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].supercontents = boxsupercontents;cbox_planes[0].q3surfaceflags = boxq3surfaceflags;cbox_planes[0].texture = boxtexture;
 907         cbox_planes[1].supercontents = boxsupercontents;cbox_planes[1].q3surfaceflags = boxq3surfaceflags;cbox_planes[1].texture = boxtexture;
 908         cbox_planes[2].supercontents = boxsupercontents;cbox_planes[2].q3surfaceflags = boxq3surfaceflags;cbox_planes[2].texture = boxtexture;
 909         cbox_planes[3].supercontents = boxsupercontents;cbox_planes[3].q3surfaceflags = boxq3surfaceflags;cbox_planes[3].texture = boxtexture;
 910         cbox_planes[4].supercontents = boxsupercontents;cbox_planes[4].q3surfaceflags = boxq3surfaceflags;cbox_planes[4].texture = boxtexture;
 911         cbox_planes[5].supercontents = boxsupercontents;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                 strcpy(tx->name, "NO TEXTURE FOUND");
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/", 4))
1284                 s += 4;
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                 strcpy(tx->name, 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_ParseToken(&data, false))
1643                 return; // error
1644         if (com_token[0] != '{')
1645                 return; // error
1646         while (1)
1647         {
1648                 if (!COM_ParseToken(&data, false))
1649                         return; // error
1650                 if (com_token[0] == '}')
1651                         break; // end of worldspawn
1652                 if (com_token[0] == '_')
1653                         strcpy(key, com_token + 1);
1654                 else
1655                         strcpy(key, com_token);
1656                 while (key[strlen(key)-1] == ' ') // remove trailing spaces
1657                         key[strlen(key)-1] = 0;
1658                 if (!COM_ParseToken(&data, false))
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                                                         strcpy(wadname, "textures/");
1681                                                         strcat(wadname, &value[j]);
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_ParseToken(&data, false))
2507                 return; // error
2508         submodel = 0;
2509         for (;;)
2510         {
2511                 if (!COM_ParseToken(&data, false))
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_ParseToken(&data, false))
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_ParseToken(&data, false))
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_ParseToken(&data, false);
2556                                                 for (componentnum = 0;componentnum < 3;componentnum++)
2557                                                 {
2558                                                         COM_ParseToken(&data, false);
2559                                                         point[pointnum][componentnum] = atof(com_token);
2560                                                 }
2561                                                 COM_ParseToken(&data, false);
2562                                         }
2563                                         COM_ParseToken(&data, false);
2564                                         strlcpy(facetexture, com_token, sizeof(facetexture));
2565                                         COM_ParseToken(&data, false);
2566                                         //scroll_s = atof(com_token);
2567                                         COM_ParseToken(&data, false);
2568                                         //scroll_t = atof(com_token);
2569                                         COM_ParseToken(&data, false);
2570                                         //rotate = atof(com_token);
2571                                         COM_ParseToken(&data, false);
2572                                         //scale_s = atof(com_token);
2573                                         COM_ParseToken(&data, false);
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 static void Mod_Q1BSP_RecursiveNodePortals(mnode_t *node)
2836 {
2837         int i, side;
2838         mnode_t *front, *back, *other_node;
2839         mplane_t clipplane, *plane;
2840         portal_t *portal, *nextportal, *nodeportal, *splitportal, *temp;
2841         int numfrontpoints, numbackpoints;
2842         double frontpoints[3*MAX_PORTALPOINTS], backpoints[3*MAX_PORTALPOINTS];
2843
2844         // if a leaf, we're done
2845         if (!node->plane)
2846                 return;
2847
2848         plane = node->plane;
2849
2850         front = node->children[0];
2851         back = node->children[1];
2852         if (front == back)
2853                 Host_Error("Mod_Q1BSP_RecursiveNodePortals: corrupt node hierarchy");
2854
2855         // create the new portal by generating a polygon for the node plane,
2856         // and clipping it by all of the other portals(which came from nodes above this one)
2857         nodeportal = AllocPortal();
2858         nodeportal->plane = *plane;
2859
2860         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);
2861         nodeportal->numpoints = 4;
2862         side = 0;       // shut up compiler warning
2863         for (portal = (portal_t *)node->portals;portal;portal = portal->next[side])
2864         {
2865                 clipplane = portal->plane;
2866                 if (portal->nodes[0] == portal->nodes[1])
2867                         Host_Error("Mod_Q1BSP_RecursiveNodePortals: portal has same node on both sides(1)");
2868                 if (portal->nodes[0] == node)
2869                         side = 0;
2870                 else if (portal->nodes[1] == node)
2871                 {
2872                         clipplane.dist = -clipplane.dist;
2873                         VectorNegate(clipplane.normal, clipplane.normal);
2874                         side = 1;
2875                 }
2876                 else
2877                         Host_Error("Mod_Q1BSP_RecursiveNodePortals: mislinked portal");
2878
2879                 for (i = 0;i < nodeportal->numpoints*3;i++)
2880                         frontpoints[i] = nodeportal->points[i];
2881                 PolygonD_Divide(nodeportal->numpoints, frontpoints, clipplane.normal[0], clipplane.normal[1], clipplane.normal[2], clipplane.dist, 1.0/32.0, MAX_PORTALPOINTS, nodeportal->points, &nodeportal->numpoints, 0, NULL, NULL, NULL);
2882                 if (nodeportal->numpoints <= 0 || nodeportal->numpoints >= MAX_PORTALPOINTS)
2883                         break;
2884         }
2885
2886         if (nodeportal->numpoints < 3)
2887         {
2888                 Con_Print("Mod_Q1BSP_RecursiveNodePortals: WARNING: new portal was clipped away\n");
2889                 nodeportal->numpoints = 0;
2890         }
2891         else if (nodeportal->numpoints >= MAX_PORTALPOINTS)
2892         {
2893                 Con_Print("Mod_Q1BSP_RecursiveNodePortals: WARNING: new portal has too many points\n");
2894                 nodeportal->numpoints = 0;
2895         }
2896
2897         AddPortalToNodes(nodeportal, front, back);
2898
2899         // split the portals of this node along this node's plane and assign them to the children of this node
2900         // (migrating the portals downward through the tree)
2901         for (portal = (portal_t *)node->portals;portal;portal = nextportal)
2902         {
2903                 if (portal->nodes[0] == portal->nodes[1])
2904                         Host_Error("Mod_Q1BSP_RecursiveNodePortals: portal has same node on both sides(2)");
2905                 if (portal->nodes[0] == node)
2906                         side = 0;
2907                 else if (portal->nodes[1] == node)
2908                         side = 1;
2909                 else
2910                         Host_Error("Mod_Q1BSP_RecursiveNodePortals: mislinked portal");
2911                 nextportal = portal->next[side];
2912                 if (!portal->numpoints)
2913                         continue;
2914
2915                 other_node = portal->nodes[!side];
2916                 RemovePortalFromNodes(portal);
2917
2918                 // cut the portal into two portals, one on each side of the node plane
2919                 PolygonD_Divide(portal->numpoints, portal->points, plane->normal[0], plane->normal[1], plane->normal[2], plane->dist, 1.0/32.0, MAX_PORTALPOINTS, frontpoints, &numfrontpoints, MAX_PORTALPOINTS, backpoints, &numbackpoints, NULL);
2920
2921                 if (!numfrontpoints)
2922                 {
2923                         if (side == 0)
2924                                 AddPortalToNodes(portal, back, other_node);
2925                         else
2926                                 AddPortalToNodes(portal, other_node, back);
2927                         continue;
2928                 }
2929                 if (!numbackpoints)
2930                 {
2931                         if (side == 0)
2932                                 AddPortalToNodes(portal, front, other_node);
2933                         else
2934                                 AddPortalToNodes(portal, other_node, front);
2935                         continue;
2936                 }
2937
2938                 // the portal is split
2939                 splitportal = AllocPortal();
2940                 temp = splitportal->chain;
2941                 *splitportal = *portal;
2942                 splitportal->chain = temp;
2943                 for (i = 0;i < numbackpoints*3;i++)
2944                         splitportal->points[i] = backpoints[i];
2945                 splitportal->numpoints = numbackpoints;
2946                 for (i = 0;i < numfrontpoints*3;i++)
2947                         portal->points[i] = frontpoints[i];
2948                 portal->numpoints = numfrontpoints;
2949
2950                 if (side == 0)
2951                 {
2952                         AddPortalToNodes(portal, front, other_node);
2953                         AddPortalToNodes(splitportal, back, other_node);
2954                 }
2955                 else
2956                 {
2957                         AddPortalToNodes(portal, other_node, front);
2958                         AddPortalToNodes(splitportal, other_node, back);
2959                 }
2960         }
2961
2962         Mod_Q1BSP_RecursiveNodePortals(front);
2963         Mod_Q1BSP_RecursiveNodePortals(back);
2964 }
2965
2966 static void Mod_Q1BSP_MakePortals(void)
2967 {
2968         portalchain = NULL;
2969         Mod_Q1BSP_RecursiveNodePortals(loadmodel->brush.data_nodes);
2970         Mod_Q1BSP_FinalizePortals();
2971 }
2972
2973 static void Mod_Q1BSP_BuildLightmapUpdateChains(mempool_t *mempool, model_t *model)
2974 {
2975         int i, j, stylecounts[256], totalcount, remapstyles[256];
2976         msurface_t *surface;
2977         memset(stylecounts, 0, sizeof(stylecounts));
2978         for (i = 0;i < model->nummodelsurfaces;i++)
2979         {
2980                 surface = model->data_surfaces + model->firstmodelsurface + i;
2981                 for (j = 0;j < MAXLIGHTMAPS;j++)
2982                         stylecounts[surface->lightmapinfo->styles[j]]++;
2983         }
2984         totalcount = 0;
2985         model->brushq1.light_styles = 0;
2986         for (i = 0;i < 255;i++)
2987         {
2988                 if (stylecounts[i])
2989                 {
2990                         remapstyles[i] = model->brushq1.light_styles++;
2991                         totalcount += stylecounts[i] + 1;
2992                 }
2993         }
2994         if (!totalcount)
2995                 return;
2996         model->brushq1.light_style = (unsigned char *)Mem_Alloc(mempool, model->brushq1.light_styles * sizeof(unsigned char));
2997         model->brushq1.light_stylevalue = (int *)Mem_Alloc(mempool, model->brushq1.light_styles * sizeof(int));
2998         model->brushq1.light_styleupdatechains = (msurface_t ***)Mem_Alloc(mempool, model->brushq1.light_styles * sizeof(msurface_t **));
2999         model->brushq1.light_styleupdatechainsbuffer = (msurface_t **)Mem_Alloc(mempool, totalcount * sizeof(msurface_t *));
3000         model->brushq1.light_styles = 0;
3001         for (i = 0;i < 255;i++)
3002                 if (stylecounts[i])
3003                         model->brushq1.light_style[model->brushq1.light_styles++] = i;
3004         j = 0;
3005         for (i = 0;i < model->brushq1.light_styles;i++)
3006         {
3007                 model->brushq1.light_styleupdatechains[i] = model->brushq1.light_styleupdatechainsbuffer + j;
3008                 j += stylecounts[model->brushq1.light_style[i]] + 1;
3009         }
3010         for (i = 0;i < model->nummodelsurfaces;i++)
3011         {
3012                 surface = model->data_surfaces + model->firstmodelsurface + i;
3013                 for (j = 0;j < MAXLIGHTMAPS;j++)
3014                         if (surface->lightmapinfo->styles[j] != 255)
3015                                 *model->brushq1.light_styleupdatechains[remapstyles[surface->lightmapinfo->styles[j]]]++ = surface;
3016         }
3017         j = 0;
3018         for (i = 0;i < model->brushq1.light_styles;i++)
3019         {
3020                 *model->brushq1.light_styleupdatechains[i] = NULL;
3021                 model->brushq1.light_styleupdatechains[i] = model->brushq1.light_styleupdatechainsbuffer + j;
3022                 j += stylecounts[model->brushq1.light_style[i]] + 1;
3023         }
3024 }
3025
3026 //Returns PVS data for a given point
3027 //(note: can return NULL)
3028 static unsigned char *Mod_Q1BSP_GetPVS(model_t *model, const vec3_t p)
3029 {
3030         mnode_t *node;
3031         node = model->brush.data_nodes;
3032         while (node->plane)
3033                 node = node->children[(node->plane->type < 3 ? p[node->plane->type] : DotProduct(p,node->plane->normal)) < node->plane->dist];
3034         if (((mleaf_t *)node)->clusterindex >= 0)
3035                 return model->brush.data_pvsclusters + ((mleaf_t *)node)->clusterindex * model->brush.num_pvsclusterbytes;
3036         else
3037                 return NULL;
3038 }
3039
3040 static void Mod_Q1BSP_FatPVS_RecursiveBSPNode(model_t *model, const vec3_t org, vec_t radius, unsigned char *pvsbuffer, int pvsbytes, mnode_t *node)
3041 {
3042         while (node->plane)
3043         {
3044                 float d = PlaneDiff(org, node->plane);
3045                 if (d > radius)
3046                         node = node->children[0];
3047                 else if (d < -radius)
3048                         node = node->children[1];
3049                 else
3050                 {
3051                         // go down both sides
3052                         Mod_Q1BSP_FatPVS_RecursiveBSPNode(model, org, radius, pvsbuffer, pvsbytes, node->children[0]);
3053                         node = node->children[1];
3054                 }
3055         }
3056         // if this leaf is in a cluster, accumulate the pvs bits
3057         if (((mleaf_t *)node)->clusterindex >= 0)
3058         {
3059                 int i;
3060                 unsigned char *pvs = model->brush.data_pvsclusters + ((mleaf_t *)node)->clusterindex * model->brush.num_pvsclusterbytes;
3061                 for (i = 0;i < pvsbytes;i++)
3062                         pvsbuffer[i] |= pvs[i];
3063         }
3064 }
3065
3066 //Calculates a PVS that is the inclusive or of all leafs within radius pixels
3067 //of the given point.
3068 static int Mod_Q1BSP_FatPVS(model_t *model, const vec3_t org, vec_t radius, unsigned char *pvsbuffer, int pvsbufferlength)
3069 {
3070         int bytes = model->brush.num_pvsclusterbytes;
3071         bytes = min(bytes, pvsbufferlength);
3072         if (r_novis.integer || !model->brush.num_pvsclusters || !Mod_Q1BSP_GetPVS(model, org))
3073         {
3074                 memset(pvsbuffer, 0xFF, bytes);
3075                 return bytes;
3076         }
3077         memset(pvsbuffer, 0, bytes);
3078         Mod_Q1BSP_FatPVS_RecursiveBSPNode(model, org, radius, pvsbuffer, bytes, model->brush.data_nodes);
3079         return bytes;
3080 }
3081
3082 static void Mod_Q1BSP_RoundUpToHullSize(model_t *cmodel, const vec3_t inmins, const vec3_t inmaxs, vec3_t outmins, vec3_t outmaxs)
3083 {
3084         vec3_t size;
3085         const hull_t *hull;
3086
3087         VectorSubtract(inmaxs, inmins, size);
3088         if (cmodel->brush.ismcbsp)
3089         {
3090                 if (size[0] < 3)
3091                         hull = &cmodel->brushq1.hulls[0]; // 0x0x0
3092                 else if (size[2] < 48) // pick the nearest of 40 or 56
3093                         hull = &cmodel->brushq1.hulls[2]; // 16x16x40
3094                 else
3095                         hull = &cmodel->brushq1.hulls[1]; // 16x16x56
3096         }
3097         else if (cmodel->brush.ishlbsp)
3098         {
3099                 if (size[0] < 3)
3100                         hull = &cmodel->brushq1.hulls[0]; // 0x0x0
3101                 else if (size[0] <= 32)
3102                 {
3103                         if (size[2] < 54) // pick the nearest of 36 or 72
3104                                 hull = &cmodel->brushq1.hulls[3]; // 32x32x36
3105                         else
3106                                 hull = &cmodel->brushq1.hulls[1]; // 32x32x72
3107                 }
3108                 else
3109                         hull = &cmodel->brushq1.hulls[2]; // 64x64x64
3110         }
3111         else
3112         {
3113                 if (size[0] < 3)
3114                         hull = &cmodel->brushq1.hulls[0]; // 0x0x0
3115                 else if (size[0] <= 32)
3116                         hull = &cmodel->brushq1.hulls[1]; // 32x32x56
3117                 else
3118                         hull = &cmodel->brushq1.hulls[2]; // 64x64x88
3119         }
3120         VectorCopy(inmins, outmins);
3121         VectorAdd(inmins, hull->clip_size, outmaxs);
3122 }
3123
3124 void Mod_Q1BSP_Load(model_t *mod, void *buffer, void *bufferend)
3125 {
3126         int i, j, k;
3127         dheader_t *header;
3128         dmodel_t *bm;
3129         mempool_t *mainmempool;
3130         float dist, modelyawradius, modelradius, *vec;
3131         msurface_t *surface;
3132         int numshadowmeshtriangles;
3133         dheader_t _header;
3134         hullinfo_t hullinfo;
3135
3136         mod->type = mod_brushq1;
3137
3138         if (!memcmp (buffer, "MCBSPpad", 8))
3139         {
3140                 unsigned char   *index;
3141
3142                 mod->brush.ismcbsp = true;
3143                 mod->brush.ishlbsp = false;
3144
3145                 mod_base = (unsigned char*)buffer;
3146
3147                 index = mod_base;
3148                 index += 8;
3149                 i = SB_ReadInt (&index);
3150                 if (i != MCBSPVERSION)
3151                         Host_Error("Mod_Q1BSP_Load: %s has wrong version number(%i should be %i)", mod->name, i, MCBSPVERSION);
3152
3153         // read hull info
3154                 hullinfo.numhulls = LittleLong(*(int*)index); index += 4;
3155                 hullinfo.filehulls = hullinfo.numhulls;
3156                 VectorClear (hullinfo.hullsizes[0][0]);
3157                 VectorClear (hullinfo.hullsizes[0][1]);
3158                 for (i = 1; i < hullinfo.numhulls; i++)
3159                 {
3160                         hullinfo.hullsizes[i][0][0] = SB_ReadFloat (&index);
3161                         hullinfo.hullsizes[i][0][1] = SB_ReadFloat (&index);
3162                         hullinfo.hullsizes[i][0][2] = SB_ReadFloat (&index);
3163                         hullinfo.hullsizes[i][1][0] = SB_ReadFloat (&index);
3164                         hullinfo.hullsizes[i][1][1] = SB_ReadFloat (&index);
3165                         hullinfo.hullsizes[i][1][2] = SB_ReadFloat (&index);
3166                 }
3167
3168         // read lumps
3169                 _header.version = 0;
3170                 for (i = 0; i < HEADER_LUMPS; i++)
3171                 {
3172                         _header.lumps[i].fileofs = SB_ReadInt (&index);
3173                         _header.lumps[i].filelen = SB_ReadInt (&index);
3174                 }
3175
3176                 header = &_header;
3177         }
3178         else
3179         {
3180                 header = (dheader_t *)buffer;
3181
3182                 i = LittleLong(header->version);
3183                 if (i != BSPVERSION && i != 30)
3184                         Host_Error("Mod_Q1BSP_Load: %s has wrong version number(%i should be %i(Quake) or 30(HalfLife)", mod->name, i, BSPVERSION);
3185                 mod->brush.ishlbsp = i == 30;
3186                 mod->brush.ismcbsp = false;
3187
3188         // fill in hull info
3189                 VectorClear (hullinfo.hullsizes[0][0]);
3190                 VectorClear (hullinfo.hullsizes[0][1]);
3191                 if (mod->brush.ishlbsp)
3192                 {
3193                         hullinfo.numhulls = 4;
3194                         hullinfo.filehulls = 4;
