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