));
1681                                                         strlcat(wadname, &value[j], sizeof(wadname));
1682                                                         W_LoadTextureWadFile(wadname, false);
1683                                                         j = i+1;
1684                                                         if (!k)
1685                                                                 break;
1686                                                 }
1687                                         }
1688                                 }
1689                         }
1690                 }
1691         }
1692 }
1693
1694 static void Mod_Q1BSP_LoadEntities(lump_t *l)
1695 {
1696         loadmodel->brush.entities = NULL;
1697         if (!l->filelen)
1698                 return;
1699         loadmodel->brush.entities = (char *)Mem_Alloc(loadmodel->mempool, l->filelen);
1700         memcpy(loadmodel->brush.entities, mod_base + l->fileofs, l->filelen);
1701         if (loadmodel->brush.ishlbsp)
1702                 Mod_Q1BSP_ParseWadsFromEntityLump(loadmodel->brush.entities);
1703 }
1704
1705
1706 static void Mod_Q1BSP_LoadVertexes(lump_t *l)
1707 {
1708         dvertex_t       *in;
1709         mvertex_t       *out;
1710         int                     i, count;
1711
1712         in = (dvertex_t *)(mod_base + l->fileofs);
1713         if (l->filelen % sizeof(*in))
1714                 Host_Error("Mod_Q1BSP_LoadVertexes: funny lump size in %s",loadmodel->name);
1715         count = l->filelen / sizeof(*in);
1716         out = (mvertex_t *)Mem_Alloc(loadmodel->mempool, count*sizeof(*out));
1717
1718         loadmodel->brushq1.vertexes = out;
1719         loadmodel->brushq1.numvertexes = count;
1720
1721         for ( i=0 ; i<count ; i++, in++, out++)
1722         {
1723                 out->position[0] = LittleFloat(in->point[0]);
1724                 out->position[1] = LittleFloat(in->point[1]);
1725                 out->position[2] = LittleFloat(in->point[2]);
1726         }
1727 }
1728
1729 // The following two functions should be removed and MSG_* or SZ_* function sets adjusted so they
1730 // can be used for this
1731 // REMOVEME
1732 int SB_ReadInt (unsigned char **buffer)
1733 {
1734         int     i;
1735         i = ((*buffer)[0]) + 256*((*buffer)[1]) + 65536*((*buffer)[2]) + 16777216*((*buffer)[3]);
1736         (*buffer) += 4;
1737         return i;
1738 }
1739
1740 // REMOVEME
1741 float SB_ReadFloat (unsigned char **buffer)
1742 {
1743         union
1744         {
1745                 int             i;
1746                 float   f;
1747         } u;
1748
1749         u.i = SB_ReadInt (buffer);
1750         return u.f;
1751 }
1752
1753 static void Mod_Q1BSP_LoadSubmodels(lump_t *l, hullinfo_t *hullinfo)
1754 {
1755         unsigned char           *index;
1756         dmodel_t        *out;
1757         int                     i, j, count;
1758
1759         index = (unsigned char *)(mod_base + l->fileofs);
1760         if (l->filelen % (48+4*hullinfo->filehulls))
1761                 Host_Error ("Mod_Q1BSP_LoadSubmodels: funny lump size in %s", loadmodel->name);
1762
1763         count = l->filelen / (48+4*hullinfo->filehulls);
1764         out = (dmodel_t *)Mem_Alloc (loadmodel->mempool, count*sizeof(*out));
1765
1766         loadmodel->brushq1.submodels = out;
1767         loadmodel->brush.numsubmodels = count;
1768
1769         for (i = 0; i < count; i++, out++)
1770         {
1771         // spread out the mins / maxs by a pixel
1772                 out->mins[0] = SB_ReadFloat (&index) - 1;
1773                 out->mins[1] = SB_ReadFloat (&index) - 1;
1774                 out->mins[2] = SB_ReadFloat (&index) - 1;
1775                 out->maxs[0] = SB_ReadFloat (&index) + 1;
1776                 out->maxs[1] = SB_ReadFloat (&index) + 1;
1777                 out->maxs[2] = SB_ReadFloat (&index) + 1;
1778                 out->origin[0] = SB_ReadFloat (&index);
1779                 out->origin[1] = SB_ReadFloat (&index);
1780                 out->origin[2] = SB_ReadFloat (&index);
1781                 for (j = 0; j < hullinfo->filehulls; j++)
1782                         out->headnode[j] = SB_ReadInt (&index);
1783                 out->visleafs = SB_ReadInt (&index);
1784                 out->firstface = SB_ReadInt (&index);
1785                 out->numfaces = SB_ReadInt (&index);
1786         }
1787 }
1788
1789 static void Mod_Q1BSP_LoadEdges(lump_t *l)
1790 {
1791         dedge_t *in;
1792         medge_t *out;
1793         int     i, count;
1794
1795         in = (dedge_t *)(mod_base + l->fileofs);
1796         if (l->filelen % sizeof(*in))
1797                 Host_Error("Mod_Q1BSP_LoadEdges: funny lump size in %s",loadmodel->name);
1798         count = l->filelen / sizeof(*in);
1799         out = (medge_t *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
1800
1801         loadmodel->brushq1.edges = out;
1802         loadmodel->brushq1.numedges = count;
1803
1804         for ( i=0 ; i<count ; i++, in++, out++)
1805         {
1806                 out->v[0] = (unsigned short)LittleShort(in->v[0]);
1807                 out->v[1] = (unsigned short)LittleShort(in->v[1]);
1808                 if (out->v[0] >= loadmodel->brushq1.numvertexes || out->v[1] >= loadmodel->brushq1.numvertexes)
1809                 {
1810                         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);
1811                         out->v[0] = 0;
1812                         out->v[1] = 0;
1813                 }
1814         }
1815 }
1816
1817 static void Mod_Q1BSP_LoadTexinfo(lump_t *l)
1818 {
1819         texinfo_t *in;
1820         mtexinfo_t *out;
1821         int i, j, k, count, miptex;
1822
1823         in = (texinfo_t *)(mod_base + l->fileofs);
1824         if (l->filelen % sizeof(*in))
1825                 Host_Error("Mod_Q1BSP_LoadTexinfo: funny lump size in %s",loadmodel->name);
1826         count = l->filelen / sizeof(*in);
1827         out = (mtexinfo_t *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
1828
1829         loadmodel->brushq1.texinfo = out;
1830         loadmodel->brushq1.numtexinfo = count;
1831
1832         for (i = 0;i < count;i++, in++, out++)
1833         {
1834                 for (k = 0;k < 2;k++)
1835                         for (j = 0;j < 4;j++)
1836                                 out->vecs[k][j] = LittleFloat(in->vecs[k][j]);
1837
1838                 miptex = LittleLong(in->miptex);
1839                 out->flags = LittleLong(in->flags);
1840
1841                 out->texture = NULL;
1842                 if (loadmodel->data_textures)
1843                 {
1844                         if ((unsigned int) miptex >= (unsigned int) loadmodel->num_textures)
1845                                 Con_Printf("error in model \"%s\": invalid miptex index %i(of %i)\n", loadmodel->name, miptex, loadmodel->num_textures);
1846                         else
1847                                 out->texture = loadmodel->data_textures + miptex;
1848                 }
1849                 if (out->flags & TEX_SPECIAL)
1850                 {
1851                         // if texture chosen is NULL or the shader needs a lightmap,
1852                         // force to notexture water shader
1853                         if (out->texture == NULL || out->texture->basematerialflags & MATERIALFLAG_WALL)
1854                                 out->texture = loadmodel->data_textures + (loadmodel->num_textures - 1);
1855                 }
1856                 else
1857                 {
1858                         // if texture chosen is NULL, force to notexture
1859                         if (out->texture == NULL)
1860                                 out->texture = loadmodel->data_textures + (loadmodel->num_textures - 2);
1861                 }
1862         }
1863 }
1864
1865 #if 0
1866 void BoundPoly(int numverts, float *verts, vec3_t mins, vec3_t maxs)
1867 {
1868         int             i, j;
1869         float   *v;
1870
1871         mins[0] = mins[1] = mins[2] = 9999;
1872         maxs[0] = maxs[1] = maxs[2] = -9999;
1873         v = verts;
1874         for (i = 0;i < numverts;i++)
1875         {
1876                 for (j = 0;j < 3;j++, v++)
1877                 {
1878                         if (*v < mins[j])
1879                                 mins[j] = *v;
1880                         if (*v > maxs[j])
1881                                 maxs[j] = *v;
1882                 }
1883         }
1884 }
1885
1886 #define MAX_SUBDIVPOLYTRIANGLES 4096
1887 #define MAX_SUBDIVPOLYVERTS(MAX_SUBDIVPOLYTRIANGLES * 3)
1888
1889 static int subdivpolyverts, subdivpolytriangles;
1890 static int subdivpolyindex[MAX_SUBDIVPOLYTRIANGLES][3];
1891 static float subdivpolyvert[MAX_SUBDIVPOLYVERTS][3];
1892
1893 static int subdivpolylookupvert(vec3_t v)
1894 {
1895         int i;
1896         for (i = 0;i < subdivpolyverts;i++)
1897                 if (subdivpolyvert[i][0] == v[0]
1898                  && subdivpolyvert[i][1] == v[1]
1899                  && subdivpolyvert[i][2] == v[2])
1900                         return i;
1901         if (subdivpolyverts >= MAX_SUBDIVPOLYVERTS)
1902                 Host_Error("SubDividePolygon: ran out of vertices in buffer, please increase your r_subdivide_size");
1903         VectorCopy(v, subdivpolyvert[subdivpolyverts]);
1904         return subdivpolyverts++;
1905 }
1906
1907 static void SubdividePolygon(int numverts, float *verts)
1908 {
1909         int             i, i1, i2, i3, f, b, c, p;
1910         vec3_t  mins, maxs, front[256], back[256];
1911         float   m, *pv, *cv, dist[256], frac;
1912
1913         if (numverts > 250)
1914                 Host_Error("SubdividePolygon: ran out of verts in buffer");
1915
1916         BoundPoly(numverts, verts, mins, maxs);
1917
1918         for (i = 0;i < 3;i++)
1919         {
1920                 m = (mins[i] + maxs[i]) * 0.5;
1921                 m = r_subdivide_size.value * floor(m/r_subdivide_size.value + 0.5);
1922                 if (maxs[i] - m < 8)
1923                         continue;
1924                 if (m - mins[i] < 8)
1925                         continue;
1926
1927                 // cut it
1928                 for (cv = verts, c = 0;c < numverts;c++, cv += 3)
1929                         dist[c] = cv[i] - m;
1930
1931                 f = b = 0;
1932                 for (p = numverts - 1, c = 0, pv = verts + p * 3, cv = verts;c < numverts;p = c, c++, pv = cv, cv += 3)
1933                 {
1934                         if (dist[p] >= 0)
1935                         {
1936                                 VectorCopy(pv, front[f]);
1937                                 f++;
1938                         }
1939                         if (dist[p] <= 0)
1940                         {
1941                                 VectorCopy(pv, back[b]);
1942                                 b++;
1943                         }
1944                         if (dist[p] == 0 || dist[c] == 0)
1945                                 continue;
1946                         if ((dist[p] > 0) != (dist[c] > 0) )
1947                         {
1948                                 // clip point
1949                                 frac = dist[p] / (dist[p] - dist[c]);
1950                                 front[f][0] = back[b][0] = pv[0] + frac * (cv[0] - pv[0]);
1951                                 front[f][1] = back[b][1] = pv[1] + frac * (cv[1] - pv[1]);
1952                                 front[f][2] = back[b][2] = pv[2] + frac * (cv[2] - pv[2]);
1953                                 f++;
1954                                 b++;
1955                         }
1956                 }
1957
1958                 SubdividePolygon(f, front[0]);
1959                 SubdividePolygon(b, back[0]);
1960                 return;
1961         }
1962
1963         i1 = subdivpolylookupvert(verts);
1964         i2 = subdivpolylookupvert(verts + 3);
1965         for (i = 2;i < numverts;i++)
1966         {
1967                 if (subdivpolytriangles >= MAX_SUBDIVPOLYTRIANGLES)
1968                 {
1969                         Con_Print("SubdividePolygon: ran out of triangles in buffer, please increase your r_subdivide_size\n");
1970                         return;
1971                 }
1972
1973                 i3 = subdivpolylookupvert(verts + i * 3);
1974                 subdivpolyindex[subdivpolytriangles][0] = i1;
1975                 subdivpolyindex[subdivpolytriangles][1] = i2;
1976                 subdivpolyindex[subdivpolytriangles][2] = i3;
1977                 i2 = i3;
1978                 subdivpolytriangles++;
1979         }
1980 }
1981
1982 //Breaks a polygon up along axial 64 unit
1983 //boundaries so that turbulent and sky warps
1984 //can be done reasonably.
1985 static void Mod_Q1BSP_GenerateWarpMesh(msurface_t *surface)
1986 {
1987         int i, j;
1988         surfvertex_t *v;
1989         surfmesh_t *mesh;
1990
1991         subdivpolytriangles = 0;
1992         subdivpolyverts = 0;
1993         SubdividePolygon(surface->num_vertices, (surface->mesh->data_vertex3f + 3 * surface->num_firstvertex));
1994         if (subdivpolytriangles < 1)
1995                 Host_Error("Mod_Q1BSP_GenerateWarpMesh: no triangles?");
1996
1997         surface->mesh = mesh = Mem_Alloc(loadmodel->mempool, sizeof(surfmesh_t) + subdivpolytriangles * sizeof(int[3]) + subdivpolyverts * sizeof(surfvertex_t));
1998         mesh->num_vertices = subdivpolyverts;
1999         mesh->num_triangles = subdivpolytriangles;
2000         mesh->vertex = (surfvertex_t *)(mesh + 1);
2001         mesh->index = (int *)(mesh->vertex + mesh->num_vertices);
2002         memset(mesh->vertex, 0, mesh->num_vertices * sizeof(surfvertex_t));
2003
2004         for (i = 0;i < mesh->num_triangles;i++)
2005                 for (j = 0;j < 3;j++)
2006                         mesh->index[i*3+j] = subdivpolyindex[i][j];
2007
2008         for (i = 0, v = mesh->vertex;i < subdivpolyverts;i++, v++)
2009         {
2010                 VectorCopy(subdivpolyvert[i], v->v);
2011                 v->st[0] = DotProduct(v->v, surface->lightmapinfo->texinfo->vecs[0]);
2012                 v->st[1] = DotProduct(v->v, surface->lightmapinfo->texinfo->vecs[1]);
2013         }
2014 }
2015 #endif
2016
2017 static qboolean Mod_Q1BSP_AllocLightmapBlock(int *lineused, int totalwidth, int totalheight, int blockwidth, int blockheight, int *outx, int *outy)
2018 {
2019         int y, x2, y2;
2020         int bestx = totalwidth, besty = 0;
2021         // find the left-most space we can find
2022         for (y = 0;y <= totalheight - blockheight;y++)
2023         {
2024                 x2 = 0;
2025                 for (y2 = 0;y2 < blockheight;y2++)
2026                         x2 = max(x2, lineused[y+y2]);
2027                 if (bestx > x2)
2028                 {
2029                         bestx = x2;
2030                         besty = y;
2031                 }
2032         }
2033         // if the best was not good enough, return failure
2034         if (bestx > totalwidth - blockwidth)
2035                 return false;
2036         // we found a good spot
2037         if (outx)
2038                 *outx = bestx;
2039         if (outy)
2040                 *outy = besty;
2041         // now mark the space used
2042         for (y2 = 0;y2 < blockheight;y2++)
2043                 lineused[besty+y2] = bestx + blockwidth;
2044         // return success
2045         return true;
2046 }
2047
2048 static void Mod_Q1BSP_LoadFaces(lump_t *l)
2049 {
2050         dface_t *in;
2051         msurface_t *surface;
2052         int i, j, count, surfacenum, planenum, smax, tmax, ssize, tsize, firstedge, numedges, totalverts, totaltris, lightmapnumber;
2053         float texmins[2], texmaxs[2], val, lightmaptexcoordscale;
2054 #define LIGHTMAPSIZE 256
2055         rtexture_t *lightmaptexture, *deluxemaptexture;
2056         int lightmap_lineused[LIGHTMAPSIZE];
2057
2058         in = (dface_t *)(mod_base + l->fileofs);
2059         if (l->filelen % sizeof(*in))
2060                 Host_Error("Mod_Q1BSP_LoadFaces: funny lump size in %s",loadmodel->name);
2061         count = l->filelen / sizeof(*in);
2062         loadmodel->data_surfaces = (msurface_t *)Mem_Alloc(loadmodel->mempool, count*sizeof(msurface_t));
2063         loadmodel->data_surfaces_lightmapinfo = (msurface_lightmapinfo_t *)Mem_Alloc(loadmodel->mempool, count*sizeof(msurface_lightmapinfo_t));
2064
2065         loadmodel->num_surfaces = count;
2066
2067         totalverts = 0;
2068         totaltris = 0;
2069         for (surfacenum = 0, in = (dface_t *)(mod_base + l->fileofs);surfacenum < count;surfacenum++, in++)
2070         {
2071                 numedges = LittleShort(in->numedges);
2072                 totalverts += numedges;
2073                 totaltris += numedges - 2;
2074         }
2075
2076         Mod_AllocSurfMesh(loadmodel->mempool, totalverts, totaltris, true, false, false);
2077
2078         lightmaptexture = NULL;
2079         deluxemaptexture = r_texture_blanknormalmap;
2080         lightmapnumber = 1;
2081         lightmaptexcoordscale = 1.0f / (float)LIGHTMAPSIZE;
2082
2083         totalverts = 0;
2084         totaltris = 0;
2085         for (surfacenum = 0, in = (dface_t *)(mod_base + l->fileofs), surface = loadmodel->data_surfaces;surfacenum < count;surfacenum++, in++, surface++)
2086         {
2087                 surface->lightmapinfo = loadmodel->data_surfaces_lightmapinfo + surfacenum;
2088
2089                 // FIXME: validate edges, texinfo, etc?
2090                 firstedge = LittleLong(in->firstedge);
2091                 numedges = LittleShort(in->numedges);
2092                 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)
2093                         Host_Error("Mod_Q1BSP_LoadFaces: invalid edge range (firstedge %i, numedges %i, model edges %i)", firstedge, numedges, loadmodel->brushq1.numsurfedges);
2094                 i = LittleShort(in->texinfo);
2095                 if ((unsigned int) i >= (unsigned int) loadmodel->brushq1.numtexinfo)
2096                         Host_Error("Mod_Q1BSP_LoadFaces: invalid texinfo index %i(model has %i texinfos)", i, loadmodel->brushq1.numtexinfo);
2097                 surface->lightmapinfo->texinfo = loadmodel->brushq1.texinfo + i;
2098                 surface->texture = surface->lightmapinfo->texinfo->texture;
2099
2100                 planenum = LittleShort(in->planenum);
2101                 if ((unsigned int) planenum >= (unsigned int) loadmodel->brush.num_planes)
2102                         Host_Error("Mod_Q1BSP_LoadFaces: invalid plane index %i (model has %i planes)", planenum, loadmodel->brush.num_planes);
2103
2104                 //surface->flags = surface->texture->flags;
2105                 //if (LittleShort(in->side))
2106                 //      surface->flags |= SURF_PLANEBACK;
2107                 //surface->plane = loadmodel->brush.data_planes + planenum;
2108
2109                 surface->num_firstvertex = totalverts;
2110                 surface->num_vertices = numedges;
2111                 surface->num_firsttriangle = totaltris;
2112                 surface->num_triangles = numedges - 2;
2113                 totalverts += numedges;
2114                 totaltris += numedges - 2;
2115
2116                 // convert edges back to a normal polygon
2117                 for (i = 0;i < surface->num_vertices;i++)
2118                 {
2119                         int lindex = loadmodel->brushq1.surfedges[firstedge + i];
2120                         float s, t;
2121                         if (lindex > 0)
2122                                 VectorCopy(loadmodel->brushq1.vertexes[loadmodel->brushq1.edges[lindex].v[0]].position, (loadmodel->surfmesh.data_vertex3f + 3 * surface->num_firstvertex) + i * 3);
2123                         else
2124                                 VectorCopy(loadmodel->brushq1.vertexes[loadmodel->brushq1.edges[-lindex].v[1]].position, (loadmodel->surfmesh.data_vertex3f + 3 * surface->num_firstvertex) + i * 3);
2125                         s = DotProduct(((loadmodel->surfmesh.data_vertex3f + 3 * surface->num_firstvertex) + i * 3), surface->lightmapinfo->texinfo->vecs[0]) + surface->lightmapinfo->texinfo->vecs[0][3];
2126                         t = DotProduct(((loadmodel->surfmesh.data_vertex3f + 3 * surface->num_firstvertex) + i * 3), surface->lightmapinfo->texinfo->vecs[1]) + surface->lightmapinfo->texinfo->vecs[1][3];
2127                         (loadmodel->surfmesh.data_texcoordtexture2f + 2 * surface->num_firstvertex)[i * 2 + 0] = s / surface->texture->width;
2128                         (loadmodel->surfmesh.data_texcoordtexture2f + 2 * surface->num_firstvertex)[i * 2 + 1] = t / surface->texture->height;
2129                         (loadmodel->surfmesh.data_texcoordlightmap2f + 2 * surface->num_firstvertex)[i * 2 + 0] = 0;
2130                         (loadmodel->surfmesh.data_texcoordlightmap2f + 2 * surface->num_firstvertex)[i * 2 + 1] = 0;
2131                         (loadmodel->surfmesh.data_lightmapoffsets + surface->num_firstvertex)[i] = 0;
2132                 }
2133
2134                 for (i = 0;i < surface->num_triangles;i++)
2135                 {
2136                         (loadmodel->surfmesh.data_element3i + 3 * surface->num_firsttriangle)[i * 3 + 0] = 0 + surface->num_firstvertex;
2137                         (loadmodel->surfmesh.data_element3i + 3 * surface->num_firsttriangle)[i * 3 + 1] = i + 1 + surface->num_firstvertex;
2138                         (loadmodel->surfmesh.data_element3i + 3 * surface->num_firsttriangle)[i * 3 + 2] = i + 2 + surface->num_firstvertex;
2139                 }
2140
2141                 // compile additional data about the surface geometry
2142                 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);
2143                 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);
2144                 BoxFromPoints(surface->mins, surface->maxs, surface->num_vertices, (loadmodel->surfmesh.data_vertex3f + 3 * surface->num_firstvertex));
2145
2146                 // generate surface extents information
2147                 texmins[0] = texmaxs[0] = DotProduct((loadmodel->surfmesh.data_vertex3f + 3 * surface->num_firstvertex), surface->lightmapinfo->texinfo->vecs[0]) + surface->lightmapinfo->texinfo->vecs[0][3];
2148                 texmins[1] = texmaxs[1] = DotProduct((loadmodel->surfmesh.data_vertex3f + 3 * surface->num_firstvertex), surface->lightmapinfo->texinfo->vecs[1]) + surface->lightmapinfo->texinfo->vecs[1][3];
2149                 for (i = 1;i < surface->num_vertices;i++)
2150                 {
2151                         for (j = 0;j < 2;j++)
2152                         {
2153                                 val = DotProduct((loadmodel->surfmesh.data_vertex3f + 3 * surface->num_firstvertex) + i * 3, surface->lightmapinfo->texinfo->vecs[j]) + surface->lightmapinfo->texinfo->vecs[j][3];
2154                                 texmins[j] = min(texmins[j], val);
2155                                 texmaxs[j] = max(texmaxs[j], val);
2156                         }
2157                 }
2158                 for (i = 0;i < 2;i++)
2159                 {
2160                         surface->lightmapinfo->texturemins[i] = (int) floor(texmins[i] / 16.0) * 16;
2161                         surface->lightmapinfo->extents[i] = (int) ceil(texmaxs[i] / 16.0) * 16 - surface->lightmapinfo->texturemins[i];
2162                 }
2163
2164                 smax = surface->lightmapinfo->extents[0] >> 4;
2165                 tmax = surface->lightmapinfo->extents[1] >> 4;
2166                 ssize = (surface->lightmapinfo->extents[0] >> 4) + 1;
2167                 tsize = (surface->lightmapinfo->extents[1] >> 4) + 1;
2168
2169                 // lighting info
2170                 for (i = 0;i < MAXLIGHTMAPS;i++)
2171                         surface->lightmapinfo->styles[i] = in->styles[i];
2172                 surface->lightmaptexture = NULL;
2173                 surface->deluxemaptexture = r_texture_blanknormalmap;
2174                 i = LittleLong(in->lightofs);
2175                 if (i == -1)
2176                 {
2177                         surface->lightmapinfo->samples = NULL;
2178                         // give non-lightmapped water a 1x white lightmap
2179                         if ((surface->texture->basematerialflags & MATERIALFLAG_WATER) && (surface->lightmapinfo->texinfo->flags & TEX_SPECIAL) && ssize <= 256 && tsize <= 256)
2180                         {
2181                                 surface->lightmapinfo->samples = (unsigned char *)Mem_Alloc(loadmodel->mempool, ssize * tsize * 3);
2182                                 surface->lightmapinfo->styles[0] = 0;
2183                                 memset(surface->lightmapinfo->samples, 128, ssize * tsize * 3);
2184                         }
2185                 }
2186                 else if (loadmodel->brush.ishlbsp) // LordHavoc: HalfLife map (bsp version 30)
2187                         surface->lightmapinfo->samples = loadmodel->brushq1.lightdata + i;
2188                 else // LordHavoc: white lighting (bsp version 29)
2189                 {
2190                         surface->lightmapinfo->samples = loadmodel->brushq1.lightdata + (i * 3);
2191                         if (loadmodel->brushq1.nmaplightdata)
2192                                 surface->lightmapinfo->nmapsamples = loadmodel->brushq1.nmaplightdata + (i * 3);
2193                 }
2194
2195                 // check if we should apply a lightmap to this
2196                 if (!(surface->lightmapinfo->texinfo->flags & TEX_SPECIAL) || surface->lightmapinfo->samples)
2197                 {
2198                         int i, iu, iv, lightmapx, lightmapy;
2199                         float u, v, ubase, vbase, uscale, vscale;
2200
2201                         if (ssize > 256 || tsize > 256)
2202                                 Host_Error("Bad surface extents");
2203                         // force lightmap upload on first time seeing the surface
2204                         surface->cached_dlight = true;
2205                         // stainmap for permanent marks on walls
2206                         surface->lightmapinfo->stainsamples = (unsigned char *)Mem_Alloc(loadmodel->mempool, ssize * tsize * 3);
2207                         // clear to white
2208                         memset(surface->lightmapinfo->stainsamples, 255, ssize * tsize * 3);
2209
2210                         // find a place for this lightmap
2211                         if (!lightmaptexture || !Mod_Q1BSP_AllocLightmapBlock(lightmap_lineused, LIGHTMAPSIZE, LIGHTMAPSIZE, ssize, tsize, &lightmapx, &lightmapy))
2212                         {
2213                                 // could not find room, make a new lightmap
2214                                 lightmaptexture = R_LoadTexture2D(loadmodel->texturepool, va("lightmap%i", lightmapnumber), LIGHTMAPSIZE, LIGHTMAPSIZE, NULL, loadmodel->brushq1.lightmaprgba ? TEXTYPE_RGBA : TEXTYPE_RGB, TEXF_FORCELINEAR | TEXF_PRECACHE, NULL);
2215                                 if (loadmodel->brushq1.nmaplightdata)
2216                                         deluxemaptexture = R_LoadTexture2D(loadmodel->texturepool, va("deluxemap%i", lightmapnumber), LIGHTMAPSIZE, LIGHTMAPSIZE, NULL, loadmodel->brushq1.lightmaprgba ? TEXTYPE_RGBA : TEXTYPE_RGB, TEXF_FORCELINEAR | TEXF_PRECACHE, NULL);
2217                                 lightmapnumber++;
2218                                 memset(lightmap_lineused, 0, sizeof(lightmap_lineused));
