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 //#define EDICT_FROM_AREA(l) ((edict_t *)((qbyte *)l - (int)&(((edict_t *)0)->area)))
  76 #define EDICT_FROM_AREA(l) ((edict_t *)l->entity)
  77
  78 //============================================================================
  79
  80 // ClearLink is used for new headnodes
  81 void ClearLink (link_t *l)
  82 {
  83         l->entity = NULL;
  84         l->prev = l->next = l;
  85 }
  86
  87 void RemoveLink (link_t *l)
  88 {
  89         l->next->prev = l->prev;
  90         l->prev->next = l->next;
  91 }
  92
  93 void InsertLinkBefore (link_t *l, link_t *before, void *ent)
  94 {
  95         l->entity = ent;
  96         l->next = before;
  97         l->prev = before->prev;
  98         l->prev->next = l;
  99         l->next->prev = l;
 100 }
 101
 102 void InsertLinkAfter (link_t *l, link_t *after)
 103 {
 104         l->next = after->next;
 105         l->prev = after;
 106         l->prev->next = l;
 107         l->next->prev = l;
 108 }
 109
 110
 111 /*
 112 ===============================================================================
 113
 114 ENTITY AREA CHECKING
 115
 116 ===============================================================================
 117 */
 118
 119 int sv_areagrid_stats_calls = 0;
 120 int sv_areagrid_stats_nodechecks = 0;
 121 int sv_areagrid_stats_entitychecks = 0;
 122
 123 void SV_AreaStats_f(void)
 124 {
 125         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);
 126         sv_areagrid_stats_calls = 0;
 127         sv_areagrid_stats_nodechecks = 0;
 128         sv_areagrid_stats_entitychecks = 0;
 129 }
 130
 131 typedef struct areagrid_s
 132 {
 133         link_t trigger_edicts;
 134         link_t solid_edicts;
 135 }
 136 areagrid_t;
 137
 138 #define AREA_GRID 512
 139 #define AREA_GRIDNODES (AREA_GRID * AREA_GRID)
 140
 141 static areagrid_t sv_areagrid[AREA_GRIDNODES], sv_areagrid_outside;
 142 static vec3_t sv_areagrid_bias, sv_areagrid_scale, sv_areagrid_mins, sv_areagrid_maxs, sv_areagrid_size;
 143 static int sv_areagrid_marknumber = 1;
 144
 145 void SV_CreateAreaGrid (vec3_t mins, vec3_t maxs)
 146 {
 147         int i;
 148         ClearLink (&sv_areagrid_outside.trigger_edicts);
 149         ClearLink (&sv_areagrid_outside.solid_edicts);
 150         // choose either the world box size, or a larger box to ensure the grid isn't too fine
 151         sv_areagrid_size[0] = max(maxs[0] - mins[0], AREA_GRID * sv_areagrid_mingridsize.value);
 152         sv_areagrid_size[1] = max(maxs[1] - mins[1], AREA_GRID * sv_areagrid_mingridsize.value);
 153         sv_areagrid_size[2] = max(maxs[2] - mins[2], AREA_GRID * sv_areagrid_mingridsize.value);
 154         // figure out the corners of such a box, centered at the center of the world box
 155         sv_areagrid_mins[0] = (mins[0] + maxs[0] - sv_areagrid_size[0]) * 0.5f;
 156         sv_areagrid_mins[1] = (mins[1] + maxs[1] - sv_areagrid_size[1]) * 0.5f;
 157         sv_areagrid_mins[2] = (mins[2] + maxs[2] - sv_areagrid_size[2]) * 0.5f;
 158         sv_areagrid_maxs[0] = (mins[0] + maxs[0] + sv_areagrid_size[0]) * 0.5f;
 159         sv_areagrid_maxs[1] = (mins[1] + maxs[1] + sv_areagrid_size[1]) * 0.5f;
 160         sv_areagrid_maxs[2] = (mins[2] + maxs[2] + sv_areagrid_size[2]) * 0.5f;
 161         // now calculate the actual useful info from that
 162         VectorNegate(sv_areagrid_mins, sv_areagrid_bias);
 163         sv_areagrid_scale[0] = AREA_GRID / sv_areagrid_size[0];
 164         sv_areagrid_scale[1] = AREA_GRID / sv_areagrid_size[1];
 165         sv_areagrid_scale[2] = AREA_GRID / sv_areagrid_size[2];
 166         for (i = 0;i < AREA_GRIDNODES;i++)
 167         {
 168                 ClearLink (&sv_areagrid[i].trigger_edicts);
 169                 ClearLink (&sv_areagrid[i].solid_edicts);
 170         }
 171         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);
 172 }
 173
 174 /*
