model_alias.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
  23 static cvar_t r_mipskins = {CVAR_SAVE, "r_mipskins", "0"};
  24
  25 void Mod_AliasInit (void)
  26 {
  27         Cvar_RegisterVariable(&r_mipskins);
  28 }
  29
  30 static void Mod_Alias_SERAddEntity(void)
  31 {
  32         R_Clip_AddBox(currentrenderentity->mins, currentrenderentity->maxs, R_Entity_Callback, currentrenderentity, NULL);
  33 }
  34
  35 // LordHavoc: proper bounding box considerations
  36 static float aliasbboxmin[3], aliasbboxmax[3], modelyawradius, modelradius;
  37
  38 static float vertst[MAXALIASVERTS][2];
  39 static int vertusage[MAXALIASVERTS];
  40 static int vertonseam[MAXALIASVERTS];
  41 static int vertremap[MAXALIASVERTS];
  42 static int temptris[MAXALIASTRIS][3];
  43
  44 static void Mod_ConvertAliasVerts (int inverts, vec3_t scale, vec3_t translate, trivertx_t *v, trivertx_t *out)
  45 {
  46         int i, j, invalidnormals = 0;
  47         float dist;
  48         vec3_t temp;
  49         for (i = 0;i < inverts;i++)
  50         {
  51                 if (vertremap[i] < 0 && vertremap[i+inverts] < 0) // only used vertices need apply...
  52                         continue;
  53
  54                 temp[0] = v[i].v[0] * scale[0] + translate[0];
  55                 temp[1] = v[i].v[1] * scale[1] + translate[1];
  56                 temp[2] = v[i].v[2] * scale[2] + translate[2];
  57                 // update bounding box
  58                 if (temp[0] < aliasbboxmin[0]) aliasbboxmin[0] = temp[0];
  59                 if (temp[1] < aliasbboxmin[1]) aliasbboxmin[1] = temp[1];
  60                 if (temp[2] < aliasbboxmin[2]) aliasbboxmin[2] = temp[2];
  61                 if (temp[0] > aliasbboxmax[0]) aliasbboxmax[0] = temp[0];
  62                 if (temp[1] > aliasbboxmax[1]) aliasbboxmax[1] = temp[1];
  63                 if (temp[2] > aliasbboxmax[2]) aliasbboxmax[2] = temp[2];
  64                 dist = temp[0]*temp[0]+temp[1]*temp[1];
  65                 if (modelyawradius < dist)
  66                         modelyawradius = dist;
  67                 dist += temp[2]*temp[2];
  68                 if (modelradius < dist)
  69                         modelradius = dist;
  70
  71                 j = vertremap[i]; // not onseam
  72                 if (j >= 0)
  73                 {
  74                         VectorCopy(v[i].v, out[j].v);
  75                         out[j].lightnormalindex = v[i].lightnormalindex;
  76                         if (out[j].lightnormalindex >= NUMVERTEXNORMALS)
  77                         {
  78                                 invalidnormals++;
  79                                 out[j].lightnormalindex = 0;
  80                         }
  81                 }
  82                 j = vertremap[i+inverts]; // onseam
  83                 if (j >= 0)
  84                 {
  85                         VectorCopy(v[i].v, out[j].v);
  86                         out[j].lightnormalindex = v[i].lightnormalindex;
  87                         if (out[j].lightnormalindex >= NUMVERTEXNORMALS)
  88                         {
  89                                 invalidnormals++;
  90                                 out[j].lightnormalindex = 0;
  91                         }
  92                 }
  93         }
  94         if (invalidnormals)
  95                 Con_Printf("Mod_ConvertAliasVerts: \"%s\", %i invalid normal indices found\n", loadmodel->name, invalidnormals);
  96 }
  97
  98 static void Mod_MDL_LoadFrames (qbyte * datapointer, int inverts, int outverts, vec3_t scale, vec3_t translate)
  99 {
 100         daliasframetype_t       *pframetype;
 101         daliasframe_t           *pinframe;
 102         daliasgroup_t           *group;
 103         daliasinterval_t        *intervals;
 104         int                                     i, f, pose, groupframes;
 105         float                           interval;
 106         animscene_t                     *scene;
 107         pose = 0;
 108         scene = loadmodel->animscenes;
 109         for (f = 0;f < loadmodel->numframes;f++)
 110         {
 111                 pframetype = (daliasframetype_t *)datapointer;
 112                 datapointer += sizeof(daliasframetype_t);
 113                 if (LittleLong (pframetype->type) == ALIAS_SINGLE)
 114                 {
 115                         // a single frame is still treated as a group
 116                         interval = 0.1f;
 117                         groupframes = 1;
 118                 }
 119                 else
 120                 {
 121                         // read group header
 122                         group = (daliasgroup_t *)datapointer;
 123                         datapointer += sizeof(daliasgroup_t);
 124                         groupframes = LittleLong (group->numframes);
 125
 126                         // intervals (time per frame)
 127                         intervals = (daliasinterval_t *)datapointer;
 128                         datapointer += sizeof(daliasinterval_t) * groupframes;
 129
 130                         interval = LittleFloat (intervals->interval); // FIXME: support variable framerate groups
 131                         if (interval < 0.01f)
 132                                 Host_Error("Mod_LoadAliasGroup: invalid interval");
 133                 }
 134
 135                 // get scene name from first frame
 136                 pinframe = (daliasframe_t *)datapointer;
 137
 138                 strcpy(scene->name, pinframe->name);
 139                 scene->firstframe = pose;
 140                 scene->framecount = groupframes;
 141                 scene->framerate = 1.0f / interval;
 142                 scene->loop = true;
 143                 scene++;
 144
 145                 // read frames
 146                 for (i = 0;i < groupframes;i++)
 147                 {
 148                         pinframe = (daliasframe_t *)datapointer;
 149                         datapointer += sizeof(daliasframe_t);
 150
 151                         // convert to MD2 frame headers
 152                         strcpy(loadmodel->mdlmd2data_frames[pose].name, pinframe->name);
