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", "disables collision detection optimizations for debugging purposes"};
  33 cvar_t sv_areagrid_mingridsize = {CVAR_NOTIFY, "sv_areagrid_mingridsize", "64", "minimum areagrid cell size, smaller values work better for lots of small objects, higher values for large objects"};
  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, "prints information on culling grid system");
  42         Collision_Init();
  43 }
  44
  45 //============================================================================
  46
  47 // ClearLink is used for new headnodes
  48 static void ClearLink (link_t *l)
  49 {
  50         l->entitynumber = 0;
  51         l->prev = l->next = l;
  52 }
  53
  54 static void RemoveLink (link_t *l)
  55 {
  56         l->next->prev = l->prev;
  57         l->prev->next = l->next;
  58 }
  59
  60 static void InsertLinkBefore (link_t *l, link_t *before, int entitynumber)
  61 {
  62         l->entitynumber = entitynumber;
  63         l->next = before;
  64         l->prev = before->prev;
  65         l->prev->next = l;
  66         l->next->prev = l;
  67 }
  68
  69
  70 /*
  71 ===============================================================================
  72
  73 ENTITY AREA CHECKING
  74
  75 ===============================================================================
  76 */
  77
  78 int sv_areagrid_stats_calls = 0;
  79 int sv_areagrid_stats_nodechecks = 0;
  80 int sv_areagrid_stats_entitychecks = 0;
  81
  82 void SV_AreaStats_f(void)
  83 {
  84         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);
  85         sv_areagrid_stats_calls = 0;
  86         sv_areagrid_stats_nodechecks = 0;
  87         sv_areagrid_stats_entitychecks = 0;
  88 }
  89
  90 typedef struct areagrid_s
  91 {
  92         link_t edicts;
  93 }
  94 areagrid_t;
  95
  96 #define AREA_GRID 512
  97 #define AREA_GRIDNODES (AREA_GRID * AREA_GRID)
  98
  99 static areagrid_t sv_areagrid[AREA_GRIDNODES], sv_areagrid_outside;
 100 static vec3_t sv_areagrid_bias, sv_areagrid_scale, sv_areagrid_mins, sv_areagrid_maxs, sv_areagrid_size;
 101 static int sv_areagrid_marknumber = 1;
 102
 103 void SV_CreateAreaGrid (vec3_t mins, vec3_t maxs)
 104 {
 105         int i;
 106         ClearLink (&sv_areagrid_outside.edicts);
 107         // choose either the world box size, or a larger box to ensure the grid isn't too fine
 108         sv_areagrid_size[0] = max(maxs[0] - mins[0], AREA_GRID * sv_areagrid_mingridsize.value);
 109         sv_areagrid_size[1] = max(maxs[1] - mins[1], AREA_GRID * sv_areagrid_mingridsize.value);
 110         sv_areagrid_size[2] = max(maxs[2] - mins[2], AREA_GRID * sv_areagrid_mingridsize.value);
 111         // figure out the corners of such a box, centered at the center of the world box
 112         sv_areagrid_mins[0] = (mins[0] + maxs[0] - sv_areagrid_size[0]) * 0.5f;
 113         sv_areagrid_mins[1] = (mins[1] + maxs[1] - sv_areagrid_size[1]) * 0.5f;
 114         sv_areagrid_mins[2] = (mins[2] + maxs[2] - sv_areagrid_size[2]) * 0.5f;
 115         sv_areagrid_maxs[0] = (mins[0] + maxs[0] + sv_areagrid_size[0]) * 0.5f;
 116         sv_areagrid_maxs[1] = (mins[1] + maxs[1] + sv_areagrid_size[1]) * 0.5f;
 117         sv_areagrid_maxs[2] = (mins[2] + maxs[2] + sv_areagrid_size[2]) * 0.5f;
 118         // now calculate the actual useful info from that
 119         VectorNegate(sv_areagrid_mins, sv_areagrid_bias);
 120         sv_areagrid_scale[0] = AREA_GRID / sv_areagrid_size[0];
 121         sv_areagrid_scale[1] = AREA_GRID / sv_areagrid_size[1];
 122         sv_areagrid_scale[2] = AREA_GRID / sv_areagrid_size[2];
 123         for (i = 0;i < AREA_GRIDNODES;i++)
 124         {
 125                 ClearLink (&sv_areagrid[i].edicts);
 126         }
 127         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);
 128 }
 129
 130 /*
 131 ===============
 132 SV_ClearWorld
 133
 134 ===============
 135 */
 136 void SV_ClearWorld (void)
 137 {
 138         SV_CreateAreaGrid(sv.worldmodel->normalmins, sv.worldmodel->normalmaxs);
 139 }
 140
 141
 142 /*
 143 ===============
 144 SV_UnlinkEdict
 145
 146 ===============
 147 */
