again, a stupid fix for stupid MSVC not supporting a 11 years old C standard
[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) && 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)
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, 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) && collision_endposnudge.value > 0)
467         {
468                 // TRICK: make the trace 1 qu longer!
469                 VectorSubtract(pEnd, start, end);
470                 len = VectorNormalizeLength(end);
471                 VectorMA(pEnd, collision_endposnudge.value, end, end);
472         }
473         else
474                 VectorCopy(pEnd, end);
475 #endif
476
477         if (VectorCompare(start, end))
478                 return CL_TracePoint(start, type, passedict, hitsupercontentsmask, hitnetworkbrushmodels, hitnetworkplayers, hitnetworkentity, hitcsqcentities);
479
480         if (hitnetworkentity)
481                 *hitnetworkentity = 0;
482
483         VectorCopy(start, clipstart);
484         VectorCopy(end, clipend);
485         VectorClear(clipmins2);
486         VectorClear(clipmaxs2);
487 #if COLLISIONPARANOID >= 3
488         Con_Printf("move(%f %f %f,%f %f %f)", clipstart[0], clipstart[1], clipstart[2], clipend[0], clipend[1], clipend[2]);
489 #endif
490
491         // clip to world
492         Collision_ClipLineToWorld(&cliptrace, cl.worldmodel, clipstart, clipend, hitsupercontentsmask);
493         cliptrace.bmodelstartsolid = cliptrace.startsolid;
494         if (cliptrace.startsolid || cliptrace.fraction < 1)
495                 cliptrace.ent = prog ? prog->edicts : NULL;
496         if (type == MOVE_WORLDONLY)
497                 goto finished;
498
499         if (type == MOVE_MISSILE)
500         {
501                 // LordHavoc: modified this, was = -15, now -= 15
502                 for (i = 0;i < 3;i++)
503                 {
504                         clipmins2[i] -= 15;
505                         clipmaxs2[i] += 15;
506                 }
507         }
508
509         // create the bounding box of the entire move
510         for (i = 0;i < 3;i++)
511         {
512                 clipboxmins[i] = min(clipstart[i], cliptrace.endpos[i]) + clipmins2[i] - 1;
513                 clipboxmaxs[i] = max(clipstart[i], cliptrace.endpos[i]) + clipmaxs2[i] + 1;
514         }
515
516         // debug override to test against everything
517         if (sv_debugmove.integer)
518         {
519                 clipboxmins[0] = clipboxmins[1] = clipboxmins[2] = -999999999;
520                 clipboxmaxs[0] = clipboxmaxs[1] = clipboxmaxs[2] =  999999999;
521         }
522
523         // if the passedict is world, make it NULL (to avoid two checks each time)
524         // this checks prog because this function is often called without a CSQC
525         // VM context
526         if (prog == NULL || passedict == prog->edicts)
527                 passedict = NULL;
528         // precalculate prog value for passedict for comparisons
529         passedictprog = prog != NULL ? PRVM_EDICT_TO_PROG(passedict) : 0;
530         // precalculate passedict's owner edict pointer for comparisons
531         traceowner = passedict ? PRVM_PROG_TO_EDICT(passedict->fields.client->owner) : NULL;
532
533         // collide against network entities
534         if (hitnetworkbrushmodels)
535         {
536                 for (i = 0;i < cl.num_brushmodel_entities;i++)
537                 {
538                         entity_render_t *ent = &cl.entities[cl.brushmodel_entities[i]].render;
539                         if (!BoxesOverlap(clipboxmins, clipboxmaxs, ent->mins, ent->maxs))
540                                 continue;
541                         Collision_ClipLineToGenericEntity(&trace, ent->model, ent->frameblend, ent->skeleton, vec3_origin, vec3_origin, 0, &ent->matrix, &ent->inversematrix, start, end, hitsupercontentsmask);
542                         if (cliptrace.realfraction > trace.realfraction && hitnetworkentity)
543                                 *hitnetworkentity = cl.brushmodel_entities[i];
544                         Collision_CombineTraces(&cliptrace, &trace, NULL, true);
545                 }
546         }
547
548         // collide against player entities
549         if (hitnetworkplayers)
550         {
551                 vec3_t origin, entmins, entmaxs;
552                 matrix4x4_t entmatrix, entinversematrix;
553
554                 if(gamemode == GAME_NEXUIZ)
555                 {
556                         // don't hit network players, if we are a nonsolid player
557                         if(cl.scores[cl.playerentity-1].frags == -666 || cl.scores[cl.playerentity-1].frags == -616)
