cl_collision.c

   1
   2 #include "quakedef.h"
   3 #include "cl_collision.h"
   4
   5 float CL_SelectTraceLine(const vec3_t start, const vec3_t end, vec3_t impact, vec3_t normal, int *hitent, entity_render_t *ignoreent)
   6 {
   7         float maxfrac;
   8         int n;
   9         entity_render_t *ent;
  10         vec_t tracemins[3], tracemaxs[3];
  11         trace_t trace;
  12         vec_t tempnormal[3], starttransformed[3], endtransformed[3];
  13
  14         memset (&trace, 0 , sizeof(trace_t));
  15         trace.fraction = 1;
  16         VectorCopy (end, trace.endpos);
  17
  18         if (hitent)
  19                 *hitent = 0;
  20         if (cl.worldmodel && cl.worldmodel->TraceLine)
  21                 cl.worldmodel->TraceLine(cl.worldmodel, NULL, NULL, &trace, start, end, SUPERCONTENTS_SOLID, 0, 0);
  22
  23         if (normal)
  24                 VectorCopy(trace.plane.normal, normal);
  25         maxfrac = trace.fraction;
  26
  27         tracemins[0] = min(start[0], end[0]);
  28         tracemaxs[0] = max(start[0], end[0]);
  29         tracemins[1] = min(start[1], end[1]);
  30         tracemaxs[1] = max(start[1], end[1]);
  31         tracemins[2] = min(start[2], end[2]);
  32         tracemaxs[2] = max(start[2], end[2]);
  33
  34         // look for embedded bmodels
  35         for (n = 0;n < cl.num_entities;n++)
  36         {
  37                 if (!cl.entities_active[n])
  38                         continue;
  39                 ent = &cl.entities[n].render;
  40                 if (!BoxesOverlap(ent->mins, ent->maxs, tracemins, tracemaxs))
  41                         continue;
  42                 if (!ent->model || !ent->model->TraceLine)
  43                         continue;
  44                 if ((ent->flags & RENDER_EXTERIORMODEL) && !chase_active.integer)
  45                         continue;
  46                 // if transparent and not selectable, skip entity
  47                 if (!(cl.entities[n].state_current.effects & EF_SELECTABLE) && (ent->alpha < 1 || (ent->effects & (EF_ADDITIVE | EF_NODEPTHTEST))))
  48                         continue;
  49                 if (ent == ignoreent)
  50                         continue;
  51                 Matrix4x4_Transform(&ent->inversematrix, start, starttransformed);
  52                 Matrix4x4_Transform(&ent->inversematrix, end, endtransformed);
  53                 Collision_ClipTrace_Box(&trace, ent->model->normalmins, ent->model->normalmaxs, starttransformed, vec3_origin, vec3_origin, endtransformed, SUPERCONTENTS_SOLID, 0, 0, SUPERCONTENTS_SOLID, 0, NULL);
  54                 if (maxfrac < trace.fraction)
  55                         continue;
  56
  57                 ent->model->TraceLine(ent->model, ent->frameblend, ent->skeleton, &trace, starttransformed, endtransformed, SUPERCONTENTS_SOLID, 0, 0);
  58
  59                 if (maxfrac > trace.fraction)
  60                 {
  61                         if (hitent)
  62                                 *hitent = n;
  63                         maxfrac = trace.fraction;
  64                         if (normal)
  65                         {
  66                                 VectorCopy(trace.plane.normal, tempnormal);
  67                                 Matrix4x4_Transform3x3(&ent->matrix, tempnormal, normal);
  68                         }
  69                 }
  70         }
  71         maxfrac = bound(0, maxfrac, 1);
  72         //maxrealfrac = bound(0, maxrealfrac, 1);
  73         //if (maxfrac < 0 || maxfrac > 1) Con_Printf("fraction out of bounds %f %s:%d\n", maxfrac, __FILE__, __LINE__);
  74         if (impact)
  75                 VectorLerp(start, maxfrac, end, impact);
  76         return maxfrac;
  77 }
  78
  79 void CL_FindNonSolidLocation(const vec3_t in, vec3_t out, vec_t radius)
  80 {
  81         // FIXME: check multiple brush models
  82         if (cl.worldmodel && cl.worldmodel->brush.FindNonSolidLocation)
  83                 cl.worldmodel->brush.FindNonSolidLocation(cl.worldmodel, in, out, radius);
  84 }
  85
  86 dp_model_t *CL_GetModelByIndex(int modelindex)
  87 {
  88         if(!modelindex)
  89                 return NULL;
  90         if (modelindex < 0)
  91         {
  92                 modelindex = -(modelindex+1);
  93                 if (modelindex < MAX_MODELS)
  94                         return cl.csqc_model_precache[modelindex];
  95         }
  96         else
  97         {
  98                 if(modelindex < MAX_MODELS)
  99                         return cl.model_precache[modelindex];
 100         }
 101         return NULL;
 102 }
 103
 104 dp_model_t *CL_GetModelFromEdict(prvm_edict_t *ed)
 105 {
 106         prvm_prog_t *prog = CLVM_prog;
 107         if (!ed || ed->priv.server->free)
 108                 return NULL;
 109         return CL_GetModelByIndex((int)PRVM_clientedictfloat(ed, modelindex));
 110 }
 111
 112 void CL_LinkEdict(prvm_edict_t *ent)
 113 {
 114         prvm_prog_t *prog = CLVM_prog;
 115         vec3_t mins, maxs;
 116
 117         if (ent == prog->edicts)
 118                 return;         // don't add the world
 119
 120         if (ent->priv.server->free)
 121                 return;
 122
 123         // set the abs box
 124
 125         if (PRVM_clientedictfloat(ent, solid) == SOLID_BSP)
 126         {
 127                 dp_model_t *model = CL_GetModelByIndex( (int)PRVM_clientedictfloat(ent, modelindex) );
 128                 if (model == NULL)
 129                 {
 130                         Con_Printf("edict %i: SOLID_BSP with invalid modelindex!\n", PRVM_NUM_FOR_EDICT(ent));
 131
 132                         model = CL_GetModelByIndex( 0 );
 133                 }
 134
 135                 if( model != NULL )
 136                 {
 137                         if (!model->TraceBox)
 138                                 Con_DPrintf("edict %i: SOLID_BSP with non-collidable model\n", PRVM_NUM_FOR_EDICT(ent));
 139
 140                         if (PRVM_clientedictvector(ent, angles)[0] || PRVM_clientedictvector(ent, angles)[2] || PRVM_clientedictvector(ent, avelocity)[0] || PRVM_clientedictvector(ent, avelocity)[2])
 141                         {
 142                                 VectorAdd(PRVM_clientedictvector(ent, origin), model->rotatedmins, mins);
 143                                 VectorAdd(PRVM_clientedictvector(ent, origin), model->rotatedmaxs, maxs);
 144                         }
 145                         else if (PRVM_clientedictvector(ent, angles)[1] || PRVM_clientedictvector(ent, avelocity)[1])
 146                         {