3195                         VectorSet (hullinfo.hullsizes[1][0], -16, -16, -36);
3196                         VectorSet (hullinfo.hullsizes[1][1], 16, 16, 36);
3197                         VectorSet (hullinfo.hullsizes[2][0], -32, -32, -32);
3198                         VectorSet (hullinfo.hullsizes[2][1], 32, 32, 32);
3199                         VectorSet (hullinfo.hullsizes[3][0], -16, -16, -18);
3200                         VectorSet (hullinfo.hullsizes[3][1], 16, 16, 18);
3201                 }
3202                 else
3203                 {
3204                         hullinfo.numhulls = 3;
3205                         hullinfo.filehulls = 4;
3206                         VectorSet (hullinfo.hullsizes[1][0], -16, -16, -24);
3207                         VectorSet (hullinfo.hullsizes[1][1], 16, 16, 32);
3208                         VectorSet (hullinfo.hullsizes[2][0], -32, -32, -24);
3209                         VectorSet (hullinfo.hullsizes[2][1], 32, 32, 64);
3210                 }
3211
3212         // read lumps
3213                 mod_base = (unsigned char*)buffer;
3214                 for (i = 0; i < HEADER_LUMPS; i++)
3215                 {
3216                         header->lumps[i].fileofs = LittleLong(header->lumps[i].fileofs);
3217                         header->lumps[i].filelen = LittleLong(header->lumps[i].filelen);
3218                 }
3219         }
3220
3221         mod->soundfromcenter = true;
3222         mod->TraceBox = Mod_Q1BSP_TraceBox;
3223         mod->brush.SuperContentsFromNativeContents = Mod_Q1BSP_SuperContentsFromNativeContents;
3224         mod->brush.NativeContentsFromSuperContents = Mod_Q1BSP_NativeContentsFromSuperContents;
3225         mod->brush.GetPVS = Mod_Q1BSP_GetPVS;
3226         mod->brush.FatPVS = Mod_Q1BSP_FatPVS;
3227         mod->brush.BoxTouchingPVS = Mod_Q1BSP_BoxTouchingPVS;
3228         mod->brush.BoxTouchingLeafPVS = Mod_Q1BSP_BoxTouchingLeafPVS;
3229         mod->brush.BoxTouchingVisibleLeafs = Mod_Q1BSP_BoxTouchingVisibleLeafs;
3230         mod->brush.FindBoxClusters = Mod_Q1BSP_FindBoxClusters;
3231         mod->brush.LightPoint = Mod_Q1BSP_LightPoint;
3232         mod->brush.FindNonSolidLocation = Mod_Q1BSP_FindNonSolidLocation;
3233         mod->brush.AmbientSoundLevelsForPoint = Mod_Q1BSP_AmbientSoundLevelsForPoint;
3234         mod->brush.RoundUpToHullSize = Mod_Q1BSP_RoundUpToHullSize;
3235         mod->brush.PointInLeaf = Mod_Q1BSP_PointInLeaf;
3236
3237         if (loadmodel->isworldmodel)
3238         {
3239                 Cvar_SetValue("halflifebsp", mod->brush.ishlbsp);
3240                 Cvar_SetValue("mcbsp", mod->brush.ismcbsp);
3241         }
3242
3243 // load into heap
3244
3245         // store which lightmap format to use
3246         mod->brushq1.lightmaprgba = r_lightmaprgba.integer;
3247
3248         mod->brush.qw_md4sum = 0;
3249         mod->brush.qw_md4sum2 = 0;
3250         for (i = 0;i < HEADER_LUMPS;i++)
3251         {
3252                 if (i == LUMP_ENTITIES)
3253                         continue;
3254                 mod->brush.qw_md4sum ^= LittleLong(Com_BlockChecksum(mod_base + header->lumps[i].fileofs, header->lumps[i].filelen));
3255                 if (i == LUMP_VISIBILITY || i == LUMP_LEAFS || i == LUMP_NODES)
3256                         continue;
3257                 mod->brush.qw_md4sum2 ^= LittleLong(Com_BlockChecksum(mod_base + header->lumps[i].fileofs, header->lumps[i].filelen));
3258         }
3259
3260         Mod_Q1BSP_LoadEntities(&header->lumps[LUMP_ENTITIES]);
3261         Mod_Q1BSP_LoadVertexes(&header->lumps[LUMP_VERTEXES]);
3262         Mod_Q1BSP_LoadEdges(&header->lumps[LUMP_EDGES]);
3263         Mod_Q1BSP_LoadSurfedges(&header->lumps[LUMP_SURFEDGES]);
3264         Mod_Q1BSP_LoadTextures(&header->lumps[LUMP_TEXTURES]);
3265         Mod_Q1BSP_LoadLighting(&header->lumps[LUMP_LIGHTING]);
3266         Mod_Q1BSP_LoadPlanes(&header->lumps[LUMP_PLANES]);
3267         Mod_Q1BSP_LoadTexinfo(&header->lumps[LUMP_TEXINFO]);
3268         Mod_Q1BSP_LoadFaces(&header->lumps[LUMP_FACES]);
3269         Mod_Q1BSP_LoadLeaffaces(&header->lumps[LUMP_MARKSURFACES]);
3270         Mod_Q1BSP_LoadVisibility(&header->lumps[LUMP_VISIBILITY]);
3271         // load submodels before leafs because they contain the number of vis leafs
3272         Mod_Q1BSP_LoadSubmodels(&header->lumps[LUMP_MODELS], &hullinfo);
3273         Mod_Q1BSP_LoadLeafs(&header->lumps[LUMP_LEAFS]);
3274         Mod_Q1BSP_LoadNodes(&header->lumps[LUMP_NODES]);
3275         Mod_Q1BSP_LoadClipnodes(&header->lumps[LUMP_CLIPNODES], &hullinfo);
3276
3277         if (!mod->brushq1.lightdata)
3278                 mod->brush.LightPoint = NULL;
3279
3280         if (mod->brushq1.data_compressedpvs)
3281                 Mem_Free(mod->brushq1.data_compressedpvs);
3282         mod->brushq1.data_compressedpvs = NULL;
3283         mod->brushq1.num_compressedpvs = 0;
3284
3285         Mod_Q1BSP_MakeHull0();
3286         Mod_Q1BSP_MakePortals();
3287
3288         mod->numframes = 2;             // regular and alternate animation
3289         mod->numskins = 1;
3290
3291         mainmempool = mod->mempool;
3292
3293         // make a single combined shadow mesh to allow optimized shadow volume creation
3294         numshadowmeshtriangles = 0;
3295         for (j = 0, surface = loadmodel->data_surfaces;j < loadmodel->num_surfaces;j++, surface++)
3296         {
3297                 surface->num_firstshadowmeshtriangle = numshadowmeshtriangles;
3298                 numshadowmeshtriangles += surface->num_triangles;
3299         }
3300         loadmodel->brush.shadowmesh = Mod_ShadowMesh_Begin(loadmodel->mempool, numshadowmeshtriangles * 3, numshadowmeshtriangles, NULL, NULL, NULL, false, false, true);
3301         for (j = 0, surface = loadmodel->data_surfaces;j < loadmodel->num_surfaces;j++, surface++)
3302                 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));
3303         loadmodel->brush.shadowmesh = Mod_ShadowMesh_Finish(loadmodel->mempool, loadmodel->brush.shadowmesh, false, true);
3304         Mod_BuildTriangleNeighbors(loadmodel->brush.shadowmesh->neighbor3i, loadmodel->brush.shadowmesh->element3i, loadmodel->brush.shadowmesh->numtriangles);
3305
3306         if (loadmodel->brush.numsubmodels)
3307                 loadmodel->brush.submodels = (model_t **)Mem_Alloc(loadmodel->mempool, loadmodel->brush.numsubmodels * sizeof(model_t *));
3308
3309         if (loadmodel->isworldmodel)
3310         {
3311                 // clear out any stale submodels or worldmodels lying around
3312                 // if we did this clear before now, an error might abort loading and
3313                 // leave things in a bad state
3314                 Mod_RemoveStaleWorldModels(loadmodel);
3315         }
3316
3317         // LordHavoc: to clear the fog around the original quake submodel code, I
3318         // will explain:
3319         // first of all, some background info on the submodels:
3320         // model 0 is the map model (the world, named maps/e1m1.bsp for example)
3321         // model 1 and higher are submodels (doors and the like, named *1, *2, etc)
3322         // now the weird for loop itself:
3323         // the loop functions in an odd way, on each iteration it sets up the
3324         // current 'mod' model (which despite the confusing code IS the model of
3325         // the number i), at the end of the loop it duplicates the model to become
3326         // the next submodel, and loops back to set up the new submodel.
3327
3328         // LordHavoc: now the explanation of my sane way (which works identically):
3329         // set up the world model, then on each submodel copy from the world model
3330         // and set up the submodel with the respective model info.
3331         for (i = 0;i < mod->brush.numsubmodels;i++)
3332         {
3333                 // LordHavoc: this code was originally at the end of this loop, but
3334                 // has been transformed to something more readable at the start here.
3335
3336                 if (i > 0)
3337                 {
3338                         char name[10];
3339                         // LordHavoc: only register submodels if it is the world
3340                         // (prevents external bsp models from replacing world submodels with
3341                         //  their own)
3342                         if (!loadmodel->isworldmodel)
3343                                 continue;
3344                         // duplicate the basic information
3345                         sprintf(name, "*%i", i);
3346                         mod = Mod_FindName(name);
3347                         // copy the base model to this one
3348                         *mod = *loadmodel;
3349                         // rename the clone back to its proper name
3350                         strcpy(mod->name, name);
3351                         // textures and memory belong to the main model
3352                         mod->texturepool = NULL;
3353                         mod->mempool = NULL;
3354                 }
3355
3356                 mod->brush.submodel = i;
3357
3358                 if (loadmodel->brush.submodels)
3359                         loadmodel->brush.submodels[i] = mod;
3360
3361                 bm = &mod->brushq1.submodels[i];
3362
3363                 mod->brushq1.hulls[0].firstclipnode = bm->headnode[0];
3364                 for (j=1 ; j<MAX_MAP_HULLS ; j++)
3365                 {
3366                         mod->brushq1.hulls[j].firstclipnode = bm->headnode[j];
3367                         mod->brushq1.hulls[j].lastclipnode = mod->brushq1.numclipnodes - 1;
3368                 }
3369
3370                 mod->firstmodelsurface = bm->firstface;
3371                 mod->nummodelsurfaces = bm->numfaces;
3372
3373                 // make the model surface list (used by shadowing/lighting)
3374                 mod->surfacelist = (int *)Mem_Alloc(loadmodel->mempool, mod->nummodelsurfaces * sizeof(*mod->surfacelist));
3375                 for (j = 0;j < mod->nummodelsurfaces;j++)
3376                         mod->surfacelist[j] = mod->firstmodelsurface + j;
3377
3378                 // this gets altered below if sky is used
3379                 mod->DrawSky = NULL;
3380                 mod->Draw = R_Q1BSP_Draw;
3381                 mod->GetLightInfo = R_Q1BSP_GetLightInfo;
3382                 mod->CompileShadowVolume = R_Q1BSP_CompileShadowVolume;
3383                 mod->DrawShadowVolume = R_Q1BSP_DrawShadowVolume;
3384                 mod->DrawLight = R_Q1BSP_DrawLight;
3385                 if (i != 0)
3386                 {
3387                         mod->brush.GetPVS = NULL;
3388                         mod->brush.FatPVS = NULL;
3389                         mod->brush.BoxTouchingPVS = NULL;
3390                         mod->brush.BoxTouchingLeafPVS = NULL;
3391                         mod->brush.BoxTouchingVisibleLeafs = NULL;
3392                         mod->brush.FindBoxClusters = NULL;
3393                         mod->brush.LightPoint = NULL;
3394                         mod->brush.AmbientSoundLevelsForPoint = NULL;
3395                 }
3396                 Mod_Q1BSP_BuildLightmapUpdateChains(loadmodel->mempool, mod);
3397                 if (mod->nummodelsurfaces)
3398                 {
3399                         // LordHavoc: calculate bmodel bounding box rather than trusting what it says
3400                         mod->normalmins[0] = mod->normalmins[1] = mod->normalmins[2] = 1000000000.0f;
3401                         mod->normalmaxs[0] = mod->normalmaxs[1] = mod->normalmaxs[2] = -1000000000.0f;
3402                         modelyawradius = 0;
3403                         modelradius = 0;
3404                         for (j = 0, surface = &mod->data_surfaces[mod->firstmodelsurface];j < mod->nummodelsurfaces;j++, surface++)
3405                         {
3406                                 // we only need to have a drawsky function if it is used(usually only on world model)
3407                                 if (surface->texture->basematerialflags & MATERIALFLAG_SKY)
3408                                         mod->DrawSky = R_Q1BSP_DrawSky;
3409                                 // calculate bounding shapes
3410                                 for (k = 0, vec = (loadmodel->surfmesh.data_vertex3f + 3 * surface->num_firstvertex);k < surface->num_vertices;k++, vec += 3)
3411                                 {
3412                                         if (mod->normalmins[0] > vec[0]) mod->normalmins[0] = vec[0];
3413                                         if (mod->normalmins[1] > vec[1]) mod->normalmins[1] = vec[1];
3414                                         if (mod->normalmins[2] > vec[2]) mod->normalmins[2] = vec[2];
3415                                         if (mod->normalmaxs[0] < vec[0]) mod->normalmaxs[0] = vec[0];
3416                                         if (mod->normalmaxs[1] < vec[1]) mod->normalmaxs[1] = vec[1];
3417                                         if (mod->normalmaxs[2] < vec[2]) mod->normalmaxs[2] = vec[2];
3418                                         dist = vec[0]*vec[0]+vec[1]*vec[1];
3419                                         if (modelyawradius < dist)
3420                                                 modelyawradius = dist;
3421                                         dist += vec[2]*vec[2];
3422                                         if (modelradius < dist)
3423                                                 modelradius = dist;
3424                                 }
3425                         }
3426                         modelyawradius = sqrt(modelyawradius);
3427                         modelradius = sqrt(modelradius);
3428                         mod->yawmins[0] = mod->yawmins[1] = - (mod->yawmaxs[0] = mod->yawmaxs[1] = modelyawradius);
3429                         mod->yawmins[2] = mod->normalmins[2];
3430                         mod->yawmaxs[2] = mod->normalmaxs[2];
3431                         mod->rotatedmins[0] = mod->rotatedmins[1] = mod->rotatedmins[2] = -modelradius;
3432                         mod->rotatedmaxs[0] = mod->rotatedmaxs[1] = mod->rotatedmaxs[2] = modelradius;
3433                         mod->radius = modelradius;
3434                         mod->radius2 = modelradius * modelradius;
3435                 }
3436                 else
3437                 {
3438                         // LordHavoc: empty submodel(lacrima.bsp has such a glitch)
3439                         Con_Printf("warning: empty submodel *%i in %s\n", i+1, loadmodel->name);
3440                 }
3441                 //mod->brushq1.num_visleafs = bm->visleafs;
3442         }
3443
3444         Mod_Q1BSP_LoadMapBrushes();
3445
3446         //Mod_Q1BSP_ProcessLightList();
3447
3448         if (developer.integer >= 10)
3449                 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);
3450 }
3451
3452 static void Mod_Q2BSP_LoadEntities(lump_t *l)
3453 {
3454 }
3455
3456 static void Mod_Q2BSP_LoadPlanes(lump_t *l)
3457 {
3458 /*
3459         d_t *in;
3460         m_t *out;
3461         int i, count;
3462
3463         in = (void *)(mod_base + l->fileofs);
3464         if (l->filelen % sizeof(*in))
3465                 Host_Error("Mod_Q2BSP_LoadPlanes: funny lump size in %s",loadmodel->name);
3466         count = l->filelen / sizeof(*in);
3467         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
3468
3469         loadmodel-> = out;
3470         loadmodel->num = count;
3471
3472         for (i = 0;i < count;i++, in++, out++)
3473         {
3474         }
3475 */
3476 }
3477
3478 static void Mod_Q2BSP_LoadVertices(lump_t *l)
3479 {
3480 /*
3481         d_t *in;
3482         m_t *out;
3483         int i, count;
3484
3485         in = (void *)(mod_base + l->fileofs);
3486         if (l->filelen % sizeof(*in))
3487                 Host_Error("Mod_Q2BSP_LoadVertices: funny lump size in %s",loadmodel->name);
3488         count = l->filelen / sizeof(*in);
3489         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
3490
3491         loadmodel-> = out;
3492         loadmodel->num = count;
3493
3494         for (i = 0;i < count;i++, in++, out++)
3495         {
3496         }
3497 */
3498 }
3499
3500 static void Mod_Q2BSP_LoadVisibility(lump_t *l)
3501 {
3502 /*
3503         d_t *in;
3504         m_t *out;
3505         int i, count;
3506
3507         in = (void *)(mod_base + l->fileofs);
3508         if (l->filelen % sizeof(*in))
3509                 Host_Error("Mod_Q2BSP_LoadVisibility: funny lump size in %s",loadmodel->name);
3510         count = l->filelen / sizeof(*in);
3511         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
3512
3513         loadmodel-> = out;
3514         loadmodel->num = count;
3515
3516         for (i = 0;i < count;i++, in++, out++)
3517         {
3518         }
3519 */
3520 }
3521
3522 static void Mod_Q2BSP_LoadNodes(lump_t *l)
3523 {
3524 /*
3525         d_t *in;
3526         m_t *out;
3527         int i, count;
3528
3529         in = (void *)(mod_base + l->fileofs);
3530         if (l->filelen % sizeof(*in))
3531                 Host_Error("Mod_Q2BSP_LoadNodes: funny lump size in %s",loadmodel->name);
3532         count = l->filelen / sizeof(*in);
3533         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
3534
3535         loadmodel-> = out;
3536         loadmodel->num = count;
3537
3538         for (i = 0;i < count;i++, in++, out++)
3539         {
3540         }
3541 */
3542 }
3543
3544 static void Mod_Q2BSP_LoadTexInfo(lump_t *l)
3545 {
3546 /*
3547         d_t *in;
3548         m_t *out;
3549         int i, count;
3550
3551         in = (void *)(mod_base + l->fileofs);
3552         if (l->filelen % sizeof(*in))
3553                 Host_Error("Mod_Q2BSP_LoadTexInfo: funny lump size in %s",loadmodel->name);
3554         count = l->filelen / sizeof(*in);
3555         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
3556
3557         loadmodel-> = out;
3558         loadmodel->num = count;
3559
3560         for (i = 0;i < count;i++, in++, out++)
3561         {
3562         }
3563 */
3564 }
3565
3566 static void Mod_Q2BSP_LoadFaces(lump_t *l)
3567 {
3568 /*
3569         d_t *in;
3570         m_t *out;
3571         int i, count;
3572
3573         in = (void *)(mod_base + l->fileofs);
3574         if (l->filelen % sizeof(*in))
3575                 Host_Error("Mod_Q2BSP_LoadFaces: funny lump size in %s",loadmodel->name);
3576         count = l->filelen / sizeof(*in);
3577         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
3578
3579         loadmodel-> = out;
3580         loadmodel->num = count;
3581
3582         for (i = 0;i < count;i++, in++, out++)
3583         {
3584         }
3585 */
3586 }
3587
3588 static void Mod_Q2BSP_LoadLighting(lump_t *l)
3589 {
3590 /*
3591         d_t *in;
3592         m_t *out;
3593         int i, count;
3594
3595         in = (void *)(mod_base + l->fileofs);
3596         if (l->filelen % sizeof(*in))
3597                 Host_Error("Mod_Q2BSP_LoadLighting: funny lump size in %s",loadmodel->name);
3598         count = l->filelen / sizeof(*in);
3599         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
3600
3601         loadmodel-> = out;
3602         loadmodel->num = count;
3603
3604         for (i = 0;i < count;i++, in++, out++)
3605         {
3606         }
3607 */
3608 }
3609
3610 static void Mod_Q2BSP_LoadLeafs(lump_t *l)
3611 {
3612 /*
3613         d_t *in;
3614         m_t *out;
3615         int i, count;
3616
3617         in = (void *)(mod_base + l->fileofs);
3618         if (l->filelen % sizeof(*in))
3619                 Host_Error("Mod_Q2BSP_LoadLeafs: funny lump size in %s",loadmodel->name);
3620         count = l->filelen / sizeof(*in);
3621         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
3622
3623         loadmodel-> = out;
3624         loadmodel->num = count;
3625
3626         for (i = 0;i < count;i++, in++, out++)
3627         {
3628         }
3629 */
3630 }
3631
3632 static void Mod_Q2BSP_LoadLeafFaces(lump_t *l)
3633 {
3634 /*
3635         d_t *in;
3636         m_t *out;
3637         int i, count;
3638
3639         in = (void *)(mod_base + l->fileofs);
3640         if (l->filelen % sizeof(*in))
3641                 Host_Error("Mod_Q2BSP_LoadLeafFaces: funny lump size in %s",loadmodel->name);
3642         count = l->filelen / sizeof(*in);
3643         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
3644
3645         loadmodel-> = out;
3646         loadmodel->num = count;
3647
3648         for (i = 0;i < count;i++, in++, out++)
3649         {
3650         }
3651 */
3652 }
3653
3654 static void Mod_Q2BSP_LoadLeafBrushes(lump_t *l)
3655 {
3656 /*
3657         d_t *in;
3658         m_t *out;
3659         int i, count;
3660
3661         in = (void *)(mod_base + l->fileofs);
3662         if (l->filelen % sizeof(*in))
3663                 Host_Error("Mod_Q2BSP_LoadLeafBrushes: funny lump size in %s",loadmodel->name);
3664         count = l->filelen / sizeof(*in);
