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_picmipworld = {CVAR_SAVE, "r_picmipworld", "1", "whether gl_picmip shall apply to world textures too"};
  35 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)"};
  36 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)"};
  37 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)"};
  38 cvar_t r_subdivisions_maxtess = {0, "r_subdivisions_maxtess", "1024", "maximum number of subdivisions (prevents curves beyond a certain detail level, limits smoothing)"};
  39 cvar_t r_subdivisions_maxvertices = {0, "r_subdivisions_maxvertices", "65536", "maximum vertices allowed per subdivided curve"};
  40 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)"};
  41 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)"};
  42 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)"};
  43 cvar_t r_subdivisions_collision_maxvertices = {0, "r_subdivisions_collision_maxvertices", "4225", "maximum vertices allowed per subdivided curve"};
  44 cvar_t mod_q3bsp_curves_collisions = {0, "mod_q3bsp_curves_collisions", "1", "enables collisions with curves (SLOW)"};
  45 cvar_t mod_q3bsp_optimizedtraceline = {0, "mod_q3bsp_optimizedtraceline", "1", "whether to use optimized traceline code for line traces (as opposed to tracebox code)"};
  46 cvar_t mod_q3bsp_debugtracebrush = {0, "mod_q3bsp_debugtracebrush", "0", "selects different tracebrush bsp recursion algorithms (for debugging purposes only)"};
  47 cvar_t mod_q3bsp_lightmapmergepower = {CVAR_SAVE, "mod_q3bsp_lightmapmergepower", "4", "merges the quake3 128x128 lightmap textures into larger lightmap group textures to speed up rendering, 1 = 256x256, 2 = 512x512, 3 = 1024x1024, 4 = 2048x2048, 5 = 4096x4096, ..."};
  48
  49 static texture_t mod_q1bsp_texture_solid;
  50 static texture_t mod_q1bsp_texture_sky;
  51 static texture_t mod_q1bsp_texture_lava;
  52 static texture_t mod_q1bsp_texture_slime;
  53 static texture_t mod_q1bsp_texture_water;
  54
  55 void Mod_BrushInit(void)
  56 {
  57 //      Cvar_RegisterVariable(&r_subdivide_size);
  58         Cvar_RegisterVariable(&halflifebsp);
  59         Cvar_RegisterVariable(&mcbsp);
  60         Cvar_RegisterVariable(&r_novis);
  61         Cvar_RegisterVariable(&r_lightmaprgba);
  62         Cvar_RegisterVariable(&r_picmipworld);
  63         Cvar_RegisterVariable(&r_nosurftextures);
  64         Cvar_RegisterVariable(&r_subdivisions_tolerance);
  65         Cvar_RegisterVariable(&r_subdivisions_mintess);
  66         Cvar_RegisterVariable(&r_subdivisions_maxtess);
  67         Cvar_RegisterVariable(&r_subdivisions_maxvertices);
  68         Cvar_RegisterVariable(&r_subdivisions_collision_tolerance);
  69         Cvar_RegisterVariable(&r_subdivisions_collision_mintess);
  70         Cvar_RegisterVariable(&r_subdivisions_collision_maxtess);
  71         Cvar_RegisterVariable(&r_subdivisions_collision_maxvertices);
  72         Cvar_RegisterVariable(&mod_q3bsp_curves_collisions);
  73         Cvar_RegisterVariable(&mod_q3bsp_optimizedtraceline);
  74         Cvar_RegisterVariable(&mod_q3bsp_debugtracebrush);
  75         Cvar_RegisterVariable(&mod_q3bsp_lightmapmergepower);
  76
  77         memset(&mod_q1bsp_texture_solid, 0, sizeof(mod_q1bsp_texture_solid));
  78         strlcpy(mod_q1bsp_texture_solid.name, "solid" , sizeof(mod_q1bsp_texture_solid.name));
  79         mod_q1bsp_texture_solid.surfaceflags = 0;
  80         mod_q1bsp_texture_solid.supercontents = SUPERCONTENTS_SOLID;
  81
  82         mod_q1bsp_texture_sky = mod_q1bsp_texture_solid;
  83         strlcpy(mod_q1bsp_texture_sky.name, "sky", sizeof(mod_q1bsp_texture_sky.name));
  84         mod_q1bsp_texture_sky.surfaceflags = Q3SURFACEFLAG_SKY | Q3SURFACEFLAG_NOIMPACT | Q3SURFACEFLAG_NOMARKS | Q3SURFACEFLAG_NODLIGHT | Q3SURFACEFLAG_NOLIGHTMAP;
  85         mod_q1bsp_texture_sky.supercontents = SUPERCONTENTS_SKY | SUPERCONTENTS_NODROP;
  86
  87         mod_q1bsp_texture_lava = mod_q1bsp_texture_solid;
  88         strlcpy(mod_q1bsp_texture_lava.name, "*lava", sizeof(mod_q1bsp_texture_lava.name));
  89         mod_q1bsp_texture_lava.surfaceflags = Q3SURFACEFLAG_NOMARKS;
  90         mod_q1bsp_texture_lava.supercontents = SUPERCONTENTS_LAVA | SUPERCONTENTS_NODROP;
  91
  92         mod_q1bsp_texture_slime = mod_q1bsp_texture_solid;
  93         strlcpy(mod_q1bsp_texture_slime.name, "*slime", sizeof(mod_q1bsp_texture_slime.name));
  94         mod_q1bsp_texture_slime.surfaceflags = Q3SURFACEFLAG_NOMARKS;
  95         mod_q1bsp_texture_slime.supercontents = SUPERCONTENTS_SLIME;
  96
  97         mod_q1bsp_texture_water = mod_q1bsp_texture_solid;
  98         strlcpy(mod_q1bsp_texture_water.name, "*water", sizeof(mod_q1bsp_texture_water.name));
  99         mod_q1bsp_texture_water.surfaceflags = Q3SURFACEFLAG_NOMARKS;
 100         mod_q1bsp_texture_water.supercontents = SUPERCONTENTS_WATER;
 101 }
 102
 103 static mleaf_t *Mod_Q1BSP_PointInLeaf(model_t *model, const vec3_t p)
 104 {
 105         mnode_t *node;
 106
 107         if (model == NULL)
 108                 return NULL;
 109
 110         // LordHavoc: modified to start at first clip node,
 111         // in other words: first node of the (sub)model
 112         node = model->brush.data_nodes + model->brushq1.hulls[0].firstclipnode;
 113         while (node->plane)
 114                 node = node->children[(node->plane->type < 3 ? p[node->plane->type] : DotProduct(p,node->plane->normal)) < node->plane->dist];
 115
 116         return (mleaf_t *)node;
 117 }
 118
 119 static void Mod_Q1BSP_AmbientSoundLevelsForPoint(model_t *model, const vec3_t p, unsigned char *out, int outsize)
 120 {
 121         int i;
 122         mleaf_t *leaf;
 123         leaf = Mod_Q1BSP_PointInLeaf(model, p);
 124         if (leaf)
 125         {
 126                 i = min(outsize, (int)sizeof(leaf->ambient_sound_level));
 127                 if (i)
 128                 {
 129                         memcpy(out, leaf->ambient_sound_level, i);
 130                         out += i;
 131                         outsize -= i;
 132                 }
 133         }
 134         if (outsize)
 135                 memset(out, 0, outsize);
 136 }
 137
 138 static int Mod_Q1BSP_FindBoxClusters(model_t *model, const vec3_t mins, const vec3_t maxs, int maxclusters, int *clusterlist)
 139 {
 140         int numclusters = 0;
 141         int nodestackindex = 0;
 142         mnode_t *node, *nodestack[1024];
 143         if (!model->brush.num_pvsclusters)
 144                 return -1;
 145         node = model->brush.data_nodes;
 146         for (;;)
 147         {
 148 #if 1
 149                 if (node->plane)
 150                 {
 151                         // node - recurse down the BSP tree
 152                         int sides = BoxOnPlaneSide(mins, maxs, node->plane);
 153                         if (sides < 3)
 154                         {
 155                                 if (sides == 0)
 156                                         return -1; // ERROR: NAN bounding box!
 157                                 // box is on one side of plane, take that path
 158                                 node = node->children[sides-1];
 159                         }
 160                         else
 161                         {
 162                                 // box crosses plane, take one path and remember the other
 163                                 if (nodestackindex < 1024)
 164                                         nodestack[nodestackindex++] = node->children[0];
 165                                 node = node->children[1];
 166                         }
 167                         continue;
 168                 }
 169                 else
 170                 {
 171                         // leaf - add clusterindex to list
 172                         if (numclusters < maxclusters)
 173                                 clusterlist[numclusters] = ((mleaf_t *)node)->clusterindex;
 174                         numclusters++;
 175                 }
 176 #else
 177                 if (BoxesOverlap(mins, maxs, node->mins, node->maxs))
 178                 {
 179                         if (node->plane)
 180                         {
 181                                 if (nodestackindex < 1024)
 182                                         nodestack[nodestackindex++] = node->children[0];
 183                                 node = node->children[1];
 184                                 continue;
 185                         }
 186                         else
 187                         {
 188                                 // leaf - add clusterindex to list
 189                                 if (numclusters < maxclusters)
 190                                         clusterlist[numclusters] = ((mleaf_t *)node)->clusterindex;
 191                                 numclusters++;
 192                         }
 193                 }
 194 #endif
 195                 // try another path we didn't take earlier
 196                 if (nodestackindex == 0)
 197                         break;
 198                 node = nodestack[--nodestackindex];
 199         }
 200         // return number of clusters found (even if more than the maxclusters)
 201         return numclusters;
 202 }
 203
 204 static int Mod_Q1BSP_BoxTouchingPVS(model_t *model, const unsigned char *pvs, const vec3_t mins, const vec3_t maxs)
 205 {
 206         int nodestackindex = 0;
 207         mnode_t *node, *nodestack[1024];
 208         if (!model->brush.num_pvsclusters)
 209                 return true;
 210         node = model->brush.data_nodes;
 211         for (;;)
 212         {
 213 #if 1
 214                 if (node->plane)
 215                 {
 216                         // node - recurse down the BSP tree
 217                         int sides = BoxOnPlaneSide(mins, maxs, node->plane);
 218                         if (sides < 3)
 219                         {
 220                                 if (sides == 0)
 221                                         return -1; // ERROR: NAN bounding box!
 222                                 // box is on one side of plane, take that path
 223                                 node = node->children[sides-1];
 224                         }
 225                         else
 226                         {
 227                                 // box crosses plane, take one path and remember the other
 228                                 if (nodestackindex < 1024)
 229                                         nodestack[nodestackindex++] = node->children[0];
 230                                 node = node->children[1];
 231                         }
 232                         continue;
 233                 }
 234                 else
 235                 {
 236                         // leaf - check cluster bit
 237                         int clusterindex = ((mleaf_t *)node)->clusterindex;
 238                         if (CHECKPVSBIT(pvs, clusterindex))
 239                         {
 240                                 // it is visible, return immediately with the news
 241                                 return true;
 242                         }
 243                 }
 244 #else
 245                 if (BoxesOverlap(mins, maxs, node->mins, node->maxs))
 246                 {
 247                         if (node->plane)
 248                         {
 249                                 if (nodestackindex < 1024)
 250                                         nodestack[nodestackindex++] = node->children[0];
 251                                 node = node->children[1];
 252                                 continue;
 253                         }
 254                         else
 255                         {
 256                                 // leaf - check cluster bit
 257                                 int clusterindex = ((mleaf_t *)node)->clusterindex;
 258                                 if (CHECKPVSBIT(pvs, clusterindex))
 259                                 {
 260                                         // it is visible, return immediately with the news
 261                                         return true;
 262                                 }
 263                         }
 264                 }
 265 #endif
 266                 // nothing to see here, try another path we didn't take earlier
 267                 if (nodestackindex == 0)
 268                         break;
 269                 node = nodestack[--nodestackindex];
 270         }
 271         // it is not visible
 272         return false;
 273 }
 274
 275 static int Mod_Q1BSP_BoxTouchingLeafPVS(model_t *model, const unsigned char *pvs, const vec3_t mins, const vec3_t maxs)
 276 {
 277         int nodestackindex = 0;
 278         mnode_t *node, *nodestack[1024];
 279         if (!model->brush.num_leafs)
 280                 return true;
 281         node = model->brush.data_nodes;
 282         for (;;)
 283         {
 284 #if 1
 285                 if (node->plane)
 286                 {
 287                         // node - recurse down the BSP tree
 288                         int sides = BoxOnPlaneSide(mins, maxs, node->plane);
 289                         if (sides < 3)
 290                         {
 291                                 if (sides == 0)
 292                                         return -1; // ERROR: NAN bounding box!
 293                                 // box is on one side of plane, take that path
 294                                 node = node->children[sides-1];
 295                         }
 296                         else
 297                         {
 298                                 // box crosses plane, take one path and remember the other
 299                                 if (nodestackindex < 1024)
 300                                         nodestack[nodestackindex++] = node->children[0];
 301                                 node = node->children[1];
 302                         }
 303                         continue;
 304                 }
 305                 else
 306                 {
 307                         // leaf - check cluster bit
 308                         int clusterindex = ((mleaf_t *)node) - model->brush.data_leafs;
 309                         if (CHECKPVSBIT(pvs, clusterindex))
 310                         {
 311                                 // it is visible, return immediately with the news
 312                                 return true;
 313                         }
 314                 }
 315 #else
 316                 if (BoxesOverlap(mins, maxs, node->mins, node->maxs))
 317                 {
 318                         if (node->plane)
 319                         {
 320                                 if (nodestackindex < 1024)
 321                                         nodestack[nodestackindex++] = node->children[0];
 322                                 node = node->children[1];
 323                                 continue;
 324                         }
 325                         else
 326                         {
 327                                 // leaf - check cluster bit
 328                                 int clusterindex = ((mleaf_t *)node) - model->brush.data_leafs;
 329                                 if (CHECKPVSBIT(pvs, clusterindex))
 330                                 {
 331                                         // it is visible, return immediately with the news
 332                                         return true;
 333                                 }
 334                         }
 335                 }
 336 #endif
 337                 // nothing to see here, try another path we didn't take earlier
 338                 if (nodestackindex == 0)
 339                         break;
 340                 node = nodestack[--nodestackindex];
 341         }
 342         // it is not visible
 343         return false;
 344 }
 345
 346 static int Mod_Q1BSP_BoxTouchingVisibleLeafs(model_t *model, const unsigned char *visibleleafs, const vec3_t mins, const vec3_t maxs)
 347 {
 348         int nodestackindex = 0;
 349         mnode_t *node, *nodestack[1024];
 350         if (!model->brush.num_leafs)
 351                 return true;
 352         node = model->brush.data_nodes;
 353         for (;;)
 354         {
 355 #if 1
 356                 if (node->plane)
 357                 {
 358                         // node - recurse down the BSP tree
 359                         int sides = BoxOnPlaneSide(mins, maxs, node->plane);
 360                         if (sides < 3)
 361                         {
 362                                 if (sides == 0)
 363                                         return -1; // ERROR: NAN bounding box!
 364                                 // box is on one side of plane, take that path
 365                                 node = node->children[sides-1];
 366                         }
 367                         else
 368                         {
 369                                 // box crosses plane, take one path and remember the other
 370                                 if (nodestackindex < 1024)
 371                                         nodestack[nodestackindex++] = node->children[0];
 372                                 node = node->children[1];
 373                         }
 374                         continue;
 375                 }
 376                 else
 377                 {
 378                         // leaf - check if it is visible
 379                         if (visibleleafs[(mleaf_t *)node - model->brush.data_leafs])
 380                         {
 381                                 // it is visible, return immediately with the news
 382                                 return true;
 383                         }
 384                 }
 385 #else
 386                 if (BoxesOverlap(mins, maxs, node->mins, node->maxs))
 387                 {
 388                         if (node->plane)
 389                         {
 390                                 if (nodestackindex < 1024)
 391                                         nodestack[nodestackindex++] = node->children[0];
 392                                 node = node->children[1];
 393                                 continue;
 394                         }
 395                         else
 396                         {
 397                                 // leaf - check if it is visible
 398                                 if (visibleleafs[(mleaf_t *)node - model->brush.data_leafs])
 399                                 {
 400                                         // it is visible, return immediately with the news
 401                                         return true;
 402                                 }
 403                         }
 404                 }
 405 #endif
 406                 // nothing to see here, try another path we didn't take earlier
 407                 if (nodestackindex == 0)
 408                         break;
 409                 node = nodestack[--nodestackindex];
 410         }
 411         // it is not visible
 412         return false;
 413 }
 414
 415 typedef struct findnonsolidlocationinfo_s
 416 {
 417         vec3_t center;
 418         vec_t radius;
 419         vec3_t nudge;
 420         vec_t bestdist;
 421         model_t *model;
 422 }
 423 findnonsolidlocationinfo_t;
 424
 425 static void Mod_Q1BSP_FindNonSolidLocation_r_Leaf(findnonsolidlocationinfo_t *info, mleaf_t *leaf)
 426 {
 427         int i, surfacenum, k, *tri, *mark;
 428         float dist, f, vert[3][3], edge[3][3], facenormal[3], edgenormal[3][3], point[3];
 429         msurface_t *surface;
 430         for (surfacenum = 0, mark = leaf->firstleafsurface;surfacenum < leaf->numleafsurfaces;surfacenum++, mark++)
 431         {
 432                 surface = info->model->data_surfaces + *mark;
 433                 if (surface->texture->supercontents & SUPERCONTENTS_SOLID)
 434                 {
 435                         for (k = 0;k < surface->num_triangles;k++)
 436                         {
 437                                 tri = (info->model->surfmesh.data_element3i + 3 * surface->num_firsttriangle) + k * 3;
 438                                 VectorCopy((info->model->surfmesh.data_vertex3f + tri[0] * 3), vert[0]);
 439                                 VectorCopy((info->model->surfmesh.data_vertex3f + tri[1] * 3), vert[1]);
 440                                 VectorCopy((info->model->surfmesh.data_vertex3f + tri[2] * 3), vert[2]);
 441                                 VectorSubtract(vert[1], vert[0], edge[0]);
 442                                 VectorSubtract(vert[2], vert[1], edge[1]);
 443                                 CrossProduct(edge[1], edge[0], facenormal);
 444                                 if (facenormal[0] || facenormal[1] || facenormal[2])
 445                                 {
 446                                         VectorNormalize(facenormal);
 447                                         f = DotProduct(info->center, facenormal) - DotProduct(vert[0], facenormal);
 448                                         if (f <= info->bestdist && f >= -info->bestdist)
 449                                         {
 450                                                 VectorSubtract(vert[0], vert[2], edge[2]);
 451                                                 VectorNormalize(edge[0]);
 452                                                 VectorNormalize(edge[1]);
 453                                                 VectorNormalize(edge[2]);
 454                                                 CrossProduct(facenormal, edge[0], edgenormal[0]);
 455                                                 CrossProduct(facenormal, edge[1], edgenormal[1]);
 456                                                 CrossProduct(facenormal, edge[2], edgenormal[2]);
 457                                                 // face distance
 458                                                 if (DotProduct(info->center, edgenormal[0]) < DotProduct(vert[0], edgenormal[0])
 459                                                  && DotProduct(info->center, edgenormal[1]) < DotProduct(vert[1], edgenormal[1])
 460                                                  && DotProduct(info->center, edgenormal[2]) < DotProduct(vert[2], edgenormal[2]))
 461                                                 {
 462                                                         // we got lucky, the center is within the face
 463                                                         dist = DotProduct(info->center, facenormal) - DotProduct(vert[0], facenormal);
 464                                                         if (dist < 0)
 465                                                         {
 466                                                                 dist = -dist;
 467                                                                 if (info->bestdist > dist)
 468                                                                 {
 469                                                                         info->bestdist = dist;
 470                                                                         VectorScale(facenormal, (info->radius - -dist), info->nudge);
 471                                                                 }
 472                                                         }
 473                                                         else
 474                                                         {
 475                                                                 if (info->bestdist > dist)
 476                                                                 {
 477                                                                         info->bestdist = dist;
 478                                                                         VectorScale(facenormal, (info->radius - dist), info->nudge);
 479                                                                 }
 480                                                         }
 481                                                 }
 482                                                 else
 483                                                 {
 484                                                         // check which edge or vertex the center is nearest
 485                                                         for (i = 0;i < 3;i++)
 486                                                         {
 487                                                                 f = DotProduct(info->center, edge[i]);
 488                                                                 if (f >= DotProduct(vert[0], edge[i])
 489                                                                  && f <= DotProduct(vert[1], edge[i]))
 490                                                                 {
 491                                                                         // on edge
 492                                                                         VectorMA(info->center, -f, edge[i], point);
 493                                                                         dist = sqrt(DotProduct(point, point));
 494                                                                         if (info->bestdist > dist)
 495                                                                         {
 496                                                                                 info->bestdist = dist;
 497                                                                                 VectorScale(point, (info->radius / dist), info->nudge);
 498                                                                         }
 499                                                                         // skip both vertex checks
 500                                                                         // (both are further away than this edge)
 501                                                                         i++;
 502                                                                 }
 503                                                                 else
 504                                                                 {
 505                                                                         // not on edge, check first vertex of edge
 506                                                                         VectorSubtract(info->center, vert[i], point);
 507                                                                         dist = sqrt(DotProduct(point, point));
 508                                                                         if (info->bestdist > dist)
 509                                                                         {
 510                                                                                 info->bestdist = dist;
 511                                                                                 VectorScale(point, (info->radius / dist), info->nudge);
 512                                                                         }
 513                                                                 }
 514                                                         }
 515                                                 }
 516                                         }
 517                                 }
 518                         }
 519                 }
 520         }
 521 }
 522
 523 static void Mod_Q1BSP_FindNonSolidLocation_r(findnonsolidlocationinfo_t *info, mnode_t *node)
 524 {
 525         if (node->plane)
 526         {
 527                 float f = PlaneDiff(info->center, node->plane);
 528                 if (f >= -info->bestdist)
 529                         Mod_Q1BSP_FindNonSolidLocation_r(info, node->children[0]);
 530                 if (f <= info->bestdist)
 531                         Mod_Q1BSP_FindNonSolidLocation_r(info, node->children[1]);
 532         }
 533         else
 534         {
 535                 if (((mleaf_t *)node)->numleafsurfaces)
 536                         Mod_Q1BSP_FindNonSolidLocation_r_Leaf(info, (mleaf_t *)node);
 537         }
 538 }
 539
 540 static void Mod_Q1BSP_FindNonSolidLocation(model_t *model, const vec3_t in, vec3_t out, float radius)
 541 {
 542         int i;
 543         findnonsolidlocationinfo_t info;
 544         if (model == NULL)
 545         {
 546                 VectorCopy(in, out);
 547                 return;
 548         }
 549         VectorCopy(in, info.center);
 550         info.radius = radius;
 551         info.model = model;
 552         i = 0;
 553         do
 554         {
 555                 VectorClear(info.nudge);
 556                 info.bestdist = radius;
 557                 Mod_Q1BSP_FindNonSolidLocation_r(&info, model->brush.data_nodes + model->brushq1.hulls[0].firstclipnode);
 558                 VectorAdd(info.center, info.nudge, info.center);
 559         }
 560         while (info.bestdist < radius && ++i < 10);
 561         VectorCopy(info.center, out);
 562 }
 563
 564 int Mod_Q1BSP_SuperContentsFromNativeContents(model_t *model, int nativecontents)
 565 {
 566         switch(nativecontents)
 567         {
 568                 case CONTENTS_EMPTY:
 569                         return 0;
 570                 case CONTENTS_SOLID:
 571                         return SUPERCONTENTS_SOLID;
 572                 case CONTENTS_WATER:
 573                         return SUPERCONTENTS_WATER;
 574                 case CONTENTS_SLIME:
 575                         return SUPERCONTENTS_SLIME;
 576                 case CONTENTS_LAVA:
 577                         return SUPERCONTENTS_LAVA | SUPERCONTENTS_NODROP;
 578                 case CONTENTS_SKY:
 579                         return SUPERCONTENTS_SKY | SUPERCONTENTS_NODROP;
 580         }
 581         return 0;
 582 }
 583
 584 int Mod_Q1BSP_NativeContentsFromSuperContents(model_t *model, int supercontents)
 585 {
 586         if (supercontents & (SUPERCONTENTS_SOLID | SUPERCONTENTS_BODY))
 587                 return CONTENTS_SOLID;
 588         if (supercontents & SUPERCONTENTS_SKY)
 589                 return CONTENTS_SKY;
 590         if (supercontents & SUPERCONTENTS_LAVA)
 591                 return CONTENTS_LAVA;
 592         if (supercontents & SUPERCONTENTS_SLIME)
 593                 return CONTENTS_SLIME;
 594         if (supercontents & SUPERCONTENTS_WATER)
 595                 return CONTENTS_WATER;
 596         return CONTENTS_EMPTY;
 597 }
 598
 599 typedef struct RecursiveHullCheckTraceInfo_s
 600 {
 601         // the hull we're tracing through
 602         const hull_t *hull;
 603
 604         // the trace structure to fill in
 605         trace_t *trace;
 606
 607         // start, end, and end - start (in model space)
 608         double start[3];
 609         double end[3];
 610         double dist[3];
 611 }
 612 RecursiveHullCheckTraceInfo_t;
 613
 614 // 1/32 epsilon to keep floating point happy
 615 #define DIST_EPSILON (0.03125)
 616
 617 #define HULLCHECKSTATE_EMPTY 0
 618 #define HULLCHECKSTATE_SOLID 1
 619 #define HULLCHECKSTATE_DONE 2
 620
 621 extern cvar_t collision_prefernudgedfraction;
 622 static int Mod_Q1BSP_RecursiveHullCheck(RecursiveHullCheckTraceInfo_t *t, int num, double p1f, double p2f, double p1[3], double p2[3])
 623 {
 624         // status variables, these don't need to be saved on the stack when
 625         // recursing...  but are because this should be thread-safe
 626         // (note: tracing against a bbox is not thread-safe, yet)
 627         int ret;
 628         mplane_t *plane;
 629         double t1, t2;
 630
 631         // variables that need to be stored on the stack when recursing
 632         dclipnode_t *node;
 633         int side;
 634         double midf, mid[3];
 635
 636         // LordHavoc: a goto!  everyone flee in terror... :)
 637 loc0:
 638         // check for empty
 639         if (num < 0)
 640         {
 641                 num = Mod_Q1BSP_SuperContentsFromNativeContents(NULL, num);
 642                 if (!t->trace->startfound)
 643                 {
 644                         t->trace->startfound = true;
 645                         t->trace->startsupercontents |= num;
 646                 }
 647                 if (num & SUPERCONTENTS_LIQUIDSMASK)
 648                         t->trace->inwater = true;
 649                 if (num == 0)
 650                         t->trace->inopen = true;
 651                 if (num & SUPERCONTENTS_SOLID)
 652                         t->trace->hittexture = &mod_q1bsp_texture_solid;
 653                 else if (num & SUPERCONTENTS_SKY)
 654                         t->trace->hittexture = &mod_q1bsp_texture_sky;
 655                 else if (num & SUPERCONTENTS_LAVA)
 656                         t->trace->hittexture = &mod_q1bsp_texture_lava;
 657                 else if (num & SUPERCONTENTS_SLIME)
 658                         t->trace->hittexture = &mod_q1bsp_texture_slime;
 659                 else
 660                         t->trace->hittexture = &mod_q1bsp_texture_water;
 661                 t->trace->hitq3surfaceflags = t->trace->hittexture->surfaceflags;
 662                 t->trace->hitsupercontents = num;
 663                 if (num & t->trace->hitsupercontentsmask)
 664                 {
 665                         // if the first leaf is solid, set startsolid
 666                         if (t->trace->allsolid)
 667                                 t->trace->startsolid = true;
 668 #if COLLISIONPARANOID >= 3
 669                         Con_Print("S");
 670 #endif
 671                         return HULLCHECKSTATE_SOLID;
 672                 }
 673                 else
 674                 {
 675                         t->trace->allsolid = false;
 676 #if COLLISIONPARANOID >= 3
 677                         Con_Print("E");
 678 #endif
 679                         return HULLCHECKSTATE_EMPTY;
 680                 }
 681         }
 682
 683         // find the point distances
 684         node = t->hull->clipnodes + num;
 685
 686         plane = t->hull->planes + node->planenum;
 687         if (plane->type < 3)
 688         {
 689                 t1 = p1[plane->type] - plane->dist;
 690                 t2 = p2[plane->type] - plane->dist;
 691         }
 692         else
 693         {
 694                 t1 = DotProduct (plane->normal, p1) - plane->dist;
 695                 t2 = DotProduct (plane->normal, p2) - plane->dist;
 696         }
 697
 698         if (t1 < 0)
 699         {
 700                 if (t2 < 0)
 701                 {
 702 #if COLLISIONPARANOID >= 3
 703                         Con_Print("<");
 704 #endif
 705                         num = node->children[1];
 706                         goto loc0;
 707                 }
 708                 side = 1;
 709         }
 710         else
 711         {
 712                 if (t2 >= 0)
 713                 {
 714 #if COLLISIONPARANOID >= 3
 715                         Con_Print(">");
 716 #endif
 717                         num = node->children[0];
 718                         goto loc0;
 719                 }
 720                 side = 0;
 721         }
 722
 723         // the line intersects, find intersection point
 724         // LordHavoc: this uses the original trace for maximum accuracy
 725 #if COLLISIONPARANOID >= 3
 726         Con_Print("M");
 727 #endif
 728         if (plane->type < 3)
 729         {
 730                 t1 = t->start[plane->type] - plane->dist;
 731                 t2 = t->end[plane->type] - plane->dist;
 732         }
 733         else
 734         {
 735                 t1 = DotProduct (plane->normal, t->start) - plane->dist;
 736                 t2 = DotProduct (plane->normal, t->end) - plane->dist;
 737         }
 738
 739         midf = t1 / (t1 - t2);
 740         midf = bound(p1f, midf, p2f);
 741         VectorMA(t->start, midf, t->dist, mid);
 742
 743         // recurse both sides, front side first
 744         ret = Mod_Q1BSP_RecursiveHullCheck(t, node->children[side], p1f, midf, p1, mid);
 745         // if this side is not empty, return what it is (solid or done)
 746         if (ret != HULLCHECKSTATE_EMPTY)
 747                 return ret;
 748
 749         ret = Mod_Q1BSP_RecursiveHullCheck(t, node->children[side ^ 1], midf, p2f, mid, p2);
 750         // if other side is not solid, return what it is (empty or done)
 751         if (ret != HULLCHECKSTATE_SOLID)
 752                 return ret;
 753
 754         // front is air and back is solid, this is the impact point...
 755         if (side)
 756         {
 757                 t->trace->plane.dist = -plane->dist;
 758                 VectorNegate (plane->normal, t->trace->plane.normal);
 759         }
 760         else
 761         {
 762                 t->trace->plane.dist = plane->dist;
 763                 VectorCopy (plane->normal, t->trace->plane.normal);
 764         }
 765
 766         // calculate the true fraction
 767         t1 = DotProduct(t->trace->plane.normal, t->start) - t->trace->plane.dist;
 768         t2 = DotProduct(t->trace->plane.normal, t->end) - t->trace->plane.dist;
 769         midf = t1 / (t1 - t2);
 770         t->trace->realfraction = bound(0, midf, 1);
 771
 772         // calculate the return fraction which is nudged off the surface a bit
 773         midf = (t1 - DIST_EPSILON) / (t1 - t2);
 774         t->trace->fraction = bound(0, midf, 1);
 775
 776         if (collision_prefernudgedfraction.integer)
 777                 t->trace->realfraction = t->trace->fraction;
 778
 779 #if COLLISIONPARANOID >= 3
 780         Con_Print("D");
 781 #endif
 782         return HULLCHECKSTATE_DONE;
 783 }
 784
 785 //#if COLLISIONPARANOID < 2
 786 static int Mod_Q1BSP_RecursiveHullCheckPoint(RecursiveHullCheckTraceInfo_t *t, int num)
 787 {
 788         while (num >= 0)
 789                 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];
 790         num = Mod_Q1BSP_SuperContentsFromNativeContents(NULL, num);
 791         t->trace->startsupercontents |= num;
 792         if (num & SUPERCONTENTS_LIQUIDSMASK)
 793                 t->trace->inwater = true;
 794         if (num == 0)
 795                 t->trace->inopen = true;
 796         if (num & t->trace->hitsupercontentsmask)
 797         {
 798                 t->trace->allsolid = t->trace->startsolid = true;
 799                 return HULLCHECKSTATE_SOLID;
 800         }
 801         else
 802         {
 803                 t->trace->allsolid = t->trace->startsolid = false;
 804                 return HULLCHECKSTATE_EMPTY;
 805         }
 806 }
 807 //#endif
 808
 809 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)
 810 {
 811         // this function currently only supports same size start and end
 812         double boxsize[3];
 813         RecursiveHullCheckTraceInfo_t rhc;
 814
 815         memset(&rhc, 0, sizeof(rhc));
 816         memset(trace, 0, sizeof(trace_t));
 817         rhc.trace = trace;
 818         rhc.trace->hitsupercontentsmask = hitsupercontentsmask;
 819         rhc.trace->fraction = 1;
 820         rhc.trace->realfraction = 1;
 821         rhc.trace->allsolid = true;
 822         VectorSubtract(boxmaxs, boxmins, boxsize);
 823         if (boxsize[0] < 3)
 824                 rhc.hull = &model->brushq1.hulls[0]; // 0x0x0
 825         else if (model->brush.ismcbsp)
 826         {
 827                 if (boxsize[2] < 48) // pick the nearest of 40 or 56
 828                         rhc.hull = &model->brushq1.hulls[2]; // 16x16x40
 829                 else
 830                         rhc.hull = &model->brushq1.hulls[1]; // 16x16x56
 831         }
 832         else if (model->brush.ishlbsp)
 833         {
 834                 // LordHavoc: this has to have a minor tolerance (the .1) because of
 835                 // minor float precision errors from the box being transformed around
 836                 if (boxsize[0] < 32.1)
 837                 {
 838                         if (boxsize[2] < 54) // pick the nearest of 36 or 72
 839                                 rhc.hull = &model->brushq1.hulls[3]; // 32x32x36
 840                         else
 841                                 rhc.hull = &model->brushq1.hulls[1]; // 32x32x72
 842                 }
 843                 else
 844                         rhc.hull = &model->brushq1.hulls[2]; // 64x64x64
 845         }
 846         else
 847         {
 848                 // LordHavoc: this has to have a minor tolerance (the .1) because of
 849                 // minor float precision errors from the box being transformed around
 850                 if (boxsize[0] < 32.1)
 851                         rhc.hull = &model->brushq1.hulls[1]; // 32x32x56
 852                 else
 853                         rhc.hull = &model->brushq1.hulls[2]; // 64x64x88
 854         }
 855         VectorMAMAM(1, start, 1, boxmins, -1, rhc.hull->clip_mins, rhc.start);
 856         VectorMAMAM(1, end, 1, boxmins, -1, rhc.hull->clip_mins, rhc.end);
 857         VectorSubtract(rhc.end, rhc.start, rhc.dist);
 858 #if COLLISIONPARANOID >= 2
 859         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]);
 860         Mod_Q1BSP_RecursiveHullCheck(&rhc, rhc.hull->firstclipnode, 0, 1, rhc.start, rhc.end);
 861         {
 862
 863                 double test[3];
 864                 trace_t testtrace;
 865                 VectorLerp(rhc.start, rhc.trace->fraction, rhc.end, test);
 866                 memset(&testtrace, 0, sizeof(trace_t));
 867                 rhc.trace = &testtrace;
 868                 rhc.trace->hitsupercontentsmask = hitsupercontentsmask;
 869                 rhc.trace->fraction = 1;
 870                 rhc.trace->realfraction = 1;
 871                 rhc.trace->allsolid = true;
 872                 VectorCopy(test, rhc.start);
 873                 VectorCopy(test, rhc.end);
 874                 VectorClear(rhc.dist);
 875                 Mod_Q1BSP_RecursiveHullCheckPoint(&rhc, rhc.hull->firstclipnode);
 876                 //Mod_Q1BSP_RecursiveHullCheck(&rhc, rhc.hull->firstclipnode, 0, 1, test, test);
 877                 if (!trace->startsolid && testtrace.startsolid)
 878                         Con_Printf(" - ended in solid!\n");
 879         }
 880         Con_Print("\n");
 881 #else
 882         if (VectorLength2(rhc.dist))
 883                 Mod_Q1BSP_RecursiveHullCheck(&rhc, rhc.hull->firstclipnode, 0, 1, rhc.start, rhc.end);
 884         else
 885                 Mod_Q1BSP_RecursiveHullCheckPoint(&rhc, rhc.hull->firstclipnode);
 886 #endif
 887 }
 888
 889 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)
 890 {
 891 #if 1
 892         colbrushf_t cbox;
 893         colplanef_t cbox_planes[6];
 894         cbox.supercontents = boxsupercontents;
 895         cbox.numplanes = 6;
 896         cbox.numpoints = 0;
 897         cbox.numtriangles = 0;
 898         cbox.planes = cbox_planes;
 899         cbox.points = NULL;
 900         cbox.elements = NULL;
 901         cbox.markframe = 0;
 902         cbox.mins[0] = 0;
 903         cbox.mins[1] = 0;
 904         cbox.mins[2] = 0;
 905         cbox.maxs[0] = 0;
 906         cbox.maxs[1] = 0;
 907         cbox.maxs[2] = 0;
 908         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];
 909         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];
 910         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];
 911         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];
 912         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];
 913         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];
 914         cbox_planes[0].q3surfaceflags = boxq3surfaceflags;cbox_planes[0].texture = boxtexture;
 915         cbox_planes[1].q3surfaceflags = boxq3surfaceflags;cbox_planes[1].texture = boxtexture;
 916         cbox_planes[2].q3surfaceflags = boxq3surfaceflags;cbox_planes[2].texture = boxtexture;
 917         cbox_planes[3].q3surfaceflags = boxq3surfaceflags;cbox_planes[3].texture = boxtexture;
 918         cbox_planes[4].q3surfaceflags = boxq3surfaceflags;cbox_planes[4].texture = boxtexture;
 919         cbox_planes[5].q3surfaceflags = boxq3surfaceflags;cbox_planes[5].texture = boxtexture;
 920         memset(trace, 0, sizeof(trace_t));
 921         trace->hitsupercontentsmask = hitsupercontentsmask;
 922         trace->fraction = 1;
 923         trace->realfraction = 1;
 924         Collision_TraceLineBrushFloat(trace, start, end, &cbox, &cbox);
 925 #else
 926         RecursiveHullCheckTraceInfo_t rhc;
 927         static hull_t box_hull;
 928         static dclipnode_t box_clipnodes[6];
 929         static mplane_t box_planes[6];
 930         // fill in a default trace
 931         memset(&rhc, 0, sizeof(rhc));
 932         memset(trace, 0, sizeof(trace_t));
 933         //To keep everything totally uniform, bounding boxes are turned into small
 934         //BSP trees instead of being compared directly.
