fix monsters ignoring player underwater if a bmodel is in the area (inopen was being...
[divverent/darkplaces.git] / world.c
1 /*
2 Copyright (C) 1996-1997 Id Software, Inc.
3
4 This program is free software; you can redistribute it and/or
5 modify it under the terms of the GNU General Public License
6 as published by the Free Software Foundation; either version 2
7 of the License, or (at your option) any later version.
8
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
12
13 See the GNU General Public License for more details.
14
15 You should have received a copy of the GNU General Public License
16 along with this program; if not, write to the Free Software
17 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
18
19 */
20 // world.c -- world query functions
21
22 #include "quakedef.h"
23
24 /*
25
26 entities never clip against themselves, or their owner
27
28 line of sight checks trace->inopen and trace->inwater, but bullets don't
29
30 */
31
32 cvar_t sv_debugmove = {CVAR_NOTIFY, "sv_debugmove", "0"};
33 cvar_t sv_areagrid_mingridsize = {CVAR_NOTIFY, "sv_areagrid_mingridsize", "64"};
34
35 void SV_AreaStats_f(void);
36
37 void SV_World_Init(void)
38 {
39         Cvar_RegisterVariable(&sv_debugmove);
40         Cvar_RegisterVariable(&sv_areagrid_mingridsize);
41         Cmd_AddCommand("sv_areastats", SV_AreaStats_f);
42         Collision_Init();
43 }
44
45 typedef struct
46 {
47         // bounding box of entire move area
48         vec3_t boxmins, boxmaxs;
49
50         // size of the moving object
51         vec3_t mins, maxs;
52
53         // size when clipping against monsters
54         vec3_t mins2, maxs2;
55
56         // start and end origin of move
57         vec3_t start, end;
58
59         // trace results
60         trace_t trace;
61
62         // type of move (like ignoring monsters, or similar)
63         int type;
64
65         // the edict that is moving (if any)
66         edict_t *passedict;
67 }
68 moveclip_t;
69
70 //============================================================================
71
72 // ClearLink is used for new headnodes
73 static void ClearLink (link_t *l)
74 {
75         l->entitynumber = 0;
76         l->prev = l->next = l;
77 }
78
79 static void RemoveLink (link_t *l)
80 {
81         l->next->prev = l->prev;
82         l->prev->next = l->next;
83 }
84
85 static void InsertLinkBefore (link_t *l, link_t *before, int entitynumber)
86 {
87         l->entitynumber = entitynumber;
88         l->next = before;
89         l->prev = before->prev;
90         l->prev->next = l;
91         l->next->prev = l;
92 }
93
94
95 /*
96 ===============================================================================
97
98 ENTITY AREA CHECKING
99
100 ===============================================================================
101 */
102
103 int sv_areagrid_stats_calls = 0;
104 int sv_areagrid_stats_nodechecks = 0;
105 int sv_areagrid_stats_entitychecks = 0;
106
107 void SV_AreaStats_f(void)
108 {
109         Con_Printf("areagrid check stats: %d calls %d nodes (%f per call) %d entities (%f per call)\n", sv_areagrid_stats_calls, sv_areagrid_stats_nodechecks, (double) sv_areagrid_stats_nodechecks / (double) sv_areagrid_stats_calls, sv_areagrid_stats_entitychecks, (double) sv_areagrid_stats_entitychecks / (double) sv_areagrid_stats_calls);
110         sv_areagrid_stats_calls = 0;
111         sv_areagrid_stats_nodechecks = 0;
112         sv_areagrid_stats_entitychecks = 0;
113 }
114
115 typedef struct areagrid_s
116 {
117         link_t trigger_edicts;
118         link_t solid_edicts;
119 }
120 areagrid_t;
121
122 #define AREA_GRID 512
123 #define AREA_GRIDNODES (AREA_GRID * AREA_GRID)
124
125 static areagrid_t sv_areagrid[AREA_GRIDNODES], sv_areagrid_outside;
126 static vec3_t sv_areagrid_bias, sv_areagrid_scale, sv_areagrid_mins, sv_areagrid_maxs, sv_areagrid_size;
127 static int sv_areagrid_marknumber = 1;
128
129 void SV_CreateAreaGrid (vec3_t mins, vec3_t maxs)
130 {
131         int i;
132         ClearLink (&sv_areagrid_outside.trigger_edicts);
133         ClearLink (&sv_areagrid_outside.solid_edicts);
134         // choose either the world box size, or a larger box to ensure the grid isn't too fine