3665         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
3666
3667         loadmodel-> = out;
3668         loadmodel->num = count;
3669
3670         for (i = 0;i < count;i++, in++, out++)
3671         {
3672         }
3673 */
3674 }
3675
3676 static void Mod_Q2BSP_LoadEdges(lump_t *l)
3677 {
3678 /*
3679         d_t *in;
3680         m_t *out;
3681         int i, count;
3682
3683         in = (void *)(mod_base + l->fileofs);
3684         if (l->filelen % sizeof(*in))
3685                 Host_Error("Mod_Q2BSP_LoadEdges: funny lump size in %s",loadmodel->name);
3686         count = l->filelen / sizeof(*in);
3687         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
3688
3689         loadmodel-> = out;
3690         loadmodel->num = count;
3691
3692         for (i = 0;i < count;i++, in++, out++)
3693         {
3694         }
3695 */
3696 }
3697
3698 static void Mod_Q2BSP_LoadSurfEdges(lump_t *l)
3699 {
3700 /*
3701         d_t *in;
3702         m_t *out;
3703         int i, count;
3704
3705         in = (void *)(mod_base + l->fileofs);
3706         if (l->filelen % sizeof(*in))
3707                 Host_Error("Mod_Q2BSP_LoadSurfEdges: funny lump size in %s",loadmodel->name);
3708         count = l->filelen / sizeof(*in);
3709         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
3710
3711         loadmodel-> = out;
3712         loadmodel->num = count;
3713
3714         for (i = 0;i < count;i++, in++, out++)
3715         {
3716         }
3717 */
3718 }
3719
3720 static void Mod_Q2BSP_LoadBrushes(lump_t *l)
3721 {
3722 /*
3723         d_t *in;
3724         m_t *out;
3725         int i, count;
3726
3727         in = (void *)(mod_base + l->fileofs);
3728         if (l->filelen % sizeof(*in))
3729                 Host_Error("Mod_Q2BSP_LoadBrushes: funny lump size in %s",loadmodel->name);
3730         count = l->filelen / sizeof(*in);
3731         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
3732
3733         loadmodel-> = out;
3734         loadmodel->num = count;
3735
3736         for (i = 0;i < count;i++, in++, out++)
3737         {
3738         }
3739 */
3740 }
3741
3742 static void Mod_Q2BSP_LoadBrushSides(lump_t *l)
3743 {
3744 /*
3745         d_t *in;
3746         m_t *out;
3747         int i, count;
3748
3749         in = (void *)(mod_base + l->fileofs);
3750         if (l->filelen % sizeof(*in))
3751                 Host_Error("Mod_Q2BSP_LoadBrushSides: funny lump size in %s",loadmodel->name);
3752         count = l->filelen / sizeof(*in);
3753         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
3754
3755         loadmodel-> = out;
3756         loadmodel->num = count;
3757
3758         for (i = 0;i < count;i++, in++, out++)
3759         {
3760         }
3761 */
3762 }
3763
3764 static void Mod_Q2BSP_LoadAreas(lump_t *l)
3765 {
3766 /*
3767         d_t *in;
3768         m_t *out;
3769         int i, count;
3770
3771         in = (void *)(mod_base + l->fileofs);
3772         if (l->filelen % sizeof(*in))
3773                 Host_Error("Mod_Q2BSP_LoadAreas: funny lump size in %s",loadmodel->name);
3774         count = l->filelen / sizeof(*in);
3775         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
3776
3777         loadmodel-> = out;
3778         loadmodel->num = count;
3779
3780         for (i = 0;i < count;i++, in++, out++)
3781         {
3782         }
3783 */
3784 }
3785
3786 static void Mod_Q2BSP_LoadAreaPortals(lump_t *l)
3787 {
3788 /*
3789         d_t *in;
3790         m_t *out;
3791         int i, count;
3792
3793         in = (void *)(mod_base + l->fileofs);
3794         if (l->filelen % sizeof(*in))
3795                 Host_Error("Mod_Q2BSP_LoadAreaPortals: funny lump size in %s",loadmodel->name);
3796         count = l->filelen / sizeof(*in);
3797         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
3798
3799         loadmodel-> = out;
3800         loadmodel->num = count;
3801
3802         for (i = 0;i < count;i++, in++, out++)
3803         {
3804         }
3805 */
3806 }
3807
3808 static void Mod_Q2BSP_LoadModels(lump_t *l)
3809 {
3810 /*
3811         d_t *in;
3812         m_t *out;
3813         int i, count;
3814
3815         in = (void *)(mod_base + l->fileofs);
3816         if (l->filelen % sizeof(*in))
3817                 Host_Error("Mod_Q2BSP_LoadModels: funny lump size in %s",loadmodel->name);
3818         count = l->filelen / sizeof(*in);
3819         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
3820
3821         loadmodel-> = out;
3822         loadmodel->num = count;
3823
3824         for (i = 0;i < count;i++, in++, out++)
3825         {
3826         }
3827 */
3828 }
3829
3830 void static Mod_Q2BSP_Load(model_t *mod, void *buffer, void *bufferend)
3831 {
3832         int i;
3833         q2dheader_t *header;
3834
3835         Host_Error("Mod_Q2BSP_Load: not yet implemented");
3836
3837         mod->type = mod_brushq2;
3838
3839         header = (q2dheader_t *)buffer;
3840
3841         i = LittleLong(header->version);
3842         if (i != Q2BSPVERSION)
3843                 Host_Error("Mod_Q2BSP_Load: %s has wrong version number (%i, should be %i)", mod->name, i, Q2BSPVERSION);
3844         mod->brush.ishlbsp = false;
3845         mod->brush.ismcbsp = false;
3846         if (loadmodel->isworldmodel)
3847         {
3848                 Cvar_SetValue("halflifebsp", mod->brush.ishlbsp);
3849                 Cvar_SetValue("mcbsp", mod->brush.ismcbsp);
3850         }
3851
3852         mod_base = (unsigned char *)header;
3853
3854         // swap all the lumps
3855         for (i = 0;i < (int) sizeof(*header) / 4;i++)
3856                 ((int *)header)[i] = LittleLong(((int *)header)[i]);
3857
3858         // store which lightmap format to use
3859         mod->brushq1.lightmaprgba = r_lightmaprgba.integer;
3860
3861         mod->brush.qw_md4sum = 0;
3862         mod->brush.qw_md4sum2 = 0;
3863         for (i = 0;i < Q2HEADER_LUMPS;i++)
3864         {
3865                 if (i == Q2LUMP_ENTITIES)
3866                         continue;
3867                 mod->brush.qw_md4sum ^= Com_BlockChecksum(mod_base + header->lumps[i].fileofs, header->lumps[i].filelen);
3868                 if (i == Q2LUMP_VISIBILITY || i == Q2LUMP_LEAFS || i == Q2LUMP_NODES)
3869                         continue;
3870                 mod->brush.qw_md4sum2 ^= Com_BlockChecksum(mod_base + header->lumps[i].fileofs, header->lumps[i].filelen);
3871         }
3872
3873         Mod_Q2BSP_LoadEntities(&header->lumps[Q2LUMP_ENTITIES]);
3874         Mod_Q2BSP_LoadPlanes(&header->lumps[Q2LUMP_PLANES]);
3875         Mod_Q2BSP_LoadVertices(&header->lumps[Q2LUMP_VERTEXES]);
3876         Mod_Q2BSP_LoadVisibility(&header->lumps[Q2LUMP_VISIBILITY]);
3877         Mod_Q2BSP_LoadNodes(&header->lumps[Q2LUMP_NODES]);
3878         Mod_Q2BSP_LoadTexInfo(&header->lumps[Q2LUMP_TEXINFO]);
3879         Mod_Q2BSP_LoadFaces(&header->lumps[Q2LUMP_FACES]);
3880         Mod_Q2BSP_LoadLighting(&header->lumps[Q2LUMP_LIGHTING]);
3881         Mod_Q2BSP_LoadLeafs(&header->lumps[Q2LUMP_LEAFS]);
3882         Mod_Q2BSP_LoadLeafFaces(&header->lumps[Q2LUMP_LEAFFACES]);
3883         Mod_Q2BSP_LoadLeafBrushes(&header->lumps[Q2LUMP_LEAFBRUSHES]);
3884         Mod_Q2BSP_LoadEdges(&header->lumps[Q2LUMP_EDGES]);
3885         Mod_Q2BSP_LoadSurfEdges(&header->lumps[Q2LUMP_SURFEDGES]);
3886         Mod_Q2BSP_LoadBrushes(&header->lumps[Q2LUMP_BRUSHES]);
3887         Mod_Q2BSP_LoadBrushSides(&header->lumps[Q2LUMP_BRUSHSIDES]);
3888         Mod_Q2BSP_LoadAreas(&header->lumps[Q2LUMP_AREAS]);
3889         Mod_Q2BSP_LoadAreaPortals(&header->lumps[Q2LUMP_AREAPORTALS]);
3890         // LordHavoc: must go last because this makes the submodels
3891         Mod_Q2BSP_LoadModels(&header->lumps[Q2LUMP_MODELS]);
3892 }
3893
3894 static int Mod_Q3BSP_SuperContentsFromNativeContents(model_t *model, int nativecontents);
3895 static int Mod_Q3BSP_NativeContentsFromSuperContents(model_t *model, int supercontents);
3896
3897 static void Mod_Q3BSP_LoadEntities(lump_t *l)
3898 {
3899         const char *data;
3900         char key[128], value[MAX_INPUTLINE];
3901         float v[3];
3902         loadmodel->brushq3.num_lightgrid_cellsize[0] = 64;
3903         loadmodel->brushq3.num_lightgrid_cellsize[1] = 64;
3904         loadmodel->brushq3.num_lightgrid_cellsize[2] = 128;
3905         if (!l->filelen)
3906                 return;
3907         loadmodel->brush.entities = (char *)Mem_Alloc(loadmodel->mempool, l->filelen);
3908         memcpy(loadmodel->brush.entities, mod_base + l->fileofs, l->filelen);
3909         data = loadmodel->brush.entities;
3910         // some Q3 maps override the lightgrid_cellsize with a worldspawn key
3911         if (data && COM_ParseToken(&data, false) && com_token[0] == '{')
3912         {
3913                 while (1)
3914                 {
3915                         if (!COM_ParseToken(&data, false))
3916                                 break; // error
3917                         if (com_token[0] == '}')
3918                                 break; // end of worldspawn
3919                         if (com_token[0] == '_')
3920                                 strcpy(key, com_token + 1);
3921                         else
3922                                 strcpy(key, com_token);
3923                         while (key[strlen(key)-1] == ' ') // remove trailing spaces
3924                                 key[strlen(key)-1] = 0;
3925                         if (!COM_ParseToken(&data, false))
3926                                 break; // error
3927                         strcpy(value, com_token);
3928                         if (!strcmp("gridsize", key))
3929                         {
3930                                 if (sscanf(value, "%f %f %f", &v[0], &v[1], &v[2]) == 3 && v[0] != 0 && v[1] != 0 && v[2] != 0)
3931                                         VectorCopy(v, loadmodel->brushq3.num_lightgrid_cellsize);
3932                         }
3933                 }
3934         }
3935 }
3936
3937 // FIXME: make MAXSHADERS dynamic
3938 #define Q3SHADER_MAXSHADERS 4096
3939 #define Q3SHADER_MAXLAYERS 8
3940
3941 typedef struct q3shaderinfo_layer_s
3942 {
3943         char texturename[Q3PATHLENGTH];
3944         int blendfunc[2];
3945         qboolean rgbgenvertex;
3946         qboolean alphagenvertex;
3947 }
3948 q3shaderinfo_layer_t;
3949
3950 typedef struct q3shaderinfo_s
3951 {
3952         char name[Q3PATHLENGTH];
3953         int surfaceparms;
3954         int textureflags;
3955         int numlayers;
3956         qboolean lighting;
3957         qboolean vertexalpha;
3958         qboolean textureblendalpha;
3959         q3shaderinfo_layer_t *primarylayer, *backgroundlayer;
3960         q3shaderinfo_layer_t layers[Q3SHADER_MAXLAYERS];
3961         char skyboxname[Q3PATHLENGTH];
3962 }
3963 q3shaderinfo_t;
3964
3965 int q3shaders_numshaders;
3966 q3shaderinfo_t q3shaders_shaders[Q3SHADER_MAXSHADERS];
3967
3968 static void Mod_Q3BSP_LoadShaders(void)
3969 {
3970         int j;
3971         int fileindex;
3972         fssearch_t *search;
3973         char *f;
3974         const char *text;
3975         q3shaderinfo_t *shader;
3976         q3shaderinfo_layer_t *layer;
3977         int numparameters;
3978         char parameter[4][Q3PATHLENGTH];
3979         search = FS_Search("scripts/*.shader", true, false);
3980         if (!search)
3981                 return;
3982         q3shaders_numshaders = 0;
3983         for (fileindex = 0;fileindex < search->numfilenames;fileindex++)
3984         {
3985                 text = f = (char *)FS_LoadFile(search->filenames[fileindex], tempmempool, false, NULL);
3986                 if (!f)
3987                         continue;
3988                 while (COM_ParseToken(&text, false))
3989                 {
3990                         if (q3shaders_numshaders >= Q3SHADER_MAXSHADERS)
3991                         {
3992                                 Con_Printf("Mod_Q3BSP_LoadShaders: too many shaders!\n");
3993                                 break;
3994                         }
3995                         shader = q3shaders_shaders + q3shaders_numshaders++;
3996                         memset(shader, 0, sizeof(*shader));
3997                         strlcpy(shader->name, com_token, sizeof(shader->name));
3998                         if (!COM_ParseToken(&text, false) || strcasecmp(com_token, "{"))
3999                         {
4000                                 Con_Printf("%s parsing error - expected \"{\", found \"%s\"\n", search->filenames[fileindex], com_token);
4001                                 break;
4002                         }
4003                         while (COM_ParseToken(&text, false))
4004                         {
4005                                 if (!strcasecmp(com_token, "}"))
4006                                         break;
4007                                 if (!strcasecmp(com_token, "{"))
4008                                 {
4009                                         if (shader->numlayers < Q3SHADER_MAXLAYERS)
4010                                         {
4011                                                 layer = shader->layers + shader->numlayers++;
4012                                                 layer->rgbgenvertex = false;
4013                                                 layer->alphagenvertex = false;
4014                                                 layer->blendfunc[0] = GL_ONE;
4015                                                 layer->blendfunc[1] = GL_ZERO;
4016                                         }
4017                                         else
4018                                                 layer = NULL;
4019                                         while (COM_ParseToken(&text, false))
4020                                         {
4021                                                 if (!strcasecmp(com_token, "}"))
4022                                                         break;
4023                                                 if (!strcasecmp(com_token, "\n"))
4024                                                         continue;
4025                                                 if (layer == NULL)
4026                                                         continue;
4027                                                 numparameters = 0;
4028                                                 for (j = 0;strcasecmp(com_token, "\n") && strcasecmp(com_token, "}");j++)
4029                                                 {
4030                                                         if (j < 4)
4031                                                         {
4032                                                                 strlcpy(parameter[j], com_token, sizeof(parameter[j]));
4033                                                                 numparameters = j + 1;
4034                                                         }
4035                                                         if (!COM_ParseToken(&text, true))
4036                                                                 break;
4037                                                 }
4038                                                 if (developer.integer >= 100)
4039                                                 {
4040                                                         Con_Printf("%s %i: ", shader->name, shader->numlayers - 1);
4041                                                         for (j = 0;j < numparameters;j++)
4042                                                                 Con_Printf(" %s", parameter[j]);
4043                                                         Con_Print("\n");
4044                                                 }
4045                                                 if (numparameters >= 2 && !strcasecmp(parameter[0], "blendfunc"))
4046                                                 {
4047                                                         if (numparameters == 2)
4048                                                         {
4049                                                                 if (!strcasecmp(parameter[1], "add"))
4050                                                                 {
4051                                                                         layer->blendfunc[0] = GL_ONE;
4052                                                                         layer->blendfunc[1] = GL_ONE;
4053                                                                 }
4054                                                                 else if (!strcasecmp(parameter[1], "filter"))
4055                                                                 {
4056                                                                         layer->blendfunc[0] = GL_DST_COLOR;
4057                                                                         layer->blendfunc[1] = GL_ZERO;
4058                                                                 }
4059                                                                 else if (!strcasecmp(parameter[1], "blend"))
4060                                                                 {
4061                                                                         layer->blendfunc[0] = GL_SRC_ALPHA;
4062                                                                         layer->blendfunc[1] = GL_ONE_MINUS_SRC_ALPHA;
4063                                                                 }
4064                                                         }
4065                                                         else if (numparameters == 3)
4066                                                         {
4067                                                                 int k;
4068                                                                 for (k = 0;k < 2;k++)
4069                                                                 {
4070                                                                         if (!strcasecmp(parameter[k+1], "GL_ONE"))
4071                                                                                 layer->blendfunc[k] = GL_ONE;
4072                                                                         else if (!strcasecmp(parameter[k+1], "GL_ZERO"))
4073                                                                                 layer->blendfunc[k] = GL_ZERO;
4074                                                                         else if (!strcasecmp(parameter[k+1], "GL_SRC_COLOR"))
4075                                                                                 layer->blendfunc[k] = GL_SRC_COLOR;
4076                                                                         else if (!strcasecmp(parameter[k+1], "GL_SRC_ALPHA"))
4077                                                                                 layer->blendfunc[k] = GL_SRC_ALPHA;
4078                                                                         else if (!strcasecmp(parameter[k+1], "GL_DST_COLOR"))
4079                                                                                 layer->blendfunc[k] = GL_DST_COLOR;
4080                                                                         else if (!strcasecmp(parameter[k+1], "GL_DST_ALPHA"))
4081                                                                                 layer->blendfunc[k] = GL_ONE_MINUS_DST_ALPHA;
4082                                                                         else if (!strcasecmp(parameter[k+1], "GL_ONE_MINUS_SRC_COLOR"))
4083                                                                                 layer->blendfunc[k] = GL_ONE_MINUS_SRC_COLOR;
4084                                                                         else if (!strcasecmp(parameter[k+1], "GL_ONE_MINUS_SRC_ALPHA"))
4085                                                                                 layer->blendfunc[k] = GL_ONE_MINUS_SRC_ALPHA;
4086                                                                         else if (!strcasecmp(parameter[k+1], "GL_ONE_MINUS_DST_COLOR"))
4087                                                                                 layer->blendfunc[k] = GL_ONE_MINUS_DST_COLOR;
4088                                                                         else if (!strcasecmp(parameter[k+1], "GL_ONE_MINUS_DST_ALPHA"))
4089                                                                                 layer->blendfunc[k] = GL_ONE_MINUS_DST_ALPHA;
4090                                                                         else
4091                                                                                 layer->blendfunc[k] = GL_ONE; // default in case of parsing error
4092                                                                 }
4093                                                         }
4094                                                 }
4095                                                 if (layer == shader->layers + 0)