 935         // create a temp hull from bounding box sizes
 936         box_planes[0].dist = cmaxs[0] - mins[0];
 937         box_planes[1].dist = cmins[0] - maxs[0];
 938         box_planes[2].dist = cmaxs[1] - mins[1];
 939         box_planes[3].dist = cmins[1] - maxs[1];
 940         box_planes[4].dist = cmaxs[2] - mins[2];
 941         box_planes[5].dist = cmins[2] - maxs[2];
 942 #if COLLISIONPARANOID >= 3
 943         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]);
 944 #endif
 945
 946         if (box_hull.clipnodes == NULL)
 947         {
 948                 int i, side;
 949
 950                 //Set up the planes and clipnodes so that the six floats of a bounding box
 951                 //can just be stored out and get a proper hull_t structure.
 952
 953                 box_hull.clipnodes = box_clipnodes;
 954                 box_hull.planes = box_planes;
 955                 box_hull.firstclipnode = 0;
 956                 box_hull.lastclipnode = 5;
 957
 958                 for (i = 0;i < 6;i++)
 959                 {
 960                         box_clipnodes[i].planenum = i;
 961
 962                         side = i&1;
 963
 964                         box_clipnodes[i].children[side] = CONTENTS_EMPTY;
 965                         if (i != 5)
 966                                 box_clipnodes[i].children[side^1] = i + 1;
 967                         else
 968                                 box_clipnodes[i].children[side^1] = CONTENTS_SOLID;
 969
 970                         box_planes[i].type = i>>1;
 971                         box_planes[i].normal[i>>1] = 1;
 972                 }
 973         }
 974
 975         // trace a line through the generated clipping hull
 976         //rhc.boxsupercontents = boxsupercontents;
 977         rhc.hull = &box_hull;
 978         rhc.trace = trace;
 979         rhc.trace->hitsupercontentsmask = hitsupercontentsmask;
 980         rhc.trace->fraction = 1;
 981         rhc.trace->realfraction = 1;
 982         rhc.trace->allsolid = true;
 983         VectorCopy(start, rhc.start);
 984         VectorCopy(end, rhc.end);
 985         VectorSubtract(rhc.end, rhc.start, rhc.dist);
 986         Mod_Q1BSP_RecursiveHullCheck(&rhc, rhc.hull->firstclipnode, 0, 1, rhc.start, rhc.end);
 987         //VectorMA(rhc.start, rhc.trace->fraction, rhc.dist, rhc.trace->endpos);
 988         if (rhc.trace->startsupercontents)
 989                 rhc.trace->startsupercontents = boxsupercontents;
 990 #endif
 991 }
 992
 993 static int Mod_Q1BSP_TraceLineOfSight_RecursiveNodeCheck(mnode_t *node, double p1[3], double p2[3])
 994 {
 995         double t1, t2;
 996         double midf, mid[3];
 997         int ret, side;
 998
 999         // check for empty
1000         while (node->plane)
1001         {
1002                 // find the point distances
1003                 mplane_t *plane = node->plane;
1004                 if (plane->type < 3)
1005                 {
1006                         t1 = p1[plane->type] - plane->dist;
1007                         t2 = p2[plane->type] - plane->dist;
1008                 }
1009                 else
1010                 {
1011                         t1 = DotProduct (plane->normal, p1) - plane->dist;
1012                         t2 = DotProduct (plane->normal, p2) - plane->dist;
1013                 }
1014
1015                 if (t1 < 0)
1016                 {
1017                         if (t2 < 0)
1018                         {
1019                                 node = node->children[1];
1020                                 continue;
1021                         }
1022                         side = 1;
1023                 }
1024                 else
1025                 {
1026                         if (t2 >= 0)
1027                         {
1028                                 node = node->children[0];
1029                                 continue;
1030                         }
1031                         side = 0;
1032                 }
1033
1034                 midf = t1 / (t1 - t2);
1035                 VectorLerp(p1, midf, p2, mid);
1036
1037                 // recurse both sides, front side first
1038                 // return 2 if empty is followed by solid (hit something)
1039                 // do not return 2 if both are solid or both empty,
1040                 // or if start is solid and end is empty
1041                 // as these degenerate cases usually indicate the eye is in solid and
1042                 // should see the target point anyway
1043                 ret = Mod_Q1BSP_TraceLineOfSight_RecursiveNodeCheck(node->children[side    ], p1, mid);
1044                 if (ret != 0)
1045                         return ret;
1046                 ret = Mod_Q1BSP_TraceLineOfSight_RecursiveNodeCheck(node->children[side ^ 1], mid, p2);
1047                 if (ret != 1)
1048                         return ret;
1049                 return 2;
1050         }
1051         return ((mleaf_t *)node)->clusterindex < 0;
1052 }
1053
1054 static qboolean Mod_Q1BSP_TraceLineOfSight(struct model_s *model, const vec3_t start, const vec3_t end)
1055 {
1056         // this function currently only supports same size start and end
1057         double tracestart[3], traceend[3];
1058         VectorCopy(start, tracestart);
1059         VectorCopy(end, traceend);
1060         return Mod_Q1BSP_TraceLineOfSight_RecursiveNodeCheck(model->brush.data_nodes, tracestart, traceend) != 2;
1061 }
1062
1063 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)
1064 {
1065         int side;
1066         float front, back;
1067         float mid, distz = endz - startz;
1068
1069 loc0:
1070         if (!node->plane)
1071                 return false;           // didn't hit anything
1072
1073         switch (node->plane->type)
1074         {
1075         case PLANE_X:
1076                 node = node->children[x < node->plane->dist];
1077                 goto loc0;
1078         case PLANE_Y:
1079                 node = node->children[y < node->plane->dist];
1080                 goto loc0;
1081         case PLANE_Z:
1082                 side = startz < node->plane->dist;
1083                 if ((endz < node->plane->dist) == side)
1084                 {
1085                         node = node->children[side];
1086                         goto loc0;
1087                 }
1088                 // found an intersection
1089                 mid = node->plane->dist;
1090                 break;
1091         default:
1092                 back = front = x * node->plane->normal[0] + y * node->plane->normal[1];
1093                 front += startz * node->plane->normal[2];
1094                 back += endz * node->plane->normal[2];
1095                 side = front < node->plane->dist;
1096                 if ((back < node->plane->dist) == side)
1097                 {
1098                         node = node->children[side];
1099                         goto loc0;
1100                 }
1101                 // found an intersection
1102                 mid = startz + distz * (front - node->plane->dist) / (front - back);
1103                 break;
1104         }
1105
1106         // go down front side
1107         if (node->children[side]->plane && Mod_Q1BSP_LightPoint_RecursiveBSPNode(model, ambientcolor, diffusecolor, diffusenormal, node->children[side], x, y, startz, mid))
1108                 return true;    // hit something
1109         else
1110         {
1111                 // check for impact on this node
1112                 if (node->numsurfaces)
1113                 {
1114                         int i, ds, dt;
1115                         msurface_t *surface;
1116
1117                         surface = model->data_surfaces + node->firstsurface;
1118                         for (i = 0;i < node->numsurfaces;i++, surface++)
1119                         {
1120                                 if (!(surface->texture->basematerialflags & MATERIALFLAG_WALL) || !surface->lightmapinfo->samples)
1121                                         continue;       // no lightmaps
1122
1123                                 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];
1124                                 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];
1125
1126                                 if (ds >= 0 && ds < surface->lightmapinfo->extents[0] && dt >= 0 && dt < surface->lightmapinfo->extents[1])
1127                                 {
1128                                         unsigned char *lightmap;
1129                                         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;
1130                                         lmwidth = ((surface->lightmapinfo->extents[0]>>4)+1);
1131                                         lmheight = ((surface->lightmapinfo->extents[1]>>4)+1);
1132                                         line3 = lmwidth * 3; // LordHavoc: *3 for colored lighting
1133                                         size3 = lmwidth * lmheight * 3; // LordHavoc: *3 for colored lighting
1134
1135                                         lightmap = surface->lightmapinfo->samples + ((dt>>4) * lmwidth + (ds>>4))*3; // LordHavoc: *3 for colored lighting
1136
1137                                         for (maps = 0;maps < MAXLIGHTMAPS && surface->lightmapinfo->styles[maps] != 255;maps++)
1138                                         {
1139                                                 scale = r_refdef.lightstylevalue[surface->lightmapinfo->styles[maps]];
1140                                                 r00 += lightmap[      0] * scale;g00 += lightmap[      1] * scale;b00 += lightmap[      2] * scale;
1141                                                 r01 += lightmap[      3] * scale;g01 += lightmap[      4] * scale;b01 += lightmap[      5] * scale;
1142                                                 r10 += lightmap[line3+0] * scale;g10 += lightmap[line3+1] * scale;b10 += lightmap[line3+2] * scale;
1143                                                 r11 += lightmap[line3+3] * scale;g11 += lightmap[line3+4] * scale;b11 += lightmap[line3+5] * scale;
1144                                                 lightmap += size3;
1145                                         }
1146
1147 /*
1148 LordHavoc: here's the readable version of the interpolation
1149 code, not quite as easy for the compiler to optimize...
1150
1151 dsfrac is the X position in the lightmap pixel, * 16
1152 dtfrac is the Y position in the lightmap pixel, * 16
1153 r00 is top left corner, r01 is top right corner
1154 r10 is bottom left corner, r11 is bottom right corner
1155 g and b are the same layout.
1156 r0 and r1 are the top and bottom intermediate results
1157
1158 first we interpolate the top two points, to get the top
1159 edge sample
1160
1161         r0 = (((r01-r00) * dsfrac) >> 4) + r00;
1162         g0 = (((g01-g00) * dsfrac) >> 4) + g00;
1163         b0 = (((b01-b00) * dsfrac) >> 4) + b00;
1164
1165 then we interpolate the bottom two points, to get the
1166 bottom edge sample
1167
1168         r1 = (((r11-r10) * dsfrac) >> 4) + r10;
1169         g1 = (((g11-g10) * dsfrac) >> 4) + g10;
1170         b1 = (((b11-b10) * dsfrac) >> 4) + b10;
1171
1172 then we interpolate the top and bottom samples to get the
1173 middle sample (the one which was requested)
1174
1175         r = (((r1-r0) * dtfrac) >> 4) + r0;
1176         g = (((g1-g0) * dtfrac) >> 4) + g0;
1177         b = (((b1-b0) * dtfrac) >> 4) + b0;
1178 */
1179
1180                                         ambientcolor[0] += (float) ((((((((r11-r10) * dsfrac) >> 4) + r10)-((((r01-r00) * dsfrac) >> 4) + r00)) * dtfrac) >> 4) + ((((r01-r00) * dsfrac) >> 4) + r00)) * (1.0f / 32768.0f);
1181                                         ambientcolor[1] += (float) ((((((((g11-g10) * dsfrac) >> 4) + g10)-((((g01-g00) * dsfrac) >> 4) + g00)) * dtfrac) >> 4) + ((((g01-g00) * dsfrac) >> 4) + g00)) * (1.0f / 32768.0f);
1182                                         ambientcolor[2] += (float) ((((((((b11-b10) * dsfrac) >> 4) + b10)-((((b01-b00) * dsfrac) >> 4) + b00)) * dtfrac) >> 4) + ((((b01-b00) * dsfrac) >> 4) + b00)) * (1.0f / 32768.0f);
1183                                         return true; // success
1184                                 }
1185                         }
1186                 }
1187
1188                 // go down back side
1189                 node = node->children[side ^ 1];
1190                 startz = mid;
1191                 distz = endz - startz;
1192                 goto loc0;
1193         }
1194 }
1195
1196 void Mod_Q1BSP_LightPoint(model_t *model, const vec3_t p, vec3_t ambientcolor, vec3_t diffusecolor, vec3_t diffusenormal)
1197 {
1198         // pretend lighting is coming down from above (due to lack of a lightgrid to know primary lighting direction)
1199         VectorSet(diffusenormal, 0, 0, 1);
1200
1201         if (!model->brushq1.lightdata)
1202         {
1203                 VectorSet(ambientcolor, 1, 1, 1);
1204                 VectorSet(diffusecolor, 0, 0, 0);
1205                 return;
1206         }
1207
1208         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);
1209 }
1210
1211 static void Mod_Q1BSP_DecompressVis(const unsigned char *in, const unsigned char *inend, unsigned char *out, unsigned char *outend)
1212 {
1213         int c;
1214         unsigned char *outstart = out;
1215         while (out < outend)
1216         {
1217                 if (in == inend)
1218                 {
1219                         Con_Printf("Mod_Q1BSP_DecompressVis: input underrun on model \"%s\" (decompressed %i of %i output bytes)\n", loadmodel->name, (int)(out - outstart), (int)(outend - outstart));
1220                         return;
1221                 }
1222                 c = *in++;
1223                 if (c)
1224                         *out++ = c;
1225                 else
1226                 {
1227                         if (in == inend)
1228                         {
1229                                 Con_Printf("Mod_Q1BSP_DecompressVis: input underrun (during zero-run) on model \"%s\" (decompressed %i of %i output bytes)\n", loadmodel->name, (int)(out - outstart), (int)(outend - outstart));
1230                                 return;
1231                         }
1232                         for (c = *in++;c > 0;c--)
1233                         {
1234                                 if (out == outend)
1235                                 {
1236                                         Con_Printf("Mod_Q1BSP_DecompressVis: output overrun on model \"%s\" (decompressed %i of %i output bytes)\n", loadmodel->name, (int)(out - outstart), (int)(outend - outstart));
1237                                         return;
1238                                 }
1239                                 *out++ = 0;
1240                         }
1241                 }
1242         }
1243 }
1244
1245 /*
1246 =============
1247 R_Q1BSP_LoadSplitSky
1248
1249 A sky texture is 256*128, with the right side being a masked overlay
1250 ==============
1251 */
1252 void R_Q1BSP_LoadSplitSky (unsigned char *src, int width, int height, int bytesperpixel)
1253 {
1254         int i, j;
1255         unsigned solidpixels[128*128], alphapixels[128*128];
1256
1257         // allocate a texture pool if we need it
1258         if (loadmodel->texturepool == NULL && cls.state != ca_dedicated)
1259                 loadmodel->texturepool = R_AllocTexturePool();
1260
1261         // if sky isn't the right size, just use it as a solid layer
1262         if (width != 256 || height != 128)
1263         {
1264                 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);
1265                 loadmodel->brush.alphaskytexture = NULL;
1266                 return;
1267         }
1268
1269         if (bytesperpixel == 4)
1270         {
1271                 for (i = 0;i < 128;i++)
1272                 {
1273                         for (j = 0;j < 128;j++)
1274                         {
1275                                 solidpixels[(i*128) + j] = ((unsigned *)src)[i*256+j+128];
1276                                 alphapixels[(i*128) + j] = ((unsigned *)src)[i*256+j];
1277                         }
1278                 }
1279         }
1280         else
1281         {
1282                 // make an average value for the back to avoid
1283                 // a fringe on the top level
1284                 int p, r, g, b;
1285                 union
1286                 {
1287                         unsigned int i;
1288                         unsigned char b[4];
1289                 }
1290                 rgba;
1291                 r = g = b = 0;
1292                 for (i = 0;i < 128;i++)
1293                 {
1294                         for (j = 0;j < 128;j++)
1295                         {
1296                                 rgba.i = palette_complete[src[i*256 + j + 128]];
1297                                 r += rgba.b[0];
1298                                 g += rgba.b[1];
1299                                 b += rgba.b[2];
1300                         }
1301                 }
1302                 rgba.b[0] = r/(128*128);
1303                 rgba.b[1] = g/(128*128);
1304                 rgba.b[2] = b/(128*128);
1305                 rgba.b[3] = 0;
1306                 for (i = 0;i < 128;i++)
1307                 {
1308                         for (j = 0;j < 128;j++)
1309                         {
1310                                 solidpixels[(i*128) + j] = palette_complete[src[i*256 + j + 128]];
1311                                 alphapixels[(i*128) + j] = (p = src[i*256 + j]) ? palette_complete[p] : rgba.i;
1312                         }
1313                 }
1314         }
1315
1316         loadmodel->brush.solidskytexture = R_LoadTexture2D(loadmodel->texturepool, "sky_solidtexture", 128, 128, (unsigned char *) solidpixels, TEXTYPE_RGBA, TEXF_PRECACHE, NULL);
1317         loadmodel->brush.alphaskytexture = R_LoadTexture2D(loadmodel->texturepool, "sky_alphatexture", 128, 128, (unsigned char *) alphapixels, TEXTYPE_RGBA, TEXF_ALPHA | TEXF_PRECACHE, NULL);
1318 }
1319
1320 static void Mod_Q1BSP_LoadTextures(lump_t *l)
1321 {
1322         int i, j, k, num, max, altmax, mtwidth, mtheight, *dofs, incomplete;
1323         skinframe_t *skinframe;
1324         miptex_t *dmiptex;
1325         texture_t *tx, *tx2, *anims[10], *altanims[10];
1326         dmiptexlump_t *m;
1327         unsigned char *data, *mtdata;
1328         const char *s;
1329         char mapname[MAX_QPATH], name[MAX_QPATH];
1330
1331         loadmodel->data_textures = NULL;
1332
1333         // add two slots for notexture walls and notexture liquids
1334         if (l->filelen)
1335         {
1336                 m = (dmiptexlump_t *)(mod_base + l->fileofs);
1337                 m->nummiptex = LittleLong (m->nummiptex);
1338                 loadmodel->num_textures = m->nummiptex + 2;
1339                 loadmodel->num_texturesperskin = loadmodel->num_textures;
1340         }
1341         else
1342         {
1343                 m = NULL;
1344                 loadmodel->num_textures = 2;
1345                 loadmodel->num_texturesperskin = loadmodel->num_textures;
1346         }
1347
1348         loadmodel->data_textures = (texture_t *)Mem_Alloc(loadmodel->mempool, loadmodel->num_textures * sizeof(texture_t));
1349
1350         // fill out all slots with notexture
1351         if (cls.state != ca_dedicated)
1352                 skinframe = R_SkinFrame_LoadMissing();
1353         else
1354                 skinframe = NULL;
1355         for (i = 0, tx = loadmodel->data_textures;i < loadmodel->num_textures;i++, tx++)
1356         {
1357                 strlcpy(tx->name, "NO TEXTURE FOUND", sizeof(tx->name));
1358                 tx->width = 16;
1359                 tx->height = 16;
1360                 if (cls.state != ca_dedicated)
1361                 {
1362                         tx->numskinframes = 1;
1363                         tx->skinframerate = 1;
1364                         tx->skinframes[0] = skinframe;
1365                         tx->currentskinframe = tx->skinframes[0];
1366                         tx->basematerialflags = 0;
1367                 }
1368                 if (i == loadmodel->num_textures - 1)
1369                 {
1370                         tx->basematerialflags |= MATERIALFLAG_WATER | MATERIALFLAG_LIGHTBOTHSIDES | MATERIALFLAG_NOSHADOW;
1371                         tx->supercontents = mod_q1bsp_texture_water.supercontents;
1372                         tx->surfaceflags = mod_q1bsp_texture_water.surfaceflags;
1373                 }
1374                 else
1375                 {
1376                         tx->basematerialflags |= MATERIALFLAG_WALL;
1377                         tx->supercontents = mod_q1bsp_texture_solid.supercontents;
1378                         tx->surfaceflags = mod_q1bsp_texture_solid.surfaceflags;
1379                 }
1380                 tx->currentframe = tx;
1381         }
1382
1383         if (!m)
1384                 return;
1385
1386         s = loadmodel->name;
1387         if (!strncasecmp(s, "maps/", 5))
1388                 s += 5;
1389         FS_StripExtension(s, mapname, sizeof(mapname));
1390
1391         // just to work around bounds checking when debugging with it (array index out of bounds error thing)
1392         dofs = m->dataofs;
1393         // LordHavoc: mostly rewritten map texture loader
1394         for (i = 0;i < m->nummiptex;i++)
1395         {
1396                 dofs[i] = LittleLong(dofs[i]);
1397                 if (dofs[i] == -1 || r_nosurftextures.integer)
1398                         continue;
1399                 dmiptex = (miptex_t *)((unsigned char *)m + dofs[i]);
1400
1401                 // make sure name is no more than 15 characters
1402                 for (j = 0;dmiptex->name[j] && j < 15;j++)
1403                         name[j] = dmiptex->name[j];
1404                 name[j] = 0;
1405
1406                 mtwidth = LittleLong(dmiptex->width);
1407                 mtheight = LittleLong(dmiptex->height);
1408                 mtdata = NULL;
1409                 j = LittleLong(dmiptex->offsets[0]);
1410                 if (j)
1411                 {
1412                         // texture included
1413                         if (j < 40 || j + mtwidth * mtheight > l->filelen)
1414                         {
1415                                 Con_Printf("Texture \"%s\" in \"%s\"is corrupt or incomplete\n", dmiptex->name, loadmodel->name);
1416                                 continue;
1417                         }
1418                         mtdata = (unsigned char *)dmiptex + j;
1419                 }
1420
1421                 if ((mtwidth & 15) || (mtheight & 15))
1422                         Con_Printf("warning: texture \"%s\" in \"%s\" is not 16 aligned\n", dmiptex->name, loadmodel->name);
1423
1424                 // LordHavoc: force all names to lowercase
1425                 for (j = 0;name[j];j++)
1426                         if (name[j] >= 'A' && name[j] <= 'Z')
1427                                 name[j] += 'a' - 'A';
1428
1429                 tx = loadmodel->data_textures + i;
1430                 strlcpy(tx->name, name, sizeof(tx->name));
1431                 tx->width = mtwidth;
1432                 tx->height = mtheight;
1433
1434                 if (!tx->name[0])
1435                 {
1436                         sprintf(tx->name, "unnamed%i", i);
1437                         Con_Printf("warning: unnamed texture in %s, renaming to %s\n", loadmodel->name, tx->name);
1438                 }
1439
1440                 if (tx->name[0] == '*')
1441                 {
1442                         if (!strncmp(tx->name, "*lava", 5))
1443                         {
1444                                 tx->supercontents = mod_q1bsp_texture_lava.supercontents;
1445                                 tx->surfaceflags = mod_q1bsp_texture_lava.surfaceflags;
1446                         }
1447                         else if (!strncmp(tx->name, "*slime", 6))
1448                         {
1449                                 tx->supercontents = mod_q1bsp_texture_slime.supercontents;
1450                                 tx->surfaceflags = mod_q1bsp_texture_slime.surfaceflags;
1451                         }
1452                         else
1453                         {
1454                                 tx->supercontents = mod_q1bsp_texture_water.supercontents;
1455                                 tx->surfaceflags = mod_q1bsp_texture_water.surfaceflags;
1456                         }
1457                 }
1458                 else if (!strncmp(tx->name, "sky", 3))
1459                 {
1460                         tx->supercontents = mod_q1bsp_texture_sky.supercontents;
1461                         tx->surfaceflags = mod_q1bsp_texture_sky.surfaceflags;
1462                 }
1463                 else
1464                 {
1465                         tx->supercontents = mod_q1bsp_texture_solid.supercontents;
1466                         tx->surfaceflags = mod_q1bsp_texture_solid.surfaceflags;
1467                 }
1468
1469                 if (cls.state != ca_dedicated)
1470                 {
1471                         // LordHavoc: HL sky textures are entirely different than quake
1472                         if (!loadmodel->brush.ishlbsp && !strncmp(tx->name, "sky", 3) && mtwidth == 256 && mtheight == 128)
1473                         {
1474                                 if (loadmodel->isworldmodel)
1475                                 {
1476                                         data = loadimagepixels(tx->name, false, 0, 0);
1477                                         if (data)
1478                                         {
1479                                                 R_Q1BSP_LoadSplitSky(data, image_width, image_height, 4);
1480                                                 Mem_Free(data);
1481                                         }
1482                                         else if (mtdata != NULL)
1483                                                 R_Q1BSP_LoadSplitSky(mtdata, mtwidth, mtheight, 1);
1484                                 }
1485                         }
1486                         else
1487                         {
1488                                 skinframe = R_SkinFrame_LoadExternal(gamemode == GAME_TENEBRAE ? tx->name : va("textures/%s/%s", mapname, tx->name), TEXF_MIPMAP | TEXF_ALPHA | TEXF_PRECACHE | (r_picmipworld.integer ? TEXF_PICMIP : 0), false);
1489                                 if (!skinframe)
1490                                         skinframe = R_SkinFrame_LoadExternal(gamemode == GAME_TENEBRAE ? tx->name : va("textures/%s", tx->name), TEXF_MIPMAP | TEXF_ALPHA | TEXF_PRECACHE | (r_picmipworld.integer ? TEXF_PICMIP : 0), false);
1491                                 if (!skinframe)
1492                                 {
1493                                         // did not find external texture, load it from the bsp or wad3
1494                                         if (loadmodel->brush.ishlbsp)
1495                                         {
1496                                                 // internal texture overrides wad
1497                                                 unsigned char *pixels, *freepixels;
1498                                                 pixels = freepixels = NULL;
1499                                                 if (mtdata)
1500                                                         pixels = W_ConvertWAD3Texture(dmiptex);
1501                                                 if (pixels == NULL)
1502                                                         pixels = freepixels = W_GetTexture(tx->name);
1503                                                 if (pixels != NULL)
1504                                                 {
1505                                                         tx->width = image_width;
1506                                                         tx->height = image_height;
1507                                                         skinframe = R_SkinFrame_LoadInternal(tx->name, TEXF_MIPMAP | TEXF_ALPHA | TEXF_PRECACHE | (r_picmipworld.integer ? TEXF_PICMIP : 0), false, false, pixels, image_width, image_height, 32, NULL, NULL);
1508                                                 }
1509                                                 if (freepixels)
1510                                                         Mem_Free(freepixels);
1511                                         }
1512                                         else if (mtdata) // texture included
1513                                                 skinframe = R_SkinFrame_LoadInternal(tx->name, TEXF_MIPMAP | TEXF_PRECACHE | (r_picmipworld.integer ? TEXF_PICMIP : 0), false, r_fullbrights.integer, mtdata, tx->width, tx->height, 8, NULL, NULL);
1514                                 }
1515                                 // if skinframe is still NULL the "missing" texture will be used
1516                                 if (skinframe)
1517                                         tx->skinframes[0] = skinframe;
1518                         }
1519
1520                         tx->basematerialflags = 0;
1521                         if (tx->name[0] == '*')
1522                         {
1523                                 // LordHavoc: some turbulent textures should not be affected by wateralpha
1524                                 if (strncmp(tx->name,"*lava",5)
1525                                  && strncmp(tx->name,"*teleport",9)
1526                                  && strncmp(tx->name,"*rift",5)) // Scourge of Armagon texture
1527                                         tx->basematerialflags |= MATERIALFLAG_WATERALPHA | MATERIALFLAG_NOSHADOW;
1528                                 tx->basematerialflags |= MATERIALFLAG_WATER | MATERIALFLAG_LIGHTBOTHSIDES | MATERIALFLAG_NOSHADOW;
1529                         }
1530                         else if (!strncmp(tx->name, "sky", 3))
1531                                 tx->basematerialflags |= MATERIALFLAG_SKY | MATERIALFLAG_NOSHADOW;
1532                         else
1533                                 tx->basematerialflags |= MATERIALFLAG_WALL;
1534                         if (tx->skinframes[0] && tx->skinframes[0]->fog)
1535                                 tx->basematerialflags |= MATERIALFLAG_ALPHA | MATERIALFLAG_BLENDED | MATERIALFLAG_NOSHADOW;
1536
1537                         // start out with no animation
1538                         tx->currentframe = tx;
1539                         tx->currentskinframe = tx->skinframes[0];
1540                 }
1541         }
1542
1543         // sequence the animations
1544         for (i = 0;i < m->nummiptex;i++)
1545         {
1546                 tx = loadmodel->data_textures + i;
1547                 if (!tx || tx->name[0] != '+' || tx->name[1] == 0 || tx->name[2] == 0)
1548                         continue;
1549                 if (tx->anim_total[0] || tx->anim_total[1])
1550                         continue;       // already sequenced
1551
1552                 // find the number of frames in the animation
1553                 memset(anims, 0, sizeof(anims));
1554                 memset(altanims, 0, sizeof(altanims));
1555
1556                 for (j = i;j < m->nummiptex;j++)
1557                 {
1558                         tx2 = loadmodel->data_textures + j;
1559                         if (!tx2 || tx2->name[0] != '+' || strcmp(tx2->name+2, tx->name+2))
1560                                 continue;
1561
1562                         num = tx2->name[1];
1563                         if (num >= '0' && num <= '9')
1564                                 anims[num - '0'] = tx2;
1565                         else if (num >= 'a' && num <= 'j')
1566                                 altanims[num - 'a'] = tx2;
1567                         else
1568                                 Con_Printf("Bad animating texture %s\n", tx->name);
1569                 }
1570
1571                 max = altmax = 0;
1572                 for (j = 0;j < 10;j++)
1573                 {
1574                         if (anims[j])
1575                                 max = j + 1;
1576                         if (altanims[j])
1577                                 altmax = j + 1;
1578                 }
1579                 //Con_Printf("linking animation %s (%i:%i frames)\n\n", tx->name, max, altmax);
1580
1581                 incomplete = false;
1582                 for (j = 0;j < max;j++)
1583                 {
1584                         if (!anims[j])
1585                         {
1586                                 Con_Printf("Missing frame %i of %s\n", j, tx->name);
1587                                 incomplete = true;
1588                         }
1589                 }
1590                 for (j = 0;j < altmax;j++)
1591                 {
1592                         if (!altanims[j])
1593                         {
1594                                 Con_Printf("Missing altframe %i of %s\n", j, tx->name);
1595                                 incomplete = true;
1596                         }
1597                 }
1598                 if (incomplete)
1599                         continue;
1600
1601                 if (altmax < 1)
1602                 {
1603                         // if there is no alternate animation, duplicate the primary
1604                         // animation into the alternate
1605                         altmax = max;
1606                         for (k = 0;k < 10;k++)
1607                                 altanims[k] = anims[k];
1608                 }
1609
1610                 // link together the primary animation
1611                 for (j = 0;j < max;j++)
1612                 {
1613                         tx2 = anims[j];
1614                         tx2->animated = true;
1615                         tx2->anim_total[0] = max;
1616                         tx2->anim_total[1] = altmax;
1617                         for (k = 0;k < 10;k++)
1618                         {
1619                                 tx2->anim_frames[0][k] = anims[k];
1620                                 tx2->anim_frames[1][k] = altanims[k];
1621                         }
1622                 }
1623
1624                 // if there really is an alternate anim...
1625                 if (anims[0] != altanims[0])
1626                 {
1627                         // link together the alternate animation
1628                         for (j = 0;j < altmax;j++)
1629                         {
1630                                 tx2 = altanims[j];
1631                                 tx2->animated = true;
1632                                 // the primary/alternate are reversed here
1633                                 tx2->anim_total[0] = altmax;
1634                                 tx2->anim_total[1] = max;
1635                                 for (k = 0;k < 10;k++)
1636                                 {
1637                                         tx2->anim_frames[0][k] = altanims[k];
1638                                         tx2->anim_frames[1][k] = anims[k];
1639                                 }
1640                         }
1641                 }
1642         }
1643 }
1644
1645 static void Mod_Q1BSP_LoadLighting(lump_t *l)
1646 {
1647         int i;
1648         unsigned char *in, *out, *data, d;
1649         char litfilename[MAX_QPATH];
1650         char dlitfilename[MAX_QPATH];
1651         fs_offset_t filesize;
1652         if (loadmodel->brush.ishlbsp) // LordHavoc: load the colored lighting data straight
1653         {
1654                 loadmodel->brushq1.lightdata = (unsigned char *)Mem_Alloc(loadmodel->mempool, l->filelen);
1655                 for (i=0; i<l->filelen; i++)
1656                         loadmodel->brushq1.lightdata[i] = mod_base[l->fileofs+i] >>= 1;
1657         }
1658         else if (loadmodel->brush.ismcbsp)
1659         {
1660                 loadmodel->brushq1.lightdata = (unsigned char *)Mem_Alloc(loadmodel->mempool, l->filelen);
1661                 memcpy(loadmodel->brushq1.lightdata, mod_base + l->fileofs, l->filelen);
1662         }
1663         else // LordHavoc: bsp version 29 (normal white lighting)
1664         {
1665                 // LordHavoc: hope is not lost yet, check for a .lit file to load
1666                 strlcpy (litfilename, loadmodel->name, sizeof (litfilename));
1667                 FS_StripExtension (litfilename, litfilename, sizeof (litfilename));
1668                 strlcpy (dlitfilename, litfilename, sizeof (dlitfilename));
1669                 strlcat (litfilename, ".lit", sizeof (litfilename));
1670                 strlcat (dlitfilename, ".dlit", sizeof (dlitfilename));
1671                 data = (unsigned char*) FS_LoadFile(litfilename, tempmempool, false, &filesize);
1672                 if (data)
1673                 {
1674                         if (filesize == (fs_offset_t)(8 + l->filelen * 3) && data[0] == 'Q' && data[1] == 'L' && data[2] == 'I' && data[3] == 'T')
1675                         {
1676                                 i = LittleLong(((int *)data)[1]);
1677                                 if (i == 1)
1678                                 {
1679                                         Con_DPrintf("loaded %s\n", litfilename);
1680                                         loadmodel->brushq1.lightdata = (unsigned char *)Mem_Alloc(loadmodel->mempool, filesize - 8);
1681                                         memcpy(loadmodel->brushq1.lightdata, data + 8, filesize - 8);
1682                                         Mem_Free(data);
1683                                         data = (unsigned char*) FS_LoadFile(dlitfilename, tempmempool, false, &filesize);
1684                                         if (data)
1685                                         {
1686                                                 if (filesize == (fs_offset_t)(8 + l->filelen * 3) && data[0] == 'Q' && data[1] == 'L' && data[2] == 'I' && data[3] == 'T')
1687                                                 {
1688                                                         i = LittleLong(((int *)data)[1]);
1689                                                         if (i == 1)
1690                                                         {
1691                                                                 Con_DPrintf("loaded %s\n", dlitfilename);
1692                                                                 loadmodel->brushq1.nmaplightdata = (unsigned char *)Mem_Alloc(loadmodel->mempool, filesize - 8);
1693                                                                 memcpy(loadmodel->brushq1.nmaplightdata, data + 8, filesize - 8);
1694                                                                 loadmodel->brushq3.deluxemapping_modelspace = false;
1695                                                                 loadmodel->brushq3.deluxemapping = true;
1696                                                         }
1697                                                 }
1698                                                 Mem_Free(data);
1699                                                 data = NULL;
1700                                         }
1701                                         return;
1702                                 }
1703                                 else
1704                                         Con_Printf("Unknown .lit file version (%d)\n", i);
1705                         }
1706                         else if (filesize == 8)
1707                                 Con_Print("Empty .lit file, ignoring\n");
1708                         else
1709                                 Con_Printf("Corrupt .lit file (file size %i bytes, should be %i bytes), ignoring\n", (int) filesize, (int) (8 + l->filelen * 3));
1710                         if (data)
1711                         {
1712                                 Mem_Free(data);
1713                                 data = NULL;
1714                         }
1715                 }
1716                 // LordHavoc: oh well, expand the white lighting data
1717                 if (!l->filelen)
1718                         return;
1719                 loadmodel->brushq1.lightdata = (unsigned char *)Mem_Alloc(loadmodel->mempool, l->filelen*3);
1720                 in = mod_base + l->fileofs;
1721                 out = loadmodel->brushq1.lightdata;
1722                 for (i = 0;i < l->filelen;i++)
1723                 {
1724                         d = *in++;
1725                         *out++ = d;
1726                         *out++ = d;
1727                         *out++ = d;
1728                 }
1729         }
1730 }
1731
1732 static void Mod_Q1BSP_LoadVisibility(lump_t *l)
1733 {
1734         loadmodel->brushq1.num_compressedpvs = 0;
1735         loadmodel->brushq1.data_compressedpvs = NULL;
1736         if (!l->filelen)
1737                 return;
1738         loadmodel->brushq1.num_compressedpvs = l->filelen;
1739         loadmodel->brushq1.data_compressedpvs = (unsigned char *)Mem_Alloc(loadmodel->mempool, l->filelen);
1740         memcpy(loadmodel->brushq1.data_compressedpvs, mod_base + l->fileofs, l->filelen);
1741 }
1742
1743 // used only for HalfLife maps
1744 static void Mod_Q1BSP_ParseWadsFromEntityLump(const char *data)
1745 {
1746         char key[128], value[4096];
1747         char wadname[128];
1748         int i, j, k;
1749         if (!data)
1750                 return;
1751         if (!COM_ParseToken_Simple(&data, false))
1752                 return; // error
1753         if (com_token[0] != '{')
1754                 return; // error
1755         while (1)
1756         {
1757                 if (!COM_ParseToken_Simple(&data, false))
1758                         return; // error
1759                 if (com_token[0] == '}')
1760                         break; // end of worldspawn
1761                 if (com_token[0] == '_')
1762                         strlcpy(key, com_token + 1, sizeof(key));
1763                 else
1764                         strlcpy(key, com_token, sizeof(key));
1765                 while (key[strlen(key)-1] == ' ') // remove trailing spaces
1766                         key[strlen(key)-1] = 0;
1767                 if (!COM_ParseToken_Simple(&data, false))
1768                         return; // error
1769                 dpsnprintf(value, sizeof(value), "%s", com_token);
1770                 if (!strcmp("wad", key)) // for HalfLife maps
1771                 {
1772                         if (loadmodel->brush.ishlbsp)
1773                         {
1774                                 j = 0;
1775                                 for (i = 0;i < (int)sizeof(value);i++)
1776                                         if (value[i] != ';' && value[i] != '\\' && value[i] != '/' && value[i] != ':')
1777                                                 break;
1778                                 if (value[i])
1779                                 {
1780                                         for (;i < (int)sizeof(value);i++)
1781                                         {
1782                                                 // ignore path - the \\ check is for HalfLife... stupid windoze 'programmers'...
