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_polygoncollisions = {CVAR_NOTIFY, "sv_polygoncollisions", "0"};
  34 cvar_t sv_areagrid_mingridsize = {CVAR_NOTIFY, "sv_areagrid_mingridsize", "64"};
  35
  36 void SV_AreaStats_f(void);
  37
  38 void SV_World_Init(void)
  39 {
  40         Cvar_RegisterVariable(&sv_debugmove);
  41         Cvar_RegisterVariable(&sv_polygoncollisions);
  42         Cvar_RegisterVariable(&sv_areagrid_mingridsize);
  43         Cmd_AddCommand("sv_areastats", SV_AreaStats_f);
  44         Collision_Init();
  45 }
  46
  47 typedef struct
  48 {
  49         // bounding box of entire move area
  50         vec3_t boxmins, boxmaxs;
  51
  52         // size of the moving object
  53         vec3_t mins, maxs;
  54
  55         // size when clipping against monsters
  56         vec3_t mins2, maxs2;
  57
  58         // size when clipping against brush models
  59         vec3_t hullmins, hullmaxs;
  60
  61         // start and end origin of move
  62         vec3_t start, end;
  63
  64         // trace results
  65         trace_t trace;
  66
  67         // type of move (like ignoring monsters, or similar)
  68         int type;
  69
  70         // the edict that is moving (if any)
  71         edict_t *passedict;
  72 }
  73 moveclip_t;
  74
  75 //============================================================================
  76
  77 // ClearLink is used for new headnodes
  78 static void ClearLink (link_t *l)
  79 {
  80         l->entitynumber = 0;
  81         l->prev = l->next = l;
  82 }
  83
  84 static void RemoveLink (link_t *l)
  85 {
  86         l->next->prev = l->prev;
  87         l->prev->next = l->next;
  88 }
  89
  90 static void InsertLinkBefore (link_t *l, link_t *before, int entitynumber)
  91 {
  92         l->entitynumber = entitynumber;
  93         l->next = before;
  94         l->prev = before->prev;
  95         l->prev->next = l;
  96         l->next->prev = l;
  97 }
  98
  99
 100 /*
 101 ===============================================================================
 102
 103 ENTITY AREA CHECKING
 104
 105 ===============================================================================
 106 */
 107
 108 int sv_areagrid_stats_calls = 0;
 109 int sv_areagrid_stats_nodechecks = 0;
 110 int sv_areagrid_stats_entitychecks = 0;
 111
 112 void SV_AreaStats_f(void)
 113 {
 114         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);
 115         sv_areagrid_stats_calls = 0;
 116         sv_areagrid_stats_nodechecks = 0;
 117         sv_areagrid_stats_entitychecks = 0;
 118 }
 119
 120 typedef struct areagrid_s
 121 {
 122         link_t trigger_edicts;
 123         link_t solid_edicts;
 124 }
 125 areagrid_t;
 126
 127 #define AREA_GRID 512
 128 #define AREA_GRIDNODES (AREA_GRID * AREA_GRID)
 129
 130 static areagrid_t sv_areagrid[AREA_GRIDNODES], sv_areagrid_outside;
 131 static vec3_t sv_areagrid_bias, sv_areagrid_scale, sv_areagrid_mins, sv_areagrid_maxs, sv_areagrid_size;
 132 static int sv_areagrid_marknumber = 1;
 133
 134 void SV_CreateAreaGrid (vec3_t mins, vec3_t maxs)
 135 {
 136         int i;
 137         ClearLink (&sv_areagrid_outside.trigger_edicts);
 138         ClearLink (&sv_areagrid_outside.solid_edicts);
 139         // choose either the world box size, or a larger box to ensure the grid isn't too fine
 140         sv_areagrid_size[0] = max(maxs[0] - mins[0], AREA_GRID * sv_areagrid_mingridsize.value);