135         sv_areagrid_size[0] = max(maxs[0] - mins[0], AREA_GRID * sv_areagrid_mingridsize.value);
136         sv_areagrid_size[1] = max(maxs[1] - mins[1], AREA_GRID * sv_areagrid_mingridsize.value);
137         sv_areagrid_size[2] = max(maxs[2] - mins[2], AREA_GRID * sv_areagrid_mingridsize.value);
138         // figure out the corners of such a box, centered at the center of the world box
139         sv_areagrid_mins[0] = (mins[0] + maxs[0] - sv_areagrid_size[0]) * 0.5f;
140         sv_areagrid_mins[1] = (mins[1] + maxs[1] - sv_areagrid_size[1]) * 0.5f;
141         sv_areagrid_mins[2] = (mins[2] + maxs[2] - sv_areagrid_size[2]) * 0.5f;
142         sv_areagrid_maxs[0] = (mins[0] + maxs[0] + sv_areagrid_size[0]) * 0.5f;
143         sv_areagrid_maxs[1] = (mins[1] + maxs[1] + sv_areagrid_size[1]) * 0.5f;
144         sv_areagrid_maxs[2] = (mins[2] + maxs[2] + sv_areagrid_size[2]) * 0.5f;
145         // now calculate the actual useful info from that
146         VectorNegate(sv_areagrid_mins, sv_areagrid_bias);
147         sv_areagrid_scale[0] = AREA_GRID / sv_areagrid_size[0];
148         sv_areagrid_scale[1] = AREA_GRID / sv_areagrid_size[1];
149         sv_areagrid_scale[2] = AREA_GRID / sv_areagrid_size[2];
150         for (i = 0;i < AREA_GRIDNODES;i++)
151         {
152                 ClearLink (&sv_areagrid[i].trigger_edicts);
153                 ClearLink (&sv_areagrid[i].solid_edicts);
154         }
155         Con_DPrintf("sv_areagrid settings: divisions %ix%ix1 : box %f %f %f : %f %f %f size %f %f %f grid %f %f %f (mingrid %f)\n", AREA_GRID, AREA_GRID, sv_areagrid_mins[0], sv_areagrid_mins[1], sv_areagrid_mins[2], sv_areagrid_maxs[0], sv_areagrid_maxs[1], sv_areagrid_maxs[2], sv_areagrid_size[0], sv_areagrid_size[1], sv_areagrid_size[2], 1.0f / sv_areagrid_scale[0], 1.0f / sv_areagrid_scale[1], 1.0f / sv_areagrid_scale[2], sv_areagrid_mingridsize.value);
156 }
157
158 /*
159 ===============
160 SV_ClearWorld
161
162 ===============
163 */
164 void SV_ClearWorld (void)
165 {
166         Mod_CheckLoaded(sv.worldmodel);
167         SV_CreateAreaGrid(sv.worldmodel->normalmins, sv.worldmodel->normalmaxs);
168 }
169
170
171 /*
172 ===============
173 SV_UnlinkEdict
174
175 ===============
176 */
177 void SV_UnlinkEdict (edict_t *ent)
178 {
179         int i;
180         for (i = 0;i < ENTITYGRIDAREAS;i++)
181         {
182                 if (ent->e->areagrid[i].prev)
183                 {
184                         RemoveLink (&ent->e->areagrid[i]);
185                         ent->e->areagrid[i].prev = ent->e->areagrid[i].next = NULL;
186                 }
187         }
188 }
189
190
191 void SV_TouchAreaGrid(edict_t *ent)
192 {
193         link_t *l;
194         edict_t *touch;
195         areagrid_t *grid;
196         int old_self, old_other, igrid[3], igridmins[3], igridmaxs[3];
197         int i, numtouchedicts;
198         unsigned short touchedictnumbers[MAX_EDICTS];
199
200         sv_areagrid_marknumber++;
201         igridmins[0] = (int) ((ent->v->absmin[0] + sv_areagrid_bias[0]) * sv_areagrid_scale[0]);
202         igridmins[1] = (int) ((ent->v->absmin[1] + sv_areagrid_bias[1]) * sv_areagrid_scale[1]);
203         //igridmins[2] = (int) ((ent->v->absmin[2] + sv_areagrid_bias[2]) * sv_areagrid_scale[2]);
204         igridmaxs[0] = (int) ((ent->v->absmax[0] + sv_areagrid_bias[0]) * sv_areagrid_scale[0]) + 1;
205         igridmaxs[1] = (int) ((ent->v->absmax[1] + sv_areagrid_bias[1]) * sv_areagrid_scale[1]) + 1;
206         //igridmaxs[2] = (int) ((ent->v->absmax[2] + sv_areagrid_bias[2]) * sv_areagrid_scale[2]) + 1;
207         igridmins[0] = max(0, igridmins[0]);
208         igridmins[1] = max(0, igridmins[1]);
209         //igridmins[2] = max(0, igridmins[2]);
210         igridmaxs[0] = min(AREA_GRID, igridmaxs[0]);
211         igridmaxs[1] = min(AREA_GRID, igridmaxs[1]);
212         //igridmaxs[2] = min(AREA_GRID, igridmaxs[2]);
213
214         // build a list of edicts to touch, because the link loop can be corrupted
215         // by SV_IncreaseEdicts called during touch functions
216         numtouchedicts = 0;