 175 ===============
 176 SV_ClearWorld
 177
 178 ===============
 179 */
 180 void SV_ClearWorld (void)
 181 {
 182         Mod_CheckLoaded(sv.worldmodel);
 183         SV_CreateAreaGrid(sv.worldmodel->normalmins, sv.worldmodel->normalmaxs);
 184 }
 185
 186
 187 /*
 188 ===============
 189 SV_UnlinkEdict
 190
 191 ===============
 192 */
 193 void SV_UnlinkEdict (edict_t *ent)
 194 {
 195         int i;
 196         for (i = 0;i < ENTITYGRIDAREAS;i++)
 197         {
 198                 if (ent->areagrid[i].prev)
 199                 {
 200                         RemoveLink (&ent->areagrid[i]);
 201                         ent->areagrid[i].prev = ent->areagrid[i].next = NULL;
 202                 }
 203         }
 204 }
 205
 206
 207 void SV_TouchAreaGrid(edict_t *ent)
 208 {
 209         link_t *l, *next;
 210         edict_t *touch;
 211         areagrid_t *grid;
 212         int old_self, old_other, igrid[3], igridmins[3], igridmaxs[3];
 213
 214         sv_areagrid_marknumber++;
 215         igridmins[0] = (int) ((ent->v->absmin[0] + sv_areagrid_bias[0]) * sv_areagrid_scale[0]);
 216         igridmins[1] = (int) ((ent->v->absmin[1] + sv_areagrid_bias[1]) * sv_areagrid_scale[1]);
 217         //igridmins[2] = (int) ((ent->v->absmin[2] + sv_areagrid_bias[2]) * sv_areagrid_scale[2]);
 218         igridmaxs[0] = (int) ((ent->v->absmax[0] + sv_areagrid_bias[0]) * sv_areagrid_scale[0]) + 1;
 219         igridmaxs[1] = (int) ((ent->v->absmax[1] + sv_areagrid_bias[1]) * sv_areagrid_scale[1]) + 1;
 220         //igridmaxs[2] = (int) ((ent->v->absmax[2] + sv_areagrid_bias[2]) * sv_areagrid_scale[2]) + 1;
 221         igridmins[0] = max(0, igridmins[0]);
 222         igridmins[1] = max(0, igridmins[1]);
 223         //igridmins[2] = max(0, igridmins[2]);
 224         igridmaxs[0] = min(AREA_GRID, igridmaxs[0]);
 225         igridmaxs[1] = min(AREA_GRID, igridmaxs[1]);
 226         //igridmaxs[2] = min(AREA_GRID, igridmaxs[2]);
 227
 228         for (l = sv_areagrid_outside.trigger_edicts.next;l != &sv_areagrid_outside.trigger_edicts;l = next)
 229         {
 230                 next = l->next;
 231                 touch = EDICT_FROM_AREA(l);
 232                 if (ent->v->absmin[0] > touch->v->absmax[0]
 233                  || ent->v->absmax[0] < touch->v->absmin[0]
 234                  || ent->v->absmin[1] > touch->v->absmax[1]
 235                  || ent->v->absmax[1] < touch->v->absmin[1]
 236                  || ent->v->absmin[2] > touch->v->absmax[2]
 237                  || ent->v->absmax[2] < touch->v->absmin[2])
 238                         continue;
 239                 if (touch == ent)
 240                         continue;
 241                 if (!touch->v->touch || touch->v->solid != SOLID_TRIGGER)
 242                         continue;
 243                 old_self = pr_global_struct->self;
 244                 old_other = pr_global_struct->other;
 245
 246                 pr_global_struct->self = EDICT_TO_PROG(touch);
 247                 pr_global_struct->other = EDICT_TO_PROG(ent);
 248                 pr_global_struct->time = sv.time;
 249                 PR_ExecuteProgram (touch->v->touch, "");
 250
 251                 pr_global_struct->self = old_self;
 252                 pr_global_struct->other = old_other;
 253         }
 254
 255         for (igrid[1] = igridmins[1];igrid[1] < igridmaxs[1];igrid[1]++)
 256         {
 257                 grid = sv_areagrid + igrid[1] * AREA_GRID + igridmins[0];
 258                 for (igrid[0] = igridmins[0];igrid[0] < igridmaxs[0];igrid[0]++, grid++)
 259                 {
 260                         for (l = grid->trigger_edicts.next;l != &grid->trigger_edicts;l = next)
 261                         {
 262                                 next = l->next;
 263                                 touch = EDICT_FROM_AREA(l);
 264                                 if (touch->areagridmarknumber == sv_areagrid_marknumber)