 148 void SV_UnlinkEdict (prvm_edict_t *ent)
 149 {
 150         int i;
 151         for (i = 0;i < ENTITYGRIDAREAS;i++)
 152         {
 153                 if (ent->priv.server->areagrid[i].prev)
 154                 {
 155                         RemoveLink (&ent->priv.server->areagrid[i]);
 156                         ent->priv.server->areagrid[i].prev = ent->priv.server->areagrid[i].next = NULL;
 157                 }
 158         }
 159 }
 160
 161 int SV_EntitiesInBox(vec3_t mins, vec3_t maxs, int maxlist, prvm_edict_t **list)
 162 {
 163         int numlist;
 164         areagrid_t *grid;
 165         link_t *l;
 166         prvm_edict_t *ent;
 167         int igrid[3], igridmins[3], igridmaxs[3];
 168
 169         sv_areagrid_stats_calls++;
 170         sv_areagrid_marknumber++;
 171         igridmins[0] = (int) floor((mins[0] + sv_areagrid_bias[0]) * sv_areagrid_scale[0]);
 172         igridmins[1] = (int) floor((mins[1] + sv_areagrid_bias[1]) * sv_areagrid_scale[1]);
 173         //igridmins[2] = (int) ((mins[2] + sv_areagrid_bias[2]) * sv_areagrid_scale[2]);
 174         igridmaxs[0] = (int) floor((maxs[0] + sv_areagrid_bias[0]) * sv_areagrid_scale[0]) + 1;
 175         igridmaxs[1] = (int) floor((maxs[1] + sv_areagrid_bias[1]) * sv_areagrid_scale[1]) + 1;
 176         //igridmaxs[2] = (int) ((maxs[2] + sv_areagrid_bias[2]) * sv_areagrid_scale[2]) + 1;
 177         igridmins[0] = max(0, igridmins[0]);
 178         igridmins[1] = max(0, igridmins[1]);
 179         //igridmins[2] = max(0, igridmins[2]);
 180         igridmaxs[0] = min(AREA_GRID, igridmaxs[0]);
 181         igridmaxs[1] = min(AREA_GRID, igridmaxs[1]);
 182         //igridmaxs[2] = min(AREA_GRID, igridmaxs[2]);
 183
 184         numlist = 0;
 185         // add entities not linked into areagrid because they are too big or
 186         // outside the grid bounds
 187         if (sv_areagrid_outside.edicts.next != &sv_areagrid_outside.edicts)
 188         {
 189                 for (l = sv_areagrid_outside.edicts.next;l != &sv_areagrid_outside.edicts;l = l->next)
 190                 {
 191                         ent = PRVM_EDICT_NUM_UNSIGNED(l->entitynumber);
 192                         if (ent->priv.server->areagridmarknumber != sv_areagrid_marknumber)
 193                         {
 194                                 ent->priv.server->areagridmarknumber = sv_areagrid_marknumber;
 195                                 if (!ent->priv.server->free && BoxesOverlap(mins, maxs, ent->fields.server->absmin, ent->fields.server->absmax))
 196                                 {
 197                                         if (numlist < maxlist)
 198                                                 list[numlist] = ent;
 199                                         numlist++;
 200                                 }
 201                                 sv_areagrid_stats_entitychecks++;
 202                         }
 203                 }
 204         }
 205         // add grid linked entities
 206         for (igrid[1] = igridmins[1];igrid[1] < igridmaxs[1];igrid[1]++)
 207         {
 208                 grid = sv_areagrid + igrid[1] * AREA_GRID + igridmins[0];
 209                 for (igrid[0] = igridmins[0];igrid[0] < igridmaxs[0];igrid[0]++, grid++)
 210                 {
 211                         if (grid->edicts.next != &grid->edicts)
 212                         {
 213                                 for (l = grid->edicts.next;l != &grid->edicts;l = l->next)
 214                                 {
 215                                         ent = PRVM_EDICT_NUM_UNSIGNED(l->entitynumber);
 216                                         if (ent->priv.server->areagridmarknumber != sv_areagrid_marknumber)
 217                                         {
 218                                                 ent->priv.server->areagridmarknumber = sv_areagrid_marknumber;
 219                                                 if (!ent->priv.server->free && BoxesOverlap(mins, maxs, ent->fields.server->absmin, ent->fields.server->absmax))
 220                                                 {
 221                                                         if (numlist < maxlist)
