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, *next;
 194         edict_t *touch;
 195         areagrid_t *grid;
 196         int old_self, old_other, igrid[3], igridmins[3], igridmaxs[3];
 197
 198         sv_areagrid_marknumber++;
 199         igridmins[0] = (int) ((ent->v->absmin[0] + sv_areagrid_bias[0]) * sv_areagrid_scale[0]);
 200         igridmins[1] = (int) ((ent->v->absmin[1] + sv_areagrid_bias[1]) * sv_areagrid_scale[1]);
 201         //igridmins[2] = (int) ((ent->v->absmin[2] + sv_areagrid_bias[2]) * sv_areagrid_scale[2]);
 202         igridmaxs[0] = (int) ((ent->v->absmax[0] + sv_areagrid_bias[0]) * sv_areagrid_scale[0]) + 1;
 203         igridmaxs[1] = (int) ((ent->v->absmax[1] + sv_areagrid_bias[1]) * sv_areagrid_scale[1]) + 1;
 204         //igridmaxs[2] = (int) ((ent->v->absmax[2] + sv_areagrid_bias[2]) * sv_areagrid_scale[2]) + 1;
 205         igridmins[0] = max(0, igridmins[0]);
 206         igridmins[1] = max(0, igridmins[1]);
 207         //igridmins[2] = max(0, igridmins[2]);
 208         igridmaxs[0] = min(AREA_GRID, igridmaxs[0]);
 209         igridmaxs[1] = min(AREA_GRID, igridmaxs[1]);
 210         //igridmaxs[2] = min(AREA_GRID, igridmaxs[2]);
 211
 212         for (l = sv_areagrid_outside.trigger_edicts.next;l != &sv_areagrid_outside.trigger_edicts;l = next)
 213         {
 214                 next = l->next;
 215                 touch = EDICT_NUM(l->entitynumber);
 216                 if (ent->v->absmin[0] > touch->v->absmax[0]
 217                  || ent->v->absmax[0] < touch->v->absmin[0]
 218                  || ent->v->absmin[1] > touch->v->absmax[1]
 219                  || ent->v->absmax[1] < touch->v->absmin[1]
 220                  || ent->v->absmin[2] > touch->v->absmax[2]
 221                  || ent->v->absmax[2] < touch->v->absmin[2])
 222                         continue;
 223                 if (touch == ent)
 224                         continue;
 225                 if (!touch->v->touch || touch->v->solid != SOLID_TRIGGER)
 226                         continue;
 227                 old_self = pr_global_struct->self;
 228                 old_other = pr_global_struct->other;
 229
 230                 pr_global_struct->self = EDICT_TO_PROG(touch);
 231                 pr_global_struct->other = EDICT_TO_PROG(ent);
 232                 pr_global_struct->time = sv.time;
 233                 PR_ExecuteProgram (touch->v->touch, "");
 234
 235                 pr_global_struct->self = old_self;
 236                 pr_global_struct->other = old_other;
 237         }
 238
 239         for (igrid[1] = igridmins[1];igrid[1] < igridmaxs[1];igrid[1]++)
 240         {
 241                 grid = sv_areagrid + igrid[1] * AREA_GRID + igridmins[0];
 242                 for (igrid[0] = igridmins[0];igrid[0] < igridmaxs[0];igrid[0]++, grid++)
 243                 {
 244                         for (l = grid->trigger_edicts.next;l != &grid->trigger_edicts;l = next)
 245                         {
 246                                 next = l->next;
 247                                 touch = EDICT_NUM(l->entitynumber);
 248                                 if (touch->e->areagridmarknumber == sv_areagrid_marknumber)
 249                                         continue;
 250                                 touch->e->areagridmarknumber = sv_areagrid_marknumber;
 251                                 if (ent->v->absmin[0] > touch->v->absmax[0]
 252                                  || ent->v->absmax[0] < touch->v->absmin[0]
 253                                  || ent->v->absmin[1] > touch->v->absmax[1]
 254                                  || ent->v->absmax[1] < touch->v->absmin[1]
 255                                  || ent->v->absmin[2] > touch->v->absmax[2]
 256                                  || ent->v->absmax[2] < touch->v->absmin[2])
 257                                         continue;