 265                                         continue;
 266                                 touch->areagridmarknumber = sv_areagrid_marknumber;
 267                                 if (ent->v->absmin[0] > touch->v->absmax[0]
 268                                  || ent->v->absmax[0] < touch->v->absmin[0]
 269                                  || ent->v->absmin[1] > touch->v->absmax[1]
 270                                  || ent->v->absmax[1] < touch->v->absmin[1]
 271                                  || ent->v->absmin[2] > touch->v->absmax[2]
 272                                  || ent->v->absmax[2] < touch->v->absmin[2])
 273                                         continue;
 274                                 if (touch == ent)
 275                                         continue;
 276                                 if (!touch->v->touch || touch->v->solid != SOLID_TRIGGER)
 277                                         continue;
 278                                 old_self = pr_global_struct->self;
 279                                 old_other = pr_global_struct->other;
 280
 281                                 pr_global_struct->self = EDICT_TO_PROG(touch);
 282                                 pr_global_struct->other = EDICT_TO_PROG(ent);
 283                                 pr_global_struct->time = sv.time;
 284                                 PR_ExecuteProgram (touch->v->touch, "");
 285
 286                                 pr_global_struct->self = old_self;
 287                                 pr_global_struct->other = old_other;
 288                         }
 289                 }
 290         }
 291 }
 292
 293 void SV_LinkEdict_AreaGrid(edict_t *ent)
 294 {
 295         areagrid_t *grid;
 296         int igrid[3], igridmins[3], igridmaxs[3], gridnum;
 297
 298         igridmins[0] = (int) ((ent->v->absmin[0] + sv_areagrid_bias[0]) * sv_areagrid_scale[0]);
 299         igridmins[1] = (int) ((ent->v->absmin[1] + sv_areagrid_bias[1]) * sv_areagrid_scale[1]);
 300         //igridmins[2] = (int) ((ent->v->absmin[2] + sv_areagrid_bias[2]) * sv_areagrid_scale[2]);
 301         igridmaxs[0] = (int) ((ent->v->absmax[0] + sv_areagrid_bias[0]) * sv_areagrid_scale[0]) + 1;
 302         igridmaxs[1] = (int) ((ent->v->absmax[1] + sv_areagrid_bias[1]) * sv_areagrid_scale[1]) + 1;
 303         //igridmaxs[2] = (int) ((ent->v->absmax[2] + sv_areagrid_bias[2]) * sv_areagrid_scale[2]) + 1;
 304         if (igridmins[0] < 0 || igridmaxs[0] > AREA_GRID || igridmins[1] < 0 || igridmaxs[1] > AREA_GRID || ((igridmaxs[0] - igridmins[0]) * (igridmaxs[1] - igridmins[1])) > ENTITYGRIDAREAS)
 305         {
 306                 // wow, something outside the grid, store it as such
 307                 if (ent->v->solid == SOLID_TRIGGER)
 308                         InsertLinkBefore (&ent->areagrid[0], &sv_areagrid_outside.trigger_edicts, ent);
 309                 else
 310                         InsertLinkBefore (&ent->areagrid[0], &sv_areagrid_outside.solid_edicts, ent);
 311                 return;
 312         }
 313
 314         gridnum = 0;
 315         for (igrid[1] = igridmins[1];igrid[1] < igridmaxs[1];igrid[1]++)
 316         {
 317                 grid = sv_areagrid + igrid[1] * AREA_GRID + igridmins[0];
 318                 for (igrid[0] = igridmins[0];igrid[0] < igridmaxs[0];igrid[0]++, grid++, gridnum++)
 319                 {
 320                         if (ent->v->solid == SOLID_TRIGGER)
 321                                 InsertLinkBefore (&ent->areagrid[gridnum], &grid->trigger_edicts, ent);
 322                         else
 323                                 InsertLinkBefore (&ent->areagrid[gridnum], &grid->solid_edicts, ent);
 324                 }
 325         }
 326 }
 327
 328 /*
 329 ===============
 330 SV_LinkEdict
 331
 332 ===============
 333 */
 334 void SV_LinkEdict (edict_t *ent, qboolean touch_triggers)
 335 {
 336         model_t *model;
 337