 153                         VectorCopy(scale, loadmodel->mdlmd2data_frames[pose].scale);
 154                         VectorCopy(translate, loadmodel->mdlmd2data_frames[pose].translate);
 155
 156                         Mod_ConvertAliasVerts(inverts, scale, translate, (trivertx_t *)datapointer, loadmodel->mdlmd2data_pose + pose * outverts);
 157                         datapointer += sizeof(trivertx_t) * inverts;
 158                         pose++;
 159                 }
 160         }
 161 }
 162
 163 static rtexture_t *GL_SkinSplitShirt(qbyte *in, qbyte *out, int width, int height, int bits, char *name, int precache)
 164 {
 165         int i, pixels, passed;
 166         qbyte pixeltest[16];
 167         for (i = 0;i < 16;i++)
 168                 pixeltest[i] = (bits & (1 << i)) != 0;
 169         pixels = width*height;
 170         passed = 0;
 171         while(pixels--)
 172         {
 173                 if (pixeltest[*in >> 4] && *in != 0 && *in != 255)
 174                 {
 175                         passed++;
 176                         // turn to white while copying
 177                         if (*in >= 128 && *in < 224) // backwards ranges
 178                                 *out = (*in & 15) ^ 15;
 179                         else
 180                                 *out = *in & 15;
 181                 }
 182                 else
 183                         *out = 0;
 184                 in++;
 185                 out++;
 186         }
 187         if (passed)
 188                 return R_LoadTexture (loadmodel->texturepool, name, width, height, out - width*height, TEXTYPE_QPALETTE, (r_mipskins.integer ? TEXF_MIPMAP : 0) | (precache ? TEXF_PRECACHE : 0));
 189         else
 190                 return NULL;
 191 }
 192
 193 static rtexture_t *GL_SkinSplit(qbyte *in, qbyte *out, int width, int height, int bits, char *name, int precache)
 194 {
 195         int i, pixels, passed;
 196         qbyte pixeltest[16];
 197         for (i = 0;i < 16;i++)
 198                 pixeltest[i] = (bits & (1 << i)) != 0;
 199         pixels = width*height;
 200         passed = 0;
 201         while(pixels--)
 202         {
 203                 if (pixeltest[*in >> 4] && *in != 0 && *in != 255)
 204                 {
 205                         passed++;
 206                         *out = *in;
 207                 }
 208                 else
 209                         *out = 0;
 210                 in++;
 211                 out++;
 212         }
 213         if (passed)
 214                 return R_LoadTexture (loadmodel->texturepool, name, width, height, out - width*height, TEXTYPE_QPALETTE, (r_mipskins.integer ? TEXF_MIPMAP : 0) | (precache ? TEXF_PRECACHE : 0));
 215         else
 216                 return NULL;
 217 }
 218
 219 static void Mod_LoadSkin (char *basename, qbyte *skindata, qbyte *skintemp, int width, int height, skinframe_t *skinframe, int precache)
 220 {
 221         skinframe->base   = loadtextureimagewithmask(loadmodel->texturepool, va("%s_normal", basename), 0, 0, false, r_mipskins.integer, precache);
 222         skinframe->fog    = image_masktex;
 223         skinframe->pants  = NULL;
 224         skinframe->shirt  = NULL;
 225         skinframe->glow   = loadtextureimage(loadmodel->texturepool, va("%s_glow"  , basename), 0, 0, false, r_mipskins.integer, precache);
 226         skinframe->merged = NULL;
 227         if (skinframe->base)
 228         {
 229                 skinframe->pants  = loadtextureimage(loadmodel->texturepool, va("%s_pants" , basename), 0, 0, false, r_mipskins.integer, precache);
 230                 skinframe->shirt  = loadtextureimage(loadmodel->texturepool, va("%s_shirt" , basename), 0, 0, false, r_mipskins.integer, precache);
 231         }
 232         else
 233         {
 234                 skinframe->base   = loadtextureimagewithmask(loadmodel->texturepool, basename, 0, 0, false, true, true);
 235                 skinframe->fog    = image_masktex;
 236                 if (!skinframe->base)
 237                 {
 238                         skinframe->pants  = GL_SkinSplitShirt(skindata, skintemp, width, height, 0x0040, va("%s_pants", basename), false); // pants
 239                         skinframe->shirt  = GL_SkinSplitShirt(skindata, skintemp, width, height, 0x0002, va("%s_shirt", basename), false); // shirt
 240                         skinframe->glow   = GL_SkinSplit     (skindata, skintemp, width, height, 0xC000, va("%s_glow", basename), precache); // glow
 241                         if (skinframe->pants || skinframe->shirt)
 242                         {
 243                                 skinframe->base   = GL_SkinSplit (skindata, skintemp, width, height, 0x3FBD, va("%s_normal", basename), false); // normal (no special colors)
 244                                 skinframe->merged = GL_SkinSplit (skindata, skintemp, width, height, 0x3FFF, va("%s_body", basename), precache); // body (normal + pants + shirt, but not glow)
 245                         }
 246                         else
 247                                 skinframe->base   = GL_SkinSplit (skindata, skintemp, width, height, 0x3FFF, va("%s_base", basename), precache); // no special colors
 248                         // quake model skins don't have alpha
 249                         skinframe->fog = NULL;
 250                 }
 251         }
 252 }
 253
 254 #define BOUNDI(VALUE,MIN,MAX) if (VALUE < MIN || VALUE >= MAX) Host_Error("model %s has an invalid ##VALUE (%d exceeds %d - %d)\n", loadmodel->name, VALUE, MIN, MAX);
 255 #define BOUNDF(VALUE,MIN,MAX) if (VALUE < MIN || VALUE >= MAX) Host_Error("model %s has an invalid ##VALUE (%f exceeds %f - %f)\n", loadmodel->name, VALUE, MIN, MAX);
 256 void Mod_LoadAliasModel (model_t *mod, void *buffer)
 257 {
 258         int                                             i, j, version, numverts, totalposes, totalskins, skinwidth, skinheight, totalverts, groupframes, groupskins;
 259         mdl_t                                   *pinmodel;
 260         stvert_t                                *pinstverts;