217         for (l = sv_areagrid_outside.trigger_edicts.next;l != &sv_areagrid_outside.trigger_edicts;l = l->next)
218                 touchedictnumbers[numtouchedicts++] = l->entitynumber;
219
220         for (igrid[1] = igridmins[1];igrid[1] < igridmaxs[1];igrid[1]++)
221         {
222                 grid = sv_areagrid + igrid[1] * AREA_GRID + igridmins[0];
223                 for (igrid[0] = igridmins[0];igrid[0] < igridmaxs[0];igrid[0]++, grid++)
224                         for (l = grid->trigger_edicts.next;l != &grid->trigger_edicts;l = l->next)
225                                 touchedictnumbers[numtouchedicts++] = l->entitynumber;
226         }
227
228         old_self = pr_global_struct->self;
229         old_other = pr_global_struct->other;
230         for (i = 0;i < numtouchedicts && !ent->e->free;i++)
231         {
232                 touch = EDICT_NUM_UNSIGNED(touchedictnumbers[i]);
233                 if (ent->v->absmin[0] > touch->v->absmax[0]
234                  || ent->v->absmax[0] < touch->v->absmin[0]
235                  || ent->v->absmin[1] > touch->v->absmax[1]
236                  || ent->v->absmax[1] < touch->v->absmin[1]
237                  || ent->v->absmin[2] > touch->v->absmax[2]
238                  || ent->v->absmax[2] < touch->v->absmin[2])
239                         continue;
240                 if (touch == ent)
241                         continue;
242                 if (!touch->v->touch || touch->v->solid != SOLID_TRIGGER)
243                         continue;
244                 pr_global_struct->self = EDICT_TO_PROG(touch);
245                 pr_global_struct->other = EDICT_TO_PROG(ent);
246                 pr_global_struct->time = sv.time;
247                 PR_ExecuteProgram (touch->v->touch, "");
248         }
249         pr_global_struct->self = old_self;
250         pr_global_struct->other = old_other;
251 }
252
253 void SV_LinkEdict_AreaGrid(edict_t *ent)
254 {
255         areagrid_t *grid;
256         int igrid[3], igridmins[3], igridmaxs[3], gridnum, entitynumber = NUM_FOR_EDICT(ent);
257
258         if (entitynumber <= 0 || entitynumber >= sv.max_edicts || EDICT_NUM(entitynumber) != ent)
259                 Host_Error("SV_LinkEdict_AreaGrid: invalid edict %p (sv.edicts is %p, edict compared to sv.edicts is %i)\n", ent, sv.edicts, entitynumber);
260
261         igridmins[0] = (int) ((ent->v->absmin[0] + sv_areagrid_bias[0]) * sv_areagrid_scale[0]);
262         igridmins[1] = (int) ((ent->v->absmin[1] + sv_areagrid_bias[1]) * sv_areagrid_scale[1]);
263         //igridmins[2] = (int) ((ent->v->absmin[2] + sv_areagrid_bias[2]) * sv_areagrid_scale[2]);
264         igridmaxs[0] = (int) ((ent->v->absmax[0] + sv_areagrid_bias[0]) * sv_areagrid_scale[0]) + 1;
265         igridmaxs[1] = (int) ((ent->v->absmax[1] + sv_areagrid_bias[1]) * sv_areagrid_scale[1]) + 1;
266         //igridmaxs[2] = (int) ((ent->v->absmax[2] + sv_areagrid_bias[2]) * sv_areagrid_scale[2]) + 1;
267         if (igridmins[0] < 0 || igridmaxs[0] > AREA_GRID || igridmins[1] < 0 || igridmaxs[1] > AREA_GRID || ((igridmaxs[0] - igridmins[0]) * (igridmaxs[1] - igridmins[1])) > ENTITYGRIDAREAS)
268         {
269                 // wow, something outside the grid, store it as such
270                 if (ent->v->solid == SOLID_TRIGGER)
271                         InsertLinkBefore (&ent->e->areagrid[0], &sv_areagrid_outside.trigger_edicts, entitynumber);
272                 else
273                         InsertLinkBefore (&ent->e->areagrid[0], &sv_areagrid_outside.solid_edicts, entitynumber);
274                 return;
275         }
276
277         gridnum = 0;
278         for (igrid[1] = igridmins[1];igrid[1] < igridmaxs[1];igrid[1]++)
279         {
280                 grid = sv_areagrid + igrid[1] * AREA_GRID + igridmins[0];
281                 for (igrid[0] = igridmins[0];igrid[0] < igridmaxs[0];igrid[0]++, grid++, gridnum++)
282                 {
283                         if (ent->v->solid == SOLID_TRIGGER)
284                                 InsertLinkBefore (&ent->e->areagrid[gridnum], &grid->trigger_edicts, entitynumber);
285                         else
286                                 InsertLinkBefore (&ent->e->areagrid[gridnum], &grid->solid_edicts, entitynumber);