4096                                                 {
4097                                                         if (numparameters >= 2 && !strcasecmp(parameter[0], "alphafunc"))
4098                                                                 shader->textureflags |= Q3TEXTUREFLAG_ALPHATEST;
4099                                                 }
4100                                                 if (numparameters >= 2 && (!strcasecmp(parameter[0], "map") || !strcasecmp(parameter[0], "clampmap")))
4101                                                 {
4102                                                         strlcpy(layer->texturename, parameter[1], sizeof(layer->texturename));
4103                                                         if (!strcasecmp(parameter[1], "$lightmap"))
4104                                                                 shader->lighting = true;
4105                                                 }
4106                                                 else if (numparameters >= 3 && !strcasecmp(parameter[0], "animmap"))
4107                                                         strlcpy(layer->texturename, parameter[2], sizeof(layer->texturename));
4108                                                 else if (numparameters >= 2 && !strcasecmp(parameter[0], "rgbgen") && !strcasecmp(parameter[1], "vertex"))
4109                                                         layer->rgbgenvertex = true;
4110                                                 else if (numparameters >= 2 && !strcasecmp(parameter[0], "alphagen") && !strcasecmp(parameter[1], "vertex"))
4111                                                         layer->alphagenvertex = true;
4112                                                 // break out a level if it was }
4113                                                 if (!strcasecmp(com_token, "}"))
4114                                                         break;
4115                                         }
4116                                         if (layer->rgbgenvertex)
4117                                                 shader->lighting = true;
4118                                         if (layer->alphagenvertex)
4119                                         {
4120                                                 if (layer == shader->layers + 0)
4121                                                 {
4122                                                         // vertex controlled transparency
4123                                                         shader->vertexalpha = true;
4124                                                 }
4125                                                 else
4126                                                 {
4127                                                         // multilayer terrain shader or similar
4128                                                         shader->textureblendalpha = true;
4129                                                 }
4130                                         }
4131                                         continue;
4132                                 }
4133                                 numparameters = 0;
4134                                 for (j = 0;strcasecmp(com_token, "\n") && strcasecmp(com_token, "}");j++)
4135                                 {
4136                                         if (j < 4)
4137                                         {
4138                                                 strlcpy(parameter[j], com_token, sizeof(parameter[j]));
4139                                                 numparameters = j + 1;
4140                                         }
4141                                         if (!COM_ParseToken(&text, true))
4142                                                 break;
4143                                 }
4144                                 if (fileindex == 0 && !strcasecmp(com_token, "}"))
4145                                         break;
4146                                 if (developer.integer >= 100)
4147                                 {
4148                                         Con_Printf("%s: ", shader->name);
4149                                         for (j = 0;j < numparameters;j++)
4150                                                 Con_Printf(" %s", parameter[j]);
4151                                         Con_Print("\n");
4152                                 }
4153                                 if (numparameters < 1)
4154                                         continue;
4155                                 if (!strcasecmp(parameter[0], "surfaceparm") && numparameters >= 2)
4156                                 {
4157                                         if (!strcasecmp(parameter[1], "alphashadow"))
4158                                                 shader->surfaceparms |= Q3SURFACEPARM_ALPHASHADOW;
4159                                         else if (!strcasecmp(parameter[1], "areaportal"))
4160                                                 shader->surfaceparms |= Q3SURFACEPARM_AREAPORTAL;
4161                                         else if (!strcasecmp(parameter[1], "clusterportal"))
4162                                                 shader->surfaceparms |= Q3SURFACEPARM_CLUSTERPORTAL;
4163                                         else if (!strcasecmp(parameter[1], "detail"))
4164                                                 shader->surfaceparms |= Q3SURFACEPARM_DETAIL;
4165                                         else if (!strcasecmp(parameter[1], "donotenter"))
4166                                                 shader->surfaceparms |= Q3SURFACEPARM_DONOTENTER;
4167                                         else if (!strcasecmp(parameter[1], "fog"))
4168                                                 shader->surfaceparms |= Q3SURFACEPARM_FOG;
4169                                         else if (!strcasecmp(parameter[1], "lava"))
4170                                                 shader->surfaceparms |= Q3SURFACEPARM_LAVA;
4171                                         else if (!strcasecmp(parameter[1], "lightfilter"))
4172                                                 shader->surfaceparms |= Q3SURFACEPARM_LIGHTFILTER;
4173                                         else if (!strcasecmp(parameter[1], "metalsteps"))
4174                                                 shader->surfaceparms |= Q3SURFACEPARM_METALSTEPS;
4175                                         else if (!strcasecmp(parameter[1], "nodamage"))
4176                                                 shader->surfaceparms |= Q3SURFACEPARM_NODAMAGE;
4177                                         else if (!strcasecmp(parameter[1], "nodlight"))
4178                                                 shader->surfaceparms |= Q3SURFACEPARM_NODLIGHT;
4179                                         else if (!strcasecmp(parameter[1], "nodraw"))
4180                                                 shader->surfaceparms |= Q3SURFACEPARM_NODRAW;
4181                                         else if (!strcasecmp(parameter[1], "nodrop"))
4182                                                 shader->surfaceparms |= Q3SURFACEPARM_NODROP;
4183                                         else if (!strcasecmp(parameter[1], "noimpact"))
4184                                                 shader->surfaceparms |= Q3SURFACEPARM_NOIMPACT;
4185                                         else if (!strcasecmp(parameter[1], "nolightmap"))
4186                                                 shader->surfaceparms |= Q3SURFACEPARM_NOLIGHTMAP;
4187                                         else if (!strcasecmp(parameter[1], "nomarks"))
4188                                                 shader->surfaceparms |= Q3SURFACEPARM_NOMARKS;
4189                                         else if (!strcasecmp(parameter[1], "nomipmaps"))
4190                                                 shader->surfaceparms |= Q3SURFACEPARM_NOMIPMAPS;
4191                                         else if (!strcasecmp(parameter[1], "nonsolid"))
4192                                                 shader->surfaceparms |= Q3SURFACEPARM_NONSOLID;
4193                                         else if (!strcasecmp(parameter[1], "origin"))
4194                                                 shader->surfaceparms |= Q3SURFACEPARM_ORIGIN;
4195                                         else if (!strcasecmp(parameter[1], "playerclip"))
4196                                                 shader->surfaceparms |= Q3SURFACEPARM_PLAYERCLIP;
4197                                         else if (!strcasecmp(parameter[1], "sky"))
4198                                                 shader->surfaceparms |= Q3SURFACEPARM_SKY;
4199                                         else if (!strcasecmp(parameter[1], "slick"))
4200                                                 shader->surfaceparms |= Q3SURFACEPARM_SLICK;
4201                                         else if (!strcasecmp(parameter[1], "slime"))
4202                                                 shader->surfaceparms |= Q3SURFACEPARM_SLIME;
4203                                         else if (!strcasecmp(parameter[1], "structural"))
4204                                                 shader->surfaceparms |= Q3SURFACEPARM_STRUCTURAL;
4205                                         else if (!strcasecmp(parameter[1], "trans"))
4206                                                 shader->surfaceparms |= Q3SURFACEPARM_TRANS;
4207                                         else if (!strcasecmp(parameter[1], "water"))
4208                                                 shader->surfaceparms |= Q3SURFACEPARM_WATER;
4209                                         else if (!strcasecmp(parameter[1], "pointlight"))
4210                                                 shader->surfaceparms |= Q3SURFACEPARM_POINTLIGHT;
4211                                         else
4212                                                 Con_Printf("%s parsing warning: unknown surfaceparm \"%s\"\n", search->filenames[fileindex], parameter[1]);
4213                                 }
4214                                 else if (!strcasecmp(parameter[0], "sky") && numparameters >= 2)
4215                                 {
4216                                         // some q3 skies don't have the sky parm set
4217                                         shader->surfaceparms |= Q3SURFACEPARM_SKY;
4218                                         strlcpy(shader->skyboxname, parameter[1], sizeof(shader->skyboxname));
4219                                 }
4220                                 else if (!strcasecmp(parameter[0], "skyparms") && numparameters >= 2)
4221                                 {
4222                                         // some q3 skies don't have the sky parm set
4223                                         shader->surfaceparms |= Q3SURFACEPARM_SKY;
4224                                         if (!atoi(parameter[1]) && strcasecmp(parameter[1], "-"))
4225                                                 strlcpy(shader->skyboxname, parameter[1], sizeof(shader->skyboxname));
4226                                 }
4227                                 else if (!strcasecmp(parameter[0], "cull") && numparameters >= 2)
4228                                 {
4229                                         if (!strcasecmp(parameter[1], "disable") || !strcasecmp(parameter[1], "none") || !strcasecmp(parameter[1], "twosided"))
4230                                                 shader->textureflags |= Q3TEXTUREFLAG_TWOSIDED;
4231                                 }
4232                                 else if (!strcasecmp(parameter[0], "nomipmaps"))
4233                                         shader->surfaceparms |= Q3SURFACEPARM_NOMIPMAPS;
4234                                 else if (!strcasecmp(parameter[0], "nopicmip"))
4235                                         shader->textureflags |= Q3TEXTUREFLAG_NOPICMIP;
4236                                 else if (!strcasecmp(parameter[0], "deformvertexes") && numparameters >= 2)
4237                                 {
4238                                         if (!strcasecmp(parameter[1], "autosprite") && numparameters == 2)
4239                                                 shader->textureflags |= Q3TEXTUREFLAG_AUTOSPRITE;
4240                                         if (!strcasecmp(parameter[1], "autosprite2") && numparameters == 2)
4241                                                 shader->textureflags |= Q3TEXTUREFLAG_AUTOSPRITE2;
4242                                 }
4243                         }
4244                         // identify if this is a blended terrain shader or similar
4245                         if (shader->numlayers)
4246                         {
4247                                 shader->primarylayer = shader->layers + 0;
4248                                 if (shader->layers[1].blendfunc[0] == GL_SRC_ALPHA && shader->layers[1].blendfunc[1] == GL_ONE_MINUS_SRC_ALPHA)
4249                                 {
4250                                         // terrain blending or other effects
4251                                         shader->backgroundlayer = shader->layers + 0;
4252                                         shader->primarylayer = shader->layers + 1;
4253                                 }
4254                                 // now see if the lightmap came first, and if so choose the second texture instead
4255                                 if (!strcasecmp(shader->primarylayer->texturename, "$lightmap"))
4256                                         shader->primarylayer = shader->layers + 1;
4257                         }
4258                 }
4259                 Mem_Free(f);
4260         }
4261 }
4262
4263 q3shaderinfo_t *Mod_Q3BSP_LookupShader(const char *name)
4264 {
4265         int i;
4266         for (i = 0;i < Q3SHADER_MAXSHADERS;i++)
4267                 if (!strcasecmp(q3shaders_shaders[i].name, name))
4268                         return q3shaders_shaders + i;
4269         return NULL;
4270 }
4271
4272 static void Mod_Q3BSP_LoadTextures(lump_t *l)
4273 {
4274         q3dtexture_t *in;
4275         texture_t *out;
4276         int i, count, c;
4277
4278         in = (q3dtexture_t *)(mod_base + l->fileofs);
4279         if (l->filelen % sizeof(*in))
4280                 Host_Error("Mod_Q3BSP_LoadTextures: funny lump size in %s",loadmodel->name);
4281         count = l->filelen / sizeof(*in);
4282         out = (texture_t *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
4283
4284         loadmodel->data_textures = out;
4285         loadmodel->num_textures = count;
4286
4287         // parse the Q3 shader files
4288         Mod_Q3BSP_LoadShaders();
4289
4290         c = 0;
4291         for (i = 0;i < count;i++, in++, out++)
4292         {
4293                 q3shaderinfo_t *shader;
4294                 strlcpy (out->name, in->name, sizeof (out->name));
4295                 out->surfaceflags = LittleLong(in->surfaceflags);
4296                 out->supercontents = Mod_Q3BSP_SuperContentsFromNativeContents(loadmodel, LittleLong(in->contents));
4297                 shader = Mod_Q3BSP_LookupShader(out->name);
4298                 if (shader)
4299                 {
4300                         out->surfaceparms = shader->surfaceparms;
4301                         out->textureflags = shader->textureflags;
4302                         out->basematerialflags = 0;
4303                         if (shader->surfaceparms & Q3SURFACEPARM_SKY)
4304                         {
4305                                 out->basematerialflags |= MATERIALFLAG_SKY;
4306                                 if (shader->skyboxname[0])
4307                                 {
4308                                         // quake3 seems to append a _ to the skybox name, so this must do so as well
4309                                         dpsnprintf(loadmodel->brush.skybox, sizeof(loadmodel->brush.skybox), "%s_", shader->skyboxname);
4310                                 }
4311                         }
4312                         else if ((shader->surfaceparms & Q3SURFACEPARM_NODRAW) || shader->numlayers == 0)
4313                                 out->basematerialflags |= MATERIALFLAG_NODRAW;
4314                         else if (shader->surfaceparms & Q3SURFACEPARM_LAVA)
4315                                 out->basematerialflags |= MATERIALFLAG_WATER | MATERIALFLAG_FULLBRIGHT;
4316                         else if (shader->surfaceparms & Q3SURFACEPARM_SLIME)
4317                                 out->basematerialflags |= MATERIALFLAG_WATER | MATERIALFLAG_WATERALPHA;
4318                         else if (shader->surfaceparms & Q3SURFACEPARM_WATER)
4319                                 out->basematerialflags |= MATERIALFLAG_WATER | MATERIALFLAG_WATERALPHA;
4320                         else
4321                                 out->basematerialflags |= MATERIALFLAG_WALL;
4322                         if (shader->textureflags & Q3TEXTUREFLAG_ALPHATEST)
4323                                 out->basematerialflags |= MATERIALFLAG_ALPHATEST | MATERIALFLAG_TRANSPARENT;
4324                         out->customblendfunc[0] = GL_ONE;
4325                         out->customblendfunc[1] = GL_ZERO;
4326                         if (shader->numlayers > 0)
4327                         {
4328                                 out->customblendfunc[0] = shader->layers[0].blendfunc[0];
4329                                 out->customblendfunc[1] = shader->layers[0].blendfunc[1];
4330 /*
4331 Q3 shader blendfuncs actually used in the game (* = supported by DP)
4332 * additive               GL_ONE GL_ONE
4333   additive weird         GL_ONE GL_SRC_ALPHA
4334   additive weird 2       GL_ONE GL_ONE_MINUS_SRC_ALPHA
4335 * alpha                  GL_SRC_ALPHA GL_ONE_MINUS_SRC_ALPHA
4336   alpha inverse          GL_ONE_MINUS_SRC_ALPHA GL_SRC_ALPHA
4337   brighten               GL_DST_COLOR GL_ONE
4338   brighten               GL_ONE GL_SRC_COLOR
4339   brighten weird         GL_DST_COLOR GL_ONE_MINUS_DST_ALPHA
4340   brighten weird 2       GL_DST_COLOR GL_SRC_ALPHA
4341 * modulate               GL_DST_COLOR GL_ZERO
4342 * modulate               GL_ZERO GL_SRC_COLOR
4343   modulate inverse       GL_ZERO GL_ONE_MINUS_SRC_COLOR
4344   modulate inverse alpha GL_ZERO GL_SRC_ALPHA
4345   modulate weird inverse GL_ONE_MINUS_DST_COLOR GL_ZERO
4346 * modulate x2            GL_DST_COLOR GL_SRC_COLOR
4347 * no blend               GL_ONE GL_ZERO
4348   nothing                GL_ZERO GL_ONE
4349 */
4350                                 // if not opaque, figure out what blendfunc to use
4351                                 if (shader->layers[0].blendfunc[0] != GL_ONE || shader->layers[0].blendfunc[1] != GL_ZERO)
4352                                 {
4353                                         if (shader->layers[0].blendfunc[0] == GL_ONE && shader->layers[0].blendfunc[1] == GL_ONE)
4354                                                 out->basematerialflags |= MATERIALFLAG_ADD | MATERIALFLAG_BLENDED | MATERIALFLAG_TRANSPARENT;
4355                                         else if (shader->layers[0].blendfunc[0] == GL_SRC_ALPHA && shader->layers[0].blendfunc[1] == GL_ONE)
4356                                                 out->basematerialflags |= MATERIALFLAG_ADD | MATERIALFLAG_BLENDED | MATERIALFLAG_TRANSPARENT;
4357                                         else if (shader->layers[0].blendfunc[0] == GL_SRC_ALPHA && shader->layers[0].blendfunc[1] == GL_ONE_MINUS_SRC_ALPHA)
4358                                                 out->basematerialflags |= MATERIALFLAG_ALPHA | MATERIALFLAG_BLENDED | MATERIALFLAG_TRANSPARENT;
4359                                         else
4360                                                 out->basematerialflags |= MATERIALFLAG_CUSTOMBLEND | MATERIALFLAG_FULLBRIGHT | MATERIALFLAG_BLENDED | MATERIALFLAG_TRANSPARENT;
4361                                 }
4362                         }
4363                         if (!shader->lighting)
4364                                 out->basematerialflags |= MATERIALFLAG_FULLBRIGHT;
4365                         if (cls.state != ca_dedicated)
4366                                 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))
4367                                         Con_Printf("%s: could not load texture \"%s\" for shader \"%s\"\n", loadmodel->name, shader->primarylayer->texturename, out->name);
4368                 }
4369                 else
4370                 {
4371                         c++;
4372                         Con_DPrintf("%s: No shader found for texture \"%s\"\n", loadmodel->name, out->name);
4373                         out->surfaceparms = 0;
4374                         if (out->surfaceflags & Q3SURFACEFLAG_NODRAW)
4375                                 out->basematerialflags |= MATERIALFLAG_NODRAW;
4376                         else if (out->surfaceflags & Q3SURFACEFLAG_SKY)
