sv_phys.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 // sv_phys.c
  21
  22 #include "quakedef.h"
  23 #include "prvm_cmds.h"
  24
  25 /*
  26
  27
  28 pushmove objects do not obey gravity, and do not interact with each other or trigger fields, but block normal movement and push normal objects when they move.
  29
  30 onground is set for toss objects when they come to a complete rest.  it is set for steping or walking objects
  31
  32 doors, plats, etc are SOLID_BSP, and MOVETYPE_PUSH
  33 bonus items are SOLID_TRIGGER touch, and MOVETYPE_TOSS
  34 corpses are SOLID_NOT and MOVETYPE_TOSS
  35 crates are SOLID_BBOX and MOVETYPE_TOSS
  36 walking monsters are SOLID_SLIDEBOX and MOVETYPE_STEP
  37 flying/floating monsters are SOLID_SLIDEBOX and MOVETYPE_FLY
  38
  39 solid_edge items only clip against bsp models.
  40
  41 */
  42
  43 #define MOVE_EPSILON    0.01
  44
  45 void SV_Physics_Toss (prvm_edict_t *ent);
  46
  47 int SV_GetPitchSign(prvm_prog_t *prog, prvm_edict_t *ent)
  48 {
  49         model_t *model;
  50         if (
  51                         (model = SV_GetModelFromEdict(ent))
  52                         ?
  53                         model->type == mod_alias
  54                         :
  55                         (
  56                          (((unsigned char)PRVM_serveredictfloat(ent, pflags)) & PFLAGS_FULLDYNAMIC)
  57                          ||
  58                          ((gamemode == GAME_TENEBRAE) && ((unsigned int)PRVM_serveredictfloat(ent, effects) & (16 | 32)))
  59                         )
  60            )
  61                 return -1;
  62         return 1;
  63 }
  64
  65 /*
  66 ===============================================================================
  67
  68 LINE TESTING IN HULLS
  69
  70 ===============================================================================
  71 */
  72
  73 int SV_GenericHitSuperContentsMask(const prvm_edict_t *passedict)
  74 {
  75         prvm_prog_t *prog = SVVM_prog;
  76         if (passedict)
  77         {
  78                 int dphitcontentsmask = (int)PRVM_serveredictfloat(passedict, dphitcontentsmask);
  79                 if (dphitcontentsmask)
  80                         return dphitcontentsmask;
  81                 else if (PRVM_serveredictfloat(passedict, solid) == SOLID_SLIDEBOX)
  82                 {
  83                         if ((int)PRVM_serveredictfloat(passedict, flags) & FL_MONSTER)
  84                                 return SUPERCONTENTS_SOLID | SUPERCONTENTS_BODY | SUPERCONTENTS_MONSTERCLIP;
  85                         else
  86                                 return SUPERCONTENTS_SOLID | SUPERCONTENTS_BODY | SUPERCONTENTS_PLAYERCLIP;
  87                 }
  88                 else if (PRVM_serveredictfloat(passedict, solid) == SOLID_CORPSE)
  89                         return SUPERCONTENTS_SOLID | SUPERCONTENTS_BODY;
  90                 else if (PRVM_serveredictfloat(passedict, solid) == SOLID_TRIGGER)
  91                         return SUPERCONTENTS_SOLID | SUPERCONTENTS_BODY;
  92                 else
  93                         return SUPERCONTENTS_SOLID | SUPERCONTENTS_BODY | SUPERCONTENTS_CORPSE;
  94         }
  95         else
  96                 return SUPERCONTENTS_SOLID | SUPERCONTENTS_BODY | SUPERCONTENTS_CORPSE;
  97 }
  98
  99 /*
 100 ==================
 101 SV_TracePoint
 102 ==================
 103 */
 104 trace_t SV_TracePoint(const vec3_t start, int type, prvm_edict_t *passedict, int hitsupercontentsmask, int skipsupercontentsmask, int skipmaterialflagsmask)
 105 {
 106         prvm_prog_t *prog = SVVM_prog;
 107         int i, bodysupercontents;
 108         int passedictprog;
 109         float pitchsign = 1;
 110         prvm_edict_t *traceowner, *touch;
 111         trace_t trace;
 112         // temporary storage because prvm_vec_t may differ from vec_t
 113         vec3_t touchmins, touchmaxs;
 114         // bounding box of entire move area
 115         vec3_t clipboxmins, clipboxmaxs;
 116         // size when clipping against monsters
 117         vec3_t clipmins2, clipmaxs2;
 118         // start and end origin of move
 119         vec3_t clipstart;
 120         // trace results
 121         trace_t cliptrace;
 122         // matrices to transform into/out of other entity's space
 123         matrix4x4_t matrix, imatrix;
 124         // model of other entity
 125         model_t *model;
 126         // list of entities to test for collisions
 127         int numtouchedicts;
 128         static prvm_edict_t *touchedicts[MAX_EDICTS];
 129         int clipgroup;
 130
 131         //return SV_TraceBox(start, vec3_origin, vec3_origin, end, type, passedict, hitsupercontentsmask, skipsupercontentsmask, skipmaterialflagsmask);
 132
 133         VectorCopy(start, clipstart);
 134         VectorClear(clipmins2);
 135         VectorClear(clipmaxs2);
 136 #if COLLISIONPARANOID >= 3
 137         Con_Printf("move(%f %f %f)", clipstart[0], clipstart[1], clipstart[2]);
 138 #endif
 139
 140         // clip to world
 141         Collision_ClipPointToWorld(&cliptrace, sv.worldmodel, clipstart, hitsupercontentsmask, skipsupercontentsmask, skipmaterialflagsmask);
 142         cliptrace.worldstartsolid = cliptrace.bmodelstartsolid = cliptrace.startsolid;
 143         if (cliptrace.startsolid || cliptrace.fraction < 1)
 144                 cliptrace.ent = prog->edicts;
 145         if (type == MOVE_WORLDONLY)
 146                 goto finished;
 147
 148         if (type == MOVE_MISSILE)
 149         {
 150                 // LadyHavoc: modified this, was = -15, now -= 15
 151                 for (i = 0;i < 3;i++)
 152                 {
 153                         clipmins2[i] -= 15;
 154                         clipmaxs2[i] += 15;
 155                 }
 156         }
 157
 158         // create the bounding box of the entire move
 159         for (i = 0;i < 3;i++)
 160         {
 161                 clipboxmins[i] = min(clipstart[i], cliptrace.endpos[i]) + clipmins2[i] - 1;
 162                 clipboxmaxs[i] = max(clipstart[i], cliptrace.endpos[i]) + clipmaxs2[i] + 1;
 163         }
 164
 165         // debug override to test against everything
 166         if (sv_debugmove.integer)
 167         {
 168                 clipboxmins[0] = clipboxmins[1] = clipboxmins[2] = (vec_t)-999999999;
 169                 clipboxmaxs[0] = clipboxmaxs[1] = clipboxmaxs[2] =  (vec_t)999999999;
 170         }
 171
 172         // if the passedict is world, make it NULL (to avoid two checks each time)
 173         if (passedict == prog->edicts)
 174                 passedict = NULL;
 175         // precalculate prog value for passedict for comparisons
 176         passedictprog = PRVM_EDICT_TO_PROG(passedict);
 177         // precalculate passedict's owner edict pointer for comparisons
 178         traceowner = passedict ? PRVM_PROG_TO_EDICT(PRVM_serveredictedict(passedict, owner)) : 0;
 179
 180         clipgroup = passedict ? (int)PRVM_serveredictfloat(passedict, clipgroup) : 0;
 181
 182         // clip to entities
 183         // because this uses World_EntitiestoBox, we know all entity boxes overlap
 184         // the clip region, so we can skip culling checks in the loop below
 185         numtouchedicts = SV_EntitiesInBox(clipboxmins, clipboxmaxs, MAX_EDICTS, touchedicts);
 186         if (numtouchedicts > MAX_EDICTS)
 187         {
 188                 // this never happens
 189                 Con_Printf("SV_EntitiesInBox returned %i edicts, max was %i\n", numtouchedicts, MAX_EDICTS);
 190                 numtouchedicts = MAX_EDICTS;
 191         }
 192         for (i = 0;i < numtouchedicts;i++)
 193         {
 194                 touch = touchedicts[i];
 195
 196                 if (PRVM_serveredictfloat(touch, solid) < SOLID_BBOX)
 197                         continue;
 198                 if (type == MOVE_NOMONSTERS && PRVM_serveredictfloat(touch, solid) != SOLID_BSP)
 199                         continue;
 200
 201                 if (passedict)
 202                 {
 203                         // don't clip against self
 204                         if (passedict == touch)
 205                                 continue;
 206                         // don't clip owned entities against owner
 207                         if (traceowner == touch)
 208                                 continue;
 209                         // don't clip owner against owned entities
 210                         if (passedictprog == PRVM_serveredictedict(touch, owner))
 211                                 continue;
 212                         // don't clip against any entities in the same clipgroup (DP_RM_CLIPGROUP)
 213                         if (clipgroup && clipgroup == (int)PRVM_serveredictfloat(touch, clipgroup))
 214                                 continue;
 215                         // don't clip points against points (they can't collide)
 216                         if (VectorCompare(PRVM_serveredictvector(touch, mins), PRVM_serveredictvector(touch, maxs)) && (type != MOVE_MISSILE || !((int)PRVM_serveredictfloat(touch, flags) & FL_MONSTER)))
 217                                 continue;
 218                 }
 219
 220                 bodysupercontents = PRVM_serveredictfloat(touch, solid) == SOLID_CORPSE ? SUPERCONTENTS_CORPSE : SUPERCONTENTS_BODY;
 221
 222                 // might interact, so do an exact clip
 223                 model = NULL;
 224                 if ((int) PRVM_serveredictfloat(touch, solid) == SOLID_BSP || type == MOVE_HITMODEL)
 225                 {
 226                         model = SV_GetModelFromEdict(touch);
 227                         pitchsign = SV_GetPitchSign(prog, touch);
 228                 }
 229                 if (model)
 230                         Matrix4x4_CreateFromQuakeEntity(&matrix, PRVM_serveredictvector(touch, origin)[0], PRVM_serveredictvector(touch, origin)[1], PRVM_serveredictvector(touch, origin)[2], pitchsign * PRVM_serveredictvector(touch, angles)[0], PRVM_serveredictvector(touch, angles)[1], PRVM_serveredictvector(touch, angles)[2], 1);
 231                 else
 232                         Matrix4x4_CreateTranslate(&matrix, PRVM_serveredictvector(touch, origin)[0], PRVM_serveredictvector(touch, origin)[1], PRVM_serveredictvector(touch, origin)[2]);
 233                 Matrix4x4_Invert_Simple(&imatrix, &matrix);
 234                 VM_GenerateFrameGroupBlend(prog, touch->priv.server->framegroupblend, touch);
 235                 VM_FrameBlendFromFrameGroupBlend(touch->priv.server->frameblend, touch->priv.server->framegroupblend, model, sv.time);
 236                 VM_UpdateEdictSkeleton(prog, touch, model, touch->priv.server->frameblend);
 237                 VectorCopy(PRVM_serveredictvector(touch, mins), touchmins);
 238                 VectorCopy(PRVM_serveredictvector(touch, maxs), touchmaxs);
 239                 if (type == MOVE_MISSILE && (int)PRVM_serveredictfloat(touch, flags) & FL_MONSTER)
 240                         Collision_ClipToGenericEntity(&trace, model, touch->priv.server->frameblend, &touch->priv.server->skeleton, touchmins, touchmaxs, bodysupercontents, &matrix, &imatrix, clipstart, clipmins2, clipmaxs2, clipstart, hitsupercontentsmask, skipsupercontentsmask, skipmaterialflagsmask, 0.0f);
 241                 else
 242                         Collision_ClipPointToGenericEntity(&trace, model, touch->priv.server->frameblend, &touch->priv.server->skeleton, touchmins, touchmaxs, bodysupercontents, &matrix, &imatrix, clipstart, hitsupercontentsmask, skipsupercontentsmask, skipmaterialflagsmask);
 243
 244                 Collision_CombineTraces(&cliptrace, &trace, (void *)touch, PRVM_serveredictfloat(touch, solid) == SOLID_BSP);
 245         }
 246
 247 finished:
 248         return cliptrace;
 249 }
 250
 251 /*
 252 ==================
 253 SV_TraceLine
 254 ==================
 255 */
 256 trace_t SV_TraceLine(const vec3_t start, const vec3_t end, int type, prvm_edict_t *passedict, int hitsupercontentsmask, int skipsupercontentsmask, int skipmaterialflagsmask, float extend)
 257 {
 258         prvm_prog_t *prog = SVVM_prog;
 259         int i, bodysupercontents;
 260         int passedictprog;
 261         float pitchsign = 1;
 262         prvm_edict_t *traceowner, *touch;
 263         trace_t trace;
 264         // temporary storage because prvm_vec_t may differ from vec_t
 265         vec3_t touchmins, touchmaxs;
 266         // bounding box of entire move area
 267         vec3_t clipboxmins, clipboxmaxs;
 268         // size when clipping against monsters
 269         vec3_t clipmins2, clipmaxs2;
 270         // start and end origin of move
 271         vec3_t clipstart, clipend;
 272         // trace results
 273         trace_t cliptrace;
 274         // matrices to transform into/out of other entity's space
 275         matrix4x4_t matrix, imatrix;
 276         // model of other entity
 277         model_t *model;
 278         // list of entities to test for collisions
 279         int numtouchedicts;
 280         static prvm_edict_t *touchedicts[MAX_EDICTS];
 281         int clipgroup;
 282         if (VectorCompare(start, end))
 283                 return SV_TracePoint(start, type, passedict, hitsupercontentsmask, skipsupercontentsmask, skipmaterialflagsmask);
 284
 285         //return SV_TraceBox(start, vec3_origin, vec3_origin, end, type, passedict, hitsupercontentsmask);
 286
 287         VectorCopy(start, clipstart);
 288         VectorCopy(end, clipend);
 289         VectorClear(clipmins2);
 290         VectorClear(clipmaxs2);
 291 #if COLLISIONPARANOID >= 3
 292         Con_Printf("move(%f %f %f,%f %f %f)", clipstart[0], clipstart[1], clipstart[2], clipend[0], clipend[1], clipend[2]);
 293 #endif
 294
 295         // clip to world
 296         Collision_ClipLineToWorld(&cliptrace, sv.worldmodel, clipstart, clipend, hitsupercontentsmask, skipsupercontentsmask, skipmaterialflagsmask, extend, false);
 297         cliptrace.worldstartsolid = cliptrace.bmodelstartsolid = cliptrace.startsolid;
 298         if (cliptrace.startsolid || cliptrace.fraction < 1)
 299                 cliptrace.ent = prog->edicts;
 300         if (type == MOVE_WORLDONLY)
 301                 goto finished;
 302
 303         if (type == MOVE_MISSILE)
 304         {
 305                 // LadyHavoc: modified this, was = -15, now -= 15
 306                 for (i = 0;i < 3;i++)
 307                 {
 308                         clipmins2[i] -= 15;
 309                         clipmaxs2[i] += 15;
 310                 }
 311         }
 312
 313         // create the bounding box of the entire move
 314         for (i = 0;i < 3;i++)
 315         {
 316                 clipboxmins[i] = min(clipstart[i], cliptrace.endpos[i]) + clipmins2[i] - 1;
 317                 clipboxmaxs[i] = max(clipstart[i], cliptrace.endpos[i]) + clipmaxs2[i] + 1;
 318         }
 319
 320         // debug override to test against everything
 321         if (sv_debugmove.integer)
 322         {
 323                 clipboxmins[0] = clipboxmins[1] = clipboxmins[2] = (vec_t)-999999999;
 324                 clipboxmaxs[0] = clipboxmaxs[1] = clipboxmaxs[2] =  (vec_t)999999999;
 325         }
 326
 327         // if the passedict is world, make it NULL (to avoid two checks each time)
 328         if (passedict == prog->edicts)
 329                 passedict = NULL;
 330         // precalculate prog value for passedict for comparisons
 331         passedictprog = PRVM_EDICT_TO_PROG(passedict);
 332         // precalculate passedict's owner edict pointer for comparisons
 333         traceowner = passedict ? PRVM_PROG_TO_EDICT(PRVM_serveredictedict(passedict, owner)) : 0;
 334
 335         clipgroup = passedict ? (int)PRVM_serveredictfloat(passedict, clipgroup) : 0;
 336
 337         // clip to entities
 338         // because this uses World_EntitiestoBox, we know all entity boxes overlap
 339         // the clip region, so we can skip culling checks in the loop below
 340         numtouchedicts = SV_EntitiesInBox(clipboxmins, clipboxmaxs, MAX_EDICTS, touchedicts);
 341         if (numtouchedicts > MAX_EDICTS)
 342         {
 343                 // this never happens
 344                 Con_Printf("SV_EntitiesInBox returned %i edicts, max was %i\n", numtouchedicts, MAX_EDICTS);
 345                 numtouchedicts = MAX_EDICTS;
 346         }
 347         for (i = 0;i < numtouchedicts;i++)
 348         {
 349                 touch = touchedicts[i];
 350
 351                 if (PRVM_serveredictfloat(touch, solid) < SOLID_BBOX)
 352                         continue;
 353                 if (type == MOVE_NOMONSTERS && PRVM_serveredictfloat(touch, solid) != SOLID_BSP)
 354                         continue;
 355
 356                 if (passedict)
 357                 {
 358                         // don't clip against self
 359                         if (passedict == touch)
 360                                 continue;
 361                         // don't clip owned entities against owner
 362                         if (traceowner == touch)
 363                                 continue;