 141         sv_areagrid_size[1] = max(maxs[1] - mins[1], AREA_GRID * sv_areagrid_mingridsize.value);
 142         sv_areagrid_size[2] = max(maxs[2] - mins[2], AREA_GRID * sv_areagrid_mingridsize.value);
 143         // figure out the corners of such a box, centered at the center of the world box
 144         sv_areagrid_mins[0] = (mins[0] + maxs[0] - sv_areagrid_size[0]) * 0.5f;
 145         sv_areagrid_mins[1] = (mins[1] + maxs[1] - sv_areagrid_size[1]) * 0.5f;
 146         sv_areagrid_mins[2] = (mins[2] + maxs[2] - sv_areagrid_size[2]) * 0.5f;
 147         sv_areagrid_maxs[0] = (mins[0] + maxs[0] + sv_areagrid_size[0]) * 0.5f;
 148         sv_areagrid_maxs[1] = (mins[1] + maxs[1] + sv_areagrid_size[1]) * 0.5f;
 149         sv_areagrid_maxs[2] = (mins[2] + maxs[2] + sv_areagrid_size[2]) * 0.5f;
 150         // now calculate the actual useful info from that
 151         VectorNegate(sv_areagrid_mins, sv_areagrid_bias);
 152         sv_areagrid_scale[0] = AREA_GRID / sv_areagrid_size[0];
 153         sv_areagrid_scale[1] = AREA_GRID / sv_areagrid_size[1];
 154         sv_areagrid_scale[2] = AREA_GRID / sv_areagrid_size[2];
 155         for (i = 0;i < AREA_GRIDNODES;i++)
 156         {
 157                 ClearLink (&sv_areagrid[i].trigger_edicts);
 158                 ClearLink (&sv_areagrid[i].solid_edicts);
 159         }
 160         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);
 161 }
 162
 163 /*
 164 ===============
 165 SV_ClearWorld
 166
 167 ===============
 168 */
 169 void SV_ClearWorld (void)
 170 {
 171         Mod_CheckLoaded(sv.worldmodel);
 172         SV_CreateAreaGrid(sv.worldmodel->normalmins, sv.worldmodel->normalmaxs);
 173 }
 174
 175
 176 /*
 177 ===============
 178 SV_UnlinkEdict
 179
 180 ===============
 181 */
 182 void SV_UnlinkEdict (edict_t *ent)
 183 {
 184         int i;
 185         for (i = 0;i < ENTITYGRIDAREAS;i++)
 186         {
 187                 if (ent->e->areagrid[i].prev)
 188                 {
 189                         RemoveLink (&ent->e->areagrid[i]);
 190                         ent->e->areagrid[i].prev = ent->e->areagrid[i].next = NULL;
 191                 }
 192         }
 193 }
 194
 195
 196 void SV_TouchAreaGrid(edict_t *ent)
 197 {
 198         link_t *l, *next;
 199         edict_t *touch;
 200         areagrid_t *grid;
 201         int old_self, old_other, igrid[3], igridmins[3], igridmaxs[3];
 202
 203         sv_areagrid_marknumber++;
 204         igridmins[0] = (int) ((ent->v->absmin[0] + sv_areagrid_bias[0]) * sv_areagrid_scale[0]);
 205         igridmins[1] = (int) ((ent->v->absmin[1] + sv_areagrid_bias[1]) * sv_areagrid_scale[1]);
 206         //igridmins[2] = (int) ((ent->v->absmin[2] + sv_areagrid_bias[2]) * sv_areagrid_scale[2]);
 207         igridmaxs[0] = (int) ((ent->v->absmax[0] + sv_areagrid_bias[0]) * sv_areagrid_scale[0]) + 1;
 208         igridmaxs[1] = (int) ((ent->v->absmax[1] + sv_areagrid_bias[1]) * sv_areagrid_scale[1]) + 1;
 209         //igridmaxs[2] = (int) ((ent->v->absmax[2] + sv_areagrid_bias[2]) * sv_areagrid_scale[2]) + 1;
 210         igridmins[0] = max(0, igridmins[0]);
 211         igridmins[1] = max(0, igridmins[1]);
 212         //igridmins[2] = max(0, igridmins[2]);
 213         igridmaxs[0] = min(AREA_GRID, igridmaxs[0]);
 214         igridmaxs[1] = min(AREA_GRID, igridmaxs[1]);