1783                                                 if (value[i] == '\\' || value[i] == '/' || value[i] == ':')
1784                                                         j = i+1;
1785                                                 else if (value[i] == ';' || value[i] == 0)
1786                                                 {
1787                                                         k = value[i];
1788                                                         value[i] = 0;
1789                                                         strlcpy(wadname, "textures/", sizeof(wadname));
1790                                                         strlcat(wadname, &value[j], sizeof(wadname));
1791                                                         W_LoadTextureWadFile(wadname, false);
1792                                                         j = i+1;
1793                                                         if (!k)
1794                                                                 break;
1795                                                 }
1796                                         }
1797                                 }
1798                         }
1799                 }
1800         }
1801 }
1802
1803 static void Mod_Q1BSP_LoadEntities(lump_t *l)
1804 {
1805         loadmodel->brush.entities = NULL;
1806         if (!l->filelen)
1807                 return;
1808         loadmodel->brush.entities = (char *)Mem_Alloc(loadmodel->mempool, l->filelen);
1809         memcpy(loadmodel->brush.entities, mod_base + l->fileofs, l->filelen);
1810         if (loadmodel->brush.ishlbsp)
1811                 Mod_Q1BSP_ParseWadsFromEntityLump(loadmodel->brush.entities);
1812 }
1813
1814
1815 static void Mod_Q1BSP_LoadVertexes(lump_t *l)
1816 {
1817         dvertex_t       *in;
1818         mvertex_t       *out;
1819         int                     i, count;
1820
1821         in = (dvertex_t *)(mod_base + l->fileofs);
1822         if (l->filelen % sizeof(*in))
1823                 Host_Error("Mod_Q1BSP_LoadVertexes: funny lump size in %s",loadmodel->name);
1824         count = l->filelen / sizeof(*in);
1825         out = (mvertex_t *)Mem_Alloc(loadmodel->mempool, count*sizeof(*out));
1826
1827         loadmodel->brushq1.vertexes = out;
1828         loadmodel->brushq1.numvertexes = count;
1829
1830         for ( i=0 ; i<count ; i++, in++, out++)
1831         {
1832                 out->position[0] = LittleFloat(in->point[0]);
1833                 out->position[1] = LittleFloat(in->point[1]);
1834                 out->position[2] = LittleFloat(in->point[2]);
1835         }
1836 }
1837
1838 // The following two functions should be removed and MSG_* or SZ_* function sets adjusted so they
1839 // can be used for this
1840 // REMOVEME
1841 int SB_ReadInt (unsigned char **buffer)
1842 {
1843         int     i;
1844         i = ((*buffer)[0]) + 256*((*buffer)[1]) + 65536*((*buffer)[2]) + 16777216*((*buffer)[3]);
1845         (*buffer) += 4;
1846         return i;
1847 }
1848
1849 // REMOVEME
1850 float SB_ReadFloat (unsigned char **buffer)
1851 {
1852         union
1853         {
1854                 int             i;
1855                 float   f;
1856         } u;
1857
1858         u.i = SB_ReadInt (buffer);
1859         return u.f;
1860 }
1861
1862 static void Mod_Q1BSP_LoadSubmodels(lump_t *l, hullinfo_t *hullinfo)
1863 {
1864         unsigned char           *index;
1865         dmodel_t        *out;
1866         int                     i, j, count;
1867
1868         index = (unsigned char *)(mod_base + l->fileofs);
1869         if (l->filelen % (48+4*hullinfo->filehulls))
1870                 Host_Error ("Mod_Q1BSP_LoadSubmodels: funny lump size in %s", loadmodel->name);
1871
1872         count = l->filelen / (48+4*hullinfo->filehulls);
1873         out = (dmodel_t *)Mem_Alloc (loadmodel->mempool, count*sizeof(*out));
1874
1875         loadmodel->brushq1.submodels = out;
1876         loadmodel->brush.numsubmodels = count;
1877
1878         for (i = 0; i < count; i++, out++)
1879         {
1880         // spread out the mins / maxs by a pixel
1881                 out->mins[0] = SB_ReadFloat (&index) - 1;
1882                 out->mins[1] = SB_ReadFloat (&index) - 1;
1883                 out->mins[2] = SB_ReadFloat (&index) - 1;
1884                 out->maxs[0] = SB_ReadFloat (&index) + 1;
1885                 out->maxs[1] = SB_ReadFloat (&index) + 1;
1886                 out->maxs[2] = SB_ReadFloat (&index) + 1;
1887                 out->origin[0] = SB_ReadFloat (&index);
1888                 out->origin[1] = SB_ReadFloat (&index);
1889                 out->origin[2] = SB_ReadFloat (&index);
1890                 for (j = 0; j < hullinfo->filehulls; j++)
1891                         out->headnode[j] = SB_ReadInt (&index);
1892                 out->visleafs = SB_ReadInt (&index);
1893                 out->firstface = SB_ReadInt (&index);
1894                 out->numfaces = SB_ReadInt (&index);
1895         }
1896 }
1897
1898 static void Mod_Q1BSP_LoadEdges(lump_t *l)
1899 {
1900         dedge_t *in;
1901         medge_t *out;
1902         int     i, count;
1903
1904         in = (dedge_t *)(mod_base + l->fileofs);
1905         if (l->filelen % sizeof(*in))
1906                 Host_Error("Mod_Q1BSP_LoadEdges: funny lump size in %s",loadmodel->name);
1907         count = l->filelen / sizeof(*in);
1908         out = (medge_t *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
1909
1910         loadmodel->brushq1.edges = out;
1911         loadmodel->brushq1.numedges = count;
1912
1913         for ( i=0 ; i<count ; i++, in++, out++)
1914         {
1915                 out->v[0] = (unsigned short)LittleShort(in->v[0]);
1916                 out->v[1] = (unsigned short)LittleShort(in->v[1]);
1917                 if (out->v[0] >= loadmodel->brushq1.numvertexes || out->v[1] >= loadmodel->brushq1.numvertexes)
1918                 {
1919                         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);
1920                         out->v[0] = 0;
1921                         out->v[1] = 0;
1922                 }
1923         }
1924 }
1925
1926 static void Mod_Q1BSP_LoadTexinfo(lump_t *l)
1927 {
1928         texinfo_t *in;
1929         mtexinfo_t *out;
1930         int i, j, k, count, miptex;
1931
1932         in = (texinfo_t *)(mod_base + l->fileofs);
1933         if (l->filelen % sizeof(*in))
1934                 Host_Error("Mod_Q1BSP_LoadTexinfo: funny lump size in %s",loadmodel->name);
1935         count = l->filelen / sizeof(*in);
1936         out = (mtexinfo_t *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
1937
1938         loadmodel->brushq1.texinfo = out;
1939         loadmodel->brushq1.numtexinfo = count;
1940
1941         for (i = 0;i < count;i++, in++, out++)
1942         {
1943                 for (k = 0;k < 2;k++)
1944                         for (j = 0;j < 4;j++)
1945                                 out->vecs[k][j] = LittleFloat(in->vecs[k][j]);
1946
1947                 miptex = LittleLong(in->miptex);
1948                 out->flags = LittleLong(in->flags);
1949
1950                 out->texture = NULL;
1951                 if (loadmodel->data_textures)
1952                 {
1953                         if ((unsigned int) miptex >= (unsigned int) loadmodel->num_textures)
1954                                 Con_Printf("error in model \"%s\": invalid miptex index %i(of %i)\n", loadmodel->name, miptex, loadmodel->num_textures);
1955                         else
1956                                 out->texture = loadmodel->data_textures + miptex;
1957                 }
1958                 if (out->flags & TEX_SPECIAL)
1959                 {
1960                         // if texture chosen is NULL or the shader needs a lightmap,
1961                         // force to notexture water shader
1962                         if (out->texture == NULL || out->texture->basematerialflags & MATERIALFLAG_WALL)
1963                                 out->texture = loadmodel->data_textures + (loadmodel->num_textures - 1);
1964                 }
1965                 else
1966                 {
1967                         // if texture chosen is NULL, force to notexture
1968                         if (out->texture == NULL)
1969                                 out->texture = loadmodel->data_textures + (loadmodel->num_textures - 2);
1970                 }
1971         }
1972 }
1973
1974 #if 0
1975 void BoundPoly(int numverts, float *verts, vec3_t mins, vec3_t maxs)
1976 {
1977         int             i, j;
1978         float   *v;
1979
1980         mins[0] = mins[1] = mins[2] = 9999;
1981         maxs[0] = maxs[1] = maxs[2] = -9999;
1982         v = verts;
1983         for (i = 0;i < numverts;i++)
1984         {
1985                 for (j = 0;j < 3;j++, v++)
1986                 {
1987                         if (*v < mins[j])
1988                                 mins[j] = *v;
1989                         if (*v > maxs[j])
1990                                 maxs[j] = *v;
1991                 }
1992         }
1993 }
1994
1995 #define MAX_SUBDIVPOLYTRIANGLES 4096
1996 #define MAX_SUBDIVPOLYVERTS(MAX_SUBDIVPOLYTRIANGLES * 3)
1997
1998 static int subdivpolyverts, subdivpolytriangles;
1999 static int subdivpolyindex[MAX_SUBDIVPOLYTRIANGLES][3];
2000 static float subdivpolyvert[MAX_SUBDIVPOLYVERTS][3];
2001
2002 static int subdivpolylookupvert(vec3_t v)
2003 {
2004         int i;
2005         for (i = 0;i < subdivpolyverts;i++)
2006                 if (subdivpolyvert[i][0] == v[0]
2007                  && subdivpolyvert[i][1] == v[1]
2008                  && subdivpolyvert[i][2] == v[2])
2009                         return i;
2010         if (subdivpolyverts >= MAX_SUBDIVPOLYVERTS)
2011                 Host_Error("SubDividePolygon: ran out of vertices in buffer, please increase your r_subdivide_size");
2012         VectorCopy(v, subdivpolyvert[subdivpolyverts]);
2013         return subdivpolyverts++;
2014 }
2015
2016 static void SubdividePolygon(int numverts, float *verts)
2017 {
2018         int             i, i1, i2, i3, f, b, c, p;
2019         vec3_t  mins, maxs, front[256], back[256];
2020         float   m, *pv, *cv, dist[256], frac;
2021
2022         if (numverts > 250)
2023                 Host_Error("SubdividePolygon: ran out of verts in buffer");
2024
2025         BoundPoly(numverts, verts, mins, maxs);
2026
2027         for (i = 0;i < 3;i++)
2028         {
2029                 m = (mins[i] + maxs[i]) * 0.5;
2030                 m = r_subdivide_size.value * floor(m/r_subdivide_size.value + 0.5);
2031                 if (maxs[i] - m < 8)
2032                         continue;
2033                 if (m - mins[i] < 8)
2034                         continue;
2035
2036                 // cut it
2037                 for (cv = verts, c = 0;c < numverts;c++, cv += 3)
2038                         dist[c] = cv[i] - m;
2039
2040                 f = b = 0;
2041                 for (p = numverts - 1, c = 0, pv = verts + p * 3, cv = verts;c < numverts;p = c, c++, pv = cv, cv += 3)
2042                 {
2043                         if (dist[p] >= 0)
2044                         {
2045                                 VectorCopy(pv, front[f]);
2046                                 f++;
2047                         }
2048                         if (dist[p] <= 0)
2049                         {
2050                                 VectorCopy(pv, back[b]);
2051                                 b++;
2052                         }
2053                         if (dist[p] == 0 || dist[c] == 0)
2054                                 continue;
2055                         if ((dist[p] > 0) != (dist[c] > 0) )
2056                         {
2057                                 // clip point
2058                                 frac = dist[p] / (dist[p] - dist[c]);
2059                                 front[f][0] = back[b][0] = pv[0] + frac * (cv[0] - pv[0]);
2060                                 front[f][1] = back[b][1] = pv[1] + frac * (cv[1] - pv[1]);
2061                                 front[f][2] = back[b][2] = pv[2] + frac * (cv[2] - pv[2]);
2062                                 f++;
2063                                 b++;
2064                         }
2065                 }
2066
2067                 SubdividePolygon(f, front[0]);
2068                 SubdividePolygon(b, back[0]);
2069                 return;
2070         }
2071
2072         i1 = subdivpolylookupvert(verts);
2073         i2 = subdivpolylookupvert(verts + 3);
2074         for (i = 2;i < numverts;i++)
2075         {
2076                 if (subdivpolytriangles >= MAX_SUBDIVPOLYTRIANGLES)
2077                 {
2078                         Con_Print("SubdividePolygon: ran out of triangles in buffer, please increase your r_subdivide_size\n");
2079                         return;
2080                 }
2081
2082                 i3 = subdivpolylookupvert(verts + i * 3);
2083                 subdivpolyindex[subdivpolytriangles][0] = i1;
2084                 subdivpolyindex[subdivpolytriangles][1] = i2;
2085                 subdivpolyindex[subdivpolytriangles][2] = i3;
2086                 i2 = i3;
2087                 subdivpolytriangles++;
2088         }
2089 }
2090
2091 //Breaks a polygon up along axial 64 unit
2092 //boundaries so that turbulent and sky warps
2093 //can be done reasonably.
2094 static void Mod_Q1BSP_GenerateWarpMesh(msurface_t *surface)
2095 {
2096         int i, j;
2097         surfvertex_t *v;
2098         surfmesh_t *mesh;
2099
2100         subdivpolytriangles = 0;
2101         subdivpolyverts = 0;
2102         SubdividePolygon(surface->num_vertices, (surface->mesh->data_vertex3f + 3 * surface->num_firstvertex));
2103         if (subdivpolytriangles < 1)
2104                 Host_Error("Mod_Q1BSP_GenerateWarpMesh: no triangles?");
2105
2106         surface->mesh = mesh = Mem_Alloc(loadmodel->mempool, sizeof(surfmesh_t) + subdivpolytriangles * sizeof(int[3]) + subdivpolyverts * sizeof(surfvertex_t));
2107         mesh->num_vertices = subdivpolyverts;
2108         mesh->num_triangles = subdivpolytriangles;
2109         mesh->vertex = (surfvertex_t *)(mesh + 1);
2110         mesh->index = (int *)(mesh->vertex + mesh->num_vertices);
2111         memset(mesh->vertex, 0, mesh->num_vertices * sizeof(surfvertex_t));
2112
2113         for (i = 0;i < mesh->num_triangles;i++)
2114                 for (j = 0;j < 3;j++)
2115                         mesh->index[i*3+j] = subdivpolyindex[i][j];
2116
2117         for (i = 0, v = mesh->vertex;i < subdivpolyverts;i++, v++)
2118         {
2119                 VectorCopy(subdivpolyvert[i], v->v);
2120                 v->st[0] = DotProduct(v->v, surface->lightmapinfo->texinfo->vecs[0]);
2121                 v->st[1] = DotProduct(v->v, surface->lightmapinfo->texinfo->vecs[1]);
2122         }
2123 }
2124 #endif
2125
2126 static qboolean Mod_Q1BSP_AllocLightmapBlock(int *lineused, int totalwidth, int totalheight, int blockwidth, int blockheight, int *outx, int *outy)
2127 {
2128         int y, x2, y2;
2129         int bestx = totalwidth, besty = 0;
2130         // find the left-most space we can find
2131         for (y = 0;y <= totalheight - blockheight;y++)
2132         {
2133                 x2 = 0;
2134                 for (y2 = 0;y2 < blockheight;y2++)
2135                         x2 = max(x2, lineused[y+y2]);
2136                 if (bestx > x2)
2137                 {
2138                         bestx = x2;
2139                         besty = y;
2140                 }
2141         }
2142         // if the best was not good enough, return failure
2143         if (bestx > totalwidth - blockwidth)
2144                 return false;
2145         // we found a good spot
2146         if (outx)
2147                 *outx = bestx;
2148         if (outy)
2149                 *outy = besty;
2150         // now mark the space used
2151         for (y2 = 0;y2 < blockheight;y2++)
2152                 lineused[besty+y2] = bestx + blockwidth;
2153         // return success
2154         return true;
2155 }
2156
2157 static void Mod_Q1BSP_LoadFaces(lump_t *l)
2158 {
2159         dface_t *in;
2160         msurface_t *surface;
2161         int i, j, count, surfacenum, planenum, smax, tmax, ssize, tsize, firstedge, numedges, totalverts, totaltris, lightmapnumber;
2162         float texmins[2], texmaxs[2], val, lightmaptexcoordscale;
2163 #define LIGHTMAPSIZE 256
2164         rtexture_t *lightmaptexture, *deluxemaptexture;
2165         int lightmap_lineused[LIGHTMAPSIZE];
2166
2167         in = (dface_t *)(mod_base + l->fileofs);
2168         if (l->filelen % sizeof(*in))
2169                 Host_Error("Mod_Q1BSP_LoadFaces: funny lump size in %s",loadmodel->name);
2170         count = l->filelen / sizeof(*in);
2171         loadmodel->data_surfaces = (msurface_t *)Mem_Alloc(loadmodel->mempool, count*sizeof(msurface_t));
2172         loadmodel->data_surfaces_lightmapinfo = (msurface_lightmapinfo_t *)Mem_Alloc(loadmodel->mempool, count*sizeof(msurface_lightmapinfo_t));
2173
2174         loadmodel->num_surfaces = count;
2175
2176         totalverts = 0;
2177         totaltris = 0;
2178         for (surfacenum = 0, in = (dface_t *)(mod_base + l->fileofs);surfacenum < count;surfacenum++, in++)
2179         {
2180                 numedges = LittleShort(in->numedges);
2181                 totalverts += numedges;
2182                 totaltris += numedges - 2;
2183         }
2184
2185         Mod_AllocSurfMesh(loadmodel->mempool, totalverts, totaltris, true, false, false);
2186
2187         lightmaptexture = NULL;
2188         deluxemaptexture = r_texture_blanknormalmap;
2189         lightmapnumber = 1;
2190         lightmaptexcoordscale = 1.0f / (float)LIGHTMAPSIZE;
2191
2192         totalverts = 0;
2193         totaltris = 0;
2194         for (surfacenum = 0, in = (dface_t *)(mod_base + l->fileofs), surface = loadmodel->data_surfaces;surfacenum < count;surfacenum++, in++, surface++)
2195         {
2196                 surface->lightmapinfo = loadmodel->data_surfaces_lightmapinfo + surfacenum;
2197
2198                 // FIXME: validate edges, texinfo, etc?
2199                 firstedge = LittleLong(in->firstedge);
2200                 numedges = LittleShort(in->numedges);
2201                 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)
2202                         Host_Error("Mod_Q1BSP_LoadFaces: invalid edge range (firstedge %i, numedges %i, model edges %i)", firstedge, numedges, loadmodel->brushq1.numsurfedges);
2203                 i = LittleShort(in->texinfo);
2204                 if ((unsigned int) i >= (unsigned int) loadmodel->brushq1.numtexinfo)
2205                         Host_Error("Mod_Q1BSP_LoadFaces: invalid texinfo index %i(model has %i texinfos)", i, loadmodel->brushq1.numtexinfo);
2206                 surface->lightmapinfo->texinfo = loadmodel->brushq1.texinfo + i;
2207                 surface->texture = surface->lightmapinfo->texinfo->texture;
2208
2209                 planenum = LittleShort(in->planenum);
2210                 if ((unsigned int) planenum >= (unsigned int) loadmodel->brush.num_planes)
2211                         Host_Error("Mod_Q1BSP_LoadFaces: invalid plane index %i (model has %i planes)", planenum, loadmodel->brush.num_planes);
2212
2213                 //surface->flags = surface->texture->flags;
2214                 //if (LittleShort(in->side))
2215                 //      surface->flags |= SURF_PLANEBACK;
2216                 //surface->plane = loadmodel->brush.data_planes + planenum;
2217
2218                 surface->num_firstvertex = totalverts;
2219                 surface->num_vertices = numedges;
2220                 surface->num_firsttriangle = totaltris;
2221                 surface->num_triangles = numedges - 2;
2222                 totalverts += numedges;
2223                 totaltris += numedges - 2;
2224
2225                 // convert edges back to a normal polygon
2226                 for (i = 0;i < surface->num_vertices;i++)
2227                 {
2228                         int lindex = loadmodel->brushq1.surfedges[firstedge + i];
2229                         float s, t;
2230                         if (lindex > 0)
2231                                 VectorCopy(loadmodel->brushq1.vertexes[loadmodel->brushq1.edges[lindex].v[0]].position, (loadmodel->surfmesh.data_vertex3f + 3 * surface->num_firstvertex) + i * 3);
2232                         else
2233                                 VectorCopy(loadmodel->brushq1.vertexes[loadmodel->brushq1.edges[-lindex].v[1]].position, (loadmodel->surfmesh.data_vertex3f + 3 * surface->num_firstvertex) + i * 3);
2234                         s = DotProduct(((loadmodel->surfmesh.data_vertex3f + 3 * surface->num_firstvertex) + i * 3), surface->lightmapinfo->texinfo->vecs[0]) + surface->lightmapinfo->texinfo->vecs[0][3];
2235                         t = DotProduct(((loadmodel->surfmesh.data_vertex3f + 3 * surface->num_firstvertex) + i * 3), surface->lightmapinfo->texinfo->vecs[1]) + surface->lightmapinfo->texinfo->vecs[1][3];
2236                         (loadmodel->surfmesh.data_texcoordtexture2f + 2 * surface->num_firstvertex)[i * 2 + 0] = s / surface->texture->width;
2237                         (loadmodel->surfmesh.data_texcoordtexture2f + 2 * surface->num_firstvertex)[i * 2 + 1] = t / surface->texture->height;
2238                         (loadmodel->surfmesh.data_texcoordlightmap2f + 2 * surface->num_firstvertex)[i * 2 + 0] = 0;
2239                         (loadmodel->surfmesh.data_texcoordlightmap2f + 2 * surface->num_firstvertex)[i * 2 + 1] = 0;
2240                         (loadmodel->surfmesh.data_lightmapoffsets + surface->num_firstvertex)[i] = 0;
2241                 }
2242
2243                 for (i = 0;i < surface->num_triangles;i++)
2244                 {
2245                         (loadmodel->surfmesh.data_element3i + 3 * surface->num_firsttriangle)[i * 3 + 0] = 0 + surface->num_firstvertex;
2246                         (loadmodel->surfmesh.data_element3i + 3 * surface->num_firsttriangle)[i * 3 + 1] = i + 1 + surface->num_firstvertex;
2247                         (loadmodel->surfmesh.data_element3i + 3 * surface->num_firsttriangle)[i * 3 + 2] = i + 2 + surface->num_firstvertex;
2248                 }
2249
2250                 // compile additional data about the surface geometry
2251                 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);
2252                 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);
2253                 BoxFromPoints(surface->mins, surface->maxs, surface->num_vertices, (loadmodel->surfmesh.data_vertex3f + 3 * surface->num_firstvertex));
2254
2255                 // generate surface extents information
2256                 texmins[0] = texmaxs[0] = DotProduct((loadmodel->surfmesh.data_vertex3f + 3 * surface->num_firstvertex), surface->lightmapinfo->texinfo->vecs[0]) + surface->lightmapinfo->texinfo->vecs[0][3];
2257                 texmins[1] = texmaxs[1] = DotProduct((loadmodel->surfmesh.data_vertex3f + 3 * surface->num_firstvertex), surface->lightmapinfo->texinfo->vecs[1]) + surface->lightmapinfo->texinfo->vecs[1][3];
2258                 for (i = 1;i < surface->num_vertices;i++)
2259                 {
2260                         for (j = 0;j < 2;j++)
2261                         {
2262                                 val = DotProduct((loadmodel->surfmesh.data_vertex3f + 3 * surface->num_firstvertex) + i * 3, surface->lightmapinfo->texinfo->vecs[j]) + surface->lightmapinfo->texinfo->vecs[j][3];
2263                                 texmins[j] = min(texmins[j], val);
2264                                 texmaxs[j] = max(texmaxs[j], val);
2265                         }
2266                 }
2267                 for (i = 0;i < 2;i++)
2268                 {
2269                         surface->lightmapinfo->texturemins[i] = (int) floor(texmins[i] / 16.0) * 16;
2270                         surface->lightmapinfo->extents[i] = (int) ceil(texmaxs[i] / 16.0) * 16 - surface->lightmapinfo->texturemins[i];
2271                 }
2272
2273                 smax = surface->lightmapinfo->extents[0] >> 4;
2274                 tmax = surface->lightmapinfo->extents[1] >> 4;
2275                 ssize = (surface->lightmapinfo->extents[0] >> 4) + 1;
2276                 tsize = (surface->lightmapinfo->extents[1] >> 4) + 1;
2277
2278                 // lighting info
2279                 for (i = 0;i < MAXLIGHTMAPS;i++)
2280                         surface->lightmapinfo->styles[i] = in->styles[i];
2281                 surface->lightmaptexture = NULL;
2282                 surface->deluxemaptexture = r_texture_blanknormalmap;
2283                 i = LittleLong(in->lightofs);
2284                 if (i == -1)
2285                 {
2286                         surface->lightmapinfo->samples = NULL;
2287                         // give non-lightmapped water a 1x white lightmap
2288                         if ((surface->texture->basematerialflags & MATERIALFLAG_WATER) && (surface->lightmapinfo->texinfo->flags & TEX_SPECIAL) && ssize <= 256 && tsize <= 256)
2289                         {
2290                                 surface->lightmapinfo->samples = (unsigned char *)Mem_Alloc(loadmodel->mempool, ssize * tsize * 3);
2291                                 surface->lightmapinfo->styles[0] = 0;
2292                                 memset(surface->lightmapinfo->samples, 128, ssize * tsize * 3);
2293                         }
2294                 }
2295                 else if (loadmodel->brush.ishlbsp) // LordHavoc: HalfLife map (bsp version 30)
2296                         surface->lightmapinfo->samples = loadmodel->brushq1.lightdata + i;
2297                 else // LordHavoc: white lighting (bsp version 29)
2298                 {
2299                         surface->lightmapinfo->samples = loadmodel->brushq1.lightdata + (i * 3);
2300                         if (loadmodel->brushq1.nmaplightdata)
2301                                 surface->lightmapinfo->nmapsamples = loadmodel->brushq1.nmaplightdata + (i * 3);
2302                 }
2303
2304                 // check if we should apply a lightmap to this
2305                 if (!(surface->lightmapinfo->texinfo->flags & TEX_SPECIAL) || surface->lightmapinfo->samples)
2306                 {
2307                         int i, iu, iv, lightmapx, lightmapy;
2308                         float u, v, ubase, vbase, uscale, vscale;
2309
2310                         if (ssize > 256 || tsize > 256)
2311                                 Host_Error("Bad surface extents");
2312                         // force lightmap upload on first time seeing the surface
2313                         surface->cached_dlight = true;
2314                         // stainmap for permanent marks on walls
2315                         surface->lightmapinfo->stainsamples = (unsigned char *)Mem_Alloc(loadmodel->mempool, ssize * tsize * 3);
2316                         // clear to white
2317                         memset(surface->lightmapinfo->stainsamples, 255, ssize * tsize * 3);
2318
2319                         // find a place for this lightmap
2320                         if (!lightmaptexture || !Mod_Q1BSP_AllocLightmapBlock(lightmap_lineused, LIGHTMAPSIZE, LIGHTMAPSIZE, ssize, tsize, &lightmapx, &lightmapy))
2321                         {
2322                                 // allocate a texture pool if we need it
2323                                 if (loadmodel->texturepool == NULL && cls.state != ca_dedicated)
2324                                         loadmodel->texturepool = R_AllocTexturePool();
2325                                 // could not find room, make a new lightmap
2326                                 lightmaptexture = R_LoadTexture2D(loadmodel->texturepool, va("lightmap%i", lightmapnumber), LIGHTMAPSIZE, LIGHTMAPSIZE, NULL, loadmodel->brushq1.lightmaprgba ? TEXTYPE_RGBA : TEXTYPE_RGB, TEXF_FORCELINEAR | TEXF_PRECACHE, NULL);
2327                                 if (loadmodel->brushq1.nmaplightdata)
2328                                         deluxemaptexture = R_LoadTexture2D(loadmodel->texturepool, va("deluxemap%i", lightmapnumber), LIGHTMAPSIZE, LIGHTMAPSIZE, NULL, loadmodel->brushq1.lightmaprgba ? TEXTYPE_RGBA : TEXTYPE_RGB, TEXF_FORCELINEAR | TEXF_PRECACHE, NULL);
2329                                 lightmapnumber++;
2330                                 memset(lightmap_lineused, 0, sizeof(lightmap_lineused));
2331                                 Mod_Q1BSP_AllocLightmapBlock(lightmap_lineused, LIGHTMAPSIZE, LIGHTMAPSIZE, ssize, tsize, &lightmapx, &lightmapy);
2332                         }
2333
2334                         surface->lightmaptexture = lightmaptexture;
2335                         surface->deluxemaptexture = deluxemaptexture;
2336                         surface->lightmapinfo->lightmaporigin[0] = lightmapx;
2337                         surface->lightmapinfo->lightmaporigin[1] = lightmapy;
2338
2339                         ubase = lightmapx * lightmaptexcoordscale;
2340                         vbase = lightmapy * lightmaptexcoordscale;
2341                         uscale = lightmaptexcoordscale;
2342                         vscale = lightmaptexcoordscale;
2343
2344                         for (i = 0;i < surface->num_vertices;i++)
2345                         {
2346                                 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);
2347                                 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);
2348                                 (loadmodel->surfmesh.data_texcoordlightmap2f + 2 * surface->num_firstvertex)[i * 2 + 0] = u * uscale + ubase;
2349                                 (loadmodel->surfmesh.data_texcoordlightmap2f + 2 * surface->num_firstvertex)[i * 2 + 1] = v * vscale + vbase;
2350                                 // LordHavoc: calc lightmap data offset for vertex lighting to use
2351                                 iu = (int) u;
2352                                 iv = (int) v;
2353                                 (loadmodel->surfmesh.data_lightmapoffsets + surface->num_firstvertex)[i] = (bound(0, iv, tmax) * ssize + bound(0, iu, smax)) * 3;
2354                         }
2355                 }
2356         }
2357 }
2358
2359 static void Mod_Q1BSP_LoadNodes_RecursiveSetParent(mnode_t *node, mnode_t *parent)
2360 {
2361         //if (node->parent)
2362         //      Host_Error("Mod_Q1BSP_LoadNodes_RecursiveSetParent: runaway recursion");
2363         node->parent = parent;
2364         if (node->plane)
2365         {
2366                 // this is a node, recurse to children
2367                 Mod_Q1BSP_LoadNodes_RecursiveSetParent(node->children[0], node);
2368                 Mod_Q1BSP_LoadNodes_RecursiveSetParent(node->children[1], node);
2369                 // combine supercontents of children
2370                 node->combinedsupercontents = node->children[0]->combinedsupercontents | node->children[1]->combinedsupercontents;
2371         }
2372         else
2373         {
2374                 int j;
2375                 mleaf_t *leaf = (mleaf_t *)node;
2376                 // if this is a leaf, calculate supercontents mask from all collidable
2377                 // primitives in the leaf (brushes and collision surfaces)
2378                 // also flag if the leaf contains any collision surfaces
2379                 leaf->combinedsupercontents = 0;
2380                 // combine the supercontents values of all brushes in this leaf
2381                 for (j = 0;j < leaf->numleafbrushes;j++)
2382                         leaf->combinedsupercontents |= loadmodel->brush.data_brushes[leaf->firstleafbrush[j]].texture->supercontents;
2383                 // check if this leaf contains any collision surfaces (q3 patches)
2384                 for (j = 0;j < leaf->numleafsurfaces;j++)
2385                 {
2386                         msurface_t *surface = loadmodel->data_surfaces + leaf->firstleafsurface[j];
2387                         if (surface->num_collisiontriangles)
2388                         {
2389                                 leaf->containscollisionsurfaces = true;
2390                                 leaf->combinedsupercontents |= surface->texture->supercontents;
2391                         }
2392                 }
2393         }
2394 }
2395
2396 static void Mod_Q1BSP_LoadNodes(lump_t *l)
2397 {
2398         int                     i, j, count, p;
2399         dnode_t         *in;
2400         mnode_t         *out;
2401
2402         in = (dnode_t *)(mod_base + l->fileofs);
2403         if (l->filelen % sizeof(*in))
2404                 Host_Error("Mod_Q1BSP_LoadNodes: funny lump size in %s",loadmodel->name);
2405         count = l->filelen / sizeof(*in);
2406         out = (mnode_t *)Mem_Alloc(loadmodel->mempool, count*sizeof(*out));
2407
2408         loadmodel->brush.data_nodes = out;
2409         loadmodel->brush.num_nodes = count;
2410
2411         for ( i=0 ; i<count ; i++, in++, out++)
2412         {
2413                 for (j=0 ; j<3 ; j++)
2414                 {
2415                         out->mins[j] = LittleShort(in->mins[j]);
2416                         out->maxs[j] = LittleShort(in->maxs[j]);
2417                 }
2418
2419                 p = LittleLong(in->planenum);
2420                 out->plane = loadmodel->brush.data_planes + p;
2421
2422                 out->firstsurface = LittleShort(in->firstface);
2423                 out->numsurfaces = LittleShort(in->numfaces);
2424
2425                 for (j=0 ; j<2 ; j++)
2426                 {
2427                         p = LittleShort(in->children[j]);
2428                         if (p >= 0)
2429                                 out->children[j] = loadmodel->brush.data_nodes + p;
2430                         else
2431                                 out->children[j] = (mnode_t *)(loadmodel->brush.data_leafs + (-1 - p));
2432                 }
2433         }
2434
2435         Mod_Q1BSP_LoadNodes_RecursiveSetParent(loadmodel->brush.data_nodes, NULL);      // sets nodes and leafs
2436 }
2437
2438 static void Mod_Q1BSP_LoadLeafs(lump_t *l)
2439 {
2440         dleaf_t *in;
2441         mleaf_t *out;
2442         int i, j, count, p;
2443
2444         in = (dleaf_t *)(mod_base + l->fileofs);
2445         if (l->filelen % sizeof(*in))
2446                 Host_Error("Mod_Q1BSP_LoadLeafs: funny lump size in %s",loadmodel->name);
2447         count = l->filelen / sizeof(*in);
2448         out = (mleaf_t *)Mem_Alloc(loadmodel->mempool, count*sizeof(*out));
2449
2450         loadmodel->brush.data_leafs = out;
2451         loadmodel->brush.num_leafs = count;
2452         // get visleafs from the submodel data
2453         loadmodel->brush.num_pvsclusters = loadmodel->brushq1.submodels[0].visleafs;
2454         loadmodel->brush.num_pvsclusterbytes = (loadmodel->brush.num_pvsclusters+7)>>3;
2455         loadmodel->brush.data_pvsclusters = (unsigned char *)Mem_Alloc(loadmodel->mempool, loadmodel->brush.num_pvsclusters * loadmodel->brush.num_pvsclusterbytes);
2456         memset(loadmodel->brush.data_pvsclusters, 0xFF, loadmodel->brush.num_pvsclusters * loadmodel->brush.num_pvsclusterbytes);
2457
2458         for ( i=0 ; i<count ; i++, in++, out++)
2459         {
2460                 for (j=0 ; j<3 ; j++)
2461                 {
2462                         out->mins[j] = LittleShort(in->mins[j]);
2463                         out->maxs[j] = LittleShort(in->maxs[j]);
2464                 }
2465
2466                 // FIXME: this function could really benefit from some error checking
2467
2468                 out->contents = LittleLong(in->contents);
2469
2470                 out->firstleafsurface = loadmodel->brush.data_leafsurfaces + LittleShort(in->firstmarksurface);
2471                 out->numleafsurfaces = LittleShort(in->nummarksurfaces);
2472                 if (out->firstleafsurface < 0 || LittleShort(in->firstmarksurface) + out->numleafsurfaces > loadmodel->brush.num_leafsurfaces)
2473                 {
2474                         Con_Printf("Mod_Q1BSP_LoadLeafs: invalid leafsurface range %i:%i outside range %i:%i\n", (int)(out->firstleafsurface - loadmodel->brush.data_leafsurfaces), (int)(out->firstleafsurface + out->numleafsurfaces - loadmodel->brush.data_leafsurfaces), 0, loadmodel->brush.num_leafsurfaces);
2475                         out->firstleafsurface = NULL;
2476                         out->numleafsurfaces = 0;
2477                 }
2478
2479                 out->clusterindex = i - 1;
2480                 if (out->clusterindex >= loadmodel->brush.num_pvsclusters)
2481                         out->clusterindex = -1;
2482
2483                 p = LittleLong(in->visofs);
2484                 // ignore visofs errors on leaf 0 (solid)
2485                 if (p >= 0 && out->clusterindex >= 0)
2486                 {
2487                         if (p >= loadmodel->brushq1.num_compressedpvs)
2488                                 Con_Print("Mod_Q1BSP_LoadLeafs: invalid visofs\n");
2489                         else
2490                                 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);
2491                 }
2492
2493                 for (j = 0;j < 4;j++)
2494                         out->ambient_sound_level[j] = in->ambient_level[j];
2495
2496                 // FIXME: Insert caustics here
2497         }
2498 }
2499
2500 qboolean Mod_Q1BSP_CheckWaterAlphaSupport(void)
2501 {
2502         int i, j;
2503         mleaf_t *leaf;
2504         const unsigned char *pvs;
2505         // check all liquid leafs to see if they can see into empty leafs, if any
2506         // can we can assume this map supports r_wateralpha
2507         for (i = 0, leaf = loadmodel->brush.data_leafs;i < loadmodel->brush.num_leafs;i++, leaf++)
2508         {
2509                 if ((leaf->contents == CONTENTS_WATER || leaf->contents == CONTENTS_SLIME) && (leaf->clusterindex >= 0 && loadmodel->brush.data_pvsclusters))
2510                 {
2511                         pvs = loadmodel->brush.data_pvsclusters + leaf->clusterindex * loadmodel->brush.num_pvsclusterbytes;
2512                         for (j = 0;j < loadmodel->brush.num_leafs;j++)
2513                                 if (CHECKPVSBIT(pvs, loadmodel->brush.data_leafs[j].clusterindex) && loadmodel->brush.data_leafs[j].contents == CONTENTS_EMPTY)
2514                                         return true;
2515                 }
2516         }
2517         return false;
2518 }
2519
2520 static void Mod_Q1BSP_LoadClipnodes(lump_t *l, hullinfo_t *hullinfo)
2521 {
2522         dclipnode_t *in, *out;
2523         int                     i, count;
2524         hull_t          *hull;
2525
2526         in = (dclipnode_t *)(mod_base + l->fileofs);
2527         if (l->filelen % sizeof(*in))
2528                 Host_Error("Mod_Q1BSP_LoadClipnodes: funny lump size in %s",loadmodel->name);
2529         count = l->filelen / sizeof(*in);
2530         out = (dclipnode_t *)Mem_Alloc(loadmodel->mempool, count*sizeof(*out));
2531
2532         loadmodel->brushq1.clipnodes = out;
2533         loadmodel->brushq1.numclipnodes = count;
2534
2535         for (i = 1; i < hullinfo->numhulls; i++)
2536         {
2537                 hull = &loadmodel->brushq1.hulls[i];
2538                 hull->clipnodes = out;
2539                 hull->firstclipnode = 0;
2540                 hull->lastclipnode = count-1;
2541                 hull->planes = loadmodel->brush.data_planes;
2542                 hull->clip_mins[0] = hullinfo->hullsizes[i][0][0];
2543                 hull->clip_mins[1] = hullinfo->hullsizes[i][0][1];
2544                 hull->clip_mins[2] = hullinfo->hullsizes[i][0][2];
2545                 hull->clip_maxs[0] = hullinfo->hullsizes[i][1][0];
2546                 hull->clip_maxs[1] = hullinfo->hullsizes[i][1][1];
2547                 hull->clip_maxs[2] = hullinfo->hullsizes[i][1][2];
2548                 VectorSubtract(hull->clip_maxs, hull->clip_mins, hull->clip_size);
2549         }
2550
2551         for (i=0 ; i<count ; i++, out++, in++)
2552         {
2553                 out->planenum = LittleLong(in->planenum);
2554                 out->children[0] = LittleShort(in->children[0]);
2555                 out->children[1] = LittleShort(in->children[1]);
2556                 if (out->planenum < 0 || out->planenum >= loadmodel->brush.num_planes)
2557                         Host_Error("Corrupt clipping hull(out of range planenum)");
2558                 if (out->children[0] >= count || out->children[1] >= count)
2559                         Host_Error("Corrupt clipping hull(out of range child)");
2560         }
2561 }
2562
2563 //Duplicate the drawing hull structure as a clipping hull
2564 static void Mod_Q1BSP_MakeHull0(void)
2565 {
2566         mnode_t         *in;
2567         dclipnode_t *out;
2568         int                     i;
2569         hull_t          *hull;
2570
2571         hull = &loadmodel->brushq1.hulls[0];
2572
2573         in = loadmodel->brush.data_nodes;
2574         out = (dclipnode_t *)Mem_Alloc(loadmodel->mempool, loadmodel->brush.num_nodes * sizeof(dclipnode_t));
2575
2576         hull->clipnodes = out;
2577         hull->firstclipnode = 0;
2578         hull->lastclipnode = loadmodel->brush.num_nodes - 1;
2579         hull->planes = loadmodel->brush.data_planes;
2580
2581         for (i = 0;i < loadmodel->brush.num_nodes;i++, out++, in++)
2582         {
2583                 out->planenum = in->plane - loadmodel->brush.data_planes;
2584                 out->children[0] = in->children[0]->plane ? in->children[0] - loadmodel->brush.data_nodes : ((mleaf_t *)in->children[0])->contents;
2585                 out->children[1] = in->children[1]->plane ? in->children[1] - loadmodel->brush.data_nodes : ((mleaf_t *)in->children[1])->contents;
2586         }
2587 }
2588
2589 static void Mod_Q1BSP_LoadLeaffaces(lump_t *l)
2590 {
2591         int i, j;
2592         short *in;
2593
2594         in = (short *)(mod_base + l->fileofs);
2595         if (l->filelen % sizeof(*in))
2596                 Host_Error("Mod_Q1BSP_LoadLeaffaces: funny lump size in %s",loadmodel->name);
2597         loadmodel->brush.num_leafsurfaces = l->filelen / sizeof(*in);
2598         loadmodel->brush.data_leafsurfaces = (int *)Mem_Alloc(loadmodel->mempool, loadmodel->brush.num_leafsurfaces * sizeof(int));
2599
2600         for (i = 0;i < loadmodel->brush.num_leafsurfaces;i++)
2601         {
2602                 j = (unsigned) LittleShort(in[i]);
2603                 if (j >= loadmodel->num_surfaces)
2604                         Host_Error("Mod_Q1BSP_LoadLeaffaces: bad surface number");
2605                 loadmodel->brush.data_leafsurfaces[i] = j;
2606         }
2607 }
2608
2609 static void Mod_Q1BSP_LoadSurfedges(lump_t *l)
2610 {
2611         int             i;
2612         int             *in;
2613
2614         in = (int *)(mod_base + l->fileofs);
2615         if (l->filelen % sizeof(*in))
2616                 Host_Error("Mod_Q1BSP_LoadSurfedges: funny lump size in %s",loadmodel->name);
2617         loadmodel->brushq1.numsurfedges = l->filelen / sizeof(*in);
2618         loadmodel->brushq1.surfedges = (int *)Mem_Alloc(loadmodel->mempool, loadmodel->brushq1.numsurfedges * sizeof(int));
2619