 258                                 // LordHavoc: id bug that won't be fixed: triggers do not ignore their owner like solid objects do
 259                                 if (touch == ent)
 260                                         continue;
 261                                 if (!touch->v->touch || touch->v->solid != SOLID_TRIGGER)
 262                                         continue;
 263                                 old_self = pr_global_struct->self;
 264                                 old_other = pr_global_struct->other;
 265
 266                                 pr_global_struct->self = EDICT_TO_PROG(touch);
 267                                 pr_global_struct->other = EDICT_TO_PROG(ent);
 268                                 pr_global_struct->time = sv.time;
 269                                 PR_ExecuteProgram (touch->v->touch, "");
 270
 271                                 pr_global_struct->self = old_self;
 272                                 pr_global_struct->other = old_other;
 273                         }
 274                 }
 275         }
 276 }
 277
 278 void SV_LinkEdict_AreaGrid(edict_t *ent)
 279 {
 280         areagrid_t *grid;
 281         int igrid[3], igridmins[3], igridmaxs[3], gridnum, entitynumber = NUM_FOR_EDICT(ent);
 282
 283         if (entitynumber <= 0 || entitynumber >= sv.max_edicts || EDICT_NUM(entitynumber) != ent)
 284                 Host_Error("SV_LinkEdict_AreaGrid: invalid edict %p (sv.edicts is %p, edict compared to sv.edicts is %i)\n", ent, sv.edicts, entitynumber);
 285
 286         igridmins[0] = (int) ((ent->v->absmin[0] + sv_areagrid_bias[0]) * sv_areagrid_scale[0]);
 287         igridmins[1] = (int) ((ent->v->absmin[1] + sv_areagrid_bias[1]) * sv_areagrid_scale[1]);
 288         //igridmins[2] = (int) ((ent->v->absmin[2] + sv_areagrid_bias[2]) * sv_areagrid_scale[2]);
 289         igridmaxs[0] = (int) ((ent->v->absmax[0] + sv_areagrid_bias[0]) * sv_areagrid_scale[0]) + 1;
 290         igridmaxs[1] = (int) ((ent->v->absmax[1] + sv_areagrid_bias[1]) * sv_areagrid_scale[1]) + 1;
 291         //igridmaxs[2] = (int) ((ent->v->absmax[2] + sv_areagrid_bias[2]) * sv_areagrid_scale[2]) + 1;
 292         if (igridmins[0] < 0 || igridmaxs[0] > AREA_GRID || igridmins[1] < 0 || igridmaxs[1] > AREA_GRID || ((igridmaxs[0] - igridmins[0]) * (igridmaxs[1] - igridmins[1])) > ENTITYGRIDAREAS)
 293         {
 294                 // wow, something outside the grid, store it as such
 295                 if (ent->v->solid == SOLID_TRIGGER)
 296                         InsertLinkBefore (&ent->e->areagrid[0], &sv_areagrid_outside.trigger_edicts, entitynumber);
 297                 else
 298                         InsertLinkBefore (&ent->e->areagrid[0], &sv_areagrid_outside.solid_edicts, entitynumber);
 299                 return;
 300         }
 301
 302         gridnum = 0;
 303         for (igrid[1] = igridmins[1];igrid[1] < igridmaxs[1];igrid[1]++)
 304         {
 305                 grid = sv_areagrid + igrid[1] * AREA_GRID + igridmins[0];
 306                 for (igrid[0] = igridmins[0];igrid[0] < igridmaxs[0];igrid[0]++, grid++, gridnum++)
 307                 {
 308                         if (ent->v->solid == SOLID_TRIGGER)
 309                                 InsertLinkBefore (&ent->e->areagrid[gridnum], &grid->trigger_edicts, entitynumber);
 310                         else
 311                                 InsertLinkBefore (&ent->e->areagrid[gridnum], &grid->solid_edicts, entitynumber);
 312                 }
 313         }
 314 }
 315
 316 /*
 317 ===============
 318 SV_LinkEdict
 319
 320 ===============
 321 */
 322 void SV_LinkEdict (edict_t *ent, qboolean touch_triggers)
 323 {
 324         model_t *model;
 325
 326         if (ent->e->areagrid[0].prev)
 327                 SV_UnlinkEdict (ent);   // unlink from old position
 328