287                 }
288         }
289 }
290
291 /*
292 ===============
293 SV_LinkEdict
294
295 ===============
296 */
297 void SV_LinkEdict (edict_t *ent, qboolean touch_triggers)
298 {
299         model_t *model;
300
301         if (ent->e->areagrid[0].prev)
302                 SV_UnlinkEdict (ent);   // unlink from old position
303
304         if (ent == sv.edicts)
305                 return;         // don't add the world
306
307         if (ent->e->free)
308                 return;
309
310 // set the abs box
311
312         if (ent->v->solid == SOLID_BSP)
313         {
314                 if (ent->v->modelindex < 0 || ent->v->modelindex > MAX_MODELS)
315                         Host_Error("SOLID_BSP with invalid modelindex!\n");
316                 model = sv.models[(int) ent->v->modelindex];
317                 if (model != NULL)
318                 {
319                         Mod_CheckLoaded(model);
320                         if (!model->TraceBox)
321                                 Host_Error("SOLID_BSP with non-collidable model\n");
322
323                         if (ent->v->angles[0] || ent->v->angles[2] || ent->v->avelocity[0] || ent->v->avelocity[2])
324                         {
325                                 VectorAdd(ent->v->origin, model->rotatedmins, ent->v->absmin);
326                                 VectorAdd(ent->v->origin, model->rotatedmaxs, ent->v->absmax);
327                         }
328                         else if (ent->v->angles[1] || ent->v->avelocity[1])
329                         {
330                                 VectorAdd(ent->v->origin, model->yawmins, ent->v->absmin);
331                                 VectorAdd(ent->v->origin, model->yawmaxs, ent->v->absmax);
332                         }
333                         else
334                         {
335                                 VectorAdd(ent->v->origin, model->normalmins, ent->v->absmin);
336                                 VectorAdd(ent->v->origin, model->normalmaxs, ent->v->absmax);
337                         }
338                 }
339                 else
340                 {
341                         // SOLID_BSP with no model is valid, mainly because some QC setup code does so temporarily
342                         VectorAdd(ent->v->origin, ent->v->mins, ent->v->absmin);
343                         VectorAdd(ent->v->origin, ent->v->maxs, ent->v->absmax);
344                 }
345         }
346         else
347         {
348                 VectorAdd(ent->v->origin, ent->v->mins, ent->v->absmin);
349                 VectorAdd(ent->v->origin, ent->v->maxs, ent->v->absmax);
350         }
351
352 //
353 // to make items easier to pick up and allow them to be grabbed off
354 // of shelves, the abs sizes are expanded
355 //
356         if ((int)ent->v->flags & FL_ITEM)
357         {
358                 ent->v->absmin[0] -= 15;
359                 ent->v->absmin[1] -= 15;
360                 ent->v->absmin[2] -= 1;
361                 ent->v->absmax[0] += 15;
362                 ent->v->absmax[1] += 15;
363                 ent->v->absmax[2] += 1;
364         }
365         else
366         {
367                 // because movement is clipped an epsilon away from an actual edge,
368                 // we must fully check even when bounding boxes don't quite touch
369                 ent->v->absmin[0] -= 1;
370                 ent->v->absmin[1] -= 1;
371                 ent->v->absmin[2] -= 1;
372                 ent->v->absmax[0] += 1;
373                 ent->v->absmax[1] += 1;
374                 ent->v->absmax[2] += 1;
375         }
376
377         if (ent->v->solid == SOLID_NOT)
378                 return;
379
380         SV_LinkEdict_AreaGrid(ent);
381
382 // if touch_triggers, touch all entities at this node and descend for more
383         if (touch_triggers)
384                 SV_TouchAreaGrid(ent);
385 }
386
387
388
389 /*
390 ===============================================================================
391
392 POINT TESTING IN HULLS
393
394 ===============================================================================