 215         //igridmaxs[2] = min(AREA_GRID, igridmaxs[2]);
 216
 217         for (l = sv_areagrid_outside.trigger_edicts.next;l != &sv_areagrid_outside.trigger_edicts;l = next)
 218         {
 219                 next = l->next;
 220                 touch = EDICT_NUM(l->entitynumber);
 221                 if (ent->v->absmin[0] > touch->v->absmax[0]
 222                  || ent->v->absmax[0] < touch->v->absmin[0]
 223                  || ent->v->absmin[1] > touch->v->absmax[1]
 224                  || ent->v->absmax[1] < touch->v->absmin[1]
 225                  || ent->v->absmin[2] > touch->v->absmax[2]
 226                  || ent->v->absmax[2] < touch->v->absmin[2])
 227                         continue;
 228                 if (touch == ent)
 229                         continue;
 230                 if (!touch->v->touch || touch->v->solid != SOLID_TRIGGER)
 231                         continue;
 232                 old_self = pr_global_struct->self;
 233                 old_other = pr_global_struct->other;
 234
 235                 pr_global_struct->self = EDICT_TO_PROG(touch);
 236                 pr_global_struct->other = EDICT_TO_PROG(ent);
 237                 pr_global_struct->time = sv.time;
 238                 PR_ExecuteProgram (touch->v->touch, "");
 239
 240                 pr_global_struct->self = old_self;
 241                 pr_global_struct->other = old_other;
 242         }
 243
 244         for (igrid[1] = igridmins[1];igrid[1] < igridmaxs[1];igrid[1]++)
 245         {
 246                 grid = sv_areagrid + igrid[1] * AREA_GRID + igridmins[0];
 247                 for (igrid[0] = igridmins[0];igrid[0] < igridmaxs[0];igrid[0]++, grid++)
 248                 {
 249                         for (l = grid->trigger_edicts.next;l != &grid->trigger_edicts;l = next)
 250                         {
 251                                 next = l->next;
 252                                 touch = EDICT_NUM(l->entitynumber);
 253                                 if (touch->e->areagridmarknumber == sv_areagrid_marknumber)
 254                                         continue;
 255                                 touch->e->areagridmarknumber = sv_areagrid_marknumber;
 256                                 if (ent->v->absmin[0] > touch->v->absmax[0]
 257                                  || ent->v->absmax[0] < touch->v->absmin[0]
 258                                  || ent->v->absmin[1] > touch->v->absmax[1]
 259                                  || ent->v->absmax[1] < touch->v->absmin[1]
 260                                  || ent->v->absmin[2] > touch->v->absmax[2]
 261                                  || ent->v->absmax[2] < touch->v->absmin[2])
 262                                         continue;
 263                                 // LordHavoc: id bug that won't be fixed: triggers do not ignore their owner like solid objects do
 264                                 if (touch == ent)
 265                                         continue;
 266                                 if (!touch->v->touch || touch->v->solid != SOLID_TRIGGER)
 267                                         continue;
 268                                 old_self = pr_global_struct->self;
 269                                 old_other = pr_global_struct->other;
 270
 271                                 pr_global_struct->self = EDICT_TO_PROG(touch);