2219                                 Mod_Q1BSP_AllocLightmapBlock(lightmap_lineused, LIGHTMAPSIZE, LIGHTMAPSIZE, ssize, tsize, &lightmapx, &lightmapy);
2220                         }
2221
2222                         surface->lightmaptexture = lightmaptexture;
2223                         surface->deluxemaptexture = deluxemaptexture;
2224                         surface->lightmapinfo->lightmaporigin[0] = lightmapx;
2225                         surface->lightmapinfo->lightmaporigin[1] = lightmapy;
2226
2227                         ubase = lightmapx * lightmaptexcoordscale;
2228                         vbase = lightmapy * lightmaptexcoordscale;
2229                         uscale = lightmaptexcoordscale;
2230                         vscale = lightmaptexcoordscale;
2231
2232                         for (i = 0;i < surface->num_vertices;i++)
2233                         {
2234                                 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);
2235                                 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);
2236                                 (loadmodel->surfmesh.data_texcoordlightmap2f + 2 * surface->num_firstvertex)[i * 2 + 0] = u * uscale + ubase;
2237                                 (loadmodel->surfmesh.data_texcoordlightmap2f + 2 * surface->num_firstvertex)[i * 2 + 1] = v * vscale + vbase;
2238                                 // LordHavoc: calc lightmap data offset for vertex lighting to use
2239                                 iu = (int) u;
2240                                 iv = (int) v;
2241                                 (loadmodel->surfmesh.data_lightmapoffsets + surface->num_firstvertex)[i] = (bound(0, iv, tmax) * ssize + bound(0, iu, smax)) * 3;
2242                         }
2243                 }
2244         }
2245 }
2246
2247 static void Mod_Q1BSP_LoadNodes_RecursiveSetParent(mnode_t *node, mnode_t *parent)
2248 {
2249         //if (node->parent)
2250         //      Host_Error("Mod_Q1BSP_LoadNodes_RecursiveSetParent: runaway recursion");
2251         node->parent = parent;
2252         if (node->plane)
2253         {
2254                 Mod_Q1BSP_LoadNodes_RecursiveSetParent(node->children[0], node);
2255                 Mod_Q1BSP_LoadNodes_RecursiveSetParent(node->children[1], node);
2256         }
2257 }
2258
2259 static void Mod_Q1BSP_LoadNodes(lump_t *l)
2260 {
2261         int                     i, j, count, p;
2262         dnode_t         *in;
2263         mnode_t         *out;
2264
2265         in = (dnode_t *)(mod_base + l->fileofs);
2266         if (l->filelen % sizeof(*in))
2267                 Host_Error("Mod_Q1BSP_LoadNodes: funny lump size in %s",loadmodel->name);
2268         count = l->filelen / sizeof(*in);
2269         out = (mnode_t *)Mem_Alloc(loadmodel->mempool, count*sizeof(*out));
2270
2271         loadmodel->brush.data_nodes = out;
2272         loadmodel->brush.num_nodes = count;
2273
2274         for ( i=0 ; i<count ; i++, in++, out++)
2275         {
2276                 for (j=0 ; j<3 ; j++)
2277                 {
2278                         out->mins[j] = LittleShort(in->mins[j]);
2279                         out->maxs[j] = LittleShort(in->maxs[j]);
2280                 }
2281
2282                 p = LittleLong(in->planenum);
2283                 out->plane = loadmodel->brush.data_planes + p;
2284
2285                 out->firstsurface = LittleShort(in->firstface);
2286                 out->numsurfaces = LittleShort(in->numfaces);
2287
2288                 for (j=0 ; j<2 ; j++)
2289                 {
2290                         p = LittleShort(in->children[j]);
2291                         if (p >= 0)
2292                                 out->children[j] = loadmodel->brush.data_nodes + p;
2293                         else
2294                                 out->children[j] = (mnode_t *)(loadmodel->brush.data_leafs + (-1 - p));
2295                 }
2296         }
2297
2298         Mod_Q1BSP_LoadNodes_RecursiveSetParent(loadmodel->brush.data_nodes, NULL);      // sets nodes and leafs
2299 }
2300
2301 static void Mod_Q1BSP_LoadLeafs(lump_t *l)
2302 {
2303         dleaf_t *in;
2304         mleaf_t *out;
2305         int i, j, count, p;
2306
2307         in = (dleaf_t *)(mod_base + l->fileofs);
2308         if (l->filelen % sizeof(*in))
2309                 Host_Error("Mod_Q1BSP_LoadLeafs: funny lump size in %s",loadmodel->name);
2310         count = l->filelen / sizeof(*in);
2311         out = (mleaf_t *)Mem_Alloc(loadmodel->mempool, count*sizeof(*out));
2312
2313         loadmodel->brush.data_leafs = out;
2314         loadmodel->brush.num_leafs = count;
2315         // get visleafs from the submodel data
2316         loadmodel->brush.num_pvsclusters = loadmodel->brushq1.submodels[0].visleafs;
2317         loadmodel->brush.num_pvsclusterbytes = (loadmodel->brush.num_pvsclusters+7)>>3;
2318         loadmodel->brush.data_pvsclusters = (unsigned char *)Mem_Alloc(loadmodel->mempool, loadmodel->brush.num_pvsclusters * loadmodel->brush.num_pvsclusterbytes);
2319         memset(loadmodel->brush.data_pvsclusters, 0xFF, loadmodel->brush.num_pvsclusters * loadmodel->brush.num_pvsclusterbytes);
2320
2321         for ( i=0 ; i<count ; i++, in++, out++)
2322         {
2323                 for (j=0 ; j<3 ; j++)
2324                 {
2325                         out->mins[j] = LittleShort(in->mins[j]);
2326                         out->maxs[j] = LittleShort(in->maxs[j]);
2327                 }
2328
2329                 // FIXME: this function could really benefit from some error checking
2330
2331                 out->contents = LittleLong(in->contents);
2332
2333                 out->firstleafsurface = loadmodel->brush.data_leafsurfaces + LittleShort(in->firstmarksurface);
2334                 out->numleafsurfaces = LittleShort(in->nummarksurfaces);
2335                 if (out->firstleafsurface < 0 || LittleShort(in->firstmarksurface) + out->numleafsurfaces > loadmodel->brush.num_leafsurfaces)
2336                 {
2337                         Con_Printf("Mod_Q1BSP_LoadLeafs: invalid leafsurface range %i:%i outside range %i:%i\n", out->firstleafsurface, out->firstleafsurface + out->numleafsurfaces, 0, loadmodel->brush.num_leafsurfaces);
2338                         out->firstleafsurface = NULL;
2339                         out->numleafsurfaces = 0;
2340                 }
2341
2342                 out->clusterindex = i - 1;
2343                 if (out->clusterindex >= loadmodel->brush.num_pvsclusters)
2344                         out->clusterindex = -1;
2345
2346                 p = LittleLong(in->visofs);
2347                 // ignore visofs errors on leaf 0 (solid)
2348                 if (p >= 0 && out->clusterindex >= 0)
2349                 {
2350                         if (p >= loadmodel->brushq1.num_compressedpvs)
2351                                 Con_Print("Mod_Q1BSP_LoadLeafs: invalid visofs\n");
2352                         else
2353                                 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);
2354                 }
2355
2356                 for (j = 0;j < 4;j++)
2357                         out->ambient_sound_level[j] = in->ambient_level[j];
2358
2359                 // FIXME: Insert caustics here
2360         }
2361 }
2362
2363 static void Mod_Q1BSP_LoadClipnodes(lump_t *l, hullinfo_t *hullinfo)
2364 {
2365         dclipnode_t *in, *out;
2366         int                     i, count;
2367         hull_t          *hull;
2368
2369         in = (dclipnode_t *)(mod_base + l->fileofs);
2370         if (l->filelen % sizeof(*in))
2371                 Host_Error("Mod_Q1BSP_LoadClipnodes: funny lump size in %s",loadmodel->name);
2372         count = l->filelen / sizeof(*in);
2373         out = (dclipnode_t *)Mem_Alloc(loadmodel->mempool, count*sizeof(*out));
2374
2375         loadmodel->brushq1.clipnodes = out;
2376         loadmodel->brushq1.numclipnodes = count;
2377
2378         for (i = 1; i < hullinfo->numhulls; i++)
2379         {
2380                 hull = &loadmodel->brushq1.hulls[i];
2381                 hull->clipnodes = out;
2382                 hull->firstclipnode = 0;
2383                 hull->lastclipnode = count-1;
2384                 hull->planes = loadmodel->brush.data_planes;
2385                 hull->clip_mins[0] = hullinfo->hullsizes[i][0][0];
2386                 hull->clip_mins[1] = hullinfo->hullsizes[i][0][1];
2387                 hull->clip_mins[2] = hullinfo->hullsizes[i][0][2];
2388                 hull->clip_maxs[0] = hullinfo->hullsizes[i][1][0];
2389                 hull->clip_maxs[1] = hullinfo->hullsizes[i][1][1];
2390                 hull->clip_maxs[2] = hullinfo->hullsizes[i][1][2];
2391                 VectorSubtract(hull->clip_maxs, hull->clip_mins, hull->clip_size);
2392         }
2393
2394         for (i=0 ; i<count ; i++, out++, in++)
2395         {
2396                 out->planenum = LittleLong(in->planenum);
2397                 out->children[0] = LittleShort(in->children[0]);
2398                 out->children[1] = LittleShort(in->children[1]);
2399                 if (out->planenum < 0 || out->planenum >= loadmodel->brush.num_planes)
2400                         Host_Error("Corrupt clipping hull(out of range planenum)");
2401                 if (out->children[0] >= count || out->children[1] >= count)
2402                         Host_Error("Corrupt clipping hull(out of range child)");
2403         }
2404 }
2405
2406 //Duplicate the drawing hull structure as a clipping hull
2407 static void Mod_Q1BSP_MakeHull0(void)
2408 {
2409         mnode_t         *in;
2410         dclipnode_t *out;
2411         int                     i;
2412         hull_t          *hull;
2413
2414         hull = &loadmodel->brushq1.hulls[0];
2415
2416         in = loadmodel->brush.data_nodes;
2417         out = (dclipnode_t *)Mem_Alloc(loadmodel->mempool, loadmodel->brush.num_nodes * sizeof(dclipnode_t));
2418
2419         hull->clipnodes = out;
2420         hull->firstclipnode = 0;
2421         hull->lastclipnode = loadmodel->brush.num_nodes - 1;
2422         hull->planes = loadmodel->brush.data_planes;
2423
2424         for (i = 0;i < loadmodel->brush.num_nodes;i++, out++, in++)
2425         {
2426                 out->planenum = in->plane - loadmodel->brush.data_planes;
2427                 out->children[0] = in->children[0]->plane ? in->children[0] - loadmodel->brush.data_nodes : ((mleaf_t *)in->children[0])->contents;
2428                 out->children[1] = in->children[1]->plane ? in->children[1] - loadmodel->brush.data_nodes : ((mleaf_t *)in->children[1])->contents;
2429         }
2430 }
2431
2432 static void Mod_Q1BSP_LoadLeaffaces(lump_t *l)
2433 {
2434         int i, j;
2435         short *in;
2436
2437         in = (short *)(mod_base + l->fileofs);
2438         if (l->filelen % sizeof(*in))
2439                 Host_Error("Mod_Q1BSP_LoadLeaffaces: funny lump size in %s",loadmodel->name);
2440         loadmodel->brush.num_leafsurfaces = l->filelen / sizeof(*in);
2441         loadmodel->brush.data_leafsurfaces = (int *)Mem_Alloc(loadmodel->mempool, loadmodel->brush.num_leafsurfaces * sizeof(int));
2442
2443         for (i = 0;i < loadmodel->brush.num_leafsurfaces;i++)
2444         {
2445                 j = (unsigned) LittleShort(in[i]);
2446                 if (j >= loadmodel->num_surfaces)
2447                         Host_Error("Mod_Q1BSP_LoadLeaffaces: bad surface number");
2448                 loadmodel->brush.data_leafsurfaces[i] = j;
2449         }
2450 }
2451
2452 static void Mod_Q1BSP_LoadSurfedges(lump_t *l)
2453 {
2454         int             i;
2455         int             *in;
2456
2457         in = (int *)(mod_base + l->fileofs);
2458         if (l->filelen % sizeof(*in))
2459                 Host_Error("Mod_Q1BSP_LoadSurfedges: funny lump size in %s",loadmodel->name);
2460         loadmodel->brushq1.numsurfedges = l->filelen / sizeof(*in);
2461         loadmodel->brushq1.surfedges = (int *)Mem_Alloc(loadmodel->mempool, loadmodel->brushq1.numsurfedges * sizeof(int));
2462
2463         for (i = 0;i < loadmodel->brushq1.numsurfedges;i++)
2464                 loadmodel->brushq1.surfedges[i] = LittleLong(in[i]);
2465 }
2466
2467
2468 static void Mod_Q1BSP_LoadPlanes(lump_t *l)
2469 {
2470         int                     i;
2471         mplane_t        *out;
2472         dplane_t        *in;
2473
2474         in = (dplane_t *)(mod_base + l->fileofs);
2475         if (l->filelen % sizeof(*in))
2476                 Host_Error("Mod_Q1BSP_LoadPlanes: funny lump size in %s", loadmodel->name);
2477
2478         loadmodel->brush.num_planes = l->filelen / sizeof(*in);
2479         loadmodel->brush.data_planes = out = (mplane_t *)Mem_Alloc(loadmodel->mempool, loadmodel->brush.num_planes * sizeof(*out));
2480
2481         for (i = 0;i < loadmodel->brush.num_planes;i++, in++, out++)
2482         {
2483                 out->normal[0] = LittleFloat(in->normal[0]);
2484                 out->normal[1] = LittleFloat(in->normal[1]);
2485                 out->normal[2] = LittleFloat(in->normal[2]);
2486                 out->dist = LittleFloat(in->dist);
2487
2488                 PlaneClassify(out);
2489         }
2490 }
2491
2492 static void Mod_Q1BSP_LoadMapBrushes(void)
2493 {
2494 #if 0
2495 // unfinished
2496         int submodel, numbrushes;
2497         qboolean firstbrush;
2498         char *text, *maptext;
2499         char mapfilename[MAX_QPATH];
2500         FS_StripExtension (loadmodel->name, mapfilename, sizeof (mapfilename));
2501         strlcat (mapfilename, ".map", sizeof (mapfilename));
2502         maptext = (unsigned char*) FS_LoadFile(mapfilename, tempmempool, false, NULL);
2503         if (!maptext)
2504                 return;
2505         text = maptext;
2506         if (!COM_ParseTokenConsole(&data))
2507                 return; // error
2508         submodel = 0;
2509         for (;;)
2510         {
2511                 if (!COM_ParseTokenConsole(&data))
2512                         break;
2513                 if (com_token[0] != '{')
2514                         return; // error
2515                 // entity
2516                 firstbrush = true;
2517                 numbrushes = 0;
2518                 maxbrushes = 256;
2519                 brushes = Mem_Alloc(loadmodel->mempool, maxbrushes * sizeof(mbrush_t));
2520                 for (;;)
2521                 {
2522                         if (!COM_ParseTokenConsole(&data))
2523                                 return; // error
2524                         if (com_token[0] == '}')
2525                                 break; // end of entity
2526                         if (com_token[0] == '{')
2527                         {
2528                                 // brush
2529                                 if (firstbrush)
2530                                 {
2531                                         if (submodel)
2532                                         {
2533                                                 if (submodel > loadmodel->brush.numsubmodels)
2534                                                 {
2535                                                         Con_Printf("Mod_Q1BSP_LoadMapBrushes: .map has more submodels than .bsp!\n");
2536                                                         model = NULL;
2537                                                 }
2538                                                 else
2539                                                         model = loadmodel->brush.submodels[submodel];
2540                                         }
2541                                         else
2542                                                 model = loadmodel;
2543                                 }
2544                                 for (;;)
2545                                 {
2546                                         if (!COM_ParseTokenConsole(&data))
2547                                                 return; // error
2548                                         if (com_token[0] == '}')
2549                                                 break; // end of brush
2550                                         // each brush face should be this format:
2551                                         // ( x y z ) ( x y z ) ( x y z ) texture scroll_s scroll_t rotateangle scale_s scale_t
2552                                         // FIXME: support hl .map format
2553                                         for (pointnum = 0;pointnum < 3;pointnum++)
2554                                         {
2555                                                 COM_ParseTokenConsole(&data);
2556                                                 for (componentnum = 0;componentnum < 3;componentnum++)
2557                                                 {
2558                                                         COM_ParseTokenConsole(&data);
2559                                                         point[pointnum][componentnum] = atof(com_token);
2560                                                 }
2561                                                 COM_ParseTokenConsole(&data);
2562                                         }
2563                                         COM_ParseTokenConsole(&data);
2564                                         strlcpy(facetexture, com_token, sizeof(facetexture));
2565                                         COM_ParseTokenConsole(&data);
2566                                         //scroll_s = atof(com_token);
2567                                         COM_ParseTokenConsole(&data);
2568                                         //scroll_t = atof(com_token);
2569                                         COM_ParseTokenConsole(&data);
2570                                         //rotate = atof(com_token);
2571                                         COM_ParseTokenConsole(&data);
2572                                         //scale_s = atof(com_token);
2573                                         COM_ParseTokenConsole(&data);
2574                                         //scale_t = atof(com_token);
2575                                         TriangleNormal(point[0], point[1], point[2], planenormal);
2576                                         VectorNormalizeDouble(planenormal);
2577                                         planedist = DotProduct(point[0], planenormal);
2578                                         //ChooseTexturePlane(planenormal, texturevector[0], texturevector[1]);
2579                                 }
2580                                 continue;
2581                         }
2582                 }
2583         }
2584 #endif
2585 }
2586
2587
2588 #define MAX_PORTALPOINTS 64
2589
2590 typedef struct portal_s
2591 {
2592         mplane_t plane;
2593         mnode_t *nodes[2];              // [0] = front side of plane
2594         struct portal_s *next[2];
2595         int numpoints;
2596         double points[3*MAX_PORTALPOINTS];
2597         struct portal_s *chain; // all portals are linked into a list
2598 }
2599 portal_t;
2600
2601 static portal_t *portalchain;
2602
2603 /*
2604 ===========
2605 AllocPortal
2606 ===========
2607 */
2608 static portal_t *AllocPortal(void)
2609 {
2610         portal_t *p;
2611         p = (portal_t *)Mem_Alloc(loadmodel->mempool, sizeof(portal_t));
2612         p->chain = portalchain;
2613         portalchain = p;
2614         return p;
2615 }
2616
2617 static void FreePortal(portal_t *p)
2618 {
2619         Mem_Free(p);
2620 }
2621
2622 static void Mod_Q1BSP_RecursiveRecalcNodeBBox(mnode_t *node)
2623 {
2624         // process only nodes (leafs already had their box calculated)
2625         if (!node->plane)
2626                 return;
2627
2628         // calculate children first
2629         Mod_Q1BSP_RecursiveRecalcNodeBBox(node->children[0]);
2630         Mod_Q1BSP_RecursiveRecalcNodeBBox(node->children[1]);
2631
2632         // make combined bounding box from children
2633         node->mins[0] = min(node->children[0]->mins[0], node->children[1]->mins[0]);
2634         node->mins[1] = min(node->children[0]->mins[1], node->children[1]->mins[1]);
2635         node->mins[2] = min(node->children[0]->mins[2], node->children[1]->mins[2]);
2636         node->maxs[0] = max(node->children[0]->maxs[0], node->children[1]->maxs[0]);
2637         node->maxs[1] = max(node->children[0]->maxs[1], node->children[1]->maxs[1]);
2638         node->maxs[2] = max(node->children[0]->maxs[2], node->children[1]->maxs[2]);
2639 }
2640
2641 static void Mod_Q1BSP_FinalizePortals(void)
2642 {
2643         int i, j, numportals, numpoints;
2644         portal_t *p, *pnext;
2645         mportal_t *portal;
2646         mvertex_t *point;
2647         mleaf_t *leaf, *endleaf;
2648
2649         // tally up portal and point counts and recalculate bounding boxes for all
2650         // leafs (because qbsp is very sloppy)
2651         leaf = loadmodel->brush.data_leafs;
2652         endleaf = leaf + loadmodel->brush.num_leafs;
2653         for (;leaf < endleaf;leaf++)
2654         {
2655                 VectorSet(leaf->mins,  2000000000,  2000000000,  2000000000);
2656                 VectorSet(leaf->maxs, -2000000000, -2000000000, -2000000000);
2657         }
2658         p = portalchain;
2659         numportals = 0;
2660         numpoints = 0;
2661         while (p)
2662         {
2663                 // note: this check must match the one below or it will usually corrupt memory
2664                 // 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
2665                 if (p->numpoints >= 3 && p->nodes[0] != p->nodes[1] && ((mleaf_t *)p->nodes[0])->clusterindex >= 0 && ((mleaf_t *)p->nodes[1])->clusterindex >= 0)
2666                 {
2667                         numportals += 2;
2668                         numpoints += p->numpoints * 2;
2669                 }
2670                 p = p->chain;
2671         }
2672         loadmodel->brush.data_portals = (mportal_t *)Mem_Alloc(loadmodel->mempool, numportals * sizeof(mportal_t) + numpoints * sizeof(mvertex_t));
2673         loadmodel->brush.num_portals = numportals;
2674         loadmodel->brush.data_portalpoints = (mvertex_t *)((unsigned char *) loadmodel->brush.data_portals + numportals * sizeof(mportal_t));
2675         loadmodel->brush.num_portalpoints = numpoints;
2676         // clear all leaf portal chains
2677         for (i = 0;i < loadmodel->brush.num_leafs;i++)
2678                 loadmodel->brush.data_leafs[i].portals = NULL;
2679         // process all portals in the global portal chain, while freeing them
2680         portal = loadmodel->brush.data_portals;
2681         point = loadmodel->brush.data_portalpoints;
2682         p = portalchain;
2683         portalchain = NULL;
2684         while (p)
2685         {
2686                 pnext = p->chain;
2687
2688                 if (p->numpoints >= 3 && p->nodes[0] != p->nodes[1])
2689                 {
2690                         // note: this check must match the one above or it will usually corrupt memory
2691                         // 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
2692                         if (((mleaf_t *)p->nodes[0])->clusterindex >= 0 && ((mleaf_t *)p->nodes[1])->clusterindex >= 0)
2693                         {
2694                                 // first make the back to front portal(forward portal)
2695                                 portal->points = point;
2696                                 portal->numpoints = p->numpoints;
2697                                 portal->plane.dist = p->plane.dist;
2698                                 VectorCopy(p->plane.normal, portal->plane.normal);
2699                                 portal->here = (mleaf_t *)p->nodes[1];
2700                                 portal->past = (mleaf_t *)p->nodes[0];
2701                                 // copy points
2702                                 for (j = 0;j < portal->numpoints;j++)
2703                                 {
2704                                         VectorCopy(p->points + j*3, point->position);
2705                                         point++;
2706                                 }
2707                                 BoxFromPoints(portal->mins, portal->maxs, portal->numpoints, portal->points->position);
2708                                 PlaneClassify(&portal->plane);
2709
2710                                 // link into leaf's portal chain
2711                                 portal->next = portal->here->portals;
2712                                 portal->here->portals = portal;
2713
2714                                 // advance to next portal
2715                                 portal++;
2716
2717                                 // then make the front to back portal(backward portal)
2718                                 portal->points = point;
2719                                 portal->numpoints = p->numpoints;
2720                                 portal->plane.dist = -p->plane.dist;
2721                                 VectorNegate(p->plane.normal, portal->plane.normal);
2722                                 portal->here = (mleaf_t *)p->nodes[0];
2723                                 portal->past = (mleaf_t *)p->nodes[1];
2724                                 // copy points
2725                                 for (j = portal->numpoints - 1;j >= 0;j--)
2726                                 {
2727                                         VectorCopy(p->points + j*3, point->position);
2728                                         point++;
2729                                 }
2730                                 BoxFromPoints(portal->mins, portal->maxs, portal->numpoints, portal->points->position);
2731                                 PlaneClassify(&portal->plane);
2732
2733                                 // link into leaf's portal chain
2734                                 portal->next = portal->here->portals;
2735                                 portal->here->portals = portal;
2736
2737                                 // advance to next portal
2738                                 portal++;
2739                         }
2740                         // add the portal's polygon points to the leaf bounding boxes
2741                         for (i = 0;i < 2;i++)
2742                         {
2743                                 leaf = (mleaf_t *)p->nodes[i];
2744                                 for (j = 0;j < p->numpoints;j++)
2745                                 {
2746                                         if (leaf->mins[0] > p->points[j*3+0]) leaf->mins[0] = p->points[j*3+0];
2747                                         if (leaf->mins[1] > p->points[j*3+1]) leaf->mins[1] = p->points[j*3+1];
2748                                         if (leaf->mins[2] > p->points[j*3+2]) leaf->mins[2] = p->points[j*3+2];
2749                                         if (leaf->maxs[0] < p->points[j*3+0]) leaf->maxs[0] = p->points[j*3+0];
2750                                         if (leaf->maxs[1] < p->points[j*3+1]) leaf->maxs[1] = p->points[j*3+1];
2751                                         if (leaf->maxs[2] < p->points[j*3+2]) leaf->maxs[2] = p->points[j*3+2];
2752                                 }
2753                         }
2754                 }
2755                 FreePortal(p);
2756                 p = pnext;
2757         }
2758         // now recalculate the node bounding boxes from the leafs
2759         Mod_Q1BSP_RecursiveRecalcNodeBBox(loadmodel->brush.data_nodes);
2760 }
2761
2762 /*
2763 =============
