duplicated PRVM_ExecuteProgram to become MVM_ExecuteProgram,
[divverent/darkplaces.git] / 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))
22         {
23                 // TRICK: make the trace 1 qu longer!
24                 VectorSubtract(pEnd, start, end);
25                 len = VectorNormalizeLength(end);
26                 VectorAdd(pEnd, 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, 0, &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))
76                         Collision_ShortenTrace(&trace, len / (len + 1), pEnd);
77 #endif
78                 if (maxrealfrac < trace.realfraction)
79                         continue;
80
81                 ent->model->TraceLine(ent->model, ent->frameblend[0].subframe, &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 && developer.integer >= 1)
161                                 Con_Printf("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         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[0].subframe, 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)
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)
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, 0, 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                 {
413                         unsigned int modelindex = (unsigned int)touch->fields.client->modelindex;
414                         // if the modelindex is 0, it shouldn't be SOLID_BSP!
415                         if (modelindex > 0 && modelindex < MAX_MODELS)
416                                 model = cl.model_precache[(int)touch->fields.client->modelindex];
417                 }
418                 if (model)
419                         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);
420                 else
421                         Matrix4x4_CreateTranslate(&matrix, touch->fields.client->origin[0], touch->fields.client->origin[1], touch->fields.client->origin[2]);
422                 Matrix4x4_Invert_Simple(&imatrix, &matrix);
423                 if ((int)touch->fields.client->flags & FL_MONSTER)
424                         Collision_ClipToGenericEntity(&trace, model, (int) touch->fields.client->frame, touch->fields.client->mins, touch->fields.client->maxs, bodysupercontents, &matrix, &imatrix, clipstart, clipmins2, clipmaxs2, clipstart, hitsupercontentsmask);
425                 else
426                         Collision_ClipPointToGenericEntity(&trace, model, (int) touch->fields.client->frame, touch->fields.client->mins, touch->fields.client->maxs, bodysupercontents, &matrix, &imatrix, clipstart, hitsupercontentsmask);
427
428                 if (cliptrace.realfraction > trace.realfraction && hitnetworkentity)
429                         *hitnetworkentity = 0;
430                 Collision_CombineTraces(&cliptrace, &trace, (void *)touch, touch->fields.client->solid == SOLID_BSP);
431         }
432
433 finished:
434         return cliptrace;
435 }
436
437 /*
438 ==================
439 CL_TraceLine
440 ==================
441 */
442 #ifdef COLLISION_STUPID_TRACE_ENDPOS_IN_SOLID_WORKAROUND
443 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)
444 #else
445 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)
446 #endif
447 {
448         int i, bodysupercontents;
449         int passedictprog;
450         prvm_edict_t *traceowner, *touch;
451         trace_t trace;
452         // bounding box of entire move area
453         vec3_t clipboxmins, clipboxmaxs;
454         // size when clipping against monsters
455         vec3_t clipmins2, clipmaxs2;
456         // start and end origin of move
457         vec3_t clipstart, clipend;
458         // trace results
459         trace_t cliptrace;
460         // matrices to transform into/out of other entity's space
461         matrix4x4_t matrix, imatrix;
462         // model of other entity
463         dp_model_t *model;
464         // list of entities to test for collisions
465         int numtouchedicts;
466         prvm_edict_t *touchedicts[MAX_EDICTS];
467 #ifdef COLLISION_STUPID_TRACE_ENDPOS_IN_SOLID_WORKAROUND
468         vec3_t end;
469         vec_t len = 0;
470
471         if(!VectorCompare(start, pEnd))
472         {
473                 // TRICK: make the trace 1 qu longer!