 261         dtriangle_t                             *pintriangles;
 262         daliasskintype_t                *pinskintype;
 263         daliasskingroup_t               *pinskingroup;
 264         daliasskininterval_t    *pinskinintervals;
 265         daliasframetype_t               *pinframetype;
 266         daliasgroup_t                   *pinframegroup;
 267         float                                   scales, scalet, scale[3], translate[3], interval;
 268         qbyte                                   *datapointer, *startframes, *startskins;
 269         char                                    name[MAX_QPATH];
 270         qbyte                                   *skintemp = NULL;
 271         modelyawradius = 0;
 272         modelradius = 0;
 273
 274         datapointer = buffer;
 275         pinmodel = (mdl_t *)datapointer;
 276         datapointer += sizeof(mdl_t);
 277
 278         version = LittleLong (pinmodel->version);
 279         if (version != ALIAS_VERSION)
 280                 Host_Error ("%s has wrong version number (%i should be %i)",
 281                                  loadmodel->name, version, ALIAS_VERSION);
 282
 283         loadmodel->type = mod_alias;
 284         loadmodel->aliastype = ALIASTYPE_MDLMD2;
 285
 286         loadmodel->numskins = LittleLong(pinmodel->numskins);
 287         BOUNDI(loadmodel->numskins,0,256);
 288         skinwidth = LittleLong (pinmodel->skinwidth);
 289         BOUNDI(skinwidth,0,4096);
 290         skinheight = LittleLong (pinmodel->skinheight);
 291         BOUNDI(skinheight,0,4096);
 292         loadmodel->numverts = numverts = LittleLong(pinmodel->numverts);
 293         BOUNDI(loadmodel->numverts,0,MAXALIASVERTS);
 294         loadmodel->numtris = LittleLong(pinmodel->numtris);
 295         BOUNDI(loadmodel->numtris,0,MAXALIASTRIS);
 296         loadmodel->numframes = LittleLong(pinmodel->numframes);
 297         BOUNDI(loadmodel->numframes,0,65536);
 298         loadmodel->synctype = LittleLong (pinmodel->synctype);
 299         BOUNDI(loadmodel->synctype,0,2);
 300         loadmodel->flags = LittleLong (pinmodel->flags);
 301
 302         for (i = 0;i < 3;i++)
 303         {
 304                 scale[i] = LittleFloat (pinmodel->scale[i]);
 305                 translate[i] = LittleFloat (pinmodel->scale_origin[i]);
 306         }
 307
 308         startskins = datapointer;
 309         totalskins = 0;
 310         for (i = 0;i < loadmodel->numskins;i++)
 311         {
 312                 pinskintype = (daliasskintype_t *)datapointer;
 313                 datapointer += sizeof(daliasskintype_t);
 314                 if (LittleLong(pinskintype->type) == ALIAS_SKIN_SINGLE)
 315                         groupskins = 1;
 316                 else
 317                 {
 318                         pinskingroup = (daliasskingroup_t *)datapointer;
 319                         datapointer += sizeof(daliasskingroup_t);
 320                         groupskins = LittleLong(pinskingroup->numskins);
 321                         datapointer += sizeof(daliasskininterval_t) * groupskins;
 322                 }
 323
 324                 for (j = 0;j < groupskins;j++)
 325                 {
 326                         datapointer += skinwidth * skinheight;
 327                         totalskins++;
 328                 }
 329         }
 330
 331         pinstverts = (stvert_t *)datapointer;
 332         datapointer += sizeof(stvert_t) * numverts;
 333
 334         pintriangles = (dtriangle_t *)datapointer;
 335         datapointer += sizeof(dtriangle_t) * loadmodel->numtris;
 336
 337         startframes = datapointer;
 338         totalposes = 0;
 339         for (i = 0;i < loadmodel->numframes;i++)
 340         {
 341                 pinframetype = (daliasframetype_t *)datapointer;
 342                 datapointer += sizeof(daliasframetype_t);
 343                 if (LittleLong (pinframetype->type) == ALIAS_SINGLE)
 344                         groupframes = 1;
 345                 else
 346                 {
 347                         pinframegroup = (daliasgroup_t *)datapointer;
 348                         datapointer += sizeof(daliasgroup_t);
 349                         groupframes = LittleLong(pinframegroup->numframes);
 350                         datapointer += sizeof(daliasinterval_t) * groupframes;
 351                 }
 352
 353                 for (j = 0;j < groupframes;j++)
 354                 {
 355                         datapointer += sizeof(daliasframe_t);
 356                         datapointer += sizeof(trivertx_t) * numverts;
 357                         totalposes++;
 358                 }
 359         }
 360
 361         // load the skins
 362         skintemp = Mem_Alloc(tempmempool, skinwidth * skinheight);
 363         loadmodel->skinscenes = Mem_Alloc(loadmodel->mempool, loadmodel->numskins * sizeof(animscene_t));
 364         loadmodel->skinframes = Mem_Alloc(loadmodel->mempool, totalskins * sizeof(skinframe_t));
 365         totalskins = 0;
 366         datapointer = startskins;
 367         for (i = 0;i < loadmodel->numskins;i++)
 368         {
 369                 pinskintype = (daliasskintype_t *)datapointer;
 370                 datapointer += sizeof(daliasskintype_t);
 371
 372                 if (pinskintype->type == ALIAS_SKIN_SINGLE)
 373                 {
 374                         groupskins = 1;
 375                         interval = 0.1f;
 376                 }
 377                 else
 378                 {
 379                         pinskingroup = (daliasskingroup_t *)datapointer;
 380                         datapointer += sizeof(daliasskingroup_t);
 381
 382                         groupskins = LittleLong (pinskingroup->numskins);
 383
 384                         pinskinintervals = (daliasskininterval_t *)datapointer;
 385                         datapointer += sizeof(daliasskininterval_t) * groupskins;
 386
 387                         interval = LittleFloat(pinskinintervals[0].interval);
 388                         if (interval < 0.01f)
 389                                 Host_Error("Mod_LoadAliasModel: invalid interval\n");
 390                 }
 391