 364                         // don't clip owner against owned entities
 365                         if (passedictprog == PRVM_serveredictedict(touch, owner))
 366                                 continue;
 367                         // don't clip against any entities in the same clipgroup (DP_RM_CLIPGROUP)
 368                         if (clipgroup && clipgroup == (int)PRVM_serveredictfloat(touch, clipgroup))
 369                                 continue;
 370                         // don't clip points against points (they can't collide)
 371                         if (VectorCompare(PRVM_serveredictvector(touch, mins), PRVM_serveredictvector(touch, maxs)) && (type != MOVE_MISSILE || !((int)PRVM_serveredictfloat(touch, flags) & FL_MONSTER)))
 372                                 continue;
 373                 }
 374
 375                 bodysupercontents = PRVM_serveredictfloat(touch, solid) == SOLID_CORPSE ? SUPERCONTENTS_CORPSE : SUPERCONTENTS_BODY;
 376
 377                 // might interact, so do an exact clip
 378                 model = NULL;
 379                 if ((int) PRVM_serveredictfloat(touch, solid) == SOLID_BSP || type == MOVE_HITMODEL)
 380                 {
 381                         model = SV_GetModelFromEdict(touch);
 382                         pitchsign = SV_GetPitchSign(prog, touch);
 383                 }
 384                 if (model)
 385                         Matrix4x4_CreateFromQuakeEntity(&matrix, PRVM_serveredictvector(touch, origin)[0], PRVM_serveredictvector(touch, origin)[1], PRVM_serveredictvector(touch, origin)[2], pitchsign * PRVM_serveredictvector(touch, angles)[0], PRVM_serveredictvector(touch, angles)[1], PRVM_serveredictvector(touch, angles)[2], 1);
 386                 else
 387                         Matrix4x4_CreateTranslate(&matrix, PRVM_serveredictvector(touch, origin)[0], PRVM_serveredictvector(touch, origin)[1], PRVM_serveredictvector(touch, origin)[2]);
 388                 Matrix4x4_Invert_Simple(&imatrix, &matrix);
 389                 VM_GenerateFrameGroupBlend(prog, touch->priv.server->framegroupblend, touch);
 390                 VM_FrameBlendFromFrameGroupBlend(touch->priv.server->frameblend, touch->priv.server->framegroupblend, model, sv.time);
 391                 VM_UpdateEdictSkeleton(prog, touch, model, touch->priv.server->frameblend);
 392                 VectorCopy(PRVM_serveredictvector(touch, mins), touchmins);
 393                 VectorCopy(PRVM_serveredictvector(touch, maxs), touchmaxs);
 394                 if (type == MOVE_MISSILE && (int)PRVM_serveredictfloat(touch, flags) & FL_MONSTER)
 395                         Collision_ClipToGenericEntity(&trace, model, touch->priv.server->frameblend, &touch->priv.server->skeleton, touchmins, touchmaxs, bodysupercontents, &matrix, &imatrix, clipstart, clipmins2, clipmaxs2, clipend, hitsupercontentsmask, skipsupercontentsmask, skipmaterialflagsmask, extend);
 396                 else
 397                         Collision_ClipLineToGenericEntity(&trace, model, touch->priv.server->frameblend, &touch->priv.server->skeleton, touchmins, touchmaxs, bodysupercontents, &matrix, &imatrix, clipstart, clipend, hitsupercontentsmask, skipsupercontentsmask, skipmaterialflagsmask, extend, false);
 398
 399                 Collision_CombineTraces(&cliptrace, &trace, (void *)touch, PRVM_serveredictfloat(touch, solid) == SOLID_BSP);
 400         }
 401
 402 finished:
 403         return cliptrace;
 404 }
 405
 406 /*
 407 ==================
 408 SV_Move
 409 ==================
 410 */
 411 #if COLLISIONPARANOID >= 1
 412 static trace_t SV_TraceBox_(const vec3_t start, const vec3_t mins, const vec3_t maxs, const vec3_t end, int type, prvm_edict_t *passedict, int hitsupercontentsmask, int skipsupercontentsmask, int skipmaterialflagsmask, float extend)
 413 #else
 414 trace_t SV_TraceBox(const vec3_t start, const vec3_t mins, const vec3_t maxs, const vec3_t end, int type, prvm_edict_t *passedict, int hitsupercontentsmask, int skipsupercontentsmask, int skipmaterialflagsmask, float extend)
 415 #endif
 416 {
 417         prvm_prog_t *prog = SVVM_prog;
 418         vec3_t hullmins, hullmaxs;
 419         int i, bodysupercontents;
 420         int passedictprog;
 421         float pitchsign = 1;
 422         qbool pointtrace;
 423         prvm_edict_t *traceowner, *touch;
 424         trace_t trace;
 425         // temporary storage because prvm_vec_t may differ from vec_t
 426         vec3_t touchmins, touchmaxs;
 427         // bounding box of entire move area
 428         vec3_t clipboxmins, clipboxmaxs;
 429         // size of the moving object
 430         vec3_t clipmins, clipmaxs;
 431         // size when clipping against monsters
 432         vec3_t clipmins2, clipmaxs2;
 433         // start and end origin of move
 434         vec3_t clipstart, clipend;
 435         // trace results
 436         trace_t cliptrace;
 437         // matrices to transform into/out of other entity's space
 438         matrix4x4_t matrix, imatrix;
 439         // model of other entity
 440         model_t *model;
 441         // list of entities to test for collisions
 442         int numtouchedicts;
 443         static prvm_edict_t *touchedicts[MAX_EDICTS];
 444         int clipgroup;
 445         if (VectorCompare(mins, maxs))
 446         {
 447                 vec3_t shiftstart, shiftend;
 448                 VectorAdd(start, mins, shiftstart);
 449                 VectorAdd(end, mins, shiftend);
 450                 if (VectorCompare(start, end))
 451                         trace = SV_TracePoint(shiftstart, type, passedict, hitsupercontentsmask, skipsupercontentsmask, skipmaterialflagsmask);
 452                 else
 453                         trace = SV_TraceLine(shiftstart, shiftend, type, passedict, hitsupercontentsmask, skipsupercontentsmask, skipmaterialflagsmask, extend);
 454                 VectorSubtract(trace.endpos, mins, trace.endpos);
 455                 return trace;
 456         }
 457
 458         VectorCopy(start, clipstart);
 459         VectorCopy(end, clipend);
 460         VectorCopy(mins, clipmins);
 461         VectorCopy(maxs, clipmaxs);
 462         VectorCopy(mins, clipmins2);
 463         VectorCopy(maxs, clipmaxs2);
 464 #if COLLISIONPARANOID >= 3
 465         Con_Printf("move(%f %f %f,%f %f %f)", clipstart[0], clipstart[1], clipstart[2], clipend[0], clipend[1], clipend[2]);
 466 #endif
 467
 468         // clip to world
 469         Collision_ClipToWorld(&cliptrace, sv.worldmodel, clipstart, clipmins, clipmaxs, clipend, hitsupercontentsmask, skipsupercontentsmask, skipmaterialflagsmask, extend);
 470         cliptrace.worldstartsolid = cliptrace.bmodelstartsolid = cliptrace.startsolid;
 471         if (cliptrace.startsolid || cliptrace.fraction < 1)
 472                 cliptrace.ent = prog->edicts;
 473         if (type == MOVE_WORLDONLY)
 474                 goto finished;
 475
 476         if (type == MOVE_MISSILE)
 477         {
 478                 // LadyHavoc: modified this, was = -15, now -= 15
 479                 for (i = 0;i < 3;i++)
 480                 {
 481                         clipmins2[i] -= 15;
 482                         clipmaxs2[i] += 15;
 483                 }
 484         }
 485
 486         // get adjusted box for bmodel collisions if the world is q1bsp or hlbsp
 487         if (sv.worldmodel && sv.worldmodel->brush.RoundUpToHullSize)
 488                 sv.worldmodel->brush.RoundUpToHullSize(sv.worldmodel, clipmins, clipmaxs, hullmins, hullmaxs);
 489         else
 490         {
 491                 VectorCopy(clipmins, hullmins);
 492                 VectorCopy(clipmaxs, hullmaxs);
 493         }
 494
 495         // create the bounding box of the entire move
 496         for (i = 0;i < 3;i++)
 497         {
 498                 clipboxmins[i] = min(clipstart[i], cliptrace.endpos[i]) + min(hullmins[i], clipmins2[i]) - 1;
 499                 clipboxmaxs[i] = max(clipstart[i], cliptrace.endpos[i]) + max(hullmaxs[i], clipmaxs2[i]) + 1;
 500         }
 501
 502         // debug override to test against everything
 503         if (sv_debugmove.integer)
 504         {
 505                 clipboxmins[0] = clipboxmins[1] = clipboxmins[2] = (vec_t)-999999999;
 506                 clipboxmaxs[0] = clipboxmaxs[1] = clipboxmaxs[2] =  (vec_t)999999999;
 507         }
 508
 509         // if the passedict is world, make it NULL (to avoid two checks each time)
 510         if (passedict == prog->edicts)
 511                 passedict = NULL;
 512         // precalculate prog value for passedict for comparisons
 513         passedictprog = PRVM_EDICT_TO_PROG(passedict);
 514         // figure out whether this is a point trace for comparisons
 515         pointtrace = VectorCompare(clipmins, clipmaxs);
 516         // precalculate passedict's owner edict pointer for comparisons
 517         traceowner = passedict ? PRVM_PROG_TO_EDICT(PRVM_serveredictedict(passedict, owner)) : 0;
 518
 519         clipgroup = passedict ? (int)PRVM_serveredictfloat(passedict, clipgroup) : 0;
 520
 521         // clip to entities
 522         // because this uses World_EntitiestoBox, we know all entity boxes overlap
 523         // the clip region, so we can skip culling checks in the loop below
 524         numtouchedicts = SV_EntitiesInBox(clipboxmins, clipboxmaxs, MAX_EDICTS, touchedicts);
 525         if (numtouchedicts > MAX_EDICTS)
 526         {
 527                 // this never happens
 528                 Con_Printf("SV_EntitiesInBox returned %i edicts, max was %i\n", numtouchedicts, MAX_EDICTS);
 529                 numtouchedicts = MAX_EDICTS;
 530         }
 531         for (i = 0;i < numtouchedicts;i++)
 532         {
 533                 touch = touchedicts[i];
 534
 535                 if (PRVM_serveredictfloat(touch, solid) < SOLID_BBOX)
 536                         continue;
 537                 if (type == MOVE_NOMONSTERS && PRVM_serveredictfloat(touch, solid) != SOLID_BSP)
 538                         continue;
 539
 540                 if (passedict)
 541                 {
 542                         // don't clip against self
 543                         if (passedict == touch)
 544                                 continue;
 545                         // don't clip owned entities against owner
 546                         if (traceowner == touch)
 547                                 continue;
 548                         // don't clip owner against owned entities
 549                         if (passedictprog == PRVM_serveredictedict(touch, owner))
 550                                 continue;
 551                         // don't clip against any entities in the same clipgroup (DP_RM_CLIPGROUP)
 552                         if (clipgroup && clipgroup == (int)PRVM_serveredictfloat(touch, clipgroup))
 553                                 continue;
 554                         // don't clip points against points (they can't collide)
 555                         if (pointtrace && VectorCompare(PRVM_serveredictvector(touch, mins), PRVM_serveredictvector(touch, maxs)) && (type != MOVE_MISSILE || !((int)PRVM_serveredictfloat(touch, flags) & FL_MONSTER)))
 556                                 continue;
 557                 }
 558
 559                 bodysupercontents = PRVM_serveredictfloat(touch, solid) == SOLID_CORPSE ? SUPERCONTENTS_CORPSE : SUPERCONTENTS_BODY;
 560
 561                 // might interact, so do an exact clip
 562                 model = NULL;
 563                 if ((int) PRVM_serveredictfloat(touch, solid) == SOLID_BSP || type == MOVE_HITMODEL)
 564                 {
 565                         model = SV_GetModelFromEdict(touch);
 566                         pitchsign = SV_GetPitchSign(prog, touch);
 567                 }
 568                 if (model)
 569                         Matrix4x4_CreateFromQuakeEntity(&matrix, PRVM_serveredictvector(touch, origin)[0], PRVM_serveredictvector(touch, origin)[1], PRVM_serveredictvector(touch, origin)[2], pitchsign * PRVM_serveredictvector(touch, angles)[0], PRVM_serveredictvector(touch, angles)[1], PRVM_serveredictvector(touch, angles)[2], 1);
 570                 else
 571                         Matrix4x4_CreateTranslate(&matrix, PRVM_serveredictvector(touch, origin)[0], PRVM_serveredictvector(touch, origin)[1], PRVM_serveredictvector(touch, origin)[2]);
 572                 Matrix4x4_Invert_Simple(&imatrix, &matrix);
 573                 VM_GenerateFrameGroupBlend(prog, touch->priv.server->framegroupblend, touch);
 574                 VM_FrameBlendFromFrameGroupBlend(touch->priv.server->frameblend, touch->priv.server->framegroupblend, model, sv.time);
 575                 VM_UpdateEdictSkeleton(prog, touch, model, touch->priv.server->frameblend);
 576                 VectorCopy(PRVM_serveredictvector(touch, mins), touchmins);
 577                 VectorCopy(PRVM_serveredictvector(touch, maxs), touchmaxs);
 578                 if (type == MOVE_MISSILE && (int)PRVM_serveredictfloat(touch, flags) & FL_MONSTER)
 579                         Collision_ClipToGenericEntity(&trace, model, touch->priv.server->frameblend, &touch->priv.server->skeleton, touchmins, touchmaxs, bodysupercontents, &matrix, &imatrix, clipstart, clipmins2, clipmaxs2, clipend, hitsupercontentsmask, skipsupercontentsmask, skipmaterialflagsmask, extend);
 580                 else
 581                         Collision_ClipToGenericEntity(&trace, model, touch->priv.server->frameblend, &touch->priv.server->skeleton, touchmins, touchmaxs, bodysupercontents, &matrix, &imatrix, clipstart, clipmins, clipmaxs, clipend, hitsupercontentsmask, skipsupercontentsmask, skipmaterialflagsmask, extend);
 582
 583                 Collision_CombineTraces(&cliptrace, &trace, (void *)touch, PRVM_serveredictfloat(touch, solid) == SOLID_BSP);
 584         }
 585
 586 finished:
 587         return cliptrace;
 588 }
 589
 590 #if COLLISIONPARANOID >= 1
 591 trace_t SV_TraceBox(const vec3_t start, const vec3_t mins, const vec3_t maxs, const vec3_t end, int type, prvm_edict_t *passedict, int hitsupercontentsmask, int skipsupercontentsmask, int skipmaterialflagsmask, float extend)
 592 {
 593         prvm_prog_t *prog = SVVM_prog;
 594         int endstuck;
 595         trace_t trace;
 596         vec3_t temp;
 597         trace = SV_TraceBox_(start, mins, maxs, end, type, passedict, hitsupercontentsmask, skipsupercontentsmask, skipmaterialflagsmask, extend);
 598         if (passedict)
 599         {
 600                 VectorCopy(trace.endpos, temp);
 601                 endstuck = SV_TraceBox_(temp, mins, maxs, temp, type, passedict, hitsupercontentsmask, skipsupercontentsmask, skipmaterialflagsmask, extend).startsolid;
 602 #if COLLISIONPARANOID < 3
 603                 if (trace.startsolid || endstuck)
 604 #endif
 605                         Con_Printf("%s{e%i:%f %f %f:%f %f %f:%f:%f %f %f%s%s}\n", (trace.startsolid || endstuck) ? "^3" : "", passedict ? (int)(passedict - prog->edicts) : -1, PRVM_serveredictvector(passedict, origin)[0], PRVM_serveredictvector(passedict, origin)[1], PRVM_serveredictvector(passedict, origin)[2], end[0] - PRVM_serveredictvector(passedict, origin)[0], end[1] - PRVM_serveredictvector(passedict, origin)[1], end[2] - PRVM_serveredictvector(passedict, origin)[2], trace.fraction, trace.endpos[0] - PRVM_serveredictvector(passedict, origin)[0], trace.endpos[1] - PRVM_serveredictvector(passedict, origin)[1], trace.endpos[2] - PRVM_serveredictvector(passedict, origin)[2], trace.startsolid ? " startstuck" : "", endstuck ? " endstuck" : "");
 606         }
 607         return trace;
 608 }
 609 #endif
 610
 611 int SV_PointSuperContents(const vec3_t point)
 612 {
 613         prvm_prog_t *prog = SVVM_prog;
 614         int supercontents = 0;
 615         int i;
 616         prvm_edict_t *touch;
 617         vec3_t transformed;
 618         // matrices to transform into/out of other entity's space
 619         matrix4x4_t matrix, imatrix;
 620         // model of other entity
 621         model_t *model;
 622         int frame;
 623         // list of entities to test for collisions
 624         int numtouchedicts;
 625         static prvm_edict_t *touchedicts[MAX_EDICTS];
 626
 627         // get world supercontents at this point
 628         if (sv.worldmodel && sv.worldmodel->PointSuperContents)
 629                 supercontents = sv.worldmodel->PointSuperContents(sv.worldmodel, 0, point);
 630
 631         // if sv_gameplayfix_swiminbmodels is off we're done
 632         if (!sv_gameplayfix_swiminbmodels.integer)
 633                 return supercontents;
 634
 635         // get list of entities at this point
 636         numtouchedicts = SV_EntitiesInBox(point, point, MAX_EDICTS, touchedicts);
 637         if (numtouchedicts > MAX_EDICTS)
 638         {
 639                 // this never happens
 640                 Con_Printf("SV_EntitiesInBox returned %i edicts, max was %i\n", numtouchedicts, MAX_EDICTS);
 641                 numtouchedicts = MAX_EDICTS;
 642         }
 643         for (i = 0;i < numtouchedicts;i++)
 644         {
 645                 touch = touchedicts[i];