 338         if (ent->areagrid[0].prev)
 339                 SV_UnlinkEdict (ent);   // unlink from old position
 340
 341         if (ent == sv.edicts)
 342                 return;         // don't add the world
 343
 344         if (ent->free)
 345                 return;
 346
 347 // set the abs box
 348
 349         if (ent->v->solid == SOLID_BSP)
 350         {
 351                 if (ent->v->modelindex < 0 || ent->v->modelindex > MAX_MODELS)
 352                         Host_Error("SOLID_BSP with invalid modelindex!\n");
 353                 model = sv.models[(int) ent->v->modelindex];
 354                 if (model != NULL)
 355                 {
 356                         if (model->type != mod_brush)
 357                                 Host_Error("SOLID_BSP with non-BSP model\n");
 358
 359                         if (ent->v->angles[0] || ent->v->angles[2] || ent->v->avelocity[0] || ent->v->avelocity[2])
 360                         {
 361                                 VectorAdd(ent->v->origin, model->rotatedmins, ent->v->absmin);
 362                                 VectorAdd(ent->v->origin, model->rotatedmaxs, ent->v->absmax);
 363                         }
 364                         else if (ent->v->angles[1] || ent->v->avelocity[1])
 365                         {
 366                                 VectorAdd(ent->v->origin, model->yawmins, ent->v->absmin);
 367                                 VectorAdd(ent->v->origin, model->yawmaxs, ent->v->absmax);
 368                         }
 369                         else
 370                         {
 371                                 VectorAdd(ent->v->origin, model->normalmins, ent->v->absmin);
 372                                 VectorAdd(ent->v->origin, model->normalmaxs, ent->v->absmax);
 373                         }
 374                 }
 375                 else
 376                 {
 377                         // SOLID_BSP with no model is valid, mainly because some QC setup code does so temporarily
 378                         VectorAdd(ent->v->origin, ent->v->mins, ent->v->absmin);
 379                         VectorAdd(ent->v->origin, ent->v->maxs, ent->v->absmax);
 380                 }
 381         }
 382         else
 383         {
 384                 VectorAdd(ent->v->origin, ent->v->mins, ent->v->absmin);
 385                 VectorAdd(ent->v->origin, ent->v->maxs, ent->v->absmax);
 386         }
 387
 388 //
 389 // to make items easier to pick up and allow them to be grabbed off
 390 // of shelves, the abs sizes are expanded
 391 //
 392         if ((int)ent->v->flags & FL_ITEM)
 393         {
 394                 ent->v->absmin[0] -= 15;
 395                 ent->v->absmin[1] -= 15;
 396                 ent->v->absmin[2] -= 1;
 397                 ent->v->absmax[0] += 15;
 398                 ent->v->absmax[1] += 15;
 399                 ent->v->absmax[2] += 1;
 400         }
 401         else
 402         {
 403                 // because movement is clipped an epsilon away from an actual edge,
 404                 // we must fully check even when bounding boxes don't quite touch
 405                 ent->v->absmin[0] -= 1;
 406                 ent->v->absmin[1] -= 1;
 407                 ent->v->absmin[2] -= 1;
 408                 ent->v->absmax[0] += 1;
 409                 ent->v->absmax[1] += 1;
 410                 ent->v->absmax[2] += 1;
 411         }
 412
 413         if (ent->v->solid == SOLID_NOT)
 414                 return;
 415
 416         SV_LinkEdict_AreaGrid(ent);
 417
 418 // if touch_triggers, touch all entities at this node and descend for more
 419         if (touch_triggers)
 420                 SV_TouchAreaGrid(ent);
 421 }
 422
 423
 424
 425 /*
 426 ===============================================================================
 427
 428 POINT TESTING IN HULLS
 429
 430 ===============================================================================