 147                                 VectorAdd(PRVM_clientedictvector(ent, origin), model->yawmins, mins);
 148                                 VectorAdd(PRVM_clientedictvector(ent, origin), model->yawmaxs, maxs);
 149                         }
 150                         else
 151                         {
 152                                 VectorAdd(PRVM_clientedictvector(ent, origin), model->normalmins, mins);
 153                                 VectorAdd(PRVM_clientedictvector(ent, origin), model->normalmaxs, maxs);
 154                         }
 155                 }
 156                 else
 157                 {
 158                         // SOLID_BSP with no model is valid, mainly because some QC setup code does so temporarily
 159                         VectorAdd(PRVM_clientedictvector(ent, origin), PRVM_clientedictvector(ent, mins), mins);
 160                         VectorAdd(PRVM_clientedictvector(ent, origin), PRVM_clientedictvector(ent, maxs), maxs);
 161                 }
 162         }
 163         else
 164         {
 165                 VectorAdd(PRVM_clientedictvector(ent, origin), PRVM_clientedictvector(ent, mins), mins);
 166                 VectorAdd(PRVM_clientedictvector(ent, origin), PRVM_clientedictvector(ent, maxs), maxs);
 167         }
 168
 169         VectorCopy(mins, PRVM_clientedictvector(ent, absmin));
 170         VectorCopy(maxs, PRVM_clientedictvector(ent, absmax));
 171
 172         World_LinkEdict(&cl.world, ent, mins, maxs);
 173 }
 174
 175 int CL_GenericHitSuperContentsMask(const prvm_edict_t *passedict)
 176 {
 177         prvm_prog_t *prog = CLVM_prog;
 178         if (passedict)
 179         {
 180                 int dphitcontentsmask = (int)PRVM_clientedictfloat(passedict, dphitcontentsmask);
 181                 if (dphitcontentsmask)
 182                         return dphitcontentsmask;
 183                 else if (PRVM_clientedictfloat(passedict, solid) == SOLID_SLIDEBOX)
 184                 {
 185                         if ((int)PRVM_clientedictfloat(passedict, flags) & FL_MONSTER)
 186                                 return SUPERCONTENTS_SOLID | SUPERCONTENTS_BODY | SUPERCONTENTS_MONSTERCLIP;
 187                         else
 188                                 return SUPERCONTENTS_SOLID | SUPERCONTENTS_BODY | SUPERCONTENTS_PLAYERCLIP;
 189                 }
 190                 else if (PRVM_clientedictfloat(passedict, solid) == SOLID_CORPSE)
 191                         return SUPERCONTENTS_SOLID | SUPERCONTENTS_BODY;
 192                 else if (PRVM_clientedictfloat(passedict, solid) == SOLID_TRIGGER)
 193                         return SUPERCONTENTS_SOLID | SUPERCONTENTS_BODY;
 194                 else
 195                         return SUPERCONTENTS_SOLID | SUPERCONTENTS_BODY | SUPERCONTENTS_CORPSE;
 196         }
 197         else
 198                 return SUPERCONTENTS_SOLID | SUPERCONTENTS_BODY | SUPERCONTENTS_CORPSE;
 199 }
 200
 201 /*
 202 ==================
 203 CL_Move
 204 ==================
 205 */
 206 trace_t CL_TracePoint(const vec3_t start, int type, prvm_edict_t *passedict, int hitsupercontentsmask, int skipsupercontentsmask, int skipmaterialflagsmask, qboolean hitnetworkbrushmodels, qboolean hitnetworkplayers, int *hitnetworkentity, qboolean hitcsqcentities)
 207 {
 208         prvm_prog_t *prog = CLVM_prog;
 209         int i, bodysupercontents;
 210         int passedictprog;
 211         prvm_edict_t *traceowner, *touch;
 212         trace_t trace;
 213         // temporary storage because prvm_vec_t may need conversion
 214         vec3_t touchmins, touchmaxs;
 215         // bounding box of entire move area
 216         vec3_t clipboxmins, clipboxmaxs;
 217         // size when clipping against monsters
 218         vec3_t clipmins2, clipmaxs2;
 219         // start and end origin of move
 220         vec3_t clipstart;
 221         // trace results
 222         trace_t cliptrace;
 223         // matrices to transform into/out of other entity's space
 224         matrix4x4_t matrix, imatrix;
 225         // model of other entity
 226         dp_model_t *model;
 227         // list of entities to test for collisions
 228         int numtouchedicts;
 229         static prvm_edict_t *touchedicts[MAX_EDICTS];
 230
 231         if (hitnetworkentity)
 232                 *hitnetworkentity = 0;
 233
 234         VectorCopy(start, clipstart);
 235         VectorClear(clipmins2);
 236         VectorClear(clipmaxs2);
 237 #if COLLISIONPARANOID >= 3
 238         Con_Printf("move(%f %f %f)", clipstart[0], clipstart[1], clipstart[2]);
 239 #endif
 240
 241         // clip to world
 242         Collision_ClipPointToWorld(&cliptrace, cl.worldmodel, clipstart, hitsupercontentsmask, skipsupercontentsmask, skipmaterialflagsmask);
 243         cliptrace.worldstartsolid = cliptrace.bmodelstartsolid = cliptrace.startsolid;
 244         if (cliptrace.startsolid || cliptrace.fraction < 1)
 245                 cliptrace.ent = prog ? prog->edicts : NULL;
 246         if (type == MOVE_WORLDONLY)
 247                 goto finished;
 248
 249         if (type == MOVE_MISSILE)
 250         {
 251                 // LordHavoc: modified this, was = -15, now -= 15
 252                 for (i = 0;i < 3;i++)
 253                 {
 254                         clipmins2[i] -= 15;
 255                         clipmaxs2[i] += 15;
 256                 }
 257         }
 258
 259         // create the bounding box of the entire move
 260         for (i = 0;i < 3;i++)
 261         {
 262                 clipboxmins[i] = clipstart[i] - 1;
 263                 clipboxmaxs[i] = clipstart[i] + 1;
 264         }
 265
 266         // debug override to test against everything
 267         if (sv_debugmove.integer)
 268         {
 269                 clipboxmins[0] = clipboxmins[1] = clipboxmins[2] = -999999999;
 270                 clipboxmaxs[0] = clipboxmaxs[1] = clipboxmaxs[2] =  999999999;
 271         }
 272
 273         // if the passedict is world, make it NULL (to avoid two checks each time)
 274         // this checks prog because this function is often called without a CSQC
 275         // VM context
 276         if (prog == NULL || passedict == prog->edicts)
 277                 passedict = NULL;
 278         // precalculate prog value for passedict for comparisons
 279         passedictprog = prog != NULL ? PRVM_EDICT_TO_PROG(passedict) : 0;
 280         // precalculate passedict's owner edict pointer for comparisons
 281         traceowner = passedict ? PRVM_PROG_TO_EDICT(PRVM_clientedictedict(passedict, owner)) : NULL;
 282
 283         // collide against network entities