2620         for (i = 0;i < loadmodel->brushq1.numsurfedges;i++)
2621                 loadmodel->brushq1.surfedges[i] = LittleLong(in[i]);
2622 }
2623
2624
2625 static void Mod_Q1BSP_LoadPlanes(lump_t *l)
2626 {
2627         int                     i;
2628         mplane_t        *out;
2629         dplane_t        *in;
2630
2631         in = (dplane_t *)(mod_base + l->fileofs);
2632         if (l->filelen % sizeof(*in))
2633                 Host_Error("Mod_Q1BSP_LoadPlanes: funny lump size in %s", loadmodel->name);
2634
2635         loadmodel->brush.num_planes = l->filelen / sizeof(*in);
2636         loadmodel->brush.data_planes = out = (mplane_t *)Mem_Alloc(loadmodel->mempool, loadmodel->brush.num_planes * sizeof(*out));
2637
2638         for (i = 0;i < loadmodel->brush.num_planes;i++, in++, out++)
2639         {
2640                 out->normal[0] = LittleFloat(in->normal[0]);
2641                 out->normal[1] = LittleFloat(in->normal[1]);
2642                 out->normal[2] = LittleFloat(in->normal[2]);
2643                 out->dist = LittleFloat(in->dist);
2644
2645                 PlaneClassify(out);
2646         }
2647 }
2648
2649 static void Mod_Q1BSP_LoadMapBrushes(void)
2650 {
2651 #if 0
2652 // unfinished
2653         int submodel, numbrushes;
2654         qboolean firstbrush;
2655         char *text, *maptext;
2656         char mapfilename[MAX_QPATH];
2657         FS_StripExtension (loadmodel->name, mapfilename, sizeof (mapfilename));
2658         strlcat (mapfilename, ".map", sizeof (mapfilename));
2659         maptext = (unsigned char*) FS_LoadFile(mapfilename, tempmempool, false, NULL);
2660         if (!maptext)
2661                 return;
2662         text = maptext;
2663         if (!COM_ParseToken_Simple(&data, false))
2664                 return; // error
2665         submodel = 0;
2666         for (;;)
2667         {
2668                 if (!COM_ParseToken_Simple(&data, false))
2669                         break;
2670                 if (com_token[0] != '{')
2671                         return; // error
2672                 // entity
2673                 firstbrush = true;
2674                 numbrushes = 0;
2675                 maxbrushes = 256;
2676                 brushes = Mem_Alloc(loadmodel->mempool, maxbrushes * sizeof(mbrush_t));
2677                 for (;;)
2678                 {
2679                         if (!COM_ParseToken_Simple(&data, false))
2680                                 return; // error
2681                         if (com_token[0] == '}')
2682                                 break; // end of entity
2683                         if (com_token[0] == '{')
2684                         {
2685                                 // brush
2686                                 if (firstbrush)
2687                                 {
2688                                         if (submodel)
2689                                         {
2690                                                 if (submodel > loadmodel->brush.numsubmodels)
2691                                                 {
2692                                                         Con_Printf("Mod_Q1BSP_LoadMapBrushes: .map has more submodels than .bsp!\n");
2693                                                         model = NULL;
2694                                                 }
2695                                                 else
2696                                                         model = loadmodel->brush.submodels[submodel];
2697                                         }
2698                                         else
2699                                                 model = loadmodel;
2700                                 }
2701                                 for (;;)
2702                                 {
2703                                         if (!COM_ParseToken_Simple(&data, false))
2704                                                 return; // error
2705                                         if (com_token[0] == '}')
2706                                                 break; // end of brush
2707                                         // each brush face should be this format:
2708                                         // ( x y z ) ( x y z ) ( x y z ) texture scroll_s scroll_t rotateangle scale_s scale_t
2709                                         // FIXME: support hl .map format
2710                                         for (pointnum = 0;pointnum < 3;pointnum++)
2711                                         {
2712                                                 COM_ParseToken_Simple(&data, false);
2713                                                 for (componentnum = 0;componentnum < 3;componentnum++)
2714                                                 {
2715                                                         COM_ParseToken_Simple(&data, false);
2716                                                         point[pointnum][componentnum] = atof(com_token);
2717                                                 }
2718                                                 COM_ParseToken_Simple(&data, false);
2719                                         }
2720                                         COM_ParseToken_Simple(&data, false);
2721                                         strlcpy(facetexture, com_token, sizeof(facetexture));
2722                                         COM_ParseToken_Simple(&data, false);
2723                                         //scroll_s = atof(com_token);
2724                                         COM_ParseToken_Simple(&data, false);
2725                                         //scroll_t = atof(com_token);
2726                                         COM_ParseToken_Simple(&data, false);
2727                                         //rotate = atof(com_token);
2728                                         COM_ParseToken_Simple(&data, false);
2729                                         //scale_s = atof(com_token);
2730                                         COM_ParseToken_Simple(&data, false);
2731                                         //scale_t = atof(com_token);
2732                                         TriangleNormal(point[0], point[1], point[2], planenormal);
2733                                         VectorNormalizeDouble(planenormal);
2734                                         planedist = DotProduct(point[0], planenormal);
2735                                         //ChooseTexturePlane(planenormal, texturevector[0], texturevector[1]);
2736                                 }
2737                                 continue;
2738                         }
2739                 }
2740         }
2741 #endif
2742 }
2743
2744
2745 #define MAX_PORTALPOINTS 64
2746
2747 typedef struct portal_s
2748 {
2749         mplane_t plane;
2750         mnode_t *nodes[2];              // [0] = front side of plane
2751         struct portal_s *next[2];
2752         int numpoints;
2753         double points[3*MAX_PORTALPOINTS];
2754         struct portal_s *chain; // all portals are linked into a list
2755 }
2756 portal_t;
2757
2758 static portal_t *portalchain;
2759
2760 /*
2761 ===========
2762 AllocPortal
2763 ===========
2764 */
2765 static portal_t *AllocPortal(void)
2766 {
2767         portal_t *p;
2768         p = (portal_t *)Mem_Alloc(loadmodel->mempool, sizeof(portal_t));
2769         p->chain = portalchain;
2770         portalchain = p;
2771         return p;
2772 }
2773
2774 static void FreePortal(portal_t *p)
2775 {
2776         Mem_Free(p);
2777 }
2778
2779 static void Mod_Q1BSP_RecursiveRecalcNodeBBox(mnode_t *node)
2780 {
2781         // process only nodes (leafs already had their box calculated)
2782         if (!node->plane)
2783                 return;
2784
2785         // calculate children first
2786         Mod_Q1BSP_RecursiveRecalcNodeBBox(node->children[0]);
2787         Mod_Q1BSP_RecursiveRecalcNodeBBox(node->children[1]);
2788
2789         // make combined bounding box from children
2790         node->mins[0] = min(node->children[0]->mins[0], node->children[1]->mins[0]);
2791         node->mins[1] = min(node->children[0]->mins[1], node->children[1]->mins[1]);
2792         node->mins[2] = min(node->children[0]->mins[2], node->children[1]->mins[2]);
2793         node->maxs[0] = max(node->children[0]->maxs[0], node->children[1]->maxs[0]);
2794         node->maxs[1] = max(node->children[0]->maxs[1], node->children[1]->maxs[1]);
2795         node->maxs[2] = max(node->children[0]->maxs[2], node->children[1]->maxs[2]);
2796 }
2797
2798 static void Mod_Q1BSP_FinalizePortals(void)
2799 {
2800         int i, j, numportals, numpoints;
2801         portal_t *p, *pnext;
2802         mportal_t *portal;
2803         mvertex_t *point;
2804         mleaf_t *leaf, *endleaf;
2805
2806         // tally up portal and point counts and recalculate bounding boxes for all
2807         // leafs (because qbsp is very sloppy)
2808         leaf = loadmodel->brush.data_leafs;
2809         endleaf = leaf + loadmodel->brush.num_leafs;
2810         for (;leaf < endleaf;leaf++)
2811         {
2812                 VectorSet(leaf->mins,  2000000000,  2000000000,  2000000000);
2813                 VectorSet(leaf->maxs, -2000000000, -2000000000, -2000000000);
2814         }
2815         p = portalchain;
2816         numportals = 0;
2817         numpoints = 0;
2818         while (p)
2819         {
2820                 // note: this check must match the one below or it will usually corrupt memory
2821                 // 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
2822                 if (p->numpoints >= 3 && p->nodes[0] != p->nodes[1] && ((mleaf_t *)p->nodes[0])->clusterindex >= 0 && ((mleaf_t *)p->nodes[1])->clusterindex >= 0)
2823                 {
2824                         numportals += 2;
2825                         numpoints += p->numpoints * 2;
2826                 }
2827                 p = p->chain;
2828         }
2829         loadmodel->brush.data_portals = (mportal_t *)Mem_Alloc(loadmodel->mempool, numportals * sizeof(mportal_t) + numpoints * sizeof(mvertex_t));
2830         loadmodel->brush.num_portals = numportals;
2831         loadmodel->brush.data_portalpoints = (mvertex_t *)((unsigned char *) loadmodel->brush.data_portals + numportals * sizeof(mportal_t));
2832         loadmodel->brush.num_portalpoints = numpoints;
2833         // clear all leaf portal chains
2834         for (i = 0;i < loadmodel->brush.num_leafs;i++)
2835                 loadmodel->brush.data_leafs[i].portals = NULL;
2836         // process all portals in the global portal chain, while freeing them
2837         portal = loadmodel->brush.data_portals;
2838         point = loadmodel->brush.data_portalpoints;
2839         p = portalchain;
2840         portalchain = NULL;
2841         while (p)
2842         {
2843                 pnext = p->chain;
2844
2845                 if (p->numpoints >= 3 && p->nodes[0] != p->nodes[1])
2846                 {
2847                         // note: this check must match the one above or it will usually corrupt memory
2848                         // 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
2849                         if (((mleaf_t *)p->nodes[0])->clusterindex >= 0 && ((mleaf_t *)p->nodes[1])->clusterindex >= 0)
2850                         {
2851                                 // first make the back to front portal(forward portal)
2852                                 portal->points = point;
2853                                 portal->numpoints = p->numpoints;
2854                                 portal->plane.dist = p->plane.dist;
2855                                 VectorCopy(p->plane.normal, portal->plane.normal);
2856                                 portal->here = (mleaf_t *)p->nodes[1];
2857                                 portal->past = (mleaf_t *)p->nodes[0];
2858                                 // copy points
2859                                 for (j = 0;j < portal->numpoints;j++)
2860                                 {
2861                                         VectorCopy(p->points + j*3, point->position);
2862                                         point++;
2863                                 }
2864                                 BoxFromPoints(portal->mins, portal->maxs, portal->numpoints, portal->points->position);
2865                                 PlaneClassify(&portal->plane);
2866
2867                                 // link into leaf's portal chain
2868                                 portal->next = portal->here->portals;
2869                                 portal->here->portals = portal;
2870
2871                                 // advance to next portal
2872                                 portal++;
2873
2874                                 // then make the front to back portal(backward portal)
2875                                 portal->points = point;
2876                                 portal->numpoints = p->numpoints;
2877                                 portal->plane.dist = -p->plane.dist;
2878                                 VectorNegate(p->plane.normal, portal->plane.normal);
2879                                 portal->here = (mleaf_t *)p->nodes[0];
2880                                 portal->past = (mleaf_t *)p->nodes[1];
2881                                 // copy points
2882                                 for (j = portal->numpoints - 1;j >= 0;j--)
2883                                 {
2884                                         VectorCopy(p->points + j*3, point->position);
2885                                         point++;
2886                                 }
2887                                 BoxFromPoints(portal->mins, portal->maxs, portal->numpoints, portal->points->position);
2888                                 PlaneClassify(&portal->plane);
2889
2890                                 // link into leaf's portal chain
2891                                 portal->next = portal->here->portals;
2892                                 portal->here->portals = portal;
2893
2894                                 // advance to next portal
2895                                 portal++;
2896                         }
2897                         // add the portal's polygon points to the leaf bounding boxes
2898                         for (i = 0;i < 2;i++)
2899                         {
2900                                 leaf = (mleaf_t *)p->nodes[i];
2901                                 for (j = 0;j < p->numpoints;j++)
2902                                 {
2903                                         if (leaf->mins[0] > p->points[j*3+0]) leaf->mins[0] = p->points[j*3+0];
2904                                         if (leaf->mins[1] > p->points[j*3+1]) leaf->mins[1] = p->points[j*3+1];
2905                                         if (leaf->mins[2] > p->points[j*3+2]) leaf->mins[2] = p->points[j*3+2];
2906                                         if (leaf->maxs[0] < p->points[j*3+0]) leaf->maxs[0] = p->points[j*3+0];
2907                                         if (leaf->maxs[1] < p->points[j*3+1]) leaf->maxs[1] = p->points[j*3+1];
2908                                         if (leaf->maxs[2] < p->points[j*3+2]) leaf->maxs[2] = p->points[j*3+2];
2909                                 }
2910                         }
2911                 }
2912                 FreePortal(p);
2913                 p = pnext;
2914         }
2915         // now recalculate the node bounding boxes from the leafs
2916         Mod_Q1BSP_RecursiveRecalcNodeBBox(loadmodel->brush.data_nodes);
2917 }
2918
2919 /*
2920 =============
2921 AddPortalToNodes
2922 =============
2923 */
2924 static void AddPortalToNodes(portal_t *p, mnode_t *front, mnode_t *back)
2925 {
2926         if (!front)
2927                 Host_Error("AddPortalToNodes: NULL front node");
2928         if (!back)
2929                 Host_Error("AddPortalToNodes: NULL back node");
2930         if (p->nodes[0] || p->nodes[1])
2931                 Host_Error("AddPortalToNodes: already included");
2932         // 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
2933
2934         p->nodes[0] = front;
2935         p->next[0] = (portal_t *)front->portals;
2936         front->portals = (mportal_t *)p;
2937
2938         p->nodes[1] = back;
2939         p->next[1] = (portal_t *)back->portals;
2940         back->portals = (mportal_t *)p;
2941 }
2942
2943 /*
2944 =============
2945 RemovePortalFromNode
2946 =============
2947 */
2948 static void RemovePortalFromNodes(portal_t *portal)
2949 {
2950         int i;
2951         mnode_t *node;
2952         void **portalpointer;
2953         portal_t *t;
2954         for (i = 0;i < 2;i++)
2955         {
2956                 node = portal->nodes[i];
2957
2958                 portalpointer = (void **) &node->portals;
2959                 while (1)
2960                 {
2961                         t = (portal_t *)*portalpointer;
2962                         if (!t)
2963                                 Host_Error("RemovePortalFromNodes: portal not in leaf");
2964
2965                         if (t == portal)
2966                         {
2967                                 if (portal->nodes[0] == node)
2968                                 {
2969                                         *portalpointer = portal->next[0];
2970                                         portal->nodes[0] = NULL;
2971                                 }
2972                                 else if (portal->nodes[1] == node)
2973                                 {
2974                                         *portalpointer = portal->next[1];
2975                                         portal->nodes[1] = NULL;
2976                                 }
2977                                 else
2978                                         Host_Error("RemovePortalFromNodes: portal not bounding leaf");
2979                                 break;
2980                         }
2981
2982                         if (t->nodes[0] == node)
2983                                 portalpointer = (void **) &t->next[0];
2984                         else if (t->nodes[1] == node)
2985                                 portalpointer = (void **) &t->next[1];
2986                         else
2987                                 Host_Error("RemovePortalFromNodes: portal not bounding leaf");
2988                 }
2989         }
2990 }
2991
2992 #define PORTAL_DIST_EPSILON (1.0 / 32.0)
2993 static void Mod_Q1BSP_RecursiveNodePortals(mnode_t *node)
2994 {
2995         int i, side;
2996         mnode_t *front, *back, *other_node;
2997         mplane_t clipplane, *plane;
2998         portal_t *portal, *nextportal, *nodeportal, *splitportal, *temp;
2999         int numfrontpoints, numbackpoints;
3000         double frontpoints[3*MAX_PORTALPOINTS], backpoints[3*MAX_PORTALPOINTS];
3001
3002         // if a leaf, we're done
3003         if (!node->plane)
3004                 return;
3005
3006         plane = node->plane;
3007
3008         front = node->children[0];
3009         back = node->children[1];
3010         if (front == back)
3011                 Host_Error("Mod_Q1BSP_RecursiveNodePortals: corrupt node hierarchy");
3012
3013         // create the new portal by generating a polygon for the node plane,
3014         // and clipping it by all of the other portals(which came from nodes above this one)
3015         nodeportal = AllocPortal();
3016         nodeportal->plane = *plane;
3017
3018         // TODO: calculate node bounding boxes during recursion and calculate a maximum plane size accordingly to improve precision (as most maps do not need 1 billion unit plane polygons)
3019         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);
3020         nodeportal->numpoints = 4;
3021         side = 0;       // shut up compiler warning
3022         for (portal = (portal_t *)node->portals;portal;portal = portal->next[side])
3023         {
3024                 clipplane = portal->plane;
3025                 if (portal->nodes[0] == portal->nodes[1])
3026                         Host_Error("Mod_Q1BSP_RecursiveNodePortals: portal has same node on both sides(1)");
3027                 if (portal->nodes[0] == node)
3028                         side = 0;
3029                 else if (portal->nodes[1] == node)
3030                 {
3031                         clipplane.dist = -clipplane.dist;
3032                         VectorNegate(clipplane.normal, clipplane.normal);
3033                         side = 1;
3034                 }
3035                 else
3036                         Host_Error("Mod_Q1BSP_RecursiveNodePortals: mislinked portal");
3037
3038                 for (i = 0;i < nodeportal->numpoints*3;i++)
3039                         frontpoints[i] = nodeportal->points[i];
3040                 PolygonD_Divide(nodeportal->numpoints, frontpoints, clipplane.normal[0], clipplane.normal[1], clipplane.normal[2], clipplane.dist, PORTAL_DIST_EPSILON, MAX_PORTALPOINTS, nodeportal->points, &nodeportal->numpoints, 0, NULL, NULL, NULL);
3041                 if (nodeportal->numpoints <= 0 || nodeportal->numpoints >= MAX_PORTALPOINTS)
3042                         break;
3043         }
3044
3045         if (nodeportal->numpoints < 3)
3046         {
3047                 Con_Print("Mod_Q1BSP_RecursiveNodePortals: WARNING: new portal was clipped away\n");
3048                 nodeportal->numpoints = 0;
3049         }
3050         else if (nodeportal->numpoints >= MAX_PORTALPOINTS)
3051         {
3052                 Con_Print("Mod_Q1BSP_RecursiveNodePortals: WARNING: new portal has too many points\n");
3053                 nodeportal->numpoints = 0;
3054         }
3055
3056         AddPortalToNodes(nodeportal, front, back);
3057
3058         // split the portals of this node along this node's plane and assign them to the children of this node
3059         // (migrating the portals downward through the tree)
3060         for (portal = (portal_t *)node->portals;portal;portal = nextportal)
3061         {
3062                 if (portal->nodes[0] == portal->nodes[1])
3063                         Host_Error("Mod_Q1BSP_RecursiveNodePortals: portal has same node on both sides(2)");
3064                 if (portal->nodes[0] == node)
3065                         side = 0;
3066                 else if (portal->nodes[1] == node)
3067                         side = 1;
3068                 else
3069                         Host_Error("Mod_Q1BSP_RecursiveNodePortals: mislinked portal");
3070                 nextportal = portal->next[side];
3071                 if (!portal->numpoints)
3072                         continue;
3073
3074                 other_node = portal->nodes[!side];
3075                 RemovePortalFromNodes(portal);
3076
3077                 // cut the portal into two portals, one on each side of the node plane
3078                 PolygonD_Divide(portal->numpoints, portal->points, plane->normal[0], plane->normal[1], plane->normal[2], plane->dist, PORTAL_DIST_EPSILON, MAX_PORTALPOINTS, frontpoints, &numfrontpoints, MAX_PORTALPOINTS, backpoints, &numbackpoints, NULL);
3079
3080                 if (!numfrontpoints)
3081                 {
3082                         if (side == 0)
3083                                 AddPortalToNodes(portal, back, other_node);
3084                         else
3085                                 AddPortalToNodes(portal, other_node, back);
3086                         continue;
3087                 }
3088                 if (!numbackpoints)
3089                 {
3090                         if (side == 0)
3091                                 AddPortalToNodes(portal, front, other_node);
3092                         else
3093                                 AddPortalToNodes(portal, other_node, front);
3094                         continue;
3095                 }
3096
3097                 // the portal is split
3098                 splitportal = AllocPortal();
3099                 temp = splitportal->chain;
3100                 *splitportal = *portal;
3101                 splitportal->chain = temp;
3102                 for (i = 0;i < numbackpoints*3;i++)
3103                         splitportal->points[i] = backpoints[i];
3104                 splitportal->numpoints = numbackpoints;
3105                 for (i = 0;i < numfrontpoints*3;i++)
3106                         portal->points[i] = frontpoints[i];
3107                 portal->numpoints = numfrontpoints;
3108
3109                 if (side == 0)
3110                 {
3111                         AddPortalToNodes(portal, front, other_node);
3112                         AddPortalToNodes(splitportal, back, other_node);
3113                 }
3114                 else
3115                 {
3116                         AddPortalToNodes(portal, other_node, front);
3117                         AddPortalToNodes(splitportal, other_node, back);
3118                 }
3119         }
3120
3121         Mod_Q1BSP_RecursiveNodePortals(front);
3122         Mod_Q1BSP_RecursiveNodePortals(back);
3123 }
3124
3125 static void Mod_Q1BSP_MakePortals(void)
3126 {
3127         portalchain = NULL;
3128         Mod_Q1BSP_RecursiveNodePortals(loadmodel->brush.data_nodes);
3129         Mod_Q1BSP_FinalizePortals();
3130 }
3131
3132 static void Mod_Q1BSP_BuildLightmapUpdateChains(mempool_t *mempool, model_t *model)
3133 {
3134         int i, j, stylecounts[256], totalcount, remapstyles[256];
3135         msurface_t *surface;
3136         memset(stylecounts, 0, sizeof(stylecounts));
3137         for (i = 0;i < model->nummodelsurfaces;i++)
3138         {
3139                 surface = model->data_surfaces + model->firstmodelsurface + i;
3140                 for (j = 0;j < MAXLIGHTMAPS;j++)
3141                         stylecounts[surface->lightmapinfo->styles[j]]++;
3142         }
3143         totalcount = 0;
3144         model->brushq1.light_styles = 0;
3145         for (i = 0;i < 255;i++)
3146         {
3147                 if (stylecounts[i])
3148                 {
3149                         remapstyles[i] = model->brushq1.light_styles++;
3150                         totalcount += stylecounts[i] + 1;
3151                 }
3152         }
3153         if (!totalcount)
3154                 return;
3155         model->brushq1.light_style = (unsigned char *)Mem_Alloc(mempool, model->brushq1.light_styles * sizeof(unsigned char));
3156         model->brushq1.light_stylevalue = (int *)Mem_Alloc(mempool, model->brushq1.light_styles * sizeof(int));
3157         model->brushq1.light_styleupdatechains = (msurface_t ***)Mem_Alloc(mempool, model->brushq1.light_styles * sizeof(msurface_t **));
3158         model->brushq1.light_styleupdatechainsbuffer = (msurface_t **)Mem_Alloc(mempool, totalcount * sizeof(msurface_t *));
3159         model->brushq1.light_styles = 0;
3160         for (i = 0;i < 255;i++)
3161                 if (stylecounts[i])
3162                         model->brushq1.light_style[model->brushq1.light_styles++] = i;
3163         j = 0;
3164         for (i = 0;i < model->brushq1.light_styles;i++)
3165         {
3166                 model->brushq1.light_styleupdatechains[i] = model->brushq1.light_styleupdatechainsbuffer + j;
3167                 j += stylecounts[model->brushq1.light_style[i]] + 1;
3168         }
3169         for (i = 0;i < model->nummodelsurfaces;i++)
3170         {
3171                 surface = model->data_surfaces + model->firstmodelsurface + i;
3172                 for (j = 0;j < MAXLIGHTMAPS;j++)
3173                         if (surface->lightmapinfo->styles[j] != 255)
3174                                 *model->brushq1.light_styleupdatechains[remapstyles[surface->lightmapinfo->styles[j]]]++ = surface;
3175         }
3176         j = 0;
3177         for (i = 0;i < model->brushq1.light_styles;i++)
3178         {
3179                 *model->brushq1.light_styleupdatechains[i] = NULL;
3180                 model->brushq1.light_styleupdatechains[i] = model->brushq1.light_styleupdatechainsbuffer + j;
3181                 j += stylecounts[model->brushq1.light_style[i]] + 1;
3182         }
3183 }
3184
3185 //Returns PVS data for a given point
3186 //(note: can return NULL)
3187 static unsigned char *Mod_Q1BSP_GetPVS(model_t *model, const vec3_t p)
3188 {
3189         mnode_t *node;
3190         node = model->brush.data_nodes;
3191         while (node->plane)
3192                 node = node->children[(node->plane->type < 3 ? p[node->plane->type] : DotProduct(p,node->plane->normal)) < node->plane->dist];
3193         if (((mleaf_t *)node)->clusterindex >= 0)
3194                 return model->brush.data_pvsclusters + ((mleaf_t *)node)->clusterindex * model->brush.num_pvsclusterbytes;
3195         else
3196                 return NULL;
3197 }
3198
3199 static void Mod_Q1BSP_FatPVS_RecursiveBSPNode(model_t *model, const vec3_t org, vec_t radius, unsigned char *pvsbuffer, int pvsbytes, mnode_t *node)
3200 {
3201         while (node->plane)
3202         {
3203                 float d = PlaneDiff(org, node->plane);
3204                 if (d > radius)
3205                         node = node->children[0];
3206                 else if (d < -radius)
3207                         node = node->children[1];
3208                 else
3209                 {
3210                         // go down both sides
3211                         Mod_Q1BSP_FatPVS_RecursiveBSPNode(model, org, radius, pvsbuffer, pvsbytes, node->children[0]);
3212                         node = node->children[1];
3213                 }
3214         }
3215         // if this leaf is in a cluster, accumulate the pvs bits
3216         if (((mleaf_t *)node)->clusterindex >= 0)
3217         {
3218                 int i;
3219                 unsigned char *pvs = model->brush.data_pvsclusters + ((mleaf_t *)node)->clusterindex * model->brush.num_pvsclusterbytes;
3220                 for (i = 0;i < pvsbytes;i++)
3221                         pvsbuffer[i] |= pvs[i];
3222         }
3223 }
3224
3225 //Calculates a PVS that is the inclusive or of all leafs within radius pixels
3226 //of the given point.
3227 static int Mod_Q1BSP_FatPVS(model_t *model, const vec3_t org, vec_t radius, unsigned char *pvsbuffer, int pvsbufferlength)
3228 {
3229         int bytes = model->brush.num_pvsclusterbytes;
3230         bytes = min(bytes, pvsbufferlength);
3231         if (r_novis.integer || !model->brush.num_pvsclusters || !Mod_Q1BSP_GetPVS(model, org))
3232         {
3233                 memset(pvsbuffer, 0xFF, bytes);
3234                 return bytes;
3235         }
3236         memset(pvsbuffer, 0, bytes);
3237         Mod_Q1BSP_FatPVS_RecursiveBSPNode(model, org, radius, pvsbuffer, bytes, model->brush.data_nodes);
3238         return bytes;
3239 }
3240
3241 static void Mod_Q1BSP_RoundUpToHullSize(model_t *cmodel, const vec3_t inmins, const vec3_t inmaxs, vec3_t outmins, vec3_t outmaxs)
3242 {
3243         vec3_t size;
3244         const hull_t *hull;
3245
3246         VectorSubtract(inmaxs, inmins, size);
3247         if (cmodel->brush.ismcbsp)
3248         {
3249                 if (size[0] < 3)
3250                         hull = &cmodel->brushq1.hulls[0]; // 0x0x0
3251                 else if (size[2] < 48) // pick the nearest of 40 or 56
3252                         hull = &cmodel->brushq1.hulls[2]; // 16x16x40
3253                 else
3254                         hull = &cmodel->brushq1.hulls[1]; // 16x16x56
3255         }
3256         else if (cmodel->brush.ishlbsp)
3257         {
3258                 if (size[0] < 3)
3259                         hull = &cmodel->brushq1.hulls[0]; // 0x0x0
3260                 else if (size[0] <= 32)
3261                 {
3262                         if (size[2] < 54) // pick the nearest of 36 or 72
3263                                 hull = &cmodel->brushq1.hulls[3]; // 32x32x36
3264                         else
3265                                 hull = &cmodel->brushq1.hulls[1]; // 32x32x72
3266                 }
3267                 else
3268                         hull = &cmodel->brushq1.hulls[2]; // 64x64x64
3269         }
3270         else
3271         {
3272                 if (size[0] < 3)
3273                         hull = &cmodel->brushq1.hulls[0]; // 0x0x0
3274                 else if (size[0] <= 32)
3275                         hull = &cmodel->brushq1.hulls[1]; // 32x32x56
3276                 else
3277                         hull = &cmodel->brushq1.hulls[2]; // 64x64x88
3278         }
3279         VectorCopy(inmins, outmins);
3280         VectorAdd(inmins, hull->clip_size, outmaxs);
3281 }
3282
3283 void Mod_Q1BSP_Load(model_t *mod, void *buffer, void *bufferend)
3284 {
3285         int i, j, k;
3286         dheader_t *header;
3287         dmodel_t *bm;
3288         mempool_t *mainmempool;
3289         float dist, modelyawradius, modelradius, *vec;
3290         msurface_t *surface;
3291         int numshadowmeshtriangles;
3292         dheader_t _header;
3293         hullinfo_t hullinfo;
3294
3295         mod->type = mod_brushq1;
3296
3297         if (!memcmp (buffer, "MCBSPpad", 8))
3298         {
3299                 unsigned char   *index;
3300
3301                 mod->brush.ismcbsp = true;
3302                 mod->brush.ishlbsp = false;
3303
3304                 mod_base = (unsigned char*)buffer;
3305
3306                 index = mod_base;
3307                 index += 8;
3308                 i = SB_ReadInt (&index);
3309                 if (i != MCBSPVERSION)
3310                         Host_Error("Mod_Q1BSP_Load: %s has wrong version number(%i should be %i)", mod->name, i, MCBSPVERSION);
3311
3312         // read hull info
3313                 hullinfo.numhulls = LittleLong(*(int*)index); index += 4;
3314                 hullinfo.filehulls = hullinfo.numhulls;
3315                 VectorClear (hullinfo.hullsizes[0][0]);
3316                 VectorClear (hullinfo.hullsizes[0][1]);
3317                 for (i = 1; i < hullinfo.numhulls; i++)
3318                 {
3319                         hullinfo.hullsizes[i][0][0] = SB_ReadFloat (&index);
3320                         hullinfo.hullsizes[i][0][1] = SB_ReadFloat (&index);
3321                         hullinfo.hullsizes[i][0][2] = SB_ReadFloat (&index);
3322                         hullinfo.hullsizes[i][1][0] = SB_ReadFloat (&index);
3323                         hullinfo.hullsizes[i][1][1] = SB_ReadFloat (&index);
3324                         hullinfo.hullsizes[i][1][2] = SB_ReadFloat (&index);
3325                 }
3326
3327         // read lumps
3328                 _header.version = 0;
3329                 for (i = 0; i < HEADER_LUMPS; i++)
3330                 {
3331                         _header.lumps[i].fileofs = SB_ReadInt (&index);
3332                         _header.lumps[i].filelen = SB_ReadInt (&index);
3333                 }
3334
3335                 header = &_header;
3336         }
3337         else
3338         {
3339                 header = (dheader_t *)buffer;
3340
3341                 i = LittleLong(header->version);
3342                 if (i != BSPVERSION && i != 30)
3343                         Host_Error("Mod_Q1BSP_Load: %s has wrong version number(%i should be %i(Quake) or 30(HalfLife)", mod->name, i, BSPVERSION);
3344                 mod->brush.ishlbsp = i == 30;
3345                 mod->brush.ismcbsp = false;
3346
3347         // fill in hull info
3348                 VectorClear (hullinfo.hullsizes[0][0]);
3349                 VectorClear (hullinfo.hullsizes[0][1]);
3350                 if (mod->brush.ishlbsp)
3351                 {
3352                         hullinfo.numhulls = 4;
3353                         hullinfo.filehulls = 4;
3354                         VectorSet (hullinfo.hullsizes[1][0], -16, -16, -36);
3355                         VectorSet (hullinfo.hullsizes[1][1], 16, 16, 36);
3356                         VectorSet (hullinfo.hullsizes[2][0], -32, -32, -32);
3357                         VectorSet (hullinfo.hullsizes[2][1], 32, 32, 32);
3358                         VectorSet (hullinfo.hullsizes[3][0], -16, -16, -18);
3359                         VectorSet (hullinfo.hullsizes[3][1], 16, 16, 18);
3360                 }
3361                 else
3362                 {
3363                         hullinfo.numhulls = 3;
3364                         hullinfo.filehulls = 4;
3365                         VectorSet (hullinfo.hullsizes[1][0], -16, -16, -24);
3366                         VectorSet (hullinfo.hullsizes[1][1], 16, 16, 32);
3367                         VectorSet (hullinfo.hullsizes[2][0], -32, -32, -24);
3368                         VectorSet (hullinfo.hullsizes[2][1], 32, 32, 64);
3369                 }
3370
3371         // read lumps
3372                 mod_base = (unsigned char*)buffer;
3373                 for (i = 0; i < HEADER_LUMPS; i++)
3374                 {
3375                         header->lumps[i].fileofs = LittleLong(header->lumps[i].fileofs);
3376                         header->lumps[i].filelen = LittleLong(header->lumps[i].filelen);
3377                 }
3378         }
3379
3380         mod->soundfromcenter = true;
3381         mod->TraceBox = Mod_Q1BSP_TraceBox;
3382         mod->brush.TraceLineOfSight = Mod_Q1BSP_TraceLineOfSight;
3383         mod->brush.SuperContentsFromNativeContents = Mod_Q1BSP_SuperContentsFromNativeContents;
3384         mod->brush.NativeContentsFromSuperContents = Mod_Q1BSP_NativeContentsFromSuperContents;
3385         mod->brush.GetPVS = Mod_Q1BSP_GetPVS;
3386         mod->brush.FatPVS = Mod_Q1BSP_FatPVS;
3387         mod->brush.BoxTouchingPVS = Mod_Q1BSP_BoxTouchingPVS;
3388         mod->brush.BoxTouchingLeafPVS = Mod_Q1BSP_BoxTouchingLeafPVS;
3389         mod->brush.BoxTouchingVisibleLeafs = Mod_Q1BSP_BoxTouchingVisibleLeafs;
3390         mod->brush.FindBoxClusters = Mod_Q1BSP_FindBoxClusters;
3391         mod->brush.LightPoint = Mod_Q1BSP_LightPoint;
3392         mod->brush.FindNonSolidLocation = Mod_Q1BSP_FindNonSolidLocation;
3393         mod->brush.AmbientSoundLevelsForPoint = Mod_Q1BSP_AmbientSoundLevelsForPoint;
3394         mod->brush.RoundUpToHullSize = Mod_Q1BSP_RoundUpToHullSize;
3395         mod->brush.PointInLeaf = Mod_Q1BSP_PointInLeaf;
3396
3397         if (loadmodel->isworldmodel)
3398         {
3399                 Cvar_SetValue("halflifebsp", mod->brush.ishlbsp);
3400                 Cvar_SetValue("mcbsp", mod->brush.ismcbsp);
3401         }
3402
3403 // load into heap
3404
3405         // store which lightmap format to use
3406         mod->brushq1.lightmaprgba = r_lightmaprgba.integer;
3407
3408         mod->brush.qw_md4sum = 0;
3409         mod->brush.qw_md4sum2 = 0;
3410         for (i = 0;i < HEADER_LUMPS;i++)
3411         {
3412                 if (i == LUMP_ENTITIES)
3413                         continue;
3414                 mod->brush.qw_md4sum ^= LittleLong(Com_BlockChecksum(mod_base + header->lumps[i].fileofs, header->lumps[i].filelen));
3415                 if (i == LUMP_VISIBILITY || i == LUMP_LEAFS || i == LUMP_NODES)
3416                         continue;
3417                 mod->brush.qw_md4sum2 ^= LittleLong(Com_BlockChecksum(mod_base + header->lumps[i].fileofs, header->lumps[i].filelen));
3418         }
3419
3420         Mod_Q1BSP_LoadEntities(&header->lumps[LUMP_ENTITIES]);
3421         Mod_Q1BSP_LoadVertexes(&header->lumps[LUMP_VERTEXES]);
3422         Mod_Q1BSP_LoadEdges(&header->lumps[LUMP_EDGES]);
3423         Mod_Q1BSP_LoadSurfedges(&header->lumps[LUMP_SURFEDGES]);
3424         Mod_Q1BSP_LoadTextures(&header->lumps[LUMP_TEXTURES]);
3425         Mod_Q1BSP_LoadLighting(&header->lumps[LUMP_LIGHTING]);
3426         Mod_Q1BSP_LoadPlanes(&header->lumps[LUMP_PLANES]);
3427         Mod_Q1BSP_LoadTexinfo(&header->lumps[LUMP_TEXINFO]);
3428         Mod_Q1BSP_LoadFaces(&header->lumps[LUMP_FACES]);
3429         Mod_Q1BSP_LoadLeaffaces(&header->lumps[LUMP_MARKSURFACES]);
3430         Mod_Q1BSP_LoadVisibility(&header->lumps[LUMP_VISIBILITY]);
3431         // load submodels before leafs because they contain the number of vis leafs
3432         Mod_Q1BSP_LoadSubmodels(&header->lumps[LUMP_MODELS], &hullinfo);
3433         Mod_Q1BSP_LoadLeafs(&header->lumps[LUMP_LEAFS]);
3434         Mod_Q1BSP_LoadNodes(&header->lumps[LUMP_NODES]);
3435         Mod_Q1BSP_LoadClipnodes(&header->lumps[LUMP_CLIPNODES], &hullinfo);
3436
3437         // check if the map supports transparent water rendering
3438         loadmodel->brush.supportwateralpha = Mod_Q1BSP_CheckWaterAlphaSupport();
3439
3440         if (mod->brushq1.data_compressedpvs)
3441                 Mem_Free(mod->brushq1.data_compressedpvs);
3442         mod->brushq1.data_compressedpvs = NULL;
3443         mod->brushq1.num_compressedpvs = 0;
3444
3445         Mod_Q1BSP_MakeHull0();
3446         Mod_Q1BSP_MakePortals();
3447
3448         mod->numframes = 2;             // regular and alternate animation
3449         mod->numskins = 1;
3450
3451         mainmempool = mod->mempool;
3452
3453         // make a single combined shadow mesh to allow optimized shadow volume creation
3454         numshadowmeshtriangles = 0;
3455         for (j = 0, surface = loadmodel->data_surfaces;j < loadmodel->num_surfaces;j++, surface++)
3456         {
3457                 surface->num_firstshadowmeshtriangle = numshadowmeshtriangles;
3458                 numshadowmeshtriangles += surface->num_triangles;
3459         }
3460         loadmodel->brush.shadowmesh = Mod_ShadowMesh_Begin(loadmodel->mempool, numshadowmeshtriangles * 3, numshadowmeshtriangles, NULL, NULL, NULL, false, false, true);
3461         for (j = 0, surface = loadmodel->data_surfaces;j < loadmodel->num_surfaces;j++, surface++)
3462                 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));
3463         loadmodel->brush.shadowmesh = Mod_ShadowMesh_Finish(loadmodel->mempool, loadmodel->brush.shadowmesh, false, true, false);
3464         Mod_BuildTriangleNeighbors(loadmodel->brush.shadowmesh->neighbor3i, loadmodel->brush.shadowmesh->element3i, loadmodel->brush.shadowmesh->numtriangles);
3465
3466         if (loadmodel->brush.numsubmodels)
3467                 loadmodel->brush.submodels = (model_t **)Mem_Alloc(loadmodel->mempool, loadmodel->brush.numsubmodels * sizeof(model_t *));
3468
3469         if (loadmodel->isworldmodel)
3470         {
3471                 // clear out any stale submodels or worldmodels lying around
3472                 // if we did this clear before now, an error might abort loading and
3473                 // leave things in a bad state
3474                 Mod_RemoveStaleWorldModels(loadmodel);
3475         }
3476
3477         // LordHavoc: to clear the fog around the original quake submodel code, I
3478         // will explain:
3479         // first of all, some background info on the submodels:
3480         // model 0 is the map model (the world, named maps/e1m1.bsp for example)
3481         // model 1 and higher are submodels (doors and the like, named *1, *2, etc)
3482         // now the weird for loop itself:
3483         // the loop functions in an odd way, on each iteration it sets up the
3484         // current 'mod' model (which despite the confusing code IS the model of
3485         // the number i), at the end of the loop it duplicates the model to become
3486         // the next submodel, and loops back to set up the new submodel.