 329         if (ent == sv.edicts)
 330                 return;         // don't add the world
 331
 332         if (ent->e->free)
 333                 return;
 334
 335 // set the abs box
 336
 337         if (ent->v->solid == SOLID_BSP)
 338         {
 339                 if (ent->v->modelindex < 0 || ent->v->modelindex > MAX_MODELS)
 340                         Host_Error("SOLID_BSP with invalid modelindex!\n");
 341                 model = sv.models[(int) ent->v->modelindex];
 342                 if (model != NULL)
 343                 {
 344                         Mod_CheckLoaded(model);
 345                         if (!model->TraceBox)
 346                                 Host_Error("SOLID_BSP with non-collidable model\n");
 347
 348                         if (ent->v->angles[0] || ent->v->angles[2] || ent->v->avelocity[0] || ent->v->avelocity[2])
 349                         {
 350                                 VectorAdd(ent->v->origin, model->rotatedmins, ent->v->absmin);
 351                                 VectorAdd(ent->v->origin, model->rotatedmaxs, ent->v->absmax);
 352                         }
 353                         else if (ent->v->angles[1] || ent->v->avelocity[1])
 354                         {
 355                                 VectorAdd(ent->v->origin, model->yawmins, ent->v->absmin);
 356                                 VectorAdd(ent->v->origin, model->yawmaxs, ent->v->absmax);
 357                         }
 358                         else
 359                         {
 360                                 VectorAdd(ent->v->origin, model->normalmins, ent->v->absmin);
 361                                 VectorAdd(ent->v->origin, model->normalmaxs, ent->v->absmax);
 362                         }
 363                 }
 364                 else
 365                 {
 366                         // SOLID_BSP with no model is valid, mainly because some QC setup code does so temporarily
 367                         VectorAdd(ent->v->origin, ent->v->mins, ent->v->absmin);
 368                         VectorAdd(ent->v->origin, ent->v->maxs, ent->v->absmax);
 369                 }
 370         }
 371         else
 372         {
 373                 VectorAdd(ent->v->origin, ent->v->mins, ent->v->absmin);
 374                 VectorAdd(ent->v->origin, ent->v->maxs, ent->v->absmax);
 375         }
 376
 377 //
 378 // to make items easier to pick up and allow them to be grabbed off
 379 // of shelves, the abs sizes are expanded
 380 //
 381         if ((int)ent->v->flags & FL_ITEM)
 382         {
 383                 ent->v->absmin[0] -= 15;
 384                 ent->v->absmin[1] -= 15;
 385                 ent->v->absmin[2] -= 1;
 386                 ent->v->absmax[0] += 15;
 387                 ent->v->absmax[1] += 15;
 388                 ent->v->absmax[2] += 1;
 389         }
 390         else
 391         {
 392                 // because movement is clipped an epsilon away from an actual edge,
 393                 // we must fully check even when bounding boxes don't quite touch
 394                 ent->v->absmin[0] -= 1;
 395                 ent->v->absmin[1] -= 1;
 396                 ent->v->absmin[2] -= 1;
 397                 ent->v->absmax[0] += 1;
 398                 ent->v->absmax[1] += 1;
 399                 ent->v->absmax[2] += 1;
 400         }
 401
 402         if (ent->v->solid == SOLID_NOT)
 403                 return;
 404
 405         SV_LinkEdict_AreaGrid(ent);
 406
 407 // if touch_triggers, touch all entities at this node and descend for more
 408         if (touch_triggers)
 409                 SV_TouchAreaGrid(ent);
 410 }
 411
 412
 413
 414 /*
 415 ===============================================================================
 416
 417 POINT TESTING IN HULLS
 418
 419 ===============================================================================