4377                                 out->basematerialflags |= MATERIALFLAG_SKY;
4378                         else
4379                                 out->basematerialflags |= MATERIALFLAG_WALL;
4380                         // these are defaults
4381                         //if (!strncmp(out->name, "textures/skies/", 15))
4382                         //      out->surfaceparms |= Q3SURFACEPARM_SKY;
4383                         //if (!strcmp(out->name, "caulk") || !strcmp(out->name, "common/caulk") || !strcmp(out->name, "textures/common/caulk")
4384                         // || !strcmp(out->name, "nodraw") || !strcmp(out->name, "common/nodraw") || !strcmp(out->name, "textures/common/nodraw"))
4385                         //      out->surfaceparms |= Q3SURFACEPARM_NODRAW;
4386                         //if (R_TextureHasAlpha(out->skin.base))
4387                         //      out->surfaceparms |= Q3SURFACEPARM_TRANS;
4388                         if (cls.state != ca_dedicated)
4389                                 if (!Mod_LoadSkinFrame(&out->skin, out->name, TEXF_MIPMAP | TEXF_ALPHA | TEXF_PRECACHE | TEXF_PICMIP, false, true))
4390                                         Con_Printf("%s: could not load texture for missing shader \"%s\"\n", loadmodel->name, out->name);
4391                 }
4392                 // no animation
4393                 out->currentframe = out;
4394         }
4395         if (c)
4396                 Con_DPrintf("%s: %i textures missing shaders\n", loadmodel->name, c);
4397 }
4398
4399 static void Mod_Q3BSP_LoadPlanes(lump_t *l)
4400 {
4401         q3dplane_t *in;
4402         mplane_t *out;
4403         int i, count;
4404
4405         in = (q3dplane_t *)(mod_base + l->fileofs);
4406         if (l->filelen % sizeof(*in))
4407                 Host_Error("Mod_Q3BSP_LoadPlanes: funny lump size in %s",loadmodel->name);
4408         count = l->filelen / sizeof(*in);
4409         out = (mplane_t *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
4410
4411         loadmodel->brush.data_planes = out;
4412         loadmodel->brush.num_planes = count;
4413
4414         for (i = 0;i < count;i++, in++, out++)
4415         {
4416                 out->normal[0] = LittleFloat(in->normal[0]);
4417                 out->normal[1] = LittleFloat(in->normal[1]);
4418                 out->normal[2] = LittleFloat(in->normal[2]);
4419                 out->dist = LittleFloat(in->dist);
4420                 PlaneClassify(out);
4421         }
4422 }
4423
4424 static void Mod_Q3BSP_LoadBrushSides(lump_t *l)
4425 {
4426         q3dbrushside_t *in;
4427         q3mbrushside_t *out;
4428         int i, n, count;
4429
4430         in = (q3dbrushside_t *)(mod_base + l->fileofs);
4431         if (l->filelen % sizeof(*in))
4432                 Host_Error("Mod_Q3BSP_LoadBrushSides: funny lump size in %s",loadmodel->name);
4433         count = l->filelen / sizeof(*in);
4434         out = (q3mbrushside_t *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
4435
4436         loadmodel->brush.data_brushsides = out;
4437         loadmodel->brush.num_brushsides = count;
4438
4439         for (i = 0;i < count;i++, in++, out++)
4440         {
4441                 n = LittleLong(in->planeindex);
4442                 if (n < 0 || n >= loadmodel->brush.num_planes)
4443                         Host_Error("Mod_Q3BSP_LoadBrushSides: invalid planeindex %i (%i planes)", n, loadmodel->brush.num_planes);
4444                 out->plane = loadmodel->brush.data_planes + n;
4445                 n = LittleLong(in->textureindex);
4446                 if (n < 0 || n >= loadmodel->num_textures)
4447                         Host_Error("Mod_Q3BSP_LoadBrushSides: invalid textureindex %i (%i textures)", n, loadmodel->num_textures);
4448                 out->texture = loadmodel->data_textures + n;
4449         }
4450 }
4451
4452 static void Mod_Q3BSP_LoadBrushes(lump_t *l)
4453 {
4454         q3dbrush_t *in;
4455         q3mbrush_t *out;
4456         int i, j, n, c, count, maxplanes;
4457         colplanef_t *planes;
4458
4459         in = (q3dbrush_t *)(mod_base + l->fileofs);
4460         if (l->filelen % sizeof(*in))
4461                 Host_Error("Mod_Q3BSP_LoadBrushes: funny lump size in %s",loadmodel->name);
4462         count = l->filelen / sizeof(*in);
4463         out = (q3mbrush_t *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
4464
4465         loadmodel->brush.data_brushes = out;
4466         loadmodel->brush.num_brushes = count;
4467
4468         maxplanes = 0;
4469         planes = NULL;
4470
4471         for (i = 0;i < count;i++, in++, out++)
4472         {
4473                 n = LittleLong(in->firstbrushside);
4474                 c = LittleLong(in->numbrushsides);
4475                 if (n < 0 || n + c > loadmodel->brush.num_brushsides)
4476                         Host_Error("Mod_Q3BSP_LoadBrushes: invalid brushside range %i : %i (%i brushsides)", n, n + c, loadmodel->brush.num_brushsides);
4477                 out->firstbrushside = loadmodel->brush.data_brushsides + n;
4478                 out->numbrushsides = c;
4479                 n = LittleLong(in->textureindex);
4480                 if (n < 0 || n >= loadmodel->num_textures)
4481                         Host_Error("Mod_Q3BSP_LoadBrushes: invalid textureindex %i (%i textures)", n, loadmodel->num_textures);
4482                 out->texture = loadmodel->data_textures + n;
4483
4484                 // make a list of mplane_t structs to construct a colbrush from
4485                 if (maxplanes < out->numbrushsides)
4486                 {
4487                         maxplanes = out->numbrushsides;
4488                         if (planes)
4489                                 Mem_Free(planes);
4490                         planes = (colplanef_t *)Mem_Alloc(tempmempool, sizeof(colplanef_t) * maxplanes);
4491                 }
4492                 for (j = 0;j < out->numbrushsides;j++)
4493                 {
4494                         VectorCopy(out->firstbrushside[j].plane->normal, planes[j].normal);
4495                         planes[j].dist = out->firstbrushside[j].plane->dist;
4496                         planes[j].supercontents = out->firstbrushside[j].texture->supercontents;
4497                         planes[j].q3surfaceflags = out->firstbrushside[j].texture->surfaceflags;
4498                         planes[j].texture = out->firstbrushside[j].texture;
4499                 }
4500                 // make the colbrush from the planes
4501                 out->colbrushf = Collision_NewBrushFromPlanes(loadmodel->mempool, out->numbrushsides, planes);
4502         }
4503         if (planes)
4504                 Mem_Free(planes);
4505 }
4506
4507 static void Mod_Q3BSP_LoadEffects(lump_t *l)
4508 {
4509         q3deffect_t *in;
4510         q3deffect_t *out;
4511         int i, n, count;
4512
4513         in = (q3deffect_t *)(mod_base + l->fileofs);
4514         if (l->filelen % sizeof(*in))
4515                 Host_Error("Mod_Q3BSP_LoadEffects: funny lump size in %s",loadmodel->name);
4516         count = l->filelen / sizeof(*in);
4517         out = (q3deffect_t *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
4518
4519         loadmodel->brushq3.data_effects = out;
4520         loadmodel->brushq3.num_effects = count;
4521
4522         for (i = 0;i < count;i++, in++, out++)
4523         {
4524                 strlcpy (out->shadername, in->shadername, sizeof (out->shadername));
4525                 n = LittleLong(in->brushindex);
4526                 if (n >= loadmodel->brush.num_brushes)
4527                 {
4528                         Con_Printf("Mod_Q3BSP_LoadEffects: invalid brushindex %i (%i brushes), setting to -1\n", n, loadmodel->brush.num_brushes);
4529                         n = -1;
4530                 }
4531                 out->brushindex = n;
4532                 out->unknown = LittleLong(in->unknown);
4533         }
4534 }
4535
4536 static void Mod_Q3BSP_LoadVertices(lump_t *l)
4537 {
4538         q3dvertex_t *in;
4539         int i, count;
4540
4541         in = (q3dvertex_t *)(mod_base + l->fileofs);
4542         if (l->filelen % sizeof(*in))
4543                 Host_Error("Mod_Q3BSP_LoadVertices: funny lump size in %s",loadmodel->name);
4544         loadmodel->brushq3.num_vertices = count = l->filelen / sizeof(*in);
4545         loadmodel->brushq3.data_vertex3f = (float *)Mem_Alloc(loadmodel->mempool, count * (sizeof(float) * (3 + 3 + 2 + 2 + 4)));
4546         loadmodel->brushq3.data_normal3f = loadmodel->brushq3.data_vertex3f + count * 3;
4547         loadmodel->brushq3.data_texcoordtexture2f = loadmodel->brushq3.data_normal3f + count * 3;
4548         loadmodel->brushq3.data_texcoordlightmap2f = loadmodel->brushq3.data_texcoordtexture2f + count * 2;
4549         loadmodel->brushq3.data_color4f = loadmodel->brushq3.data_texcoordlightmap2f + count * 2;
4550
4551         for (i = 0;i < count;i++, in++)
4552         {
4553                 loadmodel->brushq3.data_vertex3f[i * 3 + 0] = LittleFloat(in->origin3f[0]);
4554                 loadmodel->brushq3.data_vertex3f[i * 3 + 1] = LittleFloat(in->origin3f[1]);
4555                 loadmodel->brushq3.data_vertex3f[i * 3 + 2] = LittleFloat(in->origin3f[2]);
4556                 loadmodel->brushq3.data_normal3f[i * 3 + 0] = LittleFloat(in->normal3f[0]);
4557                 loadmodel->brushq3.data_normal3f[i * 3 + 1] = LittleFloat(in->normal3f[1]);
4558                 loadmodel->brushq3.data_normal3f[i * 3 + 2] = LittleFloat(in->normal3f[2]);
4559                 loadmodel->brushq3.data_texcoordtexture2f[i * 2 + 0] = LittleFloat(in->texcoord2f[0]);
4560                 loadmodel->brushq3.data_texcoordtexture2f[i * 2 + 1] = LittleFloat(in->texcoord2f[1]);
4561                 loadmodel->brushq3.data_texcoordlightmap2f[i * 2 + 0] = LittleFloat(in->lightmap2f[0]);
4562                 loadmodel->brushq3.data_texcoordlightmap2f[i * 2 + 1] = LittleFloat(in->lightmap2f[1]);
4563                 // svector/tvector are calculated later in face loading
4564                 loadmodel->brushq3.data_color4f[i * 4 + 0] = in->color4ub[0] * (1.0f / 255.0f);
4565                 loadmodel->brushq3.data_color4f[i * 4 + 1] = in->color4ub[1] * (1.0f / 255.0f);
4566                 loadmodel->brushq3.data_color4f[i * 4 + 2] = in->color4ub[2] * (1.0f / 255.0f);
4567                 loadmodel->brushq3.data_color4f[i * 4 + 3] = in->color4ub[3] * (1.0f / 255.0f);
4568         }
4569 }
4570
4571 static void Mod_Q3BSP_LoadTriangles(lump_t *l)
4572 {
4573         int *in;
4574         int *out;
4575         int i, count;
4576
4577         in = (int *)(mod_base + l->fileofs);
4578         if (l->filelen % sizeof(int[3]))
4579                 Host_Error("Mod_Q3BSP_LoadTriangles: funny lump size in %s",loadmodel->name);
4580         count = l->filelen / sizeof(*in);
4581         out = (int *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
4582
4583         loadmodel->brushq3.num_triangles = count / 3;
4584         loadmodel->brushq3.data_element3i = out;
4585
4586         for (i = 0;i < count;i++, in++, out++)
4587         {
4588                 *out = LittleLong(*in);
4589                 if (*out < 0 || *out >= loadmodel->brushq3.num_vertices)
4590                 {
4591                         Con_Printf("Mod_Q3BSP_LoadTriangles: invalid vertexindex %i (%i vertices), setting to 0\n", *out, loadmodel->brushq3.num_vertices);
4592                         *out = 0;
4593                 }
4594         }
4595 }
4596
4597 static void Mod_Q3BSP_LoadLightmaps(lump_t *l)
4598 {
4599         q3dlightmap_t *in;
4600         rtexture_t **out;
4601         int i, count;
4602
4603         if (!l->filelen)
4604                 return;
4605         in = (q3dlightmap_t *)(mod_base + l->fileofs);
4606         if (l->filelen % sizeof(*in))
4607                 Host_Error("Mod_Q3BSP_LoadLightmaps: funny lump size in %s",loadmodel->name);
4608         count = l->filelen / sizeof(*in);
4609         out = (rtexture_t **)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
4610
4611         loadmodel->brushq3.data_lightmaps = out;
4612         loadmodel->brushq3.num_lightmaps = count;
4613
4614         for (i = 0;i < count;i++, in++, out++)
4615                 *out = R_LoadTexture2D(loadmodel->texturepool, va("lightmap%04i", i), 128, 128, in->rgb, TEXTYPE_RGB, TEXF_FORCELINEAR | TEXF_PRECACHE, NULL);
4616 }
4617
4618 static void Mod_Q3BSP_LoadFaces(lump_t *l)
4619 {
4620         q3dface_t *in, *oldin;
4621         msurface_t *out, *oldout;
4622         int i, oldi, j, n, count, invalidelements, patchsize[2], finalwidth, finalheight, xtess, ytess, finalvertices, finaltriangles, firstvertex, firstelement, type, oldnumtriangles, oldnumtriangles2, meshvertices, meshtriangles, numvertices, numtriangles;
4623         //int *originalelement3i;
4624         //int *originalneighbor3i;
4625         float *originalvertex3f;
4626         //float *originalsvector3f;
4627         //float *originaltvector3f;
4628         float *originalnormal3f;
4629         float *originalcolor4f;
4630         float *originaltexcoordtexture2f;
4631         float *originaltexcoordlightmap2f;
4632         float *v;
4633
4634         in = (q3dface_t *)(mod_base + l->fileofs);
4635         if (l->filelen % sizeof(*in))
4636                 Host_Error("Mod_Q3BSP_LoadFaces: funny lump size in %s",loadmodel->name);
4637         count = l->filelen / sizeof(*in);
4638         out = (msurface_t *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
4639
4640         loadmodel->data_surfaces = out;
4641         loadmodel->num_surfaces = count;
4642
4643         // deluxemapped q3bsp files have an even number of lightmaps, and surfaces
4644         // always index even numbered ones (0, 2, 4, ...), the odd numbered
4645         // lightmaps are the deluxemaps (light direction textures), so if we
4646         // encounter any odd numbered lightmaps it is not a deluxemapped bsp, it
4647         // is also not a deluxemapped bsp if it has an odd number of lightmaps or
4648         // less than 2
4649         loadmodel->brushq3.deluxemapping = true;
4650         loadmodel->brushq3.deluxemapping_modelspace = true;
4651         if (loadmodel->brushq3.num_lightmaps >= 2 && !(loadmodel->brushq3.num_lightmaps & 1))
4652         {
4653                 for (i = 0;i < count;i++)
4654                 {
4655                         n = LittleLong(in[i].lightmapindex);
4656                         if (n >= 0 && ((n & 1) || n + 1 >= loadmodel->brushq3.num_lightmaps))
4657                         {
4658                                 loadmodel->brushq3.deluxemapping = false;
4659                                 break;
4660                         }
4661                 }
4662         }
4663         else
4664                 loadmodel->brushq3.deluxemapping = false;
4665         Con_DPrintf("%s is %sdeluxemapped\n", loadmodel->name, loadmodel->brushq3.deluxemapping ? "" : "not ");
4666
4667         i = 0;
4668         oldi = i;
4669         oldin = in;
4670         oldout = out;
4671         meshvertices = 0;
4672         meshtriangles = 0;
4673         for (;i < count;i++, in++, out++)
4674         {
4675                 // check face type first
4676                 type = LittleLong(in->type);
4677                 if (type != Q3FACETYPE_POLYGON
4678                  && type != Q3FACETYPE_PATCH
4679                  && type != Q3FACETYPE_MESH
4680                  && type != Q3FACETYPE_FLARE)
4681                 {
4682                         Con_DPrintf("Mod_Q3BSP_LoadFaces: face #%i: unknown face type %i\n", i, type);
4683                         continue;
4684                 }
4685
4686                 n = LittleLong(in->textureindex);
4687                 if (n < 0 || n >= loadmodel->num_textures)
4688                 {
4689                         Con_DPrintf("Mod_Q3BSP_LoadFaces: face #%i: invalid textureindex %i (%i textures)\n", i, n, loadmodel->num_textures);
4690                         continue;
4691                 }
4692                 out->texture = loadmodel->data_textures + n;
4693                 n = LittleLong(in->effectindex);
4694                 if (n < -1 || n >= loadmodel->brushq3.num_effects)
4695                 {
4696                         if (developer.integer >= 100)
4697                                 Con_Printf("Mod_Q3BSP_LoadFaces: face #%i (texture \"%s\"): invalid effectindex %i (%i effects)\n", i, out->texture->name, n, loadmodel->brushq3.num_effects);
4698                         n = -1;
4699                 }
4700                 if (n == -1)
4701                         out->effect = NULL;
4702                 else
4703                         out->effect = loadmodel->brushq3.data_effects + n;
4704                 n = LittleLong(in->lightmapindex);
4705                 if (n >= loadmodel->brushq3.num_lightmaps)
4706                 {
4707                         Con_Printf("Mod_Q3BSP_LoadFaces: face #%i (texture \"%s\"): invalid lightmapindex %i (%i lightmaps)\n", i, out->texture->name, n, loadmodel->brushq3.num_lightmaps);
4708                         n = -1;
4709                 }
4710                 else if (n < 0)
4711                         n = -1;
4712                 if (n == -1)
4713                 {
4714                         out->lightmaptexture = NULL;
4715                         out->deluxemaptexture = r_texture_blanknormalmap;
4716                 }
4717                 else
4718                 {
4719                         out->lightmaptexture = loadmodel->brushq3.data_lightmaps[n];
4720                         if (loadmodel->brushq3.deluxemapping)
4721                                 out->deluxemaptexture = loadmodel->brushq3.data_lightmaps[n+1];
4722                         else
4723                                 out->deluxemaptexture = r_texture_blanknormalmap;
4724                 }
4725
4726                 firstvertex = LittleLong(in->firstvertex);
4727                 numvertices = LittleLong(in->numvertices);
4728                 firstelement = LittleLong(in->firstelement);
4729                 numtriangles = LittleLong(in->numelements) / 3;
4730                 if (numtriangles * 3 != LittleLong(in->numelements))
4731                 {
4732                         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));
4733                         continue;
4734                 }
4735                 if (firstvertex < 0 || firstvertex + numvertices > loadmodel->brushq3.num_vertices)
4736                 {
4737                         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);
4738                         continue;
4739                 }
4740                 if (firstelement < 0 || firstelement + numtriangles * 3 > loadmodel->brushq3.num_triangles * 3)
4741                 {
4742                         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);
4743                         continue;
4744                 }
4745                 switch(type)
4746                 {
4747                 case Q3FACETYPE_POLYGON:
4748                 case Q3FACETYPE_MESH:
4749                         // no processing necessary
4750                         break;
4751                 case Q3FACETYPE_PATCH:
4752                         patchsize[0] = LittleLong(in->specific.patch.patchsize[0]);
4753                         patchsize[1] = LittleLong(in->specific.patch.patchsize[1]);
4754                         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))
4755                         {
4756                                 Con_Printf("Mod_Q3BSP_LoadFaces: face #%i (texture \"%s\"): invalid patchsize %ix%i\n", i, out->texture->name, patchsize[0], patchsize[1]);
4757                                 continue;
4758                         }
4759                         originalvertex3f = loadmodel->brushq3.data_vertex3f + firstvertex * 3;
4760                         // convert patch to Q3FACETYPE_MESH
4761                         xtess = Q3PatchTesselationOnX(patchsize[0], patchsize[1], 3, originalvertex3f, r_subdivisions_tolerance.value);
4762                         ytess = Q3PatchTesselationOnY(patchsize[0], patchsize[1], 3, originalvertex3f, r_subdivisions_tolerance.value);
4763                         // bound to user settings
4764                         xtess = bound(r_subdivisions_mintess.integer, xtess, r_subdivisions_maxtess.integer);
4765                         ytess = bound(r_subdivisions_mintess.integer, ytess, r_subdivisions_maxtess.integer);
4766                         // bound to sanity settings
4767                         xtess = bound(1, xtess, 1024);
4768                         ytess = bound(1, ytess, 1024);
4769                         // bound to user limit on vertices
4770                         while ((xtess > 1 || ytess > 1) && (((patchsize[0] - 1) * xtess) + 1) * (((patchsize[1] - 1) * ytess) + 1) > min(r_subdivisions_maxvertices.integer, 262144))
4771                         {
4772                                 if (xtess > ytess)