474                 VectorSubtract(pEnd, start, end);
475                 len = VectorNormalizeLength(end);
476                 VectorAdd(pEnd, end, end);
477         }
478         else
479                 VectorCopy(pEnd, end);
480 #endif
481
482         if (VectorCompare(start, end))
483                 return CL_TracePoint(start, type, passedict, hitsupercontentsmask, hitnetworkbrushmodels, hitnetworkplayers, hitnetworkentity, hitcsqcentities);
484
485         if (hitnetworkentity)
486                 *hitnetworkentity = 0;
487
488         VectorCopy(start, clipstart);
489         VectorCopy(end, clipend);
490         VectorClear(clipmins2);
491         VectorClear(clipmaxs2);
492 #if COLLISIONPARANOID >= 3
493         Con_Printf("move(%f %f %f,%f %f %f)", clipstart[0], clipstart[1], clipstart[2], clipend[0], clipend[1], clipend[2]);
494 #endif
495
496         // clip to world
497         Collision_ClipLineToWorld(&cliptrace, cl.worldmodel, clipstart, clipend, hitsupercontentsmask);
498         cliptrace.bmodelstartsolid = cliptrace.startsolid;
499         if (cliptrace.startsolid || cliptrace.fraction < 1)
500                 cliptrace.ent = prog ? prog->edicts : NULL;
501         if (type == MOVE_WORLDONLY)
502                 goto finished;
503
504         if (type == MOVE_MISSILE)
505         {
506                 // LordHavoc: modified this, was = -15, now -= 15
507                 for (i = 0;i < 3;i++)
508                 {
509                         clipmins2[i] -= 15;
510                         clipmaxs2[i] += 15;
511                 }
512         }
513
514         // create the bounding box of the entire move
515         for (i = 0;i < 3;i++)
516         {
517                 clipboxmins[i] = min(clipstart[i], cliptrace.endpos[i]) + clipmins2[i] - 1;
518                 clipboxmaxs[i] = max(clipstart[i], cliptrace.endpos[i]) + clipmaxs2[i] + 1;
519         }
520
521         // debug override to test against everything
522         if (sv_debugmove.integer)
523         {
524                 clipboxmins[0] = clipboxmins[1] = clipboxmins[2] = -999999999;
525                 clipboxmaxs[0] = clipboxmaxs[1] = clipboxmaxs[2] =  999999999;
526         }
527
528         // if the passedict is world, make it NULL (to avoid two checks each time)
529         // this checks prog because this function is often called without a CSQC
530         // VM context
531         if (prog == NULL || passedict == prog->edicts)
532                 passedict = NULL;
533         // precalculate prog value for passedict for comparisons
534         passedictprog = prog != NULL ? PRVM_EDICT_TO_PROG(passedict) : 0;
535         // precalculate passedict's owner edict pointer for comparisons
536         traceowner = passedict ? PRVM_PROG_TO_EDICT(passedict->fields.client->owner) : NULL;
537
538         // collide against network entities
539         if (hitnetworkbrushmodels)
540         {
541                 for (i = 0;i < cl.num_brushmodel_entities;i++)
542                 {
543                         entity_render_t *ent = &cl.entities[cl.brushmodel_entities[i]].render;
544                         if (!BoxesOverlap(clipboxmins, clipboxmaxs, ent->mins, ent->maxs))
545                                 continue;
546                         Collision_ClipLineToGenericEntity(&trace, ent->model, ent->frameblend[0].subframe, vec3_origin, vec3_origin, 0, &ent->matrix, &ent->inversematrix, start, end, hitsupercontentsmask);
547                         if (cliptrace.realfraction > trace.realfraction && hitnetworkentity)
548                                 *hitnetworkentity = cl.brushmodel_entities[i];
549                         Collision_CombineTraces(&cliptrace, &trace, NULL, true);
550                 }
551         }
552
553         // collide against player entities
554         if (hitnetworkplayers)
555         {
556                 vec3_t origin, entmins, entmaxs;
557                 matrix4x4_t entmatrix, entinversematrix;
558
559                 if(gamemode == GAME_NEXUIZ)
560                 {
561                         // don't hit network players, if we are a nonsolid player
562                         if(cl.scores[cl.playerentity-1].frags == -666 || cl.scores[cl.playerentity-1].frags == -616)
563                                 goto skipnetworkplayers;
564                 }
565
566                 for (i = 1;i <= cl.maxclients;i++)
567                 {
568                         entity_render_t *ent = &cl.entities[i].render;
569
570                         // don't hit ourselves
571                         if (i == cl.playerentity)
572                                 continue;
573
574                         // don't hit players that don't exist
575                         if (!cl.scores[i-1].name[0])
576                                 continue;