 284         if (hitnetworkbrushmodels)
 285         {
 286                 for (i = 0;i < cl.num_brushmodel_entities;i++)
 287                 {
 288                         entity_render_t *ent = &cl.entities[cl.brushmodel_entities[i]].render;
 289                         if (!BoxesOverlap(clipboxmins, clipboxmaxs, ent->mins, ent->maxs))
 290                                 continue;
 291                         Collision_ClipPointToGenericEntity(&trace, ent->model, ent->frameblend, ent->skeleton, vec3_origin, vec3_origin, 0, &ent->matrix, &ent->inversematrix, start, hitsupercontentsmask, skipsupercontentsmask, skipmaterialflagsmask);
 292                         if (cliptrace.fraction > trace.fraction && hitnetworkentity)
 293                                 *hitnetworkentity = cl.brushmodel_entities[i];
 294                         Collision_CombineTraces(&cliptrace, &trace, NULL, true);
 295                 }
 296         }
 297
 298         // collide against player entities
 299         if (hitnetworkplayers)
 300         {
 301                 vec3_t origin, entmins, entmaxs;
 302                 matrix4x4_t entmatrix, entinversematrix;
 303
 304                 if(IS_OLDNEXUIZ_DERIVED(gamemode))
 305                 {
 306                         // don't hit network players, if we are a nonsolid player
 307                         if(cl.scores[cl.playerentity-1].frags == -666 || cl.scores[cl.playerentity-1].frags == -616)
 308                                 goto skipnetworkplayers;
 309                 }
 310
 311                 for (i = 1;i <= cl.maxclients;i++)
 312                 {
 313                         entity_render_t *ent = &cl.entities[i].render;
 314
 315                         // don't hit ourselves
 316                         if (i == cl.playerentity)
 317                                 continue;
 318
 319                         // don't hit players that don't exist
 320                         if (!cl.entities_active[i])
 321                                 continue;
 322                         if (!cl.scores[i-1].name[0])
 323                                 continue;
 324
 325                         if(IS_OLDNEXUIZ_DERIVED(gamemode))
 326                         {
 327                                 // don't hit spectators or nonsolid players
 328                                 if(cl.scores[i-1].frags == -666 || cl.scores[i-1].frags == -616)
 329                                         continue;
 330                         }
 331
 332                         Matrix4x4_OriginFromMatrix(&ent->matrix, origin);
 333                         VectorAdd(origin, cl.playerstandmins, entmins);
 334                         VectorAdd(origin, cl.playerstandmaxs, entmaxs);
 335                         if (!BoxesOverlap(clipboxmins, clipboxmaxs, entmins, entmaxs))
 336                                 continue;
 337                         Matrix4x4_CreateTranslate(&entmatrix, origin[0], origin[1], origin[2]);
 338                         Matrix4x4_CreateTranslate(&entinversematrix, -origin[0], -origin[1], -origin[2]);
 339                         Collision_ClipPointToGenericEntity(&trace, NULL, NULL, NULL, cl.playerstandmins, cl.playerstandmaxs, SUPERCONTENTS_BODY, &entmatrix, &entinversematrix, start, hitsupercontentsmask, skipsupercontentsmask, skipmaterialflagsmask);
 340                         if (cliptrace.fraction > trace.fraction && hitnetworkentity)
 341                                 *hitnetworkentity = i;
 342                         Collision_CombineTraces(&cliptrace, &trace, NULL, false);
 343                 }
 344
 345 skipnetworkplayers:
 346                 ;
 347         }
 348
 349         // clip to entities
 350         // because this uses World_EntitiestoBox, we know all entity boxes overlap
 351         // the clip region, so we can skip culling checks in the loop below
 352         // note: if prog is NULL then there won't be any linked entities
 353         numtouchedicts = 0;
 354         if (hitcsqcentities && prog != NULL)
 355         {
 356                 numtouchedicts = World_EntitiesInBox(&cl.world, clipboxmins, clipboxmaxs, MAX_EDICTS, touchedicts);
 357                 if (numtouchedicts > MAX_EDICTS)
 358                 {
 359                         // this never happens
 360                         Con_Printf("CL_EntitiesInBox returned %i edicts, max was %i\n", numtouchedicts, MAX_EDICTS);
 361                         numtouchedicts = MAX_EDICTS;
 362                 }
 363         }
 364         for (i = 0;i < numtouchedicts;i++)
 365         {
 366                 touch = touchedicts[i];
 367
 368                 if (PRVM_clientedictfloat(touch, solid) < SOLID_BBOX)
 369                         continue;
 370                 if (type == MOVE_NOMONSTERS && PRVM_clientedictfloat(touch, solid) != SOLID_BSP)
 371                         continue;
 372
 373                 if (passedict)
 374                 {
 375                         // don't clip against self
 376                         if (passedict == touch)
 377                                 continue;
 378                         // don't clip owned entities against owner
 379                         if (traceowner == touch)
 380                                 continue;
 381                         // don't clip owner against owned entities
 382                         if (passedictprog == PRVM_clientedictedict(touch, owner))
 383                                 continue;
 384                         // don't clip points against points (they can't collide)
 385                         if (VectorCompare(PRVM_clientedictvector(touch, mins), PRVM_clientedictvector(touch, maxs)) && (type != MOVE_MISSILE || !((int)PRVM_clientedictfloat(touch, flags) & FL_MONSTER)))
 386                                 continue;
 387                 }
 388
 389                 bodysupercontents = PRVM_clientedictfloat(touch, solid) == SOLID_CORPSE ? SUPERCONTENTS_CORPSE : SUPERCONTENTS_BODY;
 390
 391                 // might interact, so do an exact clip
 392                 model = NULL;
 393                 if ((int) PRVM_clientedictfloat(touch, solid) == SOLID_BSP || type == MOVE_HITMODEL)
 394                         model = CL_GetModelFromEdict(touch);
 395                 if (model)
 396                         Matrix4x4_CreateFromQuakeEntity(&matrix, PRVM_clientedictvector(touch, origin)[0], PRVM_clientedictvector(touch, origin)[1], PRVM_clientedictvector(touch, origin)[2], PRVM_clientedictvector(touch, angles)[0], PRVM_clientedictvector(touch, angles)[1], PRVM_clientedictvector(touch, angles)[2], 1);