 646
 647                 // we only care about SOLID_BSP for pointcontents
 648                 if (PRVM_serveredictfloat(touch, solid) != SOLID_BSP)
 649                         continue;
 650
 651                 // might interact, so do an exact clip
 652                 model = SV_GetModelFromEdict(touch);
 653                 if (!model || !model->PointSuperContents)
 654                         continue;
 655                 Matrix4x4_CreateFromQuakeEntity(&matrix, PRVM_serveredictvector(touch, origin)[0], PRVM_serveredictvector(touch, origin)[1], PRVM_serveredictvector(touch, origin)[2], PRVM_serveredictvector(touch, angles)[0], PRVM_serveredictvector(touch, angles)[1], PRVM_serveredictvector(touch, angles)[2], 1);
 656                 Matrix4x4_Invert_Simple(&imatrix, &matrix);
 657                 Matrix4x4_Transform(&imatrix, point, transformed);
 658                 frame = (int)PRVM_serveredictfloat(touch, frame);
 659                 supercontents |= model->PointSuperContents(model, bound(0, frame, (model->numframes - 1)), transformed);
 660         }
 661
 662         return supercontents;
 663 }
 664
 665 /*
 666 ===============================================================================
 667
 668 Linking entities into the world culling system
 669
 670 ===============================================================================
 671 */
 672
 673 int SV_EntitiesInBox(const vec3_t mins, const vec3_t maxs, int maxedicts, prvm_edict_t **resultedicts)
 674 {
 675         prvm_prog_t *prog = SVVM_prog;
 676         vec3_t paddedmins, paddedmaxs;
 677         if (maxedicts < 1 || resultedicts == NULL)
 678                 return 0;
 679         // LadyHavoc: discovered this actually causes its own bugs (dm6 teleporters being too close to info_teleport_destination)
 680         //VectorSet(paddedmins, mins[0] - 10, mins[1] - 10, mins[2] - 1);
 681         //VectorSet(paddedmaxs, maxs[0] + 10, maxs[1] + 10, maxs[2] + 1);
 682         VectorCopy(mins, paddedmins);
 683         VectorCopy(maxs, paddedmaxs);
 684         if (sv_areadebug.integer)
 685         {
 686                 int numresultedicts = 0;
 687                 int edictindex;
 688                 prvm_edict_t *ed;
 689                 for (edictindex = 1;edictindex < prog->num_edicts;edictindex++)
 690                 {
 691                         ed = PRVM_EDICT_NUM(edictindex);
 692                         if (!ed->free && BoxesOverlap(PRVM_serveredictvector(ed, absmin), PRVM_serveredictvector(ed, absmax), paddedmins, paddedmaxs))
 693                         {
 694                                 resultedicts[numresultedicts++] = ed;
 695                                 if (numresultedicts == maxedicts)
 696                                         break;
 697                         }
 698                 }
 699                 return numresultedicts;
 700         }
 701         else
 702                 return World_EntitiesInBox(&sv.world, paddedmins, paddedmaxs, maxedicts, resultedicts);
 703 }
 704
 705 void SV_LinkEdict_TouchAreaGrid_Call(prvm_edict_t *touch, prvm_edict_t *ent)
 706 {
 707         prvm_prog_t *prog = SVVM_prog;
 708         PRVM_serverglobaledict(self) = PRVM_EDICT_TO_PROG(touch);
 709         PRVM_serverglobaledict(other) = PRVM_EDICT_TO_PROG(ent);
 710         PRVM_serverglobalfloat(time) = sv.time;
 711         PRVM_serverglobalfloat(trace_allsolid) = false;
 712         PRVM_serverglobalfloat(trace_startsolid) = false;
 713         PRVM_serverglobalfloat(trace_fraction) = 1;
 714         PRVM_serverglobalfloat(trace_inwater) = false;
 715         PRVM_serverglobalfloat(trace_inopen) = true;
 716         VectorCopy (PRVM_serveredictvector(touch, origin), PRVM_serverglobalvector(trace_endpos));
 717         VectorSet (PRVM_serverglobalvector(trace_plane_normal), 0, 0, 1);
 718         PRVM_serverglobalfloat(trace_plane_dist) = 0;
 719         PRVM_serverglobaledict(trace_ent) = PRVM_EDICT_TO_PROG(ent);
 720         PRVM_serverglobalfloat(trace_dpstartcontents) = 0;
 721         PRVM_serverglobalfloat(trace_dphitcontents) = 0;
 722         PRVM_serverglobalfloat(trace_dphitq3surfaceflags) = 0;
 723         PRVM_serverglobalstring(trace_dphittexturename) = 0;
 724         prog->ExecuteProgram(prog, PRVM_serveredictfunction(touch, touch), "QC function self.touch is missing");
 725 }
 726
 727 void SV_LinkEdict_TouchAreaGrid(prvm_edict_t *ent)
 728 {
 729         prvm_prog_t *prog = SVVM_prog;
 730         int i, numtouchedicts, old_self, old_other;
 731         prvm_edict_t *touch;
 732         static prvm_edict_t *touchedicts[MAX_EDICTS];
 733
 734         if (ent == prog->edicts)
 735                 return;         // don't add the world
 736
 737         if (ent->free)
 738                 return;
 739
 740         if (PRVM_serveredictfloat(ent, solid) == SOLID_NOT)
 741                 return;
 742
 743         // build a list of edicts to touch, because the link loop can be corrupted
 744         // by IncreaseEdicts called during touch functions
 745         numtouchedicts = SV_EntitiesInBox(ent->priv.server->areamins, ent->priv.server->areamaxs, MAX_EDICTS, touchedicts);
 746         if (numtouchedicts > MAX_EDICTS)
 747         {
 748                 // this never happens
 749                 Con_Printf("SV_EntitiesInBox returned %i edicts, max was %i\n", numtouchedicts, MAX_EDICTS);
 750                 numtouchedicts = MAX_EDICTS;
 751         }
 752
 753         old_self = PRVM_serverglobaledict(self);
 754         old_other = PRVM_serverglobaledict(other);
 755         for (i = 0;i < numtouchedicts;i++)
 756         {
 757                 touch = touchedicts[i];
 758                 if (touch != ent && (int)PRVM_serveredictfloat(touch, solid) == SOLID_TRIGGER && PRVM_serveredictfunction(touch, touch))
 759                 {
 760                         SV_LinkEdict_TouchAreaGrid_Call(touch, ent);
 761                 }
 762         }
 763         PRVM_serverglobaledict(self) = old_self;
 764         PRVM_serverglobaledict(other) = old_other;
 765 }
 766
 767 static void RotateBBox(const vec3_t mins, const vec3_t maxs, const vec3_t angles, vec3_t rotatedmins, vec3_t rotatedmaxs)
 768 {
 769         vec3_t v, u;
 770         matrix4x4_t m;
 771         Matrix4x4_CreateFromQuakeEntity(&m, 0, 0, 0, angles[PITCH], angles[YAW], angles[ROLL], 1.0);
 772
 773         v[0] = mins[0]; v[1] = mins[1]; v[2] = mins[2]; Matrix4x4_Transform(&m, v, u);
 774                 VectorCopy(u, rotatedmins); VectorCopy(u, rotatedmaxs);
 775         v[0] = maxs[0]; v[1] = mins[1]; v[2] = mins[2]; Matrix4x4_Transform(&m, v, u);
 776                 if(rotatedmins[0] > u[0]) { rotatedmins[0] = u[0]; } if(rotatedmins[1] > u[1]) { rotatedmins[1] = u[1]; } if(rotatedmins[2] > u[2]) { rotatedmins[2] = u[2]; }
 777                 if(rotatedmaxs[0] < u[0]) { rotatedmaxs[0] = u[0]; } if(rotatedmaxs[1] < u[1]) { rotatedmaxs[1] = u[1]; } if(rotatedmaxs[2] < u[2]) { rotatedmaxs[2] = u[2]; }
 778         v[0] = mins[0]; v[1] = maxs[1]; v[2] = mins[2]; Matrix4x4_Transform(&m, v, u);
 779                 if(rotatedmins[0] > u[0]) { rotatedmins[0] = u[0]; } if(rotatedmins[1] > u[1]) { rotatedmins[1] = u[1]; } if(rotatedmins[2] > u[2]) { rotatedmins[2] = u[2]; }
 780                 if(rotatedmaxs[0] < u[0]) { rotatedmaxs[0] = u[0]; } if(rotatedmaxs[1] < u[1]) { rotatedmaxs[1] = u[1]; } if(rotatedmaxs[2] < u[2]) { rotatedmaxs[2] = u[2]; }
 781         v[0] = maxs[0]; v[1] = maxs[1]; v[2] = mins[2]; Matrix4x4_Transform(&m, v, u);
 782                 if(rotatedmins[0] > u[0]) { rotatedmins[0] = u[0]; } if(rotatedmins[1] > u[1]) { rotatedmins[1] = u[1]; } if(rotatedmins[2] > u[2]) { rotatedmins[2] = u[2]; }
 783                 if(rotatedmaxs[0] < u[0]) { rotatedmaxs[0] = u[0]; } if(rotatedmaxs[1] < u[1]) { rotatedmaxs[1] = u[1]; } if(rotatedmaxs[2] < u[2]) { rotatedmaxs[2] = u[2]; }
 784         v[0] = mins[0]; v[1] = mins[1]; v[2] = maxs[2]; Matrix4x4_Transform(&m, v, u);
 785                 if(rotatedmins[0] > u[0]) { rotatedmins[0] = u[0]; } if(rotatedmins[1] > u[1]) { rotatedmins[1] = u[1]; } if(rotatedmins[2] > u[2]) { rotatedmins[2] = u[2]; }
 786                 if(rotatedmaxs[0] < u[0]) { rotatedmaxs[0] = u[0]; } if(rotatedmaxs[1] < u[1]) { rotatedmaxs[1] = u[1]; } if(rotatedmaxs[2] < u[2]) { rotatedmaxs[2] = u[2]; }
 787         v[0] = maxs[0]; v[1] = mins[1]; v[2] = maxs[2]; Matrix4x4_Transform(&m, v, u);
 788                 if(rotatedmins[0] > u[0]) { rotatedmins[0] = u[0]; } if(rotatedmins[1] > u[1]) { rotatedmins[1] = u[1]; } if(rotatedmins[2] > u[2]) { rotatedmins[2] = u[2]; }
 789                 if(rotatedmaxs[0] < u[0]) { rotatedmaxs[0] = u[0]; } if(rotatedmaxs[1] < u[1]) { rotatedmaxs[1] = u[1]; } if(rotatedmaxs[2] < u[2]) { rotatedmaxs[2] = u[2]; }
 790         v[0] = mins[0]; v[1] = maxs[1]; v[2] = maxs[2]; Matrix4x4_Transform(&m, v, u);
 791                 if(rotatedmins[0] > u[0]) { rotatedmins[0] = u[0]; } if(rotatedmins[1] > u[1]) { rotatedmins[1] = u[1]; } if(rotatedmins[2] > u[2]) { rotatedmins[2] = u[2]; }
 792                 if(rotatedmaxs[0] < u[0]) { rotatedmaxs[0] = u[0]; } if(rotatedmaxs[1] < u[1]) { rotatedmaxs[1] = u[1]; } if(rotatedmaxs[2] < u[2]) { rotatedmaxs[2] = u[2]; }
 793         v[0] = maxs[0]; v[1] = maxs[1]; v[2] = maxs[2]; Matrix4x4_Transform(&m, v, u);
 794                 if(rotatedmins[0] > u[0]) { rotatedmins[0] = u[0]; } if(rotatedmins[1] > u[1]) { rotatedmins[1] = u[1]; } if(rotatedmins[2] > u[2]) { rotatedmins[2] = u[2]; }
 795                 if(rotatedmaxs[0] < u[0]) { rotatedmaxs[0] = u[0]; } if(rotatedmaxs[1] < u[1]) { rotatedmaxs[1] = u[1]; } if(rotatedmaxs[2] < u[2]) { rotatedmaxs[2] = u[2]; }
 796 }
 797
 798 /*
 799 ===============
 800 SV_LinkEdict
 801
 802 ===============
 803 */
 804 void SV_LinkEdict (prvm_edict_t *ent)
 805 {
 806         prvm_prog_t *prog = SVVM_prog;
 807         model_t *model;
 808         vec3_t mins, maxs, entmins, entmaxs, entangles;
 809         int modelindex;
 810
 811         if (ent == prog->edicts)
 812                 return;         // don't add the world
 813
 814         if (ent->free)
 815                 return;
 816
 817         modelindex = (int)PRVM_serveredictfloat(ent, modelindex);
 818         if (modelindex < 0 || modelindex >= MAX_MODELS)
 819         {
 820                 Con_Printf("edict %i: SOLID_BSP with invalid modelindex!\n", PRVM_NUM_FOR_EDICT(ent));
 821                 modelindex = 0;
 822         }
 823         model = SV_GetModelByIndex(modelindex);
 824
 825         VM_GenerateFrameGroupBlend(prog, ent->priv.server->framegroupblend, ent);
 826         VM_FrameBlendFromFrameGroupBlend(ent->priv.server->frameblend, ent->priv.server->framegroupblend, model, sv.time);
 827         VM_UpdateEdictSkeleton(prog, ent, model, ent->priv.server->frameblend);
 828
 829 // set the abs box
 830
 831         if (PRVM_serveredictfloat(ent, movetype) == MOVETYPE_PHYSICS)
 832         {
 833                 // TODO maybe should do this for rotating SOLID_BSP too? Would behave better with rotating doors
 834                 // TODO special handling for spheres?
 835                 VectorCopy(PRVM_serveredictvector(ent, mins), entmins);
 836                 VectorCopy(PRVM_serveredictvector(ent, maxs), entmaxs);
 837                 VectorCopy(PRVM_serveredictvector(ent, angles), entangles);
 838                 RotateBBox(entmins, entmaxs, entangles, mins, maxs);
 839                 VectorAdd(PRVM_serveredictvector(ent, origin), mins, mins);
 840                 VectorAdd(PRVM_serveredictvector(ent, origin), maxs, maxs);
 841         }
 842         else if (PRVM_serveredictfloat(ent, solid) == SOLID_BSP)
 843         {
 844                 if (model != NULL)
 845                 {
 846                         if (!model->TraceBox)
 847                                 Con_DPrintf("edict %i: SOLID_BSP with non-collidable model\n", PRVM_NUM_FOR_EDICT(ent));
 848
 849                         if (PRVM_serveredictvector(ent, angles)[0] || PRVM_serveredictvector(ent, angles)[2] || PRVM_serveredictvector(ent, avelocity)[0] || PRVM_serveredictvector(ent, avelocity)[2])
 850                         {
 851                                 VectorAdd(PRVM_serveredictvector(ent, origin), model->rotatedmins, mins);
 852                                 VectorAdd(PRVM_serveredictvector(ent, origin), model->rotatedmaxs, maxs);
 853                         }
 854                         else if (PRVM_serveredictvector(ent, angles)[1] || PRVM_serveredictvector(ent, avelocity)[1])
 855                         {
 856                                 VectorAdd(PRVM_serveredictvector(ent, origin), model->yawmins, mins);
 857                                 VectorAdd(PRVM_serveredictvector(ent, origin), model->yawmaxs, maxs);
 858                         }
 859                         else
 860                         {
 861                                 VectorAdd(PRVM_serveredictvector(ent, origin), model->normalmins, mins);
 862                                 VectorAdd(PRVM_serveredictvector(ent, origin), model->normalmaxs, maxs);
 863                         }
 864                 }
 865                 else
 866                 {
 867                         // SOLID_BSP with no model is valid, mainly because some QC setup code does so temporarily
 868                         VectorAdd(PRVM_serveredictvector(ent, origin), PRVM_serveredictvector(ent, mins), mins);
 869                         VectorAdd(PRVM_serveredictvector(ent, origin), PRVM_serveredictvector(ent, maxs), maxs);
 870                 }
 871         }
 872         else
 873         {
 874                 VectorAdd(PRVM_serveredictvector(ent, origin), PRVM_serveredictvector(ent, mins), mins);
 875                 VectorAdd(PRVM_serveredictvector(ent, origin), PRVM_serveredictvector(ent, maxs), maxs);
 876         }
 877
 878         if (sv_legacy_bbox_expand.integer)
 879         {
 880                 if ((int)PRVM_serveredictfloat(ent, flags) & FL_ITEM)
 881                 {
 882                         // to make items easier to pick up and allow them to be grabbed off
 883                         // of shelves, the abs sizes are expanded
 884                         mins[0] -= 15;
 885                         mins[1] -= 15;
 886                         mins[2] -= 1;
 887                         maxs[0] += 15;
 888                         maxs[1] += 15;
 889                         maxs[2] += 1;
 890                 }
 891                 else
 892                 {
 893                         // because movement is clipped an epsilon away from an actual edge,
 894                         // we must fully check even when bounding boxes don't quite touch
 895                         mins[0] -= 1;
 896                         mins[1] -= 1;
 897                         mins[2] -= 1;
 898                         maxs[0] += 1;
 899                         maxs[1] += 1;
 900                         maxs[2] += 1;
 901                 }
 902         }
 903
 904         VectorCopy(mins, PRVM_serveredictvector(ent, absmin));
 905         VectorCopy(maxs, PRVM_serveredictvector(ent, absmax));
 906
 907         World_LinkEdict(&sv.world, ent, mins, maxs, sv_areagrid_link_SOLID_NOT.integer);
 908 }
 909
 910 /*
 911 ===============================================================================
 912
 913 Utility functions
 914
 915 ===============================================================================
 916 */
 917
 918 /*
 919 ============
 920 SV_TestEntityPosition
 921
 922 returns true if the entity is in solid currently
 923 ============
 924 */
 925 static int SV_TestEntityPosition (prvm_edict_t *ent, vec3_t offset)
 926 {
 927         prvm_prog_t *prog = SVVM_prog;
 928         int hitsupercontentsmask = SV_GenericHitSuperContentsMask(ent);
 929         int skipsupercontentsmask = 0;
 930         int skipmaterialflagsmask = 0;
 931         vec3_t org, entorigin, entmins, entmaxs;
 932         trace_t trace;
 933         VectorAdd(PRVM_serveredictvector(ent, origin), offset, org);
 934         VectorCopy(PRVM_serveredictvector(ent, origin), entorigin);
 935         VectorCopy(PRVM_serveredictvector(ent, mins), entmins);
 936         VectorCopy(PRVM_serveredictvector(ent, maxs), entmaxs);
 937         trace = SV_TraceBox(org, entmins, entmaxs, entorigin, ((PRVM_serveredictfloat(ent, movetype) == MOVETYPE_FLY_WORLDONLY) ? MOVE_WORLDONLY : MOVE_NOMONSTERS), ent, hitsupercontentsmask, skipsupercontentsmask, skipmaterialflagsmask, collision_extendmovelength.value);
 938         if (trace.startsupercontents & hitsupercontentsmask)
 939                 return true;
 940         else
 941         {
 942                 if (sv.worldmodel->brushq1.numclipnodes && !VectorCompare(PRVM_serveredictvector(ent, mins), PRVM_serveredictvector(ent, maxs)))
 943                 {
 944                         // q1bsp/hlbsp use hulls and if the entity does not exactly match
 945                         // a hull size it is incorrectly tested, so this code tries to
 946                         // 'fix' it slightly...