4773                                         xtess--;
4774                                 else
4775                                         ytess--;
4776                         }
4777                         finalwidth = ((patchsize[0] - 1) * xtess) + 1;
4778                         finalheight = ((patchsize[1] - 1) * ytess) + 1;
4779                         numvertices = finalwidth * finalheight;
4780                         numtriangles = (finalwidth - 1) * (finalheight - 1) * 2;
4781                         break;
4782                 case Q3FACETYPE_FLARE:
4783                         if (developer.integer >= 100)
4784                                 Con_Printf("Mod_Q3BSP_LoadFaces: face #%i (texture \"%s\"): Q3FACETYPE_FLARE not supported (yet)\n", i, out->texture->name);
4785                         // don't render it
4786                         continue;
4787                 }
4788                 out->num_vertices = numvertices;
4789                 out->num_triangles = numtriangles;
4790                 meshvertices += out->num_vertices;
4791                 meshtriangles += out->num_triangles;
4792         }
4793
4794         i = oldi;
4795         in = oldin;
4796         out = oldout;
4797         Mod_AllocSurfMesh(loadmodel->mempool, meshvertices, meshtriangles, false, true, false);
4798         meshvertices = 0;
4799         meshtriangles = 0;
4800         for (;i < count && meshvertices + out->num_vertices <= loadmodel->surfmesh.num_vertices;i++, in++, out++)
4801         {
4802                 if (out->num_vertices < 3 || out->num_triangles < 1)
4803                         continue;
4804
4805                 type = LittleLong(in->type);
4806                 firstvertex = LittleLong(in->firstvertex);
4807                 firstelement = LittleLong(in->firstelement);
4808                 out->num_firstvertex = meshvertices;
4809                 out->num_firsttriangle = meshtriangles;
4810                 switch(type)
4811                 {
4812                 case Q3FACETYPE_POLYGON:
4813                 case Q3FACETYPE_MESH:
4814                         // no processing necessary
4815                         for (j = 0;j < out->num_vertices;j++)
4816                         {
4817                                 (loadmodel->surfmesh.data_vertex3f + 3 * out->num_firstvertex)[j * 3 + 0] = loadmodel->brushq3.data_vertex3f[(firstvertex + j) * 3 + 0];
4818                                 (loadmodel->surfmesh.data_vertex3f + 3 * out->num_firstvertex)[j * 3 + 1] = loadmodel->brushq3.data_vertex3f[(firstvertex + j) * 3 + 1];
4819                                 (loadmodel->surfmesh.data_vertex3f + 3 * out->num_firstvertex)[j * 3 + 2] = loadmodel->brushq3.data_vertex3f[(firstvertex + j) * 3 + 2];
4820                                 (loadmodel->surfmesh.data_normal3f + 3 * out->num_firstvertex)[j * 3 + 0] = loadmodel->brushq3.data_normal3f[(firstvertex + j) * 3 + 0];
4821                                 (loadmodel->surfmesh.data_normal3f + 3 * out->num_firstvertex)[j * 3 + 1] = loadmodel->brushq3.data_normal3f[(firstvertex + j) * 3 + 1];
4822                                 (loadmodel->surfmesh.data_normal3f + 3 * out->num_firstvertex)[j * 3 + 2] = loadmodel->brushq3.data_normal3f[(firstvertex + j) * 3 + 2];
4823                                 (loadmodel->surfmesh.data_texcoordtexture2f + 2 * out->num_firstvertex)[j * 2 + 0] = loadmodel->brushq3.data_texcoordtexture2f[(firstvertex + j) * 2 + 0];
4824                                 (loadmodel->surfmesh.data_texcoordtexture2f + 2 * out->num_firstvertex)[j * 2 + 1] = loadmodel->brushq3.data_texcoordtexture2f[(firstvertex + j) * 2 + 1];
4825                                 (loadmodel->surfmesh.data_texcoordlightmap2f + 2 * out->num_firstvertex)[j * 2 + 0] = loadmodel->brushq3.data_texcoordlightmap2f[(firstvertex + j) * 2 + 0];
4826                                 (loadmodel->surfmesh.data_texcoordlightmap2f + 2 * out->num_firstvertex)[j * 2 + 1] = loadmodel->brushq3.data_texcoordlightmap2f[(firstvertex + j) * 2 + 1];
4827                                 (loadmodel->surfmesh.data_lightmapcolor4f + 4 * out->num_firstvertex)[j * 4 + 0] = loadmodel->brushq3.data_color4f[(firstvertex + j) * 4 + 0];
4828                                 (loadmodel->surfmesh.data_lightmapcolor4f + 4 * out->num_firstvertex)[j * 4 + 1] = loadmodel->brushq3.data_color4f[(firstvertex + j) * 4 + 1];
4829                                 (loadmodel->surfmesh.data_lightmapcolor4f + 4 * out->num_firstvertex)[j * 4 + 2] = loadmodel->brushq3.data_color4f[(firstvertex + j) * 4 + 2];
4830                                 (loadmodel->surfmesh.data_lightmapcolor4f + 4 * out->num_firstvertex)[j * 4 + 3] = loadmodel->brushq3.data_color4f[(firstvertex + j) * 4 + 3];
4831                         }
4832                         for (j = 0;j < out->num_triangles*3;j++)
4833                                 (loadmodel->surfmesh.data_element3i + 3 * out->num_firsttriangle)[j] = loadmodel->brushq3.data_element3i[firstelement + j] + out->num_firstvertex;
4834                         break;
4835                 case Q3FACETYPE_PATCH:
4836                         patchsize[0] = LittleLong(in->specific.patch.patchsize[0]);
4837                         patchsize[1] = LittleLong(in->specific.patch.patchsize[1]);
4838                         originalvertex3f = loadmodel->brushq3.data_vertex3f + firstvertex * 3;
4839                         originalnormal3f = loadmodel->brushq3.data_normal3f + firstvertex * 3;
4840                         originaltexcoordtexture2f = loadmodel->brushq3.data_texcoordtexture2f + firstvertex * 2;
4841                         originaltexcoordlightmap2f = loadmodel->brushq3.data_texcoordlightmap2f + firstvertex * 2;
4842                         originalcolor4f = loadmodel->brushq3.data_color4f + firstvertex * 4;
4843                         // convert patch to Q3FACETYPE_MESH
4844                         xtess = Q3PatchTesselationOnX(patchsize[0], patchsize[1], 3, originalvertex3f, r_subdivisions_tolerance.value);
4845                         ytess = Q3PatchTesselationOnY(patchsize[0], patchsize[1], 3, originalvertex3f, r_subdivisions_tolerance.value);
4846                         // bound to user settings
4847                         xtess = bound(r_subdivisions_mintess.integer, xtess, r_subdivisions_maxtess.integer);
4848                         ytess = bound(r_subdivisions_mintess.integer, ytess, r_subdivisions_maxtess.integer);
4849                         // bound to sanity settings
4850                         xtess = bound(1, xtess, 1024);
4851                         ytess = bound(1, ytess, 1024);
4852                         // bound to user limit on vertices
4853                         while ((xtess > 1 || ytess > 1) && (((patchsize[0] - 1) * xtess) + 1) * (((patchsize[1] - 1) * ytess) + 1) > min(r_subdivisions_maxvertices.integer, 262144))
4854                         {
4855                                 if (xtess > ytess)
4856                                         xtess--;
4857                                 else
4858                                         ytess--;
4859                         }
4860                         finalwidth = ((patchsize[0] - 1) * xtess) + 1;
4861                         finalheight = ((patchsize[1] - 1) * ytess) + 1;
4862                         finalvertices = finalwidth * finalheight;
4863                         finaltriangles = (finalwidth - 1) * (finalheight - 1) * 2;
4864                         type = Q3FACETYPE_MESH;
4865                         // generate geometry
4866                         // (note: normals are skipped because they get recalculated)
4867                         Q3PatchTesselateFloat(3, sizeof(float[3]), (loadmodel->surfmesh.data_vertex3f + 3 * out->num_firstvertex), patchsize[0], patchsize[1], sizeof(float[3]), originalvertex3f, xtess, ytess);
4868                         Q3PatchTesselateFloat(3, sizeof(float[3]), (loadmodel->surfmesh.data_normal3f + 3 * out->num_firstvertex), patchsize[0], patchsize[1], sizeof(float[3]), originalnormal3f, xtess, ytess);
4869                         Q3PatchTesselateFloat(2, sizeof(float[2]), (loadmodel->surfmesh.data_texcoordtexture2f + 2 * out->num_firstvertex), patchsize[0], patchsize[1], sizeof(float[2]), originaltexcoordtexture2f, xtess, ytess);
4870                         Q3PatchTesselateFloat(2, sizeof(float[2]), (loadmodel->surfmesh.data_texcoordlightmap2f + 2 * out->num_firstvertex), patchsize[0], patchsize[1], sizeof(float[2]), originaltexcoordlightmap2f, xtess, ytess);
4871                         Q3PatchTesselateFloat(4, sizeof(float[4]), (loadmodel->surfmesh.data_lightmapcolor4f + 4 * out->num_firstvertex), patchsize[0], patchsize[1], sizeof(float[4]), originalcolor4f, xtess, ytess);
4872                         Q3PatchTriangleElements((loadmodel->surfmesh.data_element3i + 3 * out->num_firsttriangle), finalwidth, finalheight, out->num_firstvertex);
4873                         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);
4874                         if (developer.integer >= 100)
4875                         {
4876                                 if (out->num_triangles < finaltriangles)
4877                                         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);
4878                                 else
4879                                         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);
4880                         }
4881                         // q3map does not put in collision brushes for curves... ugh
4882                         // build the lower quality collision geometry
4883                         xtess = Q3PatchTesselationOnX(patchsize[0], patchsize[1], 3, originalvertex3f, r_subdivisions_collision_tolerance.value);
4884                         ytess = Q3PatchTesselationOnY(patchsize[0], patchsize[1], 3, originalvertex3f, r_subdivisions_collision_tolerance.value);
4885                         // bound to user settings
4886                         xtess = bound(r_subdivisions_collision_mintess.integer, xtess, r_subdivisions_collision_maxtess.integer);
4887                         ytess = bound(r_subdivisions_collision_mintess.integer, ytess, r_subdivisions_collision_maxtess.integer);
4888                         // bound to sanity settings
4889                         xtess = bound(1, xtess, 1024);
4890                         ytess = bound(1, ytess, 1024);
4891                         // bound to user limit on vertices
4892                         while ((xtess > 1 || ytess > 1) && (((patchsize[0] - 1) * xtess) + 1) * (((patchsize[1] - 1) * ytess) + 1) > min(r_subdivisions_collision_maxvertices.integer, 262144))
4893                         {
4894                                 if (xtess > ytess)
4895                                         xtess--;
4896                                 else
4897                                         ytess--;
4898                         }
4899                         finalwidth = ((patchsize[0] - 1) * xtess) + 1;
4900                         finalheight = ((patchsize[1] - 1) * ytess) + 1;
4901                         finalvertices = finalwidth * finalheight;
4902                         finaltriangles = (finalwidth - 1) * (finalheight - 1) * 2;
4903
4904                         out->data_collisionvertex3f = (float *)Mem_Alloc(loadmodel->mempool, sizeof(float[3]) * finalvertices);
4905                         out->data_collisionelement3i = (int *)Mem_Alloc(loadmodel->mempool, sizeof(int[3]) * finaltriangles);
4906                         out->num_collisionvertices = finalvertices;
4907                         out->num_collisiontriangles = finaltriangles;
4908                         Q3PatchTesselateFloat(3, sizeof(float[3]), out->data_collisionvertex3f, patchsize[0], patchsize[1], sizeof(float[3]), originalvertex3f, xtess, ytess);
4909                         Q3PatchTriangleElements(out->data_collisionelement3i, finalwidth, finalheight, 0);
4910
4911                         //Mod_SnapVertices(3, out->num_vertices, (loadmodel->surfmesh.data_vertex3f + 3 * out->num_firstvertex), 0.25);
4912                         Mod_SnapVertices(3, out->num_collisionvertices, out->data_collisionvertex3f, 1);
4913
4914                         oldnumtriangles = out->num_triangles;
4915                         oldnumtriangles2 = out->num_collisiontriangles;
4916                         out->num_collisiontriangles = Mod_RemoveDegenerateTriangles(out->num_collisiontriangles, out->data_collisionelement3i, out->data_collisionelement3i, out->data_collisionvertex3f);
4917                         if (developer.integer >= 100)
4918                                 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);
4919                         break;
4920                 default:
4921                         break;
4922                 }
4923                 meshvertices += out->num_vertices;
4924                 meshtriangles += out->num_triangles;
4925                 for (j = 0, invalidelements = 0;j < out->num_triangles * 3;j++)
4926                         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)
4927                                 invalidelements++;
4928                 if (invalidelements)
4929                 {
4930                         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);
4931                         for (j = 0;j < out->num_triangles * 3;j++)
4932                         {
4933                                 Con_Printf(" %i", (loadmodel->surfmesh.data_element3i + 3 * out->num_firsttriangle)[j] - out->num_firstvertex);
4934                                 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)
4935                                         (loadmodel->surfmesh.data_element3i + 3 * out->num_firsttriangle)[j] = out->num_firstvertex;
4936                         }
4937                         Con_Print("\n");
4938                 }
4939                 // calculate a bounding box
4940                 VectorClear(out->mins);
4941                 VectorClear(out->maxs);
4942                 if (out->num_vertices)
4943                 {
4944                         VectorCopy((loadmodel->surfmesh.data_vertex3f + 3 * out->num_firstvertex), out->mins);
4945                         VectorCopy((loadmodel->surfmesh.data_vertex3f + 3 * out->num_firstvertex), out->maxs);
4946                         for (j = 1, v = (loadmodel->surfmesh.data_vertex3f + 3 * out->num_firstvertex) + 3;j < out->num_vertices;j++, v += 3)
4947                         {
4948                                 out->mins[0] = min(out->mins[0], v[0]);
4949                                 out->maxs[0] = max(out->maxs[0], v[0]);
4950                                 out->mins[1] = min(out->mins[1], v[1]);
4951                                 out->maxs[1] = max(out->maxs[1], v[1]);
4952                                 out->mins[2] = min(out->mins[2], v[2]);
4953                                 out->maxs[2] = max(out->maxs[2], v[2]);
4954                         }
4955                         out->mins[0] -= 1.0f;
4956                         out->mins[1] -= 1.0f;
4957                         out->mins[2] -= 1.0f;
4958                         out->maxs[0] += 1.0f;
4959                         out->maxs[1] += 1.0f;
4960                         out->maxs[2] += 1.0f;
4961                 }
4962                 // set lightmap styles for consistency with q1bsp
4963                 //out->lightmapinfo->styles[0] = 0;
4964                 //out->lightmapinfo->styles[1] = 255;
4965                 //out->lightmapinfo->styles[2] = 255;
4966                 //out->lightmapinfo->styles[3] = 255;
4967         }
4968
4969         // for per pixel lighting
4970         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);
4971
4972         // free the no longer needed vertex data
4973         loadmodel->brushq3.num_vertices = 0;
4974         Mem_Free(loadmodel->brushq3.data_vertex3f);
4975         loadmodel->brushq3.data_vertex3f = NULL;
4976         loadmodel->brushq3.data_normal3f = NULL;
4977         loadmodel->brushq3.data_texcoordtexture2f = NULL;
4978         loadmodel->brushq3.data_texcoordlightmap2f = NULL;
4979         loadmodel->brushq3.data_color4f = NULL;
4980         // free the no longer needed triangle data
4981         loadmodel->brushq3.num_triangles = 0;
4982         Mem_Free(loadmodel->brushq3.data_element3i);
4983         loadmodel->brushq3.data_element3i = NULL;
4984 }
4985
4986 static void Mod_Q3BSP_LoadModels(lump_t *l)
4987 {
4988         q3dmodel_t *in;
4989         q3dmodel_t *out;
4990         int i, j, n, c, count;
4991
4992         in = (q3dmodel_t *)(mod_base + l->fileofs);
4993         if (l->filelen % sizeof(*in))
4994                 Host_Error("Mod_Q3BSP_LoadModels: funny lump size in %s",loadmodel->name);
4995         count = l->filelen / sizeof(*in);
4996         out = (q3dmodel_t *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
4997
4998         loadmodel->brushq3.data_models = out;
4999         loadmodel->brushq3.num_models = count;
5000
5001         for (i = 0;i < count;i++, in++, out++)
5002         {
5003                 for (j = 0;j < 3;j++)
5004                 {
5005                         out->mins[j] = LittleFloat(in->mins[j]);
5006                         out->maxs[j] = LittleFloat(in->maxs[j]);
5007                 }
5008                 n = LittleLong(in->firstface);
5009                 c = LittleLong(in->numfaces);
5010                 if (n < 0 || n + c > loadmodel->num_surfaces)
5011                         Host_Error("Mod_Q3BSP_LoadModels: invalid face range %i : %i (%i faces)", n, n + c, loadmodel->num_surfaces);
5012                 out->firstface = n;
5013                 out->numfaces = c;
5014                 n = LittleLong(in->firstbrush);
5015                 c = LittleLong(in->numbrushes);
5016                 if (n < 0 || n + c > loadmodel->brush.num_brushes)
5017                         Host_Error("Mod_Q3BSP_LoadModels: invalid brush range %i : %i (%i brushes)", n, n + c, loadmodel->brush.num_brushes);
5018                 out->firstbrush = n;
5019                 out->numbrushes = c;
5020         }
5021 }
5022
5023 static void Mod_Q3BSP_LoadLeafBrushes(lump_t *l)
5024 {
5025         int *in;
5026         int *out;
5027         int i, n, count;
5028
5029         in = (int *)(mod_base + l->fileofs);
5030         if (l->filelen % sizeof(*in))
5031                 Host_Error("Mod_Q3BSP_LoadLeafBrushes: funny lump size in %s",loadmodel->name);
5032         count = l->filelen / sizeof(*in);
5033         out = (int *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
5034
5035         loadmodel->brush.data_leafbrushes = out;
5036         loadmodel->brush.num_leafbrushes = count;
5037
5038         for (i = 0;i < count;i++, in++, out++)
5039         {
5040                 n = LittleLong(*in);
5041                 if (n < 0 || n >= loadmodel->brush.num_brushes)
5042                         Host_Error("Mod_Q3BSP_LoadLeafBrushes: invalid brush index %i (%i brushes)", n, loadmodel->brush.num_brushes);
5043                 *out = n;
5044         }
5045 }
5046
5047 static void Mod_Q3BSP_LoadLeafFaces(lump_t *l)
5048 {
5049         int *in;
5050         int *out;
5051         int i, n, count;
5052
5053         in = (int *)(mod_base + l->fileofs);
5054         if (l->filelen % sizeof(*in))
5055                 Host_Error("Mod_Q3BSP_LoadLeafFaces: funny lump size in %s",loadmodel->name);
5056         count = l->filelen / sizeof(*in);
5057         out = (int *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
5058
5059         loadmodel->brush.data_leafsurfaces = out;
5060         loadmodel->brush.num_leafsurfaces = count;
5061
5062         for (i = 0;i < count;i++, in++, out++)
5063         {
5064                 n = LittleLong(*in);
5065                 if (n < 0 || n >= loadmodel->num_surfaces)
5066                         Host_Error("Mod_Q3BSP_LoadLeafFaces: invalid face index %i (%i faces)", n, loadmodel->num_surfaces);
5067                 *out = n;
5068         }
5069 }
5070
5071 static void Mod_Q3BSP_LoadLeafs(lump_t *l)
5072 {
5073         q3dleaf_t *in;
5074         mleaf_t *out;
5075         int i, j, n, c, count;
5076
5077         in = (q3dleaf_t *)(mod_base + l->fileofs);
5078         if (l->filelen % sizeof(*in))
5079                 Host_Error("Mod_Q3BSP_LoadLeafs: funny lump size in %s",loadmodel->name);
5080         count = l->filelen / sizeof(*in);
5081         out = (mleaf_t *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
5082
5083         loadmodel->brush.data_leafs = out;
5084         loadmodel->brush.num_leafs = count;
5085
5086         for (i = 0;i < count;i++, in++, out++)
5087         {
5088                 out->parent = NULL;
5089                 out->plane = NULL;
5090                 out->clusterindex = LittleLong(in->clusterindex);
5091                 out->areaindex = LittleLong(in->areaindex);
5092                 for (j = 0;j < 3;j++)
5093                 {
