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                                                 Con_DPrintf("%s: could not load texture \"%s\" (frame %i) for shader \"%s\"\n", loadmodel->name, shader->primarylayer->texturename[j], j, out->name);
4574                         }
4575                         if (shader->backgroundlayer)
4576                         {
4577                                 int j;
4578                                 out->backgroundnumskinframes = shader->backgroundlayer->numframes;
4579                                 out->backgroundskinframerate = shader->backgroundlayer->framerate;
4580                                 for (j = 0;j < shader->backgroundlayer->numframes;j++)
4581                                 {
4582                                         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)))
4583                                         {
4584                                                 Con_DPrintf("%s: could not load texture \"%s\" (frame %i) for shader \"%s\"\n", loadmodel->name, shader->backgroundlayer->texturename[j], j, out->name);
4585                                                 out->backgroundskinframes[j] = R_SkinFrame_LoadMissing();
4586                                         }
4587                                 }
4588                         }
4589                 }
4590                 else if (!strcmp(out->name, "noshader"))
4591                         out->surfaceparms = 0;
4592                 else
4593                 {
4594                         c++;
4595                         Con_DPrintf("%s: No shader found for texture \"%s\"\n", loadmodel->name, out->name);
4596                         out->surfaceparms = 0;
4597                         if (out->surfaceflags & Q3SURFACEFLAG_NODRAW)
4598                                 out->basematerialflags |= MATERIALFLAG_NODRAW | MATERIALFLAG_NOSHADOW;
4599                         else if (out->surfaceflags & Q3SURFACEFLAG_SKY)
4600                                 out->basematerialflags |= MATERIALFLAG_SKY | MATERIALFLAG_NOSHADOW;
4601                         else
4602                                 out->basematerialflags |= MATERIALFLAG_WALL;
4603                         // these are defaults
4604                         //if (!strncmp(out->name, "textures/skies/", 15))
4605                         //      out->surfaceparms |= Q3SURFACEPARM_SKY;
4606                         //if (!strcmp(out->name, "caulk") || !strcmp(out->name, "common/caulk") || !strcmp(out->name, "textures/common/caulk")
4607                         // || !strcmp(out->name, "nodraw") || !strcmp(out->name, "common/nodraw") || !strcmp(out->name, "textures/common/nodraw"))
4608                         //      out->surfaceparms |= Q3SURFACEPARM_NODRAW;
4609                         //if (R_TextureHasAlpha(out->skinframes[0].base))
4610                         //      out->surfaceparms |= Q3SURFACEPARM_TRANS;
4611                         out->numskinframes = 1;
4612                         if (!(out->skinframes[0] = R_SkinFrame_LoadExternal(out->name, TEXF_MIPMAP | TEXF_ALPHA | TEXF_PRECACHE | (r_picmipworld.integer ? TEXF_PICMIP : 0), false)))
4613                                 Con_DPrintf("%s: could not load texture for missing shader \"%s\"\n", loadmodel->name, out->name);
4614                 }
4615                 // init the animation variables
4616                 out->currentframe = out;
4617                 if (out->numskinframes < 1)
4618                         out->numskinframes = 1;
4619                 if (!out->skinframes[0])
4620                         out->skinframes[0] = R_SkinFrame_LoadMissing();
4621                 out->currentskinframe = out->skinframes[0];
4622                 out->backgroundcurrentskinframe = out->backgroundskinframes[0];
4623         }
4624         if (c)
4625                 Con_DPrintf("%s: %i textures missing shaders\n", loadmodel->name, c);
4626 }
4627
4628 static void Mod_Q3BSP_LoadPlanes(lump_t *l)
4629 {
4630         q3dplane_t *in;
4631         mplane_t *out;
4632         int i, count;
4633
4634         in = (q3dplane_t *)(mod_base + l->fileofs);
4635         if (l->filelen % sizeof(*in))
4636                 Host_Error("Mod_Q3BSP_LoadPlanes: funny lump size in %s",loadmodel->name);
4637         count = l->filelen / sizeof(*in);
4638         out = (mplane_t *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
4639
4640         loadmodel->brush.data_planes = out;
4641         loadmodel->brush.num_planes = count;
4642
4643         for (i = 0;i < count;i++, in++, out++)
4644         {
4645                 out->normal[0] = LittleFloat(in->normal[0]);
4646                 out->normal[1] = LittleFloat(in->normal[1]);
4647                 out->normal[2] = LittleFloat(in->normal[2]);
4648                 out->dist = LittleFloat(in->dist);
4649                 PlaneClassify(out);
4650         }
4651 }
4652
4653 static void Mod_Q3BSP_LoadBrushSides(lump_t *l)
4654 {
4655         q3dbrushside_t *in;
4656         q3mbrushside_t *out;
4657         int i, n, count;
4658
4659         in = (q3dbrushside_t *)(mod_base + l->fileofs);
4660         if (l->filelen % sizeof(*in))
4661                 Host_Error("Mod_Q3BSP_LoadBrushSides: funny lump size in %s",loadmodel->name);
4662         count = l->filelen / sizeof(*in);
4663         out = (q3mbrushside_t *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
4664
4665         loadmodel->brush.data_brushsides = out;
4666         loadmodel->brush.num_brushsides = count;
4667
4668         for (i = 0;i < count;i++, in++, out++)
4669         {
4670                 n = LittleLong(in->planeindex);
4671                 if (n < 0 || n >= loadmodel->brush.num_planes)
4672                         Host_Error("Mod_Q3BSP_LoadBrushSides: invalid planeindex %i (%i planes)", n, loadmodel->brush.num_planes);
4673                 out->plane = loadmodel->brush.data_planes + n;
4674                 n = LittleLong(in->textureindex);
4675                 if (n < 0 || n >= loadmodel->num_textures)
4676                         Host_Error("Mod_Q3BSP_LoadBrushSides: invalid textureindex %i (%i textures)", n, loadmodel->num_textures);
4677                 out->texture = loadmodel->data_textures + n;
4678         }
4679 }
4680
4681 static void Mod_Q3BSP_LoadBrushes(lump_t *l)
4682 {
4683         q3dbrush_t *in;
4684         q3mbrush_t *out;
4685         int i, j, n, c, count, maxplanes;
4686         colplanef_t *planes;
4687
4688         in = (q3dbrush_t *)(mod_base + l->fileofs);
4689         if (l->filelen % sizeof(*in))
4690                 Host_Error("Mod_Q3BSP_LoadBrushes: funny lump size in %s",loadmodel->name);
4691         count = l->filelen / sizeof(*in);
4692         out = (q3mbrush_t *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
4693
4694         loadmodel->brush.data_brushes = out;
4695         loadmodel->brush.num_brushes = count;
4696
4697         maxplanes = 0;
4698         planes = NULL;
4699
4700         for (i = 0;i < count;i++, in++, out++)
4701         {
4702                 n = LittleLong(in->firstbrushside);
4703                 c = LittleLong(in->numbrushsides);
4704                 if (n < 0 || n + c > loadmodel->brush.num_brushsides)
4705                         Host_Error("Mod_Q3BSP_LoadBrushes: invalid brushside range %i : %i (%i brushsides)", n, n + c, loadmodel->brush.num_brushsides);
4706                 out->firstbrushside = loadmodel->brush.data_brushsides + n;
4707                 out->numbrushsides = c;
4708                 n = LittleLong(in->textureindex);
4709                 if (n < 0 || n >= loadmodel->num_textures)
4710                         Host_Error("Mod_Q3BSP_LoadBrushes: invalid textureindex %i (%i textures)", n, loadmodel->num_textures);
4711                 out->texture = loadmodel->data_textures + n;
4712
4713                 // make a list of mplane_t structs to construct a colbrush from
4714                 if (maxplanes < out->numbrushsides)
4715                 {
4716                         maxplanes = out->numbrushsides;
4717                         if (planes)
4718                                 Mem_Free(planes);
4719                         planes = (colplanef_t *)Mem_Alloc(tempmempool, sizeof(colplanef_t) * maxplanes);
4720                 }
4721                 for (j = 0;j < out->numbrushsides;j++)
4722                 {
4723                         VectorCopy(out->firstbrushside[j].plane->normal, planes[j].normal);
4724                         planes[j].dist = out->firstbrushside[j].plane->dist;
4725                         planes[j].q3surfaceflags = out->firstbrushside[j].texture->surfaceflags;
4726                         planes[j].texture = out->firstbrushside[j].texture;
4727                 }
4728                 // make the colbrush from the planes
4729                 out->colbrushf = Collision_NewBrushFromPlanes(loadmodel->mempool, out->numbrushsides, planes, out->texture->supercontents);
4730         }
4731         if (planes)
4732                 Mem_Free(planes);
4733 }
4734
4735 static void Mod_Q3BSP_LoadEffects(lump_t *l)
4736 {
4737         q3deffect_t *in;
4738         q3deffect_t *out;
4739         int i, n, count;
4740
4741         in = (q3deffect_t *)(mod_base + l->fileofs);
4742         if (l->filelen % sizeof(*in))
4743                 Host_Error("Mod_Q3BSP_LoadEffects: funny lump size in %s",loadmodel->name);
4744         count = l->filelen / sizeof(*in);
4745         out = (q3deffect_t *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
4746
4747         loadmodel->brushq3.data_effects = out;
4748         loadmodel->brushq3.num_effects = count;
4749
4750         for (i = 0;i < count;i++, in++, out++)
4751         {
4752                 strlcpy (out->shadername, in->shadername, sizeof (out->shadername));
4753                 n = LittleLong(in->brushindex);
4754                 if (n >= loadmodel->brush.num_brushes)
4755                 {
4756                         Con_Printf("Mod_Q3BSP_LoadEffects: invalid brushindex %i (%i brushes), setting to -1\n", n, loadmodel->brush.num_brushes);
4757                         n = -1;
4758                 }
4759                 out->brushindex = n;
4760                 out->unknown = LittleLong(in->unknown);
4761         }
4762 }
4763
4764 static void Mod_Q3BSP_LoadVertices(lump_t *l)
4765 {
4766         q3dvertex_t *in;
4767         int i, count;
4768
4769         in = (q3dvertex_t *)(mod_base + l->fileofs);
4770         if (l->filelen % sizeof(*in))
4771                 Host_Error("Mod_Q3BSP_LoadVertices: funny lump size in %s",loadmodel->name);
4772         loadmodel->brushq3.num_vertices = count = l->filelen / sizeof(*in);
4773         loadmodel->brushq3.data_vertex3f = (float *)Mem_Alloc(loadmodel->mempool, count * (sizeof(float) * (3 + 3 + 2 + 2 + 4)));
4774         loadmodel->brushq3.data_normal3f = loadmodel->brushq3.data_vertex3f + count * 3;
4775         loadmodel->brushq3.data_texcoordtexture2f = loadmodel->brushq3.data_normal3f + count * 3;
4776         loadmodel->brushq3.data_texcoordlightmap2f = loadmodel->brushq3.data_texcoordtexture2f + count * 2;
4777         loadmodel->brushq3.data_color4f = loadmodel->brushq3.data_texcoordlightmap2f + count * 2;
4778
4779         for (i = 0;i < count;i++, in++)
4780         {
4781                 loadmodel->brushq3.data_vertex3f[i * 3 + 0] = LittleFloat(in->origin3f[0]);
4782                 loadmodel->brushq3.data_vertex3f[i * 3 + 1] = LittleFloat(in->origin3f[1]);
4783                 loadmodel->brushq3.data_vertex3f[i * 3 + 2] = LittleFloat(in->origin3f[2]);
4784                 loadmodel->brushq3.data_normal3f[i * 3 + 0] = LittleFloat(in->normal3f[0]);
4785                 loadmodel->brushq3.data_normal3f[i * 3 + 1] = LittleFloat(in->normal3f[1]);
4786                 loadmodel->brushq3.data_normal3f[i * 3 + 2] = LittleFloat(in->normal3f[2]);
4787                 loadmodel->brushq3.data_texcoordtexture2f[i * 2 + 0] = LittleFloat(in->texcoord2f[0]);
4788                 loadmodel->brushq3.data_texcoordtexture2f[i * 2 + 1] = LittleFloat(in->texcoord2f[1]);
4789                 loadmodel->brushq3.data_texcoordlightmap2f[i * 2 + 0] = LittleFloat(in->lightmap2f[0]);
4790                 loadmodel->brushq3.data_texcoordlightmap2f[i * 2 + 1] = LittleFloat(in->lightmap2f[1]);
4791                 // svector/tvector are calculated later in face loading
4792                 loadmodel->brushq3.data_color4f[i * 4 + 0] = in->color4ub[0] * (1.0f / 255.0f);
4793                 loadmodel->brushq3.data_color4f[i * 4 + 1] = in->color4ub[1] * (1.0f / 255.0f);
4794                 loadmodel->brushq3.data_color4f[i * 4 + 2] = in->color4ub[2] * (1.0f / 255.0f);
4795                 loadmodel->brushq3.data_color4f[i * 4 + 3] = in->color4ub[3] * (1.0f / 255.0f);
4796         }
4797 }
4798
4799 static void Mod_Q3BSP_LoadTriangles(lump_t *l)
4800 {
4801         int *in;
4802         int *out;
4803         int i, count;
4804
4805         in = (int *)(mod_base + l->fileofs);
4806         if (l->filelen % sizeof(int[3]))
4807                 Host_Error("Mod_Q3BSP_LoadTriangles: funny lump size in %s",loadmodel->name);
4808         count = l->filelen / sizeof(*in);
4809         out = (int *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
4810
4811         loadmodel->brushq3.num_triangles = count / 3;
4812         loadmodel->brushq3.data_element3i = out;
4813
4814         for (i = 0;i < count;i++, in++, out++)
4815         {
4816                 *out = LittleLong(*in);
4817                 if (*out < 0 || *out >= loadmodel->brushq3.num_vertices)
4818                 {
4819                         Con_Printf("Mod_Q3BSP_LoadTriangles: invalid vertexindex %i (%i vertices), setting to 0\n", *out, loadmodel->brushq3.num_vertices);
4820                         *out = 0;
4821                 }
4822         }
4823 }
4824
4825 static void Mod_Q3BSP_LoadLightmaps(lump_t *l, lump_t *faceslump)
4826 {
4827         q3dlightmap_t *in;
4828         int i, j, count, power, power2, mask, endlightmap;
4829         unsigned char *c;
4830
4831         if (!l->filelen)
4832                 return;
4833         if (cls.state == ca_dedicated)
4834                 return;
4835         in = (q3dlightmap_t *)(mod_base + l->fileofs);
4836         if (l->filelen % sizeof(*in))
4837                 Host_Error("Mod_Q3BSP_LoadLightmaps: funny lump size in %s",loadmodel->name);
4838         count = l->filelen / sizeof(*in);
4839         loadmodel->brushq3.num_originallightmaps = count;
4840
4841         // now check the surfaces to see if any of them index an odd numbered
4842         // lightmap, if so this is not a deluxemapped bsp file
4843         //
4844         // also check what lightmaps are actually used, because q3map2 sometimes
4845         // (always?) makes an unused one at the end, which
4846         // q3map2 sometimes (or always?) makes a second blank lightmap for no
4847         // reason when only one lightmap is used, which can throw off the
4848         // deluxemapping detection method, so check 2-lightmap bsp's specifically
4849         // to see if the second lightmap is blank, if so it is not deluxemapped.