 431 */
 432
 433 /*
 434 ============
 435 SV_TestEntityPosition
 436
 437 This could be a lot more efficient...
 438 ============
 439 */
 440 int SV_TestEntityPosition (edict_t *ent)
 441 {
 442         return SV_Move (ent->v->origin, ent->v->mins, ent->v->maxs, ent->v->origin, MOVE_NORMAL, ent).startsolid;
 443 }
 444
 445
 446 /*
 447 ===============================================================================
 448
 449 LINE TESTING IN HULLS
 450
 451 ===============================================================================
 452 */
 453
 454 /*
 455 ==================
 456 SV_ClipMoveToEntity
 457
 458 Handles selection or creation of a clipping hull, and offseting (and
 459 eventually rotation) of the end points
 460 ==================
 461 */
 462 trace_t SV_ClipMoveToEntity (edict_t *ent, vec3_t start, vec3_t mins, vec3_t maxs, vec3_t end)
 463 {
 464         int i;
 465         trace_t trace;
 466         model_t *model;
 467
 468         i = ent->v->modelindex;
 469         if ((unsigned int) i >= MAX_MODELS)
 470                 Host_Error("SV_ClipMoveToEntity: invalid modelindex\n");
 471         model = sv.models[i];
 472         if (i != 0 && model == NULL)
 473                 Host_Error("SV_ClipMoveToEntity: invalid modelindex\n");
 474
 475         if ((int) ent->v->solid == SOLID_BSP)
 476         {
 477                 Mod_CheckLoaded(model);
 478                 if (model->type != mod_brush)
 479                 {
 480                         Con_Printf ("SV_ClipMoveToEntity: SOLID_BSP with a non bsp model, entity dump:\n");
 481                         ED_Print (ent);
 482                         Host_Error ("SV_ClipMoveToEntity: SOLID_BSP with a non bsp model\n");
 483                 }
 484                 if (ent->v->movetype != MOVETYPE_PUSH)
 485                         Host_Error ("SV_ClipMoveToEntity: SOLID_BSP without MOVETYPE_PUSH");
 486         }
 487
 488         if (sv_polygoncollisions.integer && (mins[0] != maxs[0] || mins[1] != maxs[1] || mins[2] != maxs[2]))
 489                 Collision_PolygonClipTrace(&trace, ent, model, ent->v->origin, ent->v->angles, ent->v->mins, ent->v->maxs, start, mins, maxs, end);
 490         else
 491                 Collision_ClipTrace(&trace, ent, model, ent->v->origin, ent->v->angles, ent->v->mins, ent->v->maxs, start, mins, maxs, end);
 492
 493         return trace;
 494 }
 495
 496 //===========================================================================
 497
 498 void SV_ClipToNode(moveclip_t *clip, link_t *list)
 499 {
 500         link_t *l, *next;
 501         edict_t *touch;
 502         trace_t trace;
 503
 504         sv_areagrid_stats_nodechecks++;
 505         for (l = list->next;l != list;l = next)
 506         {
 507                 next = l->next;
 508                 touch = EDICT_FROM_AREA(l);
 509                 if (touch->areagridmarknumber == sv_areagrid_marknumber)
 510                         continue;
 511                 touch->areagridmarknumber = sv_areagrid_marknumber;
 512                 sv_areagrid_stats_entitychecks++;
 513
 514                 if (clip->boxmins[0] > touch->v->absmax[0]
 515                  || clip->boxmaxs[0] < touch->v->absmin[0]
 516                  || clip->boxmins[1] > touch->v->absmax[1]
 517                  || clip->boxmaxs[1] < touch->v->absmin[1]
 518                  || clip->boxmins[2] > touch->v->absmax[2]
 519                  || clip->boxmaxs[2] < touch->v->absmin[2])
 520                         continue;
 521
 522                 if (clip->type == MOVE_NOMONSTERS && touch->v->solid != SOLID_BSP)
 523                         continue;
 524
 525                 if (touch->v->solid == SOLID_NOT)
 526                         continue;
 527
 528                 if (clip->passedict)
 529                 {
 530                         if (clip->passedict->v->size[0] && !touch->v->size[0])
 531                                 continue;       // points never interact