395 */
396
397 /*
398 ============
399 SV_TestEntityPosition
400
401 This could be a lot more efficient...
402 ============
403 */
404 int SV_TestEntityPosition (edict_t *ent)
405 {
406         return SV_Move (ent->v->origin, ent->v->mins, ent->v->maxs, ent->v->origin, MOVE_NORMAL, ent).startsolid;
407 }
408
409
410 /*
411 ===============================================================================
412
413 LINE TESTING IN HULLS
414
415 ===============================================================================
416 */
417
418 /*
419 ==================
420 SV_ClipMoveToEntity
421
422 Handles selection or creation of a clipping hull, and offseting (and
423 eventually rotation) of the end points
424 ==================
425 */
426 trace_t SV_ClipMoveToEntity(edict_t *ent, const vec3_t start, const vec3_t mins, const vec3_t maxs, const vec3_t end, int movetype)
427 {
428         int i;
429         trace_t trace;
430         model_t *model = NULL;
431         matrix4x4_t matrix, imatrix;
432         float tempnormal[3], starttransformed[3], endtransformed[3];
433         float starttransformedmins[3], starttransformedmaxs[3], endtransformedmins[3], endtransformedmaxs[3];
434
435         if ((int) ent->v->solid == SOLID_BSP || movetype == MOVE_HITMODEL)
436         {
437                 i = ent->v->modelindex;
438                 // if the modelindex is 0, it shouldn't be SOLID_BSP!
439                 if (i == 0)
440                 {
441                         Con_Printf("SV_ClipMoveToEntity: edict %i: SOLID_BSP with no model\n", NUM_FOR_EDICT(ent));
442                         memset(&trace, 0, sizeof(trace));
443                         return trace;
444                 }
445                 if ((unsigned int) i >= MAX_MODELS)
446                 {
447                         Con_Printf("SV_ClipMoveToEntity: edict %i: SOLID_BSP with invalid modelindex\n", NUM_FOR_EDICT(ent));
448                         memset(&trace, 0, sizeof(trace));
449                         return trace;
450                 }
451                 model = sv.models[i];
452                 if (i != 0 && model == NULL)
453                 {
454                         Con_Printf("SV_ClipMoveToEntity: edict %i: SOLID_BSP with invalid modelindex\n", NUM_FOR_EDICT(ent));
455                         memset(&trace, 0, sizeof(trace));
456                         return trace;
457                 }
458
459                 Mod_CheckLoaded(model);
460                 if ((int) ent->v->solid == SOLID_BSP)
461                 {
462                         if (!model->TraceBox)
463                         {
464                                 Con_Printf("SV_ClipMoveToEntity: edict %i: SOLID_BSP with a non-collidable model\n", NUM_FOR_EDICT(ent));
465                                 memset(&trace, 0, sizeof(trace));
466                                 return trace;
467                         }
468                         if (ent->v->movetype != MOVETYPE_PUSH)
469                         {
470                                 Con_Printf("SV_ClipMoveToEntity: edict %i: SOLID_BSP without MOVETYPE_PUSH\n", NUM_FOR_EDICT(ent));
471                                 memset(&trace, 0, sizeof(trace));
472                                 return trace;
473                         }
474                 }
475                 Matrix4x4_CreateFromQuakeEntity(&matrix, ent->v->origin[0], ent->v->origin[1], ent->v->origin[2], ent->v->angles[0], ent->v->angles[1], ent->v->angles[2], 1);
476         }
477         else
478                 Matrix4x4_CreateTranslate(&matrix, ent->v->origin[0], ent->v->origin[1], ent->v->origin[2]);
479
480         Matrix4x4_Invert_Simple(&imatrix, &matrix);
481         Matrix4x4_Transform(&imatrix, start, starttransformed);
482         Matrix4x4_Transform(&imatrix, end, endtransformed);
483 #if COLLISIONPARANOID >= 3
484         Con_Printf("trans(%f %f %f -> %f %f %f, %f %f %f -> %f %f %f)", start[0], start[1], start[2], starttransformed[0], starttransformed[1], starttransformed[2], end[0], end[1], end[2], endtransformed[0], endtransformed[1], endtransformed[2]);