5094                         // yes the mins/maxs are ints
5095                         out->mins[j] = LittleLong(in->mins[j]) - 1;
5096                         out->maxs[j] = LittleLong(in->maxs[j]) + 1;
5097                 }
5098                 n = LittleLong(in->firstleafface);
5099                 c = LittleLong(in->numleaffaces);
5100                 if (n < 0 || n + c > loadmodel->brush.num_leafsurfaces)
5101                         Host_Error("Mod_Q3BSP_LoadLeafs: invalid leafsurface range %i : %i (%i leafsurfaces)", n, n + c, loadmodel->brush.num_leafsurfaces);
5102                 out->firstleafsurface = loadmodel->brush.data_leafsurfaces + n;
5103                 out->numleafsurfaces = c;
5104                 n = LittleLong(in->firstleafbrush);
5105                 c = LittleLong(in->numleafbrushes);
5106                 if (n < 0 || n + c > loadmodel->brush.num_leafbrushes)
5107                         Host_Error("Mod_Q3BSP_LoadLeafs: invalid leafbrush range %i : %i (%i leafbrushes)", n, n + c, loadmodel->brush.num_leafbrushes);
5108                 out->firstleafbrush = loadmodel->brush.data_leafbrushes + n;
5109                 out->numleafbrushes = c;
5110         }
5111 }
5112
5113 static void Mod_Q3BSP_LoadNodes(lump_t *l)
5114 {
5115         q3dnode_t *in;
5116         mnode_t *out;
5117         int i, j, n, count;
5118
5119         in = (q3dnode_t *)(mod_base + l->fileofs);
5120         if (l->filelen % sizeof(*in))
5121                 Host_Error("Mod_Q3BSP_LoadNodes: funny lump size in %s",loadmodel->name);
5122         count = l->filelen / sizeof(*in);
5123         out = (mnode_t *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
5124
5125         loadmodel->brush.data_nodes = out;
5126         loadmodel->brush.num_nodes = count;
5127
5128         for (i = 0;i < count;i++, in++, out++)
5129         {
5130                 out->parent = NULL;
5131                 n = LittleLong(in->planeindex);
5132                 if (n < 0 || n >= loadmodel->brush.num_planes)
5133                         Host_Error("Mod_Q3BSP_LoadNodes: invalid planeindex %i (%i planes)", n, loadmodel->brush.num_planes);
5134                 out->plane = loadmodel->brush.data_planes + n;
5135                 for (j = 0;j < 2;j++)
5136                 {
5137                         n = LittleLong(in->childrenindex[j]);
5138                         if (n >= 0)
5139                         {
5140                                 if (n >= loadmodel->brush.num_nodes)
5141                                         Host_Error("Mod_Q3BSP_LoadNodes: invalid child node index %i (%i nodes)", n, loadmodel->brush.num_nodes);
5142                                 out->children[j] = loadmodel->brush.data_nodes + n;
5143                         }
5144                         else
5145                         {
5146                                 n = -1 - n;
5147                                 if (n >= loadmodel->brush.num_leafs)
5148                                         Host_Error("Mod_Q3BSP_LoadNodes: invalid child leaf index %i (%i leafs)", n, loadmodel->brush.num_leafs);
5149                                 out->children[j] = (mnode_t *)(loadmodel->brush.data_leafs + n);
5150                         }
5151                 }
5152                 for (j = 0;j < 3;j++)
5153                 {
5154                         // yes the mins/maxs are ints
5155                         out->mins[j] = LittleLong(in->mins[j]) - 1;
5156                         out->maxs[j] = LittleLong(in->maxs[j]) + 1;
5157                 }
5158         }
5159
5160         // set the parent pointers
5161         Mod_Q1BSP_LoadNodes_RecursiveSetParent(loadmodel->brush.data_nodes, NULL);
5162 }
5163
5164 static void Mod_Q3BSP_LoadLightGrid(lump_t *l)
5165 {
5166         q3dlightgrid_t *in;
5167         q3dlightgrid_t *out;
5168         int count;
5169
5170         in = (q3dlightgrid_t *)(mod_base + l->fileofs);
5171         if (l->filelen % sizeof(*in))
5172                 Host_Error("Mod_Q3BSP_LoadLightGrid: funny lump size in %s",loadmodel->name);
5173         loadmodel->brushq3.num_lightgrid_scale[0] = 1.0f / loadmodel->brushq3.num_lightgrid_cellsize[0];
5174         loadmodel->brushq3.num_lightgrid_scale[1] = 1.0f / loadmodel->brushq3.num_lightgrid_cellsize[1];
5175         loadmodel->brushq3.num_lightgrid_scale[2] = 1.0f / loadmodel->brushq3.num_lightgrid_cellsize[2];
5176         loadmodel->brushq3.num_lightgrid_imins[0] = (int)ceil(loadmodel->brushq3.data_models->mins[0] * loadmodel->brushq3.num_lightgrid_scale[0]);
5177         loadmodel->brushq3.num_lightgrid_imins[1] = (int)ceil(loadmodel->brushq3.data_models->mins[1] * loadmodel->brushq3.num_lightgrid_scale[1]);
5178         loadmodel->brushq3.num_lightgrid_imins[2] = (int)ceil(loadmodel->brushq3.data_models->mins[2] * loadmodel->brushq3.num_lightgrid_scale[2]);
5179         loadmodel->brushq3.num_lightgrid_imaxs[0] = (int)floor(loadmodel->brushq3.data_models->maxs[0] * loadmodel->brushq3.num_lightgrid_scale[0]);
5180         loadmodel->brushq3.num_lightgrid_imaxs[1] = (int)floor(loadmodel->brushq3.data_models->maxs[1] * loadmodel->brushq3.num_lightgrid_scale[1]);
5181         loadmodel->brushq3.num_lightgrid_imaxs[2] = (int)floor(loadmodel->brushq3.data_models->maxs[2] * loadmodel->brushq3.num_lightgrid_scale[2]);
5182         loadmodel->brushq3.num_lightgrid_isize[0] = loadmodel->brushq3.num_lightgrid_imaxs[0] - loadmodel->brushq3.num_lightgrid_imins[0] + 1;
5183         loadmodel->brushq3.num_lightgrid_isize[1] = loadmodel->brushq3.num_lightgrid_imaxs[1] - loadmodel->brushq3.num_lightgrid_imins[1] + 1;
5184         loadmodel->brushq3.num_lightgrid_isize[2] = loadmodel->brushq3.num_lightgrid_imaxs[2] - loadmodel->brushq3.num_lightgrid_imins[2] + 1;
5185         count = loadmodel->brushq3.num_lightgrid_isize[0] * loadmodel->brushq3.num_lightgrid_isize[1] * loadmodel->brushq3.num_lightgrid_isize[2];
5186         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]);
5187         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]);
5188
5189         // if lump is empty there is nothing to load, we can deal with that in the LightPoint code
5190         if (l->filelen)
5191         {
5192                 if (l->filelen < count * (int)sizeof(*in))
5193                         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]);
5194                 if (l->filelen != count * (int)sizeof(*in))
5195                         Con_Printf("Mod_Q3BSP_LoadLightGrid: Warning: calculated lightgrid size %i bytes does not match lump size %i", count * sizeof(*in), l->filelen);
5196                 out = (q3dlightgrid_t *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
5197                 loadmodel->brushq3.data_lightgrid = out;
5198                 loadmodel->brushq3.num_lightgrid = count;
5199                 // no swapping or validation necessary
5200                 memcpy(out, in, count * (int)sizeof(*out));
5201         }
5202 }
5203
5204 static void Mod_Q3BSP_LoadPVS(lump_t *l)
5205 {
5206         q3dpvs_t *in;
5207         int totalchains;
5208
5209         if (l->filelen == 0)
5210         {
5211                 int i;
5212                 // unvised maps often have cluster indices even without pvs, so check
5213                 // leafs to find real number of clusters
5214                 loadmodel->brush.num_pvsclusters = 1;
5215                 for (i = 0;i < loadmodel->brush.num_leafs;i++)
5216                         loadmodel->brush.num_pvsclusters = max(loadmodel->brush.num_pvsclusters, loadmodel->brush.data_leafs[i].clusterindex + 1);
5217
5218                 // create clusters
5219                 loadmodel->brush.num_pvsclusterbytes = (loadmodel->brush.num_pvsclusters + 7) / 8;
5220                 totalchains = loadmodel->brush.num_pvsclusterbytes * loadmodel->brush.num_pvsclusters;
5221                 loadmodel->brush.data_pvsclusters = (unsigned char *)Mem_Alloc(loadmodel->mempool, totalchains);
5222                 memset(loadmodel->brush.data_pvsclusters, 0xFF, totalchains);
5223                 return;
5224         }
5225
5226         in = (q3dpvs_t *)(mod_base + l->fileofs);
5227         if (l->filelen < 9)
5228                 Host_Error("Mod_Q3BSP_LoadPVS: funny lump size in %s",loadmodel->name);
5229
5230         loadmodel->brush.num_pvsclusters = LittleLong(in->numclusters);
5231         loadmodel->brush.num_pvsclusterbytes = LittleLong(in->chainlength);
5232         if (loadmodel->brush.num_pvsclusterbytes < ((loadmodel->brush.num_pvsclusters + 7) / 8))
5233                 Host_Error("Mod_Q3BSP_LoadPVS: (chainlength = %i) < ((numclusters = %i) + 7) / 8", loadmodel->brush.num_pvsclusterbytes, loadmodel->brush.num_pvsclusters);
5234         totalchains = loadmodel->brush.num_pvsclusterbytes * loadmodel->brush.num_pvsclusters;
5235         if (l->filelen < totalchains + (int)sizeof(*in))
5236                 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);
5237
5238         loadmodel->brush.data_pvsclusters = (unsigned char *)Mem_Alloc(loadmodel->mempool, totalchains);
5239         memcpy(loadmodel->brush.data_pvsclusters, (unsigned char *)(in + 1), totalchains);
5240 }
5241
5242 static void Mod_Q3BSP_LightPoint(model_t *model, const vec3_t p, vec3_t ambientcolor, vec3_t diffusecolor, vec3_t diffusenormal)
5243 {
5244         int i, j, k, index[3];
5245         float transformed[3], blend1, blend2, blend, yaw, pitch, sinpitch;
5246         q3dlightgrid_t *a, *s;
5247         if (!model->brushq3.num_lightgrid)
5248         {
5249                 ambientcolor[0] = 1;
5250                 ambientcolor[1] = 1;
5251                 ambientcolor[2] = 1;
5252                 return;
5253         }
5254         Matrix4x4_Transform(&model->brushq3.num_lightgrid_indexfromworld, p, transformed);
5255         //Matrix4x4_Print(&model->brushq3.num_lightgrid_indexfromworld);
5256         //Con_Printf("%f %f %f transformed %f %f %f clamped ", p[0], p[1], p[2], transformed[0], transformed[1], transformed[2]);
5257         transformed[0] = bound(0, transformed[0], model->brushq3.num_lightgrid_isize[0] - 1);
5258         transformed[1] = bound(0, transformed[1], model->brushq3.num_lightgrid_isize[1] - 1);
5259         transformed[2] = bound(0, transformed[2], model->brushq3.num_lightgrid_isize[2] - 1);
5260         index[0] = (int)floor(transformed[0]);
5261         index[1] = (int)floor(transformed[1]);
5262         index[2] = (int)floor(transformed[2]);
5263         //Con_Printf("%f %f %f index %i %i %i:\n", transformed[0], transformed[1], transformed[2], index[0], index[1], index[2]);
5264         // now lerp the values
5265         VectorClear(diffusenormal);
5266         a = &model->brushq3.data_lightgrid[(index[2] * model->brushq3.num_lightgrid_isize[1] + index[1]) * model->brushq3.num_lightgrid_isize[0] + index[0]];
5267         for (k = 0;k < 2;k++)
5268         {
5269                 blend1 = (k ? (transformed[2] - index[2]) : (1 - (transformed[2] - index[2])));
5270                 if (blend1 < 0.001f || index[2] + k >= model->brushq3.num_lightgrid_isize[2])
5271                         continue;
5272                 for (j = 0;j < 2;j++)
5273                 {
5274                         blend2 = blend1 * (j ? (transformed[1] - index[1]) : (1 - (transformed[1] - index[1])));
5275                         if (blend2 < 0.001f || index[1] + j >= model->brushq3.num_lightgrid_isize[1])
5276                                 continue;
5277                         for (i = 0;i < 2;i++)
5278                         {
5279                                 blend = blend2 * (i ? (transformed[0] - index[0]) : (1 - (transformed[0] - index[0])));
5280                                 if (blend < 0.001f || index[0] + i >= model->brushq3.num_lightgrid_isize[0])
5281                                         continue;
5282                                 s = a + (k * model->brushq3.num_lightgrid_isize[1] + j) * model->brushq3.num_lightgrid_isize[0] + i;
5283                                 VectorMA(ambientcolor, blend * (1.0f / 128.0f), s->ambientrgb, ambientcolor);
5284                                 VectorMA(diffusecolor, blend * (1.0f / 128.0f), s->diffusergb, diffusecolor);
5285                                 pitch = s->diffusepitch * M_PI / 128;
5286                                 yaw = s->diffuseyaw * M_PI / 128;
5287                                 sinpitch = sin(pitch);
5288                                 diffusenormal[0] += blend * (cos(yaw) * sinpitch);
5289                                 diffusenormal[1] += blend * (sin(yaw) * sinpitch);
5290                                 diffusenormal[2] += blend * (cos(pitch));
5291                                 //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)));
5292                         }
5293                 }
5294         }
5295         VectorNormalize(diffusenormal);
5296         //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]);
5297 }
5298
5299 static void Mod_Q3BSP_TracePoint_RecursiveBSPNode(trace_t *trace, model_t *model, mnode_t *node, const vec3_t point, int markframe)
5300 {
5301         int i;
5302         mleaf_t *leaf;
5303         colbrushf_t *brush;
5304         // find which leaf the point is in
5305         while (node->plane)
5306                 node = node->children[DotProduct(point, node->plane->normal) < node->plane->dist];
5307         // point trace the brushes
5308         leaf = (mleaf_t *)node;
5309         for (i = 0;i < leaf->numleafbrushes;i++)
5310         {
5311                 brush = model->brush.data_brushes[leaf->firstleafbrush[i]].colbrushf;
5312                 if (brush && brush->markframe != markframe && BoxesOverlap(point, point, brush->mins, brush->maxs))
5313                 {
5314                         brush->markframe = markframe;
5315                         Collision_TracePointBrushFloat(trace, point, brush);
5316                 }
5317         }
5318         // can't do point traces on curves (they have no thickness)
5319 }
5320
5321 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)
5322 {
5323         int i, startside, endside;
5324         float dist1, dist2, midfrac, mid[3], nodesegmentmins[3], nodesegmentmaxs[3];
5325         mleaf_t *leaf;
5326         msurface_t *surface;
5327         mplane_t *plane;
5328         colbrushf_t *brush;
5329         // walk the tree until we hit a leaf, recursing for any split cases
5330         while (node->plane)
5331         {
5332                 plane = node->plane;
5333                 // axial planes are much more common than non-axial, so an optimized
5334                 // axial case pays off here
5335                 if (plane->type < 3)
5336                 {
5337                         dist1 = start[plane->type] - plane->dist;
5338                         dist2 = end[plane->type] - plane->dist;
5339                 }
5340                 else
5341                 {
5342                         dist1 = DotProduct(start, plane->normal) - plane->dist;
5343                         dist2 = DotProduct(end, plane->normal) - plane->dist;
5344                 }
5345                 startside = dist1 < 0;
5346                 endside = dist2 < 0;
5347                 if (startside == endside)
5348                 {
5349                         // most of the time the line fragment is on one side of the plane
5350                         node = node->children[startside];
5351                 }
5352                 else
5353                 {
5354                         // line crosses node plane, split the line
5355                         dist1 = PlaneDiff(linestart, plane);
5356                         dist2 = PlaneDiff(lineend, plane);
5357                         midfrac = dist1 / (dist1 - dist2);
5358                         VectorLerp(linestart, midfrac, lineend, mid);
5359                         // take the near side first
5360                         Mod_Q3BSP_TraceLine_RecursiveBSPNode(trace, model, node->children[startside], start, mid, startfrac, midfrac, linestart, lineend, markframe, segmentmins, segmentmaxs);
5361                         // if we found an impact on the front side, don't waste time
5362                         // exploring the far side
5363                         if (midfrac <= trace->realfraction)
5364                                 Mod_Q3BSP_TraceLine_RecursiveBSPNode(trace, model, node->children[endside], mid, end, midfrac, endfrac, linestart, lineend, markframe, segmentmins, segmentmaxs);
5365                         return;
5366                 }
5367         }
5368         // hit a leaf
5369         nodesegmentmins[0] = min(start[0], end[0]) - 1;
5370         nodesegmentmins[1] = min(start[1], end[1]) - 1;
5371         nodesegmentmins[2] = min(start[2], end[2]) - 1;
5372         nodesegmentmaxs[0] = max(start[0], end[0]) + 1;
5373         nodesegmentmaxs[1] = max(start[1], end[1]) + 1;
5374         nodesegmentmaxs[2] = max(start[2], end[2]) + 1;
5375         // line trace the brushes
5376         leaf = (mleaf_t *)node;
5377         for (i = 0;i < leaf->numleafbrushes;i++)
5378         {
5379                 brush = model->brush.data_brushes[leaf->firstleafbrush[i]].colbrushf;
5380                 if (brush && brush->markframe != markframe && BoxesOverlap(nodesegmentmins, nodesegmentmaxs, brush->mins, brush->maxs))
5381                 {
5382                         brush->markframe = markframe;
5383                         Collision_TraceLineBrushFloat(trace, linestart, lineend, brush, brush);
5384                 }
5385         }
5386         // can't do point traces on curves (they have no thickness)
5387         if (mod_q3bsp_curves_collisions.integer && !VectorCompare(start, end))
5388         {
5389                 // line trace the curves
5390                 for (i = 0;i < leaf->numleafsurfaces;i++)
5391                 {
5392                         surface = model->data_surfaces + leaf->firstleafsurface[i];
5393                         if (surface->num_collisiontriangles && surface->collisionmarkframe != markframe && BoxesOverlap(nodesegmentmins, nodesegmentmaxs, surface->mins, surface->maxs))
5394                         {
5395                                 surface->collisionmarkframe = markframe;
5396                                 Collision_TraceLineTriangleMeshFloat(trace, linestart, lineend, surface->num_collisiontriangles, surface->data_collisionelement3i, surface->data_collisionvertex3f, surface->texture->supercontents, surface->texture->surfaceflags, surface->texture, segmentmins, segmentmaxs);
5397                         }
5398                 }
5399         }
5400 }
5401
5402 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)
5403 {
5404         int i;
5405         int sides;
5406         mleaf_t *leaf;
5407         colbrushf_t *brush;
5408         msurface_t *surface;
5409         mplane_t *plane;
5410         float nodesegmentmins[3], nodesegmentmaxs[3];
5411         // walk the tree until we hit a leaf, recursing for any split cases
5412         while (node->plane)
5413         {
5414                 plane = node->plane;
5415                 // axial planes are much more common than non-axial, so an optimized
5416                 // axial case pays off here
5417                 if (plane->type < 3)
5418                 {
5419                         // this is an axial plane, compare bounding box directly to it and
5420                         // recurse sides accordingly
5421                         // recurse down node sides
5422                         // use an inlined axial BoxOnPlaneSide to slightly reduce overhead
5423                         //sides = BoxOnPlaneSide(nodesegmentmins, nodesegmentmaxs, plane);
5424                         //sides = ((segmentmaxs[plane->type] >= plane->dist) | ((segmentmins[plane->type] < plane->dist) << 1));
5425                         sides = ((segmentmaxs[plane->type] >= plane->dist) + ((segmentmins[plane->type] < plane->dist) * 2));
5426                 }
5427                 else
5428                 {
5429                         // this is a non-axial plane, so check if the start and end boxes
5430                         // are both on one side of the plane to handle 'diagonal' cases
5431                         sides = BoxOnPlaneSide(thisbrush_start->mins, thisbrush_start->maxs, plane) | BoxOnPlaneSide(thisbrush_end->mins, thisbrush_end->maxs, plane);
5432                 }
5433                 if (sides == 3)
5434                 {
5435                         // segment crosses plane
5436                         Mod_Q3BSP_TraceBrush_RecursiveBSPNode(trace, model, node->children[0], thisbrush_start, thisbrush_end, markframe, segmentmins, segmentmaxs);
5437                         sides = 2;
5438                 }
5439                 // if sides == 0 then the trace itself is bogus (Not A Number values),
5440                 // in this case we simply pretend the trace hit nothing
5441                 if (sides == 0)
5442                         return; // ERROR: NAN bounding box!