 222                                                                 list[numlist] = ent;
 223                                                         numlist++;
 224                                                 }
 225                                                 //      Con_Printf("%d %f %f %f %f %f %f : %d : %f %f %f %f %f %f\n", BoxesOverlap(mins, maxs, ent->fields.server->absmin, ent->fields.server->absmax), ent->fields.server->absmin[0], ent->fields.server->absmin[1], ent->fields.server->absmin[2], ent->fields.server->absmax[0], ent->fields.server->absmax[1], ent->fields.server->absmax[2], PRVM_NUM_FOR_EDICT(ent), mins[0], mins[1], mins[2], maxs[0], maxs[1], maxs[2]);
 226                                         }
 227                                         sv_areagrid_stats_entitychecks++;
 228                                 }
 229                         }
 230                 }
 231         }
 232         return numlist;
 233 }
 234
 235 void SV_TouchAreaGrid(prvm_edict_t *ent)
 236 {
 237         int i, numtouchedicts, old_self, old_other;
 238         prvm_edict_t *touch, *touchedicts[MAX_EDICTS];
 239
 240         // build a list of edicts to touch, because the link loop can be corrupted
 241         // by SV_IncreaseEdicts called during touch functions
 242         numtouchedicts = SV_EntitiesInBox(ent->fields.server->absmin, ent->fields.server->absmax, MAX_EDICTS, touchedicts);
 243         if (numtouchedicts > MAX_EDICTS)
 244         {
 245                 // this never happens
 246                 Con_Printf("SV_EntitiesInBox returned %i edicts, max was %i\n", numtouchedicts, MAX_EDICTS);
 247                 numtouchedicts = MAX_EDICTS;
 248         }
 249
 250         old_self = prog->globals.server->self;
 251         old_other = prog->globals.server->other;
 252         for (i = 0;i < numtouchedicts;i++)
 253         {
 254                 touch = touchedicts[i];
 255                 if (touch != ent && (int)touch->fields.server->solid == SOLID_TRIGGER && touch->fields.server->touch)
 256                 {
 257                         prog->globals.server->self = PRVM_EDICT_TO_PROG(touch);
 258                         prog->globals.server->other = PRVM_EDICT_TO_PROG(ent);
 259                         prog->globals.server->time = sv.time;
 260                         PRVM_ExecuteProgram (touch->fields.server->touch, "QC function self.touch is missing");
 261                 }
 262         }
 263         prog->globals.server->self = old_self;
 264         prog->globals.server->other = old_other;
 265 }
 266
 267 void SV_LinkEdict_AreaGrid(prvm_edict_t *ent)
 268 {
 269         areagrid_t *grid;
 270         int igrid[3], igridmins[3], igridmaxs[3], gridnum, entitynumber = PRVM_NUM_FOR_EDICT(ent);
 271
 272         if (entitynumber <= 0 || entitynumber >= prog->max_edicts || PRVM_EDICT_NUM(entitynumber) != ent)
 273         {
 274                 Con_Printf ("SV_LinkEdict_AreaGrid: invalid edict %p (edicts is %p, edict compared to prog->edicts is %i)\n", ent, prog->edicts, entitynumber);
 275                 return;
 276         }
 277
 278         igridmins[0] = (int) floor((ent->fields.server->absmin[0] + sv_areagrid_bias[0]) * sv_areagrid_scale[0]);
 279         igridmins[1] = (int) floor((ent->fields.server->absmin[1] + sv_areagrid_bias[1]) * sv_areagrid_scale[1]);
 280         //igridmins[2] = (int) ((ent->fields.server->absmin[2] + sv_areagrid_bias[2]) * sv_areagrid_scale[2]);
 281         igridmaxs[0] = (int) floor((ent->fields.server->absmax[0] + sv_areagrid_bias[0]) * sv_areagrid_scale[0]) + 1;
 282         igridmaxs[1] = (int) floor((ent->fields.server->absmax[1] + sv_areagrid_bias[1]) * sv_areagrid_scale[1]) + 1;
 283         //igridmaxs[2] = (int) ((ent->fields.server->absmax[2] + sv_areagrid_bias[2]) * sv_areagrid_scale[2]) + 1;
 284         if (igridmins[0] < 0 || igridmaxs[0] > AREA_GRID || igridmins[1] < 0 || igridmaxs[1] > AREA_GRID || ((igridmaxs[0] - igridmins[0]) * (igridmaxs[1] - igridmins[1])) > ENTITYGRIDAREAS)
 285         {
 286                 // wow, something outside the grid, store it as such