 947                         // FIXME: this breaks entities larger than the hull size
 948                         int i;
 949                         vec3_t v, m1, m2, s;
 950                         VectorAdd(org, entmins, m1);
 951                         VectorAdd(org, entmaxs, m2);
 952                         VectorSubtract(m2, m1, s);
 953 #define EPSILON (1.0f / 32.0f)
 954                         if (s[0] >= EPSILON*2) {m1[0] += EPSILON;m2[0] -= EPSILON;}
 955                         if (s[1] >= EPSILON*2) {m1[1] += EPSILON;m2[1] -= EPSILON;}
 956                         if (s[2] >= EPSILON*2) {m1[2] += EPSILON;m2[2] -= EPSILON;}
 957                         for (i = 0;i < 8;i++)
 958                         {
 959                                 v[0] = (i & 1) ? m2[0] : m1[0];
 960                                 v[1] = (i & 2) ? m2[1] : m1[1];
 961                                 v[2] = (i & 4) ? m2[2] : m1[2];
 962                                 if (SV_PointSuperContents(v) & hitsupercontentsmask)
 963                                         return true;
 964                         }
 965                 }
 966         }
 967         // if the trace found a better position for the entity, move it there
 968         if (VectorDistance2(trace.endpos, PRVM_serveredictvector(ent, origin)) >= 0.0001)
 969         {
 970 #if 0
 971                 // please switch back to this code when trace.endpos sometimes being in solid bug is fixed
 972                 VectorCopy(trace.endpos, PRVM_serveredictvector(ent, origin));
 973 #else
 974                 // verify if the endpos is REALLY outside solid
 975                 VectorCopy(trace.endpos, org);
 976                 trace = SV_TraceBox(org, entmins, entmaxs, org, MOVE_NOMONSTERS, ent, hitsupercontentsmask, skipsupercontentsmask, skipmaterialflagsmask, collision_extendmovelength.value);
 977                 if(trace.startsolid)
 978                         Con_Printf("SV_TestEntityPosition: trace.endpos detected to be in solid. NOT using it.\n");
 979                 else
 980                         VectorCopy(org, PRVM_serveredictvector(ent, origin));
 981 #endif
 982         }
 983         return false;
 984 }
 985
 986 // DRESK - Support for Entity Contents Transition Event
 987 /*
 988 ================
 989 SV_CheckContentsTransition
 990
 991 returns true if entity had a valid contentstransition function call
 992 ================
 993 */
 994 static int SV_CheckContentsTransition(prvm_edict_t *ent, const int nContents)
 995 {
 996         prvm_prog_t *prog = SVVM_prog;
 997         int bValidFunctionCall;
 998
 999         // Default Valid Function Call to False
1000         bValidFunctionCall = false;
1001
1002         if(PRVM_serveredictfloat(ent, watertype) != nContents)
1003         { // Changed Contents
1004                 // Acquire Contents Transition Function from QC
1005                 if(PRVM_serveredictfunction(ent, contentstransition))
1006                 { // Valid Function; Execute
1007                         // Assign Valid Function
1008                         bValidFunctionCall = true;
1009                         // Prepare Parameters (Original Contents, New Contents)
1010                         // Original Contents
1011                         PRVM_G_FLOAT(OFS_PARM0) = PRVM_serveredictfloat(ent, watertype);
1012                         // New Contents
1013                         PRVM_G_FLOAT(OFS_PARM1) = nContents;
1014                         // Assign Self
1015                         PRVM_serverglobaledict(self) = PRVM_EDICT_TO_PROG(ent);
1016                         // Set Time
1017                         PRVM_serverglobalfloat(time) = sv.time;
1018                         // Execute VM Function
1019                         prog->ExecuteProgram(prog, PRVM_serveredictfunction(ent, contentstransition), "contentstransition: NULL function");
1020                 }
1021         }
1022
1023         // Return if Function Call was Valid
1024         return bValidFunctionCall;
1025 }
1026
1027
1028 /*
1029 ================
1030 SV_CheckVelocity
1031 ================
1032 */
1033 void SV_CheckVelocity (prvm_edict_t *ent)
1034 {
1035         prvm_prog_t *prog = SVVM_prog;
1036         int i;
1037         float wishspeed;
1038
1039 //
1040 // bound velocity
1041 //
1042         for (i=0 ; i<3 ; i++)
1043         {
1044                 if (PRVM_IS_NAN(PRVM_serveredictvector(ent, velocity)[i]))
1045                 {
1046                         Con_Printf("Got a NaN velocity on entity #%i (%s)\n", PRVM_NUM_FOR_EDICT(ent), PRVM_GetString(prog, PRVM_serveredictstring(ent, classname)));
1047                         PRVM_serveredictvector(ent, velocity)[i] = 0;
1048                 }
1049                 if (PRVM_IS_NAN(PRVM_serveredictvector(ent, origin)[i]))
1050                 {
1051                         Con_Printf("Got a NaN origin on entity #%i (%s)\n", PRVM_NUM_FOR_EDICT(ent), PRVM_GetString(prog, PRVM_serveredictstring(ent, classname)));
1052                         PRVM_serveredictvector(ent, origin)[i] = 0;
1053                 }
1054         }
1055
1056         // LadyHavoc: a hack to ensure that the (rather silly) id1 quakec
1057         // player_run/player_stand1 does not horribly malfunction if the
1058         // velocity becomes a denormalized float
1059         if (VectorLength2(PRVM_serveredictvector(ent, velocity)) < 0.0000001)
1060                 VectorClear(PRVM_serveredictvector(ent, velocity));
1061
1062         // LadyHavoc: max velocity fix, inspired by Maddes's source fixes, but this is faster
1063         wishspeed = DotProduct(PRVM_serveredictvector(ent, velocity), PRVM_serveredictvector(ent, velocity));
1064         if (wishspeed > sv_maxvelocity.value * sv_maxvelocity.value)
1065         {
1066                 wishspeed = sv_maxvelocity.value / sqrt(wishspeed);
1067                 PRVM_serveredictvector(ent, velocity)[0] *= wishspeed;
1068                 PRVM_serveredictvector(ent, velocity)[1] *= wishspeed;
1069                 PRVM_serveredictvector(ent, velocity)[2] *= wishspeed;
1070         }
1071 }
1072
1073 /*
1074 =============
1075 SV_RunThink
1076
1077 Runs thinking code if time.  There is some play in the exact time the think
1078 function will be called, because it is called before any movement is done
1079 in a frame.  Not used for pushmove objects, because they must be exact.
1080 Returns false if the entity removed itself.
1081 =============
1082 */
1083 static qbool SV_RunThink (prvm_edict_t *ent)
1084 {
1085         prvm_prog_t *prog = SVVM_prog;
1086         int iterations;
1087
1088         // don't let things stay in the past.
1089         // it is possible to start that way by a trigger with a local time.
1090         if (PRVM_serveredictfloat(ent, nextthink) <= 0 || PRVM_serveredictfloat(ent, nextthink) > sv.time + sv.frametime)
1091                 return true;
1092
1093         for (iterations = 0;iterations < 128  && !ent->free;iterations++)
1094         {
1095                 PRVM_serverglobalfloat(time) = max(sv.time, PRVM_serveredictfloat(ent, nextthink));
1096                 PRVM_serveredictfloat(ent, nextthink) = 0;
1097                 PRVM_serverglobaledict(self) = PRVM_EDICT_TO_PROG(ent);
1098                 PRVM_serverglobaledict(other) = PRVM_EDICT_TO_PROG(prog->edicts);
1099                 prog->ExecuteProgram(prog, PRVM_serveredictfunction(ent, think), "QC function self.think is missing");
1100                 // mods often set nextthink to time to cause a think every frame,
1101                 // we don't want to loop in that case, so exit if the new nextthink is
1102                 // <= the time the qc was told, also exit if it is past the end of the
1103                 // frame
1104                 if (PRVM_serveredictfloat(ent, nextthink) <= PRVM_serverglobalfloat(time) || PRVM_serveredictfloat(ent, nextthink) > sv.time + sv.frametime || !sv_gameplayfix_multiplethinksperframe.integer)
1105                         break;
1106         }
1107         return !ent->free;
1108 }
1109
1110 /*
1111 ==================
1112 SV_Impact
1113
1114 Two entities have touched, so run their touch functions
1115 ==================
1116 */
1117 static void SV_Impact (prvm_edict_t *e1, trace_t *trace)
1118 {
1119         prvm_prog_t *prog = SVVM_prog;
1120         int restorevm_tempstringsbuf_cursize;
1121         int old_self, old_other;
1122         prvm_edict_t *e2 = (prvm_edict_t *)trace->ent;
1123
1124         old_self = PRVM_serverglobaledict(self);
1125         old_other = PRVM_serverglobaledict(other);
1126         restorevm_tempstringsbuf_cursize = prog->tempstringsbuf.cursize;
1127
1128         VM_SetTraceGlobals(prog, trace);
1129
1130         if (!e1->free && !e2->free && PRVM_serveredictfunction(e1, touch) && PRVM_serveredictfloat(e1, solid) != SOLID_NOT)
1131         {
1132                 PRVM_serverglobalfloat(time) = sv.time;
1133                 PRVM_serverglobaledict(self) = PRVM_EDICT_TO_PROG(e1);
1134                 PRVM_serverglobaledict(other) = PRVM_EDICT_TO_PROG(e2);
1135                 prog->ExecuteProgram(prog, PRVM_serveredictfunction(e1, touch), "QC function self.touch is missing");
1136         }
1137
1138         if (!e1->free && !e2->free && PRVM_serveredictfunction(e2, touch) && PRVM_serveredictfloat(e2, solid) != SOLID_NOT)
1139         {
1140                 PRVM_serverglobalfloat(time) = sv.time;
1141                 PRVM_serverglobaledict(self) = PRVM_EDICT_TO_PROG(e2);
1142                 PRVM_serverglobaledict(other) = PRVM_EDICT_TO_PROG(e1);
1143                 VectorCopy(PRVM_serveredictvector(e2, origin), PRVM_serverglobalvector(trace_endpos));
1144                 VectorNegate(trace->plane.normal, PRVM_serverglobalvector(trace_plane_normal));
1145                 PRVM_serverglobalfloat(trace_plane_dist) = -trace->plane.dist;
1146                 PRVM_serverglobaledict(trace_ent) = PRVM_EDICT_TO_PROG(e1);
1147                 PRVM_serverglobalfloat(trace_dpstartcontents) = 0;
1148                 PRVM_serverglobalfloat(trace_dphitcontents) = 0;
1149                 PRVM_serverglobalfloat(trace_dphitq3surfaceflags) = 0;
1150                 PRVM_serverglobalstring(trace_dphittexturename) = 0;
1151                 prog->ExecuteProgram(prog, PRVM_serveredictfunction(e2, touch), "QC function self.touch is missing");
1152         }
1153
1154         PRVM_serverglobaledict(self) = old_self;
1155         PRVM_serverglobaledict(other) = old_other;
1156         prog->tempstringsbuf.cursize = restorevm_tempstringsbuf_cursize;
1157 }
1158
1159
1160 /*
1161 ==================
1162 ClipVelocity
1163
1164 Slide off of the impacting object
1165 returns the blocked flags (1 = floor, 2 = step / wall)
1166 ==================
1167 */
1168 #define STOP_EPSILON 0.1
1169 static void ClipVelocity (prvm_vec3_t in, vec3_t normal, prvm_vec3_t out, prvm_vec_t overbounce)
1170 {
1171         int i;
1172         float backoff;
1173
1174         backoff = -DotProduct (in, normal) * overbounce;
1175         VectorMA(in, backoff, normal, out);
1176
1177         for (i = 0;i < 3;i++)
1178                 if (out[i] > -STOP_EPSILON && out[i] < STOP_EPSILON)
1179                         out[i] = 0;
1180 }
1181
1182
1183 /*
1184 ============
1185 SV_FlyMove
1186
1187 The basic solid body movement clip that slides along multiple planes
1188 Returns the clipflags if the velocity was modified (hit something solid)
1189 1 = floor
1190 2 = wall / step
1191 4 = dead stop
1192 8 = teleported by touch method
1193 If stepnormal is not NULL, the plane normal of any vertical wall hit will be stored
1194 ============
1195 */
1196 static float SV_Gravity (prvm_edict_t *ent);
1197 static qbool SV_PushEntity (trace_t *trace, prvm_edict_t *ent, vec3_t push, qbool dolink);
1198 #define MAX_CLIP_PLANES 5
1199 static int SV_FlyMove (prvm_edict_t *ent, float time, qbool applygravity, float *stepnormal, int hitsupercontentsmask, int skipsupercontentsmask, int skipmaterialflagsmask, float stepheight)
1200 {
1201         prvm_prog_t *prog = SVVM_prog;
1202         int blocked, bumpcount;
1203         int i, j, numplanes;
1204         float d, time_left, gravity;
1205         vec3_t dir, push, planes[MAX_CLIP_PLANES];
1206         prvm_vec3_t primal_velocity, original_velocity, new_velocity, restore_velocity;
1207 #if 0
1208         vec3_t end;
1209 #endif
1210         trace_t trace;
1211         if (time <= 0)
1212                 return 0;
1213         gravity = 0;
1214
1215         VectorCopy(PRVM_serveredictvector(ent, velocity), restore_velocity);
1216
1217         if(applygravity)
1218         {
1219                 gravity = SV_Gravity(ent);
1220
1221                 if(!sv_gameplayfix_nogravityonground.integer || !((int)PRVM_serveredictfloat(ent, flags) & FL_ONGROUND))
1222                 {
1223                         if (sv_gameplayfix_gravityunaffectedbyticrate.integer)
1224                                 PRVM_serveredictvector(ent, velocity)[2] -= gravity * 0.5f;
1225                         else
1226                                 PRVM_serveredictvector(ent, velocity)[2] -= gravity;
1227                 }
1228         }
1229
1230         blocked = 0;
1231         VectorCopy(PRVM_serveredictvector(ent, velocity), original_velocity);
1232         VectorCopy(PRVM_serveredictvector(ent, velocity), primal_velocity);
1233         numplanes = 0;
1234         time_left = time;
1235         for (bumpcount = 0;bumpcount < MAX_CLIP_PLANES;bumpcount++)
1236         {
1237                 if (!PRVM_serveredictvector(ent, velocity)[0] && !PRVM_serveredictvector(ent, velocity)[1] && !PRVM_serveredictvector(ent, velocity)[2])
1238                         break;
1239
1240                 VectorScale(PRVM_serveredictvector(ent, velocity), time_left, push);
1241                 if(!SV_PushEntity(&trace, ent, push, false))
1242                 {
1243                         // we got teleported by a touch function
1244                         // let's abort the move
1245                         blocked |= 8;
1246                         break;
1247                 }
1248
1249                 // this code is used by MOVETYPE_WALK and MOVETYPE_STEP and SV_UnstickEntity
1250                 // abort move if we're stuck in the world (and didn't make it out)
1251                 if (trace.worldstartsolid && trace.allsolid)
1252                 {
1253                         VectorCopy(restore_velocity, PRVM_serveredictvector(ent, velocity));
1254                         return 3;
1255                 }
1256
1257                 if (trace.fraction == 1)
1258                         break;
1259
1260                 time_left *= 1 - trace.fraction;
1261
1262                 if (trace.plane.normal[2])
1263                 {
1264                         if (trace.plane.normal[2] > 0.7)
1265                         {
1266                                 // floor
1267                                 blocked |= 1;
1268
1269                                 if (!trace.ent)
1270                                 {
1271                                         Con_Printf ("SV_FlyMove: !trace.ent");
1272                                         trace.ent = prog->edicts;
1273                                 }
1274
1275                                 PRVM_serveredictfloat(ent, flags) = (int)PRVM_serveredictfloat(ent, flags) | FL_ONGROUND;
1276                                 PRVM_serveredictedict(ent, groundentity) = PRVM_EDICT_TO_PROG(trace.ent);
1277                         }
1278                 }
1279                 else if (stepheight)
1280                 {
1281                         // step - handle it immediately
1282                         vec3_t org;
1283                         vec3_t steppush;
1284                         trace_t steptrace;
1285                         trace_t steptrace2;
1286                         trace_t steptrace3;
1287                         //Con_Printf("step %f %f %f : ", PRVM_serveredictvector(ent, origin)[0], PRVM_serveredictvector(ent, origin)[1], PRVM_serveredictvector(ent, origin)[2]);
1288                         VectorSet(steppush, 0, 0, stepheight);
1289                         VectorScale(PRVM_serveredictvector(ent, velocity), time_left, push);
1290                         VectorCopy(PRVM_serveredictvector(ent, origin), org);
1291                         if(!SV_PushEntity(&steptrace, ent, steppush, false))
1292                         {
1293                                 blocked |= 8;
1294                                 break;
1295                         }
1296                         //Con_Printf("%f %f %f : ", PRVM_serveredictvector(ent, origin)[0], PRVM_serveredictvector(ent, origin)[1], PRVM_serveredictvector(ent, origin)[2]);
1297                         if(!SV_PushEntity(&steptrace2, ent, push, false))
1298                         {
1299                                 blocked |= 8;
1300                                 break;
1301                         }
1302                         //Con_Printf("%f %f %f : ", PRVM_serveredictvector(ent, origin)[0], PRVM_serveredictvector(ent, origin)[1], PRVM_serveredictvector(ent, origin)[2]);
1303                         VectorSet(steppush, 0, 0, org[2] - PRVM_serveredictvector(ent, origin)[2]);
1304                         if(!SV_PushEntity(&steptrace3, ent, steppush, false))
1305                         {
1306                                 blocked |= 8;
1307                                 break;
1308                         }
1309                         //Con_Printf("%f %f %f : ", PRVM_serveredictvector(ent, origin)[0], PRVM_serveredictvector(ent, origin)[1], PRVM_serveredictvector(ent, origin)[2]);
1310                         // accept the new position if it made some progress...
