world.c

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