 287                 InsertLinkBefore (&ent->priv.server->areagrid[0], &sv_areagrid_outside.edicts, entitynumber);
 288                 return;
 289         }
 290
 291         gridnum = 0;
 292         for (igrid[1] = igridmins[1];igrid[1] < igridmaxs[1];igrid[1]++)
 293         {
 294                 grid = sv_areagrid + igrid[1] * AREA_GRID + igridmins[0];
 295                 for (igrid[0] = igridmins[0];igrid[0] < igridmaxs[0];igrid[0]++, grid++, gridnum++)
 296                         InsertLinkBefore (&ent->priv.server->areagrid[gridnum], &grid->edicts, entitynumber);
 297         }
 298 }
 299
 300 /*
 301 ===============
 302 SV_LinkEdict
 303
 304 ===============
 305 */
 306 void SV_LinkEdict (prvm_edict_t *ent, qboolean touch_triggers)
 307 {
 308         model_t *model;
 309
 310         if (ent->priv.server->areagrid[0].prev)
 311                 SV_UnlinkEdict (ent);   // unlink from old position
 312
 313         if (ent == prog->edicts)
 314                 return;         // don't add the world
 315
 316         if (ent->priv.server->free)
 317                 return;
 318
 319 // set the abs box
 320
 321         if (ent->fields.server->solid == SOLID_BSP)
 322         {
 323                 int modelindex = ent->fields.server->modelindex;
 324                 if (modelindex < 0 || modelindex > MAX_MODELS)
 325                 {
 326                         Con_Printf("edict %i: SOLID_BSP with invalid modelindex!\n", PRVM_NUM_FOR_EDICT(ent));
 327                         modelindex = 0;
 328                 }
 329                 model = sv.models[modelindex];
 330                 if (model != NULL)
 331                 {
 332                         if (!model->TraceBox)
 333                                 Con_Printf("edict %i: SOLID_BSP with non-collidable model\n", PRVM_NUM_FOR_EDICT(ent));
 334
 335                         if (ent->fields.server->angles[0] || ent->fields.server->angles[2] || ent->fields.server->avelocity[0] || ent->fields.server->avelocity[2])
 336                         {
 337                                 VectorAdd(ent->fields.server->origin, model->rotatedmins, ent->fields.server->absmin);
 338                                 VectorAdd(ent->fields.server->origin, model->rotatedmaxs, ent->fields.server->absmax);
 339                         }
 340                         else if (ent->fields.server->angles[1] || ent->fields.server->avelocity[1])
 341                         {
 342                                 VectorAdd(ent->fields.server->origin, model->yawmins, ent->fields.server->absmin);
 343                                 VectorAdd(ent->fields.server->origin, model->yawmaxs, ent->fields.server->absmax);
 344                         }
 345                         else
 346                         {
 347                                 VectorAdd(ent->fields.server->origin, model->normalmins, ent->fields.server->absmin);
 348                                 VectorAdd(ent->fields.server->origin, model->normalmaxs, ent->fields.server->absmax);
 349                         }
 350                 }
 351                 else
 352                 {
 353                         // SOLID_BSP with no model is valid, mainly because some QC setup code does so temporarily
 354                         VectorAdd(ent->fields.server->origin, ent->fields.server->mins, ent->fields.server->absmin);
 355                         VectorAdd(ent->fields.server->origin, ent->fields.server->maxs, ent->fields.server->absmax);
 356                 }
 357         }
 358         else
 359         {
 360                 VectorAdd(ent->fields.server->origin, ent->fields.server->mins, ent->fields.server->absmin);
 361                 VectorAdd(ent->fields.server->origin, ent->fields.server->maxs, ent->fields.server->absmax);
 362         }
 363
 364 //
 365 // to make items easier to pick up and allow them to be grabbed off
 366 // of shelves, the abs sizes are expanded
 367 //
 368         if ((int)ent->fields.server->flags & FL_ITEM)
 369         {
 370                 ent->fields.server->absmin[0] -= 15;
 371                 ent->fields.server->absmin[1] -= 15;
 372                 ent->fields.server->absmin[2] -= 1;