 392                 sprintf(loadmodel->skinscenes[i].name, "skin %i", i);
 393                 loadmodel->skinscenes[i].firstframe = totalskins;
 394                 loadmodel->skinscenes[i].framecount = groupskins;
 395                 loadmodel->skinscenes[i].framerate = 1.0f / interval;
 396                 loadmodel->skinscenes[i].loop = true;
 397
 398                 for (j = 0;j < groupskins;j++)
 399                 {
 400                         if (groupskins > 1)
 401                                 sprintf (name, "%s_%i_%i", loadmodel->name, i, j);
 402                         else
 403                                 sprintf (name, "%s_%i", loadmodel->name, i);
 404                         Mod_LoadSkin(name, (qbyte *)datapointer, skintemp, skinwidth, skinheight, loadmodel->skinframes + totalskins, i == 0);
 405                         datapointer += skinwidth * skinheight;
 406                         totalskins++;
 407                 }
 408         }
 409         Mem_Free(skintemp);
 410
 411         // store texture coordinates into temporary array, they will be stored after usage is determined (triangle data)
 412         scales = 1.0 / skinwidth;
 413         scalet = 1.0 / skinheight;
 414         for (i = 0;i < numverts;i++)
 415         {
 416                 vertonseam[i] = LittleLong(pinstverts[i].onseam);
 417                 vertst[i][0] = LittleLong(pinstverts[i].s) * scales;
 418                 vertst[i][1] = LittleLong(pinstverts[i].t) * scalet;
 419                 vertst[i+numverts][0] = vertst[i][0] + 0.5;
 420                 vertst[i+numverts][1] = vertst[i][1];
 421                 vertusage[i] = 0;
 422                 vertusage[i+numverts] = 0;
 423         }
 424
 425 // load triangle data
 426         loadmodel->mdlmd2data_indices = Mem_Alloc(loadmodel->mempool, sizeof(int[3]) * loadmodel->numtris);
 427
 428         // count the vertices used
 429         for (i = 0;i < numverts*2;i++)
 430                 vertusage[i] = 0;
 431         for (i = 0;i < loadmodel->numtris;i++)
 432         {
 433                 temptris[i][0] = LittleLong(pintriangles[i].vertindex[0]);
 434                 temptris[i][1] = LittleLong(pintriangles[i].vertindex[1]);
 435                 temptris[i][2] = LittleLong(pintriangles[i].vertindex[2]);
 436                 if (!LittleLong(pintriangles[i].facesfront)) // backface
 437                 {
 438                         if (vertonseam[temptris[i][0]]) temptris[i][0] += numverts;
 439                         if (vertonseam[temptris[i][1]]) temptris[i][1] += numverts;
 440                         if (vertonseam[temptris[i][2]]) temptris[i][2] += numverts;
 441                 }
 442                 vertusage[temptris[i][0]]++;
 443                 vertusage[temptris[i][1]]++;
 444                 vertusage[temptris[i][2]]++;
 445         }
 446         // build remapping table and compact array
 447         totalverts = 0;
 448         for (i = 0;i < numverts*2;i++)
 449         {
 450                 if (vertusage[i])
 451                 {
 452                         vertremap[i] = totalverts;
 453                         vertst[totalverts][0] = vertst[i][0];
 454                         vertst[totalverts][1] = vertst[i][1];
 455                         totalverts++;
 456                 }
 457                 else
 458                         vertremap[i] = -1; // not used at all
 459         }
 460         loadmodel->numverts = totalverts;
 461         // remap the triangle references
 462         for (i = 0;i < loadmodel->numtris;i++)
 463         {
 464                 loadmodel->mdlmd2data_indices[i*3+0] = vertremap[temptris[i][0]];
 465                 loadmodel->mdlmd2data_indices[i*3+1] = vertremap[temptris[i][1]];
 466                 loadmodel->mdlmd2data_indices[i*3+2] = vertremap[temptris[i][2]];
 467         }
 468         // store the texture coordinates
 469         loadmodel->mdlmd2data_texcoords = Mem_Alloc(loadmodel->mempool, sizeof(float[2]) * totalverts);
 470         for (i = 0;i < totalverts;i++)
 471         {
 472                 loadmodel->mdlmd2data_texcoords[i*2+0] = vertst[i][0];
 473                 loadmodel->mdlmd2data_texcoords[i*2+1] = vertst[i][1];
 474         }
 475
 476 // load the frames
 477         loadmodel->animscenes = Mem_Alloc(loadmodel->mempool, sizeof(animscene_t) * loadmodel->numframes);
 478         loadmodel->mdlmd2data_frames = Mem_Alloc(loadmodel->mempool, sizeof(md2frame_t) * totalposes);
 479         loadmodel->mdlmd2data_pose = Mem_Alloc(loadmodel->mempool, sizeof(trivertx_t) * totalposes * totalverts);
 480
 481         // LordHavoc: doing proper bbox for model
 482         aliasbboxmin[0] = aliasbboxmin[1] = aliasbboxmin[2] = 1000000000;
 483         aliasbboxmax[0] = aliasbboxmax[1] = aliasbboxmax[2] = -1000000000;
 484
 485         Mod_MDL_LoadFrames (startframes, numverts, totalverts, scale, translate);
 486
 487         modelyawradius = sqrt(modelyawradius);
 488         modelradius = sqrt(modelradius);
 489         for (j = 0;j < 3;j++)
 490         {
 491                 loadmodel->normalmins[j] = aliasbboxmin[j];
 492                 loadmodel->normalmaxs[j] = aliasbboxmax[j];
 493                 loadmodel->rotatedmins[j] = -modelradius;
 494                 loadmodel->rotatedmaxs[j] = modelradius;
 495         }
 496         loadmodel->yawmins[0] = loadmodel->yawmins[1] = -(loadmodel->yawmaxs[0] = loadmodel->yawmaxs[1] = modelyawradius);
 497         loadmodel->yawmins[2] = loadmodel->normalmins[2];
 498         loadmodel->yawmaxs[2] = loadmodel->normalmaxs[2];
 499
 500         loadmodel->SERAddEntity = Mod_Alias_SERAddEntity;
 501         loadmodel->Draw = R_DrawAliasModel;
 502         loadmodel->DrawSky = NULL;
 503         loadmodel->DrawShadow = NULL;
 504 }
 505
 506 static void Mod_MD2_ConvertVerts (vec3_t scale, vec3_t translate, trivertx_t *v, trivertx_t *out, int *vertremap)
 507 {
 508         int i, invalidnormals = 0;
 509         float dist;
 510         trivertx_t *in;
 511         vec3_t temp;
 512         for (i = 0;i < loadmodel->numverts;i++)
 513         {
 514                 in = v + vertremap[i];