4850         loadmodel->brushq3.deluxemapping = !(count & 1);
4851         loadmodel->brushq3.deluxemapping_modelspace = true;
4852         endlightmap = 0;
4853         if (loadmodel->brushq3.deluxemapping)
4854         {
4855                 int facecount = faceslump->filelen / sizeof(q3dface_t);
4856                 q3dface_t *faces = (q3dface_t *)(mod_base + faceslump->fileofs);
4857                 for (i = 0;i < facecount;i++)
4858                 {
4859                         j = LittleLong(faces[i].lightmapindex);
4860                         if (j >= 0)
4861                         {
4862                                 endlightmap = max(endlightmap, j + 1);
4863                                 if ((j & 1) || j + 1 >= count)
4864                                 {
4865                                         loadmodel->brushq3.deluxemapping = false;
4866                                         break;
4867                                 }
4868                         }
4869                 }
4870         }
4871         if (endlightmap < 2)
4872                 loadmodel->brushq3.deluxemapping = false;
4873
4874         // q3map2 sometimes (or always?) makes a second blank lightmap for no
4875         // reason when only one lightmap is used, which can throw off the
4876         // deluxemapping detection method, so check 2-lightmap bsp's specifically
4877         // to see if the second lightmap is blank, if so it is not deluxemapped.
4878         if (endlightmap == 1 && count == 2)
4879         {
4880                 c = in[1].rgb;
4881                 for (i = 0;i < 128*128*3;i++)
4882                         if (c[i])
4883                                 break;
4884                 if (i == 128*128*3)
4885                 {
4886                         // all pixels in the unused lightmap were black...
4887                         loadmodel->brushq3.deluxemapping = false;
4888                 }
4889         }
4890
4891         Con_DPrintf("%s is %sdeluxemapped\n", loadmodel->name, loadmodel->brushq3.deluxemapping ? "" : "not ");
4892
4893         // figure out what the most reasonable merge power is within limits
4894         loadmodel->brushq3.num_lightmapmergepower = 0;
4895         for (power = 1;power <= mod_q3bsp_lightmapmergepower.integer && (1 << power) <= gl_max_texture_size && (1 << (power * 2)) < 4 * (count >> loadmodel->brushq3.deluxemapping);power++)
4896                 loadmodel->brushq3.num_lightmapmergepower = power;
4897         loadmodel->brushq3.num_lightmapmerge = 1 << loadmodel->brushq3.num_lightmapmergepower;
4898
4899         loadmodel->brushq3.num_mergedlightmaps = ((count >> loadmodel->brushq3.deluxemapping) + (1 << (loadmodel->brushq3.num_lightmapmergepower * 2)) - 1) >> (loadmodel->brushq3.num_lightmapmergepower * 2);
4900         loadmodel->brushq3.data_lightmaps = (rtexture_t **)Mem_Alloc(loadmodel->mempool, loadmodel->brushq3.num_mergedlightmaps * sizeof(rtexture_t *));
4901         if (loadmodel->brushq3.deluxemapping)
4902                 loadmodel->brushq3.data_deluxemaps = (rtexture_t **)Mem_Alloc(loadmodel->mempool, loadmodel->brushq3.num_mergedlightmaps * sizeof(rtexture_t *));
4903
4904         // allocate a texture pool if we need it
4905         if (loadmodel->texturepool == NULL && cls.state != ca_dedicated)
4906                 loadmodel->texturepool = R_AllocTexturePool();
4907
4908         j = 128 << loadmodel->brushq3.num_lightmapmergepower;
4909         if (loadmodel->brushq3.data_lightmaps)
4910                 for (i = 0;i < loadmodel->brushq3.num_mergedlightmaps;i++)
4911                         loadmodel->brushq3.data_lightmaps[i] = R_LoadTexture2D(loadmodel->texturepool, va("lightmap%04i", i), j, j, NULL, TEXTYPE_RGB, TEXF_FORCELINEAR | TEXF_PRECACHE, NULL);
4912
4913         if (loadmodel->brushq3.data_deluxemaps)
4914                 for (i = 0;i < loadmodel->brushq3.num_mergedlightmaps;i++)
4915                         loadmodel->brushq3.data_deluxemaps[i] = R_LoadTexture2D(loadmodel->texturepool, va("deluxemap%04i", i), j, j, NULL, TEXTYPE_RGB, TEXF_FORCELINEAR | TEXF_PRECACHE, NULL);
4916
4917         power = loadmodel->brushq3.num_lightmapmergepower;
4918         power2 = power * 2;
4919         mask = (1 << power) - 1;
4920         for (i = 0;i < count;i++)
4921         {
4922                 j = i >> loadmodel->brushq3.deluxemapping;
4923                 if (loadmodel->brushq3.deluxemapping && (i & 1))
4924                         R_UpdateTexture(loadmodel->brushq3.data_deluxemaps[j >> power2], in[i].rgb, (j & mask) * 128, ((j >> power) & mask) * 128, 128, 128);
4925                 else
4926                         R_UpdateTexture(loadmodel->brushq3.data_lightmaps [j >> power2], in[i].rgb, (j & mask) * 128, ((j >> power) & mask) * 128, 128, 128);
4927         }
4928 }
4929
4930 static void Mod_Q3BSP_LoadFaces(lump_t *l)
4931 {
4932         q3dface_t *in, *oldin;
4933         msurface_t *out, *oldout;
4934         int i, oldi, j, n, count, invalidelements, patchsize[2], finalwidth, finalheight, xtess, ytess, finalvertices, finaltriangles, firstvertex, firstelement, type, oldnumtriangles, oldnumtriangles2, meshvertices, meshtriangles, numvertices, numtriangles;
4935         float lightmaptcbase[2], lightmaptcscale;
4936         //int *originalelement3i;
4937         //int *originalneighbor3i;
4938         float *originalvertex3f;
4939         //float *originalsvector3f;
4940         //float *originaltvector3f;
4941         float *originalnormal3f;
4942         float *originalcolor4f;
4943         float *originaltexcoordtexture2f;
4944         float *originaltexcoordlightmap2f;
4945         float *v;
4946
4947         in = (q3dface_t *)(mod_base + l->fileofs);
4948         if (l->filelen % sizeof(*in))
4949                 Host_Error("Mod_Q3BSP_LoadFaces: funny lump size in %s",loadmodel->name);
4950         count = l->filelen / sizeof(*in);
4951         out = (msurface_t *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
4952
4953         loadmodel->data_surfaces = out;
4954         loadmodel->num_surfaces = count;
4955
4956         i = 0;
4957         oldi = i;
4958         oldin = in;
4959         oldout = out;
4960         meshvertices = 0;
4961         meshtriangles = 0;
4962         for (;i < count;i++, in++, out++)
4963         {
4964                 // check face type first
4965                 type = LittleLong(in->type);
4966                 if (type != Q3FACETYPE_POLYGON
4967                  && type != Q3FACETYPE_PATCH
4968                  && type != Q3FACETYPE_MESH
4969                  && type != Q3FACETYPE_FLARE)
4970                 {
4971                         Con_DPrintf("Mod_Q3BSP_LoadFaces: face #%i: unknown face type %i\n", i, type);
4972                         continue;
4973                 }
4974
4975                 n = LittleLong(in->textureindex);
4976                 if (n < 0 || n >= loadmodel->num_textures)
4977                 {
4978                         Con_DPrintf("Mod_Q3BSP_LoadFaces: face #%i: invalid textureindex %i (%i textures)\n", i, n, loadmodel->num_textures);
4979                         continue;
4980                 }
4981                 out->texture = loadmodel->data_textures + n;
4982                 n = LittleLong(in->effectindex);
4983                 if (n < -1 || n >= loadmodel->brushq3.num_effects)
4984                 {
4985                         if (developer.integer >= 100)
4986                                 Con_Printf("Mod_Q3BSP_LoadFaces: face #%i (texture \"%s\"): invalid effectindex %i (%i effects)\n", i, out->texture->name, n, loadmodel->brushq3.num_effects);
4987                         n = -1;
4988                 }
4989                 if (n == -1)
4990                         out->effect = NULL;
4991                 else
4992                         out->effect = loadmodel->brushq3.data_effects + n;
4993
4994                 if (cls.state != ca_dedicated)
4995                 {
4996                         out->lightmaptexture = NULL;
4997                         out->deluxemaptexture = r_texture_blanknormalmap;
4998                         n = LittleLong(in->lightmapindex);
4999                         if (n < 0)
5000                                 n = -1;
5001                         else if (n >= loadmodel->brushq3.num_originallightmaps)
5002                         {
5003                                 Con_Printf("Mod_Q3BSP_LoadFaces: face #%i (texture \"%s\"): invalid lightmapindex %i (%i lightmaps)\n", i, out->texture->name, n, loadmodel->brushq3.num_originallightmaps);
5004                                 n = -1;
5005                         }
5006                         else
5007                         {
5008                                 out->lightmaptexture = loadmodel->brushq3.data_lightmaps[n >> (loadmodel->brushq3.num_lightmapmergepower * 2 + loadmodel->brushq3.deluxemapping)];
5009                                 if (loadmodel->brushq3.deluxemapping)
5010                                         out->deluxemaptexture = loadmodel->brushq3.data_deluxemaps[n >> (loadmodel->brushq3.num_lightmapmergepower * 2 + loadmodel->brushq3.deluxemapping)];
5011                         }
5012                 }
5013
5014                 firstvertex = LittleLong(in->firstvertex);
5015                 numvertices = LittleLong(in->numvertices);
5016                 firstelement = LittleLong(in->firstelement);
5017                 numtriangles = LittleLong(in->numelements) / 3;
5018                 if (numtriangles * 3 != LittleLong(in->numelements))
5019                 {
5020                         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));
5021                         continue;
5022                 }
5023                 if (firstvertex < 0 || firstvertex + numvertices > loadmodel->brushq3.num_vertices)
5024                 {
5025                         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);
5026                         continue;
5027                 }
5028                 if (firstelement < 0 || firstelement + numtriangles * 3 > loadmodel->brushq3.num_triangles * 3)
5029                 {
5030                         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);
5031                         continue;
5032                 }
5033                 switch(type)
5034                 {
5035                 case Q3FACETYPE_POLYGON:
5036                 case Q3FACETYPE_MESH:
5037                         // no processing necessary
5038                         break;
5039                 case Q3FACETYPE_PATCH:
5040                         patchsize[0] = LittleLong(in->specific.patch.patchsize[0]);
5041                         patchsize[1] = LittleLong(in->specific.patch.patchsize[1]);
5042                         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))
5043                         {
5044                                 Con_Printf("Mod_Q3BSP_LoadFaces: face #%i (texture \"%s\"): invalid patchsize %ix%i\n", i, out->texture->name, patchsize[0], patchsize[1]);
5045                                 continue;
5046                         }
5047                         originalvertex3f = loadmodel->brushq3.data_vertex3f + firstvertex * 3;
5048                         // convert patch to Q3FACETYPE_MESH
5049                         xtess = Q3PatchTesselationOnX(patchsize[0], patchsize[1], 3, originalvertex3f, r_subdivisions_tolerance.value);