558                                 goto skipnetworkplayers;
559                 }
560
561                 for (i = 1;i <= cl.maxclients;i++)
562                 {
563                         entity_render_t *ent = &cl.entities[i].render;
564
565                         // don't hit ourselves
566                         if (i == cl.playerentity)
567                                 continue;
568
569                         // don't hit players that don't exist
570                         if (!cl.scores[i-1].name[0])
571                                 continue;
572
573                         if(gamemode == GAME_NEXUIZ)
574                         {
575                                 // don't hit spectators or nonsolid players
576                                 if(cl.scores[i-1].frags == -666 || cl.scores[i-1].frags == -616)
577                                         continue;
578                         }
579
580                         Matrix4x4_OriginFromMatrix(&ent->matrix, origin);
581                         VectorAdd(origin, cl.playerstandmins, entmins);
582                         VectorAdd(origin, cl.playerstandmaxs, entmaxs);
583                         if (!BoxesOverlap(clipboxmins, clipboxmaxs, entmins, entmaxs))
584                                 continue;
585                         Matrix4x4_CreateTranslate(&entmatrix, origin[0], origin[1], origin[2]);
586                         Matrix4x4_CreateTranslate(&entinversematrix, -origin[0], -origin[1], -origin[2]);
587                         Collision_ClipLineToGenericEntity(&trace, NULL, NULL, NULL, cl.playerstandmins, cl.playerstandmaxs, SUPERCONTENTS_BODY, &entmatrix, &entinversematrix, start, end, hitsupercontentsmask);
588                         if (cliptrace.realfraction > trace.realfraction && hitnetworkentity)
589                                 *hitnetworkentity = i;
590                         Collision_CombineTraces(&cliptrace, &trace, NULL, false);
591                 }
592
593 skipnetworkplayers:
594                 ;
595         }
596
597         // clip to entities
598         // because this uses World_EntitiestoBox, we know all entity boxes overlap
599         // the clip region, so we can skip culling checks in the loop below
600         // note: if prog is NULL then there won't be any linked entities
601         numtouchedicts = 0;
602         if (hitcsqcentities && prog != NULL)
603         {
604                 numtouchedicts = World_EntitiesInBox(&cl.world, clipboxmins, clipboxmaxs, MAX_EDICTS, touchedicts);
605                 if (numtouchedicts > MAX_EDICTS)
606                 {
607                         // this never happens
608                         Con_Printf("CL_EntitiesInBox returned %i edicts, max was %i\n", numtouchedicts, MAX_EDICTS);
609                         numtouchedicts = MAX_EDICTS;
610                 }
611         }
612         for (i = 0;i < numtouchedicts;i++)
613         {
614                 touch = touchedicts[i];
615
616                 if (touch->fields.client->solid < SOLID_BBOX)
617                         continue;
618                 if (type == MOVE_NOMONSTERS && touch->fields.client->solid != SOLID_BSP)
619                         continue;
620
621                 if (passedict)
622                 {
623                         // don't clip against self
624                         if (passedict == touch)
625                                 continue;
626                         // don't clip owned entities against owner
627                         if (traceowner == touch)
628                                 continue;
629                         // don't clip owner against owned entities
630                         if (passedictprog == touch->fields.client->owner)
631                                 continue;
632                         // don't clip points against points (they can't collide)
633                         if (VectorCompare(touch->fields.client->mins, touch->fields.client->maxs) && (type != MOVE_MISSILE || !((int)touch->fields.client->flags & FL_MONSTER)))
634                                 continue;
635                 }
636
637                 bodysupercontents = touch->fields.client->solid == SOLID_CORPSE ? SUPERCONTENTS_CORPSE : SUPERCONTENTS_BODY;
638
639                 // might interact, so do an exact clip
640                 model = NULL;
641                 if ((int) touch->fields.client->solid == SOLID_BSP || type == MOVE_HITMODEL)
642                         model = CL_GetModelFromEdict(touch);
643                 if (model)
644                         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);