3487
3488         // LordHavoc: now the explanation of my sane way (which works identically):
3489         // set up the world model, then on each submodel copy from the world model
3490         // and set up the submodel with the respective model info.
3491         for (i = 0;i < mod->brush.numsubmodels;i++)
3492         {
3493                 // LordHavoc: this code was originally at the end of this loop, but
3494                 // has been transformed to something more readable at the start here.
3495
3496                 if (i > 0)
3497                 {
3498                         char name[10];
3499                         // LordHavoc: only register submodels if it is the world
3500                         // (prevents external bsp models from replacing world submodels with
3501                         //  their own)
3502                         if (!loadmodel->isworldmodel)
3503                                 continue;
3504                         // duplicate the basic information
3505                         sprintf(name, "*%i", i);
3506                         mod = Mod_FindName(name);
3507                         // copy the base model to this one
3508                         *mod = *loadmodel;
3509                         // rename the clone back to its proper name
3510                         strlcpy(mod->name, name, sizeof(mod->name));
3511                         // textures and memory belong to the main model
3512                         mod->texturepool = NULL;
3513                         mod->mempool = NULL;
3514                 }
3515
3516                 mod->brush.submodel = i;
3517
3518                 if (loadmodel->brush.submodels)
3519                         loadmodel->brush.submodels[i] = mod;
3520
3521                 bm = &mod->brushq1.submodels[i];
3522
3523                 mod->brushq1.hulls[0].firstclipnode = bm->headnode[0];
3524                 for (j=1 ; j<MAX_MAP_HULLS ; j++)
3525                 {
3526                         mod->brushq1.hulls[j].firstclipnode = bm->headnode[j];
3527                         mod->brushq1.hulls[j].lastclipnode = mod->brushq1.numclipnodes - 1;
3528                 }
3529
3530                 mod->firstmodelsurface = bm->firstface;
3531                 mod->nummodelsurfaces = bm->numfaces;
3532
3533                 // make the model surface list (used by shadowing/lighting)
3534                 mod->surfacelist = (int *)Mem_Alloc(loadmodel->mempool, mod->nummodelsurfaces * sizeof(*mod->surfacelist));
3535                 for (j = 0;j < mod->nummodelsurfaces;j++)
3536                         mod->surfacelist[j] = mod->firstmodelsurface + j;
3537
3538                 // this gets altered below if sky is used
3539                 mod->DrawSky = NULL;
3540                 mod->Draw = R_Q1BSP_Draw;
3541                 mod->DrawDepth = R_Q1BSP_DrawDepth;
3542                 mod->GetLightInfo = R_Q1BSP_GetLightInfo;
3543                 mod->CompileShadowVolume = R_Q1BSP_CompileShadowVolume;
3544                 mod->DrawShadowVolume = R_Q1BSP_DrawShadowVolume;
3545                 mod->DrawLight = R_Q1BSP_DrawLight;
3546                 if (i != 0)
3547                 {
3548                         mod->brush.TraceLineOfSight = NULL;
3549                         mod->brush.GetPVS = NULL;
3550                         mod->brush.FatPVS = NULL;
3551                         mod->brush.BoxTouchingPVS = NULL;
3552                         mod->brush.BoxTouchingLeafPVS = NULL;
3553                         mod->brush.BoxTouchingVisibleLeafs = NULL;
3554                         mod->brush.FindBoxClusters = NULL;
3555                         mod->brush.LightPoint = NULL;
3556                         mod->brush.AmbientSoundLevelsForPoint = NULL;
3557                 }
3558                 Mod_Q1BSP_BuildLightmapUpdateChains(loadmodel->mempool, mod);
3559                 if (mod->nummodelsurfaces)
3560                 {
3561                         // LordHavoc: calculate bmodel bounding box rather than trusting what it says
3562                         mod->normalmins[0] = mod->normalmins[1] = mod->normalmins[2] = 1000000000.0f;
3563                         mod->normalmaxs[0] = mod->normalmaxs[1] = mod->normalmaxs[2] = -1000000000.0f;
3564                         modelyawradius = 0;
3565                         modelradius = 0;
3566                         for (j = 0, surface = &mod->data_surfaces[mod->firstmodelsurface];j < mod->nummodelsurfaces;j++, surface++)
3567                         {
3568                                 // we only need to have a drawsky function if it is used(usually only on world model)
3569                                 if (surface->texture->basematerialflags & MATERIALFLAG_SKY)
3570                                         mod->DrawSky = R_Q1BSP_DrawSky;
3571                                 // calculate bounding shapes
3572                                 for (k = 0, vec = (loadmodel->surfmesh.data_vertex3f + 3 * surface->num_firstvertex);k < surface->num_vertices;k++, vec += 3)
3573                                 {
3574                                         if (mod->normalmins[0] > vec[0]) mod->normalmins[0] = vec[0];
3575                                         if (mod->normalmins[1] > vec[1]) mod->normalmins[1] = vec[1];
3576                                         if (mod->normalmins[2] > vec[2]) mod->normalmins[2] = vec[2];
3577                                         if (mod->normalmaxs[0] < vec[0]) mod->normalmaxs[0] = vec[0];
3578                                         if (mod->normalmaxs[1] < vec[1]) mod->normalmaxs[1] = vec[1];
3579                                         if (mod->normalmaxs[2] < vec[2]) mod->normalmaxs[2] = vec[2];
3580                                         dist = vec[0]*vec[0]+vec[1]*vec[1];
3581                                         if (modelyawradius < dist)
3582                                                 modelyawradius = dist;
3583                                         dist += vec[2]*vec[2];
3584                                         if (modelradius < dist)
3585                                                 modelradius = dist;
3586                                 }
3587                         }
3588                         modelyawradius = sqrt(modelyawradius);
3589                         modelradius = sqrt(modelradius);
3590                         mod->yawmins[0] = mod->yawmins[1] = - (mod->yawmaxs[0] = mod->yawmaxs[1] = modelyawradius);
3591                         mod->yawmins[2] = mod->normalmins[2];
3592                         mod->yawmaxs[2] = mod->normalmaxs[2];
3593                         mod->rotatedmins[0] = mod->rotatedmins[1] = mod->rotatedmins[2] = -modelradius;
3594                         mod->rotatedmaxs[0] = mod->rotatedmaxs[1] = mod->rotatedmaxs[2] = modelradius;
3595                         mod->radius = modelradius;
3596                         mod->radius2 = modelradius * modelradius;
3597                 }
3598                 else
3599                 {
3600                         // LordHavoc: empty submodel(lacrima.bsp has such a glitch)
3601                         Con_Printf("warning: empty submodel *%i in %s\n", i+1, loadmodel->name);
3602                 }
3603                 //mod->brushq1.num_visleafs = bm->visleafs;
3604         }
3605
3606         Mod_Q1BSP_LoadMapBrushes();
3607
3608         //Mod_Q1BSP_ProcessLightList();
3609
3610         if (developer.integer >= 10)
3611                 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);
3612 }
3613
3614 static void Mod_Q2BSP_LoadEntities(lump_t *l)
3615 {
3616 }
3617
3618 static void Mod_Q2BSP_LoadPlanes(lump_t *l)
3619 {
3620 /*
3621         d_t *in;
3622         m_t *out;
3623         int i, count;
3624
3625         in = (void *)(mod_base + l->fileofs);
3626         if (l->filelen % sizeof(*in))
3627                 Host_Error("Mod_Q2BSP_LoadPlanes: funny lump size in %s",loadmodel->name);
3628         count = l->filelen / sizeof(*in);
3629         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
3630
3631         loadmodel-> = out;
3632         loadmodel->num = count;
3633
3634         for (i = 0;i < count;i++, in++, out++)
3635         {
3636         }
3637 */
3638 }
3639
3640 static void Mod_Q2BSP_LoadVertices(lump_t *l)
3641 {
3642 /*
3643         d_t *in;
3644         m_t *out;
3645         int i, count;
3646
3647         in = (void *)(mod_base + l->fileofs);
3648         if (l->filelen % sizeof(*in))
3649                 Host_Error("Mod_Q2BSP_LoadVertices: funny lump size in %s",loadmodel->name);
3650         count = l->filelen / sizeof(*in);
3651         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
3652
3653         loadmodel-> = out;
3654         loadmodel->num = count;
3655
3656         for (i = 0;i < count;i++, in++, out++)
3657         {
3658         }
3659 */
3660 }
3661
3662 static void Mod_Q2BSP_LoadVisibility(lump_t *l)
3663 {
3664 /*
3665         d_t *in;
3666         m_t *out;
3667         int i, count;
3668
3669         in = (void *)(mod_base + l->fileofs);
3670         if (l->filelen % sizeof(*in))
3671                 Host_Error("Mod_Q2BSP_LoadVisibility: funny lump size in %s",loadmodel->name);
3672         count = l->filelen / sizeof(*in);
3673         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
3674
3675         loadmodel-> = out;
3676         loadmodel->num = count;
3677
3678         for (i = 0;i < count;i++, in++, out++)
3679         {
3680         }
3681 */
3682 }
3683
3684 static void Mod_Q2BSP_LoadNodes(lump_t *l)
3685 {
3686 /*
3687         d_t *in;
3688         m_t *out;
3689         int i, count;
3690
3691         in = (void *)(mod_base + l->fileofs);
3692         if (l->filelen % sizeof(*in))
3693                 Host_Error("Mod_Q2BSP_LoadNodes: funny lump size in %s",loadmodel->name);
3694         count = l->filelen / sizeof(*in);
3695         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
3696
3697         loadmodel-> = out;
3698         loadmodel->num = count;
3699
3700         for (i = 0;i < count;i++, in++, out++)
3701         {
3702         }
3703 */
3704 }
3705
3706 static void Mod_Q2BSP_LoadTexInfo(lump_t *l)
3707 {
3708 /*
3709         d_t *in;
3710         m_t *out;
3711         int i, count;
3712
3713         in = (void *)(mod_base + l->fileofs);
3714         if (l->filelen % sizeof(*in))
3715                 Host_Error("Mod_Q2BSP_LoadTexInfo: funny lump size in %s",loadmodel->name);
3716         count = l->filelen / sizeof(*in);
3717         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
3718
3719         loadmodel-> = out;
3720         loadmodel->num = count;
3721
3722         for (i = 0;i < count;i++, in++, out++)
3723         {
3724         }
3725 */
3726 }
3727
3728 static void Mod_Q2BSP_LoadFaces(lump_t *l)
3729 {
3730 /*
3731         d_t *in;
3732         m_t *out;
3733         int i, count;
3734
3735         in = (void *)(mod_base + l->fileofs);
3736         if (l->filelen % sizeof(*in))
3737                 Host_Error("Mod_Q2BSP_LoadFaces: funny lump size in %s",loadmodel->name);
3738         count = l->filelen / sizeof(*in);
3739         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
3740
3741         loadmodel-> = out;
3742         loadmodel->num = count;
3743
3744         for (i = 0;i < count;i++, in++, out++)
3745         {
3746         }
3747 */
3748 }
3749
3750 static void Mod_Q2BSP_LoadLighting(lump_t *l)
3751 {
3752 /*
3753         d_t *in;
3754         m_t *out;
3755         int i, count;
3756
3757         in = (void *)(mod_base + l->fileofs);
3758         if (l->filelen % sizeof(*in))
3759                 Host_Error("Mod_Q2BSP_LoadLighting: funny lump size in %s",loadmodel->name);
3760         count = l->filelen / sizeof(*in);
3761         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
3762
3763         loadmodel-> = out;
3764         loadmodel->num = count;
3765
3766         for (i = 0;i < count;i++, in++, out++)
3767         {
3768         }
3769 */
3770 }
3771
3772 static void Mod_Q2BSP_LoadLeafs(lump_t *l)
3773 {
3774 /*
3775         d_t *in;
3776         m_t *out;
3777         int i, count;
3778
3779         in = (void *)(mod_base + l->fileofs);
3780         if (l->filelen % sizeof(*in))
3781                 Host_Error("Mod_Q2BSP_LoadLeafs: funny lump size in %s",loadmodel->name);
3782         count = l->filelen / sizeof(*in);
3783         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
3784
3785         loadmodel-> = out;
3786         loadmodel->num = count;
3787
3788         for (i = 0;i < count;i++, in++, out++)
3789         {
3790         }
3791 */
3792 }
3793
3794 static void Mod_Q2BSP_LoadLeafFaces(lump_t *l)
3795 {
3796 /*
3797         d_t *in;
3798         m_t *out;
3799         int i, count;
3800
3801         in = (void *)(mod_base + l->fileofs);
3802         if (l->filelen % sizeof(*in))
3803                 Host_Error("Mod_Q2BSP_LoadLeafFaces: funny lump size in %s",loadmodel->name);
3804         count = l->filelen / sizeof(*in);
3805         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
3806
3807         loadmodel-> = out;
3808         loadmodel->num = count;
3809
3810         for (i = 0;i < count;i++, in++, out++)
3811         {
3812         }
3813 */
3814 }
3815
3816 static void Mod_Q2BSP_LoadLeafBrushes(lump_t *l)
3817 {
3818 /*
3819         d_t *in;
3820         m_t *out;
3821         int i, count;
3822
3823         in = (void *)(mod_base + l->fileofs);
3824         if (l->filelen % sizeof(*in))
3825                 Host_Error("Mod_Q2BSP_LoadLeafBrushes: funny lump size in %s",loadmodel->name);
3826         count = l->filelen / sizeof(*in);
3827         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
3828
3829         loadmodel-> = out;
3830         loadmodel->num = count;
3831
3832         for (i = 0;i < count;i++, in++, out++)
3833         {
3834         }
3835 */
3836 }
3837
3838 static void Mod_Q2BSP_LoadEdges(lump_t *l)
3839 {
3840 /*
3841         d_t *in;
3842         m_t *out;
3843         int i, count;
3844
3845         in = (void *)(mod_base + l->fileofs);
3846         if (l->filelen % sizeof(*in))
3847                 Host_Error("Mod_Q2BSP_LoadEdges: funny lump size in %s",loadmodel->name);
3848         count = l->filelen / sizeof(*in);
3849         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
3850
3851         loadmodel-> = out;
3852         loadmodel->num = count;
3853
3854         for (i = 0;i < count;i++, in++, out++)
3855         {
3856         }
3857 */
3858 }
3859
3860 static void Mod_Q2BSP_LoadSurfEdges(lump_t *l)
3861 {
3862 /*
3863         d_t *in;
3864         m_t *out;
3865         int i, count;
3866
3867         in = (void *)(mod_base + l->fileofs);
3868         if (l->filelen % sizeof(*in))
3869                 Host_Error("Mod_Q2BSP_LoadSurfEdges: funny lump size in %s",loadmodel->name);
3870         count = l->filelen / sizeof(*in);
3871         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
3872
3873         loadmodel-> = out;
3874         loadmodel->num = count;
3875
3876         for (i = 0;i < count;i++, in++, out++)
3877         {
3878         }
3879 */
3880 }
3881
3882 static void Mod_Q2BSP_LoadBrushes(lump_t *l)
3883 {
3884 /*
3885         d_t *in;
3886         m_t *out;
3887         int i, count;
3888
3889         in = (void *)(mod_base + l->fileofs);
3890         if (l->filelen % sizeof(*in))
3891                 Host_Error("Mod_Q2BSP_LoadBrushes: funny lump size in %s",loadmodel->name);
3892         count = l->filelen / sizeof(*in);
3893         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
3894
3895         loadmodel-> = out;
3896         loadmodel->num = count;
3897
3898         for (i = 0;i < count;i++, in++, out++)
3899         {
3900         }
3901 */
3902 }
3903
3904 static void Mod_Q2BSP_LoadBrushSides(lump_t *l)
3905 {
3906 /*
3907         d_t *in;
3908         m_t *out;
3909         int i, count;
3910
3911         in = (void *)(mod_base + l->fileofs);
3912         if (l->filelen % sizeof(*in))
3913                 Host_Error("Mod_Q2BSP_LoadBrushSides: funny lump size in %s",loadmodel->name);
3914         count = l->filelen / sizeof(*in);
3915         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
3916
3917         loadmodel-> = out;
3918         loadmodel->num = count;
3919
3920         for (i = 0;i < count;i++, in++, out++)
3921         {
3922         }
3923 */
3924 }
3925
3926 static void Mod_Q2BSP_LoadAreas(lump_t *l)
3927 {
3928 /*
3929         d_t *in;
3930         m_t *out;
3931         int i, count;
3932
3933         in = (void *)(mod_base + l->fileofs);
3934         if (l->filelen % sizeof(*in))
3935                 Host_Error("Mod_Q2BSP_LoadAreas: funny lump size in %s",loadmodel->name);
3936         count = l->filelen / sizeof(*in);
3937         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
3938
3939         loadmodel-> = out;
3940         loadmodel->num = count;
3941
3942         for (i = 0;i < count;i++, in++, out++)
3943         {
3944         }
3945 */
3946 }
3947
3948 static void Mod_Q2BSP_LoadAreaPortals(lump_t *l)
3949 {
3950 /*
3951         d_t *in;
3952         m_t *out;
3953         int i, count;
3954
3955         in = (void *)(mod_base + l->fileofs);
3956         if (l->filelen % sizeof(*in))
3957                 Host_Error("Mod_Q2BSP_LoadAreaPortals: funny lump size in %s",loadmodel->name);
3958         count = l->filelen / sizeof(*in);
3959         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
3960
3961         loadmodel-> = out;
3962         loadmodel->num = count;
3963
3964         for (i = 0;i < count;i++, in++, out++)
3965         {
3966         }
3967 */
3968 }
3969
3970 static void Mod_Q2BSP_LoadModels(lump_t *l)
3971 {
3972 /*
3973         d_t *in;
3974         m_t *out;
3975         int i, count;
3976
3977         in = (void *)(mod_base + l->fileofs);
3978         if (l->filelen % sizeof(*in))
3979                 Host_Error("Mod_Q2BSP_LoadModels: funny lump size in %s",loadmodel->name);
3980         count = l->filelen / sizeof(*in);
3981         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
3982
3983         loadmodel-> = out;
3984         loadmodel->num = count;
3985
3986         for (i = 0;i < count;i++, in++, out++)
3987         {
3988         }
3989 */
3990 }
3991
3992 void static Mod_Q2BSP_Load(model_t *mod, void *buffer, void *bufferend)
3993 {
3994         int i;
3995         q2dheader_t *header;
3996
3997         Host_Error("Mod_Q2BSP_Load: not yet implemented");
3998
3999         mod->type = mod_brushq2;
4000
4001         header = (q2dheader_t *)buffer;
4002
4003         i = LittleLong(header->version);
4004         if (i != Q2BSPVERSION)
4005                 Host_Error("Mod_Q2BSP_Load: %s has wrong version number (%i, should be %i)", mod->name, i, Q2BSPVERSION);
4006         mod->brush.ishlbsp = false;
4007         mod->brush.ismcbsp = false;
4008         if (loadmodel->isworldmodel)
4009         {
4010                 Cvar_SetValue("halflifebsp", mod->brush.ishlbsp);
4011                 Cvar_SetValue("mcbsp", mod->brush.ismcbsp);
4012         }
4013
4014         mod_base = (unsigned char *)header;
4015
4016         // swap all the lumps
4017         for (i = 0;i < (int) sizeof(*header) / 4;i++)
4018                 ((int *)header)[i] = LittleLong(((int *)header)[i]);
4019
4020         // store which lightmap format to use
4021         mod->brushq1.lightmaprgba = r_lightmaprgba.integer;
4022
4023         mod->brush.qw_md4sum = 0;
4024         mod->brush.qw_md4sum2 = 0;
4025         for (i = 0;i < Q2HEADER_LUMPS;i++)
4026         {
4027                 if (i == Q2LUMP_ENTITIES)
4028                         continue;
4029                 mod->brush.qw_md4sum ^= Com_BlockChecksum(mod_base + header->lumps[i].fileofs, header->lumps[i].filelen);
4030                 if (i == Q2LUMP_VISIBILITY || i == Q2LUMP_LEAFS || i == Q2LUMP_NODES)
4031                         continue;
4032                 mod->brush.qw_md4sum2 ^= Com_BlockChecksum(mod_base + header->lumps[i].fileofs, header->lumps[i].filelen);
4033         }
4034
4035         Mod_Q2BSP_LoadEntities(&header->lumps[Q2LUMP_ENTITIES]);
4036         Mod_Q2BSP_LoadPlanes(&header->lumps[Q2LUMP_PLANES]);
4037         Mod_Q2BSP_LoadVertices(&header->lumps[Q2LUMP_VERTEXES]);
4038         Mod_Q2BSP_LoadVisibility(&header->lumps[Q2LUMP_VISIBILITY]);
4039         Mod_Q2BSP_LoadNodes(&header->lumps[Q2LUMP_NODES]);
4040         Mod_Q2BSP_LoadTexInfo(&header->lumps[Q2LUMP_TEXINFO]);
4041         Mod_Q2BSP_LoadFaces(&header->lumps[Q2LUMP_FACES]);
4042         Mod_Q2BSP_LoadLighting(&header->lumps[Q2LUMP_LIGHTING]);
4043         Mod_Q2BSP_LoadLeafs(&header->lumps[Q2LUMP_LEAFS]);
4044         Mod_Q2BSP_LoadLeafFaces(&header->lumps[Q2LUMP_LEAFFACES]);
4045         Mod_Q2BSP_LoadLeafBrushes(&header->lumps[Q2LUMP_LEAFBRUSHES]);
4046         Mod_Q2BSP_LoadEdges(&header->lumps[Q2LUMP_EDGES]);
4047         Mod_Q2BSP_LoadSurfEdges(&header->lumps[Q2LUMP_SURFEDGES]);
4048         Mod_Q2BSP_LoadBrushes(&header->lumps[Q2LUMP_BRUSHES]);
4049         Mod_Q2BSP_LoadBrushSides(&header->lumps[Q2LUMP_BRUSHSIDES]);
4050         Mod_Q2BSP_LoadAreas(&header->lumps[Q2LUMP_AREAS]);
4051         Mod_Q2BSP_LoadAreaPortals(&header->lumps[Q2LUMP_AREAPORTALS]);
4052         // LordHavoc: must go last because this makes the submodels
4053         Mod_Q2BSP_LoadModels(&header->lumps[Q2LUMP_MODELS]);
4054 }
4055
4056 static int Mod_Q3BSP_SuperContentsFromNativeContents(model_t *model, int nativecontents);
4057 static int Mod_Q3BSP_NativeContentsFromSuperContents(model_t *model, int supercontents);
4058
4059 static void Mod_Q3BSP_LoadEntities(lump_t *l)
4060 {
4061         const char *data;
4062         char key[128], value[MAX_INPUTLINE];
4063         float v[3];
4064         loadmodel->brushq3.num_lightgrid_cellsize[0] = 64;
4065         loadmodel->brushq3.num_lightgrid_cellsize[1] = 64;
4066         loadmodel->brushq3.num_lightgrid_cellsize[2] = 128;
4067         if (!l->filelen)
4068                 return;
4069         loadmodel->brush.entities = (char *)Mem_Alloc(loadmodel->mempool, l->filelen);
4070         memcpy(loadmodel->brush.entities, mod_base + l->fileofs, l->filelen);
4071         data = loadmodel->brush.entities;
4072         // some Q3 maps override the lightgrid_cellsize with a worldspawn key
4073         if (data && COM_ParseToken_Simple(&data, false) && com_token[0] == '{')
4074         {
4075                 while (1)
4076                 {
4077                         if (!COM_ParseToken_Simple(&data, false))
4078                                 break; // error
4079                         if (com_token[0] == '}')
4080                                 break; // end of worldspawn
4081                         if (com_token[0] == '_')
4082                                 strlcpy(key, com_token + 1, sizeof(key));
4083                         else
4084                                 strlcpy(key, com_token, sizeof(key));
4085                         while (key[strlen(key)-1] == ' ') // remove trailing spaces
4086                                 key[strlen(key)-1] = 0;
4087                         if (!COM_ParseToken_Simple(&data, false))
4088                                 break; // error
4089                         strlcpy(value, com_token, sizeof(value));
4090                         if (!strcmp("gridsize", key))
4091                         {
4092                                 if (sscanf(value, "%f %f %f", &v[0], &v[1], &v[2]) == 3 && v[0] != 0 && v[1] != 0 && v[2] != 0)
4093                                         VectorCopy(v, loadmodel->brushq3.num_lightgrid_cellsize);
4094                         }
4095                 }
4096         }
4097 }
4098
4099 // FIXME: make MAXSHADERS dynamic
4100 #define Q3SHADER_MAXSHADERS 4096
4101 #define Q3SHADER_MAXLAYERS 8
4102
4103 typedef struct q3shaderinfo_layer_s
4104 {
4105         int alphatest;
4106         int clampmap;
4107         float framerate;
4108         int numframes;
4109         char texturename[TEXTURE_MAXFRAMES][Q3PATHLENGTH];
4110         int blendfunc[2];
4111         qboolean rgbgenvertex;
4112         qboolean alphagenvertex;
4113 }
4114 q3shaderinfo_layer_t;
4115
4116 typedef struct q3shaderinfo_s
4117 {
4118         char name[Q3PATHLENGTH];
4119         int surfaceparms;
4120         int textureflags;
4121         int numlayers;
4122         qboolean lighting;
4123         qboolean vertexalpha;
4124         qboolean textureblendalpha;
4125         q3shaderinfo_layer_t *primarylayer, *backgroundlayer;
4126         q3shaderinfo_layer_t layers[Q3SHADER_MAXLAYERS];
4127         char skyboxname[Q3PATHLENGTH];
4128 }
4129 q3shaderinfo_t;
4130
4131 int q3shaders_numshaders;
4132 q3shaderinfo_t q3shaders_shaders[Q3SHADER_MAXSHADERS];
4133
4134 static void Mod_Q3BSP_LoadShaders(void)
4135 {
4136         int j;
4137         int fileindex;
4138         fssearch_t *search;
4139         char *f;
4140         const char *text;
4141         q3shaderinfo_t *shader;
4142         q3shaderinfo_layer_t *layer;
4143         int numparameters;
4144         char parameter[TEXTURE_MAXFRAMES + 4][Q3PATHLENGTH];
4145         search = FS_Search("scripts/*.shader", true, false);
4146         if (!search)
4147                 return;
4148         q3shaders_numshaders = 0;
4149         for (fileindex = 0;fileindex < search->numfilenames;fileindex++)
4150         {
4151                 text = f = (char *)FS_LoadFile(search->filenames[fileindex], tempmempool, false, NULL);
4152                 if (!f)
4153                         continue;
4154                 while (COM_ParseToken_QuakeC(&text, false))
4155                 {
4156                         if (q3shaders_numshaders >= Q3SHADER_MAXSHADERS)
4157                         {
4158                                 Con_Printf("Mod_Q3BSP_LoadShaders: too many shaders!\n");
4159                                 break;
4160                         }
4161                         shader = q3shaders_shaders + q3shaders_numshaders++;
4162                         memset(shader, 0, sizeof(*shader));
4163                         strlcpy(shader->name, com_token, sizeof(shader->name));
4164                         if (!COM_ParseToken_QuakeC(&text, false) || strcasecmp(com_token, "{"))
4165                         {
4166                                 Con_Printf("%s parsing error - expected \"{\", found \"%s\"\n", search->filenames[fileindex], com_token);
4167                                 break;
4168                         }
4169                         while (COM_ParseToken_QuakeC(&text, false))
4170                         {
4171                                 if (!strcasecmp(com_token, "}"))
4172                                         break;
4173                                 if (!strcasecmp(com_token, "{"))
4174                                 {
4175                                         if (shader->numlayers < Q3SHADER_MAXLAYERS)
4176                                         {
4177                                                 layer = shader->layers + shader->numlayers++;
4178                                                 layer->rgbgenvertex = false;
4179                                                 layer->alphagenvertex = false;
4180                                                 layer->blendfunc[0] = GL_ONE;
4181                                                 layer->blendfunc[1] = GL_ZERO;
4182                                         }
4183                                         else
4184                                                 layer = NULL;
4185                                         while (COM_ParseToken_QuakeC(&text, false))
4186                                         {
4187                                                 if (!strcasecmp(com_token, "}"))
4188                                                         break;
4189                                                 if (!strcasecmp(com_token, "\n"))
4190                                                         continue;
4191                                                 if (layer == NULL)
4192                                                         continue;
4193                                                 numparameters = 0;
4194                                                 for (j = 0;strcasecmp(com_token, "\n") && strcasecmp(com_token, "}");j++)
4195                                                 {
4196                                                         if (j < TEXTURE_MAXFRAMES + 4)
4197                                                         {
4198                                                                 strlcpy(parameter[j], com_token, sizeof(parameter[j]));
4199                                                                 numparameters = j + 1;
4200                                                         }
4201                                                         if (!COM_ParseToken_QuakeC(&text, true))
4202                                                                 break;
4203                                                 }
4204                                                 if (developer.integer >= 100)
4205                                                 {
4206                                                         Con_Printf("%s %i: ", shader->name, shader->numlayers - 1);
4207                                                         for (j = 0;j < numparameters;j++)
4208                                                                 Con_Printf(" %s", parameter[j]);
4209                                                         Con_Print("\n");
4210                                                 }
4211                                                 if (numparameters >= 2 && !strcasecmp(parameter[0], "blendfunc"))
4212                                                 {
4213                                                         if (numparameters == 2)
4214                                                         {
4215                                                                 if (!strcasecmp(parameter[1], "add"))
4216                                                                 {
4217                                                                         layer->blendfunc[0] = GL_ONE;
4218                                                                         layer->blendfunc[1] = GL_ONE;
4219                                                                 }
4220                                                                 else if (!strcasecmp(parameter[1], "filter"))
4221                                                                 {
4222                                                                         layer->blendfunc[0] = GL_DST_COLOR;
4223                                                                         layer->blendfunc[1] = GL_ZERO;
4224                                                                 }
4225                                                                 else if (!strcasecmp(parameter[1], "blend"))
4226                                                                 {
4227                                                                         layer->blendfunc[0] = GL_SRC_ALPHA;
4228                                                                         layer->blendfunc[1] = GL_ONE_MINUS_SRC_ALPHA;
4229                                                                 }
4230                                                         }
4231                                                         else if (numparameters == 3)
4232                                                         {
4233                                                                 int k;
4234                                                                 for (k = 0;k < 2;k++)
4235                                                                 {
4236                                                                         if (!strcasecmp(parameter[k+1], "GL_ONE"))
4237                                                                                 layer->blendfunc[k] = GL_ONE;
4238                                                                         else if (!strcasecmp(parameter[k+1], "GL_ZERO"))
4239                                                                                 layer->blendfunc[k] = GL_ZERO;
4240                                                                         else if (!strcasecmp(parameter[k+1], "GL_SRC_COLOR"))
4241                                                                                 layer->blendfunc[k] = GL_SRC_COLOR;
4242                                                                         else if (!strcasecmp(parameter[k+1], "GL_SRC_ALPHA"))
4243                                                                                 layer->blendfunc[k] = GL_SRC_ALPHA;
4244                                                                         else if (!strcasecmp(parameter[k+1], "GL_DST_COLOR"))
4245                                                                                 layer->blendfunc[k] = GL_DST_COLOR;
4246                                                                         else if (!strcasecmp(parameter[k+1], "GL_DST_ALPHA"))
4247                                                                                 layer->blendfunc[k] = GL_ONE_MINUS_DST_ALPHA;
4248                                                                         else if (!strcasecmp(parameter[k+1], "GL_ONE_MINUS_SRC_COLOR"))
4249                                                                                 layer->blendfunc[k] = GL_ONE_MINUS_SRC_COLOR;
4250                                                                         else if (!strcasecmp(parameter[k+1], "GL_ONE_MINUS_SRC_ALPHA"))
4251                                                                                 layer->blendfunc[k] = GL_ONE_MINUS_SRC_ALPHA;
4252                                                                         else if (!strcasecmp(parameter[k+1], "GL_ONE_MINUS_DST_COLOR"))
4253                                                                                 layer->blendfunc[k] = GL_ONE_MINUS_DST_COLOR;
4254                                                                         else if (!strcasecmp(parameter[k+1], "GL_ONE_MINUS_DST_ALPHA"))
4255                                                                                 layer->blendfunc[k] = GL_ONE_MINUS_DST_ALPHA;
4256                                                                         else
4257                                                                                 layer->blendfunc[k] = GL_ONE; // default in case of parsing error
4258                                                                 }
4259                                                         }
4260                                                 }
4261                                                 if (numparameters >= 2 && !strcasecmp(parameter[0], "alphafunc"))
4262                                                         layer->alphatest = true;
4263                                                 if (numparameters >= 2 && (!strcasecmp(parameter[0], "map") || !strcasecmp(parameter[0], "clampmap")))
4264                                                 {
4265                                                         if (!strcasecmp(parameter[0], "clampmap"))
4266                                                                 layer->clampmap = true;
4267                                                         layer->numframes = 1;
4268                                                         layer->framerate = 1;
4269                                                         strlcpy(layer->texturename[0], parameter[1], sizeof(layer->texturename));
4270                                                         if (!strcasecmp(parameter[1], "$lightmap"))
4271                                                                 shader->lighting = true;
4272                                                 }
4273                                                 else if (numparameters >= 3 && (!strcasecmp(parameter[0], "animmap") || !strcasecmp(parameter[0], "animclampmap")))
4274                                                 {
4275                                                         int i;
4276                                                         layer->numframes = min(numparameters - 2, TEXTURE_MAXFRAMES);
4277                                                         layer->framerate = atof(parameter[1]);
4278                                                         for (i = 0;i < layer->numframes;i++)
4279                                                                 strlcpy(layer->texturename[i], parameter[i + 2], sizeof(layer->texturename));
4280                                                 }
4281                                                 else if (numparameters >= 2 && !strcasecmp(parameter[0], "rgbgen") && !strcasecmp(parameter[1], "vertex"))
4282                                                         layer->rgbgenvertex = true;
4283                                                 else if (numparameters >= 2 && !strcasecmp(parameter[0], "alphagen") && !strcasecmp(parameter[1], "vertex"))
4284                                                         layer->alphagenvertex = true;
4285                                                 // break out a level if it was }
4286                                                 if (!strcasecmp(com_token, "}"))
4287                                                         break;
4288                                         }
4289                                         if (layer->rgbgenvertex)
4290                                                 shader->lighting = true;
4291                                         if (layer->alphagenvertex)
4292                                         {
4293                                                 if (layer == shader->layers + 0)
4294                                                 {
4295                                                         // vertex controlled transparency
4296                                                         shader->vertexalpha = true;
4297                                                 }
4298                                                 else
4299                                                 {
4300                                                         // multilayer terrain shader or similar
4301                                                         shader->textureblendalpha = true;
4302                                                 }
4303                                         }
4304                                         continue;
4305                                 }
4306                                 numparameters = 0;
4307                                 for (j = 0;strcasecmp(com_token, "\n") && strcasecmp(com_token, "}");j++)
4308                                 {
4309                                         if (j < TEXTURE_MAXFRAMES + 4)
4310                                         {
4311                                                 strlcpy(parameter[j], com_token, sizeof(parameter[j]));
4312                                                 numparameters = j + 1;
4313                                         }
4314                                         if (!COM_ParseToken_QuakeC(&text, true))
4315                                                 break;
4316                                 }
4317                                 if (fileindex == 0 && !strcasecmp(com_token, "}"))
4318                                         break;