5050                         ytess = Q3PatchTesselationOnY(patchsize[0], patchsize[1], 3, originalvertex3f, r_subdivisions_tolerance.value);
5051                         // bound to user settings
5052                         xtess = bound(r_subdivisions_mintess.integer, xtess, r_subdivisions_maxtess.integer);
5053                         ytess = bound(r_subdivisions_mintess.integer, ytess, r_subdivisions_maxtess.integer);
5054                         // bound to sanity settings
5055                         xtess = bound(1, xtess, 1024);
5056                         ytess = bound(1, ytess, 1024);
5057                         // bound to user limit on vertices
5058                         while ((xtess > 1 || ytess > 1) && (((patchsize[0] - 1) * xtess) + 1) * (((patchsize[1] - 1) * ytess) + 1) > min(r_subdivisions_maxvertices.integer, 262144))
5059                         {
5060                                 if (xtess > ytess)
5061                                         xtess--;
5062                                 else
5063                                         ytess--;
5064                         }
5065                         finalwidth = ((patchsize[0] - 1) * xtess) + 1;
5066                         finalheight = ((patchsize[1] - 1) * ytess) + 1;
5067                         numvertices = finalwidth * finalheight;
5068                         numtriangles = (finalwidth - 1) * (finalheight - 1) * 2;
5069                         break;
5070                 case Q3FACETYPE_FLARE:
5071                         if (developer.integer >= 100)
5072                                 Con_Printf("Mod_Q3BSP_LoadFaces: face #%i (texture \"%s\"): Q3FACETYPE_FLARE not supported (yet)\n", i, out->texture->name);
5073                         // don't render it
5074                         continue;
5075                 }
5076                 out->num_vertices = numvertices;
5077                 out->num_triangles = numtriangles;
5078                 meshvertices += out->num_vertices;
5079                 meshtriangles += out->num_triangles;
5080         }
5081
5082         i = oldi;
5083         in = oldin;
5084         out = oldout;
5085         Mod_AllocSurfMesh(loadmodel->mempool, meshvertices, meshtriangles, false, true, false);
5086         meshvertices = 0;
5087         meshtriangles = 0;
5088         for (;i < count && meshvertices + out->num_vertices <= loadmodel->surfmesh.num_vertices;i++, in++, out++)
5089         {
5090                 if (out->num_vertices < 3 || out->num_triangles < 1)
5091                         continue;
5092
5093                 type = LittleLong(in->type);
5094                 firstvertex = LittleLong(in->firstvertex);
5095                 firstelement = LittleLong(in->firstelement);
5096                 out->num_firstvertex = meshvertices;
5097                 out->num_firsttriangle = meshtriangles;
5098                 switch(type)
5099                 {
5100                 case Q3FACETYPE_POLYGON:
5101                 case Q3FACETYPE_MESH:
5102                         // no processing necessary, except for lightmap merging
5103                         for (j = 0;j < out->num_vertices;j++)
5104                         {
5105                                 (loadmodel->surfmesh.data_vertex3f + 3 * out->num_firstvertex)[j * 3 + 0] = loadmodel->brushq3.data_vertex3f[(firstvertex + j) * 3 + 0];
5106                                 (loadmodel->surfmesh.data_vertex3f + 3 * out->num_firstvertex)[j * 3 + 1] = loadmodel->brushq3.data_vertex3f[(firstvertex + j) * 3 + 1];
5107                                 (loadmodel->surfmesh.data_vertex3f + 3 * out->num_firstvertex)[j * 3 + 2] = loadmodel->brushq3.data_vertex3f[(firstvertex + j) * 3 + 2];
5108                                 (loadmodel->surfmesh.data_normal3f + 3 * out->num_firstvertex)[j * 3 + 0] = loadmodel->brushq3.data_normal3f[(firstvertex + j) * 3 + 0];
5109                                 (loadmodel->surfmesh.data_normal3f + 3 * out->num_firstvertex)[j * 3 + 1] = loadmodel->brushq3.data_normal3f[(firstvertex + j) * 3 + 1];
5110                                 (loadmodel->surfmesh.data_normal3f + 3 * out->num_firstvertex)[j * 3 + 2] = loadmodel->brushq3.data_normal3f[(firstvertex + j) * 3 + 2];
5111                                 (loadmodel->surfmesh.data_texcoordtexture2f + 2 * out->num_firstvertex)[j * 2 + 0] = loadmodel->brushq3.data_texcoordtexture2f[(firstvertex + j) * 2 + 0];
5112                                 (loadmodel->surfmesh.data_texcoordtexture2f + 2 * out->num_firstvertex)[j * 2 + 1] = loadmodel->brushq3.data_texcoordtexture2f[(firstvertex + j) * 2 + 1];
5113                                 (loadmodel->surfmesh.data_texcoordlightmap2f + 2 * out->num_firstvertex)[j * 2 + 0] = loadmodel->brushq3.data_texcoordlightmap2f[(firstvertex + j) * 2 + 0];
5114                                 (loadmodel->surfmesh.data_texcoordlightmap2f + 2 * out->num_firstvertex)[j * 2 + 1] = loadmodel->brushq3.data_texcoordlightmap2f[(firstvertex + j) * 2 + 1];
5115                                 (loadmodel->surfmesh.data_lightmapcolor4f + 4 * out->num_firstvertex)[j * 4 + 0] = loadmodel->brushq3.data_color4f[(firstvertex + j) * 4 + 0];
5116                                 (loadmodel->surfmesh.data_lightmapcolor4f + 4 * out->num_firstvertex)[j * 4 + 1] = loadmodel->brushq3.data_color4f[(firstvertex + j) * 4 + 1];
5117                                 (loadmodel->surfmesh.data_lightmapcolor4f + 4 * out->num_firstvertex)[j * 4 + 2] = loadmodel->brushq3.data_color4f[(firstvertex + j) * 4 + 2];
5118                                 (loadmodel->surfmesh.data_lightmapcolor4f + 4 * out->num_firstvertex)[j * 4 + 3] = loadmodel->brushq3.data_color4f[(firstvertex + j) * 4 + 3];
5119                         }
5120                         for (j = 0;j < out->num_triangles*3;j++)
5121                                 (loadmodel->surfmesh.data_element3i + 3 * out->num_firsttriangle)[j] = loadmodel->brushq3.data_element3i[firstelement + j] + out->num_firstvertex;
5122                         break;
5123                 case Q3FACETYPE_PATCH:
5124                         patchsize[0] = LittleLong(in->specific.patch.patchsize[0]);
5125                         patchsize[1] = LittleLong(in->specific.patch.patchsize[1]);
5126                         originalvertex3f = loadmodel->brushq3.data_vertex3f + firstvertex * 3;
5127                         originalnormal3f = loadmodel->brushq3.data_normal3f + firstvertex * 3;
5128                         originaltexcoordtexture2f = loadmodel->brushq3.data_texcoordtexture2f + firstvertex * 2;
5129                         originaltexcoordlightmap2f = loadmodel->brushq3.data_texcoordlightmap2f + firstvertex * 2;
5130                         originalcolor4f = loadmodel->brushq3.data_color4f + firstvertex * 4;
5131                         // convert patch to Q3FACETYPE_MESH
5132                         xtess = Q3PatchTesselationOnX(patchsize[0], patchsize[1], 3, originalvertex3f, r_subdivisions_tolerance.value);
5133                         ytess = Q3PatchTesselationOnY(patchsize[0], patchsize[1], 3, originalvertex3f, r_subdivisions_tolerance.value);
5134                         // bound to user settings
5135                         xtess = bound(r_subdivisions_mintess.integer, xtess, r_subdivisions_maxtess.integer);
5136                         ytess = bound(r_subdivisions_mintess.integer, ytess, r_subdivisions_maxtess.integer);
5137                         // bound to sanity settings
5138                         xtess = bound(1, xtess, 1024);
5139                         ytess = bound(1, ytess, 1024);
5140                         // bound to user limit on vertices
5141                         while ((xtess > 1 || ytess > 1) && (((patchsize[0] - 1) * xtess) + 1) * (((patchsize[1] - 1) * ytess) + 1) > min(r_subdivisions_maxvertices.integer, 262144))
5142                         {
5143                                 if (xtess > ytess)
5144                                         xtess--;
5145                                 else
5146                                         ytess--;
5147                         }
5148                         finalwidth = ((patchsize[0] - 1) * xtess) + 1;
5149                         finalheight = ((patchsize[1] - 1) * ytess) + 1;
5150                         finalvertices = finalwidth * finalheight;
5151                         finaltriangles = (finalwidth - 1) * (finalheight - 1) * 2;
5152                         type = Q3FACETYPE_MESH;
5153                         // generate geometry
5154                         // (note: normals are skipped because they get recalculated)
5155                         Q3PatchTesselateFloat(3, sizeof(float[3]), (loadmodel->surfmesh.data_vertex3f + 3 * out->num_firstvertex), patchsize[0], patchsize[1], sizeof(float[3]), originalvertex3f, xtess, ytess);
5156                         Q3PatchTesselateFloat(3, sizeof(float[3]), (loadmodel->surfmesh.data_normal3f + 3 * out->num_firstvertex), patchsize[0], patchsize[1], sizeof(float[3]), originalnormal3f, xtess, ytess);
5157                         Q3PatchTesselateFloat(2, sizeof(float[2]), (loadmodel->surfmesh.data_texcoordtexture2f + 2 * out->num_firstvertex), patchsize[0], patchsize[1], sizeof(float[2]), originaltexcoordtexture2f, xtess, ytess);
5158                         Q3PatchTesselateFloat(2, sizeof(float[2]), (loadmodel->surfmesh.data_texcoordlightmap2f + 2 * out->num_firstvertex), patchsize[0], patchsize[1], sizeof(float[2]), originaltexcoordlightmap2f, xtess, ytess);
5159                         Q3PatchTesselateFloat(4, sizeof(float[4]), (loadmodel->surfmesh.data_lightmapcolor4f + 4 * out->num_firstvertex), patchsize[0], patchsize[1], sizeof(float[4]), originalcolor4f, xtess, ytess);
5160                         Q3PatchTriangleElements((loadmodel->surfmesh.data_element3i + 3 * out->num_firsttriangle), finalwidth, finalheight, out->num_firstvertex);
5161                         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);
5162                         if (developer.integer >= 100)
5163                         {
5164                                 if (out->num_triangles < finaltriangles)
5165                                         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);
5166                                 else
5167                                         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);
5168                         }
5169                         // q3map does not put in collision brushes for curves... ugh
5170                         // build the lower quality collision geometry
5171                         xtess = Q3PatchTesselationOnX(patchsize[0], patchsize[1], 3, originalvertex3f, r_subdivisions_collision_tolerance.value);
5172                         ytess = Q3PatchTesselationOnY(patchsize[0], patchsize[1], 3, originalvertex3f, r_subdivisions_collision_tolerance.value);
5173                         // bound to user settings
5174                         xtess = bound(r_subdivisions_collision_mintess.integer, xtess, r_subdivisions_collision_maxtess.integer);
5175                         ytess = bound(r_subdivisions_collision_mintess.integer, ytess, r_subdivisions_collision_maxtess.integer);
5176                         // bound to sanity settings
5177                         xtess = bound(1, xtess, 1024);
