cl_collision.c

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