 272                                 pr_global_struct->other = EDICT_TO_PROG(ent);
 273                                 pr_global_struct->time = sv.time;
 274                                 PR_ExecuteProgram (touch->v->touch, "");
 275
 276                                 pr_global_struct->self = old_self;
 277                                 pr_global_struct->other = old_other;
 278                         }
 279                 }
 280         }
 281 }
 282
 283 void SV_LinkEdict_AreaGrid(edict_t *ent)
 284 {
 285         areagrid_t *grid;
 286         int igrid[3], igridmins[3], igridmaxs[3], gridnum;
 287
 288         igridmins[0] = (int) ((ent->v->absmin[0] + sv_areagrid_bias[0]) * sv_areagrid_scale[0]);
 289         igridmins[1] = (int) ((ent->v->absmin[1] + sv_areagrid_bias[1]) * sv_areagrid_scale[1]);
 290         //igridmins[2] = (int) ((ent->v->absmin[2] + sv_areagrid_bias[2]) * sv_areagrid_scale[2]);
 291         igridmaxs[0] = (int) ((ent->v->absmax[0] + sv_areagrid_bias[0]) * sv_areagrid_scale[0]) + 1;
 292         igridmaxs[1] = (int) ((ent->v->absmax[1] + sv_areagrid_bias[1]) * sv_areagrid_scale[1]) + 1;
 293         //igridmaxs[2] = (int) ((ent->v->absmax[2] + sv_areagrid_bias[2]) * sv_areagrid_scale[2]) + 1;
 294         if (igridmins[0] < 0 || igridmaxs[0] > AREA_GRID || igridmins[1] < 0 || igridmaxs[1] > AREA_GRID || ((igridmaxs[0] - igridmins[0]) * (igridmaxs[1] - igridmins[1])) > ENTITYGRIDAREAS)
 295         {
 296                 // wow, something outside the grid, store it as such
 297                 if (ent->v->solid == SOLID_TRIGGER)
 298                         InsertLinkBefore (&ent->e->areagrid[0], &sv_areagrid_outside.trigger_edicts, NUM_FOR_EDICT(ent));
 299                 else
 300                         InsertLinkBefore (&ent->e->areagrid[0], &sv_areagrid_outside.solid_edicts, NUM_FOR_EDICT(ent));
 301                 return;
 302         }
 303
 304         gridnum = 0;
 305         for (igrid[1] = igridmins[1];igrid[1] < igridmaxs[1];igrid[1]++)
 306         {
 307                 grid = sv_areagrid + igrid[1] * AREA_GRID + igridmins[0];
 308                 for (igrid[0] = igridmins[0];igrid[0] < igridmaxs[0];igrid[0]++, grid++, gridnum++)
 309                 {
 310                         if (ent->v->solid == SOLID_TRIGGER)
 311                                 InsertLinkBefore (&ent->e->areagrid[gridnum], &grid->trigger_edicts, NUM_FOR_EDICT(ent));
 312                         else
 313                                 InsertLinkBefore (&ent->e->areagrid[gridnum], &grid->solid_edicts, NUM_FOR_EDICT(ent));
 314                 }
 315         }
 316 }
 317
 318 /*
 319 ===============
 320 SV_LinkEdict
 321
 322 ===============
 323 */
 324 void SV_LinkEdict (edict_t *ent, qboolean touch_triggers)
 325 {
 326         model_t *model;
 327
 328         if (ent->e->areagrid[0].prev)
 329                 SV_UnlinkEdict (ent);   // unlink from old position
 330
 331         if (ent == sv.edicts)
 332                 return;         // don't add the world
 333
 334         if (ent->e->free)
 335                 return;
 336
 337 // set the abs box
 338
 339         if (ent->v->solid == SOLID_BSP)
 340         {
 341                 if (ent->v->modelindex < 0 || ent->v->modelindex > MAX_MODELS)
 342                         Host_Error("SOLID_BSP with invalid modelindex!\n");
 343                 model = sv.models[(int) ent->v->modelindex];