645                 else
646                         Matrix4x4_CreateTranslate(&matrix, touch->fields.client->origin[0], touch->fields.client->origin[1], touch->fields.client->origin[2]);
647                 Matrix4x4_Invert_Simple(&imatrix, &matrix);
648                 if (type == MOVE_MISSILE && (int)touch->fields.client->flags & FL_MONSTER)
649                         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);
650                 else
651                         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);
652
653                 if (cliptrace.realfraction > trace.realfraction && hitnetworkentity)
654                         *hitnetworkentity = 0;
655                 Collision_CombineTraces(&cliptrace, &trace, (void *)touch, touch->fields.client->solid == SOLID_BSP);
656         }
657
658 finished:
659 #ifdef COLLISION_STUPID_TRACE_ENDPOS_IN_SOLID_WORKAROUND
660         if(!VectorCompare(start, pEnd) && collision_endposnudge.value > 0)
661                 Collision_ShortenTrace(&cliptrace, len / (len + collision_endposnudge.value), pEnd);
662 #endif
663         return cliptrace;
664 }
665
666 /*
667 ==================
668 CL_Move
669 ==================
670 */
671 #ifdef COLLISION_STUPID_TRACE_ENDPOS_IN_SOLID_WORKAROUND
672 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)
673 #else
674 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)
675 #endif
676 {
677         vec3_t hullmins, hullmaxs;
678         int i, bodysupercontents;
679         int passedictprog;
680         qboolean pointtrace;
681         prvm_edict_t *traceowner, *touch;
682         trace_t trace;
683         // bounding box of entire move area
684         vec3_t clipboxmins, clipboxmaxs;
685         // size of the moving object
686         vec3_t clipmins, clipmaxs;
687         // size when clipping against monsters
688         vec3_t clipmins2, clipmaxs2;
689         // start and end origin of move
690         vec3_t clipstart, clipend;
691         // trace results
692         trace_t cliptrace;
693         // matrices to transform into/out of other entity's space
694         matrix4x4_t matrix, imatrix;
695         // model of other entity
696         dp_model_t *model;
697         // list of entities to test for collisions
698         int numtouchedicts;
699         static prvm_edict_t *touchedicts[MAX_EDICTS];
700 #ifdef COLLISION_STUPID_TRACE_ENDPOS_IN_SOLID_WORKAROUND
701         vec3_t end;
702         vec_t len = 0;
703
704         if(!VectorCompare(start, pEnd) && collision_endposnudge.value > 0)
705         {
706                 // TRICK: make the trace 1 qu longer!
707                 VectorSubtract(pEnd, start, end);
708                 len = VectorNormalizeLength(end);
709                 VectorMA(pEnd, collision_endposnudge.value, end, end);
710         }
711         else
712                 VectorCopy(pEnd, end);
713 #endif
714
715         if (VectorCompare(mins, maxs))
716         {
717                 vec3_t shiftstart, shiftend;
718                 VectorAdd(start, mins, shiftstart);
719                 VectorAdd(end, mins, shiftend);
720                 if (VectorCompare(start, end))
721                         trace = CL_TracePoint(shiftstart, type, passedict, hitsupercontentsmask, hitnetworkbrushmodels, hitnetworkplayers, hitnetworkentity, hitcsqcentities);
722                 else
723                         trace = CL_TraceLine(shiftstart, shiftend, type, passedict, hitsupercontentsmask, hitnetworkbrushmodels, hitnetworkplayers, hitnetworkentity, hitcsqcentities);
724                 VectorSubtract(trace.endpos, mins, trace.endpos);
725                 return trace;
726         }
727
728         if (hitnetworkentity)
729                 *hitnetworkentity = 0;
730
731         VectorCopy(start, clipstart);
732         VectorCopy(end, clipend);
733         VectorCopy(mins, clipmins);
734         VectorCopy(maxs, clipmaxs);
735         VectorCopy(mins, clipmins2);
736         VectorCopy(maxs, clipmaxs2);
737 #if COLLISIONPARANOID >= 3
738         Con_Printf("move(%f %f %f,%f %f %f)", clipstart[0], clipstart[1], clipstart[2], clipend[0], clipend[1], clipend[2]);
739 #endif
740
741         // clip to world
742         Collision_ClipToWorld(&cliptrace, cl.worldmodel, clipstart, clipmins, clipmaxs, clipend, hitsupercontentsmask);
743         cliptrace.bmodelstartsolid = cliptrace.startsolid;
744         if (cliptrace.startsolid || cliptrace.fraction < 1)
745                 cliptrace.ent = prog ? prog->edicts : NULL;
746         if (type == MOVE_WORLDONLY)
747                 goto finished;
748
749         if (type == MOVE_MISSILE)