2764 AddPortalToNodes
2765 =============
2766 */
2767 static void AddPortalToNodes(portal_t *p, mnode_t *front, mnode_t *back)
2768 {
2769         if (!front)
2770                 Host_Error("AddPortalToNodes: NULL front node");
2771         if (!back)
2772                 Host_Error("AddPortalToNodes: NULL back node");
2773         if (p->nodes[0] || p->nodes[1])
2774                 Host_Error("AddPortalToNodes: already included");
2775         // 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
2776
2777         p->nodes[0] = front;
2778         p->next[0] = (portal_t *)front->portals;
2779         front->portals = (mportal_t *)p;
2780
2781         p->nodes[1] = back;
2782         p->next[1] = (portal_t *)back->portals;
2783         back->portals = (mportal_t *)p;
2784 }
2785
2786 /*
2787 =============
2788 RemovePortalFromNode
2789 =============
2790 */
2791 static void RemovePortalFromNodes(portal_t *portal)
2792 {
2793         int i;
2794         mnode_t *node;
2795         void **portalpointer;
2796         portal_t *t;
2797         for (i = 0;i < 2;i++)
2798         {
2799                 node = portal->nodes[i];
2800
2801                 portalpointer = (void **) &node->portals;
2802                 while (1)
2803                 {
2804                         t = (portal_t *)*portalpointer;
2805                         if (!t)
2806                                 Host_Error("RemovePortalFromNodes: portal not in leaf");
2807
2808                         if (t == portal)
2809                         {
2810                                 if (portal->nodes[0] == node)
2811                                 {
2812                                         *portalpointer = portal->next[0];
2813                                         portal->nodes[0] = NULL;
2814                                 }
2815                                 else if (portal->nodes[1] == node)
2816                                 {
2817                                         *portalpointer = portal->next[1];
2818                                         portal->nodes[1] = NULL;
2819                                 }
2820                                 else
2821                                         Host_Error("RemovePortalFromNodes: portal not bounding leaf");
2822                                 break;
2823                         }
2824
2825                         if (t->nodes[0] == node)
2826                                 portalpointer = (void **) &t->next[0];
2827                         else if (t->nodes[1] == node)
2828                                 portalpointer = (void **) &t->next[1];
2829                         else
2830                                 Host_Error("RemovePortalFromNodes: portal not bounding leaf");
2831                 }
2832         }
2833 }
2834
2835 #define PORTAL_DIST_EPSILON (1.0 / 32.0)
2836 static void Mod_Q1BSP_RecursiveNodePortals(mnode_t *node)
2837 {
2838         int i, side;
2839         mnode_t *front, *back, *other_node;
2840         mplane_t clipplane, *plane;
2841         portal_t *portal, *nextportal, *nodeportal, *splitportal, *temp;
2842         int numfrontpoints, numbackpoints;
2843         double frontpoints[3*MAX_PORTALPOINTS], backpoints[3*MAX_PORTALPOINTS];
2844
2845         // if a leaf, we're done
2846         if (!node->plane)
2847                 return;
2848
2849         plane = node->plane;
2850
2851         front = node->children[0];
2852         back = node->children[1];
2853         if (front == back)
2854                 Host_Error("Mod_Q1BSP_RecursiveNodePortals: corrupt node hierarchy");
2855
2856         // create the new portal by generating a polygon for the node plane,
2857         // and clipping it by all of the other portals(which came from nodes above this one)
2858         nodeportal = AllocPortal();
2859         nodeportal->plane = *plane;
2860
2861         // 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)
2862         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);
2863         nodeportal->numpoints = 4;
2864         side = 0;       // shut up compiler warning
2865         for (portal = (portal_t *)node->portals;portal;portal = portal->next[side])
2866         {
2867                 clipplane = portal->plane;
2868                 if (portal->nodes[0] == portal->nodes[1])
2869                         Host_Error("Mod_Q1BSP_RecursiveNodePortals: portal has same node on both sides(1)");
2870                 if (portal->nodes[0] == node)
2871                         side = 0;
2872                 else if (portal->nodes[1] == node)
2873                 {
2874                         clipplane.dist = -clipplane.dist;
2875                         VectorNegate(clipplane.normal, clipplane.normal);
2876                         side = 1;
2877                 }
2878                 else
2879                         Host_Error("Mod_Q1BSP_RecursiveNodePortals: mislinked portal");
2880
2881                 for (i = 0;i < nodeportal->numpoints*3;i++)
2882                         frontpoints[i] = nodeportal->points[i];
2883                 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);
2884                 if (nodeportal->numpoints <= 0 || nodeportal->numpoints >= MAX_PORTALPOINTS)
2885                         break;
2886         }
2887
2888         if (nodeportal->numpoints < 3)
2889         {
2890                 Con_Print("Mod_Q1BSP_RecursiveNodePortals: WARNING: new portal was clipped away\n");
2891                 nodeportal->numpoints = 0;
2892         }
2893         else if (nodeportal->numpoints >= MAX_PORTALPOINTS)
2894         {
2895                 Con_Print("Mod_Q1BSP_RecursiveNodePortals: WARNING: new portal has too many points\n");
2896                 nodeportal->numpoints = 0;
2897         }
2898
2899         AddPortalToNodes(nodeportal, front, back);
2900
2901         // split the portals of this node along this node's plane and assign them to the children of this node
2902         // (migrating the portals downward through the tree)
2903         for (portal = (portal_t *)node->portals;portal;portal = nextportal)
2904         {
2905                 if (portal->nodes[0] == portal->nodes[1])
2906                         Host_Error("Mod_Q1BSP_RecursiveNodePortals: portal has same node on both sides(2)");
2907                 if (portal->nodes[0] == node)
2908                         side = 0;
2909                 else if (portal->nodes[1] == node)
2910                         side = 1;
2911                 else
2912                         Host_Error("Mod_Q1BSP_RecursiveNodePortals: mislinked portal");
2913                 nextportal = portal->next[side];
2914                 if (!portal->numpoints)
2915                         continue;
2916
2917                 other_node = portal->nodes[!side];
2918                 RemovePortalFromNodes(portal);
2919
2920                 // cut the portal into two portals, one on each side of the node plane
2921                 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);
2922
2923                 if (!numfrontpoints)
2924                 {
2925                         if (side == 0)
2926                                 AddPortalToNodes(portal, back, other_node);
2927                         else
2928                                 AddPortalToNodes(portal, other_node, back);
2929                         continue;
2930                 }
2931                 if (!numbackpoints)
2932                 {
2933                         if (side == 0)
2934                                 AddPortalToNodes(portal, front, other_node);
2935                         else
2936                                 AddPortalToNodes(portal, other_node, front);
2937                         continue;
2938                 }
2939
2940                 // the portal is split
2941                 splitportal = AllocPortal();
2942                 temp = splitportal->chain;
2943                 *splitportal = *portal;
2944                 splitportal->chain = temp;
2945                 for (i = 0;i < numbackpoints*3;i++)
2946                         splitportal->points[i] = backpoints[i];
2947                 splitportal->numpoints = numbackpoints;
2948                 for (i = 0;i < numfrontpoints*3;i++)
2949                         portal->points[i] = frontpoints[i];
2950                 portal->numpoints = numfrontpoints;
2951
2952                 if (side == 0)
2953                 {
2954                         AddPortalToNodes(portal, front, other_node);
2955                         AddPortalToNodes(splitportal, back, other_node);
2956                 }
2957                 else
2958                 {
2959                         AddPortalToNodes(portal, other_node, front);
2960                         AddPortalToNodes(splitportal, other_node, back);
2961                 }
2962         }
2963
2964         Mod_Q1BSP_RecursiveNodePortals(front);
2965         Mod_Q1BSP_RecursiveNodePortals(back);
2966 }
2967
2968 static void Mod_Q1BSP_MakePortals(void)
2969 {
2970         portalchain = NULL;
2971         Mod_Q1BSP_RecursiveNodePortals(loadmodel->brush.data_nodes);
2972         Mod_Q1BSP_FinalizePortals();
2973 }
2974
2975 static void Mod_Q1BSP_BuildLightmapUpdateChains(mempool_t *mempool, model_t *model)
2976 {
2977         int i, j, stylecounts[256], totalcount, remapstyles[256];
2978         msurface_t *surface;
2979         memset(stylecounts, 0, sizeof(stylecounts));
2980         for (i = 0;i < model->nummodelsurfaces;i++)
2981         {
2982                 surface = model->data_surfaces + model->firstmodelsurface + i;
2983                 for (j = 0;j < MAXLIGHTMAPS;j++)
2984                         stylecounts[surface->lightmapinfo->styles[j]]++;
2985         }
2986         totalcount = 0;
2987         model->brushq1.light_styles = 0;
2988         for (i = 0;i < 255;i++)
2989         {
2990                 if (stylecounts[i])
2991                 {
2992                         remapstyles[i] = model->brushq1.light_styles++;
2993                         totalcount += stylecounts[i] + 1;
2994                 }
2995         }
2996         if (!totalcount)
2997                 return;
2998         model->brushq1.light_style = (unsigned char *)Mem_Alloc(mempool, model->brushq1.light_styles * sizeof(unsigned char));
2999         model->brushq1.light_stylevalue = (int *)Mem_Alloc(mempool, model->brushq1.light_styles * sizeof(int));
3000         model->brushq1.light_styleupdatechains = (msurface_t ***)Mem_Alloc(mempool, model->brushq1.light_styles * sizeof(msurface_t **));
3001         model->brushq1.light_styleupdatechainsbuffer = (msurface_t **)Mem_Alloc(mempool, totalcount * sizeof(msurface_t *));
3002         model->brushq1.light_styles = 0;
3003         for (i = 0;i < 255;i++)
3004                 if (stylecounts[i])
3005                         model->brushq1.light_style[model->brushq1.light_styles++] = i;
3006         j = 0;
3007         for (i = 0;i < model->brushq1.light_styles;i++)
3008         {
3009                 model->brushq1.light_styleupdatechains[i] = model->brushq1.light_styleupdatechainsbuffer + j;
3010                 j += stylecounts[model->brushq1.light_style[i]] + 1;
3011         }
3012         for (i = 0;i < model->nummodelsurfaces;i++)
3013         {
3014                 surface = model->data_surfaces + model->firstmodelsurface + i;
3015                 for (j = 0;j < MAXLIGHTMAPS;j++)
3016                         if (surface->lightmapinfo->styles[j] != 255)
3017                                 *model->brushq1.light_styleupdatechains[remapstyles[surface->lightmapinfo->styles[j]]]++ = surface;
3018         }
3019         j = 0;
3020         for (i = 0;i < model->brushq1.light_styles;i++)
3021         {
3022                 *model->brushq1.light_styleupdatechains[i] = NULL;
3023                 model->brushq1.light_styleupdatechains[i] = model->brushq1.light_styleupdatechainsbuffer + j;
3024                 j += stylecounts[model->brushq1.light_style[i]] + 1;
3025         }
3026 }
3027
3028 //Returns PVS data for a given point
3029 //(note: can return NULL)
3030 static unsigned char *Mod_Q1BSP_GetPVS(model_t *model, const vec3_t p)
3031 {
3032         mnode_t *node;
3033         node = model->brush.data_nodes;
3034         while (node->plane)
3035                 node = node->children[(node->plane->type < 3 ? p[node->plane->type] : DotProduct(p,node->plane->normal)) < node->plane->dist];
3036         if (((mleaf_t *)node)->clusterindex >= 0)
3037                 return model->brush.data_pvsclusters + ((mleaf_t *)node)->clusterindex * model->brush.num_pvsclusterbytes;
3038         else
3039                 return NULL;
3040 }
3041
3042 static void Mod_Q1BSP_FatPVS_RecursiveBSPNode(model_t *model, const vec3_t org, vec_t radius, unsigned char *pvsbuffer, int pvsbytes, mnode_t *node)
3043 {
3044         while (node->plane)
3045         {
3046                 float d = PlaneDiff(org, node->plane);
3047                 if (d > radius)
3048                         node = node->children[0];
3049                 else if (d < -radius)
3050                         node = node->children[1];
3051                 else
3052                 {
3053                         // go down both sides
3054                         Mod_Q1BSP_FatPVS_RecursiveBSPNode(model, org, radius, pvsbuffer, pvsbytes, node->children[0]);
3055                         node = node->children[1];
3056                 }
3057         }
3058         // if this leaf is in a cluster, accumulate the pvs bits
3059         if (((mleaf_t *)node)->clusterindex >= 0)
3060         {
3061                 int i;
3062                 unsigned char *pvs = model->brush.data_pvsclusters + ((mleaf_t *)node)->clusterindex * model->brush.num_pvsclusterbytes;
3063                 for (i = 0;i < pvsbytes;i++)
3064                         pvsbuffer[i] |= pvs[i];
3065         }
3066 }
3067
3068 //Calculates a PVS that is the inclusive or of all leafs within radius pixels
3069 //of the given point.
3070 static int Mod_Q1BSP_FatPVS(model_t *model, const vec3_t org, vec_t radius, unsigned char *pvsbuffer, int pvsbufferlength)
3071 {
3072         int bytes = model->brush.num_pvsclusterbytes;
3073         bytes = min(bytes, pvsbufferlength);
3074         if (r_novis.integer || !model->brush.num_pvsclusters || !Mod_Q1BSP_GetPVS(model, org))
3075         {
3076                 memset(pvsbuffer, 0xFF, bytes);
3077                 return bytes;
3078         }
3079         memset(pvsbuffer, 0, bytes);
3080         Mod_Q1BSP_FatPVS_RecursiveBSPNode(model, org, radius, pvsbuffer, bytes, model->brush.data_nodes);
3081         return bytes;
3082 }
3083
3084 static void Mod_Q1BSP_RoundUpToHullSize(model_t *cmodel, const vec3_t inmins, const vec3_t inmaxs, vec3_t outmins, vec3_t outmaxs)
3085 {
3086         vec3_t size;
3087         const hull_t *hull;
3088
3089         VectorSubtract(inmaxs, inmins, size);
3090         if (cmodel->brush.ismcbsp)
3091         {
3092                 if (size[0] < 3)
3093                         hull = &cmodel->brushq1.hulls[0]; // 0x0x0
3094                 else if (size[2] < 48) // pick the nearest of 40 or 56
3095                         hull = &cmodel->brushq1.hulls[2]; // 16x16x40
3096                 else
3097                         hull = &cmodel->brushq1.hulls[1]; // 16x16x56
3098         }
3099         else if (cmodel->brush.ishlbsp)
3100         {
3101                 if (size[0] < 3)
3102                         hull = &cmodel->brushq1.hulls[0]; // 0x0x0
3103                 else if (size[0] <= 32)
3104                 {
3105                         if (size[2] < 54) // pick the nearest of 36 or 72
3106                                 hull = &cmodel->brushq1.hulls[3]; // 32x32x36
3107                         else
3108                                 hull = &cmodel->brushq1.hulls[1]; // 32x32x72
3109                 }
3110                 else
3111                         hull = &cmodel->brushq1.hulls[2]; // 64x64x64
3112         }
3113         else
3114         {
3115                 if (size[0] < 3)
3116                         hull = &cmodel->brushq1.hulls[0]; // 0x0x0
3117                 else if (size[0] <= 32)
3118                         hull = &cmodel->brushq1.hulls[1]; // 32x32x56
3119                 else
3120                         hull = &cmodel->brushq1.hulls[2]; // 64x64x88
3121         }
3122         VectorCopy(inmins, outmins);
3123         VectorAdd(inmins, hull->clip_size, outmaxs);
3124 }
3125
3126 void Mod_Q1BSP_Load(model_t *mod, void *buffer, void *bufferend)
3127 {
3128         int i, j, k;
3129         dheader_t *header;
3130         dmodel_t *bm;
3131         mempool_t *mainmempool;
3132         float dist, modelyawradius, modelradius, *vec;
3133         msurface_t *surface;
3134         int numshadowmeshtriangles;
3135         dheader_t _header;
3136         hullinfo_t hullinfo;
3137
3138         mod->type = mod_brushq1;
3139
3140         if (!memcmp (buffer, "MCBSPpad", 8))
3141         {
3142                 unsigned char   *index;
3143
3144                 mod->brush.ismcbsp = true;
3145                 mod->brush.ishlbsp = false;
3146
3147                 mod_base = (unsigned char*)buffer;
3148
3149                 index = mod_base;
3150                 index += 8;
3151                 i = SB_ReadInt (&index);
3152                 if (i != MCBSPVERSION)
3153                         Host_Error("Mod_Q1BSP_Load: %s has wrong version number(%i should be %i)", mod->name, i, MCBSPVERSION);
3154
3155         // read hull info
3156                 hullinfo.numhulls = LittleLong(*(int*)index); index += 4;
3157                 hullinfo.filehulls = hullinfo.numhulls;
3158                 VectorClear (hullinfo.hullsizes[0][0]);
3159                 VectorClear (hullinfo.hullsizes[0][1]);
3160                 for (i = 1; i < hullinfo.numhulls; i++)
3161                 {
3162                         hullinfo.hullsizes[i][0][0] = SB_ReadFloat (&index);
3163                         hullinfo.hullsizes[i][0][1] = SB_ReadFloat (&index);
3164                         hullinfo.hullsizes[i][0][2] = SB_ReadFloat (&index);
3165                         hullinfo.hullsizes[i][1][0] = SB_ReadFloat (&index);
3166                         hullinfo.hullsizes[i][1][1] = SB_ReadFloat (&index);
3167                         hullinfo.hullsizes[i][1][2] = SB_ReadFloat (&index);
3168                 }
3169
3170         // read lumps
3171                 _header.version = 0;
3172                 for (i = 0; i < HEADER_LUMPS; i++)
3173                 {
3174                         _header.lumps[i].fileofs = SB_ReadInt (&index);
3175                         _header.lumps[i].filelen = SB_ReadInt (&index);
3176                 }
3177
3178                 header = &_header;
3179         }
3180         else
3181         {
3182                 header = (dheader_t *)buffer;
3183
3184                 i = LittleLong(header->version);
3185                 if (i != BSPVERSION && i != 30)
3186                         Host_Error("Mod_Q1BSP_Load: %s has wrong version number(%i should be %i(Quake) or 30(HalfLife)", mod->name, i, BSPVERSION);
3187                 mod->brush.ishlbsp = i == 30;
3188                 mod->brush.ismcbsp = false;
3189
3190         // fill in hull info
3191                 VectorClear (hullinfo.hullsizes[0][0]);
3192                 VectorClear (hullinfo.hullsizes[0][1]);
3193                 if (mod->brush.ishlbsp)
3194                 {
3195                         hullinfo.numhulls = 4;
3196                         hullinfo.filehulls = 4;
3197                         VectorSet (hullinfo.hullsizes[1][0], -16, -16, -36);
3198                         VectorSet (hullinfo.hullsizes[1][1], 16, 16, 36);
3199                         VectorSet (hullinfo.hullsizes[2][0], -32, -32, -32);
3200                         VectorSet (hullinfo.hullsizes[2][1], 32, 32, 32);
3201                         VectorSet (hullinfo.hullsizes[3][0], -16, -16, -18);
3202                         VectorSet (hullinfo.hullsizes[3][1], 16, 16, 18);
3203                 }
3204                 else
3205                 {
3206                         hullinfo.numhulls = 3;
3207                         hullinfo.filehulls = 4;
3208                         VectorSet (hullinfo.hullsizes[1][0], -16, -16, -24);
3209                         VectorSet (hullinfo.hullsizes[1][1], 16, 16, 32);
3210                         VectorSet (hullinfo.hullsizes[2][0], -32, -32, -24);
3211                         VectorSet (hullinfo.hullsizes[2][1], 32, 32, 64);
3212                 }
3213
3214         // read lumps
3215                 mod_base = (unsigned char*)buffer;
3216                 for (i = 0; i < HEADER_LUMPS; i++)
3217                 {
3218                         header->lumps[i].fileofs = LittleLong(header->lumps[i].fileofs);
3219                         header->lumps[i].filelen = LittleLong(header->lumps[i].filelen);
3220                 }
3221         }
3222
3223         mod->soundfromcenter = true;
3224         mod->TraceBox = Mod_Q1BSP_TraceBox;
3225         mod->brush.SuperContentsFromNativeContents = Mod_Q1BSP_SuperContentsFromNativeContents;
3226         mod->brush.NativeContentsFromSuperContents = Mod_Q1BSP_NativeContentsFromSuperContents;
3227         mod->brush.GetPVS = Mod_Q1BSP_GetPVS;
3228         mod->brush.FatPVS = Mod_Q1BSP_FatPVS;
3229         mod->brush.BoxTouchingPVS = Mod_Q1BSP_BoxTouchingPVS;
3230         mod->brush.BoxTouchingLeafPVS = Mod_Q1BSP_BoxTouchingLeafPVS;
3231         mod->brush.BoxTouchingVisibleLeafs = Mod_Q1BSP_BoxTouchingVisibleLeafs;
3232         mod->brush.FindBoxClusters = Mod_Q1BSP_FindBoxClusters;
3233         mod->brush.LightPoint = Mod_Q1BSP_LightPoint;
3234         mod->brush.FindNonSolidLocation = Mod_Q1BSP_FindNonSolidLocation;
3235         mod->brush.AmbientSoundLevelsForPoint = Mod_Q1BSP_AmbientSoundLevelsForPoint;
3236         mod->brush.RoundUpToHullSize = Mod_Q1BSP_RoundUpToHullSize;
3237         mod->brush.PointInLeaf = Mod_Q1BSP_PointInLeaf;
3238
3239         if (loadmodel->isworldmodel)
3240         {
3241                 Cvar_SetValue("halflifebsp", mod->brush.ishlbsp);
3242                 Cvar_SetValue("mcbsp", mod->brush.ismcbsp);
3243         }
3244
3245 // load into heap
3246
3247         // store which lightmap format to use
3248         mod->brushq1.lightmaprgba = r_lightmaprgba.integer;
3249
3250         mod->brush.qw_md4sum = 0;
3251         mod->brush.qw_md4sum2 = 0;
3252         for (i = 0;i < HEADER_LUMPS;i++)
3253         {
3254                 if (i == LUMP_ENTITIES)
3255                         continue;
3256                 mod->brush.qw_md4sum ^= LittleLong(Com_BlockChecksum(mod_base + header->lumps[i].fileofs, header->lumps[i].filelen));
3257                 if (i == LUMP_VISIBILITY || i == LUMP_LEAFS || i == LUMP_NODES)
3258                         continue;
3259                 mod->brush.qw_md4sum2 ^= LittleLong(Com_BlockChecksum(mod_base + header->lumps[i].fileofs, header->lumps[i].filelen));
3260         }
3261
3262         Mod_Q1BSP_LoadEntities(&header->lumps[LUMP_ENTITIES]);
3263         Mod_Q1BSP_LoadVertexes(&header->lumps[LUMP_VERTEXES]);
3264         Mod_Q1BSP_LoadEdges(&header->lumps[LUMP_EDGES]);
3265         Mod_Q1BSP_LoadSurfedges(&header->lumps[LUMP_SURFEDGES]);
3266         Mod_Q1BSP_LoadTextures(&header->lumps[LUMP_TEXTURES]);
3267         Mod_Q1BSP_LoadLighting(&header->lumps[LUMP_LIGHTING]);
3268         Mod_Q1BSP_LoadPlanes(&header->lumps[LUMP_PLANES]);
3269         Mod_Q1BSP_LoadTexinfo(&header->lumps[LUMP_TEXINFO]);
3270         Mod_Q1BSP_LoadFaces(&header->lumps[LUMP_FACES]);
3271         Mod_Q1BSP_LoadLeaffaces(&header->lumps[LUMP_MARKSURFACES]);
3272         Mod_Q1BSP_LoadVisibility(&header->lumps[LUMP_VISIBILITY]);
3273         // load submodels before leafs because they contain the number of vis leafs
3274         Mod_Q1BSP_LoadSubmodels(&header->lumps[LUMP_MODELS], &hullinfo);
3275         Mod_Q1BSP_LoadLeafs(&header->lumps[LUMP_LEAFS]);
3276         Mod_Q1BSP_LoadNodes(&header->lumps[LUMP_NODES]);
3277         Mod_Q1BSP_LoadClipnodes(&header->lumps[LUMP_CLIPNODES], &hullinfo);
3278
3279         if (!mod->brushq1.lightdata)
3280                 mod->brush.LightPoint = NULL;
3281
3282         if (mod->brushq1.data_compressedpvs)
3283                 Mem_Free(mod->brushq1.data_compressedpvs);
3284         mod->brushq1.data_compressedpvs = NULL;
3285         mod->brushq1.num_compressedpvs = 0;
3286
3287         Mod_Q1BSP_MakeHull0();
3288         Mod_Q1BSP_MakePortals();
3289
3290         mod->numframes = 2;             // regular and alternate animation
3291         mod->numskins = 1;
3292
3293         mainmempool = mod->mempool;
3294
3295         // make a single combined shadow mesh to allow optimized shadow volume creation
3296         numshadowmeshtriangles = 0;
3297         for (j = 0, surface = loadmodel->data_surfaces;j < loadmodel->num_surfaces;j++, surface++)
3298         {
3299                 surface->num_firstshadowmeshtriangle = numshadowmeshtriangles;
3300                 numshadowmeshtriangles += surface->num_triangles;
3301         }
3302         loadmodel->brush.shadowmesh = Mod_ShadowMesh_Begin(loadmodel->mempool, numshadowmeshtriangles * 3, numshadowmeshtriangles, NULL, NULL, NULL, false, false, true);
3303         for (j = 0, surface = loadmodel->data_surfaces;j < loadmodel->num_surfaces;j++, surface++)
3304                 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));
3305         loadmodel->brush.shadowmesh = Mod_ShadowMesh_Finish(loadmodel->mempool, loadmodel->brush.shadowmesh, false, true);
3306         Mod_BuildTriangleNeighbors(loadmodel->brush.shadowmesh->neighbor3i, loadmodel->brush.shadowmesh->element3i, loadmodel->brush.shadowmesh->numtriangles);
3307
3308         if (loadmodel->brush.numsubmodels)
3309                 loadmodel->brush.submodels = (model_t **)Mem_Alloc(loadmodel->mempool, loadmodel->brush.numsubmodels * sizeof(model_t *));
3310
3311         if (loadmodel->isworldmodel)
3312         {
3313                 // clear out any stale submodels or worldmodels lying around
3314                 // if we did this clear before now, an error might abort loading and
3315                 // leave things in a bad state
3316                 Mod_RemoveStaleWorldModels(loadmodel);
3317         }
3318
3319         // LordHavoc: to clear the fog around the original quake submodel code, I
3320         // will explain:
3321         // first of all, some background info on the submodels:
3322         // model 0 is the map model (the world, named maps/e1m1.bsp for example)
3323         // model 1 and higher are submodels (doors and the like, named *1, *2, etc)
3324         // now the weird for loop itself:
3325         // the loop functions in an odd way, on each iteration it sets up the
3326         // current 'mod' model (which despite the confusing code IS the model of
3327         // the number i), at the end of the loop it duplicates the model to become
3328         // the next submodel, and loops back to set up the new submodel.
3329
3330         // LordHavoc: now the explanation of my sane way (which works identically):
3331         // set up the world model, then on each submodel copy from the world model
3332         // and set up the submodel with the respective model info.
3333         for (i = 0;i < mod->brush.numsubmodels;i++)
3334         {
3335                 // LordHavoc: this code was originally at the end of this loop, but
3336                 // has been transformed to something more readable at the start here.