 344                 if (model != NULL)
 345                 {
 346                         Mod_CheckLoaded(model);
 347                         if (model->type != mod_brush)
 348                                 Host_Error("SOLID_BSP with non-BSP model\n");
 349
 350                         if (ent->v->angles[0] || ent->v->angles[2] || ent->v->avelocity[0] || ent->v->avelocity[2])
 351                         {
 352                                 VectorAdd(ent->v->origin, model->rotatedmins, ent->v->absmin);
 353                                 VectorAdd(ent->v->origin, model->rotatedmaxs, ent->v->absmax);
 354                         }
 355                         else if (ent->v->angles[1] || ent->v->avelocity[1])
 356                         {
 357                                 VectorAdd(ent->v->origin, model->yawmins, ent->v->absmin);
 358                                 VectorAdd(ent->v->origin, model->yawmaxs, ent->v->absmax);
 359                         }
 360                         else
 361                         {
 362                                 VectorAdd(ent->v->origin, model->normalmins, ent->v->absmin);
 363                                 VectorAdd(ent->v->origin, model->normalmaxs, ent->v->absmax);
 364                         }
 365                 }
 366                 else
 367                 {
 368                         // SOLID_BSP with no model is valid, mainly because some QC setup code does so temporarily
 369                         VectorAdd(ent->v->origin, ent->v->mins, ent->v->absmin);
 370                         VectorAdd(ent->v->origin, ent->v->maxs, ent->v->absmax);
 371                 }
 372         }
 373         else
 374         {
 375                 VectorAdd(ent->v->origin, ent->v->mins, ent->v->absmin);
 376                 VectorAdd(ent->v->origin, ent->v->maxs, ent->v->absmax);
 377         }
 378
 379 //
 380 // to make items easier to pick up and allow them to be grabbed off
 381 // of shelves, the abs sizes are expanded
 382 //
 383         if ((int)ent->v->flags & FL_ITEM)
 384         {
 385                 ent->v->absmin[0] -= 15;
 386                 ent->v->absmin[1] -= 15;
 387                 ent->v->absmin[2] -= 1;
 388                 ent->v->absmax[0] += 15;
 389                 ent->v->absmax[1] += 15;
 390                 ent->v->absmax[2] += 1;
 391         }
 392         else
 393         {
 394                 // because movement is clipped an epsilon away from an actual edge,
 395                 // we must fully check even when bounding boxes don't quite touch
 396                 ent->v->absmin[0] -= 1;
 397                 ent->v->absmin[1] -= 1;
 398                 ent->v->absmin[2] -= 1;
 399                 ent->v->absmax[0] += 1;
 400                 ent->v->absmax[1] += 1;
 401                 ent->v->absmax[2] += 1;
 402         }
 403
 404         if (ent->v->solid == SOLID_NOT)
 405                 return;
 406
 407         SV_LinkEdict_AreaGrid(ent);
 408
 409 // if touch_triggers, touch all entities at this node and descend for more
 410         if (touch_triggers)
 411                 SV_TouchAreaGrid(ent);
 412 }
 413
 414
 415
 416 /*
 417 ===============================================================================
 418
 419 POINT TESTING IN HULLS
 420
 421 ===============================================================================