750         {
751                 // LordHavoc: modified this, was = -15, now -= 15
752                 for (i = 0;i < 3;i++)
753                 {
754                         clipmins2[i] -= 15;
755                         clipmaxs2[i] += 15;
756                 }
757         }
758
759         // get adjusted box for bmodel collisions if the world is q1bsp or hlbsp
760         if (cl.worldmodel && cl.worldmodel->brush.RoundUpToHullSize)
761                 cl.worldmodel->brush.RoundUpToHullSize(cl.worldmodel, clipmins, clipmaxs, hullmins, hullmaxs);
762         else
763         {
764                 VectorCopy(clipmins, hullmins);
765                 VectorCopy(clipmaxs, hullmaxs);
766         }
767
768         // create the bounding box of the entire move
769         for (i = 0;i < 3;i++)
770         {
771                 clipboxmins[i] = min(clipstart[i], cliptrace.endpos[i]) + min(hullmins[i], clipmins2[i]) - 1;
772                 clipboxmaxs[i] = max(clipstart[i], cliptrace.endpos[i]) + max(hullmaxs[i], clipmaxs2[i]) + 1;
773         }
774
775         // debug override to test against everything
776         if (sv_debugmove.integer)
777         {
778                 clipboxmins[0] = clipboxmins[1] = clipboxmins[2] = -999999999;
779                 clipboxmaxs[0] = clipboxmaxs[1] = clipboxmaxs[2] =  999999999;
780         }
781
782         // if the passedict is world, make it NULL (to avoid two checks each time)
783         // this checks prog because this function is often called without a CSQC
784         // VM context
785         if (prog == NULL || passedict == prog->edicts)
786                 passedict = NULL;
787         // precalculate prog value for passedict for comparisons
788         passedictprog = prog != NULL ? PRVM_EDICT_TO_PROG(passedict) : 0;
789         // figure out whether this is a point trace for comparisons
790         pointtrace = VectorCompare(clipmins, clipmaxs);
791         // precalculate passedict's owner edict pointer for comparisons
792         traceowner = passedict ? PRVM_PROG_TO_EDICT(passedict->fields.client->owner) : NULL;
793
794         // collide against network entities
795         if (hitnetworkbrushmodels)
796         {
797                 for (i = 0;i < cl.num_brushmodel_entities;i++)
798                 {
799                         entity_render_t *ent = &cl.entities[cl.brushmodel_entities[i]].render;
800                         if (!BoxesOverlap(clipboxmins, clipboxmaxs, ent->mins, ent->maxs))
801                                 continue;
802                         Collision_ClipToGenericEntity(&trace, ent->model, ent->frameblend, ent->skeleton, vec3_origin, vec3_origin, 0, &ent->matrix, &ent->inversematrix, start, mins, maxs, end, hitsupercontentsmask);
803                         if (cliptrace.realfraction > trace.realfraction && hitnetworkentity)
804                                 *hitnetworkentity = cl.brushmodel_entities[i];
805                         Collision_CombineTraces(&cliptrace, &trace, NULL, true);
806                 }
807         }
808
809         // collide against player entities
810         if (hitnetworkplayers)
811         {
812                 vec3_t origin, entmins, entmaxs;
813                 matrix4x4_t entmatrix, entinversematrix;
814
815                 if(gamemode == GAME_NEXUIZ)
816                 {
817                         // don't hit network players, if we are a nonsolid player
818                         if(cl.scores[cl.playerentity-1].frags == -666 || cl.scores[cl.playerentity-1].frags == -616)
819                                 goto skipnetworkplayers;
820                 }
821
822                 for (i = 1;i <= cl.maxclients;i++)
823                 {
824                         entity_render_t *ent = &cl.entities[i].render;
825
826                         // don't hit ourselves
827                         if (i == cl.playerentity)
828                                 continue;
829
830                         // don't hit players that don't exist
831                         if (!cl.scores[i-1].name[0])
832                                 continue;
833
834                         if(gamemode == GAME_NEXUIZ)
835                         {
836                                 // don't hit spectators or nonsolid players
837                                 if(cl.scores[i-1].frags == -666 || cl.scores[i-1].frags == -616)
838                                         continue;
839                         }
840
841                         Matrix4x4_OriginFromMatrix(&ent->matrix, origin);
842                         VectorAdd(origin, cl.playerstandmins, entmins);