 373                 ent->fields.server->absmax[0] += 15;
 374                 ent->fields.server->absmax[1] += 15;
 375                 ent->fields.server->absmax[2] += 1;
 376         }
 377         else
 378         {
 379                 // because movement is clipped an epsilon away from an actual edge,
 380                 // we must fully check even when bounding boxes don't quite touch
 381                 ent->fields.server->absmin[0] -= 1;
 382                 ent->fields.server->absmin[1] -= 1;
 383                 ent->fields.server->absmin[2] -= 1;
 384                 ent->fields.server->absmax[0] += 1;
 385                 ent->fields.server->absmax[1] += 1;
 386                 ent->fields.server->absmax[2] += 1;
 387         }
 388
 389         SV_LinkEdict_AreaGrid(ent);
 390
 391 // if touch_triggers, touch all entities at this node and descend for more
 392         if (touch_triggers && ent->fields.server->solid != SOLID_NOT)
 393                 SV_TouchAreaGrid(ent);
 394 }
 395
 396
 397
 398 /*
 399 ===============================================================================
 400
 401 LINE TESTING IN HULLS
 402
 403 ===============================================================================
 404 */
 405
 406 /*
 407 ==================
 408 SV_ClipMoveToEntity
 409
 410 Handles selection or creation of a clipping hull, and offseting (and
 411 eventually rotation) of the end points
 412 ==================
 413 */
 414 trace_t SV_ClipMoveToEntity(prvm_edict_t *ent, const vec3_t start, const vec3_t mins, const vec3_t maxs, const vec3_t end, int movetype, int hitsupercontents)
 415 {
 416         trace_t trace;
 417         model_t *model = NULL;
 418         matrix4x4_t matrix, imatrix;
 419         float tempnormal[3], starttransformed[3], endtransformed[3];
 420
 421         memset(&trace, 0, sizeof(trace));
 422         trace.fraction = trace.realfraction = 1;
 423         VectorCopy(end, trace.endpos);
 424
 425         if ((int) ent->fields.server->solid == SOLID_BSP || movetype == MOVE_HITMODEL)
 426         {
 427                 unsigned int modelindex = ent->fields.server->modelindex;
 428                 // if the modelindex is 0, it shouldn't be SOLID_BSP!
 429                 if (modelindex == 0)
 430                 {
 431                         Con_Printf("SV_ClipMoveToEntity: edict %i: SOLID_BSP with no model\n", PRVM_NUM_FOR_EDICT(ent));
 432                         return trace;
 433                 }
 434                 if (modelindex >= MAX_MODELS)
 435                 {
 436                         Con_Printf("SV_ClipMoveToEntity: edict %i: SOLID_BSP with invalid modelindex\n", PRVM_NUM_FOR_EDICT(ent));
 437                         return trace;
 438                 }
 439                 model = sv.models[modelindex];
 440                 if (modelindex != 0 && model == NULL)
 441                 {
 442                         Con_Printf("SV_ClipMoveToEntity: edict %i: SOLID_BSP with invalid modelindex\n", PRVM_NUM_FOR_EDICT(ent));
 443                         return trace;
 444                 }
 445
 446                 if ((int) ent->fields.server->solid == SOLID_BSP)
 447                 {
 448                         if (!model->TraceBox)
 449                         {
 450                                 Con_Printf("SV_ClipMoveToEntity: edict %i: SOLID_BSP with a non-collidable model\n", PRVM_NUM_FOR_EDICT(ent));
 451                                 return trace;
 452                         }
 453                         //if ((int) ent->fields.server->movetype != MOVETYPE_PUSH)
 454                         //{
 455                         //      Con_Printf("SV_ClipMoveToEntity: edict %i: SOLID_BSP without MOVETYPE_PUSH\n", PRVM_NUM_FOR_EDICT(ent));
 456                         //      return trace;
 457                         //}
 458                 }
 459                 Matrix4x4_CreateFromQuakeEntity(&matrix, ent->fields.server->origin[0], ent->fields.server->origin[1], ent->fields.server->origin[2], ent->fields.server->angles[0], ent->fields.server->angles[1], ent->fields.server->angles[2], 1);
 460         }
 461         else