 397                 else
 398                         Matrix4x4_CreateTranslate(&matrix, PRVM_clientedictvector(touch, origin)[0], PRVM_clientedictvector(touch, origin)[1], PRVM_clientedictvector(touch, origin)[2]);
 399                 Matrix4x4_Invert_Simple(&imatrix, &matrix);
 400                 VectorCopy(PRVM_clientedictvector(touch, mins), touchmins);
 401                 VectorCopy(PRVM_clientedictvector(touch, maxs), touchmaxs);
 402                 if ((int)PRVM_clientedictfloat(touch, flags) & FL_MONSTER)
 403                         Collision_ClipToGenericEntity(&trace, model, touch->priv.server->frameblend, &touch->priv.server->skeleton, touchmins, touchmaxs, bodysupercontents, &matrix, &imatrix, clipstart, clipmins2, clipmaxs2, clipstart, hitsupercontentsmask, skipsupercontentsmask, skipmaterialflagsmask, 0.0f);
 404                 else
 405                         Collision_ClipPointToGenericEntity(&trace, model, touch->priv.server->frameblend, &touch->priv.server->skeleton, touchmins, touchmaxs, bodysupercontents, &matrix, &imatrix, clipstart, hitsupercontentsmask, skipsupercontentsmask, skipmaterialflagsmask);
 406
 407                 if (cliptrace.fraction > trace.fraction && hitnetworkentity)
 408                         *hitnetworkentity = 0;
 409                 Collision_CombineTraces(&cliptrace, &trace, (void *)touch, PRVM_clientedictfloat(touch, solid) == SOLID_BSP);
 410         }
 411
 412 finished:
 413         return cliptrace;
 414 }
 415
 416 /*
 417 ==================
 418 CL_TraceLine
 419 ==================
 420 */
 421 trace_t CL_TraceLine(const vec3_t start, const vec3_t end, int type, prvm_edict_t *passedict, int hitsupercontentsmask, int skipsupercontentsmask, int skipmaterialflagsmask, float extend, qboolean hitnetworkbrushmodels, qboolean hitnetworkplayers, int *hitnetworkentity, qboolean hitcsqcentities, qboolean hitsurfaces)
 422 {
 423         prvm_prog_t *prog = CLVM_prog;
 424         int i, bodysupercontents;
 425         int passedictprog;
 426         prvm_edict_t *traceowner, *touch;
 427         trace_t trace;
 428         // temporary storage because prvm_vec_t may need conversion
 429         vec3_t touchmins, touchmaxs;
 430         // bounding box of entire move area
 431         vec3_t clipboxmins, clipboxmaxs;
 432         // size when clipping against monsters
 433         vec3_t clipmins2, clipmaxs2;
 434         // start and end origin of move
 435         vec3_t clipstart, clipend;
 436         // trace results
 437         trace_t cliptrace;
 438         // matrices to transform into/out of other entity's space
 439         matrix4x4_t matrix, imatrix;
 440         // model of other entity
 441         dp_model_t *model;
 442         // list of entities to test for collisions
 443         int numtouchedicts;
 444         static prvm_edict_t *touchedicts[MAX_EDICTS];
 445         if (VectorCompare(start, end))
 446                 return CL_TracePoint(start, type, passedict, hitsupercontentsmask, skipsupercontentsmask, skipmaterialflagsmask, hitnetworkbrushmodels, hitnetworkplayers, hitnetworkentity, hitcsqcentities);
 447
 448         if (hitnetworkentity)
 449                 *hitnetworkentity = 0;
 450
 451         VectorCopy(start, clipstart);
 452         VectorCopy(end, clipend);
 453         VectorClear(clipmins2);
 454         VectorClear(clipmaxs2);
 455 #if COLLISIONPARANOID >= 3
 456         Con_Printf("move(%f %f %f,%f %f %f)", clipstart[0], clipstart[1], clipstart[2], clipend[0], clipend[1], clipend[2]);
 457 #endif
 458
 459         // clip to world
 460         Collision_ClipLineToWorld(&cliptrace, cl.worldmodel, clipstart, clipend, hitsupercontentsmask, skipsupercontentsmask, skipmaterialflagsmask, extend, hitsurfaces);
 461         cliptrace.worldstartsolid = cliptrace.bmodelstartsolid = cliptrace.startsolid;
 462         if (cliptrace.startsolid || cliptrace.fraction < 1)
 463                 cliptrace.ent = prog ? prog->edicts : NULL;
 464         if (type == MOVE_WORLDONLY)
 465                 goto finished;
 466
 467         if (type == MOVE_MISSILE)
 468         {
 469                 // LordHavoc: modified this, was = -15, now -= 15
 470                 for (i = 0;i < 3;i++)
 471                 {
 472                         clipmins2[i] -= 15;
 473                         clipmaxs2[i] += 15;
 474                 }
 475         }
 476
 477         // create the bounding box of the entire move
 478         for (i = 0;i < 3;i++)
 479         {
 480                 clipboxmins[i] = min(clipstart[i], cliptrace.endpos[i]) + clipmins2[i] - 1;
 481                 clipboxmaxs[i] = max(clipstart[i], cliptrace.endpos[i]) + clipmaxs2[i] + 1;
 482         }
 483
 484         // debug override to test against everything
 485         if (sv_debugmove.integer)
 486         {
 487                 clipboxmins[0] = clipboxmins[1] = clipboxmins[2] = -999999999;
 488                 clipboxmaxs[0] = clipboxmaxs[1] = clipboxmaxs[2] =  999999999;
 489         }
 490
 491         // if the passedict is world, make it NULL (to avoid two checks each time)
 492         // this checks prog because this function is often called without a CSQC
 493         // VM context
 494         if (prog == NULL || passedict == prog->edicts)
 495                 passedict = NULL;
 496         // precalculate prog value for passedict for comparisons
 497         passedictprog = prog != NULL ? PRVM_EDICT_TO_PROG(passedict) : 0;
 498         // precalculate passedict's owner edict pointer for comparisons
 499         traceowner = passedict ? PRVM_PROG_TO_EDICT(PRVM_clientedictedict(passedict, owner)) : NULL;
 500
 501         // collide against network entities
 502         if (hitnetworkbrushmodels)
 503         {
 504                 for (i = 0;i < cl.num_brushmodel_entities;i++)
 505                 {
 506                         entity_render_t *ent = &cl.entities[cl.brushmodel_entities[i]].render;
 507                         if (!BoxesOverlap(clipboxmins, clipboxmaxs, ent->mins, ent->maxs))
 508                                 continue;
 509                         Collision_ClipLineToGenericEntity(&trace, ent->model, ent->frameblend, ent->skeleton, vec3_origin, vec3_origin, 0, &ent->matrix, &ent->inversematrix, start, end, hitsupercontentsmask, skipsupercontentsmask, skipmaterialflagsmask, extend, hitsurfaces);
 510                         if (cliptrace.fraction > trace.fraction && hitnetworkentity)
 511                                 *hitnetworkentity = cl.brushmodel_entities[i];
 512                         Collision_CombineTraces(&cliptrace, &trace, NULL, true);