485 #endif
486
487         if (model && model->TraceBox)
488         {
489                 int frame;
490                 frame = (int)ent->v->frame;
491                 frame = bound(0, frame, (model->numframes - 1));
492                 VectorAdd(starttransformed, maxs, starttransformedmaxs);
493                 VectorAdd(endtransformed, maxs, endtransformedmaxs);
494                 VectorAdd(starttransformed, mins, starttransformedmins);
495                 VectorAdd(endtransformed, mins, endtransformedmins);
496                 model->TraceBox(model, frame, &trace, starttransformedmins, starttransformedmaxs, endtransformedmins, endtransformedmaxs, SUPERCONTENTS_SOLID);
497         }
498         else
499                 Collision_ClipTrace_Box(&trace, ent->v->mins, ent->v->maxs, starttransformed, mins, maxs, endtransformed, SUPERCONTENTS_SOLID, SUPERCONTENTS_SOLID);
500
501         if (trace.fraction < 1)
502         {
503                 VectorLerp(start, trace.fraction, end, trace.endpos);
504                 VectorCopy(trace.plane.normal, tempnormal);
505                 Matrix4x4_Transform3x3(&matrix, tempnormal, trace.plane.normal);
506                 // FIXME: should recalc trace.plane.dist
507         }
508         else
509                 VectorCopy(end, trace.endpos);
510
511         return trace;
512 }
513
514 //===========================================================================
515
516 void SV_ClipToNode(moveclip_t *clip, link_t *list)
517 {
518         link_t *l, *next;
519         edict_t *touch;
520         trace_t trace;
521
522         sv_areagrid_stats_nodechecks++;
523         for (l = list->next;l != list;l = next)
524         {
525                 next = l->next;
526                 touch = EDICT_NUM(l->entitynumber);
527                 if (touch->e->areagridmarknumber == sv_areagrid_marknumber)
528                         continue;
529                 touch->e->areagridmarknumber = sv_areagrid_marknumber;
530                 sv_areagrid_stats_entitychecks++;
531
532                 // LordHavoc: this box comparison isn't much use with the high resolution areagrid
533                 /*
534                 if (clip->boxmins[0] > touch->v->absmax[0]
535                  || clip->boxmaxs[0] < touch->v->absmin[0]
536                  || clip->boxmins[1] > touch->v->absmax[1]
537                  || clip->boxmaxs[1] < touch->v->absmin[1]
538                  || clip->boxmins[2] > touch->v->absmax[2]
539                  || clip->boxmaxs[2] < touch->v->absmin[2])
540                         continue;
541                 */
542
543                 if (clip->type == MOVE_NOMONSTERS && touch->v->solid != SOLID_BSP)
544                         continue;
545
546                 if (touch->v->solid == SOLID_NOT)
547                         continue;
548
549                 if (clip->passedict)
550                 {
551                         if (touch == clip->passedict)
552                                 continue;
553                         if (!clip->passedict->v->size[0] && !touch->v->size[0])
554                                 continue;       // points never interact
555                         if (PROG_TO_EDICT(touch->v->owner) == clip->passedict)
556                                 continue;       // don't clip against own missiles
557                         if (PROG_TO_EDICT(clip->passedict->v->owner) == touch)
558                                 continue;       // don't clip against owner
559                         // LordHavoc: corpse code
560                         if (clip->passedict->v->solid == SOLID_CORPSE && (touch->v->solid == SOLID_SLIDEBOX || touch->v->solid == SOLID_CORPSE))
561                                 continue;
562                         if (clip->passedict->v->solid == SOLID_SLIDEBOX && touch->v->solid == SOLID_CORPSE)
563                                 continue;
564                 }
565
566                 if (touch->v->solid == SOLID_TRIGGER)
567                 {
568                         ED_Print(touch);