5178                         ytess = bound(1, ytess, 1024);
5179                         // bound to user limit on vertices
5180                         while ((xtess > 1 || ytess > 1) && (((patchsize[0] - 1) * xtess) + 1) * (((patchsize[1] - 1) * ytess) + 1) > min(r_subdivisions_collision_maxvertices.integer, 262144))
5181                         {
5182                                 if (xtess > ytess)
5183                                         xtess--;
5184                                 else
5185                                         ytess--;
5186                         }
5187                         finalwidth = ((patchsize[0] - 1) * xtess) + 1;
5188                         finalheight = ((patchsize[1] - 1) * ytess) + 1;
5189                         finalvertices = finalwidth * finalheight;
5190                         finaltriangles = (finalwidth - 1) * (finalheight - 1) * 2;
5191
5192                         out->data_collisionvertex3f = (float *)Mem_Alloc(loadmodel->mempool, sizeof(float[3]) * finalvertices);
5193                         out->data_collisionelement3i = (int *)Mem_Alloc(loadmodel->mempool, sizeof(int[3]) * finaltriangles);
5194                         out->num_collisionvertices = finalvertices;
5195                         out->num_collisiontriangles = finaltriangles;
5196                         Q3PatchTesselateFloat(3, sizeof(float[3]), out->data_collisionvertex3f, patchsize[0], patchsize[1], sizeof(float[3]), originalvertex3f, xtess, ytess);
5197                         Q3PatchTriangleElements(out->data_collisionelement3i, finalwidth, finalheight, 0);
5198
5199                         //Mod_SnapVertices(3, out->num_vertices, (loadmodel->surfmesh.data_vertex3f + 3 * out->num_firstvertex), 0.25);
5200                         Mod_SnapVertices(3, out->num_collisionvertices, out->data_collisionvertex3f, 1);
5201
5202                         oldnumtriangles = out->num_triangles;
5203                         oldnumtriangles2 = out->num_collisiontriangles;
5204                         out->num_collisiontriangles = Mod_RemoveDegenerateTriangles(out->num_collisiontriangles, out->data_collisionelement3i, out->data_collisionelement3i, out->data_collisionvertex3f);
5205                         if (developer.integer >= 100)
5206                                 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);
5207                         break;
5208                 default:
5209                         break;
5210                 }
5211                 meshvertices += out->num_vertices;
5212                 meshtriangles += out->num_triangles;
5213                 for (j = 0, invalidelements = 0;j < out->num_triangles * 3;j++)
5214                         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)
5215                                 invalidelements++;
5216                 if (invalidelements)
5217                 {
5218                         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);
5219                         for (j = 0;j < out->num_triangles * 3;j++)
5220                         {
5221                                 Con_Printf(" %i", (loadmodel->surfmesh.data_element3i + 3 * out->num_firsttriangle)[j] - out->num_firstvertex);
5222                                 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)
5223                                         (loadmodel->surfmesh.data_element3i + 3 * out->num_firsttriangle)[j] = out->num_firstvertex;
5224                         }
5225                         Con_Print("\n");
5226                 }
5227                 // calculate a bounding box
5228                 VectorClear(out->mins);
5229                 VectorClear(out->maxs);
5230                 if (out->num_vertices)
5231                 {
5232                         int lightmapindex = LittleLong(in->lightmapindex);
5233                         if (lightmapindex >= 0 && cls.state != ca_dedicated)
5234                         {
5235                                 lightmapindex >>= loadmodel->brushq3.deluxemapping;
5236                                 lightmaptcscale = 1.0f / loadmodel->brushq3.num_lightmapmerge;
5237                                 lightmaptcbase[0] = ((lightmapindex                                             ) & (loadmodel->brushq3.num_lightmapmerge - 1)) * lightmaptcscale;
5238                                 lightmaptcbase[1] = ((lightmapindex >> loadmodel->brushq3.num_lightmapmergepower) & (loadmodel->brushq3.num_lightmapmerge - 1)) * lightmaptcscale;
5239                                 // modify the lightmap texcoords to match this region of the merged lightmap
5240                                 for (j = 0, v = loadmodel->surfmesh.data_texcoordlightmap2f + 2 * out->num_firstvertex;j < out->num_vertices;j++, v += 2)
5241                                 {
5242                                         v[0] = v[0] * lightmaptcscale + lightmaptcbase[0];
5243                                         v[1] = v[1] * lightmaptcscale + lightmaptcbase[1];
5244                                 }
5245                         }
5246                         VectorCopy((loadmodel->surfmesh.data_vertex3f + 3 * out->num_firstvertex), out->mins);
5247                         VectorCopy((loadmodel->surfmesh.data_vertex3f + 3 * out->num_firstvertex), out->maxs);
5248                         for (j = 1, v = (loadmodel->surfmesh.data_vertex3f + 3 * out->num_firstvertex) + 3;j < out->num_vertices;j++, v += 3)
5249                         {
5250                                 out->mins[0] = min(out->mins[0], v[0]);
5251                                 out->maxs[0] = max(out->maxs[0], v[0]);
5252                                 out->mins[1] = min(out->mins[1], v[1]);
5253                                 out->maxs[1] = max(out->maxs[1], v[1]);
5254                                 out->mins[2] = min(out->mins[2], v[2]);
5255                                 out->maxs[2] = max(out->maxs[2], v[2]);
5256                         }
5257                         out->mins[0] -= 1.0f;
5258                         out->mins[1] -= 1.0f;
5259                         out->mins[2] -= 1.0f;
5260                         out->maxs[0] += 1.0f;
5261                         out->maxs[1] += 1.0f;
5262                         out->maxs[2] += 1.0f;
5263                 }
5264                 // set lightmap styles for consistency with q1bsp
5265                 //out->lightmapinfo->styles[0] = 0;
5266                 //out->lightmapinfo->styles[1] = 255;
5267                 //out->lightmapinfo->styles[2] = 255;
5268                 //out->lightmapinfo->styles[3] = 255;
5269         }
5270
5271         // for per pixel lighting
5272         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);
5273
5274         // free the no longer needed vertex data
5275         loadmodel->brushq3.num_vertices = 0;
5276         if (loadmodel->brushq3.data_vertex3f)
5277                 Mem_Free(loadmodel->brushq3.data_vertex3f);
5278         loadmodel->brushq3.data_vertex3f = NULL;
5279         loadmodel->brushq3.data_normal3f = NULL;
5280         loadmodel->brushq3.data_texcoordtexture2f = NULL;
5281         loadmodel->brushq3.data_texcoordlightmap2f = NULL;
5282         loadmodel->brushq3.data_color4f = NULL;
5283         // free the no longer needed triangle data
5284         loadmodel->brushq3.num_triangles = 0;
5285         if (loadmodel->brushq3.data_element3i)
5286                 Mem_Free(loadmodel->brushq3.data_element3i);
5287         loadmodel->brushq3.data_element3i = NULL;
5288 }
5289
5290 static void Mod_Q3BSP_LoadModels(lump_t *l)
5291 {
5292         q3dmodel_t *in;
5293         q3dmodel_t *out;
5294         int i, j, n, c, count;
5295
5296         in = (q3dmodel_t *)(mod_base + l->fileofs);
5297         if (l->filelen % sizeof(*in))
5298                 Host_Error("Mod_Q3BSP_LoadModels: funny lump size in %s",loadmodel->name);
5299         count = l->filelen / sizeof(*in);
5300         out = (q3dmodel_t *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
5301
5302         loadmodel->brushq3.data_models = out;
5303         loadmodel->brushq3.num_models = count;
5304
5305         for (i = 0;i < count;i++, in++, out++)
5306         {
5307                 for (j = 0;j < 3;j++)
5308                 {
5309                         out->mins[j] = LittleFloat(in->mins[j]);
5310                         out->maxs[j] = LittleFloat(in->maxs[j]);
5311                 }
5312                 n = LittleLong(in->firstface);
5313                 c = LittleLong(in->numfaces);
5314                 if (n < 0 || n + c > loadmodel->num_surfaces)
5315                         Host_Error("Mod_Q3BSP_LoadModels: invalid face range %i : %i (%i faces)", n, n + c, loadmodel->num_surfaces);
5316                 out->firstface = n;
5317                 out->numfaces = c;
5318                 n = LittleLong(in->firstbrush);
5319                 c = LittleLong(in->numbrushes);
5320                 if (n < 0 || n + c > loadmodel->brush.num_brushes)
5321                         Host_Error("Mod_Q3BSP_LoadModels: invalid brush range %i : %i (%i brushes)", n, n + c, loadmodel->brush.num_brushes);
5322                 out->firstbrush = n;
5323                 out->numbrushes = c;
5324         }
5325 }
5326
5327 static void Mod_Q3BSP_LoadLeafBrushes(lump_t *l)
5328 {
5329         int *in;
5330         int *out;
5331         int i, n, count;
5332
5333         in = (int *)(mod_base + l->fileofs);
5334         if (l->filelen % sizeof(*in))
5335                 Host_Error("Mod_Q3BSP_LoadLeafBrushes: funny lump size in %s",loadmodel->name);
5336         count = l->filelen / sizeof(*in);
5337         out = (int *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
5338
5339         loadmodel->brush.data_leafbrushes = out;
5340         loadmodel->brush.num_leafbrushes = count;
5341
5342         for (i = 0;i < count;i++, in++, out++)
5343         {
5344                 n = LittleLong(*in);
5345                 if (n < 0 || n >= loadmodel->brush.num_brushes)
5346                         Host_Error("Mod_Q3BSP_LoadLeafBrushes: invalid brush index %i (%i brushes)", n, loadmodel->brush.num_brushes);
5347                 *out = n;
5348         }
5349 }
5350
5351 static void Mod_Q3BSP_LoadLeafFaces(lump_t *l)
5352 {
5353         int *in;
5354         int *out;
5355         int i, n, count;
5356
5357         in = (int *)(mod_base + l->fileofs);
5358         if (l->filelen % sizeof(*in))
5359                 Host_Error("Mod_Q3BSP_LoadLeafFaces: funny lump size in %s",loadmodel->name);
5360         count = l->filelen / sizeof(*in);
5361         out = (int *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
5362
5363         loadmodel->brush.data_leafsurfaces = out;
5364         loadmodel->brush.num_leafsurfaces = count;
5365
5366         for (i = 0;i < count;i++, in++, out++)
5367         {
5368                 n = LittleLong(*in);
5369                 if (n < 0 || n >= loadmodel->num_surfaces)
5370                         Host_Error("Mod_Q3BSP_LoadLeafFaces: invalid face index %i (%i faces)", n, loadmodel->num_surfaces);
5371                 *out = n;
5372         }
5373 }
5374
5375 static void Mod_Q3BSP_LoadLeafs(lump_t *l)
5376 {
5377         q3dleaf_t *in;
5378         mleaf_t *out;
5379         int i, j, n, c, count;
5380
5381         in = (q3dleaf_t *)(mod_base + l->fileofs);