 513                 }
 514         }
 515
 516         // collide against player entities
 517         if (hitnetworkplayers)
 518         {
 519                 vec3_t origin, entmins, entmaxs;
 520                 matrix4x4_t entmatrix, entinversematrix;
 521
 522                 if(IS_OLDNEXUIZ_DERIVED(gamemode))
 523                 {
 524                         // don't hit network players, if we are a nonsolid player
 525                         if(cl.scores[cl.playerentity-1].frags == -666 || cl.scores[cl.playerentity-1].frags == -616)
 526                                 goto skipnetworkplayers;
 527                 }
 528
 529                 for (i = 1;i <= cl.maxclients;i++)
 530                 {
 531                         entity_render_t *ent = &cl.entities[i].render;
 532
 533                         // don't hit ourselves
 534                         if (i == cl.playerentity)
 535                                 continue;
 536
 537                         // don't hit players that don't exist
 538                         if (!cl.entities_active[i])
 539                                 continue;
 540                         if (!cl.scores[i-1].name[0])
 541                                 continue;
 542
 543                         if(IS_OLDNEXUIZ_DERIVED(gamemode))
 544                         {
 545                                 // don't hit spectators or nonsolid players
 546                                 if(cl.scores[i-1].frags == -666 || cl.scores[i-1].frags == -616)
 547                                         continue;
 548                         }
 549
 550                         Matrix4x4_OriginFromMatrix(&ent->matrix, origin);
 551                         VectorAdd(origin, cl.playerstandmins, entmins);
 552                         VectorAdd(origin, cl.playerstandmaxs, entmaxs);
 553                         if (!BoxesOverlap(clipboxmins, clipboxmaxs, entmins, entmaxs))
 554                                 continue;
 555                         Matrix4x4_CreateTranslate(&entmatrix, origin[0], origin[1], origin[2]);
 556                         Matrix4x4_CreateTranslate(&entinversematrix, -origin[0], -origin[1], -origin[2]);
 557                         Collision_ClipLineToGenericEntity(&trace, NULL, NULL, NULL, cl.playerstandmins, cl.playerstandmaxs, SUPERCONTENTS_BODY, &entmatrix, &entinversematrix, start, end, hitsupercontentsmask, skipsupercontentsmask, skipmaterialflagsmask, extend, hitsurfaces);
 558                         if (cliptrace.fraction > trace.fraction && hitnetworkentity)
 559                                 *hitnetworkentity = i;
 560                         Collision_CombineTraces(&cliptrace, &trace, NULL, false);
 561                 }
 562
 563 skipnetworkplayers:
 564                 ;
 565         }
 566
 567         // clip to entities
 568         // because this uses World_EntitiestoBox, we know all entity boxes overlap
 569         // the clip region, so we can skip culling checks in the loop below
 570         // note: if prog is NULL then there won't be any linked entities
 571         numtouchedicts = 0;
 572         if (hitcsqcentities && prog != NULL)
 573         {
 574                 numtouchedicts = World_EntitiesInBox(&cl.world, clipboxmins, clipboxmaxs, MAX_EDICTS, touchedicts);
 575                 if (numtouchedicts > MAX_EDICTS)
 576                 {
 577                         // this never happens
 578                         Con_Printf("CL_EntitiesInBox returned %i edicts, max was %i\n", numtouchedicts, MAX_EDICTS);
 579                         numtouchedicts = MAX_EDICTS;
 580                 }
 581         }
 582         for (i = 0;i < numtouchedicts;i++)
 583         {
 584                 touch = touchedicts[i];
 585
 586                 if (PRVM_clientedictfloat(touch, solid) < SOLID_BBOX)
 587                         continue;
 588                 if (type == MOVE_NOMONSTERS && PRVM_clientedictfloat(touch, solid) != SOLID_BSP)
 589                         continue;
 590
 591                 if (passedict)
 592                 {
 593                         // don't clip against self
 594                         if (passedict == touch)
 595                                 continue;
 596                         // don't clip owned entities against owner
 597                         if (traceowner == touch)
 598                                 continue;
 599                         // don't clip owner against owned entities
 600                         if (passedictprog == PRVM_clientedictedict(touch, owner))
 601                                 continue;
 602                         // don't clip points against points (they can't collide)
 603                         if (VectorCompare(PRVM_clientedictvector(touch, mins), PRVM_clientedictvector(touch, maxs)) && (type != MOVE_MISSILE || !((int)PRVM_clientedictfloat(touch, flags) & FL_MONSTER)))
 604                                 continue;
 605                 }
 606
 607                 bodysupercontents = PRVM_clientedictfloat(touch, solid) == SOLID_CORPSE ? SUPERCONTENTS_CORPSE : SUPERCONTENTS_BODY;
 608
 609                 // might interact, so do an exact clip
 610                 model = NULL;
 611                 if ((int) PRVM_clientedictfloat(touch, solid) == SOLID_BSP || type == MOVE_HITMODEL)
 612                         model = CL_GetModelFromEdict(touch);
 613                 if (model)
 614                         Matrix4x4_CreateFromQuakeEntity(&matrix, PRVM_clientedictvector(touch, origin)[0], PRVM_clientedictvector(touch, origin)[1], PRVM_clientedictvector(touch, origin)[2], PRVM_clientedictvector(touch, angles)[0], PRVM_clientedictvector(touch, angles)[1], PRVM_clientedictvector(touch, angles)[2], 1);
 615                 else
 616                         Matrix4x4_CreateTranslate(&matrix, PRVM_clientedictvector(touch, origin)[0], PRVM_clientedictvector(touch, origin)[1], PRVM_clientedictvector(touch, origin)[2]);
 617                 Matrix4x4_Invert_Simple(&imatrix, &matrix);
 618                 VectorCopy(PRVM_clientedictvector(touch, mins), touchmins);
 619                 VectorCopy(PRVM_clientedictvector(touch, maxs), touchmaxs);
 620                 if (type == MOVE_MISSILE && (int)PRVM_clientedictfloat(touch, flags) & FL_MONSTER)
 621                         Collision_ClipToGenericEntity(&trace, model, touch->priv.server->frameblend, &touch->priv.server->skeleton, touchmins, touchmaxs, bodysupercontents, &matrix, &imatrix, clipstart, clipmins2, clipmaxs2, clipend, hitsupercontentsmask, skipsupercontentsmask, skipmaterialflagsmask, extend);
 622                 else