4319                                 if (developer.integer >= 100)
4320                                 {
4321                                         Con_Printf("%s: ", shader->name);
4322                                         for (j = 0;j < numparameters;j++)
4323                                                 Con_Printf(" %s", parameter[j]);
4324                                         Con_Print("\n");
4325                                 }
4326                                 if (numparameters < 1)
4327                                         continue;
4328                                 if (!strcasecmp(parameter[0], "surfaceparm") && numparameters >= 2)
4329                                 {
4330                                         if (!strcasecmp(parameter[1], "alphashadow"))
4331                                                 shader->surfaceparms |= Q3SURFACEPARM_ALPHASHADOW;
4332                                         else if (!strcasecmp(parameter[1], "areaportal"))
4333                                                 shader->surfaceparms |= Q3SURFACEPARM_AREAPORTAL;
4334                                         else if (!strcasecmp(parameter[1], "botclip"))
4335                                                 shader->surfaceparms |= Q3SURFACEPARM_BOTCLIP;
4336                                         else if (!strcasecmp(parameter[1], "clusterportal"))
4337                                                 shader->surfaceparms |= Q3SURFACEPARM_CLUSTERPORTAL;
4338                                         else if (!strcasecmp(parameter[1], "detail"))
4339                                                 shader->surfaceparms |= Q3SURFACEPARM_DETAIL;
4340                                         else if (!strcasecmp(parameter[1], "donotenter"))
4341                                                 shader->surfaceparms |= Q3SURFACEPARM_DONOTENTER;
4342                                         else if (!strcasecmp(parameter[1], "dust"))
4343                                                 shader->surfaceparms |= Q3SURFACEPARM_DUST;
4344                                         else if (!strcasecmp(parameter[1], "hint"))
4345                                                 shader->surfaceparms |= Q3SURFACEPARM_HINT;
4346                                         else if (!strcasecmp(parameter[1], "fog"))
4347                                                 shader->surfaceparms |= Q3SURFACEPARM_FOG;
4348                                         else if (!strcasecmp(parameter[1], "lava"))
4349                                                 shader->surfaceparms |= Q3SURFACEPARM_LAVA;
4350                                         else if (!strcasecmp(parameter[1], "lightfilter"))
4351                                                 shader->surfaceparms |= Q3SURFACEPARM_LIGHTFILTER;
4352                                         else if (!strcasecmp(parameter[1], "lightgrid"))
4353                                                 shader->surfaceparms |= Q3SURFACEPARM_LIGHTGRID;
4354                                         else if (!strcasecmp(parameter[1], "metalsteps"))
4355                                                 shader->surfaceparms |= Q3SURFACEPARM_METALSTEPS;
4356                                         else if (!strcasecmp(parameter[1], "nodamage"))
4357                                                 shader->surfaceparms |= Q3SURFACEPARM_NODAMAGE;
4358                                         else if (!strcasecmp(parameter[1], "nodlight"))
4359                                                 shader->surfaceparms |= Q3SURFACEPARM_NODLIGHT;
4360                                         else if (!strcasecmp(parameter[1], "nodraw"))
4361                                                 shader->surfaceparms |= Q3SURFACEPARM_NODRAW;
4362                                         else if (!strcasecmp(parameter[1], "nodrop"))
4363                                                 shader->surfaceparms |= Q3SURFACEPARM_NODROP;
4364                                         else if (!strcasecmp(parameter[1], "noimpact"))
4365                                                 shader->surfaceparms |= Q3SURFACEPARM_NOIMPACT;
4366                                         else if (!strcasecmp(parameter[1], "nolightmap"))
4367                                                 shader->surfaceparms |= Q3SURFACEPARM_NOLIGHTMAP;
4368                                         else if (!strcasecmp(parameter[1], "nomarks"))
4369                                                 shader->surfaceparms |= Q3SURFACEPARM_NOMARKS;
4370                                         else if (!strcasecmp(parameter[1], "nomipmaps"))
4371                                                 shader->surfaceparms |= Q3SURFACEPARM_NOMIPMAPS;
4372                                         else if (!strcasecmp(parameter[1], "nonsolid"))
4373                                                 shader->surfaceparms |= Q3SURFACEPARM_NONSOLID;
4374                                         else if (!strcasecmp(parameter[1], "origin"))
4375                                                 shader->surfaceparms |= Q3SURFACEPARM_ORIGIN;
4376                                         else if (!strcasecmp(parameter[1], "playerclip"))
4377                                                 shader->surfaceparms |= Q3SURFACEPARM_PLAYERCLIP;
4378                                         else if (!strcasecmp(parameter[1], "sky"))
4379                                                 shader->surfaceparms |= Q3SURFACEPARM_SKY;
4380                                         else if (!strcasecmp(parameter[1], "slick"))
4381                                                 shader->surfaceparms |= Q3SURFACEPARM_SLICK;
4382                                         else if (!strcasecmp(parameter[1], "slime"))
4383                                                 shader->surfaceparms |= Q3SURFACEPARM_SLIME;
4384                                         else if (!strcasecmp(parameter[1], "structural"))
4385                                                 shader->surfaceparms |= Q3SURFACEPARM_STRUCTURAL;
4386                                         else if (!strcasecmp(parameter[1], "trans"))
4387                                                 shader->surfaceparms |= Q3SURFACEPARM_TRANS;
4388                                         else if (!strcasecmp(parameter[1], "water"))
4389                                                 shader->surfaceparms |= Q3SURFACEPARM_WATER;
4390                                         else if (!strcasecmp(parameter[1], "pointlight"))
4391                                                 shader->surfaceparms |= Q3SURFACEPARM_POINTLIGHT;
4392                                         else if (!strcasecmp(parameter[1], "antiportal"))
4393                                                 shader->surfaceparms |= Q3SURFACEPARM_ANTIPORTAL;
4394                                         else
4395                                                 Con_DPrintf("%s parsing warning: unknown surfaceparm \"%s\"\n", search->filenames[fileindex], parameter[1]);
4396                                 }
4397                                 else if (!strcasecmp(parameter[0], "sky") && numparameters >= 2)
4398                                 {
4399                                         // some q3 skies don't have the sky parm set
4400                                         shader->surfaceparms |= Q3SURFACEPARM_SKY;
4401                                         strlcpy(shader->skyboxname, parameter[1], sizeof(shader->skyboxname));
4402                                 }
4403                                 else if (!strcasecmp(parameter[0], "skyparms") && numparameters >= 2)
4404                                 {
4405                                         // some q3 skies don't have the sky parm set
4406                                         shader->surfaceparms |= Q3SURFACEPARM_SKY;
4407                                         if (!atoi(parameter[1]) && strcasecmp(parameter[1], "-"))
4408                                                 strlcpy(shader->skyboxname, parameter[1], sizeof(shader->skyboxname));
4409                                 }
4410                                 else if (!strcasecmp(parameter[0], "cull") && numparameters >= 2)
4411                                 {
4412                                         if (!strcasecmp(parameter[1], "disable") || !strcasecmp(parameter[1], "none") || !strcasecmp(parameter[1], "twosided"))
4413                                                 shader->textureflags |= Q3TEXTUREFLAG_TWOSIDED;
4414                                 }
4415                                 else if (!strcasecmp(parameter[0], "nomipmaps"))
4416                                         shader->surfaceparms |= Q3SURFACEPARM_NOMIPMAPS;
4417                                 else if (!strcasecmp(parameter[0], "nopicmip"))
4418                                         shader->textureflags |= Q3TEXTUREFLAG_NOPICMIP;
4419                                 else if (!strcasecmp(parameter[0], "deformvertexes") && numparameters >= 2)
4420                                 {
4421                                         if (!strcasecmp(parameter[1], "autosprite") && numparameters == 2)
4422                                                 shader->textureflags |= Q3TEXTUREFLAG_AUTOSPRITE;
4423                                         if (!strcasecmp(parameter[1], "autosprite2") && numparameters == 2)
4424                                                 shader->textureflags |= Q3TEXTUREFLAG_AUTOSPRITE2;
4425                                 }
4426                         }
4427                         // identify if this is a blended terrain shader or similar
4428                         if (shader->numlayers)
4429                         {
4430                                 shader->backgroundlayer = NULL;
4431                                 shader->primarylayer = shader->layers + 0;
4432                                 if ((shader->layers[0].blendfunc[0] == GL_ONE       && shader->layers[0].blendfunc[1] == GL_ZERO                && !shader->layers[0].alphatest)
4433                                 && ((shader->layers[1].blendfunc[0] == GL_SRC_ALPHA && shader->layers[1].blendfunc[1] == GL_ONE_MINUS_SRC_ALPHA && !shader->layers[0].alphatest)
4434                                 ||  (shader->layers[1].blendfunc[0] == GL_ONE       && shader->layers[1].blendfunc[1] == GL_ZERO                &&  shader->layers[1].alphatest)))
4435                                 {
4436                                         // terrain blending or other effects
4437                                         shader->backgroundlayer = shader->layers + 0;
4438                                         shader->primarylayer = shader->layers + 1;
4439                                 }
4440                                 // now see if the lightmap came first, and if so choose the second texture instead
4441                                 if (!strcasecmp(shader->primarylayer->texturename[0], "$lightmap"))
4442                                 {
4443                                         shader->backgroundlayer = NULL;
4444                                         shader->primarylayer = shader->layers + 1;
4445                                 }
4446                         }
4447                 }
4448                 Mem_Free(f);
4449         }
4450 }
4451
4452 q3shaderinfo_t *Mod_Q3BSP_LookupShader(const char *name)
4453 {
4454         int i;
4455         for (i = 0;i < Q3SHADER_MAXSHADERS;i++)
4456                 if (!strcasecmp(q3shaders_shaders[i].name, name))
4457                         return q3shaders_shaders + i;
4458         return NULL;
4459 }
4460
4461 static void Mod_Q3BSP_LoadTextures(lump_t *l)
4462 {
4463         q3dtexture_t *in;
4464         texture_t *out;
4465         int i, count, c;
4466
4467         in = (q3dtexture_t *)(mod_base + l->fileofs);
4468         if (l->filelen % sizeof(*in))
4469                 Host_Error("Mod_Q3BSP_LoadTextures: funny lump size in %s",loadmodel->name);
4470         count = l->filelen / sizeof(*in);
4471         out = (texture_t *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
4472
4473         loadmodel->data_textures = out;
4474         loadmodel->num_textures = count;
4475         loadmodel->num_texturesperskin = loadmodel->num_textures;
4476
4477         for (i = 0;i < count;i++)
4478         {
4479                 strlcpy (out[i].name, in[i].name, sizeof (out[i].name));
4480                 out[i].surfaceflags = LittleLong(in[i].surfaceflags);
4481                 out[i].supercontents = Mod_Q3BSP_SuperContentsFromNativeContents(loadmodel, LittleLong(in[i].contents));
4482         }
4483
4484         if (cls.state == ca_dedicated)
4485                 return;
4486
4487         // parse the Q3 shader files
4488         Mod_Q3BSP_LoadShaders();
4489
4490         c = 0;
4491         for (i = 0;i < count;i++, in++, out++)
4492         {
4493                 q3shaderinfo_t *shader;
4494                 shader = Mod_Q3BSP_LookupShader(out->name);
4495                 if (shader)
4496                 {
4497                         out->surfaceparms = shader->surfaceparms;
4498                         out->textureflags = shader->textureflags;
4499                         out->basematerialflags = 0;
4500                         if (shader->surfaceparms & Q3SURFACEPARM_SKY)
4501                         {
4502                                 out->basematerialflags |= MATERIALFLAG_SKY | MATERIALFLAG_NOSHADOW;
4503                                 if (shader->skyboxname[0])
4504                                 {
4505                                         // quake3 seems to append a _ to the skybox name, so this must do so as well
4506                                         dpsnprintf(loadmodel->brush.skybox, sizeof(loadmodel->brush.skybox), "%s_", shader->skyboxname);
4507                                 }
4508                         }
4509                         else if ((out->surfaceflags & Q3SURFACEFLAG_NODRAW) || shader->numlayers == 0)
4510                                 out->basematerialflags |= MATERIALFLAG_NODRAW | MATERIALFLAG_NOSHADOW;
4511                         else if (shader->surfaceparms & Q3SURFACEPARM_LAVA)
4512                                 out->basematerialflags |= MATERIALFLAG_WATER | MATERIALFLAG_LIGHTBOTHSIDES | MATERIALFLAG_FULLBRIGHT | MATERIALFLAG_NOSHADOW;
4513                         else if (shader->surfaceparms & Q3SURFACEPARM_SLIME)
4514                                 out->basematerialflags |= MATERIALFLAG_WATER | MATERIALFLAG_LIGHTBOTHSIDES | MATERIALFLAG_WATERALPHA | MATERIALFLAG_NOSHADOW;
4515                         else if (shader->surfaceparms & Q3SURFACEPARM_WATER)
4516                                 out->basematerialflags |= MATERIALFLAG_WATER | MATERIALFLAG_LIGHTBOTHSIDES | MATERIALFLAG_WATERALPHA | MATERIALFLAG_NOSHADOW;
4517                         else
4518                                 out->basematerialflags |= MATERIALFLAG_WALL;
4519                         if (shader->layers[0].alphatest)
4520                                 out->basematerialflags |= MATERIALFLAG_ALPHATEST | MATERIALFLAG_NOSHADOW;
4521                         if (shader->textureflags & Q3TEXTUREFLAG_TWOSIDED)
4522                                 out->basematerialflags |= MATERIALFLAG_NOSHADOW | MATERIALFLAG_NOCULLFACE;
4523                         if (shader->textureflags & (Q3TEXTUREFLAG_AUTOSPRITE | Q3TEXTUREFLAG_AUTOSPRITE2))
4524                                 out->basematerialflags |= MATERIALFLAG_NOSHADOW;
4525                         out->customblendfunc[0] = GL_ONE;
4526                         out->customblendfunc[1] = GL_ZERO;
4527                         if (shader->numlayers > 0)
4528                         {
4529                                 out->customblendfunc[0] = shader->layers[0].blendfunc[0];
4530                                 out->customblendfunc[1] = shader->layers[0].blendfunc[1];
4531 /*
4532 Q3 shader blendfuncs actually used in the game (* = supported by DP)
4533 * additive               GL_ONE GL_ONE
4534   additive weird         GL_ONE GL_SRC_ALPHA
4535   additive weird 2       GL_ONE GL_ONE_MINUS_SRC_ALPHA
4536 * alpha                  GL_SRC_ALPHA GL_ONE_MINUS_SRC_ALPHA
4537   alpha inverse          GL_ONE_MINUS_SRC_ALPHA GL_SRC_ALPHA
4538   brighten               GL_DST_COLOR GL_ONE
4539   brighten               GL_ONE GL_SRC_COLOR
4540   brighten weird         GL_DST_COLOR GL_ONE_MINUS_DST_ALPHA
4541   brighten weird 2       GL_DST_COLOR GL_SRC_ALPHA
4542 * modulate               GL_DST_COLOR GL_ZERO
4543 * modulate               GL_ZERO GL_SRC_COLOR
4544   modulate inverse       GL_ZERO GL_ONE_MINUS_SRC_COLOR
4545   modulate inverse alpha GL_ZERO GL_SRC_ALPHA
4546   modulate weird inverse GL_ONE_MINUS_DST_COLOR GL_ZERO
4547 * modulate x2            GL_DST_COLOR GL_SRC_COLOR
4548 * no blend               GL_ONE GL_ZERO
4549   nothing                GL_ZERO GL_ONE
4550 */
4551                                 // if not opaque, figure out what blendfunc to use
4552                                 if (shader->layers[0].blendfunc[0] != GL_ONE || shader->layers[0].blendfunc[1] != GL_ZERO)
4553                                 {
4554                                         if (shader->layers[0].blendfunc[0] == GL_ONE && shader->layers[0].blendfunc[1] == GL_ONE)
4555                                                 out->basematerialflags |= MATERIALFLAG_ADD | MATERIALFLAG_BLENDED | MATERIALFLAG_NOSHADOW;
4556                                         else if (shader->layers[0].blendfunc[0] == GL_SRC_ALPHA && shader->layers[0].blendfunc[1] == GL_ONE)
4557                                                 out->basematerialflags |= MATERIALFLAG_ADD | MATERIALFLAG_BLENDED | MATERIALFLAG_NOSHADOW;
4558                                         else if (shader->layers[0].blendfunc[0] == GL_SRC_ALPHA && shader->layers[0].blendfunc[1] == GL_ONE_MINUS_SRC_ALPHA)
4559                                                 out->basematerialflags |= MATERIALFLAG_ALPHA | MATERIALFLAG_BLENDED | MATERIALFLAG_NOSHADOW;
4560                                         else
4561                                                 out->basematerialflags |= MATERIALFLAG_CUSTOMBLEND | MATERIALFLAG_FULLBRIGHT | MATERIALFLAG_BLENDED | MATERIALFLAG_NOSHADOW;
4562                                 }
4563                         }
4564                         if (!shader->lighting)
4565                                 out->basematerialflags |= MATERIALFLAG_FULLBRIGHT;
4566                         if (shader->primarylayer)
4567                         {
4568                                 int j;
4569                                 out->numskinframes = shader->primarylayer->numframes;
4570                                 out->skinframerate = shader->primarylayer->framerate;
4571                                 for (j = 0;j < shader->primarylayer->numframes;j++)
4572                                         if (!(out->skinframes[j] = R_SkinFrame_LoadExternal(shader->primarylayer->texturename[j], ((shader->surfaceparms & Q3SURFACEPARM_NOMIPMAPS) ? 0 : TEXF_MIPMAP) | TEXF_ALPHA | TEXF_PRECACHE | ((!r_picmipworld.integer || (shader->textureflags & Q3TEXTUREFLAG_NOPICMIP)) ? 0 : TEXF_PICMIP) | (shader->primarylayer->clampmap ? TEXF_CLAMP : 0), false)))
4573                                         {
4574                                                 Con_DPrintf("%s: could not load texture \"%s\" (frame %i) for shader \"%s\"\n", loadmodel->name, shader->primarylayer->texturename[j], j, out->name);
4575                                                 out->skinframes[j] = R_SkinFrame_LoadMissing();
4576                                         }
4577                         }
4578                         if (shader->backgroundlayer)
4579                         {
4580                                 int j;
4581                                 out->backgroundnumskinframes = shader->backgroundlayer->numframes;
4582                                 out->backgroundskinframerate = shader->backgroundlayer->framerate;
4583                                 for (j = 0;j < shader->backgroundlayer->numframes;j++)
4584                                 {
4585                                         if (!(out->backgroundskinframes[j] = R_SkinFrame_LoadExternal(shader->backgroundlayer->texturename[j], ((shader->surfaceparms & Q3SURFACEPARM_NOMIPMAPS) ? 0 : TEXF_MIPMAP) | TEXF_ALPHA | TEXF_PRECACHE | ((!r_picmipworld.integer || (shader->textureflags & Q3TEXTUREFLAG_NOPICMIP)) ? 0 : TEXF_PICMIP) | (shader->backgroundlayer->clampmap ? TEXF_CLAMP : 0), false)))
4586                                         {
4587                                                 Con_DPrintf("%s: could not load texture \"%s\" (frame %i) for shader \"%s\"\n", loadmodel->name, shader->backgroundlayer->texturename[j], j, out->name);
4588                                                 out->backgroundskinframes[j] = R_SkinFrame_LoadMissing();
4589                                         }
4590                                 }
4591                         }
4592                 }
4593                 else if (!strcmp(out->name, "noshader"))
4594                         out->surfaceparms = 0;
4595                 else
4596                 {
4597                         c++;
4598                         Con_DPrintf("%s: No shader found for texture \"%s\"\n", loadmodel->name, out->name);
4599                         out->surfaceparms = 0;
4600                         if (out->surfaceflags & Q3SURFACEFLAG_NODRAW)
4601                                 out->basematerialflags |= MATERIALFLAG_NODRAW | MATERIALFLAG_NOSHADOW;
4602                         else if (out->surfaceflags & Q3SURFACEFLAG_SKY)
4603                                 out->basematerialflags |= MATERIALFLAG_SKY | MATERIALFLAG_NOSHADOW;
4604                         else
4605                                 out->basematerialflags |= MATERIALFLAG_WALL;
4606                         // these are defaults
4607                         //if (!strncmp(out->name, "textures/skies/", 15))
4608                         //      out->surfaceparms |= Q3SURFACEPARM_SKY;
4609                         //if (!strcmp(out->name, "caulk") || !strcmp(out->name, "common/caulk") || !strcmp(out->name, "textures/common/caulk")
4610                         // || !strcmp(out->name, "nodraw") || !strcmp(out->name, "common/nodraw") || !strcmp(out->name, "textures/common/nodraw"))
4611                         //      out->surfaceparms |= Q3SURFACEPARM_NODRAW;
4612                         //if (R_TextureHasAlpha(out->skinframes[0].base))
4613                         //      out->surfaceparms |= Q3SURFACEPARM_TRANS;
4614                         out->numskinframes = 1;
4615                         if (!(out->skinframes[0] = R_SkinFrame_LoadExternal(out->name, TEXF_MIPMAP | TEXF_ALPHA | TEXF_PRECACHE | (r_picmipworld.integer ? TEXF_PICMIP : 0), false)))
4616                                 Con_DPrintf("%s: could not load texture for missing shader \"%s\"\n", loadmodel->name, out->name);
4617                 }
4618                 // init the animation variables
4619                 out->currentframe = out;
4620                 if (out->numskinframes < 1)
4621                         out->numskinframes = 1;
4622                 if (!out->skinframes[0])
4623                         out->skinframes[0] = R_SkinFrame_LoadMissing();
4624                 out->currentskinframe = out->skinframes[0];
4625                 out->backgroundcurrentskinframe = out->backgroundskinframes[0];
4626         }
4627         if (c)
4628                 Con_DPrintf("%s: %i textures missing shaders\n", loadmodel->name, c);
4629 }
4630
4631 static void Mod_Q3BSP_LoadPlanes(lump_t *l)
4632 {
4633         q3dplane_t *in;
4634         mplane_t *out;
4635         int i, count;
4636
4637         in = (q3dplane_t *)(mod_base + l->fileofs);
4638         if (l->filelen % sizeof(*in))
4639                 Host_Error("Mod_Q3BSP_LoadPlanes: funny lump size in %s",loadmodel->name);
4640         count = l->filelen / sizeof(*in);
4641         out = (mplane_t *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
4642
4643         loadmodel->brush.data_planes = out;
4644         loadmodel->brush.num_planes = count;
4645
4646         for (i = 0;i < count;i++, in++, out++)
4647         {
4648                 out->normal[0] = LittleFloat(in->normal[0]);
4649                 out->normal[1] = LittleFloat(in->normal[1]);
4650                 out->normal[2] = LittleFloat(in->normal[2]);
4651                 out->dist = LittleFloat(in->dist);
4652                 PlaneClassify(out);
4653         }
4654 }
4655
4656 static void Mod_Q3BSP_LoadBrushSides(lump_t *l)
4657 {
4658         q3dbrushside_t *in;
4659         q3mbrushside_t *out;
4660         int i, n, count;
4661
4662         in = (q3dbrushside_t *)(mod_base + l->fileofs);
4663         if (l->filelen % sizeof(*in))
4664                 Host_Error("Mod_Q3BSP_LoadBrushSides: funny lump size in %s",loadmodel->name);
4665         count = l->filelen / sizeof(*in);
4666         out = (q3mbrushside_t *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
4667
4668         loadmodel->brush.data_brushsides = out;
4669         loadmodel->brush.num_brushsides = count;
4670
4671         for (i = 0;i < count;i++, in++, out++)
4672         {
4673                 n = LittleLong(in->planeindex);
4674                 if (n < 0 || n >= loadmodel->brush.num_planes)
4675                         Host_Error("Mod_Q3BSP_LoadBrushSides: invalid planeindex %i (%i planes)", n, loadmodel->brush.num_planes);
4676                 out->plane = loadmodel->brush.data_planes + n;
4677                 n = LittleLong(in->textureindex);
4678                 if (n < 0 || n >= loadmodel->num_textures)
4679                         Host_Error("Mod_Q3BSP_LoadBrushSides: invalid textureindex %i (%i textures)", n, loadmodel->num_textures);
4680                 out->texture = loadmodel->data_textures + n;
4681         }
4682 }
4683
4684 static void Mod_Q3BSP_LoadBrushes(lump_t *l)
4685 {
4686         q3dbrush_t *in;
4687         q3mbrush_t *out;
4688         int i, j, n, c, count, maxplanes;
4689         colplanef_t *planes;
4690
4691         in = (q3dbrush_t *)(mod_base + l->fileofs);
4692         if (l->filelen % sizeof(*in))
4693                 Host_Error("Mod_Q3BSP_LoadBrushes: funny lump size in %s",loadmodel->name);
4694         count = l->filelen / sizeof(*in);
4695         out = (q3mbrush_t *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
4696
4697         loadmodel->brush.data_brushes = out;
4698         loadmodel->brush.num_brushes = count;
4699
4700         maxplanes = 0;
4701         planes = NULL;
4702
4703         for (i = 0;i < count;i++, in++, out++)
4704         {
4705                 n = LittleLong(in->firstbrushside);
4706                 c = LittleLong(in->numbrushsides);
4707                 if (n < 0 || n + c > loadmodel->brush.num_brushsides)
4708                         Host_Error("Mod_Q3BSP_LoadBrushes: invalid brushside range %i : %i (%i brushsides)", n, n + c, loadmodel->brush.num_brushsides);
4709                 out->firstbrushside = loadmodel->brush.data_brushsides + n;
4710                 out->numbrushsides = c;
4711                 n = LittleLong(in->textureindex);
4712                 if (n < 0 || n >= loadmodel->num_textures)
4713                         Host_Error("Mod_Q3BSP_LoadBrushes: invalid textureindex %i (%i textures)", n, loadmodel->num_textures);
4714                 out->texture = loadmodel->data_textures + n;
4715
4716                 // make a list of mplane_t structs to construct a colbrush from
4717                 if (maxplanes < out->numbrushsides)
4718                 {
4719                         maxplanes = out->numbrushsides;
4720                         if (planes)
4721                                 Mem_Free(planes);
4722                         planes = (colplanef_t *)Mem_Alloc(tempmempool, sizeof(colplanef_t) * maxplanes);
4723                 }
4724                 for (j = 0;j < out->numbrushsides;j++)
4725                 {
4726                         VectorCopy(out->firstbrushside[j].plane->normal, planes[j].normal);
4727                         planes[j].dist = out->firstbrushside[j].plane->dist;
4728                         planes[j].q3surfaceflags = out->firstbrushside[j].texture->surfaceflags;
4729                         planes[j].texture = out->firstbrushside[j].texture;
4730                 }
4731                 // make the colbrush from the planes
4732                 out->colbrushf = Collision_NewBrushFromPlanes(loadmodel->mempool, out->numbrushsides, planes, out->texture->supercontents);
4733         }
4734         if (planes)
4735                 Mem_Free(planes);
4736 }
4737
4738 static void Mod_Q3BSP_LoadEffects(lump_t *l)
4739 {
4740         q3deffect_t *in;
4741         q3deffect_t *out;
4742         int i, n, count;
4743
4744         in = (q3deffect_t *)(mod_base + l->fileofs);
4745         if (l->filelen % sizeof(*in))
4746                 Host_Error("Mod_Q3BSP_LoadEffects: funny lump size in %s",loadmodel->name);
4747         count = l->filelen / sizeof(*in);
4748         out = (q3deffect_t *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
4749
4750         loadmodel->brushq3.data_effects = out;
4751         loadmodel->brushq3.num_effects = count;
4752
4753         for (i = 0;i < count;i++, in++, out++)
4754         {
4755                 strlcpy (out->shadername, in->shadername, sizeof (out->shadername));
4756                 n = LittleLong(in->brushindex);
4757                 if (n >= loadmodel->brush.num_brushes)
4758                 {
4759                         Con_Printf("Mod_Q3BSP_LoadEffects: invalid brushindex %i (%i brushes), setting to -1\n", n, loadmodel->brush.num_brushes);
4760                         n = -1;
4761                 }
4762                 out->brushindex = n;
4763                 out->unknown = LittleLong(in->unknown);
4764         }
4765 }
4766
4767 static void Mod_Q3BSP_LoadVertices(lump_t *l)
4768 {
4769         q3dvertex_t *in;
4770         int i, count;
4771
4772         in = (q3dvertex_t *)(mod_base + l->fileofs);
4773         if (l->filelen % sizeof(*in))
4774                 Host_Error("Mod_Q3BSP_LoadVertices: funny lump size in %s",loadmodel->name);
4775         loadmodel->brushq3.num_vertices = count = l->filelen / sizeof(*in);
4776         loadmodel->brushq3.data_vertex3f = (float *)Mem_Alloc(loadmodel->mempool, count * (sizeof(float) * (3 + 3 + 2 + 2 + 4)));
4777         loadmodel->brushq3.data_normal3f = loadmodel->brushq3.data_vertex3f + count * 3;
4778         loadmodel->brushq3.data_texcoordtexture2f = loadmodel->brushq3.data_normal3f + count * 3;
4779         loadmodel->brushq3.data_texcoordlightmap2f = loadmodel->brushq3.data_texcoordtexture2f + count * 2;
4780         loadmodel->brushq3.data_color4f = loadmodel->brushq3.data_texcoordlightmap2f + count * 2;
4781
4782         for (i = 0;i < count;i++, in++)
4783         {
4784                 loadmodel->brushq3.data_vertex3f[i * 3 + 0] = LittleFloat(in->origin3f[0]);
4785                 loadmodel->brushq3.data_vertex3f[i * 3 + 1] = LittleFloat(in->origin3f[1]);
4786                 loadmodel->brushq3.data_vertex3f[i * 3 + 2] = LittleFloat(in->origin3f[2]);
4787                 loadmodel->brushq3.data_normal3f[i * 3 + 0] = LittleFloat(in->normal3f[0]);
4788                 loadmodel->brushq3.data_normal3f[i * 3 + 1] = LittleFloat(in->normal3f[1]);
4789                 loadmodel->brushq3.data_normal3f[i * 3 + 2] = LittleFloat(in->normal3f[2]);
4790                 loadmodel->brushq3.data_texcoordtexture2f[i * 2 + 0] = LittleFloat(in->texcoord2f[0]);
4791                 loadmodel->brushq3.data_texcoordtexture2f[i * 2 + 1] = LittleFloat(in->texcoord2f[1]);
4792                 loadmodel->brushq3.data_texcoordlightmap2f[i * 2 + 0] = LittleFloat(in->lightmap2f[0]);
4793                 loadmodel->brushq3.data_texcoordlightmap2f[i * 2 + 1] = LittleFloat(in->lightmap2f[1]);
4794                 // svector/tvector are calculated later in face loading
4795                 loadmodel->brushq3.data_color4f[i * 4 + 0] = in->color4ub[0] * (1.0f / 255.0f);
4796                 loadmodel->brushq3.data_color4f[i * 4 + 1] = in->color4ub[1] * (1.0f / 255.0f);
4797                 loadmodel->brushq3.data_color4f[i * 4 + 2] = in->color4ub[2] * (1.0f / 255.0f);
4798                 loadmodel->brushq3.data_color4f[i * 4 + 3] = in->color4ub[3] * (1.0f / 255.0f);
4799         }
4800 }
4801
4802 static void Mod_Q3BSP_LoadTriangles(lump_t *l)
4803 {
4804         int *in;
4805         int *out;
4806         int i, count;
4807
4808         in = (int *)(mod_base + l->fileofs);
4809         if (l->filelen % sizeof(int[3]))
4810                 Host_Error("Mod_Q3BSP_LoadTriangles: funny lump size in %s",loadmodel->name);
4811         count = l->filelen / sizeof(*in);
4812         out = (int *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
4813
4814         loadmodel->brushq3.num_triangles = count / 3;
4815         loadmodel->brushq3.data_element3i = out;
4816
4817         for (i = 0;i < count;i++, in++, out++)
4818         {
4819                 *out = LittleLong(*in);
4820                 if (*out < 0 || *out >= loadmodel->brushq3.num_vertices)
4821                 {
4822                         Con_Printf("Mod_Q3BSP_LoadTriangles: invalid vertexindex %i (%i vertices), setting to 0\n", *out, loadmodel->brushq3.num_vertices);
4823                         *out = 0;
4824                 }
4825         }
4826 }
4827
4828 static void Mod_Q3BSP_LoadLightmaps(lump_t *l, lump_t *faceslump)
4829 {
4830         q3dlightmap_t *in;
4831         int i, j, count, power, power2, mask, endlightmap, mergewidth, mergeheight;
4832         unsigned char *c;
4833
4834         if (!l->filelen)
4835                 return;
4836         if (cls.state == ca_dedicated)
4837                 return;
4838         in = (q3dlightmap_t *)(mod_base + l->fileofs);
4839         if (l->filelen % sizeof(*in))
4840                 Host_Error("Mod_Q3BSP_LoadLightmaps: funny lump size in %s",loadmodel->name);
4841         count = l->filelen / sizeof(*in);
4842         loadmodel->brushq3.num_originallightmaps = count;
4843
4844         // now check the surfaces to see if any of them index an odd numbered
4845         // lightmap, if so this is not a deluxemapped bsp file
4846         //
4847         // also check what lightmaps are actually used, because q3map2 sometimes
4848         // (always?) makes an unused one at the end, which
4849         // q3map2 sometimes (or always?) makes a second blank lightmap for no
4850         // reason when only one lightmap is used, which can throw off the
4851         // deluxemapping detection method, so check 2-lightmap bsp's specifically
4852         // to see if the second lightmap is blank, if so it is not deluxemapped.
4853         loadmodel->brushq3.deluxemapping = !(count & 1);
4854         loadmodel->brushq3.deluxemapping_modelspace = true;
4855         endlightmap = 0;
4856         if (loadmodel->brushq3.deluxemapping)
4857         {
4858                 int facecount = faceslump->filelen / sizeof(q3dface_t);
4859                 q3dface_t *faces = (q3dface_t *)(mod_base + faceslump->fileofs);
4860                 for (i = 0;i < facecount;i++)
4861                 {
4862                         j = LittleLong(faces[i].lightmapindex);
4863                         if (j >= 0)
4864                         {
4865                                 endlightmap = max(endlightmap, j + 1);
4866                                 if ((j & 1) || j + 1 >= count)
4867                                 {
4868                                         loadmodel->brushq3.deluxemapping = false;
4869                                         break;
4870                                 }
4871                         }
4872                 }
4873         }
4874         if (endlightmap < 2)
4875                 loadmodel->brushq3.deluxemapping = false;
4876
4877         // q3map2 sometimes (or always?) makes a second blank lightmap for no
4878         // reason when only one lightmap is used, which can throw off the
4879         // deluxemapping detection method, so check 2-lightmap bsp's specifically
4880         // to see if the second lightmap is blank, if so it is not deluxemapped.
4881         if (endlightmap == 1 && count == 2)
4882         {
4883                 c = in[1].rgb;
4884                 for (i = 0;i < 128*128*3;i++)
4885                         if (c[i])
4886                                 break;
4887                 if (i == 128*128*3)
4888                 {
4889                         // all pixels in the unused lightmap were black...
4890                         loadmodel->brushq3.deluxemapping = false;
4891                 }
4892         }
4893
4894         Con_DPrintf("%s is %sdeluxemapped\n", loadmodel->name, loadmodel->brushq3.deluxemapping ? "" : "not ");
4895
4896         // figure out what the most reasonable merge power is within limits
4897         loadmodel->brushq3.num_lightmapmergepower = 0;
4898         for (power = 1;power <= mod_q3bsp_lightmapmergepower.integer && (128 << power) <= gl_max_texture_size && (1 << (power * 2)) < 4 * (count >> loadmodel->brushq3.deluxemapping);power++)
4899                 loadmodel->brushq3.num_lightmapmergepower = power;
4900         loadmodel->brushq3.num_lightmapmerge = 1 << loadmodel->brushq3.num_lightmapmergepower;
4901
4902         loadmodel->brushq3.num_mergedlightmaps = ((count >> loadmodel->brushq3.deluxemapping) + (1 << (loadmodel->brushq3.num_lightmapmergepower * 2)) - 1) >> (loadmodel->brushq3.num_lightmapmergepower * 2);
4903         loadmodel->brushq3.data_lightmaps = (rtexture_t **)Mem_Alloc(loadmodel->mempool, loadmodel->brushq3.num_mergedlightmaps * sizeof(rtexture_t *));
4904         if (loadmodel->brushq3.deluxemapping)
4905                 loadmodel->brushq3.data_deluxemaps = (rtexture_t **)Mem_Alloc(loadmodel->mempool, loadmodel->brushq3.num_mergedlightmaps * sizeof(rtexture_t *));
4906
4907         // allocate a texture pool if we need it
4908         if (loadmodel->texturepool == NULL && cls.state != ca_dedicated)
4909                 loadmodel->texturepool = R_AllocTexturePool();
4910
4911         if (loadmodel->brushq3.num_lightmapmergepower > 0)
4912         {
4913                 power = loadmodel->brushq3.num_lightmapmergepower;
4914                 power2 = power * 2;
4915                 mask = (1 << power) - 1;
4916                 for (i = 0;i < count;i++)
4917                 {
4918                         // figure out which merged lightmap texture this fits into
4919                         int lightmapindex = i >> (loadmodel->brushq3.deluxemapping + power2);
4920                         // if the lightmap has not been allocated yet, create it
4921                         if (!loadmodel->brushq3.data_lightmaps[lightmapindex])
4922                         {
4923                                 // create a lightmap only as large as necessary to hold the
4924                                 // remaining 128x128 blocks
4925                                 // if there are multiple merged lightmap textures then they will
4926                                 // all be full size except the last one which may be smaller
4927                                 // because it only needs to the remaining blocks, and it will often
4928                                 // be odd sizes like 2048x512 due to only being 25% full or so.