 420 */
 421
 422 /*
 423 ============
 424 SV_TestEntityPosition
 425
 426 This could be a lot more efficient...
 427 ============
 428 */
 429 int SV_TestEntityPosition (edict_t *ent)
 430 {
 431         return SV_Move (ent->v->origin, ent->v->mins, ent->v->maxs, ent->v->origin, MOVE_NORMAL, ent).startsolid;
 432 }
 433
 434
 435 /*
 436 ===============================================================================
 437
 438 LINE TESTING IN HULLS
 439
 440 ===============================================================================
 441 */
 442
 443 /*
 444 ==================
 445 SV_ClipMoveToEntity
 446
 447 Handles selection or creation of a clipping hull, and offseting (and
 448 eventually rotation) of the end points
 449 ==================
 450 */
 451 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)
 452 {
 453         int i;
 454         trace_t trace;
 455         model_t *model = NULL;
 456         matrix4x4_t matrix, imatrix;
 457         float tempnormal[3], starttransformed[3], endtransformed[3];
 458         float starttransformedmins[3], starttransformedmaxs[3], endtransformedmins[3], endtransformedmaxs[3];
 459
 460         if ((int) ent->v->solid == SOLID_BSP || movetype == MOVE_HITMODEL)
 461         {
 462                 i = ent->v->modelindex;
 463                 if ((unsigned int) i >= MAX_MODELS)
 464                         Host_Error("SV_ClipMoveToEntity: invalid modelindex\n");
 465                 model = sv.models[i];
 466                 if (i != 0 && model == NULL)
 467                         Host_Error("SV_ClipMoveToEntity: invalid modelindex\n");
 468
 469                 Mod_CheckLoaded(model);
 470                 if ((int) ent->v->solid == SOLID_BSP)
 471                 {
 472                         if (!model->TraceBox)
 473                         {
 474                                 Con_Printf("SV_ClipMoveToEntity: SOLID_BSP with a non-collidable model, entity dump:\n");
 475                                 ED_Print(ent);
 476                                 Host_Error("SV_ClipMoveToEntity: SOLID_BSP with a non-collidable model\n");
 477                         }
 478                         if (ent->v->movetype != MOVETYPE_PUSH)
 479                                 Host_Error("SV_ClipMoveToEntity: SOLID_BSP without MOVETYPE_PUSH");
 480                 }
 481         }
 482
 483         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);
 484         Matrix4x4_Invert_Simple(&imatrix, &matrix);
 485         Matrix4x4_Transform(&imatrix, start, starttransformed);
 486         Matrix4x4_Transform(&imatrix, end, endtransformed);
 487
 488         if (model && model->TraceBox)
 489         {
 490                 int frame;
 491                 frame = (int)ent->v->frame;
 492                 frame = bound(0, frame, (model->numframes - 1));
 493                 VectorAdd(starttransformed, maxs, starttransformedmaxs);
 494                 VectorAdd(endtransformed, maxs, endtransformedmaxs);
 495                 VectorAdd(starttransformed, mins, starttransformedmins);
 496                 VectorAdd(endtransformed, mins, endtransformedmins);
 497                 model->TraceBox(model, frame, &trace, starttransformedmins, starttransformedmaxs, endtransformedmins, endtransformedmaxs, SUPERCONTENTS_SOLID);
 498         }
 499         else
 500                 Collision_ClipTrace_Box(&trace, ent->v->mins, ent->v->maxs, starttransformed, mins, maxs, endtransformed, SUPERCONTENTS_SOLID, SUPERCONTENTS_SOLID);
 501
 502         if (trace.fraction < 1 || trace.startsolid)
 503         {
 504                 trace.ent = ent;
 505                 VectorLerp(start, trace.fraction, end, trace.endpos);
 506                 VectorCopy(trace.plane.normal, tempnormal);
 507                 Matrix4x4_Transform3x3(&matrix, tempnormal, trace.plane.normal);
 508                 // FIXME: should recalc trace.plane.dist
 509         }
 510         else
 511                 VectorCopy(end, trace.endpos);
 512
 513         return trace;
 514 }
 515
 516 //===========================================================================
 517
 518 void SV_ClipToNode(moveclip_t *clip, link_t *list)
 519 {