569                         Host_Error ("Trigger in clipping list");
570                 }
571
572                 // might interact, so do an exact clip
573                 if ((int)touch->v->flags & FL_MONSTER)
574                         trace = SV_ClipMoveToEntity(touch, clip->start, clip->mins2, clip->maxs2, clip->end, clip->type);
575                 else
576                         trace = SV_ClipMoveToEntity(touch, clip->start, clip->mins, clip->maxs, clip->end, clip->type);
577                 // LordHavoc: take the 'best' answers from the new trace and combine with existing data
578                 if (trace.allsolid)
579                         clip->trace.allsolid = true;
580                 if (trace.startsolid)
581                 {
582                         clip->trace.startsolid = true;
583                         if (clip->trace.realfraction == 1)
584                                 clip->trace.ent = touch;
585                 }
586                 // don't set this except on the world, because it can easily confuse
587                 // monsters underwater if there's a bmodel involved in the trace
588                 // (inopen && inwater is how they check water visibility)
589                 //if (trace.inopen)
590                 //      clip->trace.inopen = true;
591                 if (trace.inwater)
592                         clip->trace.inwater = true;
593                 if (trace.realfraction < clip->trace.realfraction)
594                 {
595                         clip->trace.fraction = trace.fraction;
596                         clip->trace.realfraction = trace.realfraction;
597                         VectorCopy(trace.endpos, clip->trace.endpos);
598                         clip->trace.plane = trace.plane;
599                         clip->trace.ent = touch;
600                 }
601                 clip->trace.startsupercontents |= trace.startsupercontents;
602         }
603 }
604
605 /*
606 ==================
607 SV_Move
608 ==================
609 */
610 #if COLLISIONPARANOID >= 1
611 trace_t SV_Move_(const vec3_t start, const vec3_t mins, const vec3_t maxs, const vec3_t end, int type, edict_t *passedict)
612 #else
613 trace_t SV_Move(const vec3_t start, const vec3_t mins, const vec3_t maxs, const vec3_t end, int type, edict_t *passedict)
614 #endif
615 {
616         moveclip_t clip;
617         vec3_t hullmins, hullmaxs;
618         areagrid_t *grid;
619         int i, igrid[3], igridmins[3], igridmaxs[3];
620
621         // if the passedict is world, make it NULL (to avoid two checks each time)
622         if (passedict == sv.edicts)
623                 passedict = NULL;
624
625         memset(&clip, 0, sizeof(moveclip_t));
626
627         VectorCopy(start, clip.start);
628         VectorCopy(end, clip.end);
629         VectorCopy(mins, clip.mins);
630         VectorCopy(maxs, clip.maxs);
631         VectorCopy(mins, clip.mins2);
632         VectorCopy(maxs, clip.maxs2);
633         clip.type = type;
634         clip.passedict = passedict;
635 #if COLLISIONPARANOID >= 3
636         Con_Printf("move(%f %f %f,%f %f %f)", clip.start[0], clip.start[1], clip.start[2], clip.end[0], clip.end[1], clip.end[2]);
637 #endif
638
639         // clip to world
640         clip.trace = SV_ClipMoveToEntity(sv.edicts, clip.start, clip.mins, clip.maxs, clip.end, clip.type);
641         if (clip.trace.startsolid || clip.trace.fraction < 1)
642                 clip.trace.ent = sv.edicts;
643         if (clip.type == MOVE_WORLDONLY)
644                 return clip.trace;
645
646         if (clip.type == MOVE_MISSILE)
647         {
648                 // LordHavoc: modified this, was = -15, now -= 15
649                 for (i = 0;i < 3;i++)
650                 {
651                         clip.mins2[i] -= 15;
652                         clip.maxs2[i] += 15;
653                 }
654         }
655
656         // get adjusted box for bmodel collisions if the world is q1bsp or hlbsp
657         if (sv.worldmodel && sv.worldmodel->brush.RoundUpToHullSize)