5443                 // take whichever side the segment box is on
5444                 node = node->children[sides - 1];
5445         }
5446         nodesegmentmins[0] = max(segmentmins[0], node->mins[0] - 1);
5447         nodesegmentmins[1] = max(segmentmins[1], node->mins[1] - 1);
5448         nodesegmentmins[2] = max(segmentmins[2], node->mins[2] - 1);
5449         nodesegmentmaxs[0] = min(segmentmaxs[0], node->maxs[0] + 1);
5450         nodesegmentmaxs[1] = min(segmentmaxs[1], node->maxs[1] + 1);
5451         nodesegmentmaxs[2] = min(segmentmaxs[2], node->maxs[2] + 1);
5452         // hit a leaf
5453         leaf = (mleaf_t *)node;
5454         for (i = 0;i < leaf->numleafbrushes;i++)
5455         {
5456                 brush = model->brush.data_brushes[leaf->firstleafbrush[i]].colbrushf;
5457                 if (brush && brush->markframe != markframe && BoxesOverlap(nodesegmentmins, nodesegmentmaxs, brush->mins, brush->maxs))
5458                 {
5459                         brush->markframe = markframe;
5460                         Collision_TraceBrushBrushFloat(trace, thisbrush_start, thisbrush_end, brush, brush);
5461                 }
5462         }
5463         if (mod_q3bsp_curves_collisions.integer)
5464         {
5465                 for (i = 0;i < leaf->numleafsurfaces;i++)
5466                 {
5467                         surface = model->data_surfaces + leaf->firstleafsurface[i];
5468                         if (surface->num_collisiontriangles && surface->collisionmarkframe != markframe && BoxesOverlap(nodesegmentmins, nodesegmentmaxs, surface->mins, surface->maxs))
5469                         {
5470                                 surface->collisionmarkframe = markframe;
5471                                 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);
5472                         }
5473                 }
5474         }
5475 }
5476
5477 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)
5478 {
5479         int i;
5480         float segmentmins[3], segmentmaxs[3];
5481         static int markframe = 0;
5482         msurface_t *surface;
5483         q3mbrush_t *brush;
5484         memset(trace, 0, sizeof(*trace));
5485         trace->fraction = 1;
5486         trace->realfraction = 1;
5487         trace->hitsupercontentsmask = hitsupercontentsmask;
5488         if (mod_q3bsp_optimizedtraceline.integer && VectorLength2(boxmins) + VectorLength2(boxmaxs) == 0)
5489         {
5490                 if (VectorCompare(start, end))
5491                 {
5492                         // point trace
5493                         if (model->brush.submodel)
5494                         {
5495                                 for (i = 0, brush = model->brush.data_brushes + model->firstmodelbrush;i < model->nummodelbrushes;i++, brush++)
5496                                         if (brush->colbrushf)
5497                                                 Collision_TracePointBrushFloat(trace, start, brush->colbrushf);
5498                         }
5499                         else
5500                                 Mod_Q3BSP_TracePoint_RecursiveBSPNode(trace, model, model->brush.data_nodes, start, ++markframe);
5501                 }
5502                 else
5503                 {
5504                         // line trace
5505                         segmentmins[0] = min(start[0], end[0]) - 1;
5506                         segmentmins[1] = min(start[1], end[1]) - 1;
5507                         segmentmins[2] = min(start[2], end[2]) - 1;
5508                         segmentmaxs[0] = max(start[0], end[0]) + 1;
5509                         segmentmaxs[1] = max(start[1], end[1]) + 1;
5510                         segmentmaxs[2] = max(start[2], end[2]) + 1;
5511                         if (model->brush.submodel)
5512                         {
5513                                 for (i = 0, brush = model->brush.data_brushes + model->firstmodelbrush;i < model->nummodelbrushes;i++, brush++)
5514                                         if (brush->colbrushf)
5515                                                 Collision_TraceLineBrushFloat(trace, start, end, brush->colbrushf, brush->colbrushf);
5516                                 if (mod_q3bsp_curves_collisions.integer)
5517                                         for (i = 0, surface = model->data_surfaces + model->firstmodelsurface;i < model->nummodelsurfaces;i++, surface++)
5518                                                 if (surface->num_collisiontriangles)
5519                                                         Collision_TraceLineTriangleMeshFloat(trace, start, end, surface->num_collisiontriangles, surface->data_collisionelement3i, surface->data_collisionvertex3f, surface->texture->supercontents, surface->texture->surfaceflags, surface->texture, segmentmins, segmentmaxs);
5520                         }
5521                         else
5522                                 Mod_Q3BSP_TraceLine_RecursiveBSPNode(trace, model, model->brush.data_nodes, start, end, 0, 1, start, end, ++markframe, segmentmins, segmentmaxs);
5523                 }
5524         }
5525         else
5526         {
5527                 // box trace, performed as brush trace
5528                 colbrushf_t *thisbrush_start, *thisbrush_end;
5529                 vec3_t boxstartmins, boxstartmaxs, boxendmins, boxendmaxs;
5530                 segmentmins[0] = min(start[0], end[0]) + boxmins[0] - 1;
5531                 segmentmins[1] = min(start[1], end[1]) + boxmins[1] - 1;
5532                 segmentmins[2] = min(start[2], end[2]) + boxmins[2] - 1;
5533                 segmentmaxs[0] = max(start[0], end[0]) + boxmaxs[0] + 1;
5534                 segmentmaxs[1] = max(start[1], end[1]) + boxmaxs[1] + 1;
5535                 segmentmaxs[2] = max(start[2], end[2]) + boxmaxs[2] + 1;
5536                 VectorAdd(start, boxmins, boxstartmins);
5537                 VectorAdd(start, boxmaxs, boxstartmaxs);
5538                 VectorAdd(end, boxmins, boxendmins);
5539                 VectorAdd(end, boxmaxs, boxendmaxs);
5540                 thisbrush_start = Collision_BrushForBox(&identitymatrix, boxstartmins, boxstartmaxs, 0, 0, NULL);
5541                 thisbrush_end = Collision_BrushForBox(&identitymatrix, boxendmins, boxendmaxs, 0, 0, NULL);
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_TraceBrushBrushFloat(trace, thisbrush_start, thisbrush_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_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);
5551                 }
5552                 else
5553                         Mod_Q3BSP_TraceBrush_RecursiveBSPNode(trace, model, model->brush.data_nodes, thisbrush_start, thisbrush_end, ++markframe, segmentmins, segmentmaxs);
5554         }
5555 }
5556
5557 static int Mod_Q3BSP_SuperContentsFromNativeContents(model_t *model, int nativecontents)
5558 {
5559         int supercontents = 0;
5560         if (nativecontents & CONTENTSQ3_SOLID)
5561                 supercontents |= SUPERCONTENTS_SOLID;
5562         if (nativecontents & CONTENTSQ3_WATER)
5563                 supercontents |= SUPERCONTENTS_WATER;
5564         if (nativecontents & CONTENTSQ3_SLIME)
5565                 supercontents |= SUPERCONTENTS_SLIME;
5566         if (nativecontents & CONTENTSQ3_LAVA)
5567                 supercontents |= SUPERCONTENTS_LAVA;
5568         if (nativecontents & CONTENTSQ3_BODY)
5569                 supercontents |= SUPERCONTENTS_BODY;
5570         if (nativecontents & CONTENTSQ3_CORPSE)
5571                 supercontents |= SUPERCONTENTS_CORPSE;
5572         if (nativecontents & CONTENTSQ3_NODROP)
5573                 supercontents |= SUPERCONTENTS_NODROP;
5574         if (nativecontents & CONTENTSQ3_PLAYERCLIP)
5575                 supercontents |= SUPERCONTENTS_PLAYERCLIP;
5576         if (nativecontents & CONTENTSQ3_MONSTERCLIP)
5577                 supercontents |= SUPERCONTENTS_MONSTERCLIP;
5578         if (nativecontents & CONTENTSQ3_DONOTENTER)
5579                 supercontents |= SUPERCONTENTS_DONOTENTER;
5580         return supercontents;
5581 }
5582
5583 static int Mod_Q3BSP_NativeContentsFromSuperContents(model_t *model, int supercontents)
5584 {
5585         int nativecontents = 0;
5586         if (supercontents & SUPERCONTENTS_SOLID)
5587                 nativecontents |= CONTENTSQ3_SOLID;
5588         if (supercontents & SUPERCONTENTS_WATER)
5589                 nativecontents |= CONTENTSQ3_WATER;
5590         if (supercontents & SUPERCONTENTS_SLIME)
5591                 nativecontents |= CONTENTSQ3_SLIME;
5592         if (supercontents & SUPERCONTENTS_LAVA)
5593                 nativecontents |= CONTENTSQ3_LAVA;
5594         if (supercontents & SUPERCONTENTS_BODY)
5595                 nativecontents |= CONTENTSQ3_BODY;
5596         if (supercontents & SUPERCONTENTS_CORPSE)
5597                 nativecontents |= CONTENTSQ3_CORPSE;
5598         if (supercontents & SUPERCONTENTS_NODROP)
5599                 nativecontents |= CONTENTSQ3_NODROP;
5600         if (supercontents & SUPERCONTENTS_PLAYERCLIP)
5601                 nativecontents |= CONTENTSQ3_PLAYERCLIP;
5602         if (supercontents & SUPERCONTENTS_MONSTERCLIP)
5603                 nativecontents |= CONTENTSQ3_MONSTERCLIP;
5604         if (supercontents & SUPERCONTENTS_DONOTENTER)
5605                 nativecontents |= CONTENTSQ3_DONOTENTER;
5606         return nativecontents;
5607 }
5608
5609 void Mod_Q3BSP_RecursiveFindNumLeafs(mnode_t *node)
5610 {
5611         int numleafs;
5612         while (node->plane)
5613         {
5614                 Mod_Q3BSP_RecursiveFindNumLeafs(node->children[0]);
5615                 node = node->children[1];
5616         }
5617         numleafs = ((mleaf_t *)node - loadmodel->brush.data_leafs) + 1;
5618         if (loadmodel->brush.num_leafs < numleafs)
5619                 loadmodel->brush.num_leafs = numleafs;
5620 }
5621
5622 void Mod_Q3BSP_Load(model_t *mod, void *buffer, void *bufferend)
5623 {
5624         int i, j, numshadowmeshtriangles;
5625         q3dheader_t *header;
5626         float corner[3], yawradius, modelradius;
5627         msurface_t *surface;
5628
5629         mod->type = mod_brushq3;
5630         mod->numframes = 2; // although alternate textures are not supported it is annoying to complain about no such frame 1
5631         mod->numskins = 1;
5632
5633         header = (q3dheader_t *)buffer;
5634
5635         i = LittleLong(header->version);
5636         if (i != Q3BSPVERSION)
5637                 Host_Error("Mod_Q3BSP_Load: %s has wrong version number (%i, should be %i)", mod->name, i, Q3BSPVERSION);
5638         mod->brush.ishlbsp = false;
5639         mod->brush.ismcbsp = false;
5640         if (loadmodel->isworldmodel)
5641         {
5642                 Cvar_SetValue("halflifebsp", mod->brush.ishlbsp);
5643                 Cvar_SetValue("mcbsp", mod->brush.ismcbsp);
5644         }
5645
5646         mod->soundfromcenter = true;
5647         mod->TraceBox = Mod_Q3BSP_TraceBox;
5648         mod->brush.SuperContentsFromNativeContents = Mod_Q3BSP_SuperContentsFromNativeContents;
5649         mod->brush.NativeContentsFromSuperContents = Mod_Q3BSP_NativeContentsFromSuperContents;
5650         mod->brush.GetPVS = Mod_Q1BSP_GetPVS;
5651         mod->brush.FatPVS = Mod_Q1BSP_FatPVS;
5652         mod->brush.BoxTouchingPVS = Mod_Q1BSP_BoxTouchingPVS;
5653         mod->brush.BoxTouchingLeafPVS = Mod_Q1BSP_BoxTouchingLeafPVS;
5654         mod->brush.BoxTouchingVisibleLeafs = Mod_Q1BSP_BoxTouchingVisibleLeafs;
5655         mod->brush.FindBoxClusters = Mod_Q1BSP_FindBoxClusters;
5656         mod->brush.LightPoint = Mod_Q3BSP_LightPoint;
5657         mod->brush.FindNonSolidLocation = Mod_Q1BSP_FindNonSolidLocation;
5658         mod->brush.PointInLeaf = Mod_Q1BSP_PointInLeaf;
5659         mod->Draw = R_Q1BSP_Draw;
5660         mod->GetLightInfo = R_Q1BSP_GetLightInfo;
5661         mod->CompileShadowVolume = R_Q1BSP_CompileShadowVolume;
5662         mod->DrawShadowVolume = R_Q1BSP_DrawShadowVolume;
5663         mod->DrawLight = R_Q1BSP_DrawLight;
5664
5665         mod_base = (unsigned char *)header;
5666
5667         // swap all the lumps
5668         header->ident = LittleLong(header->ident);
5669         header->version = LittleLong(header->version);
5670         for (i = 0;i < Q3HEADER_LUMPS;i++)
5671         {
5672                 header->lumps[i].fileofs = LittleLong(header->lumps[i].fileofs);
5673                 header->lumps[i].filelen = LittleLong(header->lumps[i].filelen);
5674         }
5675
5676         mod->brush.qw_md4sum = 0;
5677         mod->brush.qw_md4sum2 = 0;
5678         for (i = 0;i < Q3HEADER_LUMPS;i++)
5679         {
5680                 if (i == Q3LUMP_ENTITIES)
5681                         continue;
5682                 mod->brush.qw_md4sum ^= Com_BlockChecksum(mod_base + header->lumps[i].fileofs, header->lumps[i].filelen);
5683                 if (i == Q3LUMP_PVS || i == Q3LUMP_LEAFS || i == Q3LUMP_NODES)
5684                         continue;
5685                 mod->brush.qw_md4sum2 ^= Com_BlockChecksum(mod_base + header->lumps[i].fileofs, header->lumps[i].filelen);
5686         }
5687
5688         Mod_Q3BSP_LoadEntities(&header->lumps[Q3LUMP_ENTITIES]);
5689         Mod_Q3BSP_LoadTextures(&header->lumps[Q3LUMP_TEXTURES]);
5690         Mod_Q3BSP_LoadPlanes(&header->lumps[Q3LUMP_PLANES]);
5691         Mod_Q3BSP_LoadBrushSides(&header->lumps[Q3LUMP_BRUSHSIDES]);
5692         Mod_Q3BSP_LoadBrushes(&header->lumps[Q3LUMP_BRUSHES]);
5693         Mod_Q3BSP_LoadEffects(&header->lumps[Q3LUMP_EFFECTS]);
5694         Mod_Q3BSP_LoadVertices(&header->lumps[Q3LUMP_VERTICES]);
5695         Mod_Q3BSP_LoadTriangles(&header->lumps[Q3LUMP_TRIANGLES]);
5696         Mod_Q3BSP_LoadLightmaps(&header->lumps[Q3LUMP_LIGHTMAPS]);
5697         Mod_Q3BSP_LoadFaces(&header->lumps[Q3LUMP_FACES]);
5698         Mod_Q3BSP_LoadModels(&header->lumps[Q3LUMP_MODELS]);
5699         Mod_Q3BSP_LoadLeafBrushes(&header->lumps[Q3LUMP_LEAFBRUSHES]);
5700         Mod_Q3BSP_LoadLeafFaces(&header->lumps[Q3LUMP_LEAFFACES]);
5701         Mod_Q3BSP_LoadLeafs(&header->lumps[Q3LUMP_LEAFS]);
5702         Mod_Q3BSP_LoadNodes(&header->lumps[Q3LUMP_NODES]);
5703         Mod_Q3BSP_LoadLightGrid(&header->lumps[Q3LUMP_LIGHTGRID]);
5704         Mod_Q3BSP_LoadPVS(&header->lumps[Q3LUMP_PVS]);
5705         loadmodel->brush.numsubmodels = loadmodel->brushq3.num_models;
5706
5707         // the MakePortals code works fine on the q3bsp data as well
5708         Mod_Q1BSP_MakePortals();
5709
5710         // make a single combined shadow mesh to allow optimized shadow volume creation
5711         numshadowmeshtriangles = 0;
5712         for (j = 0, surface = loadmodel->data_surfaces;j < loadmodel->num_surfaces;j++, surface++)
5713         {
5714                 surface->num_firstshadowmeshtriangle = numshadowmeshtriangles;
5715                 numshadowmeshtriangles += surface->num_triangles;
5716         }
5717         loadmodel->brush.shadowmesh = Mod_ShadowMesh_Begin(loadmodel->mempool, numshadowmeshtriangles * 3, numshadowmeshtriangles, NULL, NULL, NULL, false, false, true);
5718         for (j = 0, surface = loadmodel->data_surfaces;j < loadmodel->num_surfaces;j++, surface++)
5719                 if (surface->num_triangles > 0)
5720                         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));
5721         loadmodel->brush.shadowmesh = Mod_ShadowMesh_Finish(loadmodel->mempool, loadmodel->brush.shadowmesh, false, true);
5722         Mod_BuildTriangleNeighbors(loadmodel->brush.shadowmesh->neighbor3i, loadmodel->brush.shadowmesh->element3i, loadmodel->brush.shadowmesh->numtriangles);
5723
5724         loadmodel->brush.num_leafs = 0;
5725         Mod_Q3BSP_RecursiveFindNumLeafs(loadmodel->brush.data_nodes);
5726
5727         if (loadmodel->isworldmodel)
5728         {
5729                 // clear out any stale submodels or worldmodels lying around
5730                 // if we did this clear before now, an error might abort loading and
5731                 // leave things in a bad state
5732                 Mod_RemoveStaleWorldModels(loadmodel);
5733         }
5734
5735         mod = loadmodel;
5736         for (i = 0;i < loadmodel->brush.numsubmodels;i++)
5737         {
5738                 if (i > 0)
5739                 {
5740                         char name[10];
5741                         // LordHavoc: only register submodels if it is the world
5742                         // (prevents external bsp models from replacing world submodels with
5743                         //  their own)
5744                         if (!loadmodel->isworldmodel)
5745                                 continue;
5746                         // duplicate the basic information
5747                         sprintf(name, "*%i", i);
5748                         mod = Mod_FindName(name);
5749                         *mod = *loadmodel;
5750                         strcpy(mod->name, name);
5751                         // textures and memory belong to the main model
5752                         mod->texturepool = NULL;
5753                         mod->mempool = NULL;
5754                         mod->brush.GetPVS = NULL;
5755                         mod->brush.FatPVS = NULL;
5756                         mod->brush.BoxTouchingPVS = NULL;
5757                         mod->brush.BoxTouchingLeafPVS = NULL;
5758                         mod->brush.BoxTouchingVisibleLeafs = NULL;
5759                         mod->brush.FindBoxClusters = NULL;
5760                         mod->brush.LightPoint = NULL;
5761                         mod->brush.FindNonSolidLocation = Mod_Q1BSP_FindNonSolidLocation;
5762                 }
5763                 mod->brush.submodel = i;
5764
5765                 // make the model surface list (used by shadowing/lighting)
5766                 mod->firstmodelsurface = mod->brushq3.data_models[i].firstface;
5767                 mod->nummodelsurfaces = mod->brushq3.data_models[i].numfaces;
5768                 mod->firstmodelbrush = mod->brushq3.data_models[i].firstbrush;
5769                 mod->nummodelbrushes = mod->brushq3.data_models[i].numbrushes;
5770                 mod->surfacelist = (int *)Mem_Alloc(loadmodel->mempool, mod->nummodelsurfaces * sizeof(*mod->surfacelist));
5771                 for (j = 0;j < mod->nummodelsurfaces;j++)
5772                         mod->surfacelist[j] = mod->firstmodelsurface + j;
5773
5774                 VectorCopy(mod->brushq3.data_models[i].mins, mod->normalmins);
5775                 VectorCopy(mod->brushq3.data_models[i].maxs, mod->normalmaxs);
5776                 corner[0] = max(fabs(mod->normalmins[0]), fabs(mod->normalmaxs[0]));
5777                 corner[1] = max(fabs(mod->normalmins[1]), fabs(mod->normalmaxs[1]));
5778                 corner[2] = max(fabs(mod->normalmins[2]), fabs(mod->normalmaxs[2]));
5779                 modelradius = sqrt(corner[0]*corner[0]+corner[1]*corner[1]+corner[2]*corner[2]);
5780                 yawradius = sqrt(corner[0]*corner[0]+corner[1]*corner[1]);
5781                 mod->rotatedmins[0] = mod->rotatedmins[1] = mod->rotatedmins[2] = -modelradius;
5782                 mod->rotatedmaxs[0] = mod->rotatedmaxs[1] = mod->rotatedmaxs[2] = modelradius;
5783                 mod->yawmaxs[0] = mod->yawmaxs[1] = yawradius;
5784                 mod->yawmins[0] = mod->yawmins[1] = -yawradius;
5785                 mod->yawmins[2] = mod->normalmins[2];
5786                 mod->yawmaxs[2] = mod->normalmaxs[2];
5787                 mod->radius = modelradius;
5788                 mod->radius2 = modelradius * modelradius;
5789
5790                 for (j = 0;j < mod->nummodelsurfaces;j++)
5791                         if (mod->data_surfaces[j + mod->firstmodelsurface].texture->surfaceflags & Q3SURFACEFLAG_SKY)
5792                                 break;
5793                 if (j < mod->nummodelsurfaces)
5794                         mod->DrawSky = R_Q1BSP_DrawSky;
5795         }
5796 }
5797
5798 void Mod_IBSP_Load(model_t *mod, void *buffer, void *bufferend)
5799 {
5800         int i = LittleLong(((int *)buffer)[1]);
5801         if (i == Q3BSPVERSION)
5802                 Mod_Q3BSP_Load(mod,buffer, bufferend);
5803         else if (i == Q2BSPVERSION)
5804                 Mod_Q2BSP_Load(mod,buffer, bufferend);
5805         else
5806                 Host_Error("Mod_IBSP_Load: unknown/unsupported version %i", i);
5807 }
5808
5809 void Mod_MAP_Load(model_t *mod, void *buffer, void *bufferend)
5810 {
5811         Host_Error("Mod_MAP_Load: not yet implemented");
5812 }
5813