 520         link_t *l, *next;
 521         edict_t *touch;
 522         trace_t trace;
 523
 524         sv_areagrid_stats_nodechecks++;
 525         for (l = list->next;l != list;l = next)
 526         {
 527                 next = l->next;
 528                 touch = EDICT_NUM(l->entitynumber);
 529                 if (touch->e->areagridmarknumber == sv_areagrid_marknumber)
 530                         continue;
 531                 touch->e->areagridmarknumber = sv_areagrid_marknumber;
 532                 sv_areagrid_stats_entitychecks++;
 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                 if (clip->type == MOVE_NOMONSTERS && touch->v->solid != SOLID_BSP)
 543                         continue;
 544
 545                 if (touch->v->solid == SOLID_NOT)
 546                         continue;
 547
 548                 if (clip->passedict)
 549                 {
 550                         if (!clip->passedict->v->size[0] && !touch->v->size[0])
 551                                 continue;       // points never interact
 552                         if (PROG_TO_EDICT(touch->v->owner) == clip->passedict)
 553                                 continue;       // don't clip against own missiles
 554                         if (PROG_TO_EDICT(clip->passedict->v->owner) == touch)
 555                                 continue;       // don't clip against owner
 556                         // LordHavoc: corpse code
 557                         if (clip->passedict->v->solid == SOLID_CORPSE && (touch->v->solid == SOLID_SLIDEBOX || touch->v->solid == SOLID_CORPSE))
 558                                 continue;
 559                         if (clip->passedict->v->solid == SOLID_SLIDEBOX && touch->v->solid == SOLID_CORPSE)
 560                                 continue;
 561                 }
 562
 563                 if (touch == clip->passedict)
 564                         continue;
 565                 if (touch->v->solid == SOLID_TRIGGER)
 566                 {
 567                         ED_Print(touch);
 568                         Host_Error ("Trigger in clipping list");
 569                 }
 570
 571                 // might interact, so do an exact clip
 572                 if (touch->v->solid == SOLID_BSP)
 573                         trace = SV_ClipMoveToEntity(touch, clip->start, clip->mins, clip->maxs, clip->end, clip->type);
 574                 else if ((int)touch->v->flags & FL_MONSTER)
 575                         trace = SV_ClipMoveToEntity(touch, clip->start, clip->mins2, clip->maxs2, clip->end, clip->type);
 576                 else
 577                         trace = SV_ClipMoveToEntity(touch, clip->start, clip->mins, clip->maxs, clip->end, clip->type);
 578                 // LordHavoc: take the 'best' answers from the new trace and combine with existing data
 579                 if (trace.allsolid)
 580                         clip->trace.allsolid = true;
 581                 if (trace.startsolid)
 582                 {
 583                         clip->trace.startsolid = true;
 584                         //if (!clip->trace.ent)
 585                         //      clip->trace.ent = trace.ent;
 586                 }
 587                 if (trace.inopen)
 588                         clip->trace.inopen = true;
 589                 if (trace.inwater)
 590                         clip->trace.inwater = true;
 591                 if (trace.fraction < clip->trace.fraction)
 592                 {
 593                         clip->trace.fraction = trace.fraction;
 594                         VectorCopy(trace.endpos, clip->trace.endpos);
 595                         clip->trace.plane = trace.plane;
 596                         clip->trace.ent = touch;
 597                 }
 598                 clip->trace.startsupercontents |= trace.startsupercontents;
 599                 //if (clip->trace.allsolid)
 600                 //      return;
 601         }
 602 }
 603
 604 /*
 605 ==================
 606 SV_Move
 607 ==================
 608 */
 609 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)
 610 {
 611         moveclip_t clip;
 612         vec3_t hullmins, hullmaxs;
 613         areagrid_t *grid;