4929                                 j = (count >> loadmodel->brushq3.deluxemapping) - (lightmapindex << power2);
4930                                 for (mergewidth = 1;mergewidth < j && mergewidth < (1 << power);mergewidth *= 2)
4931                                         ;
4932                                 for (mergeheight = 1;mergewidth*mergeheight < j && mergeheight < (1 << power);mergeheight *= 2)
4933                                         ;
4934                                 Con_DPrintf("lightmap merge texture #%i is %ix%i (%i of %i used)\n", lightmapindex, mergewidth*128, mergeheight*128, min(j, mergewidth*mergeheight), mergewidth*mergeheight);
4935                                 loadmodel->brushq3.data_lightmaps[lightmapindex] = R_LoadTexture2D(loadmodel->texturepool, va("lightmap%04i", lightmapindex), mergewidth * 128, mergeheight * 128, NULL, TEXTYPE_RGB, TEXF_FORCELINEAR | TEXF_PRECACHE, NULL);
4936                                 if (loadmodel->brushq3.data_deluxemaps)
4937                                         loadmodel->brushq3.data_deluxemaps[lightmapindex] = R_LoadTexture2D(loadmodel->texturepool, va("deluxemap%04i", lightmapindex), mergewidth * 128, mergeheight * 128, NULL, TEXTYPE_RGB, TEXF_FORCELINEAR | TEXF_PRECACHE, NULL);
4938                         }
4939                         mergewidth = R_TextureWidth(loadmodel->brushq3.data_lightmaps[lightmapindex]) / 128;
4940                         mergeheight = R_TextureHeight(loadmodel->brushq3.data_lightmaps[lightmapindex]) / 128;
4941                         j = (i >> loadmodel->brushq3.deluxemapping) & ((1 << power2) - 1);
4942                         if (loadmodel->brushq3.deluxemapping && (i & 1))
4943                                 R_UpdateTexture(loadmodel->brushq3.data_deluxemaps[lightmapindex], in[i].rgb, (j % mergewidth) * 128, (j / mergewidth) * 128, 128, 128);
4944                         else
4945                                 R_UpdateTexture(loadmodel->brushq3.data_lightmaps     [lightmapindex], in[i].rgb, (j % mergewidth) * 128, (j / mergewidth) * 128, 128, 128);
4946                 }
4947         }
4948         else
4949         {
4950                 for (i = 0;i < count;i++)
4951                 {
4952                         // figure out which merged lightmap texture this fits into
4953                         int lightmapindex = i >> loadmodel->brushq3.deluxemapping;
4954                         if (loadmodel->brushq3.deluxemapping && (i & 1))
4955                                 loadmodel->brushq3.data_deluxemaps[lightmapindex] = R_LoadTexture2D(loadmodel->texturepool, va("deluxemap%04i", lightmapindex), 128, 128, in[i].rgb, TEXTYPE_RGB, TEXF_FORCELINEAR | TEXF_PRECACHE, NULL);
4956                         else
4957                                 loadmodel->brushq3.data_lightmaps[lightmapindex] = R_LoadTexture2D(loadmodel->texturepool, va("lightmap%04i", lightmapindex), 128, 128, in[i].rgb, TEXTYPE_RGB, TEXF_FORCELINEAR | TEXF_PRECACHE, NULL);
4958                 }
4959         }
4960 }
4961
4962 static void Mod_Q3BSP_LoadFaces(lump_t *l)
4963 {
4964         q3dface_t *in, *oldin;
4965         msurface_t *out, *oldout;
4966         int i, oldi, j, n, count, invalidelements, patchsize[2], finalwidth, finalheight, xtess, ytess, finalvertices, finaltriangles, firstvertex, firstelement, type, oldnumtriangles, oldnumtriangles2, meshvertices, meshtriangles, numvertices, numtriangles;
4967         float lightmaptcbase[2], lightmaptcscale[2];
4968         //int *originalelement3i;
4969         //int *originalneighbor3i;
4970         float *originalvertex3f;
4971         //float *originalsvector3f;
4972         //float *originaltvector3f;
4973         float *originalnormal3f;
4974         float *originalcolor4f;
4975         float *originaltexcoordtexture2f;
4976         float *originaltexcoordlightmap2f;
4977         float *v;
4978
4979         in = (q3dface_t *)(mod_base + l->fileofs);
4980         if (l->filelen % sizeof(*in))
4981                 Host_Error("Mod_Q3BSP_LoadFaces: funny lump size in %s",loadmodel->name);
4982         count = l->filelen / sizeof(*in);
4983         out = (msurface_t *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
4984
4985         loadmodel->data_surfaces = out;
4986         loadmodel->num_surfaces = count;
4987
4988         i = 0;
4989         oldi = i;
4990         oldin = in;
4991         oldout = out;
4992         meshvertices = 0;
4993         meshtriangles = 0;
4994         for (;i < count;i++, in++, out++)
4995         {
4996                 // check face type first
4997                 type = LittleLong(in->type);
4998                 if (type != Q3FACETYPE_POLYGON
4999                  && type != Q3FACETYPE_PATCH
5000                  && type != Q3FACETYPE_MESH
5001                  && type != Q3FACETYPE_FLARE)
5002                 {
5003                         Con_DPrintf("Mod_Q3BSP_LoadFaces: face #%i: unknown face type %i\n", i, type);
5004                         continue;
5005                 }
5006
5007                 n = LittleLong(in->textureindex);
5008                 if (n < 0 || n >= loadmodel->num_textures)
5009                 {
5010                         Con_DPrintf("Mod_Q3BSP_LoadFaces: face #%i: invalid textureindex %i (%i textures)\n", i, n, loadmodel->num_textures);
5011                         continue;
5012                 }
5013                 out->texture = loadmodel->data_textures + n;
5014                 n = LittleLong(in->effectindex);
5015                 if (n < -1 || n >= loadmodel->brushq3.num_effects)
5016                 {
5017                         if (developer.integer >= 100)
5018                                 Con_Printf("Mod_Q3BSP_LoadFaces: face #%i (texture \"%s\"): invalid effectindex %i (%i effects)\n", i, out->texture->name, n, loadmodel->brushq3.num_effects);
5019                         n = -1;
5020                 }
5021                 if (n == -1)
5022                         out->effect = NULL;
5023                 else
5024                         out->effect = loadmodel->brushq3.data_effects + n;
5025
5026                 if (cls.state != ca_dedicated)
5027                 {
5028                         out->lightmaptexture = NULL;
5029                         out->deluxemaptexture = r_texture_blanknormalmap;
5030                         n = LittleLong(in->lightmapindex);
5031                         if (n < 0)
5032                                 n = -1;
5033                         else if (n >= loadmodel->brushq3.num_originallightmaps)
5034                         {
5035                                 Con_Printf("Mod_Q3BSP_LoadFaces: face #%i (texture \"%s\"): invalid lightmapindex %i (%i lightmaps)\n", i, out->texture->name, n, loadmodel->brushq3.num_originallightmaps);
5036                                 n = -1;
5037                         }
5038                         else
5039                         {
5040                                 out->lightmaptexture = loadmodel->brushq3.data_lightmaps[n >> (loadmodel->brushq3.num_lightmapmergepower * 2 + loadmodel->brushq3.deluxemapping)];
5041                                 if (loadmodel->brushq3.deluxemapping)
5042                                         out->deluxemaptexture = loadmodel->brushq3.data_deluxemaps[n >> (loadmodel->brushq3.num_lightmapmergepower * 2 + loadmodel->brushq3.deluxemapping)];
5043                         }
5044                 }
5045
5046                 firstvertex = LittleLong(in->firstvertex);
5047                 numvertices = LittleLong(in->numvertices);
5048                 firstelement = LittleLong(in->firstelement);
5049                 numtriangles = LittleLong(in->numelements) / 3;
5050                 if (numtriangles * 3 != LittleLong(in->numelements))
5051                 {
5052                         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));
5053                         continue;
5054                 }
5055                 if (firstvertex < 0 || firstvertex + numvertices > loadmodel->brushq3.num_vertices)
5056                 {
5057                         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);
5058                         continue;
5059                 }
5060                 if (firstelement < 0 || firstelement + numtriangles * 3 > loadmodel->brushq3.num_triangles * 3)
5061                 {
5062                         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);
5063                         continue;
5064                 }
5065                 switch(type)
5066                 {
5067                 case Q3FACETYPE_POLYGON:
5068                 case Q3FACETYPE_MESH:
5069                         // no processing necessary
5070                         break;
5071                 case Q3FACETYPE_PATCH:
5072                         patchsize[0] = LittleLong(in->specific.patch.patchsize[0]);
5073                         patchsize[1] = LittleLong(in->specific.patch.patchsize[1]);
5074                         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))
5075                         {
5076                                 Con_Printf("Mod_Q3BSP_LoadFaces: face #%i (texture \"%s\"): invalid patchsize %ix%i\n", i, out->texture->name, patchsize[0], patchsize[1]);
5077                                 continue;
5078                         }
5079                         originalvertex3f = loadmodel->brushq3.data_vertex3f + firstvertex * 3;
5080                         // convert patch to Q3FACETYPE_MESH
5081                         xtess = Q3PatchTesselationOnX(patchsize[0], patchsize[1], 3, originalvertex3f, r_subdivisions_tolerance.value);
5082                         ytess = Q3PatchTesselationOnY(patchsize[0], patchsize[1], 3, originalvertex3f, r_subdivisions_tolerance.value);
5083                         // bound to user settings
5084                         xtess = bound(r_subdivisions_mintess.integer, xtess, r_subdivisions_maxtess.integer);
5085                         ytess = bound(r_subdivisions_mintess.integer, ytess, r_subdivisions_maxtess.integer);
5086                         // bound to sanity settings
5087                         xtess = bound(1, xtess, 1024);
5088                         ytess = bound(1, ytess, 1024);
5089                         // bound to user limit on vertices
5090                         while ((xtess > 1 || ytess > 1) && (((patchsize[0] - 1) * xtess) + 1) * (((patchsize[1] - 1) * ytess) + 1) > min(r_subdivisions_maxvertices.integer, 262144))
5091                         {
5092                                 if (xtess > ytess)
5093                                         xtess--;
5094                                 else
5095                                         ytess--;
5096                         }
5097                         finalwidth = ((patchsize[0] - 1) * xtess) + 1;
5098                         finalheight = ((patchsize[1] - 1) * ytess) + 1;
5099                         numvertices = finalwidth * finalheight;
5100                         numtriangles = (finalwidth - 1) * (finalheight - 1) * 2;
5101                         break;
5102                 case Q3FACETYPE_FLARE:
5103                         if (developer.integer >= 100)
5104                                 Con_Printf("Mod_Q3BSP_LoadFaces: face #%i (texture \"%s\"): Q3FACETYPE_FLARE not supported (yet)\n", i, out->texture->name);
5105                         // don't render it
5106                         continue;
5107                 }
5108                 out->num_vertices = numvertices;
5109                 out->num_triangles = numtriangles;
5110                 meshvertices += out->num_vertices;
5111                 meshtriangles += out->num_triangles;
5112         }
5113
5114         i = oldi;
5115         in = oldin;
5116         out = oldout;
5117         Mod_AllocSurfMesh(loadmodel->mempool, meshvertices, meshtriangles, false, true, false);
5118         meshvertices = 0;
5119         meshtriangles = 0;
5120         for (;i < count && meshvertices + out->num_vertices <= loadmodel->surfmesh.num_vertices;i++, in++, out++)
5121         {
5122                 if (out->num_vertices < 3 || out->num_triangles < 1)
5123                         continue;
5124
5125                 type = LittleLong(in->type);
5126                 firstvertex = LittleLong(in->firstvertex);
5127                 firstelement = LittleLong(in->firstelement);
5128                 out->num_firstvertex = meshvertices;
5129                 out->num_firsttriangle = meshtriangles;
5130                 switch(type)
5131                 {
5132                 case Q3FACETYPE_POLYGON:
5133                 case Q3FACETYPE_MESH:
5134                         // no processing necessary, except for lightmap merging
5135                         for (j = 0;j < out->num_vertices;j++)
5136                         {
5137                                 (loadmodel->surfmesh.data_vertex3f + 3 * out->num_firstvertex)[j * 3 + 0] = loadmodel->brushq3.data_vertex3f[(firstvertex + j) * 3 + 0];
5138                                 (loadmodel->surfmesh.data_vertex3f + 3 * out->num_firstvertex)[j * 3 + 1] = loadmodel->brushq3.data_vertex3f[(firstvertex + j) * 3 + 1];
5139                                 (loadmodel->surfmesh.data_vertex3f + 3 * out->num_firstvertex)[j * 3 + 2] = loadmodel->brushq3.data_vertex3f[(firstvertex + j) * 3 + 2];
5140                                 (loadmodel->surfmesh.data_normal3f + 3 * out->num_firstvertex)[j * 3 + 0] = loadmodel->brushq3.data_normal3f[(firstvertex + j) * 3 + 0];
5141                                 (loadmodel->surfmesh.data_normal3f + 3 * out->num_firstvertex)[j * 3 + 1] = loadmodel->brushq3.data_normal3f[(firstvertex + j) * 3 + 1];
5142                                 (loadmodel->surfmesh.data_normal3f + 3 * out->num_firstvertex)[j * 3 + 2] = loadmodel->brushq3.data_normal3f[(firstvertex + j) * 3 + 2];
5143                                 (loadmodel->surfmesh.data_texcoordtexture2f + 2 * out->num_firstvertex)[j * 2 + 0] = loadmodel->brushq3.data_texcoordtexture2f[(firstvertex + j) * 2 + 0];
5144                                 (loadmodel->surfmesh.data_texcoordtexture2f + 2 * out->num_firstvertex)[j * 2 + 1] = loadmodel->brushq3.data_texcoordtexture2f[(firstvertex + j) * 2 + 1];
5145                                 (loadmodel->surfmesh.data_texcoordlightmap2f + 2 * out->num_firstvertex)[j * 2 + 0] = loadmodel->brushq3.data_texcoordlightmap2f[(firstvertex + j) * 2 + 0];
5146                                 (loadmodel->surfmesh.data_texcoordlightmap2f + 2 * out->num_firstvertex)[j * 2 + 1] = loadmodel->brushq3.data_texcoordlightmap2f[(firstvertex + j) * 2 + 1];
5147                                 (loadmodel->surfmesh.data_lightmapcolor4f + 4 * out->num_firstvertex)[j * 4 + 0] = loadmodel->brushq3.data_color4f[(firstvertex + j) * 4 + 0];
5148                                 (loadmodel->surfmesh.data_lightmapcolor4f + 4 * out->num_firstvertex)[j * 4 + 1] = loadmodel->brushq3.data_color4f[(firstvertex + j) * 4 + 1];
5149                                 (loadmodel->surfmesh.data_lightmapcolor4f + 4 * out->num_firstvertex)[j * 4 + 2] = loadmodel->brushq3.data_color4f[(firstvertex + j) * 4 + 2];
5150                                 (loadmodel->surfmesh.data_lightmapcolor4f + 4 * out->num_firstvertex)[j * 4 + 3] = loadmodel->brushq3.data_color4f[(firstvertex + j) * 4 + 3];
5151                         }
5152                         for (j = 0;j < out->num_triangles*3;j++)
5153                                 (loadmodel->surfmesh.data_element3i + 3 * out->num_firsttriangle)[j] = loadmodel->brushq3.data_element3i[firstelement + j] + out->num_firstvertex;
5154                         break;
5155                 case Q3FACETYPE_PATCH:
5156                         patchsize[0] = LittleLong(in->specific.patch.patchsize[0]);
5157                         patchsize[1] = LittleLong(in->specific.patch.patchsize[1]);
5158                         originalvertex3f = loadmodel->brushq3.data_vertex3f + firstvertex * 3;
5159                         originalnormal3f = loadmodel->brushq3.data_normal3f + firstvertex * 3;
5160                         originaltexcoordtexture2f = loadmodel->brushq3.data_texcoordtexture2f + firstvertex * 2;
5161                         originaltexcoordlightmap2f = loadmodel->brushq3.data_texcoordlightmap2f + firstvertex * 2;
5162                         originalcolor4f = loadmodel->brushq3.data_color4f + firstvertex * 4;
5163                         // convert patch to Q3FACETYPE_MESH
5164                         xtess = Q3PatchTesselationOnX(patchsize[0], patchsize[1], 3, originalvertex3f, r_subdivisions_tolerance.value);
5165                         ytess = Q3PatchTesselationOnY(patchsize[0], patchsize[1], 3, originalvertex3f, r_subdivisions_tolerance.value);
5166                         // bound to user settings
5167                         xtess = bound(r_subdivisions_mintess.integer, xtess, r_subdivisions_maxtess.integer);
5168                         ytess = bound(r_subdivisions_mintess.integer, ytess, r_subdivisions_maxtess.integer);
5169                         // bound to sanity settings
5170                         xtess = bound(1, xtess, 1024);
5171                         ytess = bound(1, ytess, 1024);
5172                         // bound to user limit on vertices
5173                         while ((xtess > 1 || ytess > 1) && (((patchsize[0] - 1) * xtess) + 1) * (((patchsize[1] - 1) * ytess) + 1) > min(r_subdivisions_maxvertices.integer, 262144))
5174                         {
5175                                 if (xtess > ytess)
5176                                         xtess--;
5177                                 else
5178                                         ytess--;
5179                         }
5180                         finalwidth = ((patchsize[0] - 1) * xtess) + 1;
5181                         finalheight = ((patchsize[1] - 1) * ytess) + 1;
5182                         finalvertices = finalwidth * finalheight;
5183                         finaltriangles = (finalwidth - 1) * (finalheight - 1) * 2;
5184                         type = Q3FACETYPE_MESH;
5185                         // generate geometry
5186                         // (note: normals are skipped because they get recalculated)
5187                         Q3PatchTesselateFloat(3, sizeof(float[3]), (loadmodel->surfmesh.data_vertex3f + 3 * out->num_firstvertex), patchsize[0], patchsize[1], sizeof(float[3]), originalvertex3f, xtess, ytess);
5188                         Q3PatchTesselateFloat(3, sizeof(float[3]), (loadmodel->surfmesh.data_normal3f + 3 * out->num_firstvertex), patchsize[0], patchsize[1], sizeof(float[3]), originalnormal3f, xtess, ytess);
5189                         Q3PatchTesselateFloat(2, sizeof(float[2]), (loadmodel->surfmesh.data_texcoordtexture2f + 2 * out->num_firstvertex), patchsize[0], patchsize[1], sizeof(float[2]), originaltexcoordtexture2f, xtess, ytess);
5190                         Q3PatchTesselateFloat(2, sizeof(float[2]), (loadmodel->surfmesh.data_texcoordlightmap2f + 2 * out->num_firstvertex), patchsize[0], patchsize[1], sizeof(float[2]), originaltexcoordlightmap2f, xtess, ytess);
5191                         Q3PatchTesselateFloat(4, sizeof(float[4]), (loadmodel->surfmesh.data_lightmapcolor4f + 4 * out->num_firstvertex), patchsize[0], patchsize[1], sizeof(float[4]), originalcolor4f, xtess, ytess);
5192                         Q3PatchTriangleElements((loadmodel->surfmesh.data_element3i + 3 * out->num_firsttriangle), finalwidth, finalheight, out->num_firstvertex);
5193                         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);
5194                         if (developer.integer >= 100)
5195                         {
5196                                 if (out->num_triangles < finaltriangles)
5197                                         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);
5198                                 else
5199                                         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);
5200                         }
5201                         // q3map does not put in collision brushes for curves... ugh
5202                         // build the lower quality collision geometry
5203                         xtess = Q3PatchTesselationOnX(patchsize[0], patchsize[1], 3, originalvertex3f, r_subdivisions_collision_tolerance.value);
5204                         ytess = Q3PatchTesselationOnY(patchsize[0], patchsize[1], 3, originalvertex3f, r_subdivisions_collision_tolerance.value);
5205                         // bound to user settings
5206                         xtess = bound(r_subdivisions_collision_mintess.integer, xtess, r_subdivisions_collision_maxtess.integer);
5207                         ytess = bound(r_subdivisions_collision_mintess.integer, ytess, r_subdivisions_collision_maxtess.integer);
5208                         // bound to sanity settings
5209                         xtess = bound(1, xtess, 1024);
5210                         ytess = bound(1, ytess, 1024);
5211                         // bound to user limit on vertices
5212                         while ((xtess > 1 || ytess > 1) && (((patchsize[0] - 1) * xtess) + 1) * (((patchsize[1] - 1) * ytess) + 1) > min(r_subdivisions_collision_maxvertices.integer, 262144))
5213                         {
5214                                 if (xtess > ytess)
5215                                         xtess--;
5216                                 else
5217                                         ytess--;
5218                         }
5219                         finalwidth = ((patchsize[0] - 1) * xtess) + 1;
5220                         finalheight = ((patchsize[1] - 1) * ytess) + 1;
5221                         finalvertices = finalwidth * finalheight;
5222                         finaltriangles = (finalwidth - 1) * (finalheight - 1) * 2;
5223
5224                         out->data_collisionvertex3f = (float *)Mem_Alloc(loadmodel->mempool, sizeof(float[3]) * finalvertices);
5225                         out->data_collisionelement3i = (int *)Mem_Alloc(loadmodel->mempool, sizeof(int[3]) * finaltriangles);
5226                         out->num_collisionvertices = finalvertices;
5227                         out->num_collisiontriangles = finaltriangles;
5228                         Q3PatchTesselateFloat(3, sizeof(float[3]), out->data_collisionvertex3f, patchsize[0], patchsize[1], sizeof(float[3]), originalvertex3f, xtess, ytess);
5229                         Q3PatchTriangleElements(out->data_collisionelement3i, finalwidth, finalheight, 0);
5230
5231                         //Mod_SnapVertices(3, out->num_vertices, (loadmodel->surfmesh.data_vertex3f + 3 * out->num_firstvertex), 0.25);
5232                         Mod_SnapVertices(3, out->num_collisionvertices, out->data_collisionvertex3f, 1);
5233
5234                         oldnumtriangles = out->num_triangles;
5235                         oldnumtriangles2 = out->num_collisiontriangles;
5236                         out->num_collisiontriangles = Mod_RemoveDegenerateTriangles(out->num_collisiontriangles, out->data_collisionelement3i, out->data_collisionelement3i, out->data_collisionvertex3f);
5237                         if (developer.integer >= 100)
5238                                 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);
5239                         break;
5240                 default:
5241                         break;
5242                 }
5243                 meshvertices += out->num_vertices;
5244                 meshtriangles += out->num_triangles;
5245                 for (j = 0, invalidelements = 0;j < out->num_triangles * 3;j++)
5246                         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)
5247                                 invalidelements++;
5248                 if (invalidelements)
5249                 {
5250                         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);
5251                         for (j = 0;j < out->num_triangles * 3;j++)
5252                         {
5253                                 Con_Printf(" %i", (loadmodel->surfmesh.data_element3i + 3 * out->num_firsttriangle)[j] - out->num_firstvertex);
5254                                 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)
5255                                         (loadmodel->surfmesh.data_element3i + 3 * out->num_firsttriangle)[j] = out->num_firstvertex;
5256                         }
5257                         Con_Print("\n");
5258                 }
5259                 // calculate a bounding box
5260                 VectorClear(out->mins);
5261                 VectorClear(out->maxs);
5262                 if (out->num_vertices)
5263                 {
5264                         if (cls.state != ca_dedicated && out->lightmaptexture)
5265                         {
5266                                 // figure out which part of the merged lightmap this fits into
5267                                 int lightmapindex = LittleLong(in->lightmapindex) >> loadmodel->brushq3.deluxemapping;
5268                                 int mergewidth = R_TextureWidth(out->lightmaptexture) / 128;
5269                                 int mergeheight = R_TextureHeight(out->lightmaptexture) / 128;
5270                                 lightmapindex &= mergewidth * mergeheight - 1;
5271                                 lightmaptcscale[0] = 1.0f / mergewidth;
5272                                 lightmaptcscale[1] = 1.0f / mergeheight;
5273                                 lightmaptcbase[0] = (lightmapindex % mergewidth) * lightmaptcscale[0];
5274                                 lightmaptcbase[1] = (lightmapindex / mergewidth) * lightmaptcscale[1];
5275                                 // modify the lightmap texcoords to match this region of the merged lightmap
5276                                 for (j = 0, v = loadmodel->surfmesh.data_texcoordlightmap2f + 2 * out->num_firstvertex;j < out->num_vertices;j++, v += 2)
5277                                 {
5278                                         v[0] = v[0] * lightmaptcscale[0] + lightmaptcbase[0];
5279                                         v[1] = v[1] * lightmaptcscale[1] + lightmaptcbase[1];
5280                                 }
5281                         }
5282                         VectorCopy((loadmodel->surfmesh.data_vertex3f + 3 * out->num_firstvertex), out->mins);
5283                         VectorCopy((loadmodel->surfmesh.data_vertex3f + 3 * out->num_firstvertex), out->maxs);
5284                         for (j = 1, v = (loadmodel->surfmesh.data_vertex3f + 3 * out->num_firstvertex) + 3;j < out->num_vertices;j++, v += 3)
5285                         {
5286                                 out->mins[0] = min(out->mins[0], v[0]);
5287                                 out->maxs[0] = max(out->maxs[0], v[0]);
5288                                 out->mins[1] = min(out->mins[1], v[1]);
5289                                 out->maxs[1] = max(out->maxs[1], v[1]);
5290                                 out->mins[2] = min(out->mins[2], v[2]);
5291                                 out->maxs[2] = max(out->maxs[2], v[2]);
5292                         }
5293                         out->mins[0] -= 1.0f;
5294                         out->mins[1] -= 1.0f;
5295                         out->mins[2] -= 1.0f;
5296                         out->maxs[0] += 1.0f;
5297                         out->maxs[1] += 1.0f;
5298                         out->maxs[2] += 1.0f;
5299                 }
5300                 // set lightmap styles for consistency with q1bsp
5301                 //out->lightmapinfo->styles[0] = 0;
5302                 //out->lightmapinfo->styles[1] = 255;
5303                 //out->lightmapinfo->styles[2] = 255;
5304                 //out->lightmapinfo->styles[3] = 255;
5305         }
5306
5307         // for per pixel lighting
5308         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);
5309
5310         // free the no longer needed vertex data
5311         loadmodel->brushq3.num_vertices = 0;
5312         if (loadmodel->brushq3.data_vertex3f)
5313                 Mem_Free(loadmodel->brushq3.data_vertex3f);
5314         loadmodel->brushq3.data_vertex3f = NULL;
5315         loadmodel->brushq3.data_normal3f = NULL;
5316         loadmodel->brushq3.data_texcoordtexture2f = NULL;
5317         loadmodel->brushq3.data_texcoordlightmap2f = NULL;
5318         loadmodel->brushq3.data_color4f = NULL;
5319         // free the no longer needed triangle data
5320         loadmodel->brushq3.num_triangles = 0;
5321         if (loadmodel->brushq3.data_element3i)
5322                 Mem_Free(loadmodel->brushq3.data_element3i);
5323         loadmodel->brushq3.data_element3i = NULL;
5324 }
5325
5326 static void Mod_Q3BSP_LoadModels(lump_t *l)
5327 {
5328         q3dmodel_t *in;
5329         q3dmodel_t *out;
5330         int i, j, n, c, count;
5331
5332         in = (q3dmodel_t *)(mod_base + l->fileofs);
5333         if (l->filelen % sizeof(*in))
5334                 Host_Error("Mod_Q3BSP_LoadModels: funny lump size in %s",loadmodel->name);
5335         count = l->filelen / sizeof(*in);
5336         out = (q3dmodel_t *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
5337
5338         loadmodel->brushq3.data_models = out;
5339         loadmodel->brushq3.num_models = count;
5340
5341         for (i = 0;i < count;i++, in++, out++)
5342         {
5343                 for (j = 0;j < 3;j++)
5344                 {
5345                         out->mins[j] = LittleFloat(in->mins[j]);
5346                         out->maxs[j] = LittleFloat(in->maxs[j]);
5347                 }
5348                 n = LittleLong(in->firstface);
5349                 c = LittleLong(in->numfaces);
5350                 if (n < 0 || n + c > loadmodel->num_surfaces)
5351                         Host_Error("Mod_Q3BSP_LoadModels: invalid face range %i : %i (%i faces)", n, n + c, loadmodel->num_surfaces);
5352                 out->firstface = n;
5353                 out->numfaces = c;
5354                 n = LittleLong(in->firstbrush);
5355                 c = LittleLong(in->numbrushes);
5356                 if (n < 0 || n + c > loadmodel->brush.num_brushes)
5357                         Host_Error("Mod_Q3BSP_LoadModels: invalid brush range %i : %i (%i brushes)", n, n + c, loadmodel->brush.num_brushes);
5358                 out->firstbrush = n;
5359                 out->numbrushes = c;
5360         }
5361 }
5362
5363 static void Mod_Q3BSP_LoadLeafBrushes(lump_t *l)
5364 {
5365         int *in;
5366         int *out;
5367         int i, n, count;
5368
5369         in = (int *)(mod_base + l->fileofs);
5370         if (l->filelen % sizeof(*in))
5371                 Host_Error("Mod_Q3BSP_LoadLeafBrushes: funny lump size in %s",loadmodel->name);
5372         count = l->filelen / sizeof(*in);
5373         out = (int *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
5374
5375         loadmodel->brush.data_leafbrushes = out;
5376         loadmodel->brush.num_leafbrushes = count;
5377
5378         for (i = 0;i < count;i++, in++, out++)
5379         {
5380                 n = LittleLong(*in);
5381                 if (n < 0 || n >= loadmodel->brush.num_brushes)
5382                         Host_Error("Mod_Q3BSP_LoadLeafBrushes: invalid brush index %i (%i brushes)", n, loadmodel->brush.num_brushes);
5383                 *out = n;
5384         }
5385 }
5386
5387 static void Mod_Q3BSP_LoadLeafFaces(lump_t *l)
5388 {
5389         int *in;
5390         int *out;
5391         int i, n, count;
5392
5393         in = (int *)(mod_base + l->fileofs);
5394         if (l->filelen % sizeof(*in))
5395                 Host_Error("Mod_Q3BSP_LoadLeafFaces: funny lump size in %s",loadmodel->name);
5396         count = l->filelen / sizeof(*in);
5397         out = (int *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
5398
5399         loadmodel->brush.data_leafsurfaces = out;
5400         loadmodel->brush.num_leafsurfaces = count;
5401
5402         for (i = 0;i < count;i++, in++, out++)
5403         {
5404                 n = LittleLong(*in);
5405                 if (n < 0 || n >= loadmodel->num_surfaces)
5406                         Host_Error("Mod_Q3BSP_LoadLeafFaces: invalid face index %i (%i faces)", n, loadmodel->num_surfaces);
5407                 *out = n;
5408         }
5409 }
5410
5411 static void Mod_Q3BSP_LoadLeafs(lump_t *l)
5412 {
5413         q3dleaf_t *in;
5414         mleaf_t *out;
5415         int i, j, n, c, count;
5416
5417         in = (q3dleaf_t *)(mod_base + l->fileofs);
5418         if (l->filelen % sizeof(*in))
5419                 Host_Error("Mod_Q3BSP_LoadLeafs: funny lump size in %s",loadmodel->name);
5420         count = l->filelen / sizeof(*in);
5421         out = (mleaf_t *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
5422
5423         loadmodel->brush.data_leafs = out;
5424         loadmodel->brush.num_leafs = count;
5425
5426         for (i = 0;i < count;i++, in++, out++)
5427         {
5428                 out->parent = NULL;
5429                 out->plane = NULL;
5430                 out->clusterindex = LittleLong(in->clusterindex);
5431                 out->areaindex = LittleLong(in->areaindex);
5432                 for (j = 0;j < 3;j++)
5433                 {
5434                         // yes the mins/maxs are ints
5435                         out->mins[j] = LittleLong(in->mins[j]) - 1;
5436                         out->maxs[j] = LittleLong(in->maxs[j]) + 1;
5437                 }
5438                 n = LittleLong(in->firstleafface);
5439                 c = LittleLong(in->numleaffaces);
5440                 if (n < 0 || n + c > loadmodel->brush.num_leafsurfaces)
5441                         Host_Error("Mod_Q3BSP_LoadLeafs: invalid leafsurface range %i : %i (%i leafsurfaces)", n, n + c, loadmodel->brush.num_leafsurfaces);
5442                 out->firstleafsurface = loadmodel->brush.data_leafsurfaces + n;
5443                 out->numleafsurfaces = c;
5444                 n = LittleLong(in->firstleafbrush);
5445                 c = LittleLong(in->numleafbrushes);
5446                 if (n < 0 || n + c > loadmodel->brush.num_leafbrushes)
5447                         Host_Error("Mod_Q3BSP_LoadLeafs: invalid leafbrush range %i : %i (%i leafbrushes)", n, n + c, loadmodel->brush.num_leafbrushes);
5448                 out->firstleafbrush = loadmodel->brush.data_leafbrushes + n;
5449                 out->numleafbrushes = c;
5450         }
5451 }
5452
5453 static void Mod_Q3BSP_LoadNodes(lump_t *l)
5454 {
5455         q3dnode_t *in;
5456         mnode_t *out;
5457         int i, j, n, count;
5458
5459         in = (q3dnode_t *)(mod_base + l->fileofs);
5460         if (l->filelen % sizeof(*in))
5461                 Host_Error("Mod_Q3BSP_LoadNodes: funny lump size in %s",loadmodel->name);
5462         count = l->filelen / sizeof(*in);
5463         out = (mnode_t *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
5464
5465         loadmodel->brush.data_nodes = out;
5466         loadmodel->brush.num_nodes = count;
5467
5468         for (i = 0;i < count;i++, in++, out++)
5469         {
5470                 out->parent = NULL;
5471                 n = LittleLong(in->planeindex);
5472                 if (n < 0 || n >= loadmodel->brush.num_planes)
5473                         Host_Error("Mod_Q3BSP_LoadNodes: invalid planeindex %i (%i planes)", n, loadmodel->brush.num_planes);
5474                 out->plane = loadmodel->brush.data_planes + n;
5475                 for (j = 0;j < 2;j++)
5476                 {
5477                         n = LittleLong(in->childrenindex[j]);
5478                         if (n >= 0)
5479                         {
5480                                 if (n >= loadmodel->brush.num_nodes)
5481                                         Host_Error("Mod_Q3BSP_LoadNodes: invalid child node index %i (%i nodes)", n, loadmodel->brush.num_nodes);
5482                                 out->children[j] = loadmodel->brush.data_nodes + n;
5483                         }
5484                         else
5485                         {
5486                                 n = -1 - n;
5487                                 if (n >= loadmodel->brush.num_leafs)
5488                                         Host_Error("Mod_Q3BSP_LoadNodes: invalid child leaf index %i (%i leafs)", n, loadmodel->brush.num_leafs);
5489                                 out->children[j] = (mnode_t *)(loadmodel->brush.data_leafs + n);
5490                         }
5491                 }
5492                 for (j = 0;j < 3;j++)
5493                 {
5494                         // yes the mins/maxs are ints
5495                         out->mins[j] = LittleLong(in->mins[j]) - 1;
5496                         out->maxs[j] = LittleLong(in->maxs[j]) + 1;
5497                 }
5498         }
5499
5500         // set the parent pointers
5501         Mod_Q1BSP_LoadNodes_RecursiveSetParent(loadmodel->brush.data_nodes, NULL);
5502 }
5503
5504 static void Mod_Q3BSP_LoadLightGrid(lump_t *l)
5505 {
5506         q3dlightgrid_t *in;
5507         q3dlightgrid_t *out;
5508         int count;
5509
5510         in = (q3dlightgrid_t *)(mod_base + l->fileofs);
5511         if (l->filelen % sizeof(*in))
5512                 Host_Error("Mod_Q3BSP_LoadLightGrid: funny lump size in %s",loadmodel->name);
5513         loadmodel->brushq3.num_lightgrid_scale[0] = 1.0f / loadmodel->brushq3.num_lightgrid_cellsize[0];
5514         loadmodel->brushq3.num_lightgrid_scale[1] = 1.0f / loadmodel->brushq3.num_lightgrid_cellsize[1];
5515         loadmodel->brushq3.num_lightgrid_scale[2] = 1.0f / loadmodel->brushq3.num_lightgrid_cellsize[2];
5516         loadmodel->brushq3.num_lightgrid_imins[0] = (int)ceil(loadmodel->brushq3.data_models->mins[0] * loadmodel->brushq3.num_lightgrid_scale[0]);
5517         loadmodel->brushq3.num_lightgrid_imins[1] = (int)ceil(loadmodel->brushq3.data_models->mins[1] * loadmodel->brushq3.num_lightgrid_scale[1]);
5518         loadmodel->brushq3.num_lightgrid_imins[2] = (int)ceil(loadmodel->brushq3.data_models->mins[2] * loadmodel->brushq3.num_lightgrid_scale[2]);
5519         loadmodel->brushq3.num_lightgrid_imaxs[0] = (int)floor(loadmodel->brushq3.data_models->maxs[0] * loadmodel->brushq3.num_lightgrid_scale[0]);
5520         loadmodel->brushq3.num_lightgrid_imaxs[1] = (int)floor(loadmodel->brushq3.data_models->maxs[1] * loadmodel->brushq3.num_lightgrid_scale[1]);
5521         loadmodel->brushq3.num_lightgrid_imaxs[2] = (int)floor(loadmodel->brushq3.data_models->maxs[2] * loadmodel->brushq3.num_lightgrid_scale[2]);
5522         loadmodel->brushq3.num_lightgrid_isize[0] = loadmodel->brushq3.num_lightgrid_imaxs[0] - loadmodel->brushq3.num_lightgrid_imins[0] + 1;
5523         loadmodel->brushq3.num_lightgrid_isize[1] = loadmodel->brushq3.num_lightgrid_imaxs[1] - loadmodel->brushq3.num_lightgrid_imins[1] + 1;
5524         loadmodel->brushq3.num_lightgrid_isize[2] = loadmodel->brushq3.num_lightgrid_imaxs[2] - loadmodel->brushq3.num_lightgrid_imins[2] + 1;
5525         count = loadmodel->brushq3.num_lightgrid_isize[0] * loadmodel->brushq3.num_lightgrid_isize[1] * loadmodel->brushq3.num_lightgrid_isize[2];
5526         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]);
5527         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]);
5528
5529         // if lump is empty there is nothing to load, we can deal with that in the LightPoint code
5530         if (l->filelen)
5531         {
5532                 if (l->filelen < count * (int)sizeof(*in))