3337
3338                 if (i > 0)
3339                 {
3340                         char name[10];
3341                         // LordHavoc: only register submodels if it is the world
3342                         // (prevents external bsp models from replacing world submodels with
3343                         //  their own)
3344                         if (!loadmodel->isworldmodel)
3345                                 continue;
3346                         // duplicate the basic information
3347                         sprintf(name, "*%i", i);
3348                         mod = Mod_FindName(name);
3349                         // copy the base model to this one
3350                         *mod = *loadmodel;
3351                         // rename the clone back to its proper name
3352                         strlcpy(mod->name, name, sizeof(mod->name));
3353                         // textures and memory belong to the main model
3354                         mod->texturepool = NULL;
3355                         mod->mempool = NULL;
3356                 }
3357
3358                 mod->brush.submodel = i;
3359
3360                 if (loadmodel->brush.submodels)
3361                         loadmodel->brush.submodels[i] = mod;
3362
3363                 bm = &mod->brushq1.submodels[i];
3364
3365                 mod->brushq1.hulls[0].firstclipnode = bm->headnode[0];
3366                 for (j=1 ; j<MAX_MAP_HULLS ; j++)
3367                 {
3368                         mod->brushq1.hulls[j].firstclipnode = bm->headnode[j];
3369                         mod->brushq1.hulls[j].lastclipnode = mod->brushq1.numclipnodes - 1;
3370                 }
3371
3372                 mod->firstmodelsurface = bm->firstface;
3373                 mod->nummodelsurfaces = bm->numfaces;
3374
3375                 // make the model surface list (used by shadowing/lighting)
3376                 mod->surfacelist = (int *)Mem_Alloc(loadmodel->mempool, mod->nummodelsurfaces * sizeof(*mod->surfacelist));
3377                 for (j = 0;j < mod->nummodelsurfaces;j++)
3378                         mod->surfacelist[j] = mod->firstmodelsurface + j;
3379
3380                 // this gets altered below if sky is used
3381                 mod->DrawSky = NULL;
3382                 mod->Draw = R_Q1BSP_Draw;
3383                 mod->GetLightInfo = R_Q1BSP_GetLightInfo;
3384                 mod->CompileShadowVolume = R_Q1BSP_CompileShadowVolume;
3385                 mod->DrawShadowVolume = R_Q1BSP_DrawShadowVolume;
3386                 mod->DrawLight = R_Q1BSP_DrawLight;
3387                 if (i != 0)
3388                 {
3389                         mod->brush.GetPVS = NULL;
3390                         mod->brush.FatPVS = NULL;
3391                         mod->brush.BoxTouchingPVS = NULL;
3392                         mod->brush.BoxTouchingLeafPVS = NULL;
3393                         mod->brush.BoxTouchingVisibleLeafs = NULL;
3394                         mod->brush.FindBoxClusters = NULL;
3395                         mod->brush.LightPoint = NULL;
3396                         mod->brush.AmbientSoundLevelsForPoint = NULL;
3397                 }
3398                 Mod_Q1BSP_BuildLightmapUpdateChains(loadmodel->mempool, mod);
3399                 if (mod->nummodelsurfaces)
3400                 {
3401                         // LordHavoc: calculate bmodel bounding box rather than trusting what it says
3402                         mod->normalmins[0] = mod->normalmins[1] = mod->normalmins[2] = 1000000000.0f;
3403                         mod->normalmaxs[0] = mod->normalmaxs[1] = mod->normalmaxs[2] = -1000000000.0f;
3404                         modelyawradius = 0;
3405                         modelradius = 0;
3406                         for (j = 0, surface = &mod->data_surfaces[mod->firstmodelsurface];j < mod->nummodelsurfaces;j++, surface++)
3407                         {
3408                                 // we only need to have a drawsky function if it is used(usually only on world model)
3409                                 if (surface->texture->basematerialflags & MATERIALFLAG_SKY)
3410                                         mod->DrawSky = R_Q1BSP_DrawSky;
3411                                 // calculate bounding shapes
3412                                 for (k = 0, vec = (loadmodel->surfmesh.data_vertex3f + 3 * surface->num_firstvertex);k < surface->num_vertices;k++, vec += 3)
3413                                 {
3414                                         if (mod->normalmins[0] > vec[0]) mod->normalmins[0] = vec[0];
3415                                         if (mod->normalmins[1] > vec[1]) mod->normalmins[1] = vec[1];
3416                                         if (mod->normalmins[2] > vec[2]) mod->normalmins[2] = vec[2];
3417                                         if (mod->normalmaxs[0] < vec[0]) mod->normalmaxs[0] = vec[0];
3418                                         if (mod->normalmaxs[1] < vec[1]) mod->normalmaxs[1] = vec[1];
3419                                         if (mod->normalmaxs[2] < vec[2]) mod->normalmaxs[2] = vec[2];
3420                                         dist = vec[0]*vec[0]+vec[1]*vec[1];
3421                                         if (modelyawradius < dist)
3422                                                 modelyawradius = dist;
3423                                         dist += vec[2]*vec[2];
3424                                         if (modelradius < dist)
3425                                                 modelradius = dist;
3426                                 }
3427                         }
3428                         modelyawradius = sqrt(modelyawradius);
3429                         modelradius = sqrt(modelradius);
3430                         mod->yawmins[0] = mod->yawmins[1] = - (mod->yawmaxs[0] = mod->yawmaxs[1] = modelyawradius);
3431                         mod->yawmins[2] = mod->normalmins[2];
3432                         mod->yawmaxs[2] = mod->normalmaxs[2];
3433                         mod->rotatedmins[0] = mod->rotatedmins[1] = mod->rotatedmins[2] = -modelradius;
3434                         mod->rotatedmaxs[0] = mod->rotatedmaxs[1] = mod->rotatedmaxs[2] = modelradius;
3435                         mod->radius = modelradius;
3436                         mod->radius2 = modelradius * modelradius;
3437                 }
3438                 else
3439                 {
3440                         // LordHavoc: empty submodel(lacrima.bsp has such a glitch)
3441                         Con_Printf("warning: empty submodel *%i in %s\n", i+1, loadmodel->name);
3442                 }
3443                 //mod->brushq1.num_visleafs = bm->visleafs;
3444         }
3445
3446         Mod_Q1BSP_LoadMapBrushes();
3447
3448         //Mod_Q1BSP_ProcessLightList();
3449
3450         if (developer.integer >= 10)
3451                 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);
3452 }
3453
3454 static void Mod_Q2BSP_LoadEntities(lump_t *l)
3455 {
3456 }
3457
3458 static void Mod_Q2BSP_LoadPlanes(lump_t *l)
3459 {
3460 /*
3461         d_t *in;
3462         m_t *out;
3463         int i, count;
3464
3465         in = (void *)(mod_base + l->fileofs);
3466         if (l->filelen % sizeof(*in))
3467                 Host_Error("Mod_Q2BSP_LoadPlanes: funny lump size in %s",loadmodel->name);
3468         count = l->filelen / sizeof(*in);
3469         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
3470
3471         loadmodel-> = out;
3472         loadmodel->num = count;
3473
3474         for (i = 0;i < count;i++, in++, out++)
3475         {
3476         }
3477 */
3478 }
3479
3480 static void Mod_Q2BSP_LoadVertices(lump_t *l)
3481 {
3482 /*
3483         d_t *in;
3484         m_t *out;
3485         int i, count;
3486
3487         in = (void *)(mod_base + l->fileofs);
3488         if (l->filelen % sizeof(*in))
3489                 Host_Error("Mod_Q2BSP_LoadVertices: funny lump size in %s",loadmodel->name);
3490         count = l->filelen / sizeof(*in);
3491         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
3492
3493         loadmodel-> = out;
3494         loadmodel->num = count;
3495
3496         for (i = 0;i < count;i++, in++, out++)
3497         {
3498         }
3499 */
3500 }
3501
3502 static void Mod_Q2BSP_LoadVisibility(lump_t *l)
3503 {
3504 /*
3505         d_t *in;
3506         m_t *out;
3507         int i, count;
3508
3509         in = (void *)(mod_base + l->fileofs);
3510         if (l->filelen % sizeof(*in))
3511                 Host_Error("Mod_Q2BSP_LoadVisibility: funny lump size in %s",loadmodel->name);
3512         count = l->filelen / sizeof(*in);
3513         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
3514
3515         loadmodel-> = out;
3516         loadmodel->num = count;
3517
3518         for (i = 0;i < count;i++, in++, out++)
3519         {
3520         }
3521 */
3522 }
3523
3524 static void Mod_Q2BSP_LoadNodes(lump_t *l)
3525 {
3526 /*
3527         d_t *in;
3528         m_t *out;
3529         int i, count;
3530
3531         in = (void *)(mod_base + l->fileofs);
3532         if (l->filelen % sizeof(*in))
3533                 Host_Error("Mod_Q2BSP_LoadNodes: funny lump size in %s",loadmodel->name);
3534         count = l->filelen / sizeof(*in);
3535         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
3536
3537         loadmodel-> = out;
3538         loadmodel->num = count;
3539
3540         for (i = 0;i < count;i++, in++, out++)
3541         {
3542         }
3543 */
3544 }
3545
3546 static void Mod_Q2BSP_LoadTexInfo(lump_t *l)
3547 {
3548 /*
3549         d_t *in;
3550         m_t *out;
3551         int i, count;
3552
3553         in = (void *)(mod_base + l->fileofs);
3554         if (l->filelen % sizeof(*in))
3555                 Host_Error("Mod_Q2BSP_LoadTexInfo: funny lump size in %s",loadmodel->name);
3556         count = l->filelen / sizeof(*in);
3557         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
3558
3559         loadmodel-> = out;
3560         loadmodel->num = count;
3561
3562         for (i = 0;i < count;i++, in++, out++)
3563         {
3564         }
3565 */
3566 }
3567
3568 static void Mod_Q2BSP_LoadFaces(lump_t *l)
3569 {
3570 /*
3571         d_t *in;
3572         m_t *out;
3573         int i, count;
3574
3575         in = (void *)(mod_base + l->fileofs);
3576         if (l->filelen % sizeof(*in))
3577                 Host_Error("Mod_Q2BSP_LoadFaces: funny lump size in %s",loadmodel->name);
3578         count = l->filelen / sizeof(*in);
3579         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
3580
3581         loadmodel-> = out;
3582         loadmodel->num = count;
3583
3584         for (i = 0;i < count;i++, in++, out++)
3585         {
3586         }
3587 */
3588 }
3589
3590 static void Mod_Q2BSP_LoadLighting(lump_t *l)
3591 {
3592 /*
3593         d_t *in;
3594         m_t *out;
3595         int i, count;
3596
3597         in = (void *)(mod_base + l->fileofs);
3598         if (l->filelen % sizeof(*in))
3599                 Host_Error("Mod_Q2BSP_LoadLighting: funny lump size in %s",loadmodel->name);
3600         count = l->filelen / sizeof(*in);
3601         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
3602
3603         loadmodel-> = out;
3604         loadmodel->num = count;
3605
3606         for (i = 0;i < count;i++, in++, out++)
3607         {
3608         }
3609 */
3610 }
3611
3612 static void Mod_Q2BSP_LoadLeafs(lump_t *l)
3613 {
3614 /*
3615         d_t *in;
3616         m_t *out;
3617         int i, count;
3618
3619         in = (void *)(mod_base + l->fileofs);
3620         if (l->filelen % sizeof(*in))
3621                 Host_Error("Mod_Q2BSP_LoadLeafs: funny lump size in %s",loadmodel->name);
3622         count = l->filelen / sizeof(*in);
3623         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
3624
3625         loadmodel-> = out;
3626         loadmodel->num = count;
3627
3628         for (i = 0;i < count;i++, in++, out++)
3629         {
3630         }
3631 */
3632 }
3633
3634 static void Mod_Q2BSP_LoadLeafFaces(lump_t *l)
3635 {
3636 /*
3637         d_t *in;
3638         m_t *out;
3639         int i, count;
3640
3641         in = (void *)(mod_base + l->fileofs);
3642         if (l->filelen % sizeof(*in))
3643                 Host_Error("Mod_Q2BSP_LoadLeafFaces: funny lump size in %s",loadmodel->name);
3644         count = l->filelen / sizeof(*in);
3645         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
3646
3647         loadmodel-> = out;
3648         loadmodel->num = count;
3649
3650         for (i = 0;i < count;i++, in++, out++)
3651         {
3652         }
3653 */
3654 }
3655
3656 static void Mod_Q2BSP_LoadLeafBrushes(lump_t *l)
3657 {
3658 /*
3659         d_t *in;
3660         m_t *out;
3661         int i, count;
3662
3663         in = (void *)(mod_base + l->fileofs);
3664         if (l->filelen % sizeof(*in))
3665                 Host_Error("Mod_Q2BSP_LoadLeafBrushes: funny lump size in %s",loadmodel->name);
3666         count = l->filelen / sizeof(*in);
3667         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
3668
3669         loadmodel-> = out;
3670         loadmodel->num = count;
3671
3672         for (i = 0;i < count;i++, in++, out++)
3673         {
3674         }
3675 */
3676 }
3677
3678 static void Mod_Q2BSP_LoadEdges(lump_t *l)
3679 {
3680 /*
3681         d_t *in;
3682         m_t *out;
3683         int i, count;
3684
3685         in = (void *)(mod_base + l->fileofs);
3686         if (l->filelen % sizeof(*in))
3687                 Host_Error("Mod_Q2BSP_LoadEdges: funny lump size in %s",loadmodel->name);
3688         count = l->filelen / sizeof(*in);
3689         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
3690
3691         loadmodel-> = out;
3692         loadmodel->num = count;
3693
3694         for (i = 0;i < count;i++, in++, out++)
3695         {
3696         }
3697 */
3698 }
3699
3700 static void Mod_Q2BSP_LoadSurfEdges(lump_t *l)
3701 {
3702 /*
3703         d_t *in;
3704         m_t *out;
3705         int i, count;
3706
3707         in = (void *)(mod_base + l->fileofs);
3708         if (l->filelen % sizeof(*in))
3709                 Host_Error("Mod_Q2BSP_LoadSurfEdges: funny lump size in %s",loadmodel->name);
3710         count = l->filelen / sizeof(*in);
3711         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
3712
3713         loadmodel-> = out;
3714         loadmodel->num = count;
3715
3716         for (i = 0;i < count;i++, in++, out++)
3717         {
3718         }
3719 */
3720 }
3721
3722 static void Mod_Q2BSP_LoadBrushes(lump_t *l)
3723 {
3724 /*
3725         d_t *in;
3726         m_t *out;
3727         int i, count;
3728
3729         in = (void *)(mod_base + l->fileofs);
3730         if (l->filelen % sizeof(*in))
3731                 Host_Error("Mod_Q2BSP_LoadBrushes: funny lump size in %s",loadmodel->name);
3732         count = l->filelen / sizeof(*in);
3733         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
3734
3735         loadmodel-> = out;
3736         loadmodel->num = count;
3737
3738         for (i = 0;i < count;i++, in++, out++)
3739         {
3740         }
3741 */
3742 }
3743
3744 static void Mod_Q2BSP_LoadBrushSides(lump_t *l)
3745 {
3746 /*
3747         d_t *in;
3748         m_t *out;
3749         int i, count;
3750
3751         in = (void *)(mod_base + l->fileofs);
3752         if (l->filelen % sizeof(*in))
3753                 Host_Error("Mod_Q2BSP_LoadBrushSides: funny lump size in %s",loadmodel->name);
3754         count = l->filelen / sizeof(*in);
3755         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
3756
3757         loadmodel-> = out;
3758         loadmodel->num = count;
3759
3760         for (i = 0;i < count;i++, in++, out++)
3761         {
3762         }
3763 */
3764 }
3765
3766 static void Mod_Q2BSP_LoadAreas(lump_t *l)
3767 {
3768 /*
3769         d_t *in;
3770         m_t *out;
3771         int i, count;
3772
3773         in = (void *)(mod_base + l->fileofs);
3774         if (l->filelen % sizeof(*in))
3775                 Host_Error("Mod_Q2BSP_LoadAreas: funny lump size in %s",loadmodel->name);
3776         count = l->filelen / sizeof(*in);
3777         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
3778
3779         loadmodel-> = out;
3780         loadmodel->num = count;
3781
3782         for (i = 0;i < count;i++, in++, out++)
3783         {
3784         }
3785 */
3786 }
3787
3788 static void Mod_Q2BSP_LoadAreaPortals(lump_t *l)
3789 {
3790 /*
3791         d_t *in;
3792         m_t *out;
3793         int i, count;
3794
3795         in = (void *)(mod_base + l->fileofs);
3796         if (l->filelen % sizeof(*in))
3797                 Host_Error("Mod_Q2BSP_LoadAreaPortals: funny lump size in %s",loadmodel->name);
3798         count = l->filelen / sizeof(*in);
3799         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
3800
3801         loadmodel-> = out;
3802         loadmodel->num = count;
3803
3804         for (i = 0;i < count;i++, in++, out++)
3805         {
3806         }
3807 */
3808 }
3809
3810 static void Mod_Q2BSP_LoadModels(lump_t *l)
3811 {
3812 /*
3813         d_t *in;
3814         m_t *out;
3815         int i, count;
3816
3817         in = (void *)(mod_base + l->fileofs);
3818         if (l->filelen % sizeof(*in))
3819                 Host_Error("Mod_Q2BSP_LoadModels: funny lump size in %s",loadmodel->name);
3820         count = l->filelen / sizeof(*in);
3821         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
3822
3823         loadmodel-> = out;
3824         loadmodel->num = count;
3825
3826         for (i = 0;i < count;i++, in++, out++)
3827         {
3828         }
3829 */
3830 }
3831
3832 void static Mod_Q2BSP_Load(model_t *mod, void *buffer, void *bufferend)
3833 {
3834         int i;
3835         q2dheader_t *header;
3836
3837         Host_Error("Mod_Q2BSP_Load: not yet implemented");
3838
3839         mod->type = mod_brushq2;
3840
3841         header = (q2dheader_t *)buffer;
3842
3843         i = LittleLong(header->version);
3844         if (i != Q2BSPVERSION)
3845                 Host_Error("Mod_Q2BSP_Load: %s has wrong version number (%i, should be %i)", mod->name, i, Q2BSPVERSION);
3846         mod->brush.ishlbsp = false;
3847         mod->brush.ismcbsp = false;
3848         if (loadmodel->isworldmodel)
3849         {
3850                 Cvar_SetValue("halflifebsp", mod->brush.ishlbsp);
3851                 Cvar_SetValue("mcbsp", mod->brush.ismcbsp);
3852         }
3853
3854         mod_base = (unsigned char *)header;
3855
3856         // swap all the lumps
3857         for (i = 0;i < (int) sizeof(*header) / 4;i++)
3858                 ((int *)header)[i] = LittleLong(((int *)header)[i]);
3859
3860         // store which lightmap format to use
3861         mod->brushq1.lightmaprgba = r_lightmaprgba.integer;
3862
3863         mod->brush.qw_md4sum = 0;
3864         mod->brush.qw_md4sum2 = 0;
3865         for (i = 0;i < Q2HEADER_LUMPS;i++)
3866         {
3867                 if (i == Q2LUMP_ENTITIES)
3868                         continue;
3869                 mod->brush.qw_md4sum ^= Com_BlockChecksum(mod_base + header->lumps[i].fileofs, header->lumps[i].filelen);
3870                 if (i == Q2LUMP_VISIBILITY || i == Q2LUMP_LEAFS || i == Q2LUMP_NODES)
3871                         continue;
3872                 mod->brush.qw_md4sum2 ^= Com_BlockChecksum(mod_base + header->lumps[i].fileofs, header->lumps[i].filelen);
3873         }
3874
3875         Mod_Q2BSP_LoadEntities(&header->lumps[Q2LUMP_ENTITIES]);
3876         Mod_Q2BSP_LoadPlanes(&header->lumps[Q2LUMP_PLANES]);
3877         Mod_Q2BSP_LoadVertices(&header->lumps[Q2LUMP_VERTEXES]);
3878         Mod_Q2BSP_LoadVisibility(&header->lumps[Q2LUMP_VISIBILITY]);
3879         Mod_Q2BSP_LoadNodes(&header->lumps[Q2LUMP_NODES]);
3880         Mod_Q2BSP_LoadTexInfo(&header->lumps[Q2LUMP_TEXINFO]);
3881         Mod_Q2BSP_LoadFaces(&header->lumps[Q2LUMP_FACES]);
3882         Mod_Q2BSP_LoadLighting(&header->lumps[Q2LUMP_LIGHTING]);
3883         Mod_Q2BSP_LoadLeafs(&header->lumps[Q2LUMP_LEAFS]);
3884         Mod_Q2BSP_LoadLeafFaces(&header->lumps[Q2LUMP_LEAFFACES]);
3885         Mod_Q2BSP_LoadLeafBrushes(&header->lumps[Q2LUMP_LEAFBRUSHES]);
3886         Mod_Q2BSP_LoadEdges(&header->lumps[Q2LUMP_EDGES]);
3887         Mod_Q2BSP_LoadSurfEdges(&header->lumps[Q2LUMP_SURFEDGES]);
3888         Mod_Q2BSP_LoadBrushes(&header->lumps[Q2LUMP_BRUSHES]);
3889         Mod_Q2BSP_LoadBrushSides(&header->lumps[Q2LUMP_BRUSHSIDES]);
3890         Mod_Q2BSP_LoadAreas(&header->lumps[Q2LUMP_AREAS]);
3891         Mod_Q2BSP_LoadAreaPortals(&header->lumps[Q2LUMP_AREAPORTALS]);
3892         // LordHavoc: must go last because this makes the submodels
3893         Mod_Q2BSP_LoadModels(&header->lumps[Q2LUMP_MODELS]);
3894 }
3895
3896 static int Mod_Q3BSP_SuperContentsFromNativeContents(model_t *model, int nativecontents);
3897 static int Mod_Q3BSP_NativeContentsFromSuperContents(model_t *model, int supercontents);
3898
3899 static void Mod_Q3BSP_LoadEntities(lump_t *l)
3900 {
3901         const char *data;
3902         char key[128], value[MAX_INPUTLINE];
3903         float v[3];
3904         loadmodel->brushq3.num_lightgrid_cellsize[0] = 64;
3905         loadmodel->brushq3.num_lightgrid_cellsize[1] = 64;
3906         loadmodel->brushq3.num_lightgrid_cellsize[2] = 128;
3907         if (!l->filelen)
3908                 return;
3909         loadmodel->brush.entities = (char *)Mem_Alloc(loadmodel->mempool, l->filelen);
3910         memcpy(loadmodel->brush.entities, mod_base + l->fileofs, l->filelen);
3911         data = loadmodel->brush.entities;
3912         // some Q3 maps override the lightgrid_cellsize with a worldspawn key
3913         if (data && COM_ParseTokenConsole(&data) && com_token[0] == '{')
3914         {
3915                 while (1)
3916                 {
3917                         if (!COM_ParseTokenConsole(&data))
3918                                 break; // error
3919                         if (com_token[0] == '}')
3920                                 break; // end of worldspawn
3921                         if (com_token[0] == '_')
3922                                 strlcpy(key, com_token + 1, sizeof(key));
3923                         else
3924                                 strlcpy(key, com_token, sizeof(key));
3925                         while (key[strlen(key)-1] == ' ') // remove trailing spaces
3926                                 key[strlen(key)-1] = 0;
3927                         if (!COM_ParseTokenConsole(&data))
3928                                 break; // error
3929                         strlcpy(value, com_token, sizeof(value));
3930                         if (!strcmp("gridsize", key))
3931                         {
3932                                 if (sscanf(value, "%f %f %f", &v[0], &v[1], &v[2]) == 3 && v[0] != 0 && v[1] != 0 && v[2] != 0)
3933                                         VectorCopy(v, loadmodel->brushq3.num_lightgrid_cellsize);
3934                         }
3935                 }
3936         }
3937 }
3938
3939 // FIXME: make MAXSHADERS dynamic
3940 #define Q3SHADER_MAXSHADERS 4096
3941 #define Q3SHADER_MAXLAYERS 8
3942
3943 typedef struct q3shaderinfo_layer_s
3944 {
3945         char texturename[Q3PATHLENGTH];
3946         int blendfunc[2];
3947         qboolean rgbgenvertex;
3948         qboolean alphagenvertex;
3949 }
3950 q3shaderinfo_layer_t;
3951
3952 typedef struct q3shaderinfo_s
3953 {
3954         char name[Q3PATHLENGTH];
3955         int surfaceparms;
3956         int textureflags;
3957         int numlayers;
3958         qboolean lighting;
3959         qboolean vertexalpha;
3960         qboolean textureblendalpha;
3961         q3shaderinfo_layer_t *primarylayer, *backgroundlayer;
3962         q3shaderinfo_layer_t layers[Q3SHADER_MAXLAYERS];
3963         char skyboxname[Q3PATHLENGTH];
3964 }
3965 q3shaderinfo_t;
3966
3967 int q3shaders_numshaders;
3968 q3shaderinfo_t q3shaders_shaders[Q3SHADER_MAXSHADERS];
3969
3970 static void Mod_Q3BSP_LoadShaders(void)
3971 {
3972         int j;
3973         int fileindex;
3974         fssearch_t *search;
3975         char *f;
3976         const char *text;
3977         q3shaderinfo_t *shader;
3978         q3shaderinfo_layer_t *layer;
3979         int numparameters;
3980         char parameter[4][Q3PATHLENGTH];
3981         search = FS_Search("scripts/*.shader", true, false);
3982         if (!search)
3983                 return;
3984         q3shaders_numshaders = 0;
3985         for (fileindex = 0;fileindex < search->numfilenames;fileindex++)
3986         {
3987                 text = f = (char *)FS_LoadFile(search->filenames[fileindex], tempmempool, false, NULL);
3988                 if (!f)
3989                         continue;
3990                 while (COM_ParseToken(&text, false))
3991                 {
3992                         if (q3shaders_numshaders >= Q3SHADER_MAXSHADERS)
3993                         {
3994                                 Con_Printf("Mod_Q3BSP_LoadShaders: too many shaders!\n");
3995                                 break;
3996                         }
3997                         shader = q3shaders_shaders + q3shaders_numshaders++;
3998                         memset(shader, 0, sizeof(*shader));
3999                         strlcpy(shader->name, com_token, sizeof(shader->name));
4000                         if (!COM_ParseToken(&text, false) || strcasecmp(com_token, "{"))
4001                         {
4002                                 Con_Printf("%s parsing error - expected \"{\", found \"%s\"\n", search->filenames[fileindex], com_token);
4003                                 break;
4004                         }
4005                         while (COM_ParseToken(&text, false))
4006                         {
4007                                 if (!strcasecmp(com_token, "}"))
4008                                         break;
4009                                 if (!strcasecmp(com_token, "{"))
4010                                 {
4011                                         if (shader->numlayers < Q3SHADER_MAXLAYERS)
4012                                         {
4013                                                 layer = shader->layers + shader->numlayers++;
4014                                                 layer->rgbgenvertex = false;
4015                                                 layer->alphagenvertex = false;
4016                                                 layer->blendfunc[0] = GL_ONE;
4017                                                 layer->blendfunc[1] = GL_ZERO;
4018                                         }
4019                                         else
4020                                                 layer = NULL;
4021                                         while (COM_ParseToken(&text, false))
4022                                         {
4023                                                 if (!strcasecmp(com_token, "}"))
4024                                                         break;
4025                                                 if (!strcasecmp(com_token, "\n"))
4026                                                         continue;
4027                                                 if (layer == NULL)
4028                                                         continue;
4029                                                 numparameters = 0;
4030                                                 for (j = 0;strcasecmp(com_token, "\n") && strcasecmp(com_token, "}");j++)
4031                                                 {
4032                                                         if (j < 4)
4033                                                         {
4034                                                                 strlcpy(parameter[j], com_token, sizeof(parameter[j]));
4035                                                                 numparameters = j + 1;
4036                                                         }
4037                                                         if (!COM_ParseToken(&text, true))
4038                                                                 break;
4039                                                 }
4040                                                 if (developer.integer >= 100)
4041                                                 {
4042                                                         Con_Printf("%s %i: ", shader->name, shader->numlayers - 1);
4043                                                         for (j = 0;j < numparameters;j++)
4044                                                                 Con_Printf(" %s", parameter[j]);
4045                                                         Con_Print("\n");
4046                                                 }
4047                                                 if (numparameters >= 2 && !strcasecmp(parameter[0], "blendfunc"))
4048                                                 {
4049                                                         if (numparameters == 2)
4050                                                         {
4051                                                                 if (!strcasecmp(parameter[1], "add"))
4052                                                                 {
4053                                                                         layer->blendfunc[0] = GL_ONE;
4054                                                                         layer->blendfunc[1] = GL_ONE;
4055                                                                 }
4056                                                                 else if (!strcasecmp(parameter[1], "filter"))
4057                                                                 {
4058                                                                         layer->blendfunc[0] = GL_DST_COLOR;
4059                                                                         layer->blendfunc[1] = GL_ZERO;
4060                                                                 }