658                 sv.worldmodel->brush.RoundUpToHullSize(sv.worldmodel, clip.mins, clip.maxs, hullmins, hullmaxs);
659         else
660         {
661                 VectorCopy(clip.mins, hullmins);
662                 VectorCopy(clip.maxs, hullmaxs);
663         }
664
665         // create the bounding box of the entire move
666         for (i = 0;i < 3;i++)
667         {
668                 clip.boxmins[i] = min(clip.start[i], clip.trace.endpos[i]) + min(hullmins[i], clip.mins2[i]) - 1;
669                 clip.boxmaxs[i] = max(clip.start[i], clip.trace.endpos[i]) + max(hullmaxs[i], clip.maxs2[i]) + 1;
670         }
671
672         // debug override to test against everything
673         if (sv_debugmove.integer)
674         {
675                 clip.boxmins[0] = clip.boxmins[1] = clip.boxmins[2] = -999999999;
676                 clip.boxmaxs[0] = clip.boxmaxs[1] = clip.boxmaxs[2] =  999999999;
677         }
678
679         // clip to enttiies
680         sv_areagrid_stats_calls++;
681         sv_areagrid_marknumber++;
682         igridmins[0] = (int) ((clip.boxmins[0] + sv_areagrid_bias[0]) * sv_areagrid_scale[0]);
683         igridmins[1] = (int) ((clip.boxmins[1] + sv_areagrid_bias[1]) * sv_areagrid_scale[1]);
684         //igridmins[2] = (int) ((clip->boxmins[2] + sv_areagrid_bias[2]) * sv_areagrid_scale[2]);
685         igridmaxs[0] = (int) ((clip.boxmaxs[0] + sv_areagrid_bias[0]) * sv_areagrid_scale[0]) + 1;
686         igridmaxs[1] = (int) ((clip.boxmaxs[1] + sv_areagrid_bias[1]) * sv_areagrid_scale[1]) + 1;
687         //igridmaxs[2] = (int) ((clip->boxmaxs[2] + sv_areagrid_bias[2]) * sv_areagrid_scale[2]) + 1;
688         igridmins[0] = max(0, igridmins[0]);
689         igridmins[1] = max(0, igridmins[1]);
690         //igridmins[2] = max(0, igridmins[2]);
691         igridmaxs[0] = min(AREA_GRID, igridmaxs[0]);
692         igridmaxs[1] = min(AREA_GRID, igridmaxs[1]);
693         //igridmaxs[2] = min(AREA_GRID, igridmaxs[2]);
694
695         if (sv_areagrid_outside.solid_edicts.next != &sv_areagrid_outside.solid_edicts)
696                 SV_ClipToNode(&clip, &sv_areagrid_outside.solid_edicts);
697
698         for (igrid[1] = igridmins[1];igrid[1] < igridmaxs[1];igrid[1]++)
699                 for (grid = sv_areagrid + igrid[1] * AREA_GRID + igridmins[0], igrid[0] = igridmins[0];igrid[0] < igridmaxs[0];igrid[0]++, grid++)
700                         if (grid->solid_edicts.next != &grid->solid_edicts)
701                                 SV_ClipToNode(&clip, &grid->solid_edicts);
702
703         return clip.trace;
704 }
705
706 #if COLLISIONPARANOID >= 1
707 trace_t SV_Move(const vec3_t start, const vec3_t mins, const vec3_t maxs, const vec3_t end, int type, edict_t *passedict)
708 {
709         int endstuck;
710         trace_t trace;
711         vec3_t temp;
712         trace = SV_Move_(start, mins, maxs, end, type, passedict);
713         if (passedict)
714         {
715                 VectorCopy(trace.endpos, temp);
716                 endstuck = SV_Move_(temp, mins, maxs, temp, type, passedict).startsolid;
717 #if COLLISIONPARANOID < 3
718                 if (trace.startsolid || endstuck)
719 #endif
720                         Con_Printf("%s{e%i:%f %f %f:%f %f %f:%f:%f %f %f%s%s}\n", (trace.startsolid || endstuck) ? "\002" : "", passedict ? passedict - sv.edicts : -1, passedict->v->origin[0], passedict->v->origin[1], passedict->v->origin[2], end[0] - passedict->v->origin[0], end[1] - passedict->v->origin[1], end[2] - passedict->v->origin[2], trace.fraction, trace.endpos[0] - passedict->v->origin[0], trace.endpos[1] - passedict->v->origin[1], trace.endpos[2] - passedict->v->origin[2], trace.startsolid ? " startstuck" : "", endstuck ? " endstuck" : "");
721         }
722         return trace;
723 }
724 #endif
725
726 int SV_PointSuperContents(const vec3_t point)
727 {
728         return SV_Move(point, vec3_origin, vec3_origin, point, MOVE_NOMONSTERS, NULL).startsupercontents;
729 }
730
731 int SV_PointQ1Contents(const vec3_t point)
732 {
733         return Mod_Q1BSP_NativeContentsFromSuperContents(NULL, SV_PointSuperContents(point));
734 }
735
736