 462                 Matrix4x4_CreateTranslate(&matrix, ent->fields.server->origin[0], ent->fields.server->origin[1], ent->fields.server->origin[2]);
 463
 464         Matrix4x4_Invert_Simple(&imatrix, &matrix);
 465         Matrix4x4_Transform(&imatrix, start, starttransformed);
 466         Matrix4x4_Transform(&imatrix, end, endtransformed);
 467 #if COLLISIONPARANOID >= 3
 468         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]);
 469 #endif
 470
 471         if (model && model->TraceBox)
 472         {
 473                 int frame;
 474                 frame = (int)ent->fields.server->frame;
 475                 frame = bound(0, frame, (model->numframes - 1));
 476                 model->TraceBox(model, frame, &trace, starttransformed, mins, maxs, endtransformed, hitsupercontents);
 477         }
 478         else
 479                 Collision_ClipTrace_Box(&trace, ent->fields.server->mins, ent->fields.server->maxs, starttransformed, mins, maxs, endtransformed, hitsupercontents, SUPERCONTENTS_SOLID);
 480         trace.fraction = bound(0, trace.fraction, 1);
 481         trace.realfraction = bound(0, trace.realfraction, 1);
 482
 483         if (trace.fraction < 1)
 484         {
 485                 VectorLerp(start, trace.fraction, end, trace.endpos);
 486                 VectorCopy(trace.plane.normal, tempnormal);
 487                 Matrix4x4_Transform3x3(&matrix, tempnormal, trace.plane.normal);
 488                 // FIXME: should recalc trace.plane.dist
 489         }
 490         else
 491                 VectorCopy(end, trace.endpos);
 492
 493         return trace;
 494 }
 495
 496 /*
 497 ==================
 498 SV_ClipMoveToWorld
 499 ==================
 500 */
 501 trace_t SV_ClipMoveToWorld(const vec3_t start, const vec3_t mins, const vec3_t maxs, const vec3_t end, int movetype, int hitsupercontents)
 502 {
 503         trace_t trace;
 504         memset(&trace, 0, sizeof(trace));
 505         trace.fraction = trace.realfraction = 1;
 506         sv.worldmodel->TraceBox(sv.worldmodel, 0, &trace, start, mins, maxs, end, hitsupercontents);
 507         trace.fraction = bound(0, trace.fraction, 1);
 508         trace.realfraction = bound(0, trace.realfraction, 1);
 509         VectorLerp(start, trace.fraction, end, trace.endpos);
 510         return trace;
 511 }
 512
 513 //===========================================================================
 514
 515 /*
 516 ==================
 517 SV_Move
 518 ==================
 519 */
 520 #if COLLISIONPARANOID >= 1
 521 trace_t SV_Move_(const vec3_t start, const vec3_t mins, const vec3_t maxs, const vec3_t end, int type, prvm_edict_t *passedict)
 522 #else
 523 trace_t SV_Move(const vec3_t start, const vec3_t mins, const vec3_t maxs, const vec3_t end, int type, prvm_edict_t *passedict)
 524 #endif
 525 {
 526         vec3_t hullmins, hullmaxs;
 527         int i;
 528         int hitsupercontentsmask;
 529         int passedictprog;
 530         qboolean pointtrace;
 531         prvm_edict_t *traceowner, *touch;
 532         trace_t trace;
 533         // bounding box of entire move area
 534         vec3_t clipboxmins, clipboxmaxs;
 535         // size of the moving object
 536         vec3_t clipmins, clipmaxs;
 537         // size when clipping against monsters
 538         vec3_t clipmins2, clipmaxs2;
 539         // start and end origin of move
 540         vec3_t clipstart, clipend;
 541         // trace results
 542         trace_t cliptrace;
 543         int numtouchedicts;
 544         prvm_edict_t *touchedicts[MAX_EDICTS];
 545
 546         VectorCopy(start, clipstart);
 547         VectorCopy(end, clipend);
 548         VectorCopy(mins, clipmins);
 549         VectorCopy(maxs, clipmaxs);
 550         VectorCopy(mins, clipmins2);
 551         VectorCopy(maxs, clipmaxs2);
 552 #if COLLISIONPARANOID >= 3
 553         Con_Printf("move(%f %f %f,%f %f %f)", clipstart[0], clipstart[1], clipstart[2], clipend[0], clipend[1], clipend[2]);
 554 #endif
 555
 556         hitsupercontentsmask = SUPERCONTENTS_SOLID;
 557         if (passedict)
 558         {
 559                 if (passedict->fields.server->solid == SOLID_SLIDEBOX)