 515                 VectorCopy(in->v, out[i].v);
 516                 temp[0] = in->v[0] * scale[0] + translate[0];
 517                 temp[1] = in->v[1] * scale[1] + translate[1];
 518                 temp[2] = in->v[2] * scale[2] + translate[2];
 519                 // update bounding box
 520                 if (temp[0] < aliasbboxmin[0]) aliasbboxmin[0] = temp[0];
 521                 if (temp[1] < aliasbboxmin[1]) aliasbboxmin[1] = temp[1];
 522                 if (temp[2] < aliasbboxmin[2]) aliasbboxmin[2] = temp[2];
 523                 if (temp[0] > aliasbboxmax[0]) aliasbboxmax[0] = temp[0];
 524                 if (temp[1] > aliasbboxmax[1]) aliasbboxmax[1] = temp[1];
 525                 if (temp[2] > aliasbboxmax[2]) aliasbboxmax[2] = temp[2];
 526                 dist = temp[0]*temp[0]+temp[1]*temp[1];
 527                 if (modelyawradius < dist)
 528                         modelyawradius = dist;
 529                 dist += temp[2]*temp[2];
 530                 if (modelradius < dist)
 531                         modelradius = dist;
 532                 out[i].lightnormalindex = in->lightnormalindex;
 533                 if (out[i].lightnormalindex >= NUMVERTEXNORMALS)
 534                 {
 535                         invalidnormals++;
 536                         out[i].lightnormalindex = 0;
 537                 }
 538         }
 539         if (invalidnormals)
 540                 Con_Printf("Mod_MD2_ConvertVerts: \"%s\", %i invalid normal indices found\n", loadmodel->name, invalidnormals);
 541 }
 542
 543 void Mod_LoadQ2AliasModel (model_t *mod, void *buffer)
 544 {
 545         int *vertremap;
 546         md2_t *pinmodel;
 547         qbyte *base;
 548         int version, end;
 549         int i, j, k, hashindex, num, numxyz, numst, xyz, st;
 550         float *stverts, s, t;
 551         struct md2verthash_s
 552         {
 553                 struct md2verthash_s *next;
 554                 int xyz;
 555                 float st[2];
 556         }
 557         *hash, **md2verthash, *md2verthashdata;
 558         qbyte *datapointer;
 559         md2frame_t *pinframe;
 560         char *inskin;
 561         md2triangle_t *intri;
 562         unsigned short *inst;
 563         int skinwidth, skinheight;
 564
 565         pinmodel = buffer;
 566         base = buffer;
 567
 568         version = LittleLong (pinmodel->version);
 569         if (version != MD2ALIAS_VERSION)
 570                 Host_Error ("%s has wrong version number (%i should be %i)",
 571                         loadmodel->name, version, MD2ALIAS_VERSION);
 572
 573         loadmodel->type = mod_alias;
 574         loadmodel->aliastype = ALIASTYPE_MDLMD2;
 575         loadmodel->SERAddEntity = Mod_Alias_SERAddEntity;
 576         loadmodel->Draw = R_DrawAliasModel;
 577         loadmodel->DrawSky = NULL;
 578         loadmodel->DrawShadow = NULL;
 579
 580         if (LittleLong(pinmodel->num_tris < 1) || LittleLong(pinmodel->num_tris) > MD2MAX_TRIANGLES)
 581                 Host_Error ("%s has invalid number of triangles: %i", loadmodel->name, LittleLong(pinmodel->num_tris));
 582         if (LittleLong(pinmodel->num_xyz < 1) || LittleLong(pinmodel->num_xyz) > MD2MAX_VERTS)
 583                 Host_Error ("%s has invalid number of vertices: %i", loadmodel->name, LittleLong(pinmodel->num_xyz));
 584         if (LittleLong(pinmodel->num_frames < 1) || LittleLong(pinmodel->num_frames) > MD2MAX_FRAMES)
 585                 Host_Error ("%s has invalid number of frames: %i", loadmodel->name, LittleLong(pinmodel->num_frames));
 586         if (LittleLong(pinmodel->num_skins < 0) || LittleLong(pinmodel->num_skins) > MAX_SKINS)
 587                 Host_Error ("%s has invalid number of skins: %i", loadmodel->name, LittleLong(pinmodel->num_skins));
 588
 589         end = LittleLong(pinmodel->ofs_end);
 590         if (LittleLong(pinmodel->num_skins) >= 1 && (LittleLong(pinmodel->ofs_skins <= 0) || LittleLong(pinmodel->ofs_skins) >= end))
 591                 Host_Error ("%s is not a valid model", loadmodel->name);
 592         if (LittleLong(pinmodel->ofs_st <= 0) || LittleLong(pinmodel->ofs_st) >= end)
 593                 Host_Error ("%s is not a valid model", loadmodel->name);
 594         if (LittleLong(pinmodel->ofs_tris <= 0) || LittleLong(pinmodel->ofs_tris) >= end)
 595                 Host_Error ("%s is not a valid model", loadmodel->name);
 596         if (LittleLong(pinmodel->ofs_frames <= 0) || LittleLong(pinmodel->ofs_frames) >= end)
 597                 Host_Error ("%s is not a valid model", loadmodel->name);
 598         if (LittleLong(pinmodel->ofs_glcmds <= 0) || LittleLong(pinmodel->ofs_glcmds) >= end)
 599                 Host_Error ("%s is not a valid model", loadmodel->name);
 600
 601         loadmodel->numskins = LittleLong(pinmodel->num_skins);
 602         numxyz = LittleLong(pinmodel->num_xyz);
 603         numst = LittleLong(pinmodel->num_st);
 604         loadmodel->numtris = LittleLong(pinmodel->num_tris);
 605         loadmodel->numframes = LittleLong(pinmodel->num_frames);
 606
 607         loadmodel->flags = 0; // there are no MD2 flags
 608         loadmodel->synctype = ST_RAND;
 609
 610         // load the skins
 611         inskin = (void*)(base + LittleLong(pinmodel->ofs_skins));
 612         if (loadmodel->numskins)
 613         {
 614                 loadmodel->skinscenes = Mem_Alloc(loadmodel->mempool, sizeof(animscene_t) * loadmodel->numskins);
 615                 loadmodel->skinframes = Mem_Alloc(loadmodel->mempool, sizeof(skinframe_t) * loadmodel->numskins);
 616                 for (i = 0;i < loadmodel->numskins;i++)
 617                 {
 618                         loadmodel->skinscenes[i].firstframe = i;
 619                         loadmodel->skinscenes[i].framecount = 1;
 620                         loadmodel->skinscenes[i].loop = true;
 621                         loadmodel->skinscenes[i].framerate = 10;
 622                         loadmodel->skinframes[i].base = loadtextureimagewithmask (loadmodel->texturepool, inskin, 0, 0, true, r_mipskins.integer, true);
 623                         loadmodel->skinframes[i].fog = image_masktex;