 422 */
 423
 424 /*
 425 ============
 426 SV_TestEntityPosition
 427
 428 This could be a lot more efficient...
 429 ============
 430 */
 431 int SV_TestEntityPosition (edict_t *ent)
 432 {
 433         return SV_Move (ent->v->origin, ent->v->mins, ent->v->maxs, ent->v->origin, MOVE_NORMAL, ent).startsolid;
 434 }
 435
 436
 437 /*
 438 ===============================================================================
 439
 440 LINE TESTING IN HULLS
 441
 442 ===============================================================================
 443 */
 444
 445 /*
 446 ==================
 447 SV_ClipMoveToEntity
 448
 449 Handles selection or creation of a clipping hull, and offseting (and
 450 eventually rotation) of the end points
 451 ==================
 452 */
 453 trace_t SV_ClipMoveToEntity (edict_t *ent, vec3_t start, vec3_t mins, vec3_t maxs, vec3_t end)
 454 {
 455         int i;
 456         trace_t trace;
 457         model_t *model = NULL;
 458
 459         if ((int) ent->v->solid == SOLID_BSP)
 460         {
 461                 i = ent->v->modelindex;
 462                 if ((unsigned int) i >= MAX_MODELS)
 463                         Host_Error("SV_ClipMoveToEntity: invalid modelindex\n");
 464                 model = sv.models[i];
 465                 if (i != 0 && model == NULL)
 466                         Host_Error("SV_ClipMoveToEntity: invalid modelindex\n");
 467
 468                 Mod_CheckLoaded(model);
 469                 if (model->type != mod_brush)
 470                 {
 471                         Con_Printf ("SV_ClipMoveToEntity: SOLID_BSP with a non bsp model, entity dump:\n");
 472                         ED_Print (ent);
 473                         Host_Error ("SV_ClipMoveToEntity: SOLID_BSP with a non bsp model\n");
 474                 }
 475                 if (ent->v->movetype != MOVETYPE_PUSH)
 476                         Host_Error ("SV_ClipMoveToEntity: SOLID_BSP without MOVETYPE_PUSH");
 477         }
 478
 479         if (sv_polygoncollisions.integer && (mins[0] != maxs[0] || mins[1] != maxs[1] || mins[2] != maxs[2]))
 480                 Collision_PolygonClipTrace(&trace, ent, model, ent->v->origin, ent->v->angles, ent->v->mins, ent->v->maxs, start, mins, maxs, end);
 481         else
 482                 Collision_ClipTrace(&trace, ent, model, ent->v->origin, ent->v->angles, ent->v->mins, ent->v->maxs, start, mins, maxs, end);
 483
 484         return trace;
 485 }
 486
 487 //===========================================================================
 488
 489 void SV_ClipToNode(moveclip_t *clip, link_t *list)
 490 {
 491         link_t *l, *next;
 492         edict_t *touch;
 493         trace_t trace;
 494
 495         sv_areagrid_stats_nodechecks++;
 496         for (l = list->next;l != list;l = next)
 497         {
 498                 next = l->next;
 499                 touch = EDICT_NUM(l->entitynumber);
 500                 if (touch->e->areagridmarknumber == sv_areagrid_marknumber)
 501                         continue;
 502                 touch->e->areagridmarknumber = sv_areagrid_marknumber;
 503                 sv_areagrid_stats_entitychecks++;
 504
 505                 if (clip->boxmins[0] > touch->v->absmax[0]
 506                  || clip->boxmaxs[0] < touch->v->absmin[0]
 507                  || clip->boxmins[1] > touch->v->absmax[1]
 508                  || clip->boxmaxs[1] < touch->v->absmin[1]
 509                  || clip->boxmins[2] > touch->v->absmax[2]
 510                  || clip->boxmaxs[2] < touch->v->absmin[2])
 511                         continue;
 512
 513                 if (clip->type == MOVE_NOMONSTERS && touch->v->solid != SOLID_BSP)
 514                         continue;
 515
 516                 if (touch->v->solid == SOLID_NOT)
 517                         continue;
 518
 519                 if (clip->passedict)
 520                 {
 521                         if (clip->passedict->v->size[0] && !touch->v->size[0])
 522                                 continue;       // points never interact