 560                         hitsupercontentsmask |= SUPERCONTENTS_PLAYERCLIP;
 561                 if ((int)passedict->fields.server->flags & FL_MONSTER)
 562                         hitsupercontentsmask |= SUPERCONTENTS_MONSTERCLIP;
 563         }
 564
 565         // clip to world
 566         cliptrace = SV_ClipMoveToWorld(clipstart, clipmins, clipmaxs, clipend, type, hitsupercontentsmask);
 567         cliptrace.startsolid = cliptrace.bmodelstartsolid;
 568         if (cliptrace.startsolid || cliptrace.fraction < 1)
 569                 cliptrace.ent = prog->edicts;
 570         if (type == MOVE_WORLDONLY)
 571                 return cliptrace;
 572
 573         if (type == MOVE_MISSILE)
 574         {
 575                 // LordHavoc: modified this, was = -15, now -= 15
 576                 for (i = 0;i < 3;i++)
 577                 {
 578                         clipmins2[i] -= 15;
 579                         clipmaxs2[i] += 15;
 580                 }
 581         }
 582
 583         // get adjusted box for bmodel collisions if the world is q1bsp or hlbsp
 584         if (sv.worldmodel && sv.worldmodel->brush.RoundUpToHullSize)
 585                 sv.worldmodel->brush.RoundUpToHullSize(sv.worldmodel, clipmins, clipmaxs, hullmins, hullmaxs);
 586         else
 587         {
 588                 VectorCopy(clipmins, hullmins);
 589                 VectorCopy(clipmaxs, hullmaxs);
 590         }
 591
 592         // create the bounding box of the entire move
 593         for (i = 0;i < 3;i++)
 594         {
 595                 clipboxmins[i] = min(clipstart[i], cliptrace.endpos[i]) + min(hullmins[i], clipmins2[i]) - 1;
 596                 clipboxmaxs[i] = max(clipstart[i], cliptrace.endpos[i]) + max(hullmaxs[i], clipmaxs2[i]) + 1;
 597         }
 598
 599         // debug override to test against everything
 600         if (sv_debugmove.integer)
 601         {
 602                 clipboxmins[0] = clipboxmins[1] = clipboxmins[2] = -999999999;
 603                 clipboxmaxs[0] = clipboxmaxs[1] = clipboxmaxs[2] =  999999999;
 604         }
 605
 606         // if the passedict is world, make it NULL (to avoid two checks each time)
 607         if (passedict == prog->edicts)
 608                 passedict = NULL;
 609         // precalculate prog value for passedict for comparisons
 610         passedictprog = PRVM_EDICT_TO_PROG(passedict);
 611         // figure out whether this is a point trace for comparisons
 612         pointtrace = VectorCompare(clipmins, clipmaxs);
 613         // precalculate passedict's owner edict pointer for comparisons
 614         traceowner = passedict ? PRVM_PROG_TO_EDICT(passedict->fields.server->owner) : 0;
 615
 616         // clip to enttiies
 617         numtouchedicts = SV_EntitiesInBox(clipboxmins, clipboxmaxs, MAX_EDICTS, touchedicts);
 618         if (numtouchedicts > MAX_EDICTS)
 619         {
 620                 // this never happens
 621                 Con_Printf("SV_EntitiesInBox returned %i edicts, max was %i\n", numtouchedicts, MAX_EDICTS);
 622                 numtouchedicts = MAX_EDICTS;
 623         }
 624         for (i = 0;i < numtouchedicts;i++)
 625         {
 626                 touch = touchedicts[i];
 627
 628                 if (touch->fields.server->solid < SOLID_BBOX)
 629                         continue;
 630                 if (type == MOVE_NOMONSTERS && touch->fields.server->solid != SOLID_BSP)
 631                         continue;
 632
 633                 if (passedict)
 634                 {
 635                         // don't clip against self
 636                         if (passedict == touch)
 637                                 continue;
 638                         // don't clip owned entities against owner
 639                         if (traceowner == touch)
 640                                 continue;
 641                         // don't clip owner against owned entities
 642                         if (passedictprog == touch->fields.server->owner)
 643                                 continue;
 644                         // don't clip points against points (they can't collide)