5382         if (l->filelen % sizeof(*in))
5383                 Host_Error("Mod_Q3BSP_LoadLeafs: funny lump size in %s",loadmodel->name);
5384         count = l->filelen / sizeof(*in);
5385         out = (mleaf_t *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
5386
5387         loadmodel->brush.data_leafs = out;
5388         loadmodel->brush.num_leafs = count;
5389
5390         for (i = 0;i < count;i++, in++, out++)
5391         {
5392                 out->parent = NULL;
5393                 out->plane = NULL;
5394                 out->clusterindex = LittleLong(in->clusterindex);
5395                 out->areaindex = LittleLong(in->areaindex);
5396                 for (j = 0;j < 3;j++)
5397                 {
5398                         // yes the mins/maxs are ints
5399                         out->mins[j] = LittleLong(in->mins[j]) - 1;
5400                         out->maxs[j] = LittleLong(in->maxs[j]) + 1;
5401                 }
5402                 n = LittleLong(in->firstleafface);
5403                 c = LittleLong(in->numleaffaces);
5404                 if (n < 0 || n + c > loadmodel->brush.num_leafsurfaces)
5405                         Host_Error("Mod_Q3BSP_LoadLeafs: invalid leafsurface range %i : %i (%i leafsurfaces)", n, n + c, loadmodel->brush.num_leafsurfaces);
5406                 out->firstleafsurface = loadmodel->brush.data_leafsurfaces + n;
5407                 out->numleafsurfaces = c;
5408                 n = LittleLong(in->firstleafbrush);
5409                 c = LittleLong(in->numleafbrushes);
5410                 if (n < 0 || n + c > loadmodel->brush.num_leafbrushes)
5411                         Host_Error("Mod_Q3BSP_LoadLeafs: invalid leafbrush range %i : %i (%i leafbrushes)", n, n + c, loadmodel->brush.num_leafbrushes);
5412                 out->firstleafbrush = loadmodel->brush.data_leafbrushes + n;
5413                 out->numleafbrushes = c;
5414         }
5415 }
5416
5417 static void Mod_Q3BSP_LoadNodes(lump_t *l)
5418 {
5419         q3dnode_t *in;
5420         mnode_t *out;
5421         int i, j, n, count;
5422
5423         in = (q3dnode_t *)(mod_base + l->fileofs);
5424         if (l->filelen % sizeof(*in))
5425                 Host_Error("Mod_Q3BSP_LoadNodes: funny lump size in %s",loadmodel->name);
5426         count = l->filelen / sizeof(*in);
5427         out = (mnode_t *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
5428
5429         loadmodel->brush.data_nodes = out;
5430         loadmodel->brush.num_nodes = count;
5431
5432         for (i = 0;i < count;i++, in++, out++)
5433         {
5434                 out->parent = NULL;
5435                 n = LittleLong(in->planeindex);
5436                 if (n < 0 || n >= loadmodel->brush.num_planes)
5437                         Host_Error("Mod_Q3BSP_LoadNodes: invalid planeindex %i (%i planes)", n, loadmodel->brush.num_planes);
5438                 out->plane = loadmodel->brush.data_planes + n;
5439                 for (j = 0;j < 2;j++)
5440                 {
5441                         n = LittleLong(in->childrenindex[j]);
5442                         if (n >= 0)
5443                         {
5444                                 if (n >= loadmodel->brush.num_nodes)
5445                                         Host_Error("Mod_Q3BSP_LoadNodes: invalid child node index %i (%i nodes)", n, loadmodel->brush.num_nodes);
5446                                 out->children[j] = loadmodel->brush.data_nodes + n;
5447                         }
5448                         else
5449                         {
5450                                 n = -1 - n;
5451                                 if (n >= loadmodel->brush.num_leafs)
5452                                         Host_Error("Mod_Q3BSP_LoadNodes: invalid child leaf index %i (%i leafs)", n, loadmodel->brush.num_leafs);
5453                                 out->children[j] = (mnode_t *)(loadmodel->brush.data_leafs + n);
5454                         }
5455                 }
5456                 for (j = 0;j < 3;j++)
5457                 {
5458                         // yes the mins/maxs are ints
5459                         out->mins[j] = LittleLong(in->mins[j]) - 1;
5460                         out->maxs[j] = LittleLong(in->maxs[j]) + 1;
5461                 }
5462         }
5463
5464         // set the parent pointers
5465         Mod_Q1BSP_LoadNodes_RecursiveSetParent(loadmodel->brush.data_nodes, NULL);
5466 }
5467
5468 static void Mod_Q3BSP_LoadLightGrid(lump_t *l)
5469 {
5470         q3dlightgrid_t *in;
5471         q3dlightgrid_t *out;
5472         int count;
5473
5474         in = (q3dlightgrid_t *)(mod_base + l->fileofs);
5475         if (l->filelen % sizeof(*in))
5476                 Host_Error("Mod_Q3BSP_LoadLightGrid: funny lump size in %s",loadmodel->name);
5477         loadmodel->brushq3.num_lightgrid_scale[0] = 1.0f / loadmodel->brushq3.num_lightgrid_cellsize[0];
5478         loadmodel->brushq3.num_lightgrid_scale[1] = 1.0f / loadmodel->brushq3.num_lightgrid_cellsize[1];
5479         loadmodel->brushq3.num_lightgrid_scale[2] = 1.0f / loadmodel->brushq3.num_lightgrid_cellsize[2];
5480         loadmodel->brushq3.num_lightgrid_imins[0] = (int)ceil(loadmodel->brushq3.data_models->mins[0] * loadmodel->brushq3.num_lightgrid_scale[0]);
5481         loadmodel->brushq3.num_lightgrid_imins[1] = (int)ceil(loadmodel->brushq3.data_models->mins[1] * loadmodel->brushq3.num_lightgrid_scale[1]);
5482         loadmodel->brushq3.num_lightgrid_imins[2] = (int)ceil(loadmodel->brushq3.data_models->mins[2] * loadmodel->brushq3.num_lightgrid_scale[2]);
5483         loadmodel->brushq3.num_lightgrid_imaxs[0] = (int)floor(loadmodel->brushq3.data_models->maxs[0] * loadmodel->brushq3.num_lightgrid_scale[0]);
5484         loadmodel->brushq3.num_lightgrid_imaxs[1] = (int)floor(loadmodel->brushq3.data_models->maxs[1] * loadmodel->brushq3.num_lightgrid_scale[1]);
5485         loadmodel->brushq3.num_lightgrid_imaxs[2] = (int)floor(loadmodel->brushq3.data_models->maxs[2] * loadmodel->brushq3.num_lightgrid_scale[2]);
5486         loadmodel->brushq3.num_lightgrid_isize[0] = loadmodel->brushq3.num_lightgrid_imaxs[0] - loadmodel->brushq3.num_lightgrid_imins[0] + 1;
5487         loadmodel->brushq3.num_lightgrid_isize[1] = loadmodel->brushq3.num_lightgrid_imaxs[1] - loadmodel->brushq3.num_lightgrid_imins[1] + 1;
5488         loadmodel->brushq3.num_lightgrid_isize[2] = loadmodel->brushq3.num_lightgrid_imaxs[2] - loadmodel->brushq3.num_lightgrid_imins[2] + 1;
5489         count = loadmodel->brushq3.num_lightgrid_isize[0] * loadmodel->brushq3.num_lightgrid_isize[1] * loadmodel->brushq3.num_lightgrid_isize[2];
5490         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]);
5491         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]);
5492
5493         // if lump is empty there is nothing to load, we can deal with that in the LightPoint code
5494         if (l->filelen)
5495         {
5496                 if (l->filelen < count * (int)sizeof(*in))
5497                         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]);
5498                 if (l->filelen != count * (int)sizeof(*in))
5499                         Con_Printf("Mod_Q3BSP_LoadLightGrid: Warning: calculated lightgrid size %i bytes does not match lump size %i\n", (int)(count * sizeof(*in)), l->filelen);
5500                 out = (q3dlightgrid_t *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
5501                 loadmodel->brushq3.data_lightgrid = out;
5502                 loadmodel->brushq3.num_lightgrid = count;
5503                 // no swapping or validation necessary
5504                 memcpy(out, in, count * (int)sizeof(*out));
5505         }
5506 }
5507
5508 static void Mod_Q3BSP_LoadPVS(lump_t *l)
5509 {
5510         q3dpvs_t *in;
5511         int totalchains;
5512
5513         if (l->filelen == 0)
5514         {
5515                 int i;
5516                 // unvised maps often have cluster indices even without pvs, so check
5517                 // leafs to find real number of clusters
5518                 loadmodel->brush.num_pvsclusters = 1;
5519                 for (i = 0;i < loadmodel->brush.num_leafs;i++)
5520                         loadmodel->brush.num_pvsclusters = max(loadmodel->brush.num_pvsclusters, loadmodel->brush.data_leafs[i].clusterindex + 1);
5521
5522                 // create clusters
5523                 loadmodel->brush.num_pvsclusterbytes = (loadmodel->brush.num_pvsclusters + 7) / 8;
5524                 totalchains = loadmodel->brush.num_pvsclusterbytes * loadmodel->brush.num_pvsclusters;
5525                 loadmodel->brush.data_pvsclusters = (unsigned char *)Mem_Alloc(loadmodel->mempool, totalchains);
5526                 memset(loadmodel->brush.data_pvsclusters, 0xFF, totalchains);
5527                 return;
5528         }
5529
5530         in = (q3dpvs_t *)(mod_base + l->fileofs);
5531         if (l->filelen < 9)
5532                 Host_Error("Mod_Q3BSP_LoadPVS: funny lump size in %s",loadmodel->name);
5533
5534         loadmodel->brush.num_pvsclusters = LittleLong(in->numclusters);
5535         loadmodel->brush.num_pvsclusterbytes = LittleLong(in->chainlength);
5536         if (loadmodel->brush.num_pvsclusterbytes < ((loadmodel->brush.num_pvsclusters + 7) / 8))
5537                 Host_Error("Mod_Q3BSP_LoadPVS: (chainlength = %i) < ((numclusters = %i) + 7) / 8", loadmodel->brush.num_pvsclusterbytes, loadmodel->brush.num_pvsclusters);
5538         totalchains = loadmodel->brush.num_pvsclusterbytes * loadmodel->brush.num_pvsclusters;
5539         if (l->filelen < totalchains + (int)sizeof(*in))
5540                 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);
5541
5542         loadmodel->brush.data_pvsclusters = (unsigned char *)Mem_Alloc(loadmodel->mempool, totalchains);
5543         memcpy(loadmodel->brush.data_pvsclusters, (unsigned char *)(in + 1), totalchains);
5544 }
5545
5546 static void Mod_Q3BSP_LightPoint(model_t *model, const vec3_t p, vec3_t ambientcolor, vec3_t diffusecolor, vec3_t diffusenormal)
5547 {
5548         int i, j, k, index[3];
5549         float transformed[3], blend1, blend2, blend, yaw, pitch, sinpitch, stylescale;
5550         q3dlightgrid_t *a, *s;
5551
5552         // scale lighting by lightstyle[0] so that darkmode in dpmod works properly
5553         stylescale = r_refdef.lightstylevalue[0] * (1.0f / 264.0f);
5554
5555         if (!model->brushq3.num_lightgrid)
5556         {
5557                 ambientcolor[0] = stylescale;
5558                 ambientcolor[1] = stylescale;
5559                 ambientcolor[2] = stylescale;
5560                 return;
5561         }
5562
5563         Matrix4x4_Transform(&model->brushq3.num_lightgrid_indexfromworld, p, transformed);
5564         //Matrix4x4_Print(&model->brushq3.num_lightgrid_indexfromworld);
5565         //Con_Printf("%f %f %f transformed %f %f %f clamped ", p[0], p[1], p[2], transformed[0], transformed[1], transformed[2]);
5566         transformed[0] = bound(0, transformed[0], model->brushq3.num_lightgrid_isize[0] - 1);
5567         transformed[1] = bound(0, transformed[1], model->brushq3.num_lightgrid_isize[1] - 1);
5568         transformed[2] = bound(0, transformed[2], model->brushq3.num_lightgrid_isize[2] - 1);
5569         index[0] = (int)floor(transformed[0]);
5570         index[1] = (int)floor(transformed[1]);