 614         int i, igrid[3], igridmins[3], igridmaxs[3];
 615
 616         memset(&clip, 0, sizeof(moveclip_t));
 617
 618         VectorCopy(start, clip.start);
 619         VectorCopy(end, clip.end);
 620         VectorCopy(mins, clip.mins);
 621         VectorCopy(maxs, clip.maxs);
 622         VectorCopy(mins, clip.mins2);
 623         VectorCopy(maxs, clip.maxs2);
 624         clip.type = type;
 625         clip.passedict = passedict;
 626
 627         // clip to world
 628         clip.trace = SV_ClipMoveToEntity(sv.edicts, clip.start, clip.mins, clip.maxs, clip.end, clip.type);
 629         if (clip.type == MOVE_WORLDONLY)
 630         //if (clip.trace.allsolid)
 631                 return clip.trace;
 632
 633         if (clip.type == MOVE_MISSILE)
 634         {
 635                 // LordHavoc: modified this, was = -15, now -= 15
 636                 for (i = 0;i < 3;i++)
 637                 {
 638                         clip.mins2[i] -= 15;
 639                         clip.maxs2[i] += 15;
 640                 }
 641         }
 642
 643         // get adjusted box for bmodel collisions if the world is q1bsp or hlbsp
 644         if (sv.worldmodel && sv.worldmodel->brush.RoundUpToHullSize)
 645                 sv.worldmodel->brush.RoundUpToHullSize(sv.worldmodel, clip.mins, clip.maxs, hullmins, hullmaxs);
 646         else
 647         {
 648                 VectorCopy(clip.mins, hullmins);
 649                 VectorCopy(clip.maxs, hullmaxs);
 650         }
 651
 652         // create the bounding box of the entire move
 653         for (i = 0;i < 3;i++)
 654         {
 655                 clip.boxmins[i] = min(clip.start[i], clip.trace.endpos[i]) + min(hullmins[i], clip.mins2[i]) - 1;
 656                 clip.boxmaxs[i] = max(clip.start[i], clip.trace.endpos[i]) + max(hullmaxs[i], clip.maxs2[i]) + 1;
 657         }
 658
 659         // debug override to test against everything
 660         if (sv_debugmove.integer)
 661         {
 662                 clip.boxmins[0] = clip.boxmins[1] = clip.boxmins[2] = -999999999;
 663                 clip.boxmaxs[0] = clip.boxmaxs[1] = clip.boxmaxs[2] =  999999999;
 664         }
 665
 666         // clip to enttiies
 667         sv_areagrid_stats_calls++;
 668         sv_areagrid_marknumber++;
 669         igridmins[0] = (int) ((clip.boxmins[0] + sv_areagrid_bias[0]) * sv_areagrid_scale[0]);
 670         igridmins[1] = (int) ((clip.boxmins[1] + sv_areagrid_bias[1]) * sv_areagrid_scale[1]);
 671         //igridmins[2] = (int) ((clip->boxmins[2] + sv_areagrid_bias[2]) * sv_areagrid_scale[2]);
 672         igridmaxs[0] = (int) ((clip.boxmaxs[0] + sv_areagrid_bias[0]) * sv_areagrid_scale[0]) + 1;
 673         igridmaxs[1] = (int) ((clip.boxmaxs[1] + sv_areagrid_bias[1]) * sv_areagrid_scale[1]) + 1;
 674         //igridmaxs[2] = (int) ((clip->boxmaxs[2] + sv_areagrid_bias[2]) * sv_areagrid_scale[2]) + 1;
 675         igridmins[0] = max(0, igridmins[0]);
 676         igridmins[1] = max(0, igridmins[1]);
 677         //igridmins[2] = max(0, igridmins[2]);
 678         igridmaxs[0] = min(AREA_GRID, igridmaxs[0]);
 679         igridmaxs[1] = min(AREA_GRID, igridmaxs[1]);
 680         //igridmaxs[2] = min(AREA_GRID, igridmaxs[2]);
 681
 682         if (sv_areagrid_outside.solid_edicts.next != &sv_areagrid_outside.solid_edicts)
 683                 SV_ClipToNode(&clip, &sv_areagrid_outside.solid_edicts);
 684
 685         for (igrid[1] = igridmins[1];igrid[1] < igridmaxs[1];igrid[1]++)
 686                 for (grid = sv_areagrid + igrid[1] * AREA_GRID + igridmins[0], igrid[0] = igridmins[0];igrid[0] < igridmaxs[0];igrid[0]++, grid++)
 687                         if (grid->solid_edicts.next != &grid->solid_edicts)
 688                                 SV_ClipToNode(&clip, &grid->solid_edicts);
 689
 690         return clip.trace;
 691 }
 692
 693 int SV_PointSuperContents(const vec3_t point)
 694 {
 695         return SV_Move(point, vec3_origin, vec3_origin, point, MOVE_NOMONSTERS, NULL).startsupercontents;
 696 }
 697
 698 int SV_PointQ1Contents(const vec3_t point)
 699 {
 700         return Mod_Q1BSP_NativeContentsFromSuperContents(NULL, SV_PointSuperContents(point));
 701 }
 702
 703