4061                                                                 else if (!strcasecmp(parameter[1], "blend"))
4062                                                                 {
4063                                                                         layer->blendfunc[0] = GL_SRC_ALPHA;
4064                                                                         layer->blendfunc[1] = GL_ONE_MINUS_SRC_ALPHA;
4065                                                                 }
4066                                                         }
4067                                                         else if (numparameters == 3)
4068                                                         {
4069                                                                 int k;
4070                                                                 for (k = 0;k < 2;k++)
4071                                                                 {
4072                                                                         if (!strcasecmp(parameter[k+1], "GL_ONE"))
4073                                                                                 layer->blendfunc[k] = GL_ONE;
4074                                                                         else if (!strcasecmp(parameter[k+1], "GL_ZERO"))
4075                                                                                 layer->blendfunc[k] = GL_ZERO;
4076                                                                         else if (!strcasecmp(parameter[k+1], "GL_SRC_COLOR"))
4077                                                                                 layer->blendfunc[k] = GL_SRC_COLOR;
4078                                                                         else if (!strcasecmp(parameter[k+1], "GL_SRC_ALPHA"))
4079                                                                                 layer->blendfunc[k] = GL_SRC_ALPHA;
4080                                                                         else if (!strcasecmp(parameter[k+1], "GL_DST_COLOR"))
4081                                                                                 layer->blendfunc[k] = GL_DST_COLOR;
4082                                                                         else if (!strcasecmp(parameter[k+1], "GL_DST_ALPHA"))
4083                                                                                 layer->blendfunc[k] = GL_ONE_MINUS_DST_ALPHA;
4084                                                                         else if (!strcasecmp(parameter[k+1], "GL_ONE_MINUS_SRC_COLOR"))
4085                                                                                 layer->blendfunc[k] = GL_ONE_MINUS_SRC_COLOR;
4086                                                                         else if (!strcasecmp(parameter[k+1], "GL_ONE_MINUS_SRC_ALPHA"))
4087                                                                                 layer->blendfunc[k] = GL_ONE_MINUS_SRC_ALPHA;
4088                                                                         else if (!strcasecmp(parameter[k+1], "GL_ONE_MINUS_DST_COLOR"))
4089                                                                                 layer->blendfunc[k] = GL_ONE_MINUS_DST_COLOR;
4090                                                                         else if (!strcasecmp(parameter[k+1], "GL_ONE_MINUS_DST_ALPHA"))
4091                                                                                 layer->blendfunc[k] = GL_ONE_MINUS_DST_ALPHA;
4092                                                                         else
4093                                                                                 layer->blendfunc[k] = GL_ONE; // default in case of parsing error
4094                                                                 }
4095                                                         }
4096                                                 }
4097                                                 if (layer == shader->layers + 0)
4098                                                 {
4099                                                         if (numparameters >= 2 && !strcasecmp(parameter[0], "alphafunc"))
4100                                                                 shader->textureflags |= Q3TEXTUREFLAG_ALPHATEST;
4101                                                 }
4102                                                 if (numparameters >= 2 && (!strcasecmp(parameter[0], "map") || !strcasecmp(parameter[0], "clampmap")))
4103                                                 {
4104                                                         strlcpy(layer->texturename, parameter[1], sizeof(layer->texturename));
4105                                                         if (!strcasecmp(parameter[1], "$lightmap"))
4106                                                                 shader->lighting = true;
4107                                                 }
4108                                                 else if (numparameters >= 3 && !strcasecmp(parameter[0], "animmap"))
4109                                                         strlcpy(layer->texturename, parameter[2], sizeof(layer->texturename));
4110                                                 else if (numparameters >= 2 && !strcasecmp(parameter[0], "rgbgen") && !strcasecmp(parameter[1], "vertex"))
4111                                                         layer->rgbgenvertex = true;
4112                                                 else if (numparameters >= 2 && !strcasecmp(parameter[0], "alphagen") && !strcasecmp(parameter[1], "vertex"))
4113                                                         layer->alphagenvertex = true;
4114                                                 // break out a level if it was }
4115                                                 if (!strcasecmp(com_token, "}"))
4116                                                         break;
4117                                         }
4118                                         if (layer->rgbgenvertex)
4119                                                 shader->lighting = true;
4120                                         if (layer->alphagenvertex)
4121                                         {
4122                                                 if (layer == shader->layers + 0)
4123                                                 {
4124                                                         // vertex controlled transparency
4125                                                         shader->vertexalpha = true;
4126                                                 }
4127                                                 else
4128                                                 {
4129                                                         // multilayer terrain shader or similar
4130                                                         shader->textureblendalpha = true;
4131                                                 }
4132                                         }
4133                                         continue;
4134                                 }
4135                                 numparameters = 0;
4136                                 for (j = 0;strcasecmp(com_token, "\n") && strcasecmp(com_token, "}");j++)
4137                                 {
4138                                         if (j < 4)
4139                                         {
4140                                                 strlcpy(parameter[j], com_token, sizeof(parameter[j]));
4141                                                 numparameters = j + 1;
4142                                         }
4143                                         if (!COM_ParseToken(&text, true))
4144                                                 break;
4145                                 }
4146                                 if (fileindex == 0 && !strcasecmp(com_token, "}"))
4147                                         break;
4148                                 if (developer.integer >= 100)
4149                                 {
4150                                         Con_Printf("%s: ", shader->name);
4151                                         for (j = 0;j < numparameters;j++)
4152                                                 Con_Printf(" %s", parameter[j]);
4153                                         Con_Print("\n");
4154                                 }
4155                                 if (numparameters < 1)
4156                                         continue;
4157                                 if (!strcasecmp(parameter[0], "surfaceparm") && numparameters >= 2)
4158                                 {
4159                                         if (!strcasecmp(parameter[1], "alphashadow"))
4160                                                 shader->surfaceparms |= Q3SURFACEPARM_ALPHASHADOW;
4161                                         else if (!strcasecmp(parameter[1], "areaportal"))
4162                                                 shader->surfaceparms |= Q3SURFACEPARM_AREAPORTAL;
4163                                         else if (!strcasecmp(parameter[1], "botclip"))
4164                                                 shader->surfaceparms |= Q3SURFACEPARM_BOTCLIP;
4165                                         else if (!strcasecmp(parameter[1], "clusterportal"))
4166                                                 shader->surfaceparms |= Q3SURFACEPARM_CLUSTERPORTAL;
4167                                         else if (!strcasecmp(parameter[1], "detail"))
4168                                                 shader->surfaceparms |= Q3SURFACEPARM_DETAIL;
4169                                         else if (!strcasecmp(parameter[1], "donotenter"))
4170                                                 shader->surfaceparms |= Q3SURFACEPARM_DONOTENTER;
4171                                         else if (!strcasecmp(parameter[1], "dust"))
4172                                                 shader->surfaceparms |= Q3SURFACEPARM_DUST;
4173                                         else if (!strcasecmp(parameter[1], "hint"))
4174                                                 shader->surfaceparms |= Q3SURFACEPARM_HINT;
4175                                         else if (!strcasecmp(parameter[1], "fog"))
4176                                                 shader->surfaceparms |= Q3SURFACEPARM_FOG;
4177                                         else if (!strcasecmp(parameter[1], "lava"))
4178                                                 shader->surfaceparms |= Q3SURFACEPARM_LAVA;
4179                                         else if (!strcasecmp(parameter[1], "lightfilter"))
4180                                                 shader->surfaceparms |= Q3SURFACEPARM_LIGHTFILTER;
4181                                         else if (!strcasecmp(parameter[1], "lightgrid"))
4182                                                 shader->surfaceparms |= Q3SURFACEPARM_LIGHTGRID;
4183                                         else if (!strcasecmp(parameter[1], "metalsteps"))
4184                                                 shader->surfaceparms |= Q3SURFACEPARM_METALSTEPS;
4185                                         else if (!strcasecmp(parameter[1], "nodamage"))
4186                                                 shader->surfaceparms |= Q3SURFACEPARM_NODAMAGE;
4187                                         else if (!strcasecmp(parameter[1], "nodlight"))
4188                                                 shader->surfaceparms |= Q3SURFACEPARM_NODLIGHT;
4189                                         else if (!strcasecmp(parameter[1], "nodraw"))
4190                                                 shader->surfaceparms |= Q3SURFACEPARM_NODRAW;
4191                                         else if (!strcasecmp(parameter[1], "nodrop"))
4192                                                 shader->surfaceparms |= Q3SURFACEPARM_NODROP;
4193                                         else if (!strcasecmp(parameter[1], "noimpact"))
4194                                                 shader->surfaceparms |= Q3SURFACEPARM_NOIMPACT;
4195                                         else if (!strcasecmp(parameter[1], "nolightmap"))
4196                                                 shader->surfaceparms |= Q3SURFACEPARM_NOLIGHTMAP;
4197                                         else if (!strcasecmp(parameter[1], "nomarks"))
4198                                                 shader->surfaceparms |= Q3SURFACEPARM_NOMARKS;
4199                                         else if (!strcasecmp(parameter[1], "nomipmaps"))
4200                                                 shader->surfaceparms |= Q3SURFACEPARM_NOMIPMAPS;
4201                                         else if (!strcasecmp(parameter[1], "nonsolid"))
4202                                                 shader->surfaceparms |= Q3SURFACEPARM_NONSOLID;
4203                                         else if (!strcasecmp(parameter[1], "origin"))
4204                                                 shader->surfaceparms |= Q3SURFACEPARM_ORIGIN;
4205                                         else if (!strcasecmp(parameter[1], "playerclip"))
4206                                                 shader->surfaceparms |= Q3SURFACEPARM_PLAYERCLIP;
4207                                         else if (!strcasecmp(parameter[1], "sky"))
4208                                                 shader->surfaceparms |= Q3SURFACEPARM_SKY;
4209                                         else if (!strcasecmp(parameter[1], "slick"))
4210                                                 shader->surfaceparms |= Q3SURFACEPARM_SLICK;
4211                                         else if (!strcasecmp(parameter[1], "slime"))
4212                                                 shader->surfaceparms |= Q3SURFACEPARM_SLIME;
4213                                         else if (!strcasecmp(parameter[1], "structural"))
4214                                                 shader->surfaceparms |= Q3SURFACEPARM_STRUCTURAL;
4215                                         else if (!strcasecmp(parameter[1], "trans"))
4216                                                 shader->surfaceparms |= Q3SURFACEPARM_TRANS;
4217                                         else if (!strcasecmp(parameter[1], "water"))
4218                                                 shader->surfaceparms |= Q3SURFACEPARM_WATER;
4219                                         else if (!strcasecmp(parameter[1], "pointlight"))
4220                                                 shader->surfaceparms |= Q3SURFACEPARM_POINTLIGHT;
4221                                         else
4222                                                 Con_Printf("%s parsing warning: unknown surfaceparm \"%s\"\n", search->filenames[fileindex], parameter[1]);
4223                                 }
4224                                 else if (!strcasecmp(parameter[0], "sky") && numparameters >= 2)
4225                                 {
4226                                         // some q3 skies don't have the sky parm set
4227                                         shader->surfaceparms |= Q3SURFACEPARM_SKY;
4228                                         strlcpy(shader->skyboxname, parameter[1], sizeof(shader->skyboxname));
4229                                 }
4230                                 else if (!strcasecmp(parameter[0], "skyparms") && numparameters >= 2)
4231                                 {
4232                                         // some q3 skies don't have the sky parm set
4233                                         shader->surfaceparms |= Q3SURFACEPARM_SKY;
4234                                         if (!atoi(parameter[1]) && strcasecmp(parameter[1], "-"))
4235                                                 strlcpy(shader->skyboxname, parameter[1], sizeof(shader->skyboxname));
4236                                 }
4237                                 else if (!strcasecmp(parameter[0], "cull") && numparameters >= 2)
4238                                 {
4239                                         if (!strcasecmp(parameter[1], "disable") || !strcasecmp(parameter[1], "none") || !strcasecmp(parameter[1], "twosided"))
4240                                                 shader->textureflags |= Q3TEXTUREFLAG_TWOSIDED;
4241                                 }
4242                                 else if (!strcasecmp(parameter[0], "nomipmaps"))
4243                                         shader->surfaceparms |= Q3SURFACEPARM_NOMIPMAPS;
4244                                 else if (!strcasecmp(parameter[0], "nopicmip"))
4245                                         shader->textureflags |= Q3TEXTUREFLAG_NOPICMIP;
4246                                 else if (!strcasecmp(parameter[0], "deformvertexes") && numparameters >= 2)
4247                                 {
4248                                         if (!strcasecmp(parameter[1], "autosprite") && numparameters == 2)
4249                                                 shader->textureflags |= Q3TEXTUREFLAG_AUTOSPRITE;
4250                                         if (!strcasecmp(parameter[1], "autosprite2") && numparameters == 2)
4251                                                 shader->textureflags |= Q3TEXTUREFLAG_AUTOSPRITE2;
4252                                 }
4253                         }
4254                         // identify if this is a blended terrain shader or similar
4255                         if (shader->numlayers)
4256                         {
4257                                 shader->primarylayer = shader->layers + 0;
4258                                 if (shader->layers[1].blendfunc[0] == GL_SRC_ALPHA && shader->layers[1].blendfunc[1] == GL_ONE_MINUS_SRC_ALPHA)
4259                                 {
4260                                         // terrain blending or other effects
4261                                         shader->backgroundlayer = shader->layers + 0;
4262                                         shader->primarylayer = shader->layers + 1;
4263                                 }
4264                                 // now see if the lightmap came first, and if so choose the second texture instead
4265                                 if (!strcasecmp(shader->primarylayer->texturename, "$lightmap"))
4266                                         shader->primarylayer = shader->layers + 1;
4267                         }
4268                 }
4269                 Mem_Free(f);
4270         }
4271 }
4272
4273 q3shaderinfo_t *Mod_Q3BSP_LookupShader(const char *name)
4274 {
4275         int i;
4276         for (i = 0;i < Q3SHADER_MAXSHADERS;i++)
4277                 if (!strcasecmp(q3shaders_shaders[i].name, name))
4278                         return q3shaders_shaders + i;
4279         return NULL;
4280 }
4281
4282 static void Mod_Q3BSP_LoadTextures(lump_t *l)
4283 {
4284         q3dtexture_t *in;
4285         texture_t *out;
4286         int i, count, c;
4287
4288         in = (q3dtexture_t *)(mod_base + l->fileofs);
4289         if (l->filelen % sizeof(*in))
4290                 Host_Error("Mod_Q3BSP_LoadTextures: funny lump size in %s",loadmodel->name);
4291         count = l->filelen / sizeof(*in);
4292         out = (texture_t *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
4293
4294         loadmodel->data_textures = out;
4295         loadmodel->num_textures = count;
4296
4297         // parse the Q3 shader files
4298         Mod_Q3BSP_LoadShaders();
4299
4300         c = 0;
4301         for (i = 0;i < count;i++, in++, out++)
4302         {
4303                 q3shaderinfo_t *shader;
4304                 strlcpy (out->name, in->name, sizeof (out->name));
4305                 out->surfaceflags = LittleLong(in->surfaceflags);
4306                 out->supercontents = Mod_Q3BSP_SuperContentsFromNativeContents(loadmodel, LittleLong(in->contents));
4307                 shader = Mod_Q3BSP_LookupShader(out->name);
4308                 if (shader)
4309                 {
4310                         out->surfaceparms = shader->surfaceparms;
4311                         out->textureflags = shader->textureflags;
4312                         out->basematerialflags = 0;
4313                         if (shader->surfaceparms & Q3SURFACEPARM_SKY)
4314                         {
4315                                 out->basematerialflags |= MATERIALFLAG_SKY;
4316                                 if (shader->skyboxname[0])
4317                                 {
4318                                         // quake3 seems to append a _ to the skybox name, so this must do so as well
4319                                         dpsnprintf(loadmodel->brush.skybox, sizeof(loadmodel->brush.skybox), "%s_", shader->skyboxname);
4320                                 }
4321                         }
4322                         else if ((out->surfaceflags & Q3SURFACEFLAG_NODRAW) || shader->numlayers == 0)
4323                                 out->basematerialflags |= MATERIALFLAG_NODRAW;
4324                         else if (shader->surfaceparms & Q3SURFACEPARM_LAVA)
4325                                 out->basematerialflags |= MATERIALFLAG_WATER | MATERIALFLAG_FULLBRIGHT;
4326                         else if (shader->surfaceparms & Q3SURFACEPARM_SLIME)
4327                                 out->basematerialflags |= MATERIALFLAG_WATER | MATERIALFLAG_WATERALPHA;
4328                         else if (shader->surfaceparms & Q3SURFACEPARM_WATER)
4329                                 out->basematerialflags |= MATERIALFLAG_WATER | MATERIALFLAG_WATERALPHA;
4330                         else
4331                                 out->basematerialflags |= MATERIALFLAG_WALL;
4332                         if (shader->textureflags & Q3TEXTUREFLAG_ALPHATEST)
4333                                 out->basematerialflags |= MATERIALFLAG_ALPHATEST | MATERIALFLAG_TRANSPARENT;
4334                         out->customblendfunc[0] = GL_ONE;
4335                         out->customblendfunc[1] = GL_ZERO;
4336                         if (shader->numlayers > 0)
4337                         {
4338                                 out->customblendfunc[0] = shader->layers[0].blendfunc[0];
4339                                 out->customblendfunc[1] = shader->layers[0].blendfunc[1];
4340 /*
4341 Q3 shader blendfuncs actually used in the game (* = supported by DP)
4342 * additive               GL_ONE GL_ONE
4343   additive weird         GL_ONE GL_SRC_ALPHA
4344   additive weird 2       GL_ONE GL_ONE_MINUS_SRC_ALPHA
4345 * alpha                  GL_SRC_ALPHA GL_ONE_MINUS_SRC_ALPHA
4346   alpha inverse          GL_ONE_MINUS_SRC_ALPHA GL_SRC_ALPHA
4347   brighten               GL_DST_COLOR GL_ONE
4348   brighten               GL_ONE GL_SRC_COLOR
4349   brighten weird         GL_DST_COLOR GL_ONE_MINUS_DST_ALPHA
4350   brighten weird 2       GL_DST_COLOR GL_SRC_ALPHA
4351 * modulate               GL_DST_COLOR GL_ZERO
4352 * modulate               GL_ZERO GL_SRC_COLOR
4353   modulate inverse       GL_ZERO GL_ONE_MINUS_SRC_COLOR
4354   modulate inverse alpha GL_ZERO GL_SRC_ALPHA
4355   modulate weird inverse GL_ONE_MINUS_DST_COLOR GL_ZERO
4356 * modulate x2            GL_DST_COLOR GL_SRC_COLOR
4357 * no blend               GL_ONE GL_ZERO
4358   nothing                GL_ZERO GL_ONE
4359 */
4360                                 // if not opaque, figure out what blendfunc to use
4361                                 if (shader->layers[0].blendfunc[0] != GL_ONE || shader->layers[0].blendfunc[1] != GL_ZERO)
4362                                 {
4363                                         if (shader->layers[0].blendfunc[0] == GL_ONE && shader->layers[0].blendfunc[1] == GL_ONE)
4364                                                 out->basematerialflags |= MATERIALFLAG_ADD | MATERIALFLAG_BLENDED | MATERIALFLAG_TRANSPARENT;
4365                                         else if (shader->layers[0].blendfunc[0] == GL_SRC_ALPHA && shader->layers[0].blendfunc[1] == GL_ONE)
4366                                                 out->basematerialflags |= MATERIALFLAG_ADD | MATERIALFLAG_BLENDED | MATERIALFLAG_TRANSPARENT;
4367                                         else if (shader->layers[0].blendfunc[0] == GL_SRC_ALPHA && shader->layers[0].blendfunc[1] == GL_ONE_MINUS_SRC_ALPHA)
4368                                                 out->basematerialflags |= MATERIALFLAG_ALPHA | MATERIALFLAG_BLENDED | MATERIALFLAG_TRANSPARENT;
4369                                         else
4370                                                 out->basematerialflags |= MATERIALFLAG_CUSTOMBLEND | MATERIALFLAG_FULLBRIGHT | MATERIALFLAG_BLENDED | MATERIALFLAG_TRANSPARENT;
4371                                 }
4372                         }
4373                         if (!shader->lighting)
4374                                 out->basematerialflags |= MATERIALFLAG_FULLBRIGHT;
4375                         if (cls.state != ca_dedicated)
4376                                 if (shader->primarylayer && !Mod_LoadSkinFrame(&out->skin, shader->primarylayer->texturename, ((shader->surfaceparms & Q3SURFACEPARM_NOMIPMAPS) ? 0 : TEXF_MIPMAP) | TEXF_ALPHA | TEXF_PRECACHE | (shader->textureflags & Q3TEXTUREFLAG_NOPICMIP ? 0 : TEXF_PICMIP), false, true))
4377                                         Con_Printf("%s: could not load texture \"%s\" for shader \"%s\"\n", loadmodel->name, shader->primarylayer->texturename, out->name);
4378                 }
4379                 else
4380                 {
4381                         c++;
4382                         Con_DPrintf("%s: No shader found for texture \"%s\"\n", loadmodel->name, out->name);
4383                         out->surfaceparms = 0;
4384                         if (out->surfaceflags & Q3SURFACEFLAG_NODRAW)
4385                                 out->basematerialflags |= MATERIALFLAG_NODRAW;
4386                         else if (out->surfaceflags & Q3SURFACEFLAG_SKY)
4387                                 out->basematerialflags |= MATERIALFLAG_SKY;
4388                         else
4389                                 out->basematerialflags |= MATERIALFLAG_WALL;
4390                         // these are defaults
4391                         //if (!strncmp(out->name, "textures/skies/", 15))
4392                         //      out->surfaceparms |= Q3SURFACEPARM_SKY;
4393                         //if (!strcmp(out->name, "caulk") || !strcmp(out->name, "common/caulk") || !strcmp(out->name, "textures/common/caulk")
4394                         // || !strcmp(out->name, "nodraw") || !strcmp(out->name, "common/nodraw") || !strcmp(out->name, "textures/common/nodraw"))
4395                         //      out->surfaceparms |= Q3SURFACEPARM_NODRAW;
4396                         //if (R_TextureHasAlpha(out->skin.base))
4397                         //      out->surfaceparms |= Q3SURFACEPARM_TRANS;
4398                         if (cls.state != ca_dedicated)
4399                                 if (!Mod_LoadSkinFrame(&out->skin, out->name, TEXF_MIPMAP | TEXF_ALPHA | TEXF_PRECACHE | TEXF_PICMIP, false, true))
4400                                         Con_Printf("%s: could not load texture for missing shader \"%s\"\n", loadmodel->name, out->name);
4401                 }
4402                 // no animation
4403                 out->currentframe = out;
4404         }
4405         if (c)
4406                 Con_DPrintf("%s: %i textures missing shaders\n", loadmodel->name, c);
4407 }
4408
4409 static void Mod_Q3BSP_LoadPlanes(lump_t *l)
4410 {
4411         q3dplane_t *in;
4412         mplane_t *out;
4413         int i, count;
4414
4415         in = (q3dplane_t *)(mod_base + l->fileofs);
4416         if (l->filelen % sizeof(*in))
4417                 Host_Error("Mod_Q3BSP_LoadPlanes: funny lump size in %s",loadmodel->name);
4418         count = l->filelen / sizeof(*in);
4419         out = (mplane_t *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
4420
4421         loadmodel->brush.data_planes = out;
4422         loadmodel->brush.num_planes = count;
4423
4424         for (i = 0;i < count;i++, in++, out++)
4425         {
4426                 out->normal[0] = LittleFloat(in->normal[0]);
4427                 out->normal[1] = LittleFloat(in->normal[1]);
4428                 out->normal[2] = LittleFloat(in->normal[2]);
4429                 out->dist = LittleFloat(in->dist);
4430                 PlaneClassify(out);
4431         }
4432 }
4433
4434 static void Mod_Q3BSP_LoadBrushSides(lump_t *l)
4435 {
4436         q3dbrushside_t *in;
4437         q3mbrushside_t *out;
4438         int i, n, count;
4439
4440         in = (q3dbrushside_t *)(mod_base + l->fileofs);
4441         if (l->filelen % sizeof(*in))
4442                 Host_Error("Mod_Q3BSP_LoadBrushSides: funny lump size in %s",loadmodel->name);
4443         count = l->filelen / sizeof(*in);
4444         out = (q3mbrushside_t *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
4445
4446         loadmodel->brush.data_brushsides = out;
4447         loadmodel->brush.num_brushsides = count;
4448
4449         for (i = 0;i < count;i++, in++, out++)
4450         {
4451                 n = LittleLong(in->planeindex);
4452                 if (n < 0 || n >= loadmodel->brush.num_planes)
4453                         Host_Error("Mod_Q3BSP_LoadBrushSides: invalid planeindex %i (%i planes)", n, loadmodel->brush.num_planes);
4454                 out->plane = loadmodel->brush.data_planes + n;
4455                 n = LittleLong(in->textureindex);
4456                 if (n < 0 || n >= loadmodel->num_textures)
4457                         Host_Error("Mod_Q3BSP_LoadBrushSides: invalid textureindex %i (%i textures)", n, loadmodel->num_textures);
4458                 out->texture = loadmodel->data_textures + n;
4459         }
4460 }
4461
4462 static void Mod_Q3BSP_LoadBrushes(lump_t *l)
4463 {
4464         q3dbrush_t *in;
4465         q3mbrush_t *out;
4466         int i, j, n, c, count, maxplanes;
4467         colplanef_t *planes;
4468