5571         index[2] = (int)floor(transformed[2]);
5572         //Con_Printf("%f %f %f index %i %i %i:\n", transformed[0], transformed[1], transformed[2], index[0], index[1], index[2]);
5573
5574         // now lerp the values
5575         VectorClear(diffusenormal);
5576         a = &model->brushq3.data_lightgrid[(index[2] * model->brushq3.num_lightgrid_isize[1] + index[1]) * model->brushq3.num_lightgrid_isize[0] + index[0]];
5577         for (k = 0;k < 2;k++)
5578         {
5579                 blend1 = (k ? (transformed[2] - index[2]) : (1 - (transformed[2] - index[2])));
5580                 if (blend1 < 0.001f || index[2] + k >= model->brushq3.num_lightgrid_isize[2])
5581                         continue;
5582                 for (j = 0;j < 2;j++)
5583                 {
5584                         blend2 = blend1 * (j ? (transformed[1] - index[1]) : (1 - (transformed[1] - index[1])));
5585                         if (blend2 < 0.001f || index[1] + j >= model->brushq3.num_lightgrid_isize[1])
5586                                 continue;
5587                         for (i = 0;i < 2;i++)
5588                         {
5589                                 blend = blend2 * (i ? (transformed[0] - index[0]) : (1 - (transformed[0] - index[0]))) * stylescale;
5590                                 if (blend < 0.001f || index[0] + i >= model->brushq3.num_lightgrid_isize[0])
5591                                         continue;
5592                                 s = a + (k * model->brushq3.num_lightgrid_isize[1] + j) * model->brushq3.num_lightgrid_isize[0] + i;
5593                                 VectorMA(ambientcolor, blend * (1.0f / 128.0f), s->ambientrgb, ambientcolor);
5594                                 VectorMA(diffusecolor, blend * (1.0f / 128.0f), s->diffusergb, diffusecolor);
5595                                 pitch = s->diffusepitch * M_PI / 128;
5596                                 yaw = s->diffuseyaw * M_PI / 128;
5597                                 sinpitch = sin(pitch);
5598                                 diffusenormal[0] += blend * (cos(yaw) * sinpitch);
5599                                 diffusenormal[1] += blend * (sin(yaw) * sinpitch);
5600                                 diffusenormal[2] += blend * (cos(pitch));
5601                                 //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)));
5602                         }
5603                 }
5604         }
5605
5606         // normalize the light direction before turning
5607         VectorNormalize(diffusenormal);
5608         //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]);
5609 }
5610
5611 static void Mod_Q3BSP_TracePoint_RecursiveBSPNode(trace_t *trace, model_t *model, mnode_t *node, const vec3_t point, int markframe)
5612 {
5613         int i;
5614         mleaf_t *leaf;
5615         colbrushf_t *brush;
5616         // find which leaf the point is in
5617         while (node->plane)
5618                 node = node->children[DotProduct(point, node->plane->normal) < node->plane->dist];
5619         // point trace the brushes
5620         leaf = (mleaf_t *)node;
5621         for (i = 0;i < leaf->numleafbrushes;i++)
5622         {
5623                 brush = model->brush.data_brushes[leaf->firstleafbrush[i]].colbrushf;
5624                 if (brush && brush->markframe != markframe && BoxesOverlap(point, point, brush->mins, brush->maxs))
5625                 {
5626                         brush->markframe = markframe;
5627                         Collision_TracePointBrushFloat(trace, point, brush);
5628                 }
5629         }
5630         // can't do point traces on curves (they have no thickness)
5631 }
5632
5633 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)
5634 {
5635         int i, startside, endside;
5636         float dist1, dist2, midfrac, mid[3], nodesegmentmins[3], nodesegmentmaxs[3];
5637         mleaf_t *leaf;
5638         msurface_t *surface;
5639         mplane_t *plane;
5640         colbrushf_t *brush;
5641         // walk the tree until we hit a leaf, recursing for any split cases
5642         while (node->plane)
5643         {
5644                 // abort if this part of the bsp tree can not be hit by this trace
5645 //              if (!(node->combinedsupercontents & trace->hitsupercontentsmask))
5646 //                      return;
5647                 plane = node->plane;
5648                 // axial planes are much more common than non-axial, so an optimized
5649                 // axial case pays off here
5650                 if (plane->type < 3)
5651                 {
5652                         dist1 = start[plane->type] - plane->dist;
5653                         dist2 = end[plane->type] - plane->dist;
5654                 }
5655                 else
5656                 {
5657                         dist1 = DotProduct(start, plane->normal) - plane->dist;
5658                         dist2 = DotProduct(end, plane->normal) - plane->dist;
5659                 }
5660                 startside = dist1 < 0;
5661                 endside = dist2 < 0;
5662                 if (startside == endside)
5663                 {
5664                         // most of the time the line fragment is on one side of the plane
5665                         node = node->children[startside];
5666                 }
5667                 else
5668                 {
5669                         // line crosses node plane, split the line
5670                         dist1 = PlaneDiff(linestart, plane);
5671                         dist2 = PlaneDiff(lineend, plane);
5672                         midfrac = dist1 / (dist1 - dist2);
5673                         VectorLerp(linestart, midfrac, lineend, mid);
5674                         // take the near side first
5675                         Mod_Q3BSP_TraceLine_RecursiveBSPNode(trace, model, node->children[startside], start, mid, startfrac, midfrac, linestart, lineend, markframe, segmentmins, segmentmaxs);
5676                         // if we found an impact on the front side, don't waste time
5677                         // exploring the far side
5678                         if (midfrac <= trace->realfraction)
5679                                 Mod_Q3BSP_TraceLine_RecursiveBSPNode(trace, model, node->children[endside], mid, end, midfrac, endfrac, linestart, lineend, markframe, segmentmins, segmentmaxs);
5680                         return;
5681                 }
5682         }
5683         // abort if this part of the bsp tree can not be hit by this trace
5684 //      if (!(node->combinedsupercontents & trace->hitsupercontentsmask))
5685 //              return;
5686         // hit a leaf
5687         nodesegmentmins[0] = min(start[0], end[0]) - 1;
5688         nodesegmentmins[1] = min(start[1], end[1]) - 1;
5689         nodesegmentmins[2] = min(start[2], end[2]) - 1;
5690         nodesegmentmaxs[0] = max(start[0], end[0]) + 1;
5691         nodesegmentmaxs[1] = max(start[1], end[1]) + 1;
5692         nodesegmentmaxs[2] = max(start[2], end[2]) + 1;
5693         // line trace the brushes
5694         leaf = (mleaf_t *)node;
5695         for (i = 0;i < leaf->numleafbrushes;i++)
5696         {
5697                 brush = model->brush.data_brushes[leaf->firstleafbrush[i]].colbrushf;
5698                 if (brush && brush->markframe != markframe && BoxesOverlap(nodesegmentmins, nodesegmentmaxs, brush->mins, brush->maxs))
5699                 {
5700                         brush->markframe = markframe;
5701                         Collision_TraceLineBrushFloat(trace, linestart, lineend, brush, brush);
5702                 }
5703         }
5704         // can't do point traces on curves (they have no thickness)
5705         if (leaf->containscollisionsurfaces && mod_q3bsp_curves_collisions.integer && !VectorCompare(start, end))
5706         {
5707                 // line trace the curves
5708                 for (i = 0;i < leaf->numleafsurfaces;i++)
5709                 {
5710                         surface = model->data_surfaces + leaf->firstleafsurface[i];
5711                         if (surface->num_collisiontriangles && surface->collisionmarkframe != markframe && BoxesOverlap(nodesegmentmins, nodesegmentmaxs, surface->mins, surface->maxs))
5712                         {
5713                                 surface->collisionmarkframe = markframe;
5714                                 Collision_TraceLineTriangleMeshFloat(trace, linestart, lineend, surface->num_collisiontriangles, surface->data_collisionelement3i, surface->data_collisionvertex3f, surface->texture->supercontents, surface->texture->surfaceflags, surface->texture, segmentmins, segmentmaxs);
5715                         }
5716                 }
5717         }
5718 }
5719
5720 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)
5721 {
5722         int i;
5723         int sides;
5724         mleaf_t *leaf;
5725         colbrushf_t *brush;
5726         msurface_t *surface;
5727         mplane_t *plane;
5728         float nodesegmentmins[3], nodesegmentmaxs[3];
5729         // walk the tree until we hit a leaf, recursing for any split cases
5730         while (node->plane)
5731         {
5732                 // abort if this part of the bsp tree can not be hit by this trace
5733 //              if (!(node->combinedsupercontents & trace->hitsupercontentsmask))
5734 //                      return;
5735                 plane = node->plane;
5736                 // axial planes are much more common than non-axial, so an optimized
5737                 // axial case pays off here
5738                 if (plane->type < 3)
5739                 {
5740                         // this is an axial plane, compare bounding box directly to it and
5741                         // recurse sides accordingly
5742                         // recurse down node sides
5743                         // use an inlined axial BoxOnPlaneSide to slightly reduce overhead
5744                         //sides = BoxOnPlaneSide(nodesegmentmins, nodesegmentmaxs, plane);
5745                         //sides = ((segmentmaxs[plane->type] >= plane->dist) | ((segmentmins[plane->type] < plane->dist) << 1));
5746                         sides = ((segmentmaxs[plane->type] >= plane->dist) + ((segmentmins[plane->type] < plane->dist) * 2));
5747                 }
5748                 else
5749                 {
5750                         // this is a non-axial plane, so check if the start and end boxes
5751                         // are both on one side of the plane to handle 'diagonal' cases
5752                         sides = BoxOnPlaneSide(thisbrush_start->mins, thisbrush_start->maxs, plane) | BoxOnPlaneSide(thisbrush_end->mins, thisbrush_end->maxs, plane);
5753                 }
5754                 if (sides == 3)
5755                 {
5756                         // segment crosses plane
5757                         Mod_Q3BSP_TraceBrush_RecursiveBSPNode(trace, model, node->children[0], thisbrush_start, thisbrush_end, markframe, segmentmins, segmentmaxs);
5758                         sides = 2;
5759                 }
5760                 // if sides == 0 then the trace itself is bogus (Not A Number values),
5761                 // in this case we simply pretend the trace hit nothing
5762                 if (sides == 0)
5763                         return; // ERROR: NAN bounding box!