577
578                         if(gamemode == GAME_NEXUIZ)
579                         {
580                                 // don't hit spectators or nonsolid players
581                                 if(cl.scores[i-1].frags == -666 || cl.scores[i-1].frags == -616)
582                                         continue;
583                         }
584
585                         Matrix4x4_OriginFromMatrix(&ent->matrix, origin);
586                         VectorAdd(origin, cl.playerstandmins, entmins);
587                         VectorAdd(origin, cl.playerstandmaxs, entmaxs);
588                         if (!BoxesOverlap(clipboxmins, clipboxmaxs, entmins, entmaxs))
589                                 continue;
590                         Matrix4x4_CreateTranslate(&entmatrix, origin[0], origin[1], origin[2]);
591                         Matrix4x4_CreateTranslate(&entinversematrix, -origin[0], -origin[1], -origin[2]);
592                         Collision_ClipLineToGenericEntity(&trace, NULL, 0, cl.playerstandmins, cl.playerstandmaxs, SUPERCONTENTS_BODY, &entmatrix, &entinversematrix, start, end, hitsupercontentsmask);
593                         if (cliptrace.realfraction > trace.realfraction && hitnetworkentity)
594                                 *hitnetworkentity = i;
595                         Collision_CombineTraces(&cliptrace, &trace, NULL, false);
596                 }
597
598 skipnetworkplayers:
599                 ;
600         }
601
602         // clip to entities
603         // because this uses World_EntitiestoBox, we know all entity boxes overlap
604         // the clip region, so we can skip culling checks in the loop below
605         // note: if prog is NULL then there won't be any linked entities
606         numtouchedicts = 0;
607         if (hitcsqcentities && prog != NULL)
608         {
609                 numtouchedicts = World_EntitiesInBox(&cl.world, clipboxmins, clipboxmaxs, MAX_EDICTS, touchedicts);
610                 if (numtouchedicts > MAX_EDICTS)
611                 {
612                         // this never happens
613                         Con_Printf("CL_EntitiesInBox returned %i edicts, max was %i\n", numtouchedicts, MAX_EDICTS);
614                         numtouchedicts = MAX_EDICTS;
615                 }
616         }
617         for (i = 0;i < numtouchedicts;i++)
618         {
619                 touch = touchedicts[i];
620
621                 if (touch->fields.client->solid < SOLID_BBOX)
622                         continue;
623                 if (type == MOVE_NOMONSTERS && touch->fields.client->solid != SOLID_BSP)
624                         continue;
625
626                 if (passedict)
627                 {
628                         // don't clip against self
629                         if (passedict == touch)
630                                 continue;
631                         // don't clip owned entities against owner
632                         if (traceowner == touch)
633                                 continue;
634                         // don't clip owner against owned entities
635                         if (passedictprog == touch->fields.client->owner)
636                                 continue;
637                         // don't clip points against points (they can't collide)
638                         if (VectorCompare(touch->fields.client->mins, touch->fields.client->maxs) && (type != MOVE_MISSILE || !((int)touch->fields.client->flags & FL_MONSTER)))
639                                 continue;
640                 }
641
642                 bodysupercontents = touch->fields.client->solid == SOLID_CORPSE ? SUPERCONTENTS_CORPSE : SUPERCONTENTS_BODY;
643
644                 // might interact, so do an exact clip
645                 model = NULL;
646                 if ((int) touch->fields.client->solid == SOLID_BSP || type == MOVE_HITMODEL)
647                 {
648                         unsigned int modelindex = (unsigned int)touch->fields.client->modelindex;
649                         // if the modelindex is 0, it shouldn't be SOLID_BSP!
650                         if (modelindex > 0 && modelindex < MAX_MODELS)
651                                 model = cl.model_precache[(int)touch->fields.client->modelindex];
652                 }
653                 if (model)
654                         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);
655                 else
656                         Matrix4x4_CreateTranslate(&matrix, touch->fields.client->origin[0], touch->fields.client->origin[1], touch->fields.client->origin[2]);
657                 Matrix4x4_Invert_Simple(&imatrix, &matrix);
658                 if (type == MOVE_MISSILE && (int)touch->fields.client->flags & FL_MONSTER)