 645                         if (pointtrace && VectorCompare(touch->fields.server->mins, touch->fields.server->maxs) && (type != MOVE_MISSILE || !((int)touch->fields.server->flags & FL_MONSTER)))
 646                                 continue;
 647                         // don't clip corpse against character
 648                         if (passedict->fields.server->solid == SOLID_CORPSE && (touch->fields.server->solid == SOLID_SLIDEBOX || touch->fields.server->solid == SOLID_CORPSE))
 649                                 continue;
 650                         // don't clip character against corpse
 651                         if (passedict->fields.server->solid == SOLID_SLIDEBOX && touch->fields.server->solid == SOLID_CORPSE)
 652                                 continue;
 653                 }
 654
 655                 // might interact, so do an exact clip
 656                 if ((int)touch->fields.server->flags & FL_MONSTER)
 657                         trace = SV_ClipMoveToEntity(touch, clipstart, clipmins2, clipmaxs2, clipend, type, hitsupercontentsmask);
 658                 else
 659                         trace = SV_ClipMoveToEntity(touch, clipstart, clipmins, clipmaxs, clipend, type, hitsupercontentsmask);
 660                 // LordHavoc: take the 'best' answers from the new trace and combine with existing data
 661                 if (trace.allsolid)
 662                         cliptrace.allsolid = true;
 663                 if (trace.startsolid)
 664                 {
 665                         if (touch->fields.server->solid == SOLID_BSP)
 666                                 cliptrace.bmodelstartsolid = true;
 667                         cliptrace.startsolid = true;
 668                         if (cliptrace.realfraction == 1)
 669                                 cliptrace.ent = touch;
 670                 }
 671                 // don't set this except on the world, because it can easily confuse
 672                 // monsters underwater if there's a bmodel involved in the trace
 673                 // (inopen && inwater is how they check water visibility)
 674                 //if (trace.inopen)
 675                 //      cliptrace.inopen = true;
 676                 if (trace.inwater)
 677                         cliptrace.inwater = true;
 678                 if (trace.realfraction < cliptrace.realfraction)
 679                 {
 680                         cliptrace.fraction = trace.fraction;
 681                         cliptrace.realfraction = trace.realfraction;
 682                         VectorCopy(trace.endpos, cliptrace.endpos);
 683                         cliptrace.plane = trace.plane;
 684                         cliptrace.ent = touch;
 685                 }
 686                 cliptrace.startsupercontents |= trace.startsupercontents;
 687         }
 688
 689         return cliptrace;
 690 }
 691
 692 #if COLLISIONPARANOID >= 1
 693 trace_t SV_Move(const vec3_t start, const vec3_t mins, const vec3_t maxs, const vec3_t end, int type, prvm_edict_t *passedict)
 694 {
 695         int endstuck;
 696         trace_t trace;
 697         vec3_t temp;
 698         trace = SV_Move_(start, mins, maxs, end, type, passedict);
 699         if (passedict)
 700         {
 701                 VectorCopy(trace.endpos, temp);
 702                 endstuck = SV_Move_(temp, mins, maxs, temp, type, passedict).startsolid;
 703 #if COLLISIONPARANOID < 3
 704                 if (trace.startsolid || endstuck)
 705 #endif
 706                         Con_Printf("%s{e%i:%f %f %f:%f %f %f:%f:%f %f %f%s%s}\n", (trace.startsolid || endstuck) ? "\002" : "", passedict ? passedict - prog->edicts : -1, passedict->fields.server->origin[0], passedict->fields.server->origin[1], passedict->fields.server->origin[2], end[0] - passedict->fields.server->origin[0], end[1] - passedict->fields.server->origin[1], end[2] - passedict->fields.server->origin[2], trace.fraction, trace.endpos[0] - passedict->fields.server->origin[0], trace.endpos[1] - passedict->fields.server->origin[1], trace.endpos[2] - passedict->fields.server->origin[2], trace.startsolid ? " startstuck" : "", endstuck ? " endstuck" : "");
 707         }
 708         return trace;
 709 }
 710 #endif
 711
 712