1311                         // previously this checked if absolute distance >= 0.03125 which made stepping up unreliable
1312                         if (PRVM_serveredictvector(ent, origin)[0] - org[0] || PRVM_serveredictvector(ent, origin)[1] - org[1])
1313                         {
1314                                 //Con_Printf("accepted (delta %f %f %f)\n", PRVM_serveredictvector(ent, origin)[0] - org[0], PRVM_serveredictvector(ent, origin)[1] - org[1], PRVM_serveredictvector(ent, origin)[2] - org[2]);
1315                                 trace = steptrace2;
1316                                 VectorCopy(PRVM_serveredictvector(ent, origin), trace.endpos);
1317                                 time_left *= 1 - trace.fraction;
1318                                 numplanes = 0;
1319                                 continue;
1320                         }
1321                         else
1322                         {
1323                                 //Con_Printf("REJECTED (delta %f %f %f)\n", PRVM_serveredictvector(ent, origin)[0] - org[0], PRVM_serveredictvector(ent, origin)[1] - org[1], PRVM_serveredictvector(ent, origin)[2] - org[2]);
1324                                 VectorCopy(org, PRVM_serveredictvector(ent, origin));
1325                         }
1326                 }
1327                 else
1328                 {
1329                         // step - return it to caller
1330                         blocked |= 2;
1331                         // save the trace for player extrafriction
1332                         if (stepnormal)
1333                                 VectorCopy(trace.plane.normal, stepnormal);
1334                 }
1335                 if (trace.fraction >= 0.001)
1336                 {
1337                         // actually covered some distance
1338                         VectorCopy(PRVM_serveredictvector(ent, velocity), original_velocity);
1339                         numplanes = 0;
1340                 }
1341
1342                 // clipped to another plane
1343                 if (numplanes >= MAX_CLIP_PLANES)
1344                 {
1345                         // this shouldn't really happen
1346                         VectorClear(PRVM_serveredictvector(ent, velocity));
1347                         blocked = 3;
1348                         break;
1349                 }
1350
1351                 /*
1352                 for (i = 0;i < numplanes;i++)
1353                         if (DotProduct(trace.plane.normal, planes[i]) > 0.99)
1354                                 break;
1355                 if (i < numplanes)
1356                 {
1357                         VectorAdd(PRVM_serveredictvector(ent, velocity), trace.plane.normal, PRVM_serveredictvector(ent, velocity));
1358                         continue;
1359                 }
1360                 */
1361
1362                 VectorCopy(trace.plane.normal, planes[numplanes]);
1363                 numplanes++;
1364
1365                 // modify original_velocity so it parallels all of the clip planes
1366                 for (i = 0;i < numplanes;i++)
1367                 {
1368                         ClipVelocity(original_velocity, planes[i], new_velocity, 1);
1369                         for (j = 0;j < numplanes;j++)
1370                         {
1371                                 if (j != i)
1372                                 {
1373                                         // not ok
1374                                         if (DotProduct(new_velocity, planes[j]) < 0)
1375                                                 break;
1376                                 }
1377                         }
1378                         if (j == numplanes)
1379                                 break;
1380                 }
1381
1382                 if (i != numplanes)
1383                 {
1384                         // go along this plane
1385                         VectorCopy(new_velocity, PRVM_serveredictvector(ent, velocity));
1386                 }
1387                 else
1388                 {
1389                         // go along the crease
1390                         if (numplanes != 2)
1391                         {
1392                                 VectorClear(PRVM_serveredictvector(ent, velocity));
1393                                 blocked = 7;
1394                                 break;
1395                         }
1396                         CrossProduct(planes[0], planes[1], dir);
1397                         // LadyHavoc: thanks to taniwha of QuakeForge for pointing out this fix for slowed falling in corners
1398                         VectorNormalize(dir);
1399                         d = DotProduct(dir, PRVM_serveredictvector(ent, velocity));
1400                         VectorScale(dir, d, PRVM_serveredictvector(ent, velocity));
1401                 }
1402
1403                 // if current velocity is against the original velocity,
1404                 // stop dead to avoid tiny occilations in sloping corners
1405                 if (DotProduct(PRVM_serveredictvector(ent, velocity), primal_velocity) <= 0)
1406                 {
1407                         VectorClear(PRVM_serveredictvector(ent, velocity));
1408                         break;
1409                 }
1410         }
1411
1412         //Con_Printf("entity %i final: blocked %i velocity %f %f %f\n", ent - prog->edicts, blocked, PRVM_serveredictvector(ent, velocity)[0], PRVM_serveredictvector(ent, velocity)[1], PRVM_serveredictvector(ent, velocity)[2]);
1413
1414         /*
1415         if ((blocked & 1) == 0 && bumpcount > 1)
1416         {
1417                 // LadyHavoc: fix the 'fall to your death in a wedge corner' glitch
1418                 // flag ONGROUND if there's ground under it
1419                 trace = SV_TraceBox(PRVM_serveredictvector(ent, origin), PRVM_serveredictvector(ent, mins), PRVM_serveredictvector(ent, maxs), end, MOVE_NORMAL, ent, hitsupercontentsmask, skipsupercontentsmask, skipmaterialflagsmask);
1420         }
1421         */
1422
1423         // LadyHavoc: this came from QW and allows you to get out of water more easily
1424         if (sv_gameplayfix_easierwaterjump.integer && ((int)PRVM_serveredictfloat(ent, flags) & FL_WATERJUMP) && !(blocked & 8))
1425                 VectorCopy(primal_velocity, PRVM_serveredictvector(ent, velocity));
1426
1427         if(applygravity)
1428         {
1429                 if(!sv_gameplayfix_nogravityonground.integer || !((int)PRVM_serveredictfloat(ent, flags) & FL_ONGROUND))
1430                 {
1431                         if (sv_gameplayfix_gravityunaffectedbyticrate.integer)
1432                                 PRVM_serveredictvector(ent, velocity)[2] -= gravity * 0.5f;
1433                 }
1434         }
1435
1436         return blocked;
1437 }
1438
1439 /*
1440 ============
1441 SV_Gravity
1442
1443 ============
1444 */
1445 static float SV_Gravity (prvm_edict_t *ent)
1446 {
1447         prvm_prog_t *prog = SVVM_prog;
1448         float ent_gravity;
1449
1450         ent_gravity = PRVM_serveredictfloat(ent, gravity);
1451         if (!ent_gravity)
1452                 ent_gravity = 1.0f;
1453         return ent_gravity * sv_gravity.value * sv.frametime;
1454 }
1455
1456
1457 /*
1458 ===============================================================================
1459
1460 PUSHMOVE
1461
1462 ===============================================================================
1463 */
1464
1465 static qbool SV_NudgeOutOfSolid_PivotIsKnownGood(prvm_edict_t *ent, vec3_t pivot)
1466 {
1467         prvm_prog_t *prog = SVVM_prog;
1468         int bump;
1469         trace_t stucktrace;
1470         vec3_t stuckorigin;
1471         vec3_t stuckmins, stuckmaxs;
1472         vec3_t goodmins, goodmaxs;
1473         vec3_t testorigin;
1474         vec_t nudge;
1475         vec3_t move;
1476         VectorCopy(PRVM_serveredictvector(ent, origin), stuckorigin);
1477         VectorCopy(PRVM_serveredictvector(ent, mins), stuckmins);
1478         VectorCopy(PRVM_serveredictvector(ent, maxs), stuckmaxs);
1479         VectorCopy(pivot, goodmins);
1480         VectorCopy(pivot, goodmaxs);
1481         for (bump = 0;bump < 6;bump++)
1482         {
1483                 int coord = 2-(bump >> 1);
1484                 //int coord = (bump >> 1);
1485                 int dir = (bump & 1);
1486                 int subbump;
1487
1488                 for(subbump = 0; ; ++subbump)
1489                 {
1490                         VectorCopy(stuckorigin, testorigin);
1491                         if(dir)
1492                         {
1493                                 // pushing maxs
1494                                 testorigin[coord] += stuckmaxs[coord] - goodmaxs[coord];
1495                         }
1496                         else
1497                         {
1498                                 // pushing mins
1499                                 testorigin[coord] += stuckmins[coord] - goodmins[coord];
1500                         }
1501
1502                         stucktrace = SV_TraceBox(stuckorigin, goodmins, goodmaxs, testorigin, MOVE_NOMONSTERS, ent, SV_GenericHitSuperContentsMask(ent), 0, 0, collision_extendmovelength.value);
1503                         if (stucktrace.bmodelstartsolid)
1504                         {
1505                                 // BAD BAD, can't fix that
1506                                 return false;
1507                         }
1508
1509                         if (stucktrace.fraction >= 1)
1510                                 break; // it WORKS!
1511
1512                         if(subbump >= 10)
1513                         {
1514                                 // BAD BAD, can't fix that
1515                                 return false;
1516                         }
1517
1518                         // we hit something... let's move out of it
1519                         VectorSubtract(stucktrace.endpos, testorigin, move);
1520                         nudge = DotProduct(stucktrace.plane.normal, move) + 0.03125f; // FIXME cvar this constant
1521                         VectorMA(stuckorigin, nudge, stucktrace.plane.normal, stuckorigin);
1522                 }
1523                 /*
1524                 if(subbump > 0)
1525                         Con_Printf("subbump: %d\n", subbump);
1526                 */
1527
1528                 if(dir)
1529                 {
1530                         // pushing maxs
1531                         goodmaxs[coord] = stuckmaxs[coord];
1532                 }
1533                 else
1534                 {
1535                         // pushing mins
1536                         goodmins[coord] = stuckmins[coord];
1537                 }
1538         }
1539
1540         // WE WIN
1541         VectorCopy(stuckorigin, PRVM_serveredictvector(ent, origin));
1542
1543         return true;
1544 }
1545
1546 qbool SV_NudgeOutOfSolid(prvm_edict_t *ent)
1547 {
1548         prvm_prog_t *prog = SVVM_prog;
1549         int bump, pass;
1550         trace_t stucktrace;
1551         vec3_t stuckorigin;
1552         vec3_t stuckmins, stuckmaxs;
1553         vec_t nudge;
1554         vec_t separation = sv_gameplayfix_nudgeoutofsolid_separation.value;
1555         if (sv.worldmodel && sv.worldmodel->brushq1.numclipnodes)
1556                 separation = 0.0f; // when using hulls, it can not be enlarged
1557         VectorCopy(PRVM_serveredictvector(ent, mins), stuckmins);
1558         VectorCopy(PRVM_serveredictvector(ent, maxs), stuckmaxs);
1559         stuckmins[0] -= separation;
1560         stuckmins[1] -= separation;
1561         stuckmins[2] -= separation;
1562         stuckmaxs[0] += separation;
1563         stuckmaxs[1] += separation;
1564         stuckmaxs[2] += separation;
1565         // first pass we try to get it out of brush entities
1566         // second pass we try to get it out of world only (can't win them all)
1567         for (pass = 0;pass < 2;pass++)
1568         {
1569                 VectorCopy(PRVM_serveredictvector(ent, origin), stuckorigin);
1570                 for (bump = 0;bump < 10;bump++)
1571                 {
1572                         stucktrace = SV_TraceBox(stuckorigin, stuckmins, stuckmaxs, stuckorigin, pass ? MOVE_WORLDONLY : MOVE_NOMONSTERS, ent, SV_GenericHitSuperContentsMask(ent), 0, 0, collision_extendmovelength.value);
1573                         if (!stucktrace.bmodelstartsolid || stucktrace.startdepth >= 0)
1574                         {
1575                                 // found a good location, use it
1576                                 VectorCopy(stuckorigin, PRVM_serveredictvector(ent, origin));
1577                                 return true;
1578                         }
1579                         nudge = -stucktrace.startdepth;
1580                         VectorMA(stuckorigin, nudge, stucktrace.startdepthnormal, stuckorigin);
1581                 }
1582         }
1583         return false;
1584 }
1585
1586 /*
1587 ============
1588 SV_PushEntity
1589
1590 Does not change the entities velocity at all
1591 The trace struct is filled with the trace that has been done.
1592 Returns true if the push did not result in the entity being teleported by QC code.
1593 ============
1594 */
1595 static qbool SV_PushEntity (trace_t *trace, prvm_edict_t *ent, vec3_t push, qbool dolink)
1596 {
1597         prvm_prog_t *prog = SVVM_prog;
1598         int solid;
1599         int movetype;
1600         int type;
1601         vec3_t mins, maxs;
1602         vec3_t start;
1603         vec3_t end;
1604
1605         solid = (int)PRVM_serveredictfloat(ent, solid);
1606         movetype = (int)PRVM_serveredictfloat(ent, movetype);
1607         VectorCopy(PRVM_serveredictvector(ent, mins), mins);
1608         VectorCopy(PRVM_serveredictvector(ent, maxs), maxs);
1609
1610         // move start position out of solids
1611         if (sv_gameplayfix_nudgeoutofsolid.integer && sv_gameplayfix_nudgeoutofsolid_separation.value >= 0)
1612         {
1613                 SV_NudgeOutOfSolid(ent);
1614         }
1615
1616         VectorCopy(PRVM_serveredictvector(ent, origin), start);
1617         VectorAdd(start, push, end);
1618
1619         if (movetype == MOVETYPE_FLYMISSILE)
1620                 type = MOVE_MISSILE;
1621         else if (movetype == MOVETYPE_FLY_WORLDONLY)
1622                 type = MOVE_WORLDONLY;
1623         else if (solid == SOLID_TRIGGER || solid == SOLID_NOT)
1624                 type = MOVE_NOMONSTERS; // only clip against bmodels
1625         else
1626                 type = MOVE_NORMAL;
1627
1628         *trace = SV_TraceBox(start, mins, maxs, end, type, ent, SV_GenericHitSuperContentsMask(ent), 0, 0, collision_extendmovelength.value);
1629         // fail the move if stuck in world
1630         if (trace->worldstartsolid)
1631                 return true;
1632
1633         VectorCopy(trace->endpos, PRVM_serveredictvector(ent, origin));
1634
1635         ent->priv.required->mark = PRVM_EDICT_MARK_WAIT_FOR_SETORIGIN; // -2: setorigin running
1636
1637         SV_LinkEdict(ent);
1638
1639 #if 0
1640         if(!trace->startsolid)
1641         if(SV_TraceBox(PRVM_serveredictvector(ent, origin), PRVM_serveredictvector(ent, mins), PRVM_serveredictvector(ent, maxs), PRVM_serveredictvector(ent, origin), type, ent, SV_GenericHitSuperContentsMask(ent), 0).startsolid)
1642         {
1643                 Con_Printf("something eeeeevil happened\n");
1644         }
1645 #endif
1646
1647         if (dolink)
1648                 SV_LinkEdict_TouchAreaGrid(ent);
1649
1650         if((PRVM_serveredictfloat(ent, solid) >= SOLID_TRIGGER && trace->ent && (!((int)PRVM_serveredictfloat(ent, flags) & FL_ONGROUND) || PRVM_serveredictedict(ent, groundentity) != PRVM_EDICT_TO_PROG(trace->ent))))
1651                 SV_Impact (ent, trace);
1652
1653         if(ent->priv.required->mark == PRVM_EDICT_MARK_SETORIGIN_CAUGHT)
1654         {
1655                 ent->priv.required->mark = 0;
1656                 return false;
1657         }
1658         else if(ent->priv.required->mark == PRVM_EDICT_MARK_WAIT_FOR_SETORIGIN)
1659         {
1660                 ent->priv.required->mark = 0;
1661                 return true;
1662         }
1663         else
1664         {
1665                 Con_Printf("The edict mark had been overwritten! Please debug this.\n");
1666                 return true;
1667         }
1668 }
1669
1670
1671 /*
1672 ============
1673 SV_PushMove
1674
1675 ============
1676 */
1677 static void SV_PushMove (prvm_edict_t *pusher, float movetime)
1678 {
1679         prvm_prog_t *prog = SVVM_prog;
1680         int i, e, index;
1681         int pusherowner, pusherprog;
1682         int checkcontents;
1683         qbool rotated;
1684         float savesolid, movetime2, pushltime;
1685         vec3_t mins, maxs, move, move1, moveangle, pushorig, pushang, a, forward, left, up, org, pushermins, pushermaxs, checkorigin, checkmins, checkmaxs;
1686         int num_moved;
1687         int numcheckentities;
1688         static prvm_edict_t *checkentities[MAX_EDICTS];
1689         model_t *pushermodel;
1690         trace_t trace, trace2;
1691         matrix4x4_t pusherfinalmatrix, pusherfinalimatrix;
1692         static unsigned short moved_edicts[MAX_EDICTS];
1693         vec3_t pivot;
1694
1695         if (!PRVM_serveredictvector(pusher, velocity)[0] && !PRVM_serveredictvector(pusher, velocity)[1] && !PRVM_serveredictvector(pusher, velocity)[2] && !PRVM_serveredictvector(pusher, avelocity)[0] && !PRVM_serveredictvector(pusher, avelocity)[1] && !PRVM_serveredictvector(pusher, avelocity)[2])
1696         {
1697                 PRVM_serveredictfloat(pusher, ltime) += movetime;
1698                 return;
1699         }
1700
1701         switch ((int) PRVM_serveredictfloat(pusher, solid))
1702         {
1703         // LadyHavoc: valid pusher types
1704         case SOLID_BSP:
1705         case SOLID_BBOX:
1706         case SOLID_SLIDEBOX:
1707         case SOLID_CORPSE: // LadyHavoc: this would be weird...
1708                 break;
1709         // LadyHavoc: no collisions
1710         case SOLID_NOT:
1711         case SOLID_TRIGGER:
1712                 VectorMA (PRVM_serveredictvector(pusher, origin), movetime, PRVM_serveredictvector(pusher, velocity), PRVM_serveredictvector(pusher, origin));
1713                 VectorMA (PRVM_serveredictvector(pusher, angles), movetime, PRVM_serveredictvector(pusher, avelocity), PRVM_serveredictvector(pusher, angles));
1714                 PRVM_serveredictvector(pusher, angles)[0] -= 360.0 * floor(PRVM_serveredictvector(pusher, angles)[0] * (1.0 / 360.0));
1715                 PRVM_serveredictvector(pusher, angles)[1] -= 360.0 * floor(PRVM_serveredictvector(pusher, angles)[1] * (1.0 / 360.0));
1716                 PRVM_serveredictvector(pusher, angles)[2] -= 360.0 * floor(PRVM_serveredictvector(pusher, angles)[2] * (1.0 / 360.0));
1717                 PRVM_serveredictfloat(pusher, ltime) += movetime;
1718                 SV_LinkEdict(pusher);
1719                 return;
1720         default:
1721                 Con_Printf("SV_PushMove: entity #%i, unrecognized solid type %f\n", PRVM_NUM_FOR_EDICT(pusher), PRVM_serveredictfloat(pusher, solid));
1722                 return;
1723         }
1724         index = (int) PRVM_serveredictfloat(pusher, modelindex);
1725         if (index < 1 || index >= MAX_MODELS)
1726         {
1727                 Con_Printf("SV_PushMove: entity #%i has an invalid modelindex %f\n", PRVM_NUM_FOR_EDICT(pusher), PRVM_serveredictfloat(pusher, modelindex));
1728                 return;
1729         }
1730         pushermodel = SV_GetModelByIndex(index);
1731         pusherowner = PRVM_serveredictedict(pusher, owner);
1732         pusherprog = PRVM_EDICT_TO_PROG(pusher);
1733
1734         rotated = VectorLength2(PRVM_serveredictvector(pusher, angles)) + VectorLength2(PRVM_serveredictvector(pusher, avelocity)) > 0;
1735
1736         movetime2 = movetime;
1737         VectorScale(PRVM_serveredictvector(pusher, velocity), movetime2, move1);
1738         VectorScale(PRVM_serveredictvector(pusher, avelocity), movetime2, moveangle);
1739         if (moveangle[0] || moveangle[2])
1740         {
1741                 for (i = 0;i < 3;i++)
1742                 {
1743                         if (move1[i] > 0)
1744                         {
1745                                 mins[i] = pushermodel->rotatedmins[i] + PRVM_serveredictvector(pusher, origin)[i] - 1;
1746                                 maxs[i] = pushermodel->rotatedmaxs[i] + move1[i] + PRVM_serveredictvector(pusher, origin)[i] + 1;
1747                         }
1748                         else
1749                         {
1750                                 mins[i] = pushermodel->rotatedmins[i] + move1[i] + PRVM_serveredictvector(pusher, origin)[i] - 1;
1751                                 maxs[i] = pushermodel->rotatedmaxs[i] + PRVM_serveredictvector(pusher, origin)[i] + 1;
1752                         }
1753                 }
1754         }
1755         else if (moveangle[1])
1756         {
1757                 for (i = 0;i < 3;i++)
1758                 {
1759                         if (move1[i] > 0)
1760                         {
1761                                 mins[i] = pushermodel->yawmins[i] + PRVM_serveredictvector(pusher, origin)[i] - 1;
1762                                 maxs[i] = pushermodel->yawmaxs[i] + move1[i] + PRVM_serveredictvector(pusher, origin)[i] + 1;
1763                         }
1764                         else
1765                         {
1766                                 mins[i] = pushermodel->yawmins[i] + move1[i] + PRVM_serveredictvector(pusher, origin)[i] - 1;
1767                                 maxs[i] = pushermodel->yawmaxs[i] + PRVM_serveredictvector(pusher, origin)[i] + 1;
1768                         }
1769                 }
1770         }
1771         else
1772         {
1773                 for (i = 0;i < 3;i++)
1774                 {
1775                         if (move1[i] > 0)
1776                         {
1777                                 mins[i] = pushermodel->normalmins[i] + PRVM_serveredictvector(pusher, origin)[i] - 1;
1778                                 maxs[i] = pushermodel->normalmaxs[i] + move1[i] + PRVM_serveredictvector(pusher, origin)[i] + 1;
1779                         }
1780                         else
1781                         {
1782                                 mins[i] = pushermodel->normalmins[i] + move1[i] + PRVM_serveredictvector(pusher, origin)[i] - 1;
1783                                 maxs[i] = pushermodel->normalmaxs[i] + PRVM_serveredictvector(pusher, origin)[i] + 1;
1784                         }
1785                 }
1786         }
1787
1788         VectorNegate (moveangle, a);
1789         AngleVectorsFLU (a, forward, left, up);
1790
1791         VectorCopy (PRVM_serveredictvector(pusher, origin), pushorig);
1792         VectorCopy (PRVM_serveredictvector(pusher, angles), pushang);
1793         pushltime = PRVM_serveredictfloat(pusher, ltime);
1794
1795 // move the pusher to its final position
1796
1797         VectorMA (PRVM_serveredictvector(pusher, origin), movetime, PRVM_serveredictvector(pusher, velocity), PRVM_serveredictvector(pusher, origin));
1798         VectorMA (PRVM_serveredictvector(pusher, angles), movetime, PRVM_serveredictvector(pusher, avelocity), PRVM_serveredictvector(pusher, angles));
1799         PRVM_serveredictfloat(pusher, ltime) += movetime;
1800         SV_LinkEdict(pusher);
1801
1802         pushermodel = SV_GetModelFromEdict(pusher);
1803         Matrix4x4_CreateFromQuakeEntity(&pusherfinalmatrix, PRVM_serveredictvector(pusher, origin)[0], PRVM_serveredictvector(pusher, origin)[1], PRVM_serveredictvector(pusher, origin)[2], PRVM_serveredictvector(pusher, angles)[0], PRVM_serveredictvector(pusher, angles)[1], PRVM_serveredictvector(pusher, angles)[2], 1);
1804         Matrix4x4_Invert_Simple(&pusherfinalimatrix, &pusherfinalmatrix);
1805
1806         savesolid = PRVM_serveredictfloat(pusher, solid);
1807
1808 // see if any solid entities are inside the final position
1809         num_moved = 0;
1810
1811         if (PRVM_serveredictfloat(pusher, movetype) == MOVETYPE_FAKEPUSH) // Tenebrae's MOVETYPE_PUSH variant that doesn't push...