659                         Collision_ClipToGenericEntity(&trace, model, (int) touch->fields.client->frame, touch->fields.client->mins, touch->fields.client->maxs, bodysupercontents, &matrix, &imatrix, clipstart, clipmins2, clipmaxs2, clipend, hitsupercontentsmask);
660                 else
661                         Collision_ClipLineToGenericEntity(&trace, model, (int) touch->fields.client->frame, touch->fields.client->mins, touch->fields.client->maxs, bodysupercontents, &matrix, &imatrix, clipstart, clipend, hitsupercontentsmask);
662
663                 if (cliptrace.realfraction > trace.realfraction && hitnetworkentity)
664                         *hitnetworkentity = 0;
665                 Collision_CombineTraces(&cliptrace, &trace, (void *)touch, touch->fields.client->solid == SOLID_BSP);
666         }
667
668 finished:
669 #ifdef COLLISION_STUPID_TRACE_ENDPOS_IN_SOLID_WORKAROUND
670         if(!VectorCompare(start, pEnd))
671                 Collision_ShortenTrace(&cliptrace, len / (len + 1), pEnd);
672 #endif
673         return cliptrace;
674 }
675
676 /*
677 ==================
678 CL_Move
679 ==================
680 */
681 #ifdef COLLISION_STUPID_TRACE_ENDPOS_IN_SOLID_WORKAROUND
682 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)
683 #else
684 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)
685 #endif
686 {
687         vec3_t hullmins, hullmaxs;
688         int i, bodysupercontents;
689         int passedictprog;
690         qboolean pointtrace;
691         prvm_edict_t *traceowner, *touch;
692         trace_t trace;
693         // bounding box of entire move area
694         vec3_t clipboxmins, clipboxmaxs;
695         // size of the moving object
696         vec3_t clipmins, clipmaxs;
697         // size when clipping against monsters
698         vec3_t clipmins2, clipmaxs2;
699         // start and end origin of move
700         vec3_t clipstart, clipend;
701         // trace results
702         trace_t cliptrace;
703         // matrices to transform into/out of other entity's space
704         matrix4x4_t matrix, imatrix;
705         // model of other entity
706         dp_model_t *model;
707         // list of entities to test for collisions
708         int numtouchedicts;
709         prvm_edict_t *touchedicts[MAX_EDICTS];
710 #ifdef COLLISION_STUPID_TRACE_ENDPOS_IN_SOLID_WORKAROUND
711         vec3_t end;
712         vec_t len = 0;
713
714         if(!VectorCompare(start, pEnd))
715         {
716                 // TRICK: make the trace 1 qu longer!
717                 VectorSubtract(pEnd, start, end);
718                 len = VectorNormalizeLength(end);
719                 VectorAdd(pEnd, end, end);
720         }
721         else
722                 VectorCopy(pEnd, end);
723 #endif
724
725         if (VectorCompare(mins, maxs))
726         {
727                 vec3_t shiftstart, shiftend;
728                 VectorAdd(start, mins, shiftstart);
729                 VectorAdd(end, mins, shiftend);
730                 if (VectorCompare(start, end))
731                         trace = CL_TracePoint(shiftstart, type, passedict, hitsupercontentsmask, hitnetworkbrushmodels, hitnetworkplayers, hitnetworkentity, hitcsqcentities);
732                 else
733                         trace = CL_TraceLine(shiftstart, shiftend, type, passedict, hitsupercontentsmask, hitnetworkbrushmodels, hitnetworkplayers, hitnetworkentity, hitcsqcentities);
734                 VectorSubtract(trace.endpos, mins, trace.endpos);
735                 return trace;
736         }
737
738         if (hitnetworkentity)
739                 *hitnetworkentity = 0;
740
741         VectorCopy(start, clipstart);
742         VectorCopy(end, clipend);
743         VectorCopy(mins, clipmins);
744         VectorCopy(maxs, clipmaxs);
745         VectorCopy(mins, clipmins2);
746         VectorCopy(maxs, clipmaxs2);
747 #if COLLISIONPARANOID >= 3
748         Con_Printf("move(%f %f %f,%f %f %f)", clipstart[0], clipstart[1], clipstart[2], clipend[0], clipend[1], clipend[2]);
749 #endif
750
751         // clip to world
752         Collision_ClipToWorld(&cliptrace, cl.worldmodel, clipstart, clipmins, clipmaxs, clipend, hitsupercontentsmask);
753         cliptrace.bmodelstartsolid = cliptrace.startsolid;
754         if (cliptrace.startsolid || cliptrace.fraction < 1)
755                 cliptrace.ent = prog ? prog->edicts : NULL;
756         if (type == MOVE_WORLDONLY)
757                 goto finished;
758
759         if (type == MOVE_MISSILE)
760         {
761                 // LordHavoc: modified this, was = -15, now -= 15
762                 for (i = 0;i < 3;i++)
763                 {
764                         clipmins2[i] -= 15;
765                         clipmaxs2[i] += 15;
766                 }
767         }
768
769         // get adjusted box for bmodel collisions if the world is q1bsp or hlbsp