 623                         Collision_ClipLineToGenericEntity(&trace, model, touch->priv.server->frameblend, &touch->priv.server->skeleton, touchmins, touchmaxs, bodysupercontents, &matrix, &imatrix, clipstart, clipend, hitsupercontentsmask, skipsupercontentsmask, skipmaterialflagsmask, extend, hitsurfaces);
 624
 625                 if (cliptrace.fraction > trace.fraction && hitnetworkentity)
 626                         *hitnetworkentity = 0;
 627                 Collision_CombineTraces(&cliptrace, &trace, (void *)touch, PRVM_clientedictfloat(touch, solid) == SOLID_BSP);
 628         }
 629
 630 finished:
 631         return cliptrace;
 632 }
 633
 634 /*
 635 ==================
 636 CL_Move
 637 ==================
 638 */
 639 trace_t CL_TraceBox(const vec3_t start, const vec3_t mins, const vec3_t maxs, const vec3_t end, int type, prvm_edict_t *passedict, int hitsupercontentsmask, int skipsupercontentsmask, int skipmaterialflagsmask, float extend, qboolean hitnetworkbrushmodels, qboolean hitnetworkplayers, int *hitnetworkentity, qboolean hitcsqcentities)
 640 {
 641         prvm_prog_t *prog = CLVM_prog;
 642         vec3_t hullmins, hullmaxs;
 643         int i, bodysupercontents;
 644         int passedictprog;
 645         qboolean pointtrace;
 646         prvm_edict_t *traceowner, *touch;
 647         trace_t trace;
 648         // temporary storage because prvm_vec_t may need conversion
 649         vec3_t touchmins, touchmaxs;
 650         // bounding box of entire move area
 651         vec3_t clipboxmins, clipboxmaxs;
 652         // size of the moving object
 653         vec3_t clipmins, clipmaxs;
 654         // size when clipping against monsters
 655         vec3_t clipmins2, clipmaxs2;
 656         // start and end origin of move
 657         vec3_t clipstart, clipend;
 658         // trace results
 659         trace_t cliptrace;
 660         // matrices to transform into/out of other entity's space
 661         matrix4x4_t matrix, imatrix;
 662         // model of other entity
 663         dp_model_t *model;
 664         // list of entities to test for collisions
 665         int numtouchedicts;
 666         static prvm_edict_t *touchedicts[MAX_EDICTS];
 667         if (VectorCompare(mins, maxs))
 668         {
 669                 vec3_t shiftstart, shiftend;
 670                 VectorAdd(start, mins, shiftstart);
 671                 VectorAdd(end, mins, shiftend);
 672                 if (VectorCompare(start, end))
 673                         trace = CL_TracePoint(shiftstart, type, passedict, hitsupercontentsmask, skipsupercontentsmask, skipmaterialflagsmask, hitnetworkbrushmodels, hitnetworkplayers, hitnetworkentity, hitcsqcentities);
 674                 else
 675                         trace = CL_TraceLine(shiftstart, shiftend, type, passedict, hitsupercontentsmask, skipsupercontentsmask, skipmaterialflagsmask, extend, hitnetworkbrushmodels, hitnetworkplayers, hitnetworkentity, hitcsqcentities, false);
 676                 VectorSubtract(trace.endpos, mins, trace.endpos);
 677                 return trace;
 678         }
 679
 680         if (hitnetworkentity)
 681                 *hitnetworkentity = 0;
 682
 683         VectorCopy(start, clipstart);
 684         VectorCopy(end, clipend);
 685         VectorCopy(mins, clipmins);
 686         VectorCopy(maxs, clipmaxs);
 687         VectorCopy(mins, clipmins2);
 688         VectorCopy(maxs, clipmaxs2);
 689 #if COLLISIONPARANOID >= 3
 690         Con_Printf("move(%f %f %f,%f %f %f)", clipstart[0], clipstart[1], clipstart[2], clipend[0], clipend[1], clipend[2]);
 691 #endif
 692
 693         // clip to world
 694         Collision_ClipToWorld(&cliptrace, cl.worldmodel, clipstart, clipmins, clipmaxs, clipend, hitsupercontentsmask, skipsupercontentsmask, skipmaterialflagsmask, extend);
 695         cliptrace.worldstartsolid = cliptrace.bmodelstartsolid = cliptrace.startsolid;
 696         if (cliptrace.startsolid || cliptrace.fraction < 1)
 697                 cliptrace.ent = prog ? prog->edicts : NULL;
 698         if (type == MOVE_WORLDONLY)
 699                 goto finished;
 700
 701         if (type == MOVE_MISSILE)
 702         {
 703                 // LordHavoc: modified this, was = -15, now -= 15
 704                 for (i = 0;i < 3;i++)
 705                 {
 706                         clipmins2[i] -= 15;
 707                         clipmaxs2[i] += 15;
 708                 }
 709         }
 710
 711         // get adjusted box for bmodel collisions if the world is q1bsp or hlbsp
 712         if (cl.worldmodel && cl.worldmodel->brush.RoundUpToHullSize)
 713                 cl.worldmodel->brush.RoundUpToHullSize(cl.worldmodel, clipmins, clipmaxs, hullmins, hullmaxs);
 714         else
 715         {
 716                 VectorCopy(clipmins, hullmins);
 717                 VectorCopy(clipmaxs, hullmaxs);
 718         }
 719
 720         // create the bounding box of the entire move
 721         for (i = 0;i < 3;i++)
 722         {
 723                 clipboxmins[i] = min(clipstart[i], cliptrace.endpos[i]) + min(hullmins[i], clipmins2[i]) - 1;
 724                 clipboxmaxs[i] = max(clipstart[i], cliptrace.endpos[i]) + max(hullmaxs[i], clipmaxs2[i]) + 1;
 725         }
 726
 727         // debug override to test against everything
 728         if (sv_debugmove.integer)
 729         {
 730                 clipboxmins[0] = clipboxmins[1] = clipboxmins[2] = -999999999;
 731                 clipboxmaxs[0] = clipboxmaxs[1] = clipboxmaxs[2] =  999999999;
 732         }
 733
 734         // if the passedict is world, make it NULL (to avoid two checks each time)
 735         // this checks prog because this function is often called without a CSQC
 736         // VM context
 737         if (prog == NULL || passedict == prog->edicts)
 738                 passedict = NULL;
 739         // precalculate prog value for passedict for comparisons
 740         passedictprog = prog != NULL ? PRVM_EDICT_TO_PROG(passedict) : 0;
 741         // figure out whether this is a point trace for comparisons
 742         pointtrace = VectorCompare(clipmins, clipmaxs);
 743         // precalculate passedict's owner edict pointer for comparisons
 744         traceowner = passedict ? PRVM_PROG_TO_EDICT(PRVM_clientedictedict(passedict, owner)) : NULL;
 745
 746         // collide against network entities
 747         if (hitnetworkbrushmodels)
 748         {
 749                 for (i = 0;i < cl.num_brushmodel_entities;i++)
 750                 {
 751                         entity_render_t *ent = &cl.entities[cl.brushmodel_entities[i]].render;