5764                 // take whichever side the segment box is on
5765                 node = node->children[sides - 1];
5766         }
5767         // abort if this part of the bsp tree can not be hit by this trace
5768 //      if (!(node->combinedsupercontents & trace->hitsupercontentsmask))
5769 //              return;
5770         nodesegmentmins[0] = max(segmentmins[0], node->mins[0] - 1);
5771         nodesegmentmins[1] = max(segmentmins[1], node->mins[1] - 1);
5772         nodesegmentmins[2] = max(segmentmins[2], node->mins[2] - 1);
5773         nodesegmentmaxs[0] = min(segmentmaxs[0], node->maxs[0] + 1);
5774         nodesegmentmaxs[1] = min(segmentmaxs[1], node->maxs[1] + 1);
5775         nodesegmentmaxs[2] = min(segmentmaxs[2], node->maxs[2] + 1);
5776         // hit a leaf
5777         leaf = (mleaf_t *)node;
5778         for (i = 0;i < leaf->numleafbrushes;i++)
5779         {
5780                 brush = model->brush.data_brushes[leaf->firstleafbrush[i]].colbrushf;
5781                 if (brush && brush->markframe != markframe && BoxesOverlap(nodesegmentmins, nodesegmentmaxs, brush->mins, brush->maxs))
5782                 {
5783                         brush->markframe = markframe;
5784                         Collision_TraceBrushBrushFloat(trace, thisbrush_start, thisbrush_end, brush, brush);
5785                 }
5786         }
5787         if (leaf->containscollisionsurfaces && mod_q3bsp_curves_collisions.integer)
5788         {
5789                 for (i = 0;i < leaf->numleafsurfaces;i++)
5790                 {
5791                         surface = model->data_surfaces + leaf->firstleafsurface[i];
5792                         if (surface->num_collisiontriangles && surface->collisionmarkframe != markframe && BoxesOverlap(nodesegmentmins, nodesegmentmaxs, surface->mins, surface->maxs))
5793                         {
5794                                 surface->collisionmarkframe = markframe;
5795                                 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);
5796                         }
5797                 }
5798         }
5799 }
5800
5801 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)
5802 {
5803         int i;
5804         float segmentmins[3], segmentmaxs[3];
5805         static int markframe = 0;
5806         msurface_t *surface;
5807         q3mbrush_t *brush;
5808         memset(trace, 0, sizeof(*trace));
5809         trace->fraction = 1;
5810         trace->realfraction = 1;
5811         trace->hitsupercontentsmask = hitsupercontentsmask;
5812         if (mod_q3bsp_optimizedtraceline.integer && VectorLength2(boxmins) + VectorLength2(boxmaxs) == 0)
5813         {
5814                 if (VectorCompare(start, end))
5815                 {
5816                         // point trace
5817                         if (model->brush.submodel)
5818                         {
5819                                 for (i = 0, brush = model->brush.data_brushes + model->firstmodelbrush;i < model->nummodelbrushes;i++, brush++)
5820                                         if (brush->colbrushf)
5821                                                 Collision_TracePointBrushFloat(trace, start, brush->colbrushf);
5822                         }
5823                         else
5824                                 Mod_Q3BSP_TracePoint_RecursiveBSPNode(trace, model, model->brush.data_nodes, start, ++markframe);
5825                 }
5826                 else
5827                 {
5828                         // line trace
5829                         segmentmins[0] = min(start[0], end[0]) - 1;
5830                         segmentmins[1] = min(start[1], end[1]) - 1;
5831                         segmentmins[2] = min(start[2], end[2]) - 1;
5832                         segmentmaxs[0] = max(start[0], end[0]) + 1;
5833                         segmentmaxs[1] = max(start[1], end[1]) + 1;
5834                         segmentmaxs[2] = max(start[2], end[2]) + 1;
5835                         if (model->brush.submodel)
5836                         {
5837                                 for (i = 0, brush = model->brush.data_brushes + model->firstmodelbrush;i < model->nummodelbrushes;i++, brush++)
5838                                         if (brush->colbrushf)
5839                                                 Collision_TraceLineBrushFloat(trace, start, end, brush->colbrushf, brush->colbrushf);
5840                                 if (mod_q3bsp_curves_collisions.integer)
5841                                         for (i = 0, surface = model->data_surfaces + model->firstmodelsurface;i < model->nummodelsurfaces;i++, surface++)
5842                                                 if (surface->num_collisiontriangles)
5843                                                         Collision_TraceLineTriangleMeshFloat(trace, start, end, surface->num_collisiontriangles, surface->data_collisionelement3i, surface->data_collisionvertex3f, surface->texture->supercontents, surface->texture->surfaceflags, surface->texture, segmentmins, segmentmaxs);
5844                         }
5845                         else
5846                                 Mod_Q3BSP_TraceLine_RecursiveBSPNode(trace, model, model->brush.data_nodes, start, end, 0, 1, start, end, ++markframe, segmentmins, segmentmaxs);
5847                 }
5848         }
5849         else
5850         {
5851                 // box trace, performed as brush trace
5852                 colbrushf_t *thisbrush_start, *thisbrush_end;
5853                 vec3_t boxstartmins, boxstartmaxs, boxendmins, boxendmaxs;
5854                 segmentmins[0] = min(start[0], end[0]) + boxmins[0] - 1;
5855                 segmentmins[1] = min(start[1], end[1]) + boxmins[1] - 1;
5856                 segmentmins[2] = min(start[2], end[2]) + boxmins[2] - 1;
5857                 segmentmaxs[0] = max(start[0], end[0]) + boxmaxs[0] + 1;
5858                 segmentmaxs[1] = max(start[1], end[1]) + boxmaxs[1] + 1;
5859                 segmentmaxs[2] = max(start[2], end[2]) + boxmaxs[2] + 1;
5860                 VectorAdd(start, boxmins, boxstartmins);
5861                 VectorAdd(start, boxmaxs, boxstartmaxs);
5862                 VectorAdd(end, boxmins, boxendmins);
5863                 VectorAdd(end, boxmaxs, boxendmaxs);
5864                 thisbrush_start = Collision_BrushForBox(&identitymatrix, boxstartmins, boxstartmaxs, 0, 0, NULL);
5865                 thisbrush_end = Collision_BrushForBox(&identitymatrix, boxendmins, boxendmaxs, 0, 0, NULL);
5866                 if (model->brush.submodel)
5867                 {
5868                         for (i = 0, brush = model->brush.data_brushes + model->firstmodelbrush;i < model->nummodelbrushes;i++, brush++)
5869                                 if (brush->colbrushf)
5870                                         Collision_TraceBrushBrushFloat(trace, thisbrush_start, thisbrush_end, brush->colbrushf, brush->colbrushf);
5871                         if (mod_q3bsp_curves_collisions.integer)
5872                                 for (i = 0, surface = model->data_surfaces + model->firstmodelsurface;i < model->nummodelsurfaces;i++, surface++)
5873                                         if (surface->num_collisiontriangles)
5874                                                 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);
5875                 }
5876                 else
5877                         Mod_Q3BSP_TraceBrush_RecursiveBSPNode(trace, model, model->brush.data_nodes, thisbrush_start, thisbrush_end, ++markframe, segmentmins, segmentmaxs);
5878         }
5879 }
5880
5881 static int Mod_Q3BSP_SuperContentsFromNativeContents(model_t *model, int nativecontents)
5882 {
5883         int supercontents = 0;
5884         if (nativecontents & CONTENTSQ3_SOLID)
5885                 supercontents |= SUPERCONTENTS_SOLID;
5886         if (nativecontents & CONTENTSQ3_WATER)
5887                 supercontents |= SUPERCONTENTS_WATER;
5888         if (nativecontents & CONTENTSQ3_SLIME)
5889                 supercontents |= SUPERCONTENTS_SLIME;
5890         if (nativecontents & CONTENTSQ3_LAVA)
5891                 supercontents |= SUPERCONTENTS_LAVA;
5892         if (nativecontents & CONTENTSQ3_BODY)
5893                 supercontents |= SUPERCONTENTS_BODY;
5894         if (nativecontents & CONTENTSQ3_CORPSE)
5895                 supercontents |= SUPERCONTENTS_CORPSE;
5896         if (nativecontents & CONTENTSQ3_NODROP)
5897                 supercontents |= SUPERCONTENTS_NODROP;
5898         if (nativecontents & CONTENTSQ3_PLAYERCLIP)
5899                 supercontents |= SUPERCONTENTS_PLAYERCLIP;
5900         if (nativecontents & CONTENTSQ3_MONSTERCLIP)
5901                 supercontents |= SUPERCONTENTS_MONSTERCLIP;
5902         if (nativecontents & CONTENTSQ3_DONOTENTER)
5903                 supercontents |= SUPERCONTENTS_DONOTENTER;
5904         return supercontents;
5905 }
5906
5907 static int Mod_Q3BSP_NativeContentsFromSuperContents(model_t *model, int supercontents)
5908 {
5909         int nativecontents = 0;
5910         if (supercontents & SUPERCONTENTS_SOLID)
5911                 nativecontents |= CONTENTSQ3_SOLID;
5912         if (supercontents & SUPERCONTENTS_WATER)
5913                 nativecontents |= CONTENTSQ3_WATER;
5914         if (supercontents & SUPERCONTENTS_SLIME)
5915                 nativecontents |= CONTENTSQ3_SLIME;
5916         if (supercontents & SUPERCONTENTS_LAVA)
5917                 nativecontents |= CONTENTSQ3_LAVA;
5918         if (supercontents & SUPERCONTENTS_BODY)
5919                 nativecontents |= CONTENTSQ3_BODY;
5920         if (supercontents & SUPERCONTENTS_CORPSE)
5921                 nativecontents |= CONTENTSQ3_CORPSE;
5922         if (supercontents & SUPERCONTENTS_NODROP)
5923                 nativecontents |= CONTENTSQ3_NODROP;
5924         if (supercontents & SUPERCONTENTS_PLAYERCLIP)
5925                 nativecontents |= CONTENTSQ3_PLAYERCLIP;
5926         if (supercontents & SUPERCONTENTS_MONSTERCLIP)
5927                 nativecontents |= CONTENTSQ3_MONSTERCLIP;
5928         if (supercontents & SUPERCONTENTS_DONOTENTER)
5929                 nativecontents |= CONTENTSQ3_DONOTENTER;
5930         return nativecontents;
5931 }
5932
5933 void Mod_Q3BSP_RecursiveFindNumLeafs(mnode_t *node)
5934 {
5935         int numleafs;
5936         while (node->plane)
5937         {
5938                 Mod_Q3BSP_RecursiveFindNumLeafs(node->children[0]);
5939                 node = node->children[1];
5940         }
5941         numleafs = ((mleaf_t *)node - loadmodel->brush.data_leafs) + 1;
5942         if (loadmodel->brush.num_leafs < numleafs)
5943                 loadmodel->brush.num_leafs = numleafs;
5944 }
5945
5946 void Mod_Q3BSP_Load(model_t *mod, void *buffer, void *bufferend)
5947 {
5948         int i, j, numshadowmeshtriangles;
5949         q3dheader_t *header;
5950         float corner[3], yawradius, modelradius;
5951         msurface_t *surface;
5952
5953         mod->type = mod_brushq3;
5954         mod->numframes = 2; // although alternate textures are not supported it is annoying to complain about no such frame 1
5955         mod->numskins = 1;
5956
5957         header = (q3dheader_t *)buffer;
5958
5959         i = LittleLong(header->version);
5960         if (i != Q3BSPVERSION)
5961                 Host_Error("Mod_Q3BSP_Load: %s has wrong version number (%i, should be %i)", mod->name, i, Q3BSPVERSION);
5962         mod->brush.ishlbsp = false;
5963         mod->brush.ismcbsp = false;
5964         if (loadmodel->isworldmodel)
5965         {
5966                 Cvar_SetValue("halflifebsp", mod->brush.ishlbsp);