 624                         loadmodel->skinframes[i].pants = NULL;
 625                         loadmodel->skinframes[i].shirt = NULL;
 626                         loadmodel->skinframes[i].glow = NULL;
 627                         loadmodel->skinframes[i].merged = NULL;
 628                         inskin += MD2MAX_SKINNAME;
 629                 }
 630         }
 631
 632         // load the triangles and stvert data
 633         inst = (void*)(base + LittleLong(pinmodel->ofs_st));
 634         intri = (void*)(base + LittleLong(pinmodel->ofs_tris));
 635         skinwidth = LittleLong(pinmodel->skinwidth);
 636         skinheight = LittleLong(pinmodel->skinheight);
 637
 638         stverts = Mem_Alloc(tempmempool, numst * sizeof(float[2]));
 639         s = 1.0f / skinwidth;
 640         t = 1.0f / skinheight;
 641         for (i = 0;i < numst;i++)
 642         {
 643                 j = (unsigned short) LittleShort(inst[i*2+0]);
 644                 k = (unsigned short) LittleShort(inst[i*2+1]);
 645                 if (j >= skinwidth || k >= skinheight)
 646                 {
 647                         Mem_Free(stverts);
 648                         Host_Error("Mod_MD2_LoadGeometry: invalid skin coordinate (%i %i) on vert %i of model %s\n", j, k, i, loadmodel->name);
 649                 }
 650                 stverts[i*2+0] = j * s;
 651                 stverts[i*2+1] = k * t;
 652         }
 653
 654         md2verthash = Mem_Alloc(tempmempool, 256 * sizeof(hash));
 655         md2verthashdata = Mem_Alloc(tempmempool, loadmodel->numtris * 3 * sizeof(*hash));
 656         // swap the triangle list
 657         num = 0;
 658         loadmodel->mdlmd2data_indices = Mem_Alloc(loadmodel->mempool, loadmodel->numtris * sizeof(int[3]));
 659         for (i = 0;i < loadmodel->numtris;i++)
 660         {
 661                 for (j = 0;j < 3;j++)
 662                 {
 663                         xyz = (unsigned short) LittleShort (intri[i].index_xyz[j]);
 664                         st = (unsigned short) LittleShort (intri[i].index_st[j]);
 665                         if (xyz >= numxyz || st >= numst)
 666                         {
 667                                 Mem_Free(md2verthash);
 668                                 Mem_Free(md2verthashdata);
 669                                 Mem_Free(stverts);
 670                                 if (xyz >= numxyz)
 671                                         Host_Error("Mod_MD2_LoadGeometry: invalid xyz index (%i) on triangle %i of model %s\n", xyz, i, loadmodel->name);
 672                                 if (st >= numst)
 673                                         Host_Error("Mod_MD2_LoadGeometry: invalid st index (%i) on triangle %i of model %s\n", st, i, loadmodel->name);
 674                         }
 675                         s = stverts[st*2+0];
 676                         t = stverts[st*2+1];
 677                         hashindex = (xyz * 17 + st) & 255;
 678                         for (hash = md2verthash[hashindex];hash;hash = hash->next)
 679                                 if (hash->xyz == xyz && hash->st[0] == s && hash->st[1] == t)
 680                                         break;
 681                         if (hash == NULL)
 682                         {
 683                                 hash = md2verthashdata + num++;
 684                                 hash->xyz = xyz;
 685                                 hash->st[0] = s;
 686                                 hash->st[1] = t;
 687                                 hash->next = md2verthash[hashindex];
 688                                 md2verthash[hashindex] = hash;
 689                         }
 690                         loadmodel->mdlmd2data_indices[i*3+j] = (hash - md2verthashdata);
 691                 }
 692         }
 693
 694         Mem_Free(stverts);
 695
 696         loadmodel->numverts = num;
 697         vertremap = Mem_Alloc(loadmodel->mempool, num * sizeof(int));
 698         loadmodel->mdlmd2data_texcoords = Mem_Alloc(loadmodel->mempool, num * sizeof(float[2]));
 699         for (i = 0;i < num;i++)
 700         {
 701                 hash = md2verthashdata + i;
 702                 vertremap[i] = hash->xyz;
 703                 loadmodel->mdlmd2data_texcoords[i*2+0] = hash->st[0];
 704                 loadmodel->mdlmd2data_texcoords[i*2+1] = hash->st[1];
 705         }
 706
 707         Mem_Free(md2verthash);
 708         Mem_Free(md2verthashdata);
 709
 710         // load frames
 711         // LordHavoc: doing proper bbox for model
 712         aliasbboxmin[0] = aliasbboxmin[1] = aliasbboxmin[2] = 1000000000;
 713         aliasbboxmax[0] = aliasbboxmax[1] = aliasbboxmax[2] = -1000000000;
 714         modelyawradius = 0;
 715         modelradius = 0;
 716
 717         datapointer = (base + LittleLong(pinmodel->ofs_frames));
 718         // load the frames
 719         loadmodel->animscenes = Mem_Alloc(loadmodel->mempool, loadmodel->numframes * sizeof(animscene_t));
 720         loadmodel->mdlmd2data_frames = Mem_Alloc(loadmodel->mempool, loadmodel->numframes * sizeof(md2frame_t));
 721         loadmodel->mdlmd2data_pose = Mem_Alloc(loadmodel->mempool, loadmodel->numverts * loadmodel->numframes * sizeof(trivertx_t));
 722
 723         for (i = 0;i < loadmodel->numframes;i++)
 724         {
 725                 pinframe = (md2frame_t *)datapointer;
 726                 datapointer += sizeof(md2frame_t);
 727                 strcpy(loadmodel->mdlmd2data_frames[i].name, pinframe->name);
 728                 for (j = 0;j < 3;j++)
 729                 {
 730                         loadmodel->mdlmd2data_frames[i].scale[j] = LittleFloat(pinframe->scale[j]);
 731                         loadmodel->mdlmd2data_frames[i].translate[j] = LittleFloat(pinframe->translate[j]);
 732                 }
 733                 Mod_MD2_ConvertVerts (loadmodel->mdlmd2data_frames[i].scale, loadmodel->mdlmd2data_frames[i].translate, (void *)datapointer, &loadmodel->mdlmd2data_pose[i * loadmodel->numverts], vertremap);
 734                 datapointer += numxyz * sizeof(trivertx_t);
 735