1812                 numcheckentities = 0;
1813         else // MOVETYPE_PUSH
1814                 numcheckentities = SV_EntitiesInBox(mins, maxs, MAX_EDICTS, checkentities);
1815         for (e = 0;e < numcheckentities;e++)
1816         {
1817                 prvm_edict_t *check = checkentities[e];
1818                 int movetype = (int)PRVM_serveredictfloat(check, movetype);
1819                 switch(movetype)
1820                 {
1821                 case MOVETYPE_NONE:
1822                 case MOVETYPE_PUSH:
1823                 case MOVETYPE_FOLLOW:
1824                 case MOVETYPE_NOCLIP:
1825                 case MOVETYPE_FLY_WORLDONLY:
1826                         continue;
1827                 default:
1828                         break;
1829                 }
1830
1831                 if (PRVM_serveredictedict(check, owner) == pusherprog)
1832                         continue;
1833
1834                 if (pusherowner == PRVM_EDICT_TO_PROG(check))
1835                         continue;
1836
1837                 //Con_Printf("%i %s ", PRVM_NUM_FOR_EDICT(check), PRVM_GetString(PRVM_serveredictstring(check, classname)));
1838
1839                 // tell any MOVETYPE_STEP entity that it may need to check for water transitions
1840                 check->priv.server->waterposition_forceupdate = true;
1841
1842                 checkcontents = SV_GenericHitSuperContentsMask(check);
1843
1844                 // if the entity is standing on the pusher, it will definitely be moved
1845                 // if the entity is not standing on the pusher, but is in the pusher's
1846                 // final position, move it
1847                 if (!((int)PRVM_serveredictfloat(check, flags) & FL_ONGROUND) || PRVM_PROG_TO_EDICT(PRVM_serveredictedict(check, groundentity)) != pusher)
1848                 {
1849                         VectorCopy(PRVM_serveredictvector(pusher, mins), pushermins);
1850                         VectorCopy(PRVM_serveredictvector(pusher, maxs), pushermaxs);
1851                         VectorCopy(PRVM_serveredictvector(check, origin), checkorigin);
1852                         VectorCopy(PRVM_serveredictvector(check, mins), checkmins);
1853                         VectorCopy(PRVM_serveredictvector(check, maxs), checkmaxs);
1854                         Collision_ClipToGenericEntity(&trace, pushermodel, pusher->priv.server->frameblend, &pusher->priv.server->skeleton, pushermins, pushermaxs, SUPERCONTENTS_BODY, &pusherfinalmatrix, &pusherfinalimatrix, checkorigin, checkmins, checkmaxs, checkorigin, checkcontents, 0, 0, collision_extendmovelength.value);
1855                         //trace = SV_TraceBox(PRVM_serveredictvector(check, origin), PRVM_serveredictvector(check, mins), PRVM_serveredictvector(check, maxs), PRVM_serveredictvector(check, origin), MOVE_NOMONSTERS, check, checkcontents);
1856                         if (!trace.startsolid)
1857                         {
1858                                 //Con_Printf("- not in solid\n");
1859                                 continue;
1860                         }
1861                 }
1862
1863                 VectorLerp(PRVM_serveredictvector(check, mins), 0.5f, PRVM_serveredictvector(check, maxs), pivot);
1864                 //VectorClear(pivot);
1865
1866                 if (rotated)
1867                 {
1868                         vec3_t org2;
1869                         VectorSubtract (PRVM_serveredictvector(check, origin), PRVM_serveredictvector(pusher, origin), org);
1870                         VectorAdd (org, pivot, org);
1871                         org2[0] = DotProduct (org, forward);
1872                         org2[1] = DotProduct (org, left);
1873                         org2[2] = DotProduct (org, up);
1874                         VectorSubtract (org2, org, move);
1875                         VectorAdd (move, move1, move);
1876                 }
1877                 else
1878                         VectorCopy (move1, move);
1879
1880                 //Con_Printf("- pushing %f %f %f\n", move[0], move[1], move[2]);
1881
1882                 VectorCopy (PRVM_serveredictvector(check, origin), check->priv.server->moved_from);
1883                 VectorCopy (PRVM_serveredictvector(check, angles), check->priv.server->moved_fromangles);
1884                 moved_edicts[num_moved++] = PRVM_NUM_FOR_EDICT(check);
1885
1886                 // physics objects need better collisions than this code can do
1887                 if (movetype == MOVETYPE_PHYSICS)
1888                 {
1889                         VectorAdd(PRVM_serveredictvector(check, origin), move, PRVM_serveredictvector(check, origin));
1890                         SV_LinkEdict(check);
1891                         SV_LinkEdict_TouchAreaGrid(check);
1892                         continue;
1893                 }
1894
1895                 // try moving the contacted entity
1896                 PRVM_serveredictfloat(pusher, solid) = SOLID_NOT;
1897                 if(!SV_PushEntity (&trace, check, move, true))
1898                 {
1899                         // entity "check" got teleported
1900                         PRVM_serveredictvector(check, angles)[1] += trace.fraction * moveangle[1];
1901                         PRVM_serveredictfloat(pusher, solid) = savesolid; // was SOLID_BSP
1902                         continue; // pushed enough
1903                 }
1904                 // FIXME: turn players specially
1905                 PRVM_serveredictvector(check, angles)[1] += trace.fraction * moveangle[1];
1906                 PRVM_serveredictfloat(pusher, solid) = savesolid; // was SOLID_BSP
1907                 //Con_Printf("%s:%d frac %f startsolid %d bmodelstartsolid %d allsolid %d\n", __FILE__, __LINE__, trace.fraction, trace.startsolid, trace.bmodelstartsolid, trace.allsolid);
1908
1909                 // this trace.fraction < 1 check causes items to fall off of pushers
1910                 // if they pass under or through a wall
1911                 // the groundentity check causes items to fall off of ledges
1912                 if (PRVM_serveredictfloat(check, movetype) != MOVETYPE_WALK && (trace.fraction < 1 || PRVM_PROG_TO_EDICT(PRVM_serveredictedict(check, groundentity)) != pusher))
1913                         PRVM_serveredictfloat(check, flags) = (int)PRVM_serveredictfloat(check, flags) & ~FL_ONGROUND;
1914
1915                 // if it is still inside the pusher, block
1916                 VectorCopy(PRVM_serveredictvector(pusher, mins), pushermins);
1917                 VectorCopy(PRVM_serveredictvector(pusher, maxs), pushermaxs);
1918                 VectorCopy(PRVM_serveredictvector(check, origin), checkorigin);
1919                 VectorCopy(PRVM_serveredictvector(check, mins), checkmins);
1920                 VectorCopy(PRVM_serveredictvector(check, maxs), checkmaxs);
1921                 Collision_ClipToGenericEntity(&trace, pushermodel, pusher->priv.server->frameblend, &pusher->priv.server->skeleton, pushermins, pushermaxs, SUPERCONTENTS_BODY, &pusherfinalmatrix, &pusherfinalimatrix, checkorigin, checkmins, checkmaxs, checkorigin, checkcontents, 0, 0, collision_extendmovelength.value);
1922                 if (trace.startsolid)
1923                 {
1924                         vec3_t move2;
1925                         if(SV_NudgeOutOfSolid_PivotIsKnownGood(check, pivot))
1926                         {
1927                                 // hack to invoke all necessary movement triggers
1928                                 VectorClear(move2);
1929                                 if(!SV_PushEntity(&trace2, check, move2, true))
1930                                 {
1931                                         // entity "check" got teleported
1932                                         continue;
1933                                 }
1934                                 // we could fix it
1935                                 continue;
1936                         }
1937
1938                         // still inside pusher, so it's really blocked
1939
1940                         // fail the move
1941                         if (PRVM_serveredictvector(check, mins)[0] == PRVM_serveredictvector(check, maxs)[0])
1942                                 continue;
1943                         if (PRVM_serveredictfloat(check, solid) == SOLID_NOT || PRVM_serveredictfloat(check, solid) == SOLID_TRIGGER)
1944                         {
1945                                 // corpse
1946                                 PRVM_serveredictvector(check, mins)[0] = PRVM_serveredictvector(check, mins)[1] = 0;
1947                                 VectorCopy (PRVM_serveredictvector(check, mins), PRVM_serveredictvector(check, maxs));
1948                                 continue;
1949                         }
1950
1951                         VectorCopy (pushorig, PRVM_serveredictvector(pusher, origin));
1952                         VectorCopy (pushang, PRVM_serveredictvector(pusher, angles));
1953                         PRVM_serveredictfloat(pusher, ltime) = pushltime;
1954                         SV_LinkEdict(pusher);
1955
1956                         // move back any entities we already moved
1957                         for (i = 0;i < num_moved;i++)
1958                         {
1959                                 prvm_edict_t *ed = PRVM_EDICT_NUM(moved_edicts[i]);
1960                                 VectorCopy (ed->priv.server->moved_from, PRVM_serveredictvector(ed, origin));
1961                                 VectorCopy (ed->priv.server->moved_fromangles, PRVM_serveredictvector(ed, angles));
1962                                 SV_LinkEdict(ed);
1963                         }
1964
1965                         // if the pusher has a "blocked" function, call it, otherwise just stay in place until the obstacle is gone
1966                         if (PRVM_serveredictfunction(pusher, blocked))
1967                         {
1968                                 PRVM_serverglobalfloat(time) = sv.time;
1969                                 PRVM_serverglobaledict(self) = PRVM_EDICT_TO_PROG(pusher);
1970                                 PRVM_serverglobaledict(other) = PRVM_EDICT_TO_PROG(check);
1971                                 prog->ExecuteProgram(prog, PRVM_serveredictfunction(pusher, blocked), "QC function self.blocked is missing");
1972                         }
1973                         break;
1974                 }
1975         }
1976         PRVM_serveredictvector(pusher, angles)[0] -= 360.0 * floor(PRVM_serveredictvector(pusher, angles)[0] * (1.0 / 360.0));
1977         PRVM_serveredictvector(pusher, angles)[1] -= 360.0 * floor(PRVM_serveredictvector(pusher, angles)[1] * (1.0 / 360.0));
1978         PRVM_serveredictvector(pusher, angles)[2] -= 360.0 * floor(PRVM_serveredictvector(pusher, angles)[2] * (1.0 / 360.0));
1979 }
1980
1981 /*
1982 ================
1983 SV_Physics_Pusher
1984
1985 ================
1986 */
1987 static void SV_Physics_Pusher (prvm_edict_t *ent)
1988 {
1989         prvm_prog_t *prog = SVVM_prog;
1990         prvm_vec_t thinktime, oldltime, movetime;
1991
1992         oldltime = PRVM_serveredictfloat(ent, ltime);
1993
1994         thinktime = PRVM_serveredictfloat(ent, nextthink);
1995         if (thinktime < PRVM_serveredictfloat(ent, ltime) + sv.frametime)
1996         {
1997                 movetime = thinktime - PRVM_serveredictfloat(ent, ltime);
1998                 if (movetime < 0)
1999                         movetime = 0;
2000         }
2001         else
2002                 movetime = sv.frametime;
2003
2004         if (movetime)
2005                 // advances PRVM_serveredictfloat(ent, ltime) if not blocked
2006                 SV_PushMove (ent, movetime);
2007
2008         if (thinktime > oldltime && thinktime <= PRVM_serveredictfloat(ent, ltime))
2009         {
2010                 PRVM_serveredictfloat(ent, nextthink) = 0;
2011                 PRVM_serverglobalfloat(time) = sv.time;
2012                 PRVM_serverglobaledict(self) = PRVM_EDICT_TO_PROG(ent);
2013                 PRVM_serverglobaledict(other) = PRVM_EDICT_TO_PROG(prog->edicts);
2014                 prog->ExecuteProgram(prog, PRVM_serveredictfunction(ent, think), "QC function self.think is missing");
2015         }
2016 }
2017
2018
2019 /*
2020 ===============================================================================
2021
2022 CLIENT MOVEMENT
2023
2024 ===============================================================================
2025 */
2026
2027 static float unstickoffsets[] =
2028 {
2029         // poutting -/+z changes first as they are least weird
2030          0,  0,  -1,
2031          0,  0,  1,
2032          // x or y changes
2033         -1,  0,  0,
2034          1,  0,  0,
2035          0, -1,  0,
2036          0,  1,  0,
2037          // x and y changes
2038         -1, -1,  0,
2039          1, -1,  0,
2040         -1,  1,  0,
2041          1,  1,  0,
2042 };
2043
2044 typedef enum unstickresult_e
2045 {
2046         UNSTICK_STUCK = 0,
2047         UNSTICK_GOOD = 1,
2048         UNSTICK_UNSTUCK = 2
2049 }
2050 unstickresult_t;
2051
2052 static unstickresult_t SV_UnstickEntityReturnOffset (prvm_edict_t *ent, vec3_t offset)
2053 {
2054         prvm_prog_t *prog = SVVM_prog;
2055         int i, maxunstick;
2056
2057         // if not stuck in a bmodel, just return
2058         if (!SV_TestEntityPosition(ent, vec3_origin))
2059                 return UNSTICK_GOOD;
2060
2061         for (i = 0;i < (int)(sizeof(unstickoffsets) / sizeof(unstickoffsets[0]));i += 3)
2062         {
2063                 if (!SV_TestEntityPosition(ent, unstickoffsets + i))
2064                 {
2065                         VectorCopy(unstickoffsets + i, offset);
2066                         SV_LinkEdict(ent);
2067                         //SV_LinkEdict_TouchAreaGrid(ent);
2068                         return UNSTICK_UNSTUCK;
2069                 }
2070         }
2071
2072         maxunstick = (int) ((PRVM_serveredictvector(ent, maxs)[2] - PRVM_serveredictvector(ent, mins)[2]) * 0.36);
2073         // magic number 0.36 allows unsticking by up to 17 units with the largest supported bbox
2074
2075         for(i = 2; i <= maxunstick; ++i)
2076         {
2077                 VectorClear(offset);
2078                 offset[2] = -i;
2079                 if (!SV_TestEntityPosition(ent, offset))
2080                 {
2081                         SV_LinkEdict(ent);
2082                         //SV_LinkEdict_TouchAreaGrid(ent);
2083                         return UNSTICK_UNSTUCK;
2084                 }
2085                 offset[2] = i;
2086                 if (!SV_TestEntityPosition(ent, offset))
2087                 {
2088                         SV_LinkEdict(ent);
2089                         //SV_LinkEdict_TouchAreaGrid(ent);
2090                         return UNSTICK_UNSTUCK;
2091                 }
2092         }
2093
2094         return UNSTICK_STUCK;
2095 }
2096
2097 qbool SV_UnstickEntity (prvm_edict_t *ent)
2098 {
2099         prvm_prog_t *prog = SVVM_prog;
2100         vec3_t offset;
2101         switch(SV_UnstickEntityReturnOffset(ent, offset))
2102         {
2103                 case UNSTICK_GOOD:
2104                         return true;
2105                 case UNSTICK_UNSTUCK:
2106                         Con_DPrintf("Unstuck entity %i (classname \"%s\") with offset %f %f %f.\n", (int)PRVM_EDICT_TO_PROG(ent), PRVM_GetString(prog, PRVM_serveredictstring(ent, classname)), offset[0], offset[1], offset[2]);
2107                         return true;
2108                 case UNSTICK_STUCK:
2109                         if (developer_extra.integer)
2110                                 Con_DPrintf("Stuck entity %i (classname \"%s\").\n", (int)PRVM_EDICT_TO_PROG(ent), PRVM_GetString(prog, PRVM_serveredictstring(ent, classname)));
2111                         return false;
2112                 default:
2113                         Con_Printf("SV_UnstickEntityReturnOffset returned a value outside its enum.\n");
2114                         return false;
2115         }
2116 }
2117
2118 /*
2119 =============
2120 SV_CheckStuck
2121
2122 This is a big hack to try and fix the rare case of getting stuck in the world
2123 clipping hull.