5967                 Cvar_SetValue("mcbsp", mod->brush.ismcbsp);
5968         }
5969
5970         mod->soundfromcenter = true;
5971         mod->TraceBox = Mod_Q3BSP_TraceBox;
5972         mod->brush.TraceLineOfSight = Mod_Q1BSP_TraceLineOfSight;
5973         mod->brush.SuperContentsFromNativeContents = Mod_Q3BSP_SuperContentsFromNativeContents;
5974         mod->brush.NativeContentsFromSuperContents = Mod_Q3BSP_NativeContentsFromSuperContents;
5975         mod->brush.GetPVS = Mod_Q1BSP_GetPVS;
5976         mod->brush.FatPVS = Mod_Q1BSP_FatPVS;
5977         mod->brush.BoxTouchingPVS = Mod_Q1BSP_BoxTouchingPVS;
5978         mod->brush.BoxTouchingLeafPVS = Mod_Q1BSP_BoxTouchingLeafPVS;
5979         mod->brush.BoxTouchingVisibleLeafs = Mod_Q1BSP_BoxTouchingVisibleLeafs;
5980         mod->brush.FindBoxClusters = Mod_Q1BSP_FindBoxClusters;
5981         mod->brush.LightPoint = Mod_Q3BSP_LightPoint;
5982         mod->brush.FindNonSolidLocation = Mod_Q1BSP_FindNonSolidLocation;
5983         mod->brush.PointInLeaf = Mod_Q1BSP_PointInLeaf;
5984         mod->Draw = R_Q1BSP_Draw;
5985         mod->DrawDepth = R_Q1BSP_DrawDepth;
5986         mod->GetLightInfo = R_Q1BSP_GetLightInfo;
5987         mod->CompileShadowVolume = R_Q1BSP_CompileShadowVolume;
5988         mod->DrawShadowVolume = R_Q1BSP_DrawShadowVolume;
5989         mod->DrawLight = R_Q1BSP_DrawLight;
5990
5991         mod_base = (unsigned char *)header;
5992
5993         // swap all the lumps
5994         header->ident = LittleLong(header->ident);
5995         header->version = LittleLong(header->version);
5996         for (i = 0;i < Q3HEADER_LUMPS;i++)
5997         {
5998                 header->lumps[i].fileofs = LittleLong(header->lumps[i].fileofs);
5999                 header->lumps[i].filelen = LittleLong(header->lumps[i].filelen);
6000         }
6001
6002         mod->brush.qw_md4sum = 0;
6003         mod->brush.qw_md4sum2 = 0;
6004         for (i = 0;i < Q3HEADER_LUMPS;i++)
6005         {
6006                 if (i == Q3LUMP_ENTITIES)
6007                         continue;
6008                 mod->brush.qw_md4sum ^= Com_BlockChecksum(mod_base + header->lumps[i].fileofs, header->lumps[i].filelen);
6009                 if (i == Q3LUMP_PVS || i == Q3LUMP_LEAFS || i == Q3LUMP_NODES)
6010                         continue;
6011                 mod->brush.qw_md4sum2 ^= Com_BlockChecksum(mod_base + header->lumps[i].fileofs, header->lumps[i].filelen);
6012         }
6013
6014         Mod_Q3BSP_LoadEntities(&header->lumps[Q3LUMP_ENTITIES]);
6015         Mod_Q3BSP_LoadTextures(&header->lumps[Q3LUMP_TEXTURES]);
6016         Mod_Q3BSP_LoadPlanes(&header->lumps[Q3LUMP_PLANES]);
6017         Mod_Q3BSP_LoadBrushSides(&header->lumps[Q3LUMP_BRUSHSIDES]);
6018         Mod_Q3BSP_LoadBrushes(&header->lumps[Q3LUMP_BRUSHES]);
6019         Mod_Q3BSP_LoadEffects(&header->lumps[Q3LUMP_EFFECTS]);
6020         Mod_Q3BSP_LoadVertices(&header->lumps[Q3LUMP_VERTICES]);
6021         Mod_Q3BSP_LoadTriangles(&header->lumps[Q3LUMP_TRIANGLES]);
6022         Mod_Q3BSP_LoadLightmaps(&header->lumps[Q3LUMP_LIGHTMAPS], &header->lumps[Q3LUMP_FACES]);
6023         Mod_Q3BSP_LoadFaces(&header->lumps[Q3LUMP_FACES]);
6024         Mod_Q3BSP_LoadModels(&header->lumps[Q3LUMP_MODELS]);
6025         Mod_Q3BSP_LoadLeafBrushes(&header->lumps[Q3LUMP_LEAFBRUSHES]);
6026         Mod_Q3BSP_LoadLeafFaces(&header->lumps[Q3LUMP_LEAFFACES]);
6027         Mod_Q3BSP_LoadLeafs(&header->lumps[Q3LUMP_LEAFS]);
6028         Mod_Q3BSP_LoadNodes(&header->lumps[Q3LUMP_NODES]);
6029         Mod_Q3BSP_LoadLightGrid(&header->lumps[Q3LUMP_LIGHTGRID]);
6030         Mod_Q3BSP_LoadPVS(&header->lumps[Q3LUMP_PVS]);
6031         loadmodel->brush.numsubmodels = loadmodel->brushq3.num_models;
6032
6033         // the MakePortals code works fine on the q3bsp data as well
6034         Mod_Q1BSP_MakePortals();
6035
6036         // FIXME: shader alpha should replace r_wateralpha support in q3bsp
6037         loadmodel->brush.supportwateralpha = true;
6038
6039         // make a single combined shadow mesh to allow optimized shadow volume creation
6040         numshadowmeshtriangles = 0;
6041         for (j = 0, surface = loadmodel->data_surfaces;j < loadmodel->num_surfaces;j++, surface++)
6042         {
6043                 surface->num_firstshadowmeshtriangle = numshadowmeshtriangles;
6044                 numshadowmeshtriangles += surface->num_triangles;
6045         }
6046         loadmodel->brush.shadowmesh = Mod_ShadowMesh_Begin(loadmodel->mempool, numshadowmeshtriangles * 3, numshadowmeshtriangles, NULL, NULL, NULL, false, false, true);
6047         for (j = 0, surface = loadmodel->data_surfaces;j < loadmodel->num_surfaces;j++, surface++)
6048                 if (surface->num_triangles > 0)
6049                         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));
6050         loadmodel->brush.shadowmesh = Mod_ShadowMesh_Finish(loadmodel->mempool, loadmodel->brush.shadowmesh, false, true, false);
6051         Mod_BuildTriangleNeighbors(loadmodel->brush.shadowmesh->neighbor3i, loadmodel->brush.shadowmesh->element3i, loadmodel->brush.shadowmesh->numtriangles);
6052
6053         loadmodel->brush.num_leafs = 0;
6054         Mod_Q3BSP_RecursiveFindNumLeafs(loadmodel->brush.data_nodes);
6055
6056         if (loadmodel->isworldmodel)
6057         {
6058                 // clear out any stale submodels or worldmodels lying around
6059                 // if we did this clear before now, an error might abort loading and
6060                 // leave things in a bad state
6061                 Mod_RemoveStaleWorldModels(loadmodel);
6062         }
6063
6064         mod = loadmodel;
6065         for (i = 0;i < loadmodel->brush.numsubmodels;i++)
6066         {
6067                 if (i > 0)
6068                 {
6069                         char name[10];
6070                         // LordHavoc: only register submodels if it is the world
6071                         // (prevents external bsp models from replacing world submodels with
6072                         //  their own)
6073                         if (!loadmodel->isworldmodel)
6074                                 continue;
6075                         // duplicate the basic information
6076                         sprintf(name, "*%i", i);
6077                         mod = Mod_FindName(name);
6078                         *mod = *loadmodel;
6079                         strlcpy(mod->name, name, sizeof(mod->name));
6080                         // textures and memory belong to the main model
6081                         mod->texturepool = NULL;
6082                         mod->mempool = NULL;
6083                         mod->brush.TraceLineOfSight = NULL;
6084                         mod->brush.GetPVS = NULL;
6085                         mod->brush.FatPVS = NULL;
6086                         mod->brush.BoxTouchingPVS = NULL;
6087                         mod->brush.BoxTouchingLeafPVS = NULL;
6088                         mod->brush.BoxTouchingVisibleLeafs = NULL;
6089                         mod->brush.FindBoxClusters = NULL;
6090                         mod->brush.LightPoint = NULL;
6091                         mod->brush.FindNonSolidLocation = Mod_Q1BSP_FindNonSolidLocation;
6092                 }
6093                 mod->brush.submodel = i;
6094
6095                 // make the model surface list (used by shadowing/lighting)
6096                 mod->firstmodelsurface = mod->brushq3.data_models[i].firstface;
6097                 mod->nummodelsurfaces = mod->brushq3.data_models[i].numfaces;
6098                 mod->firstmodelbrush = mod->brushq3.data_models[i].firstbrush;
6099                 mod->nummodelbrushes = mod->brushq3.data_models[i].numbrushes;
6100                 mod->surfacelist = (int *)Mem_Alloc(loadmodel->mempool, mod->nummodelsurfaces * sizeof(*mod->surfacelist));
6101                 for (j = 0;j < mod->nummodelsurfaces;j++)
6102                         mod->surfacelist[j] = mod->firstmodelsurface + j;
6103
6104                 VectorCopy(mod->brushq3.data_models[i].mins, mod->normalmins);
6105                 VectorCopy(mod->brushq3.data_models[i].maxs, mod->normalmaxs);
6106                 corner[0] = max(fabs(mod->normalmins[0]), fabs(mod->normalmaxs[0]));
6107                 corner[1] = max(fabs(mod->normalmins[1]), fabs(mod->normalmaxs[1]));
6108                 corner[2] = max(fabs(mod->normalmins[2]), fabs(mod->normalmaxs[2]));
6109                 modelradius = sqrt(corner[0]*corner[0]+corner[1]*corner[1]+corner[2]*corner[2]);
6110                 yawradius = sqrt(corner[0]*corner[0]+corner[1]*corner[1]);
6111                 mod->rotatedmins[0] = mod->rotatedmins[1] = mod->rotatedmins[2] = -modelradius;
6112                 mod->rotatedmaxs[0] = mod->rotatedmaxs[1] = mod->rotatedmaxs[2] = modelradius;
6113                 mod->yawmaxs[0] = mod->yawmaxs[1] = yawradius;
6114                 mod->yawmins[0] = mod->yawmins[1] = -yawradius;
6115                 mod->yawmins[2] = mod->normalmins[2];
6116                 mod->yawmaxs[2] = mod->normalmaxs[2];
6117                 mod->radius = modelradius;
6118                 mod->radius2 = modelradius * modelradius;
6119
6120                 for (j = 0;j < mod->nummodelsurfaces;j++)
6121                         if (mod->data_surfaces[j + mod->firstmodelsurface].texture->surfaceflags & Q3SURFACEFLAG_SKY)
6122                                 break;
6123                 if (j < mod->nummodelsurfaces)
6124                         mod->DrawSky = R_Q1BSP_DrawSky;
6125                 else
6126                         mod->DrawSky = NULL;
6127         }
6128 }
6129
6130 void Mod_IBSP_Load(model_t *mod, void *buffer, void *bufferend)
6131 {
6132         int i = LittleLong(((int *)buffer)[1]);
6133         if (i == Q3BSPVERSION)
6134                 Mod_Q3BSP_Load(mod,buffer, bufferend);
6135         else if (i == Q2BSPVERSION)
6136                 Mod_Q2BSP_Load(mod,buffer, bufferend);
6137         else
6138                 Host_Error("Mod_IBSP_Load: unknown/unsupported version %i", i);
6139 }
6140
6141 void Mod_MAP_Load(model_t *mod, void *buffer, void *bufferend)
6142 {
6143         Host_Error("Mod_MAP_Load: not yet implemented");
6144 }
6145
6146 qboolean Mod_CanSeeBox_Trace(int numsamples, float t, model_t *model, vec3_t eye, vec3_t minsX, vec3_t maxsX)
6147 {
6148         // we already have done PVS culling at this point...
6149         // so we don't need to do it again.
6150
6151         int i;
6152         vec3_t testorigin, mins, maxs;
6153
6154         testorigin[0] = (minsX[0] + maxsX[0]) * 0.5;
6155         testorigin[1] = (minsX[1] + maxsX[1]) * 0.5;
6156         testorigin[2] = (minsX[2] + maxsX[2]) * 0.5;
6157
6158         if(model->brush.TraceLineOfSight(model, eye, testorigin))
6159                 return 1;
6160
6161         // expand the box a little
6162         mins[0] = (t+1) * minsX[0] - t * maxsX[0];
6163         maxs[0] = (t+1) * maxsX[0] - t * minsX[0];
6164         mins[1] = (t+1) * minsX[1] - t * maxsX[1];
6165         maxs[1] = (t+1) * maxsX[1] - t * minsX[1];
6166         mins[2] = (t+1) * minsX[2] - t * maxsX[2];
6167         maxs[2] = (t+1) * maxsX[2] - t * minsX[2];
6168
6169         for(i = 0; i != numsamples; ++i)
6170         {
6171                 testorigin[0] = lhrandom(mins[0], maxs[0]);
6172                 testorigin[1] = lhrandom(mins[1], maxs[1]);
6173                 testorigin[2] = lhrandom(mins[2], maxs[2]);
6174
6175                 if(model->brush.TraceLineOfSight(model, eye, testorigin))
6176                         return 1;
6177         }
6178
6179         return 0;
6180 }
6181