 523                         if (PROG_TO_EDICT(touch->v->owner) == clip->passedict)
 524                                 continue;       // don't clip against own missiles
 525                         if (PROG_TO_EDICT(clip->passedict->v->owner) == touch)
 526                                 continue;       // don't clip against owner
 527                         // LordHavoc: corpse code
 528                         if (clip->passedict->v->solid == SOLID_CORPSE && (touch->v->solid == SOLID_SLIDEBOX || touch->v->solid == SOLID_CORPSE))
 529                                 continue;
 530                         if (clip->passedict->v->solid == SOLID_SLIDEBOX && touch->v->solid == SOLID_CORPSE)
 531                                 continue;
 532                 }
 533
 534                 if (touch == clip->passedict)
 535                         continue;
 536                 if (touch->v->solid == SOLID_TRIGGER)
 537                 {
 538                         ED_Print(touch);
 539                         Host_Error ("Trigger in clipping list");
 540                 }
 541
 542                 // might interact, so do an exact clip
 543                 if (touch->v->solid == SOLID_BSP)
 544                         trace = SV_ClipMoveToEntity (touch, clip->start, clip->hullmins, clip->hullmaxs, clip->end);
 545                 else if ((int)touch->v->flags & FL_MONSTER)
 546                         trace = SV_ClipMoveToEntity (touch, clip->start, clip->mins2, clip->maxs2, clip->end);
 547                 else
 548                         trace = SV_ClipMoveToEntity (touch, clip->start, clip->mins, clip->maxs, clip->end);
 549                 // LordHavoc: take the 'best' answers from the new trace and combine with existing data
 550                 if (trace.allsolid)
 551                         clip->trace.allsolid = true;
 552                 if (trace.startsolid)
 553                 {
 554                         clip->trace.startsolid = true;
 555                         if (!clip->trace.ent)
 556                                 clip->trace.ent = trace.ent;
 557                 }
 558                 if (trace.inopen)
 559                         clip->trace.inopen = true;
 560                 if (trace.inwater)
 561                         clip->trace.inwater = true;
 562                 if (trace.fraction < clip->trace.fraction)
 563                 {
 564                         clip->trace.fraction = trace.fraction;
 565                         VectorCopy(trace.endpos, clip->trace.endpos);
 566                         clip->trace.plane = trace.plane;
 567                         clip->trace.endcontents = trace.endcontents;
 568                         clip->trace.ent = trace.ent;
 569                 }
 570                 if (clip->trace.allsolid)
 571                         return;
 572         }
 573 }
 574
 575 /*
 576 ====================
 577 SV_ClipToAreaGrid
 578
 579 Mins and maxs enclose the entire area swept by the move
 580 ====================
 581 */
 582 void SV_ClipToAreaGrid(moveclip_t *clip)
 583 {
 584         areagrid_t *grid;
 585         int igrid[3], igridmins[3], igridmaxs[3];
 586
 587         if (clip->trace.allsolid)
 588                 return;
 589
 590         sv_areagrid_stats_calls++;
 591         sv_areagrid_marknumber++;
 592         igridmins[0] = (int) ((clip->boxmins[0] + sv_areagrid_bias[0]) * sv_areagrid_scale[0]);
 593         igridmins[1] = (int) ((clip->boxmins[1] + sv_areagrid_bias[1]) * sv_areagrid_scale[1]);
 594         //igridmins[2] = (int) ((clip->boxmins[2] + sv_areagrid_bias[2]) * sv_areagrid_scale[2]);
 595         igridmaxs[0] = (int) ((clip->boxmaxs[0] + sv_areagrid_bias[0]) * sv_areagrid_scale[0]) + 1;
 596         igridmaxs[1] = (int) ((clip->boxmaxs[1] + sv_areagrid_bias[1]) * sv_areagrid_scale[1]) + 1;
 597         //igridmaxs[2] = (int) ((clip->boxmaxs[2] + sv_areagrid_bias[2]) * sv_areagrid_scale[2]) + 1;
 598         igridmins[0] = max(0, igridmins[0]);
 599         igridmins[1] = max(0, igridmins[1]);