 752                         if (!BoxesOverlap(clipboxmins, clipboxmaxs, ent->mins, ent->maxs))
 753                                 continue;
 754                         Collision_ClipToGenericEntity(&trace, ent->model, ent->frameblend, ent->skeleton, vec3_origin, vec3_origin, 0, &ent->matrix, &ent->inversematrix, start, mins, maxs, end, hitsupercontentsmask, skipsupercontentsmask, skipmaterialflagsmask, extend);
 755                         if (cliptrace.fraction > trace.fraction && hitnetworkentity)
 756                                 *hitnetworkentity = cl.brushmodel_entities[i];
 757                         Collision_CombineTraces(&cliptrace, &trace, NULL, true);
 758                 }
 759         }
 760
 761         // collide against player entities
 762         if (hitnetworkplayers)
 763         {
 764                 vec3_t origin, entmins, entmaxs;
 765                 matrix4x4_t entmatrix, entinversematrix;
 766
 767                 if(IS_OLDNEXUIZ_DERIVED(gamemode))
 768                 {
 769                         // don't hit network players, if we are a nonsolid player
 770                         if(cl.scores[cl.playerentity-1].frags == -666 || cl.scores[cl.playerentity-1].frags == -616)
 771                                 goto skipnetworkplayers;
 772                 }
 773
 774                 for (i = 1;i <= cl.maxclients;i++)
 775                 {
 776                         entity_render_t *ent = &cl.entities[i].render;
 777
 778                         // don't hit ourselves
 779                         if (i == cl.playerentity)
 780                                 continue;
 781
 782                         // don't hit players that don't exist
 783                         if (!cl.entities_active[i])
 784                                 continue;
 785                         if (!cl.scores[i-1].name[0])
 786                                 continue;
 787
 788                         if(IS_OLDNEXUIZ_DERIVED(gamemode))
 789                         {
 790                                 // don't hit spectators or nonsolid players
 791                                 if(cl.scores[i-1].frags == -666 || cl.scores[i-1].frags == -616)
 792                                         continue;
 793                         }
 794
 795                         Matrix4x4_OriginFromMatrix(&ent->matrix, origin);
 796                         VectorAdd(origin, cl.playerstandmins, entmins);
 797                         VectorAdd(origin, cl.playerstandmaxs, entmaxs);
 798                         if (!BoxesOverlap(clipboxmins, clipboxmaxs, entmins, entmaxs))
 799                                 continue;
 800                         Matrix4x4_CreateTranslate(&entmatrix, origin[0], origin[1], origin[2]);
 801                         Matrix4x4_CreateTranslate(&entinversematrix, -origin[0], -origin[1], -origin[2]);
 802                         Collision_ClipToGenericEntity(&trace, NULL, NULL, NULL, cl.playerstandmins, cl.playerstandmaxs, SUPERCONTENTS_BODY, &entmatrix, &entinversematrix, start, mins, maxs, end, hitsupercontentsmask, skipsupercontentsmask, skipmaterialflagsmask, extend);
 803                         if (cliptrace.fraction > trace.fraction && hitnetworkentity)
 804                                 *hitnetworkentity = i;
 805                         Collision_CombineTraces(&cliptrace, &trace, NULL, false);
 806                 }
 807
 808 skipnetworkplayers:
 809                 ;
 810         }
 811
 812         // clip to entities
 813         // because this uses World_EntitiestoBox, we know all entity boxes overlap
 814         // the clip region, so we can skip culling checks in the loop below
 815         // note: if prog is NULL then there won't be any linked entities
 816         numtouchedicts = 0;
 817         if (hitcsqcentities && prog != NULL)
 818         {
 819                 numtouchedicts = World_EntitiesInBox(&cl.world, clipboxmins, clipboxmaxs, MAX_EDICTS, touchedicts);
 820                 if (numtouchedicts > MAX_EDICTS)
 821                 {
 822                         // this never happens
 823                         Con_Printf("CL_EntitiesInBox returned %i edicts, max was %i\n", numtouchedicts, MAX_EDICTS);
 824                         numtouchedicts = MAX_EDICTS;
 825                 }
 826         }
 827         for (i = 0;i < numtouchedicts;i++)
 828         {
 829                 touch = touchedicts[i];
 830
 831                 if (PRVM_clientedictfloat(touch, solid) < SOLID_BBOX)
 832                         continue;
 833                 if (type == MOVE_NOMONSTERS && PRVM_clientedictfloat(touch, solid) != SOLID_BSP)
 834                         continue;
 835
 836                 if (passedict)
 837                 {
 838                         // don't clip against self
 839                         if (passedict == touch)
 840                                 continue;
 841                         // don't clip owned entities against owner
 842                         if (traceowner == touch)
 843                                 continue;
 844                         // don't clip owner against owned entities
 845                         if (passedictprog == PRVM_clientedictedict(touch, owner))
 846                                 continue;
 847                         // don't clip points against points (they can't collide)
 848                         if (pointtrace && VectorCompare(PRVM_clientedictvector(touch, mins), PRVM_clientedictvector(touch, maxs)) && (type != MOVE_MISSILE || !((int)PRVM_clientedictfloat(touch, flags) & FL_MONSTER)))
 849                                 continue;
 850                 }
 851
 852                 bodysupercontents = PRVM_clientedictfloat(touch, solid) == SOLID_CORPSE ? SUPERCONTENTS_CORPSE : SUPERCONTENTS_BODY;
 853
 854                 // might interact, so do an exact clip
 855                 model = NULL;
 856                 if ((int) PRVM_clientedictfloat(touch, solid) == SOLID_BSP || type == MOVE_HITMODEL)
 857                         model = CL_GetModelFromEdict(touch);
 858                 if (model)
 859                         Matrix4x4_CreateFromQuakeEntity(&matrix, PRVM_clientedictvector(touch, origin)[0], PRVM_clientedictvector(touch, origin)[1], PRVM_clientedictvector(touch, origin)[2], PRVM_clientedictvector(touch, angles)[0], PRVM_clientedictvector(touch, angles)[1], PRVM_clientedictvector(touch, angles)[2], 1);
 860                 else
 861                         Matrix4x4_CreateTranslate(&matrix, PRVM_clientedictvector(touch, origin)[0], PRVM_clientedictvector(touch, origin)[1], PRVM_clientedictvector(touch, origin)[2]);