 532                         if (PROG_TO_EDICT(touch->v->owner) == clip->passedict)
 533                                 continue;       // don't clip against own missiles
 534                         if (PROG_TO_EDICT(clip->passedict->v->owner) == touch)
 535                                 continue;       // don't clip against owner
 536                         // LordHavoc: corpse code
 537                         if (clip->passedict->v->solid == SOLID_CORPSE && (touch->v->solid == SOLID_SLIDEBOX || touch->v->solid == SOLID_CORPSE))
 538                                 continue;
 539                         if (clip->passedict->v->solid == SOLID_SLIDEBOX && touch->v->solid == SOLID_CORPSE)
 540                                 continue;
 541                 }
 542
 543                 if (touch == clip->passedict)
 544                         continue;
 545                 if (touch->v->solid == SOLID_TRIGGER)
 546                 {
 547                         ED_Print(touch);
 548                         Host_Error ("Trigger in clipping list");
 549                 }
 550
 551                 // might interact, so do an exact clip
 552                 if (touch->v->solid == SOLID_BSP)
 553                         trace = SV_ClipMoveToEntity (touch, clip->start, clip->hullmins, clip->hullmaxs, clip->end);
 554                 else if ((int)touch->v->flags & FL_MONSTER)
 555                         trace = SV_ClipMoveToEntity (touch, clip->start, clip->mins2, clip->maxs2, clip->end);
 556                 else
 557                         trace = SV_ClipMoveToEntity (touch, clip->start, clip->mins, clip->maxs, clip->end);
 558                 // LordHavoc: take the 'best' answers from the new trace and combine with existing data
 559                 if (trace.allsolid)
 560                         clip->trace.allsolid = true;
 561                 if (trace.startsolid)
 562                 {
 563                         clip->trace.startsolid = true;
 564                         if (!clip->trace.ent)
 565                                 clip->trace.ent = trace.ent;
 566                 }
 567                 if (trace.inopen)
 568                         clip->trace.inopen = true;
 569                 if (trace.inwater)
 570                         clip->trace.inwater = true;
 571                 if (trace.fraction < clip->trace.fraction)
 572                 {
 573                         clip->trace.fraction = trace.fraction;
 574                         VectorCopy(trace.endpos, clip->trace.endpos);
 575                         clip->trace.plane = trace.plane;
 576                         clip->trace.endcontents = trace.endcontents;
 577                         clip->trace.ent = trace.ent;
 578                 }
 579                 if (clip->trace.allsolid)
 580                         return;
 581         }
 582 }
 583
 584 /*
 585 ====================
 586 SV_ClipToAreaGrid
 587
 588 Mins and maxs enclose the entire area swept by the move
 589 ====================
 590 */
 591 void SV_ClipToAreaGrid(moveclip_t *clip)
 592 {
 593         areagrid_t *grid;
 594         int igrid[3], igridmins[3], igridmaxs[3];
 595
 596         if (clip->trace.allsolid)
 597                 return;
 598
 599         sv_areagrid_stats_calls++;
 600         sv_areagrid_marknumber++;
 601         igridmins[0] = (int) ((clip->boxmins[0] + sv_areagrid_bias[0]) * sv_areagrid_scale[0]);
 602         igridmins[1] = (int) ((clip->boxmins[1] + sv_areagrid_bias[1]) * sv_areagrid_scale[1]);
 603         //igridmins[2] = (int) ((clip->boxmins[2] + sv_areagrid_bias[2]) * sv_areagrid_scale[2]);
 604         igridmaxs[0] = (int) ((clip->boxmaxs[0] + sv_areagrid_bias[0]) * sv_areagrid_scale[0]) + 1;
 605         igridmaxs[1] = (int) ((clip->boxmaxs[1] + sv_areagrid_bias[1]) * sv_areagrid_scale[1]) + 1;
 606         //igridmaxs[2] = (int) ((clip->boxmaxs[2] + sv_areagrid_bias[2]) * sv_areagrid_scale[2]) + 1;
 607         igridmins[0] = max(0, igridmins[0]);
 608         igridmins[1] = max(0, igridmins[1]);