 600         //igridmins[2] = max(0, igridmins[2]);
 601         igridmaxs[0] = min(AREA_GRID, igridmaxs[0]);
 602         igridmaxs[1] = min(AREA_GRID, igridmaxs[1]);
 603         //igridmaxs[2] = min(AREA_GRID, igridmaxs[2]);
 604
 605         if (sv_areagrid_outside.solid_edicts.next != &sv_areagrid_outside.solid_edicts)
 606                 SV_ClipToNode(clip, &sv_areagrid_outside.solid_edicts);
 607
 608         for (igrid[1] = igridmins[1];igrid[1] < igridmaxs[1];igrid[1]++)
 609                 for (grid = sv_areagrid + igrid[1] * AREA_GRID + igridmins[0], igrid[0] = igridmins[0];igrid[0] < igridmaxs[0];igrid[0]++, grid++)
 610                         if (grid->solid_edicts.next != &grid->solid_edicts)
 611                                 SV_ClipToNode(clip, &grid->solid_edicts);
 612 }
 613
 614
 615 /*
 616 ==================
 617 SV_MoveBounds
 618 ==================
 619 */
 620 void SV_MoveBounds (vec3_t start, vec3_t mins, vec3_t maxs, vec3_t end, vec3_t boxmins, vec3_t boxmaxs)
 621 {
 622         if (!sv_debugmove.integer)
 623         {
 624                 int i;
 625
 626                 for (i=0 ; i<3 ; i++)
 627                 {
 628                         if (end[i] > start[i])
 629                         {
 630                                 boxmins[i] = start[i] + mins[i] - 1;
 631                                 boxmaxs[i] = end[i] + maxs[i] + 1;
 632                         }
 633                         else
 634                         {
 635                                 boxmins[i] = end[i] + mins[i] - 1;
 636                                 boxmaxs[i] = start[i] + maxs[i] + 1;
 637                         }
 638                 }
 639         }
 640         else
 641         {
 642                 // debug to test against everything
 643                 boxmins[0] = boxmins[1] = boxmins[2] = -999999999;
 644                 boxmaxs[0] = boxmaxs[1] = boxmaxs[2] =  999999999;
 645         }
 646 }
 647
 648 /*
 649 ==================
 650 SV_Move
 651 ==================
 652 */
 653 trace_t SV_Move (vec3_t start, vec3_t mins, vec3_t maxs, vec3_t end, int type, edict_t *passedict)
 654 {
 655         moveclip_t      clip;
 656         vec3_t          bigmins, bigmaxs;
 657         int                     i;
 658
 659         memset ( &clip, 0, sizeof ( moveclip_t ) );
 660
 661         VectorCopy(start, clip.start);
 662         VectorCopy(end, clip.end);
 663         VectorCopy(mins, clip.mins);
 664         VectorCopy(maxs, clip.maxs);
 665         clip.type = type;
 666         clip.passedict = passedict;
 667
 668         Collision_RoundUpToHullSize(sv.worldmodel, clip.mins, clip.maxs, clip.hullmins, clip.hullmaxs);
 669
 670         if (type == MOVE_MISSILE)
 671         {
 672                 // LordHavoc: modified this, was = -15, now = clip.mins[i] - 15
 673                 for (i=0 ; i<3 ; i++)
 674                 {
 675                         clip.mins2[i] = clip.mins[i] - 15;
 676                         clip.maxs2[i] = clip.maxs[i] + 15;
 677                 }
 678         }
 679         else
 680         {
 681                 VectorCopy (clip.mins, clip.mins2);
 682                 VectorCopy (clip.maxs, clip.maxs2);
 683         }
 684
 685         bigmins[0] = min(clip.mins2[0], clip.hullmins[0]);
 686         bigmaxs[0] = max(clip.maxs2[0], clip.hullmaxs[0]);
 687         bigmins[1] = min(clip.mins2[1], clip.hullmins[1]);
 688         bigmaxs[1] = max(clip.maxs2[1], clip.hullmaxs[1]);
 689         bigmins[2] = min(clip.mins2[2], clip.hullmins[2]);
 690         bigmaxs[2] = max(clip.maxs2[2], clip.hullmaxs[2]);
 691
 692         // clip to world
 693         clip.trace = SV_ClipMoveToEntity (sv.edicts, start, mins, maxs, end);
 694
 695         // clip to entities
 696         // create the bounding box of the entire move
 697         SV_MoveBounds ( start, bigmins, bigmaxs, end, clip.boxmins, clip.boxmaxs );
 698
 699         SV_ClipToAreaGrid(&clip);
 700
 701         return clip.trace;
 702 }
 703