4469         in = (q3dbrush_t *)(mod_base + l->fileofs);
4470         if (l->filelen % sizeof(*in))
4471                 Host_Error("Mod_Q3BSP_LoadBrushes: funny lump size in %s",loadmodel->name);
4472         count = l->filelen / sizeof(*in);
4473         out = (q3mbrush_t *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
4474
4475         loadmodel->brush.data_brushes = out;
4476         loadmodel->brush.num_brushes = count;
4477
4478         maxplanes = 0;
4479         planes = NULL;
4480
4481         for (i = 0;i < count;i++, in++, out++)
4482         {
4483                 n = LittleLong(in->firstbrushside);
4484                 c = LittleLong(in->numbrushsides);
4485                 if (n < 0 || n + c > loadmodel->brush.num_brushsides)
4486                         Host_Error("Mod_Q3BSP_LoadBrushes: invalid brushside range %i : %i (%i brushsides)", n, n + c, loadmodel->brush.num_brushsides);
4487                 out->firstbrushside = loadmodel->brush.data_brushsides + n;
4488                 out->numbrushsides = c;
4489                 n = LittleLong(in->textureindex);
4490                 if (n < 0 || n >= loadmodel->num_textures)
4491                         Host_Error("Mod_Q3BSP_LoadBrushes: invalid textureindex %i (%i textures)", n, loadmodel->num_textures);
4492                 out->texture = loadmodel->data_textures + n;
4493
4494                 // make a list of mplane_t structs to construct a colbrush from
4495                 if (maxplanes < out->numbrushsides)
4496                 {
4497                         maxplanes = out->numbrushsides;
4498                         if (planes)
4499                                 Mem_Free(planes);
4500                         planes = (colplanef_t *)Mem_Alloc(tempmempool, sizeof(colplanef_t) * maxplanes);
4501                 }
4502                 for (j = 0;j < out->numbrushsides;j++)
4503                 {
4504                         VectorCopy(out->firstbrushside[j].plane->normal, planes[j].normal);
4505                         planes[j].dist = out->firstbrushside[j].plane->dist;
4506                         planes[j].q3surfaceflags = out->firstbrushside[j].texture->surfaceflags;
4507                         planes[j].texture = out->firstbrushside[j].texture;
4508                 }
4509                 // make the colbrush from the planes
4510                 out->colbrushf = Collision_NewBrushFromPlanes(loadmodel->mempool, out->numbrushsides, planes, out->texture->supercontents);
4511         }
4512         if (planes)
4513                 Mem_Free(planes);
4514 }
4515
4516 static void Mod_Q3BSP_LoadEffects(lump_t *l)
4517 {
4518         q3deffect_t *in;
4519         q3deffect_t *out;
4520         int i, n, count;
4521
4522         in = (q3deffect_t *)(mod_base + l->fileofs);
4523         if (l->filelen % sizeof(*in))
4524                 Host_Error("Mod_Q3BSP_LoadEffects: funny lump size in %s",loadmodel->name);
4525         count = l->filelen / sizeof(*in);
4526         out = (q3deffect_t *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
4527
4528         loadmodel->brushq3.data_effects = out;
4529         loadmodel->brushq3.num_effects = count;
4530
4531         for (i = 0;i < count;i++, in++, out++)
4532         {
4533                 strlcpy (out->shadername, in->shadername, sizeof (out->shadername));
4534                 n = LittleLong(in->brushindex);
4535                 if (n >= loadmodel->brush.num_brushes)
4536                 {
4537                         Con_Printf("Mod_Q3BSP_LoadEffects: invalid brushindex %i (%i brushes), setting to -1\n", n, loadmodel->brush.num_brushes);
4538                         n = -1;
4539                 }
4540                 out->brushindex = n;
4541                 out->unknown = LittleLong(in->unknown);
4542         }
4543 }
4544
4545 static void Mod_Q3BSP_LoadVertices(lump_t *l)
4546 {
4547         q3dvertex_t *in;
4548         int i, count;
4549
4550         in = (q3dvertex_t *)(mod_base + l->fileofs);
4551         if (l->filelen % sizeof(*in))
4552                 Host_Error("Mod_Q3BSP_LoadVertices: funny lump size in %s",loadmodel->name);
4553         loadmodel->brushq3.num_vertices = count = l->filelen / sizeof(*in);
4554         loadmodel->brushq3.data_vertex3f = (float *)Mem_Alloc(loadmodel->mempool, count * (sizeof(float) * (3 + 3 + 2 + 2 + 4)));
4555         loadmodel->brushq3.data_normal3f = loadmodel->brushq3.data_vertex3f + count * 3;
4556         loadmodel->brushq3.data_texcoordtexture2f = loadmodel->brushq3.data_normal3f + count * 3;
4557         loadmodel->brushq3.data_texcoordlightmap2f = loadmodel->brushq3.data_texcoordtexture2f + count * 2;
4558         loadmodel->brushq3.data_color4f = loadmodel->brushq3.data_texcoordlightmap2f + count * 2;
4559
4560         for (i = 0;i < count;i++, in++)
4561         {
4562                 loadmodel->brushq3.data_vertex3f[i * 3 + 0] = LittleFloat(in->origin3f[0]);
4563                 loadmodel->brushq3.data_vertex3f[i * 3 + 1] = LittleFloat(in->origin3f[1]);
4564                 loadmodel->brushq3.data_vertex3f[i * 3 + 2] = LittleFloat(in->origin3f[2]);
4565                 loadmodel->brushq3.data_normal3f[i * 3 + 0] = LittleFloat(in->normal3f[0]);
4566                 loadmodel->brushq3.data_normal3f[i * 3 + 1] = LittleFloat(in->normal3f[1]);
4567                 loadmodel->brushq3.data_normal3f[i * 3 + 2] = LittleFloat(in->normal3f[2]);
4568                 loadmodel->brushq3.data_texcoordtexture2f[i * 2 + 0] = LittleFloat(in->texcoord2f[0]);
4569                 loadmodel->brushq3.data_texcoordtexture2f[i * 2 + 1] = LittleFloat(in->texcoord2f[1]);
4570                 loadmodel->brushq3.data_texcoordlightmap2f[i * 2 + 0] = LittleFloat(in->lightmap2f[0]);
4571                 loadmodel->brushq3.data_texcoordlightmap2f[i * 2 + 1] = LittleFloat(in->lightmap2f[1]);
4572                 // svector/tvector are calculated later in face loading
4573                 loadmodel->brushq3.data_color4f[i * 4 + 0] = in->color4ub[0] * (1.0f / 255.0f);
4574                 loadmodel->brushq3.data_color4f[i * 4 + 1] = in->color4ub[1] * (1.0f / 255.0f);
4575                 loadmodel->brushq3.data_color4f[i * 4 + 2] = in->color4ub[2] * (1.0f / 255.0f);
4576                 loadmodel->brushq3.data_color4f[i * 4 + 3] = in->color4ub[3] * (1.0f / 255.0f);
4577         }
4578 }
4579
4580 static void Mod_Q3BSP_LoadTriangles(lump_t *l)
4581 {
4582         int *in;
4583         int *out;
4584         int i, count;
4585
4586         in = (int *)(mod_base + l->fileofs);
4587         if (l->filelen % sizeof(int[3]))
4588                 Host_Error("Mod_Q3BSP_LoadTriangles: funny lump size in %s",loadmodel->name);
4589         count = l->filelen / sizeof(*in);
4590         out = (int *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
4591
4592         loadmodel->brushq3.num_triangles = count / 3;
4593         loadmodel->brushq3.data_element3i = out;
4594
4595         for (i = 0;i < count;i++, in++, out++)
4596         {
4597                 *out = LittleLong(*in);
4598                 if (*out < 0 || *out >= loadmodel->brushq3.num_vertices)
4599                 {
4600                         Con_Printf("Mod_Q3BSP_LoadTriangles: invalid vertexindex %i (%i vertices), setting to 0\n", *out, loadmodel->brushq3.num_vertices);
4601                         *out = 0;
4602                 }
4603         }
4604 }
4605
4606 static void Mod_Q3BSP_LoadLightmaps(lump_t *l)
4607 {
4608         q3dlightmap_t *in;
4609         rtexture_t **out;
4610         int i, count;
4611         unsigned char *c;
4612
4613         if (!l->filelen)
4614                 return;
4615         in = (q3dlightmap_t *)(mod_base + l->fileofs);
4616         if (l->filelen % sizeof(*in))
4617                 Host_Error("Mod_Q3BSP_LoadLightmaps: funny lump size in %s",loadmodel->name);
4618         count = l->filelen / sizeof(*in);
4619         out = (rtexture_t **)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
4620
4621         loadmodel->brushq3.data_lightmaps = out;
4622         loadmodel->brushq3.num_lightmaps = count;
4623
4624         // deluxemapped q3bsp files have an even number of lightmaps, and surfaces
4625         // always index even numbered ones (0, 2, 4, ...), the odd numbered
4626         // lightmaps are the deluxemaps (light direction textures), so if we
4627         // encounter any odd numbered lightmaps it is not a deluxemapped bsp, it
4628         // is also not a deluxemapped bsp if it has an odd number of lightmaps or
4629         // less than 2
4630         loadmodel->brushq3.deluxemapping = true;
4631         loadmodel->brushq3.deluxemapping_modelspace = true;
4632         if (count < 2 || (count & 1))
4633                 loadmodel->brushq3.deluxemapping = false;
4634
4635         // q3map2 sometimes (or always?) makes a second blank lightmap for no
4636         // reason when only one lightmap is used, which can throw off the
4637         // deluxemapping detection method, so check 2-lightmap bsp's specifically
4638         // to see if the second lightmap is blank, if so it is not deluxemapped.
4639         if (count == 2)
4640         {
4641                 c = in[count - 1].rgb;
4642                 for (i = 0;i < 128*128*3;i++)
4643                         if (c[i])
4644                                 break;
4645                 if (i == 128*128*3)
4646                 {
4647                         // all pixels in the unused lightmap were black...
4648                         loadmodel->brushq3.deluxemapping = false;
4649                 }
4650         }
4651
4652         // further deluxemapping detection is done in Mod_Q3BSP_LoadFaces
4653
4654         for (i = 0;i < count;i++, in++, out++)
4655                 *out = R_LoadTexture2D(loadmodel->texturepool, va("lightmap%04i", i), 128, 128, in->rgb, TEXTYPE_RGB, TEXF_FORCELINEAR | TEXF_PRECACHE, NULL);
4656 }
4657
4658 static void Mod_Q3BSP_LoadFaces(lump_t *l)
4659 {
4660         q3dface_t *in, *oldin;
4661         msurface_t *out, *oldout;
4662         int i, oldi, j, n, count, invalidelements, patchsize[2], finalwidth, finalheight, xtess, ytess, finalvertices, finaltriangles, firstvertex, firstelement, type, oldnumtriangles, oldnumtriangles2, meshvertices, meshtriangles, numvertices, numtriangles;
4663         //int *originalelement3i;
4664         //int *originalneighbor3i;
4665         float *originalvertex3f;
4666         //float *originalsvector3f;
4667         //float *originaltvector3f;
4668         float *originalnormal3f;
4669         float *originalcolor4f;
4670         float *originaltexcoordtexture2f;
4671         float *originaltexcoordlightmap2f;
4672         float *v;
4673
4674         in = (q3dface_t *)(mod_base + l->fileofs);
4675         if (l->filelen % sizeof(*in))
4676                 Host_Error("Mod_Q3BSP_LoadFaces: funny lump size in %s",loadmodel->name);
4677         count = l->filelen / sizeof(*in);
4678         out = (msurface_t *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
4679
4680         loadmodel->data_surfaces = out;
4681         loadmodel->num_surfaces = count;
4682
4683         // 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
4684         if (loadmodel->brushq3.deluxemapping)
4685         {
4686                 for (i = 0;i < count;i++)
4687                 {
4688                         n = LittleLong(in[i].lightmapindex);
4689                         if (n >= 0 && ((n & 1) || n + 1 >= loadmodel->brushq3.num_lightmaps))
4690                         {
4691                                 loadmodel->brushq3.deluxemapping = false;
4692                                 break;
4693                         }
4694                 }
4695         }
4696         Con_DPrintf("%s is %sdeluxemapped\n", loadmodel->name, loadmodel->brushq3.deluxemapping ? "" : "not ");
4697
4698         i = 0;
4699         oldi = i;
4700         oldin = in;
4701         oldout = out;
4702         meshvertices = 0;
4703         meshtriangles = 0;
4704         for (;i < count;i++, in++, out++)
4705         {
4706                 // check face type first
4707                 type = LittleLong(in->type);
4708                 if (type != Q3FACETYPE_POLYGON
4709                  && type != Q3FACETYPE_PATCH
4710                  && type != Q3FACETYPE_MESH
4711                  && type != Q3FACETYPE_FLARE)
4712                 {
4713                         Con_DPrintf("Mod_Q3BSP_LoadFaces: face #%i: unknown face type %i\n", i, type);
4714                         continue;
4715                 }
4716
4717                 n = LittleLong(in->textureindex);
4718                 if (n < 0 || n >= loadmodel->num_textures)
4719                 {
4720                         Con_DPrintf("Mod_Q3BSP_LoadFaces: face #%i: invalid textureindex %i (%i textures)\n", i, n, loadmodel->num_textures);
4721                         continue;
4722                 }
4723                 out->texture = loadmodel->data_textures + n;
4724                 n = LittleLong(in->effectindex);
4725                 if (n < -1 || n >= loadmodel->brushq3.num_effects)
4726                 {
4727                         if (developer.integer >= 100)
4728                                 Con_Printf("Mod_Q3BSP_LoadFaces: face #%i (texture \"%s\"): invalid effectindex %i (%i effects)\n", i, out->texture->name, n, loadmodel->brushq3.num_effects);
4729                         n = -1;
4730                 }
4731                 if (n == -1)
4732                         out->effect = NULL;
4733                 else
4734                         out->effect = loadmodel->brushq3.data_effects + n;
4735                 n = LittleLong(in->lightmapindex);
4736                 if (n >= loadmodel->brushq3.num_lightmaps)
4737                 {
4738                         Con_Printf("Mod_Q3BSP_LoadFaces: face #%i (texture \"%s\"): invalid lightmapindex %i (%i lightmaps)\n", i, out->texture->name, n, loadmodel->brushq3.num_lightmaps);
4739                         n = -1;
4740                 }
4741                 else if (n < 0)
4742                         n = -1;
4743                 if (n == -1)
4744                 {
4745                         out->lightmaptexture = NULL;
4746                         out->deluxemaptexture = r_texture_blanknormalmap;
4747                 }
4748                 else
4749                 {
4750                         out->lightmaptexture = loadmodel->brushq3.data_lightmaps[n];
4751                         if (loadmodel->brushq3.deluxemapping)
4752                                 out->deluxemaptexture = loadmodel->brushq3.data_lightmaps[n+1];
4753                         else
4754                                 out->deluxemaptexture = r_texture_blanknormalmap;
4755                 }
4756
4757                 firstvertex = LittleLong(in->firstvertex);
4758                 numvertices = LittleLong(in->numvertices);
4759                 firstelement = LittleLong(in->firstelement);
4760                 numtriangles = LittleLong(in->numelements) / 3;
4761                 if (numtriangles * 3 != LittleLong(in->numelements))
4762                 {
4763                         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));
4764                         continue;
4765                 }
4766                 if (firstvertex < 0 || firstvertex + numvertices > loadmodel->brushq3.num_vertices)
4767                 {
4768                         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);
4769                         continue;
4770                 }
4771                 if (firstelement < 0 || firstelement + numtriangles * 3 > loadmodel->brushq3.num_triangles * 3)
4772                 {
4773                         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);
4774                         continue;
4775                 }
4776                 switch(type)
4777                 {
4778                 case Q3FACETYPE_POLYGON:
4779                 case Q3FACETYPE_MESH:
4780                         // no processing necessary
4781                         break;
4782                 case Q3FACETYPE_PATCH:
4783                         patchsize[0] = LittleLong(in->specific.patch.patchsize[0]);
4784                         patchsize[1] = LittleLong(in->specific.patch.patchsize[1]);
4785                         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))
4786                         {
4787                                 Con_Printf("Mod_Q3BSP_LoadFaces: face #%i (texture \"%s\"): invalid patchsize %ix%i\n", i, out->texture->name, patchsize[0], patchsize[1]);
4788                                 continue;
4789                         }
4790                         originalvertex3f = loadmodel->brushq3.data_vertex3f + firstvertex * 3;
4791                         // convert patch to Q3FACETYPE_MESH
4792                         xtess = Q3PatchTesselationOnX(patchsize[0], patchsize[1], 3, originalvertex3f, r_subdivisions_tolerance.value);
4793                         ytess = Q3PatchTesselationOnY(patchsize[0], patchsize[1], 3, originalvertex3f, r_subdivisions_tolerance.value);
4794                         // bound to user settings
4795                         xtess = bound(r_subdivisions_mintess.integer, xtess, r_subdivisions_maxtess.integer);
4796                         ytess = bound(r_subdivisions_mintess.integer, ytess, r_subdivisions_maxtess.integer);
4797                         // bound to sanity settings
4798                         xtess = bound(1, xtess, 1024);
4799                         ytess = bound(1, ytess, 1024);
4800                         // bound to user limit on vertices
4801                         while ((xtess > 1 || ytess > 1) && (((patchsize[0] - 1) * xtess) + 1) * (((patchsize[1] - 1) * ytess) + 1) > min(r_subdivisions_maxvertices.integer, 262144))
4802                         {
4803                                 if (xtess > ytess)
4804                                         xtess--;
4805                                 else
4806                                         ytess--;
4807                         }
4808                         finalwidth = ((patchsize[0] - 1) * xtess) + 1;
4809                         finalheight = ((patchsize[1] - 1) * ytess) + 1;
4810                         numvertices = finalwidth * finalheight;
4811                         numtriangles = (finalwidth - 1) * (finalheight - 1) * 2;
4812                         break;
4813                 case Q3FACETYPE_FLARE:
4814                         if (developer.integer >= 100)
4815                                 Con_Printf("Mod_Q3BSP_LoadFaces: face #%i (texture \"%s\"): Q3FACETYPE_FLARE not supported (yet)\n", i, out->texture->name);
4816                         // don't render it
4817                         continue;
4818                 }
4819                 out->num_vertices = numvertices;
4820                 out->num_triangles = numtriangles;
4821                 meshvertices += out->num_vertices;
4822                 meshtriangles += out->num_triangles;
4823         }
4824
4825         i = oldi;
4826         in = oldin;
4827         out = oldout;
4828         Mod_AllocSurfMesh(loadmodel->mempool, meshvertices, meshtriangles, false, true, false);
4829         meshvertices = 0;
4830         meshtriangles = 0;
4831         for (;i < count && meshvertices + out->num_vertices <= loadmodel->surfmesh.num_vertices;i++, in++, out++)
4832         {
4833                 if (out->num_vertices < 3 || out->num_triangles < 1)
4834                         continue;
4835
4836                 type = LittleLong(in->type);
4837                 firstvertex = LittleLong(in->firstvertex);
4838                 firstelement = LittleLong(in->firstelement);
4839                 out->num_firstvertex = meshvertices;
4840                 out->num_firsttriangle = meshtriangles;
4841                 switch(type)
4842                 {
4843                 case Q3FACETYPE_POLYGON:
4844                 case Q3FACETYPE_MESH:
4845                         // no processing necessary
4846                         for (j = 0;j < out->num_vertices;j++)
4847                         {
4848                                 (loadmodel->surfmesh.data_vertex3f + 3 * out->num_firstvertex)[j * 3 + 0] = loadmodel->brushq3.data_vertex3f[(firstvertex + j) * 3 + 0];
4849                                 (loadmodel->surfmesh.data_vertex3f + 3 * out->num_firstvertex)[j * 3 + 1] = loadmodel->brushq3.data_vertex3f[(firstvertex + j) * 3 + 1];
4850                                 (loadmodel->surfmesh.data_vertex3f + 3 * out->num_firstvertex)[j * 3 + 2] = loadmodel->brushq3.data_vertex3f[(firstvertex + j) * 3 + 2];
4851                                 (loadmodel->surfmesh.data_normal3f + 3 * out->num_firstvertex)[j * 3 + 0] = loadmodel->brushq3.data_normal3f[(firstvertex + j) * 3 + 0];
4852                                 (loadmodel->surfmesh.data_normal3f + 3 * out->num_firstvertex)[j * 3 + 1] = loadmodel->brushq3.data_normal3f[(firstvertex + j) * 3 + 1];
4853                                 (loadmodel->surfmesh.data_normal3f + 3 * out->num_firstvertex)[j * 3 + 2] = loadmodel->brushq3.data_normal3f[(firstvertex + j) * 3 + 2];
4854                                 (loadmodel->surfmesh.data_texcoordtexture2f + 2 * out->num_firstvertex)[j * 2 + 0] = loadmodel->brushq3.data_texcoordtexture2f[(firstvertex + j) * 2 + 0];
4855                                 (loadmodel->surfmesh.data_texcoordtexture2f + 2 * out->num_firstvertex)[j * 2 + 1] = loadmodel->brushq3.data_texcoordtexture2f[(firstvertex + j) * 2 + 1];
4856                                 (loadmodel->surfmesh.data_texcoordlightmap2f + 2 * out->num_firstvertex)[j * 2 + 0] = loadmodel->brushq3.data_texcoordlightmap2f[(firstvertex + j) * 2 + 0];
4857                                 (loadmodel->surfmesh.data_texcoordlightmap2f + 2 * out->num_firstvertex)[j * 2 + 1] = loadmodel->brushq3.data_texcoordlightmap2f[(firstvertex + j) * 2 + 1];
4858                                 (loadmodel->surfmesh.data_lightmapcolor4f + 4 * out->num_firstvertex)[j * 4 + 0] = loadmodel->brushq3.data_color4f[(firstvertex + j) * 4 + 0];
4859                                 (loadmodel->surfmesh.data_lightmapcolor4f + 4 * out->num_firstvertex)[j * 4 + 1] = loadmodel->brushq3.data_color4f[(firstvertex + j) * 4 + 1];
4860                                 (loadmodel->surfmesh.data_lightmapcolor4f + 4 * out->num_firstvertex)[j * 4 + 2] = loadmodel->brushq3.data_color4f[(firstvertex + j) * 4 + 2];
4861                                 (loadmodel->surfmesh.data_lightmapcolor4f + 4 * out->num_firstvertex)[j * 4 + 3] = loadmodel->brushq3.data_color4f[(firstvertex + j) * 4 + 3];
4862                         }
4863                         for (j = 0;j < out->num_triangles*3;j++)
4864                                 (loadmodel->surfmesh.data_element3i + 3 * out->num_firsttriangle)[j] = loadmodel->brushq3.data_element3i[firstelement + j] + out->num_firstvertex;
4865                         break;
4866                 case Q3FACETYPE_PATCH:
4867                         patchsize[0] = LittleLong(in->specific.patch.patchsize[0]);
4868                         patchsize[1] = LittleLong(in->specific.patch.patchsize[1]);
4869                         originalvertex3f = loadmodel->brushq3.data_vertex3f + firstvertex * 3;
4870                         originalnormal3f = loadmodel->brushq3.data_normal3f + firstvertex * 3;
4871                         originaltexcoordtexture2f = loadmodel->brushq3.data_texcoordtexture2f + firstvertex * 2;
4872                         originaltexcoordlightmap2f = loadmodel->brushq3.data_texcoordlightmap2f + firstvertex * 2;
4873                         originalcolor4f = loadmodel->brushq3.data_color4f + firstvertex * 4;
4874                         // convert patch to Q3FACETYPE_MESH
4875                         xtess = Q3PatchTesselationOnX(patchsize[0], patchsize[1], 3, originalvertex3f, r_subdivisions_tolerance.value);
4876                         ytess = Q3PatchTesselationOnY(patchsize[0], patchsize[1], 3, originalvertex3f, r_subdivisions_tolerance.value);
4877                         // bound to user settings
4878                         xtess = bound(r_subdivisions_mintess.integer, xtess, r_subdivisions_maxtess.integer);
4879                         ytess = bound(r_subdivisions_mintess.integer, ytess, r_subdivisions_maxtess.integer);
4880                         // bound to sanity settings
4881                         xtess = bound(1, xtess, 1024);
4882                         ytess = bound(1, ytess, 1024);
4883                         // bound to user limit on vertices
4884                         while ((xtess > 1 || ytess > 1) && (((patchsize[0] - 1) * xtess) + 1) * (((patchsize[1] - 1) * ytess) + 1) > min(r_subdivisions_maxvertices.integer, 262144))
4885                         {
4886                                 if (xtess > ytess)
4887                                         xtess--;
4888                                 else
4889                                         ytess--;
4890                         }
4891                         finalwidth = ((patchsize[0] - 1) * xtess) + 1;
4892                         finalheight = ((patchsize[1] - 1) * ytess) + 1;
4893                         finalvertices = finalwidth * finalheight;
4894                         finaltriangles = (finalwidth - 1) * (finalheight - 1) * 2;
4895                         type = Q3FACETYPE_MESH;
4896                         // generate geometry
4897                         // (note: normals are skipped because they get recalculated)
4898                         Q3PatchTesselateFloat(3, sizeof(float[3]), (loadmodel->surfmesh.data_vertex3f + 3 * out->num_firstvertex), patchsize[0], patchsize[1], sizeof(float[3]), originalvertex3f, xtess, ytess);
4899                         Q3PatchTesselateFloat(3, sizeof(float[3]), (loadmodel->surfmesh.data_normal3f + 3 * out->num_firstvertex), patchsize[0], patchsize[1], sizeof(float[3]), originalnormal3f, xtess, ytess);
4900                         Q3PatchTesselateFloat(2, sizeof(float[2]), (loadmodel->surfmesh.data_texcoordtexture2f + 2 * out->num_firstvertex), patchsize[0], patchsize[1], sizeof(float[2]), originaltexcoordtexture2f, xtess, ytess);
4901                         Q3PatchTesselateFloat(2, sizeof(float[2]), (loadmodel->surfmesh.data_texcoordlightmap2f + 2 * out->num_firstvertex), patchsize[0], patchsize[1], sizeof(float[2]), originaltexcoordlightmap2f, xtess, ytess);
4902                         Q3PatchTesselateFloat(4, sizeof(float[4]), (loadmodel->surfmesh.data_lightmapcolor4f + 4 * out->num_firstvertex), patchsize[0], patchsize[1], sizeof(float[4]), originalcolor4f, xtess, ytess);
4903                         Q3PatchTriangleElements((loadmodel->surfmesh.data_element3i + 3 * out->num_firsttriangle), finalwidth, finalheight, out->num_firstvertex);
4904                         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);
4905                         if (developer.integer >= 100)
4906                         {
4907                                 if (out->num_triangles < finaltriangles)
4908                                         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);
4909                                 else
4910                                         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);
4911                         }
4912                         // q3map does not put in collision brushes for curves... ugh
4913                         // build the lower quality collision geometry
4914                         xtess = Q3PatchTesselationOnX(patchsize[0], patchsize[1], 3, originalvertex3f, r_subdivisions_collision_tolerance.value);
4915                         ytess = Q3PatchTesselationOnY(patchsize[0], patchsize[1], 3, originalvertex3f, r_subdivisions_collision_tolerance.value);
4916                         // bound to user settings
4917                         xtess = bound(r_subdivisions_collision_mintess.integer, xtess, r_subdivisions_collision_maxtess.integer);
4918                         ytess = bound(r_subdivisions_collision_mintess.integer, ytess, r_subdivisions_collision_maxtess.integer);
4919                         // bound to sanity settings
4920                         xtess = bound(1, xtess, 1024);
4921                         ytess = bound(1, ytess, 1024);
4922                         // bound to user limit on vertices
4923                         while ((xtess > 1 || ytess > 1) && (((patchsize[0] - 1) * xtess) + 1) * (((patchsize[1] - 1) * ytess) + 1) > min(r_subdivisions_collision_maxvertices.integer, 262144))
4924                         {
4925                                 if (xtess > ytess)
4926                                         xtess--;
4927                                 else
4928                                         ytess--;
4929                         }
4930                         finalwidth = ((patchsize[0] - 1) * xtess) + 1;
4931                         finalheight = ((patchsize[1] - 1) * ytess) + 1;
4932                         finalvertices = finalwidth * finalheight;
4933                         finaltriangles = (finalwidth - 1) * (finalheight - 1) * 2;
4934
4935                         out->data_collisionvertex3f = (float *)Mem_Alloc(loadmodel->mempool, sizeof(float[3]) * finalvertices);
4936                         out->data_collisionelement3i = (int *)Mem_Alloc(loadmodel->mempool, sizeof(int[3]) * finaltriangles);
4937                         out->num_collisionvertices = finalvertices;
4938                         out->num_collisiontriangles = finaltriangles;
4939                         Q3PatchTesselateFloat(3, sizeof(float[3]), out->data_collisionvertex3f, patchsize[0], patchsize[1], sizeof(float[3]), originalvertex3f, xtess, ytess);
4940                         Q3PatchTriangleElements(out->data_collisionelement3i, finalwidth, finalheight, 0);
4941
4942                         //Mod_SnapVertices(3, out->num_vertices, (loadmodel->surfmesh.data_vertex3f + 3 * out->num_firstvertex), 0.25);
4943                         Mod_SnapVertices(3, out->num_collisionvertices, out->data_collisionvertex3f, 1);