770         if (cl.worldmodel && cl.worldmodel->brush.RoundUpToHullSize)
771                 cl.worldmodel->brush.RoundUpToHullSize(cl.worldmodel, clipmins, clipmaxs, hullmins, hullmaxs);
772         else
773         {
774                 VectorCopy(clipmins, hullmins);
775                 VectorCopy(clipmaxs, hullmaxs);
776         }
777
778         // create the bounding box of the entire move
779         for (i = 0;i < 3;i++)
780         {
781                 clipboxmins[i] = min(clipstart[i], cliptrace.endpos[i]) + min(hullmins[i], clipmins2[i]) - 1;
782                 clipboxmaxs[i] = max(clipstart[i], cliptrace.endpos[i]) + max(hullmaxs[i], clipmaxs2[i]) + 1;
783         }
784
785         // debug override to test against everything
786         if (sv_debugmove.integer)
787         {
788                 clipboxmins[0] = clipboxmins[1] = clipboxmins[2] = -999999999;
789                 clipboxmaxs[0] = clipboxmaxs[1] = clipboxmaxs[2] =  999999999;
790         }
791
792         // if the passedict is world, make it NULL (to avoid two checks each time)
793         // this checks prog because this function is often called without a CSQC
794         // VM context
795         if (prog == NULL || passedict == prog->edicts)
796                 passedict = NULL;
797         // precalculate prog value for passedict for comparisons
798         passedictprog = prog != NULL ? PRVM_EDICT_TO_PROG(passedict) : 0;
799         // figure out whether this is a point trace for comparisons
800         pointtrace = VectorCompare(clipmins, clipmaxs);
801         // precalculate passedict's owner edict pointer for comparisons
802         traceowner = passedict ? PRVM_PROG_TO_EDICT(passedict->fields.client->owner) : NULL;
803
804         // collide against network entities
805         if (hitnetworkbrushmodels)
806         {
807                 for (i = 0;i < cl.num_brushmodel_entities;i++)
808                 {
809                         entity_render_t *ent = &cl.entities[cl.brushmodel_entities[i]].render;
810                         if (!BoxesOverlap(clipboxmins, clipboxmaxs, ent->mins, ent->maxs))
811                                 continue;
812                         Collision_ClipToGenericEntity(&trace, ent->model, ent->frameblend[0].subframe, vec3_origin, vec3_origin, 0, &ent->matrix, &ent->inversematrix, start, mins, maxs, end, hitsupercontentsmask);
813                         if (cliptrace.realfraction > trace.realfraction && hitnetworkentity)
814                                 *hitnetworkentity = cl.brushmodel_entities[i];
815                         Collision_CombineTraces(&cliptrace, &trace, NULL, true);
816                 }
817         }
818
819         // collide against player entities
820         if (hitnetworkplayers)
821         {
822                 vec3_t origin, entmins, entmaxs;
823                 matrix4x4_t entmatrix, entinversematrix;
824
825                 if(gamemode == GAME_NEXUIZ)
826                 {
827                         // don't hit network players, if we are a nonsolid player
828                         if(cl.scores[cl.playerentity-1].frags == -666 || cl.scores[cl.playerentity-1].frags == -616)
829                                 goto skipnetworkplayers;
830                 }
831
832                 for (i = 1;i <= cl.maxclients;i++)
833                 {
834                         entity_render_t *ent = &cl.entities[i].render;
835
836                         // don't hit ourselves
837                         if (i == cl.playerentity)
838                                 continue;
839
840                         // don't hit players that don't exist
841                         if (!cl.scores[i-1].name[0])
842                                 continue;
843
844                         if(gamemode == GAME_NEXUIZ)
845                         {
846                                 // don't hit spectators or nonsolid players
847                                 if(cl.scores[i-1].frags == -666 || cl.scores[i-1].frags == -616)
848                                         continue;
849                         }
850
851                         Matrix4x4_OriginFromMatrix(&ent->matrix, origin);
852                         VectorAdd(origin, cl.playerstandmins, entmins);
853                         VectorAdd(origin, cl.playerstandmaxs, entmaxs);
854                         if (!BoxesOverlap(clipboxmins, clipboxmaxs, entmins, entmaxs))
855                                 continue;
856                         Matrix4x4_CreateTranslate(&entmatrix, origin[0], origin[1], origin[2]);
857                         Matrix4x4_CreateTranslate(&entinversematrix, -origin[0], -origin[1], -origin[2]);