5533                         Host_Error("Mod_Q3BSP_LoadLightGrid: invalid lightgrid lump size %i bytes, should be %i bytes (%ix%ix%i)", l->filelen, (int)(count * sizeof(*in)), loadmodel->brushq3.num_lightgrid_dimensions[0], loadmodel->brushq3.num_lightgrid_dimensions[1], loadmodel->brushq3.num_lightgrid_dimensions[2]);
5534                 if (l->filelen != count * (int)sizeof(*in))
5535                         Con_Printf("Mod_Q3BSP_LoadLightGrid: Warning: calculated lightgrid size %i bytes does not match lump size %i\n", (int)(count * sizeof(*in)), l->filelen);
5536                 out = (q3dlightgrid_t *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
5537                 loadmodel->brushq3.data_lightgrid = out;
5538                 loadmodel->brushq3.num_lightgrid = count;
5539                 // no swapping or validation necessary
5540                 memcpy(out, in, count * (int)sizeof(*out));
5541         }
5542 }
5543
5544 static void Mod_Q3BSP_LoadPVS(lump_t *l)
5545 {
5546         q3dpvs_t *in;
5547         int totalchains;
5548
5549         if (l->filelen == 0)
5550         {
5551                 int i;
5552                 // unvised maps often have cluster indices even without pvs, so check
5553                 // leafs to find real number of clusters
5554                 loadmodel->brush.num_pvsclusters = 1;
5555                 for (i = 0;i < loadmodel->brush.num_leafs;i++)
5556                         loadmodel->brush.num_pvsclusters = max(loadmodel->brush.num_pvsclusters, loadmodel->brush.data_leafs[i].clusterindex + 1);
5557
5558                 // create clusters
5559                 loadmodel->brush.num_pvsclusterbytes = (loadmodel->brush.num_pvsclusters + 7) / 8;
5560                 totalchains = loadmodel->brush.num_pvsclusterbytes * loadmodel->brush.num_pvsclusters;
5561                 loadmodel->brush.data_pvsclusters = (unsigned char *)Mem_Alloc(loadmodel->mempool, totalchains);
5562                 memset(loadmodel->brush.data_pvsclusters, 0xFF, totalchains);
5563                 return;
5564         }
5565
5566         in = (q3dpvs_t *)(mod_base + l->fileofs);
5567         if (l->filelen < 9)
5568                 Host_Error("Mod_Q3BSP_LoadPVS: funny lump size in %s",loadmodel->name);
5569
5570         loadmodel->brush.num_pvsclusters = LittleLong(in->numclusters);
5571         loadmodel->brush.num_pvsclusterbytes = LittleLong(in->chainlength);
5572         if (loadmodel->brush.num_pvsclusterbytes < ((loadmodel->brush.num_pvsclusters + 7) / 8))
5573                 Host_Error("Mod_Q3BSP_LoadPVS: (chainlength = %i) < ((numclusters = %i) + 7) / 8", loadmodel->brush.num_pvsclusterbytes, loadmodel->brush.num_pvsclusters);
5574         totalchains = loadmodel->brush.num_pvsclusterbytes * loadmodel->brush.num_pvsclusters;
5575         if (l->filelen < totalchains + (int)sizeof(*in))
5576                 Host_Error("Mod_Q3BSP_LoadPVS: lump too small ((numclusters = %i) * (chainlength = %i) + sizeof(q3dpvs_t) == %i bytes, lump is %i bytes)", loadmodel->brush.num_pvsclusters, loadmodel->brush.num_pvsclusterbytes, (int)(totalchains + sizeof(*in)), l->filelen);
5577
5578         loadmodel->brush.data_pvsclusters = (unsigned char *)Mem_Alloc(loadmodel->mempool, totalchains);
5579         memcpy(loadmodel->brush.data_pvsclusters, (unsigned char *)(in + 1), totalchains);
5580 }
5581
5582 static void Mod_Q3BSP_LightPoint(model_t *model, const vec3_t p, vec3_t ambientcolor, vec3_t diffusecolor, vec3_t diffusenormal)
5583 {
5584         int i, j, k, index[3];
5585         float transformed[3], blend1, blend2, blend, stylescale;
5586         q3dlightgrid_t *a, *s;
5587
5588         // scale lighting by lightstyle[0] so that darkmode in dpmod works properly
5589         stylescale = r_refdef.lightstylevalue[0] * (1.0f / 264.0f);
5590
5591         if (!model->brushq3.num_lightgrid)
5592         {
5593                 ambientcolor[0] = stylescale;
5594                 ambientcolor[1] = stylescale;
5595                 ambientcolor[2] = stylescale;
5596                 return;
5597         }
5598
5599         Matrix4x4_Transform(&model->brushq3.num_lightgrid_indexfromworld, p, transformed);
5600         //Matrix4x4_Print(&model->brushq3.num_lightgrid_indexfromworld);
5601         //Con_Printf("%f %f %f transformed %f %f %f clamped ", p[0], p[1], p[2], transformed[0], transformed[1], transformed[2]);
5602         transformed[0] = bound(0, transformed[0], model->brushq3.num_lightgrid_isize[0] - 1);
5603         transformed[1] = bound(0, transformed[1], model->brushq3.num_lightgrid_isize[1] - 1);
5604         transformed[2] = bound(0, transformed[2], model->brushq3.num_lightgrid_isize[2] - 1);
5605         index[0] = (int)floor(transformed[0]);
5606         index[1] = (int)floor(transformed[1]);
5607         index[2] = (int)floor(transformed[2]);
5608         //Con_Printf("%f %f %f index %i %i %i:\n", transformed[0], transformed[1], transformed[2], index[0], index[1], index[2]);
5609
5610         // now lerp the values
5611         VectorClear(diffusenormal);
5612         a = &model->brushq3.data_lightgrid[(index[2] * model->brushq3.num_lightgrid_isize[1] + index[1]) * model->brushq3.num_lightgrid_isize[0] + index[0]];
5613         for (k = 0;k < 2;k++)
5614         {
5615                 blend1 = (k ? (transformed[2] - index[2]) : (1 - (transformed[2] - index[2])));
5616                 if (blend1 < 0.001f || index[2] + k >= model->brushq3.num_lightgrid_isize[2])
5617                         continue;
5618                 for (j = 0;j < 2;j++)
5619                 {
5620                         blend2 = blend1 * (j ? (transformed[1] - index[1]) : (1 - (transformed[1] - index[1])));
5621                         if (blend2 < 0.001f || index[1] + j >= model->brushq3.num_lightgrid_isize[1])
5622                                 continue;
5623                         for (i = 0;i < 2;i++)
5624                         {
5625                                 blend = blend2 * (i ? (transformed[0] - index[0]) : (1 - (transformed[0] - index[0]))) * stylescale;
5626                                 if (blend < 0.001f || index[0] + i >= model->brushq3.num_lightgrid_isize[0])
5627                                         continue;
5628                                 s = a + (k * model->brushq3.num_lightgrid_isize[1] + j) * model->brushq3.num_lightgrid_isize[0] + i;
5629                                 VectorMA(ambientcolor, blend * (1.0f / 128.0f), s->ambientrgb, ambientcolor);
5630                                 VectorMA(diffusecolor, blend * (1.0f / 128.0f), s->diffusergb, diffusecolor);
5631                                 // this uses the mod_md3_sin table because the values are
5632                                 // already in the 0-255 range, the 64+ bias fetches a cosine
5633                                 // instead of a sine value
5634                                 diffusenormal[0] += blend * (mod_md3_sin[64 + s->diffuseyaw] * mod_md3_sin[s->diffusepitch]);
5635                                 diffusenormal[1] += blend * (mod_md3_sin[     s->diffuseyaw] * mod_md3_sin[s->diffusepitch]);
5636                                 diffusenormal[2] += blend * (mod_md3_sin[64 + s->diffusepitch]);
5637                                 //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)));
5638                         }
5639                 }
5640         }
5641
5642         // normalize the light direction before turning
5643         VectorNormalize(diffusenormal);
5644         //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]);
5645 }
5646
5647 static void Mod_Q3BSP_TracePoint_RecursiveBSPNode(trace_t *trace, model_t *model, mnode_t *node, const vec3_t point, int markframe)
5648 {
5649         int i;
5650         mleaf_t *leaf;
5651         colbrushf_t *brush;
5652         // find which leaf the point is in
5653         while (node->plane)
5654                 node = node->children[DotProduct(point, node->plane->normal) < node->plane->dist];
5655         // point trace the brushes
5656         leaf = (mleaf_t *)node;
5657         for (i = 0;i < leaf->numleafbrushes;i++)
5658         {
5659                 brush = model->brush.data_brushes[leaf->firstleafbrush[i]].colbrushf;
5660                 if (brush && brush->markframe != markframe && BoxesOverlap(point, point, brush->mins, brush->maxs))
5661                 {
5662                         brush->markframe = markframe;
5663                         Collision_TracePointBrushFloat(trace, point, brush);
5664                 }
5665         }
5666         // can't do point traces on curves (they have no thickness)
5667 }
5668
5669 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)
5670 {
5671         int i, startside, endside;
5672         float dist1, dist2, midfrac, mid[3], nodesegmentmins[3], nodesegmentmaxs[3];
5673         mleaf_t *leaf;
5674         msurface_t *surface;
5675         mplane_t *plane;
5676         colbrushf_t *brush;
5677         // walk the tree until we hit a leaf, recursing for any split cases
5678         while (node->plane)
5679         {
5680                 // abort if this part of the bsp tree can not be hit by this trace
5681 //              if (!(node->combinedsupercontents & trace->hitsupercontentsmask))
5682 //                      return;
5683                 plane = node->plane;
5684                 // axial planes are much more common than non-axial, so an optimized
5685                 // axial case pays off here
5686                 if (plane->type < 3)
5687                 {
5688                         dist1 = start[plane->type] - plane->dist;
5689                         dist2 = end[plane->type] - plane->dist;
5690                 }
5691                 else
5692                 {
5693                         dist1 = DotProduct(start, plane->normal) - plane->dist;
5694                         dist2 = DotProduct(end, plane->normal) - plane->dist;
5695                 }
5696                 startside = dist1 < 0;
5697                 endside = dist2 < 0;
5698                 if (startside == endside)
5699                 {
5700                         // most of the time the line fragment is on one side of the plane
5701                         node = node->children[startside];
5702                 }
5703                 else
5704                 {
5705                         // line crosses node plane, split the line
5706                         dist1 = PlaneDiff(linestart, plane);
5707                         dist2 = PlaneDiff(lineend, plane);
5708                         midfrac = dist1 / (dist1 - dist2);
5709                         VectorLerp(linestart, midfrac, lineend, mid);
5710                         // take the near side first
5711                         Mod_Q3BSP_TraceLine_RecursiveBSPNode(trace, model, node->children[startside], start, mid, startfrac, midfrac, linestart, lineend, markframe, segmentmins, segmentmaxs);
5712                         // if we found an impact on the front side, don't waste time
5713                         // exploring the far side
5714                         if (midfrac <= trace->realfraction)
5715                                 Mod_Q3BSP_TraceLine_RecursiveBSPNode(trace, model, node->children[endside], mid, end, midfrac, endfrac, linestart, lineend, markframe, segmentmins, segmentmaxs);
5716                         return;
5717                 }
5718         }
5719         // abort if this part of the bsp tree can not be hit by this trace
5720 //      if (!(node->combinedsupercontents & trace->hitsupercontentsmask))
5721 //              return;
5722         // hit a leaf
5723         nodesegmentmins[0] = min(start[0], end[0]) - 1;
5724         nodesegmentmins[1] = min(start[1], end[1]) - 1;
5725         nodesegmentmins[2] = min(start[2], end[2]) - 1;
5726         nodesegmentmaxs[0] = max(start[0], end[0]) + 1;
5727         nodesegmentmaxs[1] = max(start[1], end[1]) + 1;
5728         nodesegmentmaxs[2] = max(start[2], end[2]) + 1;
5729         // line trace the brushes
5730         leaf = (mleaf_t *)node;
5731         for (i = 0;i < leaf->numleafbrushes;i++)
5732         {
5733                 brush = model->brush.data_brushes[leaf->firstleafbrush[i]].colbrushf;
5734                 if (brush && brush->markframe != markframe && BoxesOverlap(nodesegmentmins, nodesegmentmaxs, brush->mins, brush->maxs))
5735                 {
5736                         brush->markframe = markframe;
5737                         Collision_TraceLineBrushFloat(trace, linestart, lineend, brush, brush);
5738                 }
5739         }
5740         // can't do point traces on curves (they have no thickness)
5741         if (leaf->containscollisionsurfaces && mod_q3bsp_curves_collisions.integer && !VectorCompare(start, end))
5742         {
5743                 // line trace the curves
5744                 for (i = 0;i < leaf->numleafsurfaces;i++)
5745                 {
5746                         surface = model->data_surfaces + leaf->firstleafsurface[i];
5747                         if (surface->num_collisiontriangles && surface->collisionmarkframe != markframe && BoxesOverlap(nodesegmentmins, nodesegmentmaxs, surface->mins, surface->maxs))
5748                         {
5749                                 surface->collisionmarkframe = markframe;
5750                                 Collision_TraceLineTriangleMeshFloat(trace, linestart, lineend, surface->num_collisiontriangles, surface->data_collisionelement3i, surface->data_collisionvertex3f, surface->texture->supercontents, surface->texture->surfaceflags, surface->texture, segmentmins, segmentmaxs);
5751                         }
5752                 }
5753         }
5754 }
5755
5756 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)
5757 {
5758         int i;
5759         int sides;
5760         mleaf_t *leaf;
5761         colbrushf_t *brush;
5762         msurface_t *surface;
5763         mplane_t *plane;
5764         float nodesegmentmins[3], nodesegmentmaxs[3];
5765         // walk the tree until we hit a leaf, recursing for any split cases
5766         while (node->plane)
5767         {
5768                 // abort if this part of the bsp tree can not be hit by this trace
5769 //              if (!(node->combinedsupercontents & trace->hitsupercontentsmask))
5770 //                      return;
5771                 plane = node->plane;
5772                 // axial planes are much more common than non-axial, so an optimized
5773                 // axial case pays off here
5774                 if (plane->type < 3)
5775                 {
5776                         // this is an axial plane, compare bounding box directly to it and
5777                         // recurse sides accordingly
5778                         // recurse down node sides
5779                         // use an inlined axial BoxOnPlaneSide to slightly reduce overhead
5780                         //sides = BoxOnPlaneSide(nodesegmentmins, nodesegmentmaxs, plane);
5781                         //sides = ((segmentmaxs[plane->type] >= plane->dist) | ((segmentmins[plane->type] < plane->dist) << 1));
5782                         sides = ((segmentmaxs[plane->type] >= plane->dist) + ((segmentmins[plane->type] < plane->dist) * 2));
5783                 }
5784                 else
5785                 {
5786                         // this is a non-axial plane, so check if the start and end boxes
5787                         // are both on one side of the plane to handle 'diagonal' cases
5788                         sides = BoxOnPlaneSide(thisbrush_start->mins, thisbrush_start->maxs, plane) | BoxOnPlaneSide(thisbrush_end->mins, thisbrush_end->maxs, plane);
5789                 }
5790                 if (sides == 3)
5791                 {
5792                         // segment crosses plane
5793                         Mod_Q3BSP_TraceBrush_RecursiveBSPNode(trace, model, node->children[0], thisbrush_start, thisbrush_end, markframe, segmentmins, segmentmaxs);
5794                         sides = 2;
5795                 }
5796                 // if sides == 0 then the trace itself is bogus (Not A Number values),
5797                 // in this case we simply pretend the trace hit nothing
5798                 if (sides == 0)
5799                         return; // ERROR: NAN bounding box!
5800                 // take whichever side the segment box is on
5801                 node = node->children[sides - 1];
5802         }
5803         // abort if this part of the bsp tree can not be hit by this trace
5804 //      if (!(node->combinedsupercontents & trace->hitsupercontentsmask))
5805 //              return;
5806         nodesegmentmins[0] = max(segmentmins[0], node->mins[0] - 1);
5807         nodesegmentmins[1] = max(segmentmins[1], node->mins[1] - 1);
5808         nodesegmentmins[2] = max(segmentmins[2], node->mins[2] - 1);
5809         nodesegmentmaxs[0] = min(segmentmaxs[0], node->maxs[0] + 1);
5810         nodesegmentmaxs[1] = min(segmentmaxs[1], node->maxs[1] + 1);
5811         nodesegmentmaxs[2] = min(segmentmaxs[2], node->maxs[2] + 1);
5812         // hit a leaf
5813         leaf = (mleaf_t *)node;
5814         for (i = 0;i < leaf->numleafbrushes;i++)
5815         {
5816                 brush = model->brush.data_brushes[leaf->firstleafbrush[i]].colbrushf;
5817                 if (brush && brush->markframe != markframe && BoxesOverlap(nodesegmentmins, nodesegmentmaxs, brush->mins, brush->maxs))
5818                 {
5819                         brush->markframe = markframe;
5820                         Collision_TraceBrushBrushFloat(trace, thisbrush_start, thisbrush_end, brush, brush);
5821                 }
5822         }
5823         if (leaf->containscollisionsurfaces && mod_q3bsp_curves_collisions.integer)
5824         {
5825                 for (i = 0;i < leaf->numleafsurfaces;i++)
5826                 {
5827                         surface = model->data_surfaces + leaf->firstleafsurface[i];
5828                         if (surface->num_collisiontriangles && surface->collisionmarkframe != markframe && BoxesOverlap(nodesegmentmins, nodesegmentmaxs, surface->mins, surface->maxs))
5829                         {
5830                                 surface->collisionmarkframe = markframe;
5831                                 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);
5832                         }
5833                 }
5834         }
5835 }
5836
5837 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)
5838 {
5839         int i;
5840         float segmentmins[3], segmentmaxs[3];
5841         static int markframe = 0;
5842         msurface_t *surface;
5843         q3mbrush_t *brush;
5844         memset(trace, 0, sizeof(*trace));
5845         trace->fraction = 1;
5846         trace->realfraction = 1;
5847         trace->hitsupercontentsmask = hitsupercontentsmask;
5848         if (mod_q3bsp_optimizedtraceline.integer && VectorLength2(boxmins) + VectorLength2(boxmaxs) == 0)
5849         {
5850                 if (VectorCompare(start, end))
5851                 {
5852                         // point trace
5853                         if (model->brush.submodel)
5854                         {
5855                                 for (i = 0, brush = model->brush.data_brushes + model->firstmodelbrush;i < model->nummodelbrushes;i++, brush++)
5856                                         if (brush->colbrushf)
5857                                                 Collision_TracePointBrushFloat(trace, start, brush->colbrushf);
5858                         }
5859                         else
5860                                 Mod_Q3BSP_TracePoint_RecursiveBSPNode(trace, model, model->brush.data_nodes, start, ++markframe);
5861                 }
5862                 else
5863                 {
5864                         // line trace
5865                         segmentmins[0] = min(start[0], end[0]) - 1;
5866                         segmentmins[1] = min(start[1], end[1]) - 1;
5867                         segmentmins[2] = min(start[2], end[2]) - 1;
5868                         segmentmaxs[0] = max(start[0], end[0]) + 1;
5869                         segmentmaxs[1] = max(start[1], end[1]) + 1;
5870                         segmentmaxs[2] = max(start[2], end[2]) + 1;
5871                         if (model->brush.submodel)
5872                         {
5873                                 for (i = 0, brush = model->brush.data_brushes + model->firstmodelbrush;i < model->nummodelbrushes;i++, brush++)
5874                                         if (brush->colbrushf)
5875                                                 Collision_TraceLineBrushFloat(trace, start, end, brush->colbrushf, brush->colbrushf);
5876                                 if (mod_q3bsp_curves_collisions.integer)
5877                                         for (i = 0, surface = model->data_surfaces + model->firstmodelsurface;i < model->nummodelsurfaces;i++, surface++)
5878                                                 if (surface->num_collisiontriangles)
5879                                                         Collision_TraceLineTriangleMeshFloat(trace, start, end, surface->num_collisiontriangles, surface->data_collisionelement3i, surface->data_collisionvertex3f, surface->texture->supercontents, surface->texture->surfaceflags, surface->texture, segmentmins, segmentmaxs);
5880                         }
5881                         else
5882                                 Mod_Q3BSP_TraceLine_RecursiveBSPNode(trace, model, model->brush.data_nodes, start, end, 0, 1, start, end, ++markframe, segmentmins, segmentmaxs);
5883                 }
5884         }
5885         else
5886         {
5887                 // box trace, performed as brush trace
5888                 colbrushf_t *thisbrush_start, *thisbrush_end;
5889                 vec3_t boxstartmins, boxstartmaxs, boxendmins, boxendmaxs;
5890                 segmentmins[0] = min(start[0], end[0]) + boxmins[0] - 1;
5891                 segmentmins[1] = min(start[1], end[1]) + boxmins[1] - 1;
5892                 segmentmins[2] = min(start[2], end[2]) + boxmins[2] - 1;
5893                 segmentmaxs[0] = max(start[0], end[0]) + boxmaxs[0] + 1;
5894                 segmentmaxs[1] = max(start[1], end[1]) + boxmaxs[1] + 1;
5895                 segmentmaxs[2] = max(start[2], end[2]) + boxmaxs[2] + 1;
5896                 VectorAdd(start, boxmins, boxstartmins);
5897                 VectorAdd(start, boxmaxs, boxstartmaxs);
5898                 VectorAdd(end, boxmins, boxendmins);
5899                 VectorAdd(end, boxmaxs, boxendmaxs);
5900                 thisbrush_start = Collision_BrushForBox(&identitymatrix, boxstartmins, boxstartmaxs, 0, 0, NULL);
5901                 thisbrush_end = Collision_BrushForBox(&identitymatrix, boxendmins, boxendmaxs, 0, 0, NULL);
5902                 if (model->brush.submodel)
5903                 {
5904                         for (i = 0, brush = model->brush.data_brushes + model->firstmodelbrush;i < model->nummodelbrushes;i++, brush++)
5905                                 if (brush->colbrushf)
5906                                         Collision_TraceBrushBrushFloat(trace, thisbrush_start, thisbrush_end, brush->colbrushf, brush->colbrushf);
5907                         if (mod_q3bsp_curves_collisions.integer)
5908                                 for (i = 0, surface = model->data_surfaces + model->firstmodelsurface;i < model->nummodelsurfaces;i++, surface++)
5909                                         if (surface->num_collisiontriangles)
5910                                                 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);
5911                 }
5912                 else
5913                         Mod_Q3BSP_TraceBrush_RecursiveBSPNode(trace, model, model->brush.data_nodes, thisbrush_start, thisbrush_end, ++markframe, segmentmins, segmentmaxs);
5914         }
5915 }
5916
5917 static int Mod_Q3BSP_SuperContentsFromNativeContents(model_t *model, int nativecontents)
5918 {
5919         int supercontents = 0;
5920         if (nativecontents & CONTENTSQ3_SOLID)
5921                 supercontents |= SUPERCONTENTS_SOLID;
5922         if (nativecontents & CONTENTSQ3_WATER)
5923                 supercontents |= SUPERCONTENTS_WATER;
5924         if (nativecontents & CONTENTSQ3_SLIME)
5925                 supercontents |= SUPERCONTENTS_SLIME;
5926         if (nativecontents & CONTENTSQ3_LAVA)
5927                 supercontents |= SUPERCONTENTS_LAVA;
5928         if (nativecontents & CONTENTSQ3_BODY)
5929                 supercontents |= SUPERCONTENTS_BODY;
5930         if (nativecontents & CONTENTSQ3_CORPSE)
5931                 supercontents |= SUPERCONTENTS_CORPSE;
5932         if (nativecontents & CONTENTSQ3_NODROP)
5933                 supercontents |= SUPERCONTENTS_NODROP;
5934         if (nativecontents & CONTENTSQ3_PLAYERCLIP)
5935                 supercontents |= SUPERCONTENTS_PLAYERCLIP;
5936         if (nativecontents & CONTENTSQ3_MONSTERCLIP)
5937                 supercontents |= SUPERCONTENTS_MONSTERCLIP;
5938         if (nativecontents & CONTENTSQ3_DONOTENTER)
5939                 supercontents |= SUPERCONTENTS_DONOTENTER;
5940         return supercontents;
5941 }
5942
5943 static int Mod_Q3BSP_NativeContentsFromSuperContents(model_t *model, int supercontents)
5944 {
5945         int nativecontents = 0;
5946         if (supercontents & SUPERCONTENTS_SOLID)
5947                 nativecontents |= CONTENTSQ3_SOLID;
5948         if (supercontents & SUPERCONTENTS_WATER)
5949                 nativecontents |= CONTENTSQ3_WATER;
5950         if (supercontents & SUPERCONTENTS_SLIME)
5951                 nativecontents |= CONTENTSQ3_SLIME;
5952         if (supercontents & SUPERCONTENTS_LAVA)
5953                 nativecontents |= CONTENTSQ3_LAVA;
5954         if (supercontents & SUPERCONTENTS_BODY)
5955                 nativecontents |= CONTENTSQ3_BODY;
5956         if (supercontents & SUPERCONTENTS_CORPSE)
5957                 nativecontents |= CONTENTSQ3_CORPSE;
5958         if (supercontents & SUPERCONTENTS_NODROP)
5959                 nativecontents |= CONTENTSQ3_NODROP;
5960         if (supercontents & SUPERCONTENTS_PLAYERCLIP)
5961                 nativecontents |= CONTENTSQ3_PLAYERCLIP;
5962         if (supercontents & SUPERCONTENTS_MONSTERCLIP)
5963                 nativecontents |= CONTENTSQ3_MONSTERCLIP;
5964         if (supercontents & SUPERCONTENTS_DONOTENTER)
5965                 nativecontents |= CONTENTSQ3_DONOTENTER;
5966         return nativecontents;
5967 }
5968
5969 void Mod_Q3BSP_RecursiveFindNumLeafs(mnode_t *node)
5970 {
5971         int numleafs;
5972         while (node->plane)
5973         {
5974                 Mod_Q3BSP_RecursiveFindNumLeafs(node->children[0]);
5975                 node = node->children[1];
5976         }
5977         numleafs = ((mleaf_t *)node - loadmodel->brush.data_leafs) + 1;
5978         if (loadmodel->brush.num_leafs < numleafs)
5979                 loadmodel->brush.num_leafs = numleafs;
5980 }
5981
5982 void Mod_Q3BSP_Load(model_t *mod, void *buffer, void *bufferend)
5983 {
5984         int i, j, numshadowmeshtriangles;
5985         q3dheader_t *header;
5986         float corner[3], yawradius, modelradius;
5987         msurface_t *surface;
5988
5989         mod->type = mod_brushq3;
5990         mod->numframes = 2; // although alternate textures are not supported it is annoying to complain about no such frame 1
5991         mod->numskins = 1;
5992
5993         header = (q3dheader_t *)buffer;
5994
5995         i = LittleLong(header->version);
5996         if (i != Q3BSPVERSION)
5997                 Host_Error("Mod_Q3BSP_Load: %s has wrong version number (%i, should be %i)", mod->name, i, Q3BSPVERSION);
5998         mod->brush.ishlbsp = false;
5999         mod->brush.ismcbsp = false;
6000         if (loadmodel->isworldmodel)
6001         {
6002                 Cvar_SetValue("halflifebsp", mod->brush.ishlbsp);
6003                 Cvar_SetValue("mcbsp", mod->brush.ismcbsp);
6004         }
6005
6006         mod->soundfromcenter = true;
6007         mod->TraceBox = Mod_Q3BSP_TraceBox;
6008         mod->brush.TraceLineOfSight = Mod_Q1BSP_TraceLineOfSight;
6009         mod->brush.SuperContentsFromNativeContents = Mod_Q3BSP_SuperContentsFromNativeContents;
6010         mod->brush.NativeContentsFromSuperContents = Mod_Q3BSP_NativeContentsFromSuperContents;
6011         mod->brush.GetPVS = Mod_Q1BSP_GetPVS;
6012         mod->brush.FatPVS = Mod_Q1BSP_FatPVS;
6013         mod->brush.BoxTouchingPVS = Mod_Q1BSP_BoxTouchingPVS;
6014         mod->brush.BoxTouchingLeafPVS = Mod_Q1BSP_BoxTouchingLeafPVS;
6015         mod->brush.BoxTouchingVisibleLeafs = Mod_Q1BSP_BoxTouchingVisibleLeafs;
6016         mod->brush.FindBoxClusters = Mod_Q1BSP_FindBoxClusters;
6017         mod->brush.LightPoint = Mod_Q3BSP_LightPoint;
6018         mod->brush.FindNonSolidLocation = Mod_Q1BSP_FindNonSolidLocation;
6019         mod->brush.PointInLeaf = Mod_Q1BSP_PointInLeaf;
6020         mod->Draw = R_Q1BSP_Draw;
6021         mod->DrawDepth = R_Q1BSP_DrawDepth;
6022         mod->GetLightInfo = R_Q1BSP_GetLightInfo;
6023         mod->CompileShadowVolume = R_Q1BSP_CompileShadowVolume;
6024         mod->DrawShadowVolume = R_Q1BSP_DrawShadowVolume;
6025         mod->DrawLight = R_Q1BSP_DrawLight;
6026
6027         mod_base = (unsigned char *)header;
6028
6029         // swap all the lumps
6030         header->ident = LittleLong(header->ident);
6031         header->version = LittleLong(header->version);
6032         for (i = 0;i < Q3HEADER_LUMPS;i++)
6033         {
6034                 header->lumps[i].fileofs = LittleLong(header->lumps[i].fileofs);
6035                 header->lumps[i].filelen = LittleLong(header->lumps[i].filelen);
6036         }
6037
6038         mod->brush.qw_md4sum = 0;
6039         mod->brush.qw_md4sum2 = 0;
6040         for (i = 0;i < Q3HEADER_LUMPS;i++)
6041         {
6042                 if (i == Q3LUMP_ENTITIES)
6043                         continue;
6044                 mod->brush.qw_md4sum ^= Com_BlockChecksum(mod_base + header->lumps[i].fileofs, header->lumps[i].filelen);
6045                 if (i == Q3LUMP_PVS || i == Q3LUMP_LEAFS || i == Q3LUMP_NODES)
6046                         continue;
6047                 mod->brush.qw_md4sum2 ^= Com_BlockChecksum(mod_base + header->lumps[i].fileofs, header->lumps[i].filelen);
6048         }
6049
6050         Mod_Q3BSP_LoadEntities(&header->lumps[Q3LUMP_ENTITIES]);
6051         Mod_Q3BSP_LoadTextures(&header->lumps[Q3LUMP_TEXTURES]);
6052         Mod_Q3BSP_LoadPlanes(&header->lumps[Q3LUMP_PLANES]);
6053         Mod_Q3BSP_LoadBrushSides(&header->lumps[Q3LUMP_BRUSHSIDES]);
6054         Mod_Q3BSP_LoadBrushes(&header->lumps[Q3LUMP_BRUSHES]);
6055         Mod_Q3BSP_LoadEffects(&header->lumps[Q3LUMP_EFFECTS]);
6056         Mod_Q3BSP_LoadVertices(&header->lumps[Q3LUMP_VERTICES]);
6057         Mod_Q3BSP_LoadTriangles(&header->lumps[Q3LUMP_TRIANGLES]);
6058         Mod_Q3BSP_LoadLightmaps(&header->lumps[Q3LUMP_LIGHTMAPS], &header->lumps[Q3LUMP_FACES]);
6059         Mod_Q3BSP_LoadFaces(&header->lumps[Q3LUMP_FACES]);
6060         Mod_Q3BSP_LoadModels(&header->lumps[Q3LUMP_MODELS]);
6061         Mod_Q3BSP_LoadLeafBrushes(&header->lumps[Q3LUMP_LEAFBRUSHES]);
6062         Mod_Q3BSP_LoadLeafFaces(&header->lumps[Q3LUMP_LEAFFACES]);
6063         Mod_Q3BSP_LoadLeafs(&header->lumps[Q3LUMP_LEAFS]);
6064         Mod_Q3BSP_LoadNodes(&header->lumps[Q3LUMP_NODES]);
6065         Mod_Q3BSP_LoadLightGrid(&header->lumps[Q3LUMP_LIGHTGRID]);
6066         Mod_Q3BSP_LoadPVS(&header->lumps[Q3LUMP_PVS]);
6067         loadmodel->brush.numsubmodels = loadmodel->brushq3.num_models;
6068
6069         // the MakePortals code works fine on the q3bsp data as well
6070         Mod_Q1BSP_MakePortals();
6071
6072         // FIXME: shader alpha should replace r_wateralpha support in q3bsp
6073         loadmodel->brush.supportwateralpha = true;
6074
6075         // make a single combined shadow mesh to allow optimized shadow volume creation
6076         numshadowmeshtriangles = 0;
6077         for (j = 0, surface = loadmodel->data_surfaces;j < loadmodel->num_surfaces;j++, surface++)
6078         {
6079                 surface->num_firstshadowmeshtriangle = numshadowmeshtriangles;
6080                 numshadowmeshtriangles += surface->num_triangles;
6081         }
6082         loadmodel->brush.shadowmesh = Mod_ShadowMesh_Begin(loadmodel->mempool, numshadowmeshtriangles * 3, numshadowmeshtriangles, NULL, NULL, NULL, false, false, true);
6083         for (j = 0, surface = loadmodel->data_surfaces;j < loadmodel->num_surfaces;j++, surface++)
6084                 if (surface->num_triangles > 0)
6085                         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));
6086         loadmodel->brush.shadowmesh = Mod_ShadowMesh_Finish(loadmodel->mempool, loadmodel->brush.shadowmesh, false, true, false);
6087         Mod_BuildTriangleNeighbors(loadmodel->brush.shadowmesh->neighbor3i, loadmodel->brush.shadowmesh->element3i, loadmodel->brush.shadowmesh->numtriangles);
6088
6089         loadmodel->brush.num_leafs = 0;
6090         Mod_Q3BSP_RecursiveFindNumLeafs(loadmodel->brush.data_nodes);
6091
6092         if (loadmodel->isworldmodel)
6093         {
6094                 // clear out any stale submodels or worldmodels lying around
6095                 // if we did this clear before now, an error might abort loading and
6096                 // leave things in a bad state
6097                 Mod_RemoveStaleWorldModels(loadmodel);
6098         }
6099
6100         mod = loadmodel;
6101         for (i = 0;i < loadmodel->brush.numsubmodels;i++)
6102         {
6103                 if (i > 0)
6104                 {
6105                         char name[10];
6106                         // LordHavoc: only register submodels if it is the world
6107                         // (prevents external bsp models from replacing world submodels with
6108                         //  their own)
6109                         if (!loadmodel->isworldmodel)
6110                                 continue;
6111                         // duplicate the basic information
6112                         sprintf(name, "*%i", i);
6113                         mod = Mod_FindName(name);
6114                         *mod = *loadmodel;
6115                         strlcpy(mod->name, name, sizeof(mod->name));
6116                         // textures and memory belong to the main model
6117                         mod->texturepool = NULL;
6118                         mod->mempool = NULL;
6119                         mod->brush.TraceLineOfSight = NULL;
6120                         mod->brush.GetPVS = NULL;
6121                         mod->brush.FatPVS = NULL;
6122                         mod->brush.BoxTouchingPVS = NULL;
6123                         mod->brush.BoxTouchingLeafPVS = NULL;
6124                         mod->brush.BoxTouchingVisibleLeafs = NULL;
6125                         mod->brush.FindBoxClusters = NULL;
6126                         mod->brush.LightPoint = NULL;
6127                         mod->brush.FindNonSolidLocation = Mod_Q1BSP_FindNonSolidLocation;
6128                 }
6129                 mod->brush.submodel = i;
6130
6131                 // make the model surface list (used by shadowing/lighting)
6132                 mod->firstmodelsurface = mod->brushq3.data_models[i].firstface;
6133                 mod->nummodelsurfaces = mod->brushq3.data_models[i].numfaces;
6134                 mod->firstmodelbrush = mod->brushq3.data_models[i].firstbrush;
6135                 mod->nummodelbrushes = mod->brushq3.data_models[i].numbrushes;
6136                 mod->surfacelist = (int *)Mem_Alloc(loadmodel->mempool, mod->nummodelsurfaces * sizeof(*mod->surfacelist));
6137                 for (j = 0;j < mod->nummodelsurfaces;j++)
6138                         mod->surfacelist[j] = mod->firstmodelsurface + j;
6139
6140                 VectorCopy(mod->brushq3.data_models[i].mins, mod->normalmins);
6141                 VectorCopy(mod->brushq3.data_models[i].maxs, mod->normalmaxs);
6142                 corner[0] = max(fabs(mod->normalmins[0]), fabs(mod->normalmaxs[0]));
6143                 corner[1] = max(fabs(mod->normalmins[1]), fabs(mod->normalmaxs[1]));
6144                 corner[2] = max(fabs(mod->normalmins[2]), fabs(mod->normalmaxs[2]));
6145                 modelradius = sqrt(corner[0]*corner[0]+corner[1]*corner[1]+corner[2]*corner[2]);
6146                 yawradius = sqrt(corner[0]*corner[0]+corner[1]*corner[1]);
6147                 mod->rotatedmins[0] = mod->rotatedmins[1] = mod->rotatedmins[2] = -modelradius;
6148                 mod->rotatedmaxs[0] = mod->rotatedmaxs[1] = mod->rotatedmaxs[2] = modelradius;
6149                 mod->yawmaxs[0] = mod->yawmaxs[1] = yawradius;
6150                 mod->yawmins[0] = mod->yawmins[1] = -yawradius;
6151                 mod->yawmins[2] = mod->normalmins[2];
6152                 mod->yawmaxs[2] = mod->normalmaxs[2];
6153                 mod->radius = modelradius;
6154                 mod->radius2 = modelradius * modelradius;
6155
6156                 for (j = 0;j < mod->nummodelsurfaces;j++)
6157                         if (mod->data_surfaces[j + mod->firstmodelsurface].texture->surfaceflags & Q3SURFACEFLAG_SKY)
6158                                 break;
6159                 if (j < mod->nummodelsurfaces)
6160                         mod->DrawSky = R_Q1BSP_DrawSky;
6161                 else
6162                         mod->DrawSky = NULL;
6163         }
6164 }
6165
6166 void Mod_IBSP_Load(model_t *mod, void *buffer, void *bufferend)
6167 {
6168         int i = LittleLong(((int *)buffer)[1]);
6169         if (i == Q3BSPVERSION)
6170                 Mod_Q3BSP_Load(mod,buffer, bufferend);
6171         else if (i == Q2BSPVERSION)
6172                 Mod_Q2BSP_Load(mod,buffer, bufferend);
6173         else
6174                 Host_Error("Mod_IBSP_Load: unknown/unsupported version %i", i);
6175 }
6176
6177 void Mod_MAP_Load(model_t *mod, void *buffer, void *bufferend)
6178 {
6179         Host_Error("Mod_MAP_Load: not yet implemented");
6180 }
6181
6182 qboolean Mod_CanSeeBox_Trace(int numsamples, float t, model_t *model, vec3_t eye, vec3_t minsX, vec3_t maxsX)
6183 {
6184         // we already have done PVS culling at this point...
6185         // so we don't need to do it again.
6186
6187         int i;
6188         vec3_t testorigin, mins, maxs;
6189
6190         testorigin[0] = (minsX[0] + maxsX[0]) * 0.5;
6191         testorigin[1] = (minsX[1] + maxsX[1]) * 0.5;
6192         testorigin[2] = (minsX[2] + maxsX[2]) * 0.5;
6193
6194         if(model->brush.TraceLineOfSight(model, eye, testorigin))
6195                 return 1;
6196
6197         // expand the box a little
6198         mins[0] = (t+1) * minsX[0] - t * maxsX[0];
6199         maxs[0] = (t+1) * maxsX[0] - t * minsX[0];
6200         mins[1] = (t+1) * minsX[1] - t * maxsX[1];
6201         maxs[1] = (t+1) * maxsX[1] - t * minsX[1];
6202         mins[2] = (t+1) * minsX[2] - t * maxsX[2];
6203         maxs[2] = (t+1) * maxsX[2] - t * minsX[2];
6204
6205         for(i = 0; i != numsamples; ++i)
6206         {
6207                 testorigin[0] = lhrandom(mins[0], maxs[0]);
6208                 testorigin[1] = lhrandom(mins[1], maxs[1]);
6209                 testorigin[2] = lhrandom(mins[2], maxs[2]);
6210
6211                 if(model->brush.TraceLineOfSight(model, eye, testorigin))
6212                         return 1;
6213         }
6214
6215         return 0;
6216 }
6217