4944
4945                         oldnumtriangles = out->num_triangles;
4946                         oldnumtriangles2 = out->num_collisiontriangles;
4947                         out->num_collisiontriangles = Mod_RemoveDegenerateTriangles(out->num_collisiontriangles, out->data_collisionelement3i, out->data_collisionelement3i, out->data_collisionvertex3f);
4948                         if (developer.integer >= 100)
4949                                 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);
4950                         break;
4951                 default:
4952                         break;
4953                 }
4954                 meshvertices += out->num_vertices;
4955                 meshtriangles += out->num_triangles;
4956                 for (j = 0, invalidelements = 0;j < out->num_triangles * 3;j++)
4957                         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)
4958                                 invalidelements++;
4959                 if (invalidelements)
4960                 {
4961                         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);
4962                         for (j = 0;j < out->num_triangles * 3;j++)
4963                         {
4964                                 Con_Printf(" %i", (loadmodel->surfmesh.data_element3i + 3 * out->num_firsttriangle)[j] - out->num_firstvertex);
4965                                 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)
4966                                         (loadmodel->surfmesh.data_element3i + 3 * out->num_firsttriangle)[j] = out->num_firstvertex;
4967                         }
4968                         Con_Print("\n");
4969                 }
4970                 // calculate a bounding box
4971                 VectorClear(out->mins);
4972                 VectorClear(out->maxs);
4973                 if (out->num_vertices)
4974                 {
4975                         VectorCopy((loadmodel->surfmesh.data_vertex3f + 3 * out->num_firstvertex), out->mins);
4976                         VectorCopy((loadmodel->surfmesh.data_vertex3f + 3 * out->num_firstvertex), out->maxs);
4977                         for (j = 1, v = (loadmodel->surfmesh.data_vertex3f + 3 * out->num_firstvertex) + 3;j < out->num_vertices;j++, v += 3)
4978                         {
4979                                 out->mins[0] = min(out->mins[0], v[0]);
4980                                 out->maxs[0] = max(out->maxs[0], v[0]);
4981                                 out->mins[1] = min(out->mins[1], v[1]);
4982                                 out->maxs[1] = max(out->maxs[1], v[1]);
4983                                 out->mins[2] = min(out->mins[2], v[2]);
4984                                 out->maxs[2] = max(out->maxs[2], v[2]);
4985                         }
4986                         out->mins[0] -= 1.0f;
4987                         out->mins[1] -= 1.0f;
4988                         out->mins[2] -= 1.0f;
4989                         out->maxs[0] += 1.0f;
4990                         out->maxs[1] += 1.0f;
4991                         out->maxs[2] += 1.0f;
4992                 }
4993                 // set lightmap styles for consistency with q1bsp
4994                 //out->lightmapinfo->styles[0] = 0;
4995                 //out->lightmapinfo->styles[1] = 255;
4996                 //out->lightmapinfo->styles[2] = 255;
4997                 //out->lightmapinfo->styles[3] = 255;
4998         }
4999
5000         // for per pixel lighting
5001         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);
5002
5003         // free the no longer needed vertex data
5004         loadmodel->brushq3.num_vertices = 0;
5005         Mem_Free(loadmodel->brushq3.data_vertex3f);
5006         loadmodel->brushq3.data_vertex3f = NULL;
5007         loadmodel->brushq3.data_normal3f = NULL;
5008         loadmodel->brushq3.data_texcoordtexture2f = NULL;
5009         loadmodel->brushq3.data_texcoordlightmap2f = NULL;
5010         loadmodel->brushq3.data_color4f = NULL;
5011         // free the no longer needed triangle data
5012         loadmodel->brushq3.num_triangles = 0;
5013         Mem_Free(loadmodel->brushq3.data_element3i);
5014         loadmodel->brushq3.data_element3i = NULL;
5015 }
5016
5017 static void Mod_Q3BSP_LoadModels(lump_t *l)
5018 {
5019         q3dmodel_t *in;
5020         q3dmodel_t *out;
5021         int i, j, n, c, count;
5022
5023         in = (q3dmodel_t *)(mod_base + l->fileofs);
5024         if (l->filelen % sizeof(*in))
5025                 Host_Error("Mod_Q3BSP_LoadModels: funny lump size in %s",loadmodel->name);
5026         count = l->filelen / sizeof(*in);
5027         out = (q3dmodel_t *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
5028
5029         loadmodel->brushq3.data_models = out;
5030         loadmodel->brushq3.num_models = count;
5031
5032         for (i = 0;i < count;i++, in++, out++)
5033         {
5034                 for (j = 0;j < 3;j++)
5035                 {
5036                         out->mins[j] = LittleFloat(in->mins[j]);
5037                         out->maxs[j] = LittleFloat(in->maxs[j]);
5038                 }
5039                 n = LittleLong(in->firstface);
5040                 c = LittleLong(in->numfaces);
5041                 if (n < 0 || n + c > loadmodel->num_surfaces)
5042                         Host_Error("Mod_Q3BSP_LoadModels: invalid face range %i : %i (%i faces)", n, n + c, loadmodel->num_surfaces);
5043                 out->firstface = n;
5044                 out->numfaces = c;
5045                 n = LittleLong(in->firstbrush);
5046                 c = LittleLong(in->numbrushes);
5047                 if (n < 0 || n + c > loadmodel->brush.num_brushes)
5048                         Host_Error("Mod_Q3BSP_LoadModels: invalid brush range %i : %i (%i brushes)", n, n + c, loadmodel->brush.num_brushes);
5049                 out->firstbrush = n;
5050                 out->numbrushes = c;
5051         }
5052 }
5053
5054 static void Mod_Q3BSP_LoadLeafBrushes(lump_t *l)
5055 {
5056         int *in;
5057         int *out;
5058         int i, n, count;
5059
5060         in = (int *)(mod_base + l->fileofs);
5061         if (l->filelen % sizeof(*in))
5062                 Host_Error("Mod_Q3BSP_LoadLeafBrushes: funny lump size in %s",loadmodel->name);
5063         count = l->filelen / sizeof(*in);
5064         out = (int *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
5065
5066         loadmodel->brush.data_leafbrushes = out;
5067         loadmodel->brush.num_leafbrushes = count;
5068
5069         for (i = 0;i < count;i++, in++, out++)
5070         {
5071                 n = LittleLong(*in);
5072                 if (n < 0 || n >= loadmodel->brush.num_brushes)
5073                         Host_Error("Mod_Q3BSP_LoadLeafBrushes: invalid brush index %i (%i brushes)", n, loadmodel->brush.num_brushes);
5074                 *out = n;
5075         }
5076 }
5077
5078 static void Mod_Q3BSP_LoadLeafFaces(lump_t *l)
5079 {
5080         int *in;
5081         int *out;
5082         int i, n, count;
5083
5084         in = (int *)(mod_base + l->fileofs);
5085         if (l->filelen % sizeof(*in))
5086                 Host_Error("Mod_Q3BSP_LoadLeafFaces: funny lump size in %s",loadmodel->name);
5087         count = l->filelen / sizeof(*in);
5088         out = (int *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
5089
5090         loadmodel->brush.data_leafsurfaces = out;
5091         loadmodel->brush.num_leafsurfaces = count;
5092
5093         for (i = 0;i < count;i++, in++, out++)
5094         {
5095                 n = LittleLong(*in);
5096                 if (n < 0 || n >= loadmodel->num_surfaces)
5097                         Host_Error("Mod_Q3BSP_LoadLeafFaces: invalid face index %i (%i faces)", n, loadmodel->num_surfaces);
5098                 *out = n;
5099         }
5100 }
5101
5102 static void Mod_Q3BSP_LoadLeafs(lump_t *l)
5103 {
5104         q3dleaf_t *in;
5105         mleaf_t *out;
5106         int i, j, n, c, count;
5107
5108         in = (q3dleaf_t *)(mod_base + l->fileofs);
5109         if (l->filelen % sizeof(*in))
5110                 Host_Error("Mod_Q3BSP_LoadLeafs: funny lump size in %s",loadmodel->name);
5111         count = l->filelen / sizeof(*in);
5112         out = (mleaf_t *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
5113
5114         loadmodel->brush.data_leafs = out;
5115         loadmodel->brush.num_leafs = count;
5116
5117         for (i = 0;i < count;i++, in++, out++)
5118         {
5119                 out->parent = NULL;
5120                 out->plane = NULL;
5121                 out->clusterindex = LittleLong(in->clusterindex);
5122                 out->areaindex = LittleLong(in->areaindex);
5123                 for (j = 0;j < 3;j++)
5124                 {
5125                         // yes the mins/maxs are ints
5126                         out->mins[j] = LittleLong(in->mins[j]) - 1;
5127                         out->maxs[j] = LittleLong(in->maxs[j]) + 1;
5128                 }
5129                 n = LittleLong(in->firstleafface);
5130                 c = LittleLong(in->numleaffaces);
5131                 if (n < 0 || n + c > loadmodel->brush.num_leafsurfaces)
5132                         Host_Error("Mod_Q3BSP_LoadLeafs: invalid leafsurface range %i : %i (%i leafsurfaces)", n, n + c, loadmodel->brush.num_leafsurfaces);
5133                 out->firstleafsurface = loadmodel->brush.data_leafsurfaces + n;
5134                 out->numleafsurfaces = c;
5135                 n = LittleLong(in->firstleafbrush);
5136                 c = LittleLong(in->numleafbrushes);
5137                 if (n < 0 || n + c > loadmodel->brush.num_leafbrushes)
5138                         Host_Error("Mod_Q3BSP_LoadLeafs: invalid leafbrush range %i : %i (%i leafbrushes)", n, n + c, loadmodel->brush.num_leafbrushes);
5139                 out->firstleafbrush = loadmodel->brush.data_leafbrushes + n;
5140                 out->numleafbrushes = c;
5141         }
5142 }
5143
5144 static void Mod_Q3BSP_LoadNodes(lump_t *l)
5145 {
5146         q3dnode_t *in;
5147         mnode_t *out;
5148         int i, j, n, count;
5149
5150         in = (q3dnode_t *)(mod_base + l->fileofs);
5151         if (l->filelen % sizeof(*in))
5152                 Host_Error("Mod_Q3BSP_LoadNodes: funny lump size in %s",loadmodel->name);
5153         count = l->filelen / sizeof(*in);
5154         out = (mnode_t *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
5155
5156         loadmodel->brush.data_nodes = out;
5157         loadmodel->brush.num_nodes = count;
5158
5159         for (i = 0;i < count;i++, in++, out++)
5160         {
5161                 out->parent = NULL;
5162                 n = LittleLong(in->planeindex);
5163                 if (n < 0 || n >= loadmodel->brush.num_planes)
5164                         Host_Error("Mod_Q3BSP_LoadNodes: invalid planeindex %i (%i planes)", n, loadmodel->brush.num_planes);
5165                 out->plane = loadmodel->brush.data_planes + n;
5166                 for (j = 0;j < 2;j++)
5167                 {
5168                         n = LittleLong(in->childrenindex[j]);
5169                         if (n >= 0)
5170                         {
5171                                 if (n >= loadmodel->brush.num_nodes)
5172                                         Host_Error("Mod_Q3BSP_LoadNodes: invalid child node index %i (%i nodes)", n, loadmodel->brush.num_nodes);
5173                                 out->children[j] = loadmodel->brush.data_nodes + n;
5174                         }
5175                         else
5176                         {
5177                                 n = -1 - n;
5178                                 if (n >= loadmodel->brush.num_leafs)
5179                                         Host_Error("Mod_Q3BSP_LoadNodes: invalid child leaf index %i (%i leafs)", n, loadmodel->brush.num_leafs);
5180                                 out->children[j] = (mnode_t *)(loadmodel->brush.data_leafs + n);
5181                         }
5182                 }
5183                 for (j = 0;j < 3;j++)
5184                 {
5185                         // yes the mins/maxs are ints
5186                         out->mins[j] = LittleLong(in->mins[j]) - 1;
5187                         out->maxs[j] = LittleLong(in->maxs[j]) + 1;
5188                 }
5189         }
5190
5191         // set the parent pointers
5192         Mod_Q1BSP_LoadNodes_RecursiveSetParent(loadmodel->brush.data_nodes, NULL);
5193 }
5194
5195 static void Mod_Q3BSP_LoadLightGrid(lump_t *l)
5196 {
5197         q3dlightgrid_t *in;
5198         q3dlightgrid_t *out;
5199         int count;
5200
5201         in = (q3dlightgrid_t *)(mod_base + l->fileofs);
5202         if (l->filelen % sizeof(*in))
5203                 Host_Error("Mod_Q3BSP_LoadLightGrid: funny lump size in %s",loadmodel->name);
5204         loadmodel->brushq3.num_lightgrid_scale[0] = 1.0f / loadmodel->brushq3.num_lightgrid_cellsize[0];
5205         loadmodel->brushq3.num_lightgrid_scale[1] = 1.0f / loadmodel->brushq3.num_lightgrid_cellsize[1];
5206         loadmodel->brushq3.num_lightgrid_scale[2] = 1.0f / loadmodel->brushq3.num_lightgrid_cellsize[2];
5207         loadmodel->brushq3.num_lightgrid_imins[0] = (int)ceil(loadmodel->brushq3.data_models->mins[0] * loadmodel->brushq3.num_lightgrid_scale[0]);
5208         loadmodel->brushq3.num_lightgrid_imins[1] = (int)ceil(loadmodel->brushq3.data_models->mins[1] * loadmodel->brushq3.num_lightgrid_scale[1]);
5209         loadmodel->brushq3.num_lightgrid_imins[2] = (int)ceil(loadmodel->brushq3.data_models->mins[2] * loadmodel->brushq3.num_lightgrid_scale[2]);
5210         loadmodel->brushq3.num_lightgrid_imaxs[0] = (int)floor(loadmodel->brushq3.data_models->maxs[0] * loadmodel->brushq3.num_lightgrid_scale[0]);
5211         loadmodel->brushq3.num_lightgrid_imaxs[1] = (int)floor(loadmodel->brushq3.data_models->maxs[1] * loadmodel->brushq3.num_lightgrid_scale[1]);
5212         loadmodel->brushq3.num_lightgrid_imaxs[2] = (int)floor(loadmodel->brushq3.data_models->maxs[2] * loadmodel->brushq3.num_lightgrid_scale[2]);
5213         loadmodel->brushq3.num_lightgrid_isize[0] = loadmodel->brushq3.num_lightgrid_imaxs[0] - loadmodel->brushq3.num_lightgrid_imins[0] + 1;
5214         loadmodel->brushq3.num_lightgrid_isize[1] = loadmodel->brushq3.num_lightgrid_imaxs[1] - loadmodel->brushq3.num_lightgrid_imins[1] + 1;
5215         loadmodel->brushq3.num_lightgrid_isize[2] = loadmodel->brushq3.num_lightgrid_imaxs[2] - loadmodel->brushq3.num_lightgrid_imins[2] + 1;
5216         count = loadmodel->brushq3.num_lightgrid_isize[0] * loadmodel->brushq3.num_lightgrid_isize[1] * loadmodel->brushq3.num_lightgrid_isize[2];
5217         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]);
5218         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]);
5219
5220         // if lump is empty there is nothing to load, we can deal with that in the LightPoint code
5221         if (l->filelen)
5222         {
5223                 if (l->filelen < count * (int)sizeof(*in))
5224                         Host_Error("Mod_Q3BSP_LoadLightGrid: invalid lightgrid lump size %i bytes, should be %i bytes (%ix%ix%i)", l->filelen, count * sizeof(*in), loadmodel->brushq3.num_lightgrid_dimensions[0], loadmodel->brushq3.num_lightgrid_dimensions[1], loadmodel->brushq3.num_lightgrid_dimensions[2]);
5225                 if (l->filelen != count * (int)sizeof(*in))
5226                         Con_Printf("Mod_Q3BSP_LoadLightGrid: Warning: calculated lightgrid size %i bytes does not match lump size %i", count * sizeof(*in), l->filelen);
5227                 out = (q3dlightgrid_t *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
5228                 loadmodel->brushq3.data_lightgrid = out;
5229                 loadmodel->brushq3.num_lightgrid = count;
5230                 // no swapping or validation necessary
5231                 memcpy(out, in, count * (int)sizeof(*out));
5232         }
5233 }
5234
5235 static void Mod_Q3BSP_LoadPVS(lump_t *l)
5236 {
5237         q3dpvs_t *in;
5238         int totalchains;
5239
5240         if (l->filelen == 0)
5241         {
5242                 int i;
5243                 // unvised maps often have cluster indices even without pvs, so check
5244                 // leafs to find real number of clusters
5245                 loadmodel->brush.num_pvsclusters = 1;
5246                 for (i = 0;i < loadmodel->brush.num_leafs;i++)
5247                         loadmodel->brush.num_pvsclusters = max(loadmodel->brush.num_pvsclusters, loadmodel->brush.data_leafs[i].clusterindex + 1);
5248
5249                 // create clusters
5250                 loadmodel->brush.num_pvsclusterbytes = (loadmodel->brush.num_pvsclusters + 7) / 8;
5251                 totalchains = loadmodel->brush.num_pvsclusterbytes * loadmodel->brush.num_pvsclusters;
5252                 loadmodel->brush.data_pvsclusters = (unsigned char *)Mem_Alloc(loadmodel->mempool, totalchains);
5253                 memset(loadmodel->brush.data_pvsclusters, 0xFF, totalchains);
5254                 return;
5255         }
5256
5257         in = (q3dpvs_t *)(mod_base + l->fileofs);
5258         if (l->filelen < 9)
5259                 Host_Error("Mod_Q3BSP_LoadPVS: funny lump size in %s",loadmodel->name);
5260
5261         loadmodel->brush.num_pvsclusters = LittleLong(in->numclusters);
5262         loadmodel->brush.num_pvsclusterbytes = LittleLong(in->chainlength);
5263         if (loadmodel->brush.num_pvsclusterbytes < ((loadmodel->brush.num_pvsclusters + 7) / 8))
5264                 Host_Error("Mod_Q3BSP_LoadPVS: (chainlength = %i) < ((numclusters = %i) + 7) / 8", loadmodel->brush.num_pvsclusterbytes, loadmodel->brush.num_pvsclusters);
5265         totalchains = loadmodel->brush.num_pvsclusterbytes * loadmodel->brush.num_pvsclusters;
5266         if (l->filelen < totalchains + (int)sizeof(*in))
5267                 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, totalchains + sizeof(*in), l->filelen);
5268
5269         loadmodel->brush.data_pvsclusters = (unsigned char *)Mem_Alloc(loadmodel->mempool, totalchains);
5270         memcpy(loadmodel->brush.data_pvsclusters, (unsigned char *)(in + 1), totalchains);
5271 }
5272
5273 static void Mod_Q3BSP_LightPoint(model_t *model, const vec3_t p, vec3_t ambientcolor, vec3_t diffusecolor, vec3_t diffusenormal)
5274 {
5275         int i, j, k, index[3];
5276         float transformed[3], blend1, blend2, blend, yaw, pitch, sinpitch;
5277         q3dlightgrid_t *a, *s;
5278         if (!model->brushq3.num_lightgrid)
5279         {
5280                 ambientcolor[0] = 1;
5281                 ambientcolor[1] = 1;
5282                 ambientcolor[2] = 1;
5283                 return;
5284         }
5285         Matrix4x4_Transform(&model->brushq3.num_lightgrid_indexfromworld, p, transformed);
5286         //Matrix4x4_Print(&model->brushq3.num_lightgrid_indexfromworld);
5287         //Con_Printf("%f %f %f transformed %f %f %f clamped ", p[0], p[1], p[2], transformed[0], transformed[1], transformed[2]);
5288         transformed[0] = bound(0, transformed[0], model->brushq3.num_lightgrid_isize[0] - 1);
5289         transformed[1] = bound(0, transformed[1], model->brushq3.num_lightgrid_isize[1] - 1);
5290         transformed[2] = bound(0, transformed[2], model->brushq3.num_lightgrid_isize[2] - 1);
5291         index[0] = (int)floor(transformed[0]);
5292         index[1] = (int)floor(transformed[1]);
5293         index[2] = (int)floor(transformed[2]);
5294         //Con_Printf("%f %f %f index %i %i %i:\n", transformed[0], transformed[1], transformed[2], index[0], index[1], index[2]);
5295         // now lerp the values
5296         VectorClear(diffusenormal);
5297         a = &model->brushq3.data_lightgrid[(index[2] * model->brushq3.num_lightgrid_isize[1] + index[1]) * model->brushq3.num_lightgrid_isize[0] + index[0]];
5298         for (k = 0;k < 2;k++)
5299         {
5300                 blend1 = (k ? (transformed[2] - index[2]) : (1 - (transformed[2] - index[2])));
5301                 if (blend1 < 0.001f || index[2] + k >= model->brushq3.num_lightgrid_isize[2])
5302                         continue;
5303                 for (j = 0;j < 2;j++)
5304                 {
5305                         blend2 = blend1 * (j ? (transformed[1] - index[1]) : (1 - (transformed[1] - index[1])));
5306                         if (blend2 < 0.001f || index[1] + j >= model->brushq3.num_lightgrid_isize[1])
5307                                 continue;
5308                         for (i = 0;i < 2;i++)
5309                         {
5310                                 blend = blend2 * (i ? (transformed[0] - index[0]) : (1 - (transformed[0] - index[0])));
5311                                 if (blend < 0.001f || index[0] + i >= model->brushq3.num_lightgrid_isize[0])
5312                                         continue;
5313                                 s = a + (k * model->brushq3.num_lightgrid_isize[1] + j) * model->brushq3.num_lightgrid_isize[0] + i;
5314                                 VectorMA(ambientcolor, blend * (1.0f / 128.0f), s->ambientrgb, ambientcolor);
5315                                 VectorMA(diffusecolor, blend * (1.0f / 128.0f), s->diffusergb, diffusecolor);
5316                                 pitch = s->diffusepitch * M_PI / 128;
5317                                 yaw = s->diffuseyaw * M_PI / 128;
5318                                 sinpitch = sin(pitch);
5319                                 diffusenormal[0] += blend * (cos(yaw) * sinpitch);
5320                                 diffusenormal[1] += blend * (sin(yaw) * sinpitch);
5321                                 diffusenormal[2] += blend * (cos(pitch));
5322                                 //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)));
5323                         }
5324                 }
5325         }
5326         VectorNormalize(diffusenormal);
5327         //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]);
5328 }
5329
5330 static void Mod_Q3BSP_TracePoint_RecursiveBSPNode(trace_t *trace, model_t *model, mnode_t *node, const vec3_t point, int markframe)
5331 {
5332         int i;
5333         mleaf_t *leaf;
5334         colbrushf_t *brush;
5335         // find which leaf the point is in
5336         while (node->plane)
5337                 node = node->children[DotProduct(point, node->plane->normal) < node->plane->dist];
5338         // point trace the brushes
5339         leaf = (mleaf_t *)node;
5340         for (i = 0;i < leaf->numleafbrushes;i++)
5341         {
5342                 brush = model->brush.data_brushes[leaf->firstleafbrush[i]].colbrushf;
5343                 if (brush && brush->markframe != markframe && BoxesOverlap(point, point, brush->mins, brush->maxs))
5344                 {
5345                         brush->markframe = markframe;
5346                         Collision_TracePointBrushFloat(trace, point, brush);
5347                 }
5348         }
5349         // can't do point traces on curves (they have no thickness)
5350 }
5351
5352 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)
5353 {
5354         int i, startside, endside;
5355         float dist1, dist2, midfrac, mid[3], nodesegmentmins[3], nodesegmentmaxs[3];
5356         mleaf_t *leaf;
5357         msurface_t *surface;
5358         mplane_t *plane;
5359         colbrushf_t *brush;
5360         // walk the tree until we hit a leaf, recursing for any split cases
5361         while (node->plane)
5362         {
5363                 plane = node->plane;
5364                 // axial planes are much more common than non-axial, so an optimized
5365                 // axial case pays off here
5366                 if (plane->type < 3)
5367                 {
5368                         dist1 = start[plane->type] - plane->dist;
5369                         dist2 = end[plane->type] - plane->dist;
5370                 }
5371                 else
5372                 {
5373                         dist1 = DotProduct(start, plane->normal) - plane->dist;
5374                         dist2 = DotProduct(end, plane->normal) - plane->dist;
5375                 }
5376                 startside = dist1 < 0;
5377                 endside = dist2 < 0;
5378                 if (startside == endside)
5379                 {
5380                         // most of the time the line fragment is on one side of the plane
5381                         node = node->children[startside];
5382                 }
5383                 else
5384                 {
5385                         // line crosses node plane, split the line
5386                         dist1 = PlaneDiff(linestart, plane);
5387                         dist2 = PlaneDiff(lineend, plane);
5388                         midfrac = dist1 / (dist1 - dist2);
5389                         VectorLerp(linestart, midfrac, lineend, mid);
5390                         // take the near side first
5391                         Mod_Q3BSP_TraceLine_RecursiveBSPNode(trace, model, node->children[startside], start, mid, startfrac, midfrac, linestart, lineend, markframe, segmentmins, segmentmaxs);
5392                         // if we found an impact on the front side, don't waste time
5393                         // exploring the far side
5394                         if (midfrac <= trace->realfraction)
5395                                 Mod_Q3BSP_TraceLine_RecursiveBSPNode(trace, model, node->children[endside], mid, end, midfrac, endfrac, linestart, lineend, markframe, segmentmins, segmentmaxs);
5396                         return;
5397                 }
5398         }
5399         // hit a leaf
5400         nodesegmentmins[0] = min(start[0], end[0]) - 1;
5401         nodesegmentmins[1] = min(start[1], end[1]) - 1;
5402         nodesegmentmins[2] = min(start[2], end[2]) - 1;
5403         nodesegmentmaxs[0] = max(start[0], end[0]) + 1;
5404         nodesegmentmaxs[1] = max(start[1], end[1]) + 1;
5405         nodesegmentmaxs[2] = max(start[2], end[2]) + 1;
5406         // line trace the brushes
5407         leaf = (mleaf_t *)node;
5408         for (i = 0;i < leaf->numleafbrushes;i++)
5409         {
5410                 brush = model->brush.data_brushes[leaf->firstleafbrush[i]].colbrushf;
5411                 if (brush && brush->markframe != markframe && BoxesOverlap(nodesegmentmins, nodesegmentmaxs, brush->mins, brush->maxs))
5412                 {
5413                         brush->markframe = markframe;
5414                         Collision_TraceLineBrushFloat(trace, linestart, lineend, brush, brush);
5415                 }
5416         }
5417         // can't do point traces on curves (they have no thickness)
5418         if (mod_q3bsp_curves_collisions.integer && !VectorCompare(start, end))
5419         {
5420                 // line trace the curves
5421                 for (i = 0;i < leaf->numleafsurfaces;i++)
5422                 {
5423                         surface = model->data_surfaces + leaf->firstleafsurface[i];
5424                         if (surface->num_collisiontriangles && surface->collisionmarkframe != markframe && BoxesOverlap(nodesegmentmins, nodesegmentmaxs, surface->mins, surface->maxs))
5425                         {
5426                                 surface->collisionmarkframe = markframe;
5427                                 Collision_TraceLineTriangleMeshFloat(trace, linestart, lineend, surface->num_collisiontriangles, surface->data_collisionelement3i, surface->data_collisionvertex3f, surface->texture->supercontents, surface->texture->surfaceflags, surface->texture, segmentmins, segmentmaxs);
5428                         }
5429                 }
5430         }
5431 }
5432
5433 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)
5434 {
5435         int i;
5436         int sides;
5437         mleaf_t *leaf;
5438         colbrushf_t *brush;
5439         msurface_t *surface;
5440         mplane_t *plane;
5441         float nodesegmentmins[3], nodesegmentmaxs[3];
5442         // walk the tree until we hit a leaf, recursing for any split cases
5443         while (node->plane)
5444         {
5445                 plane = node->plane;
5446                 // axial planes are much more common than non-axial, so an optimized
5447                 // axial case pays off here
5448                 if (plane->type < 3)
5449                 {
5450                         // this is an axial plane, compare bounding box directly to it and
5451                         // recurse sides accordingly
5452                         // recurse down node sides
5453                         // use an inlined axial BoxOnPlaneSide to slightly reduce overhead
5454                         //sides = BoxOnPlaneSide(nodesegmentmins, nodesegmentmaxs, plane);
5455                         //sides = ((segmentmaxs[plane->type] >= plane->dist) | ((segmentmins[plane->type] < plane->dist) << 1));
5456                         sides = ((segmentmaxs[plane->type] >= plane->dist) + ((segmentmins[plane->type] < plane->dist) * 2));
5457                 }
5458                 else
5459                 {
5460                         // this is a non-axial plane, so check if the start and end boxes
5461                         // are both on one side of the plane to handle 'diagonal' cases
5462                         sides = BoxOnPlaneSide(thisbrush_start->mins, thisbrush_start->maxs, plane) | BoxOnPlaneSide(thisbrush_end->mins, thisbrush_end->maxs, plane);
5463                 }
5464                 if (sides == 3)
5465                 {
5466                         // segment crosses plane
5467                         Mod_Q3BSP_TraceBrush_RecursiveBSPNode(trace, model, node->children[0], thisbrush_start, thisbrush_end, markframe, segmentmins, segmentmaxs);
5468                         sides = 2;
5469                 }
5470                 // if sides == 0 then the trace itself is bogus (Not A Number values),
5471                 // in this case we simply pretend the trace hit nothing
5472                 if (sides == 0)
5473                         return; // ERROR: NAN bounding box!