 736                 strcpy(loadmodel->animscenes[i].name, loadmodel->mdlmd2data_frames[i].name);
 737                 loadmodel->animscenes[i].firstframe = i;
 738                 loadmodel->animscenes[i].framecount = 1;
 739                 loadmodel->animscenes[i].framerate = 10;
 740                 loadmodel->animscenes[i].loop = true;
 741         }
 742
 743         Mem_Free(vertremap);
 744
 745         // LordHavoc: model bbox
 746         modelyawradius = sqrt(modelyawradius);
 747         modelradius = sqrt(modelradius);
 748         for (j = 0;j < 3;j++)
 749         {
 750                 loadmodel->normalmins[j] = aliasbboxmin[j];
 751                 loadmodel->normalmaxs[j] = aliasbboxmax[j];
 752                 loadmodel->rotatedmins[j] = -modelradius;
 753                 loadmodel->rotatedmaxs[j] = modelradius;
 754         }
 755         loadmodel->yawmins[0] = loadmodel->yawmins[1] = -(loadmodel->yawmaxs[0] = loadmodel->yawmaxs[1] = modelyawradius);
 756         loadmodel->yawmins[2] = loadmodel->normalmins[2];
 757         loadmodel->yawmaxs[2] = loadmodel->normalmaxs[2];
 758 }
 759
 760 static void zymswapintblock(int *m, int size)
 761 {
 762         size /= 4;
 763         while(size--)
 764         {
 765                 *m = BigLong(*m);
 766                 m++;
 767         }
 768 }
 769
 770 void Mod_LoadZymoticModel(model_t *mod, void *buffer)
 771 {
 772         int i, pbase, *bonecount, numposes;
 773         unsigned int count, a, b, c, *renderlist, *renderlistend;
 774         rtexture_t **texture;
 775         char *shadername;
 776         zymtype1header_t *pinmodel, *pheader;
 777         zymscene_t *scene;
 778         zymbone_t *bone;
 779         float corner[2], modelradius;
 780
 781         pinmodel = (void *)buffer;
 782
 783         if (memcmp(pinmodel->id, "ZYMOTICMODEL", 12))
 784                 Host_Error ("Mod_LoadZymoticModel: %s is not a zymotic model\n");
 785
 786         if (BigLong(pinmodel->type) != 1)
 787                 Host_Error ("Mod_LoadZymoticModel: only type 1 (skeletal pose) models are currently supported (name = %s)\n", loadmodel->name);
 788
 789         loadmodel->type = mod_alias;
 790         loadmodel->aliastype = ALIASTYPE_ZYM;
 791
 792         loadmodel->zymdata_header = pheader = Mem_Alloc(loadmodel->mempool, BigLong(pinmodel->filesize));
 793
 794         pbase = (int) pheader;
 795
 796         memcpy(pheader, pinmodel, BigLong(pinmodel->filesize));
 797
 798         // byteswap header
 799 #define SWAPLONG(var) var = BigLong(var)
 800 #define SWAPFLOAT(var) var = BigFloat(var)
 801 #define SWAPVEC(var) SWAPFLOAT(var[0]);SWAPFLOAT(var[1]);SWAPFLOAT(var[2])
 802         SWAPLONG(pheader->type);
 803         SWAPLONG(pheader->filesize);
 804         SWAPVEC(pheader->mins);
 805         SWAPVEC(pheader->maxs);
 806         SWAPFLOAT(pheader->radius);
 807         SWAPLONG(pheader->numverts);
 808         SWAPLONG(pheader->numtris);
 809         SWAPLONG(pheader->numshaders);
 810         SWAPLONG(pheader->numbones);
 811         SWAPLONG(pheader->numscenes);
 812
 813 #define SWAPLUMPINFO(var) SWAPLONG(pheader->lump_##var.start);SWAPLONG(pheader->lump_##var.length)
 814         SWAPLUMPINFO(scenes);
 815         SWAPLUMPINFO(poses);
 816         SWAPLUMPINFO(bones);
 817         SWAPLUMPINFO(vertbonecounts);
 818         SWAPLUMPINFO(verts);
 819         SWAPLUMPINFO(texcoords);
 820         SWAPLUMPINFO(render);
 821         SWAPLUMPINFO(shaders);
 822         SWAPLUMPINFO(trizone);
 823
 824         loadmodel->flags = 0; // there are no flags
 825         loadmodel->numframes = pheader->numscenes;
 826         loadmodel->synctype = ST_SYNC;
 827         loadmodel->numtris = pheader->numtris;
 828
 829         // FIXME: add skin support and texturing and shaders and...
 830         loadmodel->skinscenes = Mem_Alloc(loadmodel->mempool, sizeof(animscene_t) + sizeof(skinframe_t));
 831         loadmodel->skinscenes[0].firstframe = 0;
 832         loadmodel->skinscenes[0].framecount = 1;
 833         loadmodel->skinscenes[0].loop = true;
 834         loadmodel->skinscenes[0].framerate = 10;
 835         loadmodel->skinframes = (void *)(loadmodel->skinscenes + 1);
 836         loadmodel->skinframes->base = NULL;
 837         loadmodel->skinframes->fog = NULL;
 838         loadmodel->skinframes->pants = NULL;
 839         loadmodel->skinframes->shirt = NULL;
 840         loadmodel->skinframes->glow = NULL;
 841         loadmodel->skinframes->merged = NULL;
 842         loadmodel->numskins = 1;
 843         numposes = pheader->lump_poses.length / sizeof(float[3][4]) / pheader->numbones;
 844
 845         // go through the lumps, swapping things
 846
 847 //      zymlump_t lump_scenes; // zymscene_t scene[numscenes]; // name and other information for each scene (see zymscene struct)
 848         scene = (void *) (pheader->lump_scenes.start + pbase);
 849         loadmodel->animscenes = Mem_Alloc(loadmodel->mempool, sizeof(animscene_t) * loadmodel->numframes);
 850         for (i = 0;i < pheader->numscenes;i++)
 851         {
 852                 SWAPVEC(scene->mins);
 853                 SWAPVEC(scene->maxs);
 854                 SWAPFLOAT(scene->radius);
 855                 SWAPFLOAT(scene->framerate);
 856                 SWAPLONG(scene->flags);
 857                 SWAPLONG(scene->start);
 858                 SWAPLONG(scene->length);
 859
 860                 memcpy(loadmodel->animscenes[i].name, scene->name, 32);
 861                 loadmodel->animscenes[i].firstframe = scene->start;
 862                 loadmodel->animscenes[i].framecount = scene->length;
 863                 loadmodel->animscenes[i].framerate = scene->framerate;
 864                 loadmodel->animscenes[i].loop = (scene->flags & ZYMSCENEFLAG_NOLOOP) == 0;
 865
 866                 if ((unsigned int) loadmodel->animscenes[i].firstframe >= numposes)
 867                         Host_Error("Mod_LoadZymoticModel: scene firstframe (%i) >= numposes (%i)\n", loadmodel->animscenes[i].firstframe, numposes);
 868                 if ((unsigned int) loadmodel->animscenes[i].firstframe + (unsigned int) loadmodel->animscenes[i].framecount > numposes)