 609         //igridmins[2] = max(0, igridmins[2]);
 610         igridmaxs[0] = min(AREA_GRID, igridmaxs[0]);
 611         igridmaxs[1] = min(AREA_GRID, igridmaxs[1]);
 612         //igridmaxs[2] = min(AREA_GRID, igridmaxs[2]);
 613
 614         if (sv_areagrid_outside.solid_edicts.next != &sv_areagrid_outside.solid_edicts)
 615                 SV_ClipToNode(clip, &sv_areagrid_outside.solid_edicts);
 616
 617         for (igrid[1] = igridmins[1];igrid[1] < igridmaxs[1];igrid[1]++)
 618                 for (grid = sv_areagrid + igrid[1] * AREA_GRID + igridmins[0], igrid[0] = igridmins[0];igrid[0] < igridmaxs[0];igrid[0]++, grid++)
 619                         if (grid->solid_edicts.next != &grid->solid_edicts)
 620                                 SV_ClipToNode(clip, &grid->solid_edicts);
 621 }
 622
 623
 624 /*
 625 ==================
 626 SV_MoveBounds
 627 ==================
 628 */
 629 void SV_MoveBounds (vec3_t start, vec3_t mins, vec3_t maxs, vec3_t end, vec3_t boxmins, vec3_t boxmaxs)
 630 {
 631         if (!sv_debugmove.integer)
 632         {
 633                 int i;
 634
 635                 for (i=0 ; i<3 ; i++)
 636                 {
 637                         if (end[i] > start[i])
 638                         {
 639                                 boxmins[i] = start[i] + mins[i] - 1;
 640                                 boxmaxs[i] = end[i] + maxs[i] + 1;
 641                         }
 642                         else
 643                         {
 644                                 boxmins[i] = end[i] + mins[i] - 1;
 645                                 boxmaxs[i] = start[i] + maxs[i] + 1;
 646                         }
 647                 }
 648         }
 649         else
 650         {
 651                 // debug to test against everything
 652                 boxmins[0] = boxmins[1] = boxmins[2] = -999999999;
 653                 boxmaxs[0] = boxmaxs[1] = boxmaxs[2] =  999999999;
 654         }
 655 }
 656
 657 /*
 658 ==================
 659 SV_Move
 660 ==================
 661 */
 662 trace_t SV_Move (vec3_t start, vec3_t mins, vec3_t maxs, vec3_t end, int type, edict_t *passedict)
 663 {
 664         moveclip_t      clip;
 665         vec3_t          bigmins, bigmaxs;
 666         int                     i;
 667
 668         memset ( &clip, 0, sizeof ( moveclip_t ) );
 669
 670         VectorCopy(start, clip.start);
 671         VectorCopy(end, clip.end);
 672         VectorCopy(mins, clip.mins);
 673         VectorCopy(maxs, clip.maxs);
 674         clip.type = type;
 675         clip.passedict = passedict;
 676
 677         Collision_RoundUpToHullSize(sv.worldmodel, clip.mins, clip.maxs, clip.hullmins, clip.hullmaxs);
 678
 679         if (type == MOVE_MISSILE)
 680         {
 681                 // LordHavoc: modified this, was = -15, now = clip.mins[i] - 15
 682                 for (i=0 ; i<3 ; i++)
 683                 {
 684                         clip.mins2[i] = clip.mins[i] - 15;
 685                         clip.maxs2[i] = clip.maxs[i] + 15;
 686                 }
 687         }
 688         else
 689         {
 690                 VectorCopy (clip.mins, clip.mins2);
 691                 VectorCopy (clip.maxs, clip.maxs2);
 692         }
 693
 694         bigmins[0] = min(clip.mins2[0], clip.hullmins[0]);
 695         bigmaxs[0] = max(clip.maxs2[0], clip.hullmaxs[0]);
 696         bigmins[1] = min(clip.mins2[1], clip.hullmins[1]);
 697         bigmaxs[1] = max(clip.maxs2[1], clip.hullmaxs[1]);
 698         bigmins[2] = min(clip.mins2[2], clip.hullmins[2]);
 699         bigmaxs[2] = max(clip.maxs2[2], clip.hullmaxs[2]);
 700
 701         // clip to world
 702         clip.trace = SV_ClipMoveToEntity (sv.edicts, start, mins, maxs, end);
 703
 704         // clip to entities
 705         // create the bounding box of the entire move
 706         SV_MoveBounds ( start, bigmins, bigmaxs, end, clip.boxmins, clip.boxmaxs );
 707
 708         SV_ClipToAreaGrid(&clip);
 709
 710         return clip.trace;
 711 }
 712