 862                 Matrix4x4_Invert_Simple(&imatrix, &matrix);
 863                 VectorCopy(PRVM_clientedictvector(touch, mins), touchmins);
 864                 VectorCopy(PRVM_clientedictvector(touch, maxs), touchmaxs);
 865                 if ((int)PRVM_clientedictfloat(touch, flags) & FL_MONSTER)
 866                         Collision_ClipToGenericEntity(&trace, model, touch->priv.server->frameblend, &touch->priv.server->skeleton, touchmins, touchmaxs, bodysupercontents, &matrix, &imatrix, clipstart, clipmins2, clipmaxs2, clipend, hitsupercontentsmask, skipsupercontentsmask, skipmaterialflagsmask, extend);
 867                 else
 868                         Collision_ClipToGenericEntity(&trace, model, touch->priv.server->frameblend, &touch->priv.server->skeleton, touchmins, touchmaxs, bodysupercontents, &matrix, &imatrix, clipstart, clipmins, clipmaxs, clipend, hitsupercontentsmask, skipsupercontentsmask, skipmaterialflagsmask, extend);
 869
 870                 if (cliptrace.fraction > trace.fraction && hitnetworkentity)
 871                         *hitnetworkentity = 0;
 872                 Collision_CombineTraces(&cliptrace, &trace, (void *)touch, PRVM_clientedictfloat(touch, solid) == SOLID_BSP);
 873         }
 874
 875 finished:
 876         return cliptrace;
 877 }
 878
 879 /*
 880 ==================
 881 CL_Cache_TraceLine
 882 ==================
 883 */
 884 trace_t CL_Cache_TraceLineSurfaces(const vec3_t start, const vec3_t end, int type, int hitsupercontentsmask, int skipsupercontentsmask, int skipmaterialflagsmask)
 885 {
 886         prvm_prog_t *prog = CLVM_prog;
 887         int i;
 888         prvm_edict_t *touch;
 889         trace_t trace;
 890         // bounding box of entire move area
 891         vec3_t clipboxmins, clipboxmaxs;
 892         // start and end origin of move
 893         vec3_t clipstart, clipend;
 894         // trace results
 895         trace_t cliptrace;
 896         // matrices to transform into/out of other entity's space
 897         matrix4x4_t matrix, imatrix;
 898         // model of other entity
 899         dp_model_t *model;
 900         // list of entities to test for collisions
 901         int numtouchedicts;
 902         static prvm_edict_t *touchedicts[MAX_EDICTS];
 903
 904         VectorCopy(start, clipstart);
 905         VectorCopy(end, clipend);
 906 #if COLLISIONPARANOID >= 3
 907         Con_Printf("move(%f %f %f,%f %f %f)", clipstart[0], clipstart[1], clipstart[2], clipend[0], clipend[1], clipend[2]);
 908 #endif
 909
 910         // clip to world
 911         Collision_Cache_ClipLineToWorldSurfaces(&cliptrace, cl.worldmodel, clipstart, clipend, hitsupercontentsmask, skipsupercontentsmask, skipmaterialflagsmask);
 912         cliptrace.worldstartsolid = cliptrace.bmodelstartsolid = cliptrace.startsolid;
 913         if (cliptrace.startsolid || cliptrace.fraction < 1)
 914                 cliptrace.ent = prog ? prog->edicts : NULL;
 915         if (type == MOVE_WORLDONLY)
 916                 goto finished;
 917
 918         // create the bounding box of the entire move
 919         for (i = 0;i < 3;i++)
 920         {
 921                 clipboxmins[i] = min(clipstart[i], cliptrace.endpos[i]) - 1;
 922                 clipboxmaxs[i] = max(clipstart[i], cliptrace.endpos[i]) + 1;
 923         }
 924
 925         // if the passedict is world, make it NULL (to avoid two checks each time)
 926         // this checks prog because this function is often called without a CSQC
 927         // VM context
 928
 929         // collide against network entities
 930         for (i = 0;i < cl.num_brushmodel_entities;i++)
 931         {
 932                 entity_render_t *ent = &cl.entities[cl.brushmodel_entities[i]].render;
 933                 if (!BoxesOverlap(clipboxmins, clipboxmaxs, ent->mins, ent->maxs))
 934                         continue;
 935                 Collision_Cache_ClipLineToGenericEntitySurfaces(&trace, ent->model, &ent->matrix, &ent->inversematrix, start, end, hitsupercontentsmask, skipsupercontentsmask, skipmaterialflagsmask);
 936                 Collision_CombineTraces(&cliptrace, &trace, NULL, true);
 937         }
 938
 939         // clip to entities
 940         // because this uses World_EntitiestoBox, we know all entity boxes overlap
 941         // the clip region, so we can skip culling checks in the loop below
 942         // note: if prog is NULL then there won't be any linked entities
 943         numtouchedicts = 0;
 944         if (prog != NULL)
 945         {
 946                 numtouchedicts = World_EntitiesInBox(&cl.world, clipboxmins, clipboxmaxs, MAX_EDICTS, touchedicts);
 947                 if (numtouchedicts > MAX_EDICTS)
 948                 {
 949                         // this never happens
 950                         Con_Printf("CL_EntitiesInBox returned %i edicts, max was %i\n", numtouchedicts, MAX_EDICTS);
 951                         numtouchedicts = MAX_EDICTS;
 952                 }
 953         }
 954         for (i = 0;i < numtouchedicts;i++)
 955         {
 956                 touch = touchedicts[i];
 957                 // might interact, so do an exact clip
 958                 // only hit entity models, not collision shapes
 959                 model = CL_GetModelFromEdict(touch);
 960                 if (!model)
 961                         continue;
 962                 // animated models are not suitable for caching
 963                 if ((touch->priv.server->frameblend && (touch->priv.server->frameblend[0].lerp != 1.0 || touch->priv.server->frameblend[0].subframe != 0)) || touch->priv.server->skeleton.relativetransforms)
 964                         continue;
 965                 if (type == MOVE_NOMONSTERS && PRVM_clientedictfloat(touch, solid) != SOLID_BSP)
 966                         continue;
 967                 Matrix4x4_CreateFromQuakeEntity(&matrix, PRVM_clientedictvector(touch, origin)[0], PRVM_clientedictvector(touch, origin)[1], PRVM_clientedictvector(touch, origin)[2], PRVM_clientedictvector(touch, angles)[0], PRVM_clientedictvector(touch, angles)[1], PRVM_clientedictvector(touch, angles)[2], 1);
 968                 Matrix4x4_Invert_Simple(&imatrix, &matrix);
 969                 Collision_Cache_ClipLineToGenericEntitySurfaces(&trace, model, &matrix, &imatrix, clipstart, clipend, hitsupercontentsmask, skipsupercontentsmask, skipmaterialflagsmask);
 970                 Collision_CombineTraces(&cliptrace, &trace, (void *)touch, PRVM_clientedictfloat(touch, solid) == SOLID_BSP);
 971         }
 972
 973 finished:
 974         return cliptrace;
 975 }
 976