2124 =============
2125 */
2126 static void SV_CheckStuck (prvm_edict_t *ent)
2127 {
2128         prvm_prog_t *prog = SVVM_prog;
2129         vec3_t offset;
2130
2131         switch(SV_UnstickEntityReturnOffset(ent, offset))
2132         {
2133                 case UNSTICK_GOOD:
2134                         VectorCopy (PRVM_serveredictvector(ent, origin), PRVM_serveredictvector(ent, oldorigin));
2135                         break;
2136                 case UNSTICK_UNSTUCK:
2137                         Con_DPrintf("Unstuck player entity %i (classname \"%s\") with offset %f %f %f.\n", (int)PRVM_EDICT_TO_PROG(ent), PRVM_GetString(prog, PRVM_serveredictstring(ent, classname)), offset[0], offset[1], offset[2]);
2138                         break;
2139                 case UNSTICK_STUCK:
2140                         VectorSubtract(PRVM_serveredictvector(ent, oldorigin), PRVM_serveredictvector(ent, origin), offset);
2141                         if (!SV_TestEntityPosition(ent, offset))
2142                         {
2143                                 Con_DPrintf("Unstuck player entity %i (classname \"%s\") by restoring oldorigin.\n", (int)PRVM_EDICT_TO_PROG(ent), PRVM_GetString(prog, PRVM_serveredictstring(ent, classname)));
2144                                 SV_LinkEdict(ent);
2145                                 //SV_LinkEdict_TouchAreaGrid(ent);
2146                         }
2147                         else
2148                                 Con_DPrintf("Stuck player entity %i (classname \"%s\").\n", (int)PRVM_EDICT_TO_PROG(ent), PRVM_GetString(prog, PRVM_serveredictstring(ent, classname)));
2149                         break;
2150                 default:
2151                         Con_Printf("SV_UnstickEntityReturnOffset returned a value outside its enum.\n");
2152         }
2153 }
2154
2155
2156 /*
2157 =============
2158 SV_CheckWater
2159 =============
2160 */
2161 static qbool SV_CheckWater (prvm_edict_t *ent)
2162 {
2163         prvm_prog_t *prog = SVVM_prog;
2164         int cont;
2165         int nNativeContents;
2166         vec3_t point;
2167
2168         point[0] = PRVM_serveredictvector(ent, origin)[0];
2169         point[1] = PRVM_serveredictvector(ent, origin)[1];
2170         point[2] = PRVM_serveredictvector(ent, origin)[2] + PRVM_serveredictvector(ent, mins)[2] + 1;
2171
2172         // DRESK - Support for Entity Contents Transition Event
2173         // NOTE: Some logic needed to be slightly re-ordered
2174         // to not affect performance and allow for the feature.
2175
2176         // Acquire Super Contents Prior to Resets
2177         cont = SV_PointSuperContents(point);
2178         // Acquire Native Contents Here
2179         nNativeContents = Mod_Q1BSP_NativeContentsFromSuperContents(cont);
2180
2181         // DRESK - Support for Entity Contents Transition Event
2182         if(PRVM_serveredictfloat(ent, watertype))
2183                 // Entity did NOT Spawn; Check
2184                 SV_CheckContentsTransition(ent, nNativeContents);
2185
2186
2187         PRVM_serveredictfloat(ent, waterlevel) = 0;
2188         PRVM_serveredictfloat(ent, watertype) = CONTENTS_EMPTY;
2189         cont = SV_PointSuperContents(point);
2190         if (cont & (SUPERCONTENTS_LIQUIDSMASK))
2191         {
2192                 PRVM_serveredictfloat(ent, watertype) = nNativeContents;
2193                 PRVM_serveredictfloat(ent, waterlevel) = 1;
2194                 point[2] = PRVM_serveredictvector(ent, origin)[2] + (PRVM_serveredictvector(ent, mins)[2] + PRVM_serveredictvector(ent, maxs)[2])*0.5;
2195                 if (SV_PointSuperContents(point) & (SUPERCONTENTS_LIQUIDSMASK))
2196                 {
2197                         PRVM_serveredictfloat(ent, waterlevel) = 2;
2198                         point[2] = PRVM_serveredictvector(ent, origin)[2] + PRVM_serveredictvector(ent, view_ofs)[2];
2199                         if (SV_PointSuperContents(point) & (SUPERCONTENTS_LIQUIDSMASK))
2200                                 PRVM_serveredictfloat(ent, waterlevel) = 3;
2201                 }
2202         }
2203
2204         return PRVM_serveredictfloat(ent, waterlevel) > 1;
2205 }
2206
2207 /*
2208 ============
2209 SV_WallFriction
2210
2211 ============
2212 */
2213 static void SV_WallFriction (prvm_edict_t *ent, float *stepnormal)
2214 {
2215         prvm_prog_t *prog = SVVM_prog;
2216         float d, i;
2217         vec3_t forward, into, side, v_angle;
2218
2219         VectorCopy(PRVM_serveredictvector(ent, v_angle), v_angle);
2220         AngleVectors (v_angle, forward, NULL, NULL);
2221         if ((d = DotProduct (stepnormal, forward) + 0.5) < 0)
2222         {
2223                 // cut the tangential velocity
2224                 i = DotProduct (stepnormal, PRVM_serveredictvector(ent, velocity));
2225                 VectorScale (stepnormal, i, into);
2226                 VectorSubtract (PRVM_serveredictvector(ent, velocity), into, side);
2227                 PRVM_serveredictvector(ent, velocity)[0] = side[0] * (1 + d);
2228                 PRVM_serveredictvector(ent, velocity)[1] = side[1] * (1 + d);
2229         }
2230 }
2231
2232 #if 0
2233 /*
2234 =====================
2235 SV_TryUnstick
2236
2237 Player has come to a dead stop, possibly due to the problem with limited
2238 float precision at some angle joins in the BSP hull.
2239
2240 Try fixing by pushing one pixel in each direction.
2241
2242 This is a hack, but in the interest of good gameplay...
2243 ======================
2244 */
2245 int SV_TryUnstick (prvm_edict_t *ent, vec3_t oldvel)
2246 {
2247         int i, clip;
2248         vec3_t oldorg, dir;
2249
2250         VectorCopy (PRVM_serveredictvector(ent, origin), oldorg);
2251         VectorClear (dir);
2252
2253         for (i=0 ; i<8 ; i++)
2254         {
2255                 // try pushing a little in an axial direction
2256                 switch (i)
2257                 {
2258                         case 0: dir[0] = 2; dir[1] = 0; break;
2259                         case 1: dir[0] = 0; dir[1] = 2; break;
2260                         case 2: dir[0] = -2; dir[1] = 0; break;
2261                         case 3: dir[0] = 0; dir[1] = -2; break;
2262                         case 4: dir[0] = 2; dir[1] = 2; break;
2263                         case 5: dir[0] = -2; dir[1] = 2; break;
2264                         case 6: dir[0] = 2; dir[1] = -2; break;
2265                         case 7: dir[0] = -2; dir[1] = -2; break;
2266                 }
2267
2268                 SV_PushEntity (&trace, ent, dir, false, true);
2269
2270                 // retry the original move
2271                 PRVM_serveredictvector(ent, velocity)[0] = oldvel[0];
2272                 PRVM_serveredictvector(ent, velocity)[1] = oldvel[1];
2273                 PRVM_serveredictvector(ent, velocity)[2] = 0;
2274                 clip = SV_FlyMove (ent, 0.1, NULL, SV_GenericHitSuperContentsMask(ent), 0);
2275
2276                 if (fabs(oldorg[1] - PRVM_serveredictvector(ent, origin)[1]) > 4
2277                  || fabs(oldorg[0] - PRVM_serveredictvector(ent, origin)[0]) > 4)
2278                 {
2279                         Con_DPrint("TryUnstick - success.\n");
2280                         return clip;
2281                 }
2282
2283                 // go back to the original pos and try again
2284                 VectorCopy (oldorg, PRVM_serveredictvector(ent, origin));
2285         }
2286
2287         // still not moving
2288         VectorClear (PRVM_serveredictvector(ent, velocity));
2289         Con_DPrint("TryUnstick - failure.\n");
2290         return 7;
2291 }
2292 #endif
2293
2294 /*
2295 =====================
2296 SV_WalkMove
2297
2298 Only used by players
2299 ======================
2300 */
2301 static void SV_WalkMove (prvm_edict_t *ent)
2302 {
2303         prvm_prog_t *prog = SVVM_prog;
2304         int clip;
2305         int oldonground;
2306         //int originalmove_clip;
2307         int originalmove_flags;
2308         int originalmove_groundentity;
2309         int hitsupercontentsmask = SV_GenericHitSuperContentsMask(ent);
2310         int skipsupercontentsmask = 0;
2311         int skipmaterialflagsmask = 0;
2312         int type;
2313         vec3_t upmove, downmove, start_origin, start_velocity, stepnormal, originalmove_origin, originalmove_velocity, entmins, entmaxs;
2314         trace_t downtrace, trace;
2315         qbool applygravity;
2316
2317         // if frametime is 0 (due to client sending the same timestamp twice),
2318         // don't move
2319         if (sv.frametime <= 0)
2320                 return;
2321
2322         if (sv_gameplayfix_unstickplayers.integer)
2323                 SV_CheckStuck (ent);
2324
2325         applygravity = !SV_CheckWater (ent) && PRVM_serveredictfloat(ent, movetype) == MOVETYPE_WALK && ! ((int)PRVM_serveredictfloat(ent, flags) & FL_WATERJUMP);
2326
2327         SV_CheckVelocity(ent);
2328
2329         // do a regular slide move unless it looks like you ran into a step
2330         oldonground = (int)PRVM_serveredictfloat(ent, flags) & FL_ONGROUND;
2331
2332         VectorCopy (PRVM_serveredictvector(ent, origin), start_origin);
2333         VectorCopy (PRVM_serveredictvector(ent, velocity), start_velocity);
2334
2335         clip = SV_FlyMove (ent, sv.frametime, applygravity, NULL, hitsupercontentsmask, skipsupercontentsmask, skipmaterialflagsmask, sv_gameplayfix_stepmultipletimes.integer ? sv_stepheight.value : 0);
2336
2337         if(sv_gameplayfix_downtracesupportsongroundflag.integer)
2338         if(!(clip & 1))
2339         {
2340                 // only try this if there was no floor in the way in the trace (no,
2341                 // this check seems to be not REALLY necessary, because if clip & 1,
2342                 // our trace will hit that thing too)
2343                 VectorSet(upmove, PRVM_serveredictvector(ent, origin)[0], PRVM_serveredictvector(ent, origin)[1], PRVM_serveredictvector(ent, origin)[2] + 1);
2344                 VectorSet(downmove, PRVM_serveredictvector(ent, origin)[0], PRVM_serveredictvector(ent, origin)[1], PRVM_serveredictvector(ent, origin)[2] - 1);
2345                 if (PRVM_serveredictfloat(ent, movetype) == MOVETYPE_FLYMISSILE)
2346                         type = MOVE_MISSILE;
2347                 else if (PRVM_serveredictfloat(ent, movetype) == MOVETYPE_FLY_WORLDONLY)
2348                         type = MOVE_WORLDONLY;
2349                 else if (PRVM_serveredictfloat(ent, solid) == SOLID_TRIGGER || PRVM_serveredictfloat(ent, solid) == SOLID_NOT)
2350                         type = MOVE_NOMONSTERS; // only clip against bmodels
2351                 else
2352                         type = MOVE_NORMAL;
2353                 VectorCopy(PRVM_serveredictvector(ent, mins), entmins);
2354                 VectorCopy(PRVM_serveredictvector(ent, maxs), entmaxs);
2355                 trace = SV_TraceBox(upmove, entmins, entmaxs, downmove, type, ent, SV_GenericHitSuperContentsMask(ent), skipsupercontentsmask, skipmaterialflagsmask, collision_extendmovelength.value);
2356                 if(trace.fraction < 1 && trace.plane.normal[2] > 0.7)
2357                 {
2358                         clip |= 1; // but we HAVE found a floor
2359                         // set groundentity so we get carried when walking onto a mover with sv_gameplayfix_nogravityonground
2360                         PRVM_serveredictedict(ent, groundentity) = PRVM_EDICT_TO_PROG(trace.ent);
2361                 }
2362         }
2363
2364         // if the move did not hit the ground at any point, we're not on ground
2365         if(!(clip & 1))
2366                 PRVM_serveredictfloat(ent, flags) = (int)PRVM_serveredictfloat(ent, flags) & ~FL_ONGROUND;
2367
2368         SV_CheckVelocity(ent);
2369         SV_LinkEdict(ent);
2370         SV_LinkEdict_TouchAreaGrid(ent);
2371
2372         if(clip & 8) // teleport
2373                 return;
2374
2375         if ((int)PRVM_serveredictfloat(ent, flags) & FL_WATERJUMP)
2376                 return;
2377
2378         if (sv_nostep.integer)
2379                 return;
2380
2381         VectorCopy(PRVM_serveredictvector(ent, origin), originalmove_origin);
2382         VectorCopy(PRVM_serveredictvector(ent, velocity), originalmove_velocity);
2383         //originalmove_clip = clip;
2384         originalmove_flags = (int)PRVM_serveredictfloat(ent, flags);
2385         originalmove_groundentity = PRVM_serveredictedict(ent, groundentity);
2386
2387         // if move didn't block on a step, return
2388         if (clip & 2)
2389         {
2390                 // if move was not trying to move into the step, return
2391                 if (fabs(start_velocity[0]) < 0.03125 && fabs(start_velocity[1]) < 0.03125)
2392                         return;
2393
2394                 if (PRVM_serveredictfloat(ent, movetype) != MOVETYPE_FLY)
2395                 {
2396                         // return if gibbed by a trigger
2397                         if (PRVM_serveredictfloat(ent, movetype) != MOVETYPE_WALK)
2398                                 return;
2399
2400                         // return if attempting to jump while airborn (unless sv_jumpstep)
2401                         if (!sv_jumpstep.integer)
2402                                 if (!oldonground && PRVM_serveredictfloat(ent, waterlevel) == 0)
2403                                         return;
2404                 }
2405
2406                 // try moving up and forward to go up a step
2407                 // back to start pos
2408                 VectorCopy (start_origin, PRVM_serveredictvector(ent, origin));
2409                 VectorCopy (start_velocity, PRVM_serveredictvector(ent, velocity));
2410
2411                 // move up
2412                 VectorClear (upmove);
2413                 upmove[2] = sv_stepheight.value;
2414                 if(!SV_PushEntity(&trace, ent, upmove, true))
2415                 {
2416                         // we got teleported when upstepping... must abort the move
2417                         return;
2418                 }
2419
2420                 // move forward
2421                 PRVM_serveredictvector(ent, velocity)[2] = 0;
2422                 clip = SV_FlyMove (ent, sv.frametime, applygravity, stepnormal, hitsupercontentsmask, skipsupercontentsmask, skipmaterialflagsmask, 0);
2423                 PRVM_serveredictvector(ent, velocity)[2] += start_velocity[2];
2424                 if(clip & 8)
2425                 {
2426                         // we got teleported when upstepping... must abort the move
2427                         // note that z velocity handling may not be what QC expects here, but we cannot help it
2428                         return;
2429                 }
2430
2431                 SV_CheckVelocity(ent);
2432                 SV_LinkEdict(ent);
2433                 SV_LinkEdict_TouchAreaGrid(ent);
2434
2435                 // check for stuckness, possibly due to the limited precision of floats
2436                 // in the clipping hulls
2437                 if (clip
2438                  && fabs(originalmove_origin[1] - PRVM_serveredictvector(ent, origin)[1]) < 0.03125
2439                  && fabs(originalmove_origin[0] - PRVM_serveredictvector(ent, origin)[0]) < 0.03125)
2440                 {
2441                         //Con_Printf("wall\n");
2442                         // stepping up didn't make any progress, revert to original move
2443                         VectorCopy(originalmove_origin, PRVM_serveredictvector(ent, origin));
2444                         VectorCopy(originalmove_velocity, PRVM_serveredictvector(ent, velocity));
2445                         //clip = originalmove_clip;
2446                         PRVM_serveredictfloat(ent, flags) = originalmove_flags;
2447                         PRVM_serveredictedict(ent, groundentity) = originalmove_groundentity;
2448                         // now try to unstick if needed
2449                         //clip = SV_TryUnstick (ent, oldvel);
2450                         return;
2451                 }
2452
2453                 //Con_Printf("step - ");
2454
2455                 // extra friction based on view angle
2456                 if (clip & 2 && sv_wallfriction.integer)
2457                         SV_WallFriction (ent, stepnormal);
2458         }
2459         // don't do the down move if stepdown is disabled, moving upward, not in water, or the move started offground or ended onground
2460         else if (!sv_gameplayfix_stepdown.integer || PRVM_serveredictfloat(ent, waterlevel) >= 3 || start_velocity[2] >= (1.0 / 32.0) || !oldonground || ((int)PRVM_serveredictfloat(ent, flags) & FL_ONGROUND))
2461                 return;
2462
2463         // move down
2464         VectorClear (downmove);
2465         downmove[2] = -sv_stepheight.value + start_velocity[2]*sv.frametime;
2466         if(!SV_PushEntity (&downtrace, ent, downmove, true))
2467         {
2468                 // we got teleported when downstepping... must abort the move
2469                 return;
2470         }
2471
2472         if (downtrace.fraction < 1 && downtrace.plane.normal[2] > 0.7)
2473         {
2474                 // this has been disabled so that you can't jump when you are stepping
2475                 // up while already jumping (also known as the Quake2 double jump bug)
2476 #if 0
2477                 // LadyHavoc: disabled this check so you can walk on monsters/players
2478                 //if (PRVM_serveredictfloat(ent, solid) == SOLID_BSP)
2479                 {
2480                         //Con_Printf("onground\n");
2481                         PRVM_serveredictfloat(ent, flags) =     (int)PRVM_serveredictfloat(ent, flags) | FL_ONGROUND;
2482                         PRVM_serveredictedict(ent, groundentity) = PRVM_EDICT_TO_PROG(downtrace.ent);
2483                 }
2484 #endif
2485         }
2486         else
2487         {
2488                 //Con_Printf("slope\n");
2489                 // if the push down didn't end up on good ground, use the move without
2490                 // the step up.  This happens near wall / slope combinations, and can
2491                 // cause the player to hop up higher on a slope too steep to climb
2492                 VectorCopy(originalmove_origin, PRVM_serveredictvector(ent, origin));
2493                 VectorCopy(originalmove_velocity, PRVM_serveredictvector(ent, velocity));
2494                 //clip = originalmove_clip;
2495                 PRVM_serveredictfloat(ent, flags) = originalmove_flags;
2496                 PRVM_serveredictedict(ent, groundentity) = originalmove_groundentity;
2497         }
2498
2499         SV_CheckVelocity(ent);
2500         SV_LinkEdict(ent);
2501         SV_LinkEdict_TouchAreaGrid(ent);
2502 }
2503
2504 //============================================================================
2505
2506 /*
2507 =============
2508 SV_Physics_Follow
2509
2510 Entities that are "stuck" to another entity
2511 =============
2512 */
2513 static void SV_Physics_Follow (prvm_edict_t *ent)
2514 {
2515         prvm_prog_t *prog = SVVM_prog;
2516         vec3_t vf, vr, vu, angles, v;
2517         prvm_edict_t *e;
2518
2519         // LadyHavoc: implemented rotation on MOVETYPE_FOLLOW objects
2520         e = PRVM_PROG_TO_EDICT(PRVM_serveredictedict(ent, aiment));
2521         if (PRVM_serveredictvector(e, angles)[0] == PRVM_serveredictvector(ent, punchangle)[0] && PRVM_serveredictvector(e, angles)[1] == PRVM_serveredictvector(ent, punchangle)[1] && PRVM_serveredictvector(e, angles)[2] == PRVM_serveredictvector(ent, punchangle)[2])
2522         {
2523                 // quick case for no rotation
2524                 VectorAdd(PRVM_serveredictvector(e, origin), PRVM_serveredictvector(ent, view_ofs), PRVM_serveredictvector(ent, origin));
2525         }
2526         else
2527         {
2528                 angles[0] = -PRVM_serveredictvector(ent, punchangle)[0];
2529                 angles[1] =  PRVM_serveredictvector(ent, punchangle)[1];
2530                 angles[2] =  PRVM_serveredictvector(ent, punchangle)[2];
2531                 AngleVectors (angles, vf, vr, vu);
2532                 v[0] = PRVM_serveredictvector(ent, view_ofs)[0] * vf[0] + PRVM_serveredictvector(ent, view_ofs)[1] * vr[0] + PRVM_serveredictvector(ent, view_ofs)[2] * vu[0];
2533                 v[1] = PRVM_serveredictvector(ent, view_ofs)[0] * vf[1] + PRVM_serveredictvector(ent, view_ofs)[1] * vr[1] + PRVM_serveredictvector(ent, view_ofs)[2] * vu[1];
2534                 v[2] = PRVM_serveredictvector(ent, view_ofs)[0] * vf[2] + PRVM_serveredictvector(ent, view_ofs)[1] * vr[2] + PRVM_serveredictvector(ent, view_ofs)[2] * vu[2];
2535                 angles[0] = -PRVM_serveredictvector(e, angles)[0];
2536                 angles[1] =  PRVM_serveredictvector(e, angles)[1];
2537                 angles[2] =  PRVM_serveredictvector(e, angles)[2];
2538                 AngleVectors (angles, vf, vr, vu);
2539                 PRVM_serveredictvector(ent, origin)[0] = v[0] * vf[0] + v[1] * vf[1] + v[2] * vf[2] + PRVM_serveredictvector(e, origin)[0];
2540                 PRVM_serveredictvector(ent, origin)[1] = v[0] * vr[0] + v[1] * vr[1] + v[2] * vr[2] + PRVM_serveredictvector(e, origin)[1];
2541                 PRVM_serveredictvector(ent, origin)[2] = v[0] * vu[0] + v[1] * vu[1] + v[2] * vu[2] + PRVM_serveredictvector(e, origin)[2];
2542         }
2543         VectorAdd (PRVM_serveredictvector(e, angles), PRVM_serveredictvector(ent, v_angle), PRVM_serveredictvector(ent, angles));
2544         SV_LinkEdict(ent);
2545         //SV_LinkEdict_TouchAreaGrid(ent);
2546 }
2547
2548 /*
2549 ==============================================================================
2550
2551 TOSS / BOUNCE
2552
2553 ==============================================================================
2554 */
2555
2556 /*
2557 =============
2558 SV_CheckWaterTransition
2559
2560 =============
2561 */
2562 static void SV_CheckWaterTransition (prvm_edict_t *ent)
2563 {
2564         vec3_t entorigin;
2565         prvm_prog_t *prog = SVVM_prog;
2566         // LadyHavoc: bugfixes in this function are keyed to the sv_gameplayfix_bugfixedcheckwatertransition cvar - if this cvar is 0 then all the original bugs should be reenabled for compatibility
2567         int cont;
2568         VectorCopy(PRVM_serveredictvector(ent, origin), entorigin);
2569         cont = Mod_Q1BSP_NativeContentsFromSuperContents(SV_PointSuperContents(entorigin));
2570         if (!PRVM_serveredictfloat(ent, watertype))
2571         {
2572                 // just spawned here
2573                 if (!sv_gameplayfix_fixedcheckwatertransition.integer)
2574                 {
2575                         PRVM_serveredictfloat(ent, watertype) = cont;
2576                         PRVM_serveredictfloat(ent, waterlevel) = 1;
2577                         return;
2578                 }
2579         }
2580         // DRESK - Support for Entity Contents Transition Event
2581         // NOTE: Call here BEFORE updating the watertype below,
2582         // and suppress watersplash sound if a valid function
2583         // call was made to allow for custom "splash" sounds.