 869                         Host_Error("Mod_LoadZymoticModel: scene firstframe (%i) + framecount (%i) >= numposes (%i)\n", loadmodel->animscenes[i].firstframe, loadmodel->animscenes[i].framecount, numposes);
 870                 if (loadmodel->animscenes[i].framerate < 0)
 871                         Host_Error("Mod_LoadZymoticModel: scene framerate (%f) < 0\n", loadmodel->animscenes[i].framerate);
 872                 scene++;
 873         }
 874
 875 //      zymlump_t lump_poses; // float pose[numposes][numbones][3][4]; // animation data
 876         zymswapintblock((void *) (pheader->lump_poses.start + pbase), pheader->lump_poses.length);
 877
 878 //      zymlump_t lump_bones; // zymbone_t bone[numbones];
 879         bone = (void *) (pheader->lump_bones.start + pbase);
 880         for (i = 0;i < pheader->numbones;i++)
 881         {
 882                 SWAPLONG(bone[i].flags);
 883                 SWAPLONG(bone[i].parent);
 884                 if (bone[i].parent >= i)
 885                         Host_Error("Mod_LoadZymoticModel: bone[i].parent >= i in %s\n", loadmodel->name);
 886         }
 887
 888 //      zymlump_t lump_vertbonecounts; // int vertbonecounts[numvertices]; // how many bones influence each vertex (separate mainly to make this compress better)
 889         zymswapintblock((void *) (pheader->lump_vertbonecounts.start + pbase), pheader->lump_vertbonecounts.length);
 890         bonecount = (void *) (pheader->lump_vertbonecounts.start + pbase);
 891         for (i = 0;i < pheader->numbones;i++)
 892                 if (bonecount[i] < 1)
 893                         Host_Error("Mod_LoadZymoticModel: bone vertex count < 1 in %s\n", loadmodel->name);
 894
 895 //      zymlump_t lump_verts; // zymvertex_t vert[numvertices]; // see vertex struct
 896         zymswapintblock((void *) (pheader->lump_verts.start + pbase), pheader->lump_verts.length);
 897
 898 //      zymlump_t lump_texcoords; // float texcoords[numvertices][2];
 899         zymswapintblock((void *) (pheader->lump_texcoords.start + pbase), pheader->lump_texcoords.length);
 900
 901 //      zymlump_t lump_render; // int renderlist[rendersize]; // sorted by shader with run lengths (int count), shaders are sequentially used, each run can be used with glDrawElements (each triangle is 3 int indices)
 902         zymswapintblock((void *) (pheader->lump_render.start + pbase), pheader->lump_render.length);
 903         // validate renderlist and swap winding order of tris
 904         renderlist = (void *) (pheader->lump_render.start + pbase);
 905         renderlistend = (void *) ((qbyte *) renderlist + pheader->lump_render.length);
 906         i = pheader->numshaders * sizeof(int) + pheader->numtris * sizeof(int[3]);
 907         if (pheader->lump_render.length != i)
 908                 Host_Error("Mod_LoadZymoticModel: renderlist is wrong size in %s (is %i bytes, should be %i bytes)\n", loadmodel->name, pheader->lump_render.length, i);
 909         for (i = 0;i < pheader->numshaders;i++)
 910         {
 911                 if (renderlist >= renderlistend)
 912                         Host_Error("Mod_LoadZymoticModel: corrupt renderlist in %s (wrong size)\n", loadmodel->name);
 913                 count = *renderlist++;
 914                 if (renderlist + count * 3 > renderlistend)
 915                         Host_Error("Mod_LoadZymoticModel: corrupt renderlist in %s (wrong size)\n", loadmodel->name);
 916                 while (count--)
 917                 {
 918                         a = renderlist[0];
 919                         b = renderlist[1];
 920                         c = renderlist[2];
 921                         if (a >= pheader->numverts || b >= pheader->numverts || c >= pheader->numverts)
 922                                 Host_Error("Mod_LoadZymoticModel: corrupt renderlist in %s (out of bounds index)\n", loadmodel->name);
 923                         renderlist[0] = c;
 924                         renderlist[1] = b;
 925                         renderlist[2] = a;
 926                         renderlist += 3;
 927                 }
 928         }
 929
 930 //      zymlump_t lump_shaders; // char shadername[numshaders][32]; // shaders used on this model
 931         shadername = (void *) (pheader->lump_shaders.start + pbase);
 932         texture = (void *) shadername;
 933         for (i = 0;i < pheader->numshaders;i++)
 934         {
 935                 rtexture_t *rt;
 936                 rt = loadtextureimage(loadmodel->texturepool, shadername, 0, 0, true, r_mipskins.integer, true);
 937                 shadername += 32;
 938                 *texture++ = rt; // reuse shader name list for texture pointers
 939         }
 940
 941 //      zymlump_t lump_trizone; // byte trizone[numtris]; // see trizone explanation
 942         zymswapintblock((void *) (pheader->lump_trizone.start + pbase), pheader->lump_trizone.length);
 943
 944         // model bbox
 945         modelradius = pheader->radius;
 946         for (i = 0;i < 3;i++)
 947         {
 948                 loadmodel->normalmins[i] = pheader->mins[i];
 949                 loadmodel->normalmaxs[i] = pheader->maxs[i];
 950                 loadmodel->rotatedmins[i] = -modelradius;
 951                 loadmodel->rotatedmaxs[i] = modelradius;
 952         }
 953         corner[0] = max(fabs(loadmodel->normalmins[0]), fabs(loadmodel->normalmaxs[0]));
 954         corner[1] = max(fabs(loadmodel->normalmins[1]), fabs(loadmodel->normalmaxs[1]));
 955         loadmodel->yawmaxs[0] = loadmodel->yawmaxs[1] = sqrt(corner[0]*corner[0]+corner[1]*corner[1]);
 956         if (loadmodel->yawmaxs[0] > modelradius)
 957                 loadmodel->yawmaxs[0] = loadmodel->yawmaxs[1] = modelradius;
 958         loadmodel->yawmins[0] = loadmodel->yawmins[1] = -loadmodel->yawmaxs[0];
 959         loadmodel->yawmins[2] = loadmodel->normalmins[2];
 960         loadmodel->yawmaxs[2] = loadmodel->normalmaxs[2];
 961
 962         loadmodel->SERAddEntity = Mod_Alias_SERAddEntity;
 963         loadmodel->Draw = R_DrawAliasModel;
 964         loadmodel->DrawSky = NULL;
 965         loadmodel->DrawShadow = NULL;
 966 }
 967