858                         Collision_ClipToGenericEntity(&trace, NULL, 0, cl.playerstandmins, cl.playerstandmaxs, SUPERCONTENTS_BODY, &entmatrix, &entinversematrix, start, mins, maxs, end, hitsupercontentsmask);
859                         if (cliptrace.realfraction > trace.realfraction && hitnetworkentity)
860                                 *hitnetworkentity = i;
861                         Collision_CombineTraces(&cliptrace, &trace, NULL, false);
862                 }
863
864 skipnetworkplayers:
865                 ;
866         }
867
868         // clip to entities
869         // because this uses World_EntitiestoBox, we know all entity boxes overlap
870         // the clip region, so we can skip culling checks in the loop below
871         // note: if prog is NULL then there won't be any linked entities
872         numtouchedicts = 0;
873         if (hitcsqcentities && prog != NULL)
874         {
875                 numtouchedicts = World_EntitiesInBox(&cl.world, clipboxmins, clipboxmaxs, MAX_EDICTS, touchedicts);
876                 if (numtouchedicts > MAX_EDICTS)
877                 {
878                         // this never happens
879                         Con_Printf("CL_EntitiesInBox returned %i edicts, max was %i\n", numtouchedicts, MAX_EDICTS);
880                         numtouchedicts = MAX_EDICTS;
881                 }
882         }
883         for (i = 0;i < numtouchedicts;i++)
884         {
885                 touch = touchedicts[i];
886
887                 if (touch->fields.client->solid < SOLID_BBOX)
888                         continue;
889                 if (type == MOVE_NOMONSTERS && touch->fields.client->solid != SOLID_BSP)
890                         continue;
891
892                 if (passedict)
893                 {
894                         // don't clip against self
895                         if (passedict == touch)
896                                 continue;
897                         // don't clip owned entities against owner
898                         if (traceowner == touch)
899                                 continue;
900                         // don't clip owner against owned entities
901                         if (passedictprog == touch->fields.client->owner)
902                                 continue;
903                         // don't clip points against points (they can't collide)
904                         if (pointtrace && VectorCompare(touch->fields.client->mins, touch->fields.client->maxs) && (type != MOVE_MISSILE || !((int)touch->fields.client->flags & FL_MONSTER)))
905                                 continue;
906                 }
907
908                 bodysupercontents = touch->fields.client->solid == SOLID_CORPSE ? SUPERCONTENTS_CORPSE : SUPERCONTENTS_BODY;
909
910                 // might interact, so do an exact clip
911                 model = NULL;
912                 if ((int) touch->fields.client->solid == SOLID_BSP || type == MOVE_HITMODEL)
913                 {
914                         unsigned int modelindex = (unsigned int)touch->fields.client->modelindex;
915                         // if the modelindex is 0, it shouldn't be SOLID_BSP!
916                         if (modelindex > 0 && modelindex < MAX_MODELS)
917                                 model = cl.model_precache[(int)touch->fields.client->modelindex];
918                 }
919                 if (model)
920                         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);
921                 else
922                         Matrix4x4_CreateTranslate(&matrix, touch->fields.client->origin[0], touch->fields.client->origin[1], touch->fields.client->origin[2]);
923                 Matrix4x4_Invert_Simple(&imatrix, &matrix);
924                 if ((int)touch->fields.client->flags & FL_MONSTER)
925                         Collision_ClipToGenericEntity(&trace, model, (int) touch->fields.client->frame, touch->fields.client->mins, touch->fields.client->maxs, bodysupercontents, &matrix, &imatrix, clipstart, clipmins2, clipmaxs2, clipend, hitsupercontentsmask);
926                 else
927                         Collision_ClipToGenericEntity(&trace, model, (int) touch->fields.client->frame, touch->fields.client->mins, touch->fields.client->maxs, bodysupercontents, &matrix, &imatrix, clipstart, clipmins, clipmaxs, clipend, hitsupercontentsmask);
928
929                 if (cliptrace.realfraction > trace.realfraction && hitnetworkentity)
930                         *hitnetworkentity = 0;
931                 Collision_CombineTraces(&cliptrace, &trace, (void *)touch, touch->fields.client->solid == SOLID_BSP);
932         }
933
934 finished:
935 #ifdef COLLISION_STUPID_TRACE_ENDPOS_IN_SOLID_WORKAROUND
936         if(!VectorCompare(start, pEnd))
937                 Collision_ShortenTrace(&cliptrace, len / (len + 1), pEnd);
938 #endif
939         return cliptrace;
940 }