5474                 // take whichever side the segment box is on
5475                 node = node->children[sides - 1];
5476         }
5477         nodesegmentmins[0] = max(segmentmins[0], node->mins[0] - 1);
5478         nodesegmentmins[1] = max(segmentmins[1], node->mins[1] - 1);
5479         nodesegmentmins[2] = max(segmentmins[2], node->mins[2] - 1);
5480         nodesegmentmaxs[0] = min(segmentmaxs[0], node->maxs[0] + 1);
5481         nodesegmentmaxs[1] = min(segmentmaxs[1], node->maxs[1] + 1);
5482         nodesegmentmaxs[2] = min(segmentmaxs[2], node->maxs[2] + 1);
5483         // hit a leaf
5484         leaf = (mleaf_t *)node;
5485         for (i = 0;i < leaf->numleafbrushes;i++)
5486         {
5487                 brush = model->brush.data_brushes[leaf->firstleafbrush[i]].colbrushf;
5488                 if (brush && brush->markframe != markframe && BoxesOverlap(nodesegmentmins, nodesegmentmaxs, brush->mins, brush->maxs))
5489                 {
5490                         brush->markframe = markframe;
5491                         Collision_TraceBrushBrushFloat(trace, thisbrush_start, thisbrush_end, brush, brush);
5492                 }
5493         }
5494         if (mod_q3bsp_curves_collisions.integer)
5495         {
5496                 for (i = 0;i < leaf->numleafsurfaces;i++)
5497                 {
5498                         surface = model->data_surfaces + leaf->firstleafsurface[i];
5499                         if (surface->num_collisiontriangles && surface->collisionmarkframe != markframe && BoxesOverlap(nodesegmentmins, nodesegmentmaxs, surface->mins, surface->maxs))
5500                         {
5501                                 surface->collisionmarkframe = markframe;
5502                                 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);
5503                         }
5504                 }
5505         }
5506 }
5507
5508 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)
5509 {
5510         int i;
5511         float segmentmins[3], segmentmaxs[3];
5512         static int markframe = 0;
5513         msurface_t *surface;
5514         q3mbrush_t *brush;
5515         memset(trace, 0, sizeof(*trace));
5516         trace->fraction = 1;
5517         trace->realfraction = 1;
5518         trace->hitsupercontentsmask = hitsupercontentsmask;
5519         if (mod_q3bsp_optimizedtraceline.integer && VectorLength2(boxmins) + VectorLength2(boxmaxs) == 0)
5520         {
5521                 if (VectorCompare(start, end))
5522                 {
5523                         // point trace
5524                         if (model->brush.submodel)
5525                         {
5526                                 for (i = 0, brush = model->brush.data_brushes + model->firstmodelbrush;i < model->nummodelbrushes;i++, brush++)
5527                                         if (brush->colbrushf)
5528                                                 Collision_TracePointBrushFloat(trace, start, brush->colbrushf);
5529                         }
5530                         else
5531                                 Mod_Q3BSP_TracePoint_RecursiveBSPNode(trace, model, model->brush.data_nodes, start, ++markframe);
5532                 }
5533                 else
5534                 {
5535                         // line trace
5536                         segmentmins[0] = min(start[0], end[0]) - 1;
5537                         segmentmins[1] = min(start[1], end[1]) - 1;
5538                         segmentmins[2] = min(start[2], end[2]) - 1;
5539                         segmentmaxs[0] = max(start[0], end[0]) + 1;
5540                         segmentmaxs[1] = max(start[1], end[1]) + 1;
5541                         segmentmaxs[2] = max(start[2], end[2]) + 1;
5542                         if (model->brush.submodel)
5543                         {
5544                                 for (i = 0, brush = model->brush.data_brushes + model->firstmodelbrush;i < model->nummodelbrushes;i++, brush++)
5545                                         if (brush->colbrushf)
5546                                                 Collision_TraceLineBrushFloat(trace, start, end, brush->colbrushf, brush->colbrushf);
5547                                 if (mod_q3bsp_curves_collisions.integer)
5548                                         for (i = 0, surface = model->data_surfaces + model->firstmodelsurface;i < model->nummodelsurfaces;i++, surface++)
5549                                                 if (surface->num_collisiontriangles)
5550                                                         Collision_TraceLineTriangleMeshFloat(trace, start, end, surface->num_collisiontriangles, surface->data_collisionelement3i, surface->data_collisionvertex3f, surface->texture->supercontents, surface->texture->surfaceflags, surface->texture, segmentmins, segmentmaxs);
5551                         }
5552                         else
5553                                 Mod_Q3BSP_TraceLine_RecursiveBSPNode(trace, model, model->brush.data_nodes, start, end, 0, 1, start, end, ++markframe, segmentmins, segmentmaxs);
5554                 }
5555         }
5556         else
5557         {
5558                 // box trace, performed as brush trace
5559                 colbrushf_t *thisbrush_start, *thisbrush_end;
5560                 vec3_t boxstartmins, boxstartmaxs, boxendmins, boxendmaxs;
5561                 segmentmins[0] = min(start[0], end[0]) + boxmins[0] - 1;
5562                 segmentmins[1] = min(start[1], end[1]) + boxmins[1] - 1;
5563                 segmentmins[2] = min(start[2], end[2]) + boxmins[2] - 1;
5564                 segmentmaxs[0] = max(start[0], end[0]) + boxmaxs[0] + 1;
5565                 segmentmaxs[1] = max(start[1], end[1]) + boxmaxs[1] + 1;
5566                 segmentmaxs[2] = max(start[2], end[2]) + boxmaxs[2] + 1;
5567                 VectorAdd(start, boxmins, boxstartmins);
5568                 VectorAdd(start, boxmaxs, boxstartmaxs);
5569                 VectorAdd(end, boxmins, boxendmins);
5570                 VectorAdd(end, boxmaxs, boxendmaxs);
5571                 thisbrush_start = Collision_BrushForBox(&identitymatrix, boxstartmins, boxstartmaxs, 0, 0, NULL);
5572                 thisbrush_end = Collision_BrushForBox(&identitymatrix, boxendmins, boxendmaxs, 0, 0, NULL);
5573                 if (model->brush.submodel)
5574                 {
5575                         for (i = 0, brush = model->brush.data_brushes + model->firstmodelbrush;i < model->nummodelbrushes;i++, brush++)
5576                                 if (brush->colbrushf)
5577                                         Collision_TraceBrushBrushFloat(trace, thisbrush_start, thisbrush_end, brush->colbrushf, brush->colbrushf);
5578                         if (mod_q3bsp_curves_collisions.integer)
5579                                 for (i = 0, surface = model->data_surfaces + model->firstmodelsurface;i < model->nummodelsurfaces;i++, surface++)
5580                                         if (surface->num_collisiontriangles)
5581                                                 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);
5582                 }
5583                 else
5584                         Mod_Q3BSP_TraceBrush_RecursiveBSPNode(trace, model, model->brush.data_nodes, thisbrush_start, thisbrush_end, ++markframe, segmentmins, segmentmaxs);
5585         }
5586 }
5587
5588 static int Mod_Q3BSP_SuperContentsFromNativeContents(model_t *model, int nativecontents)
5589 {
5590         int supercontents = 0;
5591         if (nativecontents & CONTENTSQ3_SOLID)
5592                 supercontents |= SUPERCONTENTS_SOLID;
5593         if (nativecontents & CONTENTSQ3_WATER)
5594                 supercontents |= SUPERCONTENTS_WATER;
5595         if (nativecontents & CONTENTSQ3_SLIME)
5596                 supercontents |= SUPERCONTENTS_SLIME;
5597         if (nativecontents & CONTENTSQ3_LAVA)
5598                 supercontents |= SUPERCONTENTS_LAVA;
5599         if (nativecontents & CONTENTSQ3_BODY)
5600                 supercontents |= SUPERCONTENTS_BODY;
5601         if (nativecontents & CONTENTSQ3_CORPSE)
5602                 supercontents |= SUPERCONTENTS_CORPSE;
5603         if (nativecontents & CONTENTSQ3_NODROP)
5604                 supercontents |= SUPERCONTENTS_NODROP;
5605         if (nativecontents & CONTENTSQ3_PLAYERCLIP)
5606                 supercontents |= SUPERCONTENTS_PLAYERCLIP;
5607         if (nativecontents & CONTENTSQ3_MONSTERCLIP)
5608                 supercontents |= SUPERCONTENTS_MONSTERCLIP;
5609         if (nativecontents & CONTENTSQ3_DONOTENTER)
5610                 supercontents |= SUPERCONTENTS_DONOTENTER;
5611         return supercontents;
5612 }
5613
5614 static int Mod_Q3BSP_NativeContentsFromSuperContents(model_t *model, int supercontents)
5615 {
5616         int nativecontents = 0;
5617         if (supercontents & SUPERCONTENTS_SOLID)
5618                 nativecontents |= CONTENTSQ3_SOLID;
5619         if (supercontents & SUPERCONTENTS_WATER)
5620                 nativecontents |= CONTENTSQ3_WATER;
5621         if (supercontents & SUPERCONTENTS_SLIME)
5622                 nativecontents |= CONTENTSQ3_SLIME;
5623         if (supercontents & SUPERCONTENTS_LAVA)
5624                 nativecontents |= CONTENTSQ3_LAVA;
5625         if (supercontents & SUPERCONTENTS_BODY)
5626                 nativecontents |= CONTENTSQ3_BODY;
5627         if (supercontents & SUPERCONTENTS_CORPSE)
5628                 nativecontents |= CONTENTSQ3_CORPSE;
5629         if (supercontents & SUPERCONTENTS_NODROP)
5630                 nativecontents |= CONTENTSQ3_NODROP;
5631         if (supercontents & SUPERCONTENTS_PLAYERCLIP)
5632                 nativecontents |= CONTENTSQ3_PLAYERCLIP;
5633         if (supercontents & SUPERCONTENTS_MONSTERCLIP)
5634                 nativecontents |= CONTENTSQ3_MONSTERCLIP;
5635         if (supercontents & SUPERCONTENTS_DONOTENTER)
5636                 nativecontents |= CONTENTSQ3_DONOTENTER;
5637         return nativecontents;
5638 }
5639
5640 void Mod_Q3BSP_RecursiveFindNumLeafs(mnode_t *node)
5641 {
5642         int numleafs;
5643         while (node->plane)
5644         {
5645                 Mod_Q3BSP_RecursiveFindNumLeafs(node->children[0]);
5646                 node = node->children[1];
5647         }
5648         numleafs = ((mleaf_t *)node - loadmodel->brush.data_leafs) + 1;
5649         if (loadmodel->brush.num_leafs < numleafs)
5650                 loadmodel->brush.num_leafs = numleafs;
5651 }
5652
5653 void Mod_Q3BSP_Load(model_t *mod, void *buffer, void *bufferend)
5654 {
5655         int i, j, numshadowmeshtriangles;
5656         q3dheader_t *header;
5657         float corner[3], yawradius, modelradius;
5658         msurface_t *surface;
5659
5660         mod->type = mod_brushq3;
5661         mod->numframes = 2; // although alternate textures are not supported it is annoying to complain about no such frame 1
5662         mod->numskins = 1;
5663
5664         header = (q3dheader_t *)buffer;
5665
5666         i = LittleLong(header->version);
5667         if (i != Q3BSPVERSION)
5668                 Host_Error("Mod_Q3BSP_Load: %s has wrong version number (%i, should be %i)", mod->name, i, Q3BSPVERSION);
5669         mod->brush.ishlbsp = false;
5670         mod->brush.ismcbsp = false;
5671         if (loadmodel->isworldmodel)
5672         {
5673                 Cvar_SetValue("halflifebsp", mod->brush.ishlbsp);
5674                 Cvar_SetValue("mcbsp", mod->brush.ismcbsp);
5675         }
5676
5677         mod->soundfromcenter = true;
5678         mod->TraceBox = Mod_Q3BSP_TraceBox;
5679         mod->brush.SuperContentsFromNativeContents = Mod_Q3BSP_SuperContentsFromNativeContents;
5680         mod->brush.NativeContentsFromSuperContents = Mod_Q3BSP_NativeContentsFromSuperContents;
5681         mod->brush.GetPVS = Mod_Q1BSP_GetPVS;
5682         mod->brush.FatPVS = Mod_Q1BSP_FatPVS;
5683         mod->brush.BoxTouchingPVS = Mod_Q1BSP_BoxTouchingPVS;
5684         mod->brush.BoxTouchingLeafPVS = Mod_Q1BSP_BoxTouchingLeafPVS;
5685         mod->brush.BoxTouchingVisibleLeafs = Mod_Q1BSP_BoxTouchingVisibleLeafs;
5686         mod->brush.FindBoxClusters = Mod_Q1BSP_FindBoxClusters;
5687         mod->brush.LightPoint = Mod_Q3BSP_LightPoint;
5688         mod->brush.FindNonSolidLocation = Mod_Q1BSP_FindNonSolidLocation;
5689         mod->brush.PointInLeaf = Mod_Q1BSP_PointInLeaf;
5690         mod->Draw = R_Q1BSP_Draw;
5691         mod->GetLightInfo = R_Q1BSP_GetLightInfo;
5692         mod->CompileShadowVolume = R_Q1BSP_CompileShadowVolume;
5693         mod->DrawShadowVolume = R_Q1BSP_DrawShadowVolume;
5694         mod->DrawLight = R_Q1BSP_DrawLight;
5695
5696         mod_base = (unsigned char *)header;
5697
5698         // swap all the lumps
5699         header->ident = LittleLong(header->ident);
5700         header->version = LittleLong(header->version);
5701         for (i = 0;i < Q3HEADER_LUMPS;i++)
5702         {
5703                 header->lumps[i].fileofs = LittleLong(header->lumps[i].fileofs);
5704                 header->lumps[i].filelen = LittleLong(header->lumps[i].filelen);
5705         }
5706
5707         mod->brush.qw_md4sum = 0;
5708         mod->brush.qw_md4sum2 = 0;
5709         for (i = 0;i < Q3HEADER_LUMPS;i++)
5710         {
5711                 if (i == Q3LUMP_ENTITIES)
5712                         continue;
5713                 mod->brush.qw_md4sum ^= Com_BlockChecksum(mod_base + header->lumps[i].fileofs, header->lumps[i].filelen);
5714                 if (i == Q3LUMP_PVS || i == Q3LUMP_LEAFS || i == Q3LUMP_NODES)
5715                         continue;
5716                 mod->brush.qw_md4sum2 ^= Com_BlockChecksum(mod_base + header->lumps[i].fileofs, header->lumps[i].filelen);
5717         }
5718
5719         Mod_Q3BSP_LoadEntities(&header->lumps[Q3LUMP_ENTITIES]);
5720         Mod_Q3BSP_LoadTextures(&header->lumps[Q3LUMP_TEXTURES]);
5721         Mod_Q3BSP_LoadPlanes(&header->lumps[Q3LUMP_PLANES]);
5722         Mod_Q3BSP_LoadBrushSides(&header->lumps[Q3LUMP_BRUSHSIDES]);
5723         Mod_Q3BSP_LoadBrushes(&header->lumps[Q3LUMP_BRUSHES]);
5724         Mod_Q3BSP_LoadEffects(&header->lumps[Q3LUMP_EFFECTS]);
5725         Mod_Q3BSP_LoadVertices(&header->lumps[Q3LUMP_VERTICES]);
5726         Mod_Q3BSP_LoadTriangles(&header->lumps[Q3LUMP_TRIANGLES]);
5727         Mod_Q3BSP_LoadLightmaps(&header->lumps[Q3LUMP_LIGHTMAPS]);
5728         Mod_Q3BSP_LoadFaces(&header->lumps[Q3LUMP_FACES]);
5729         Mod_Q3BSP_LoadModels(&header->lumps[Q3LUMP_MODELS]);
5730         Mod_Q3BSP_LoadLeafBrushes(&header->lumps[Q3LUMP_LEAFBRUSHES]);
5731         Mod_Q3BSP_LoadLeafFaces(&header->lumps[Q3LUMP_LEAFFACES]);
5732         Mod_Q3BSP_LoadLeafs(&header->lumps[Q3LUMP_LEAFS]);
5733         Mod_Q3BSP_LoadNodes(&header->lumps[Q3LUMP_NODES]);
5734         Mod_Q3BSP_LoadLightGrid(&header->lumps[Q3LUMP_LIGHTGRID]);
5735         Mod_Q3BSP_LoadPVS(&header->lumps[Q3LUMP_PVS]);
5736         loadmodel->brush.numsubmodels = loadmodel->brushq3.num_models;
5737
5738         // the MakePortals code works fine on the q3bsp data as well
5739         Mod_Q1BSP_MakePortals();
5740
5741         // make a single combined shadow mesh to allow optimized shadow volume creation
5742         numshadowmeshtriangles = 0;
5743         for (j = 0, surface = loadmodel->data_surfaces;j < loadmodel->num_surfaces;j++, surface++)
5744         {
5745                 surface->num_firstshadowmeshtriangle = numshadowmeshtriangles;
5746                 numshadowmeshtriangles += surface->num_triangles;
5747         }
5748         loadmodel->brush.shadowmesh = Mod_ShadowMesh_Begin(loadmodel->mempool, numshadowmeshtriangles * 3, numshadowmeshtriangles, NULL, NULL, NULL, false, false, true);
5749         for (j = 0, surface = loadmodel->data_surfaces;j < loadmodel->num_surfaces;j++, surface++)
5750                 if (surface->num_triangles > 0)
5751                         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));
5752         loadmodel->brush.shadowmesh = Mod_ShadowMesh_Finish(loadmodel->mempool, loadmodel->brush.shadowmesh, false, true);
5753         Mod_BuildTriangleNeighbors(loadmodel->brush.shadowmesh->neighbor3i, loadmodel->brush.shadowmesh->element3i, loadmodel->brush.shadowmesh->numtriangles);
5754
5755         loadmodel->brush.num_leafs = 0;
5756         Mod_Q3BSP_RecursiveFindNumLeafs(loadmodel->brush.data_nodes);
5757
5758         if (loadmodel->isworldmodel)
5759         {
5760                 // clear out any stale submodels or worldmodels lying around
5761                 // if we did this clear before now, an error might abort loading and
5762                 // leave things in a bad state
5763                 Mod_RemoveStaleWorldModels(loadmodel);
5764         }
5765
5766         mod = loadmodel;
5767         for (i = 0;i < loadmodel->brush.numsubmodels;i++)
5768         {
5769                 if (i > 0)
5770                 {
5771                         char name[10];
5772                         // LordHavoc: only register submodels if it is the world
5773                         // (prevents external bsp models from replacing world submodels with
5774                         //  their own)
5775                         if (!loadmodel->isworldmodel)
5776                                 continue;
5777                         // duplicate the basic information
5778                         sprintf(name, "*%i", i);
5779                         mod = Mod_FindName(name);
5780                         *mod = *loadmodel;
5781                         strlcpy(mod->name, name, sizeof(mod->name));
5782                         // textures and memory belong to the main model
5783                         mod->texturepool = NULL;
5784                         mod->mempool = NULL;
5785                         mod->brush.GetPVS = NULL;
5786                         mod->brush.FatPVS = NULL;
5787                         mod->brush.BoxTouchingPVS = NULL;
5788                         mod->brush.BoxTouchingLeafPVS = NULL;
5789                         mod->brush.BoxTouchingVisibleLeafs = NULL;
5790                         mod->brush.FindBoxClusters = NULL;
5791                         mod->brush.LightPoint = NULL;
5792                         mod->brush.FindNonSolidLocation = Mod_Q1BSP_FindNonSolidLocation;
5793                 }
5794                 mod->brush.submodel = i;
5795
5796                 // make the model surface list (used by shadowing/lighting)
5797                 mod->firstmodelsurface = mod->brushq3.data_models[i].firstface;
5798                 mod->nummodelsurfaces = mod->brushq3.data_models[i].numfaces;
5799                 mod->firstmodelbrush = mod->brushq3.data_models[i].firstbrush;
5800                 mod->nummodelbrushes = mod->brushq3.data_models[i].numbrushes;
5801                 mod->surfacelist = (int *)Mem_Alloc(loadmodel->mempool, mod->nummodelsurfaces * sizeof(*mod->surfacelist));
5802                 for (j = 0;j < mod->nummodelsurfaces;j++)
5803                         mod->surfacelist[j] = mod->firstmodelsurface + j;
5804
5805                 VectorCopy(mod->brushq3.data_models[i].mins, mod->normalmins);
5806                 VectorCopy(mod->brushq3.data_models[i].maxs, mod->normalmaxs);
5807                 corner[0] = max(fabs(mod->normalmins[0]), fabs(mod->normalmaxs[0]));
5808                 corner[1] = max(fabs(mod->normalmins[1]), fabs(mod->normalmaxs[1]));
5809                 corner[2] = max(fabs(mod->normalmins[2]), fabs(mod->normalmaxs[2]));
5810                 modelradius = sqrt(corner[0]*corner[0]+corner[1]*corner[1]+corner[2]*corner[2]);
5811                 yawradius = sqrt(corner[0]*corner[0]+corner[1]*corner[1]);
5812                 mod->rotatedmins[0] = mod->rotatedmins[1] = mod->rotatedmins[2] = -modelradius;
5813                 mod->rotatedmaxs[0] = mod->rotatedmaxs[1] = mod->rotatedmaxs[2] = modelradius;
5814                 mod->yawmaxs[0] = mod->yawmaxs[1] = yawradius;
5815                 mod->yawmins[0] = mod->yawmins[1] = -yawradius;
5816                 mod->yawmins[2] = mod->normalmins[2];
5817                 mod->yawmaxs[2] = mod->normalmaxs[2];
5818                 mod->radius = modelradius;
5819                 mod->radius2 = modelradius * modelradius;
5820
5821                 for (j = 0;j < mod->nummodelsurfaces;j++)
5822                         if (mod->data_surfaces[j + mod->firstmodelsurface].texture->surfaceflags & Q3SURFACEFLAG_SKY)
5823                                 break;
5824                 if (j < mod->nummodelsurfaces)
5825                         mod->DrawSky = R_Q1BSP_DrawSky;
5826         }
5827 }
5828
5829 void Mod_IBSP_Load(model_t *mod, void *buffer, void *bufferend)
5830 {
5831         int i = LittleLong(((int *)buffer)[1]);
5832         if (i == Q3BSPVERSION)
5833                 Mod_Q3BSP_Load(mod,buffer, bufferend);
5834         else if (i == Q2BSPVERSION)
5835                 Mod_Q2BSP_Load(mod,buffer, bufferend);
5836         else
5837                 Host_Error("Mod_IBSP_Load: unknown/unsupported version %i", i);
5838 }
5839
5840 void Mod_MAP_Load(model_t *mod, void *buffer, void *bufferend)
5841 {
5842         Host_Error("Mod_MAP_Load: not yet implemented");
5843 }
5844