843                         VectorAdd(origin, cl.playerstandmaxs, entmaxs);
844                         if (!BoxesOverlap(clipboxmins, clipboxmaxs, entmins, entmaxs))
845                                 continue;
846                         Matrix4x4_CreateTranslate(&entmatrix, origin[0], origin[1], origin[2]);
847                         Matrix4x4_CreateTranslate(&entinversematrix, -origin[0], -origin[1], -origin[2]);
848                         Collision_ClipToGenericEntity(&trace, NULL, NULL, NULL, cl.playerstandmins, cl.playerstandmaxs, SUPERCONTENTS_BODY, &entmatrix, &entinversematrix, start, mins, maxs, end, hitsupercontentsmask);
849                         if (cliptrace.realfraction > trace.realfraction && hitnetworkentity)
850                                 *hitnetworkentity = i;
851                         Collision_CombineTraces(&cliptrace, &trace, NULL, false);
852                 }
853
854 skipnetworkplayers:
855                 ;
856         }
857
858         // clip to entities
859         // because this uses World_EntitiestoBox, we know all entity boxes overlap
860         // the clip region, so we can skip culling checks in the loop below
861         // note: if prog is NULL then there won't be any linked entities
862         numtouchedicts = 0;
863         if (hitcsqcentities && prog != NULL)
864         {
865                 numtouchedicts = World_EntitiesInBox(&cl.world, clipboxmins, clipboxmaxs, MAX_EDICTS, touchedicts);
866                 if (numtouchedicts > MAX_EDICTS)
867                 {
868                         // this never happens
869                         Con_Printf("CL_EntitiesInBox returned %i edicts, max was %i\n", numtouchedicts, MAX_EDICTS);
870                         numtouchedicts = MAX_EDICTS;
871                 }
872         }
873         for (i = 0;i < numtouchedicts;i++)
874         {
875                 touch = touchedicts[i];
876
877                 if (touch->fields.client->solid < SOLID_BBOX)
878                         continue;
879                 if (type == MOVE_NOMONSTERS && touch->fields.client->solid != SOLID_BSP)
880                         continue;
881
882                 if (passedict)
883                 {
884                         // don't clip against self
885                         if (passedict == touch)
886                                 continue;
887                         // don't clip owned entities against owner
888                         if (traceowner == touch)
889                                 continue;
890                         // don't clip owner against owned entities
891                         if (passedictprog == touch->fields.client->owner)
892                                 continue;
893                         // don't clip points against points (they can't collide)
894                         if (pointtrace && VectorCompare(touch->fields.client->mins, touch->fields.client->maxs) && (type != MOVE_MISSILE || !((int)touch->fields.client->flags & FL_MONSTER)))
895                                 continue;
896                 }
897
898                 bodysupercontents = touch->fields.client->solid == SOLID_CORPSE ? SUPERCONTENTS_CORPSE : SUPERCONTENTS_BODY;
899
900                 // might interact, so do an exact clip
901                 model = NULL;
902                 if ((int) touch->fields.client->solid == SOLID_BSP || type == MOVE_HITMODEL)
903                         model = CL_GetModelFromEdict(touch);
904                 if (model)
905                         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);
906                 else
907                         Matrix4x4_CreateTranslate(&matrix, touch->fields.client->origin[0], touch->fields.client->origin[1], touch->fields.client->origin[2]);
908                 Matrix4x4_Invert_Simple(&imatrix, &matrix);
909                 if ((int)touch->fields.client->flags & FL_MONSTER)
910                         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);
911                 else
912                         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);
913
914                 if (cliptrace.realfraction > trace.realfraction && hitnetworkentity)
915                         *hitnetworkentity = 0;
916                 Collision_CombineTraces(&cliptrace, &trace, (void *)touch, touch->fields.client->solid == SOLID_BSP);
917         }
918
919 finished:
920 #ifdef COLLISION_STUPID_TRACE_ENDPOS_IN_SOLID_WORKAROUND
921         if(!VectorCompare(start, pEnd) && collision_endposnudge.value > 0)
922                 Collision_ShortenTrace(&cliptrace, len / (len + collision_endposnudge.value), pEnd);
923 #endif
924         return cliptrace;
925 }