2584         else if( !SV_CheckContentsTransition(ent, cont) )
2585         { // Contents Transition Function Invalid; Potentially Play Water Sound
2586                 // check if the entity crossed into or out of water
2587                 if (sv_sound_watersplash.string && ((PRVM_serveredictfloat(ent, watertype) == CONTENTS_WATER || PRVM_serveredictfloat(ent, watertype) == CONTENTS_SLIME) != (cont == CONTENTS_WATER || cont == CONTENTS_SLIME)))
2588                         SV_StartSound (ent, 0, sv_sound_watersplash.string, 255, 1, false, 1.0f);
2589         }
2590
2591         if (cont <= CONTENTS_WATER)
2592         {
2593                 PRVM_serveredictfloat(ent, watertype) = cont;
2594                 PRVM_serveredictfloat(ent, waterlevel) = 1;
2595         }
2596         else
2597         {
2598                 PRVM_serveredictfloat(ent, watertype) = CONTENTS_EMPTY;
2599                 PRVM_serveredictfloat(ent, waterlevel) = sv_gameplayfix_fixedcheckwatertransition.integer ? 0 : cont;
2600         }
2601 }
2602
2603 /*
2604 =============
2605 SV_Physics_Toss
2606
2607 Toss, bounce, and fly movement.  When onground, do nothing.
2608 =============
2609 */
2610
2611 void SV_Physics_Toss (prvm_edict_t *ent)
2612 {
2613         prvm_prog_t *prog = SVVM_prog;
2614         trace_t trace;
2615         vec3_t move;
2616         vec_t movetime;
2617         int bump;
2618         prvm_edict_t *groundentity;
2619         float d, ent_gravity;
2620         float bouncefactor;
2621         float bouncestop;
2622
2623 // if onground, return without moving
2624         if ((int)PRVM_serveredictfloat(ent, flags) & FL_ONGROUND)
2625         {
2626                 groundentity = PRVM_PROG_TO_EDICT(PRVM_serveredictedict(ent, groundentity));
2627                 if (PRVM_serveredictvector(ent, velocity)[2] >= (1.0 / 32.0) && sv_gameplayfix_upwardvelocityclearsongroundflag.integer)
2628                 {
2629                         // don't stick to ground if onground and moving upward
2630                         PRVM_serveredictfloat(ent, flags) -= FL_ONGROUND;
2631                 }
2632                 else if (!PRVM_serveredictedict(ent, groundentity) || !sv_gameplayfix_noairborncorpse.integer)
2633                 {
2634                         // we can trust FL_ONGROUND if groundentity is world because it never moves
2635                         return;
2636                 }
2637                 else if (ent->priv.server->suspendedinairflag && groundentity->free)
2638                 {
2639                         // if ent was supported by a brush model on previous frame,
2640                         // and groundentity is now freed, set groundentity to 0 (world)
2641                         // which leaves it suspended in the air
2642                         PRVM_serveredictedict(ent, groundentity) = 0;
2643                         if (sv_gameplayfix_noairborncorpse_allowsuspendeditems.integer)
2644                                 return;
2645                 }
2646                 else if (BoxesOverlap(ent->priv.server->cullmins, ent->priv.server->cullmaxs, groundentity->priv.server->cullmins, groundentity->priv.server->cullmaxs))
2647                 {
2648                         // don't slide if still touching the groundentity
2649                         return;
2650                 }
2651         }
2652         ent->priv.server->suspendedinairflag = false;
2653
2654         SV_CheckVelocity (ent);
2655
2656 // add gravity
2657         if (PRVM_serveredictfloat(ent, movetype) == MOVETYPE_TOSS || PRVM_serveredictfloat(ent, movetype) == MOVETYPE_BOUNCE)
2658                 PRVM_serveredictvector(ent, velocity)[2] -= SV_Gravity(ent);
2659
2660 // move angles
2661         VectorMA (PRVM_serveredictvector(ent, angles), sv.frametime, PRVM_serveredictvector(ent, avelocity), PRVM_serveredictvector(ent, angles));
2662
2663         movetime = sv.frametime;
2664         for (bump = 0;bump < MAX_CLIP_PLANES && movetime > 0;bump++)
2665         {
2666         // move origin
2667                 VectorScale(PRVM_serveredictvector(ent, velocity), movetime, move);
2668                 if(!SV_PushEntity(&trace, ent, move, true))
2669                         return; // teleported
2670                 if (ent->free)
2671                         return;
2672                 if (trace.bmodelstartsolid && sv_gameplayfix_unstickentities.integer)
2673                 {
2674                         // try to unstick the entity
2675                         SV_UnstickEntity(ent);
2676                         if(!SV_PushEntity(&trace, ent, move, true))
2677                                 return; // teleported
2678                         if (ent->free)
2679                                 return;
2680                 }
2681                 if (trace.fraction == 1)
2682                         break;
2683                 movetime *= 1 - min(1, trace.fraction);
2684                 switch((int)PRVM_serveredictfloat(ent, movetype))
2685                 {
2686                 case MOVETYPE_BOUNCEMISSILE:
2687                         bouncefactor = PRVM_serveredictfloat(ent, bouncefactor);
2688                         if (!bouncefactor)
2689                                 bouncefactor = 1.0f;
2690
2691                         ClipVelocity(PRVM_serveredictvector(ent, velocity), trace.plane.normal, PRVM_serveredictvector(ent, velocity), 1 + bouncefactor);
2692                         PRVM_serveredictfloat(ent, flags) = (int)PRVM_serveredictfloat(ent, flags) & ~FL_ONGROUND;
2693                         if (!sv_gameplayfix_slidemoveprojectiles.integer)
2694                                 movetime = 0;
2695                         break;
2696                 case MOVETYPE_BOUNCE:
2697                         bouncefactor = PRVM_serveredictfloat(ent, bouncefactor);
2698                         if (!bouncefactor)
2699                                 bouncefactor = 0.5f;
2700
2701                         bouncestop = PRVM_serveredictfloat(ent, bouncestop);
2702                         if (!bouncestop)
2703                                 bouncestop = 60.0f / 800.0f;
2704
2705                         ClipVelocity(PRVM_serveredictvector(ent, velocity), trace.plane.normal, PRVM_serveredictvector(ent, velocity), 1 + bouncefactor);
2706                         ent_gravity = PRVM_serveredictfloat(ent, gravity);
2707                         if (!ent_gravity)
2708                                 ent_gravity = 1.0f;
2709                         // LadyHavoc: fixed grenades not bouncing when fired down a slope
2710                         if (sv_gameplayfix_grenadebouncedownslopes.integer)
2711                                 d = fabs(DotProduct(trace.plane.normal, PRVM_serveredictvector(ent, velocity)));
2712                         else
2713                                 d = PRVM_serveredictvector(ent, velocity)[2];
2714                         if (trace.plane.normal[2] > 0.7 && d < sv_gravity.value * bouncestop * ent_gravity)
2715                         {
2716                                 PRVM_serveredictfloat(ent, flags) = (int)PRVM_serveredictfloat(ent, flags) | FL_ONGROUND;
2717                                 PRVM_serveredictedict(ent, groundentity) = PRVM_EDICT_TO_PROG(trace.ent);
2718                                 VectorClear(PRVM_serveredictvector(ent, velocity));
2719                                 VectorClear(PRVM_serveredictvector(ent, avelocity));
2720                                 movetime = 0;
2721                         }
2722                         else
2723                         {
2724                                 PRVM_serveredictfloat(ent, flags) = (int)PRVM_serveredictfloat(ent, flags) & ~FL_ONGROUND;
2725                                 if (!sv_gameplayfix_slidemoveprojectiles.integer)
2726                                         movetime = 0;
2727                         }
2728                         break;
2729                 default:
2730                         ClipVelocity (PRVM_serveredictvector(ent, velocity), trace.plane.normal, PRVM_serveredictvector(ent, velocity), 1.0);
2731                         if (trace.plane.normal[2] > 0.7)
2732                         {
2733                                 PRVM_serveredictfloat(ent, flags) = (int)PRVM_serveredictfloat(ent, flags) | FL_ONGROUND;
2734                                 PRVM_serveredictedict(ent, groundentity) = PRVM_EDICT_TO_PROG(trace.ent);
2735                                 if (PRVM_serveredictfloat(((prvm_edict_t *)trace.ent), solid) == SOLID_BSP)
2736                                         ent->priv.server->suspendedinairflag = true;
2737                                 VectorClear (PRVM_serveredictvector(ent, velocity));
2738                                 VectorClear (PRVM_serveredictvector(ent, avelocity));
2739                                 movetime = 0;
2740                         }
2741                         else
2742                         {
2743                                 PRVM_serveredictfloat(ent, flags) = (int)PRVM_serveredictfloat(ent, flags) & ~FL_ONGROUND;
2744                                 if (!sv_gameplayfix_slidemoveprojectiles.integer)
2745                                         movetime = 0;
2746                         }
2747                         break;
2748                 }
2749         }
2750
2751 // check for in water
2752         SV_CheckWaterTransition (ent);
2753 }
2754
2755 /*
2756 ===============================================================================
2757
2758 STEPPING MOVEMENT
2759
2760 ===============================================================================
2761 */
2762
2763 /*
2764 =============
2765 SV_Physics_Step
2766
2767 Monsters freefall when they don't have a ground entity, otherwise
2768 all movement is done with discrete steps.
2769
2770 This is also used for objects that have become still on the ground, but
2771 will fall if the floor is pulled out from under them.
2772 =============
2773 */
2774 static void SV_Physics_Step (prvm_edict_t *ent)
2775 {
2776         prvm_prog_t *prog = SVVM_prog;
2777         int flags = (int)PRVM_serveredictfloat(ent, flags);
2778
2779         // DRESK
2780         // Backup Velocity in the event that movetypesteplandevent is called,
2781         // to provide a parameter with the entity's velocity at impact.
2782         vec3_t backupVelocity;
2783         VectorCopy(PRVM_serveredictvector(ent, velocity), backupVelocity);
2784         // don't fall at all if fly/swim
2785         if (!(flags & (FL_FLY | FL_SWIM)))
2786         {
2787                 if (flags & FL_ONGROUND)
2788                 {
2789                         // freefall if onground and moving upward
2790                         // freefall if not standing on a world surface (it may be a lift or trap door)
2791                         if (PRVM_serveredictvector(ent, velocity)[2] >= (1.0 / 32.0) && sv_gameplayfix_upwardvelocityclearsongroundflag.integer)
2792                         {
2793                                 PRVM_serveredictfloat(ent, flags) -= FL_ONGROUND;
2794                                 SV_CheckVelocity(ent);
2795                                 SV_FlyMove(ent, sv.frametime, true, NULL, SV_GenericHitSuperContentsMask(ent), 0, 0, 0);
2796                                 SV_LinkEdict(ent);
2797                                 SV_LinkEdict_TouchAreaGrid(ent);
2798                                 ent->priv.server->waterposition_forceupdate = true;
2799                         }
2800                 }
2801                 else
2802                 {
2803                         // freefall if not onground
2804                         int hitsound = PRVM_serveredictvector(ent, velocity)[2] < sv_gravity.value * -0.1;
2805
2806                         SV_CheckVelocity(ent);
2807                         SV_FlyMove(ent, sv.frametime, true, NULL, SV_GenericHitSuperContentsMask(ent), 0, 0, 0);
2808                         SV_LinkEdict(ent);
2809                         SV_LinkEdict_TouchAreaGrid(ent);
2810
2811                         // just hit ground
2812                         if (hitsound && (int)PRVM_serveredictfloat(ent, flags) & FL_ONGROUND)
2813                         {
2814                                 // DRESK - Check for Entity Land Event Function
2815                                 if(PRVM_serveredictfunction(ent, movetypesteplandevent))
2816                                 { // Valid Function; Execute
2817                                         // Prepare Parameters
2818                                         // Assign Velocity at Impact
2819                                         PRVM_G_VECTOR(OFS_PARM0)[0] = backupVelocity[0];
2820                                         PRVM_G_VECTOR(OFS_PARM0)[1] = backupVelocity[1];
2821                                         PRVM_G_VECTOR(OFS_PARM0)[2] = backupVelocity[2];
2822                                         // Assign Self
2823                                         PRVM_serverglobaledict(self) = PRVM_EDICT_TO_PROG(ent);
2824                                         // Set Time
2825                                         PRVM_serverglobalfloat(time) = sv.time;
2826                                         // Execute VM Function
2827                                         prog->ExecuteProgram(prog, PRVM_serveredictfunction(ent, movetypesteplandevent), "movetypesteplandevent: NULL function");
2828                                 }
2829                                 else
2830                                 // Check for Engine Landing Sound
2831                                 if(sv_sound_land.string)
2832                                         SV_StartSound(ent, 0, sv_sound_land.string, 255, 1, false, 1.0f);
2833                         }
2834                         ent->priv.server->waterposition_forceupdate = true;
2835                 }
2836         }
2837 }
2838
2839 //============================================================================
2840
2841 static void SV_Physics_Entity (prvm_edict_t *ent)
2842 {
2843         prvm_prog_t *prog = SVVM_prog;
2844         // don't run think/move on newly spawned projectiles as it messes up
2845         // movement interpolation and rocket trails, and is inconsistent with
2846         // respect to entities spawned in the same frame
2847         // (if an ent spawns a higher numbered ent, it moves in the same frame,
2848         //  but if it spawns a lower numbered ent, it doesn't - this never moves
2849         //  ents in the first frame regardless)
2850         qbool runmove = ent->priv.server->move;
2851         ent->priv.server->move = true;
2852         if (!runmove && sv_gameplayfix_delayprojectiles.integer > 0)
2853                 return;
2854         switch ((int) PRVM_serveredictfloat(ent, movetype))
2855         {
2856         case MOVETYPE_PUSH:
2857         case MOVETYPE_FAKEPUSH:
2858                 SV_Physics_Pusher (ent);
2859                 break;
2860         case MOVETYPE_NONE:
2861                 // LadyHavoc: manually inlined the thinktime check here because MOVETYPE_NONE is used on so many objects
2862                 if (PRVM_serveredictfloat(ent, nextthink) > 0 && PRVM_serveredictfloat(ent, nextthink) <= sv.time + sv.frametime)
2863                         SV_RunThink (ent);
2864                 break;
2865         case MOVETYPE_FOLLOW:
2866                 if(SV_RunThink(ent))
2867                         SV_Physics_Follow (ent);
2868                 break;
2869         case MOVETYPE_NOCLIP:
2870                 if (SV_RunThink(ent))
2871                 {
2872                         SV_CheckWater(ent);
2873                         VectorMA(PRVM_serveredictvector(ent, origin), sv.frametime, PRVM_serveredictvector(ent, velocity), PRVM_serveredictvector(ent, origin));
2874                         VectorMA(PRVM_serveredictvector(ent, angles), sv.frametime, PRVM_serveredictvector(ent, avelocity), PRVM_serveredictvector(ent, angles));
2875                 }
2876                 SV_LinkEdict(ent);
2877                 break;
2878         case MOVETYPE_STEP:
2879                 SV_Physics_Step (ent);
2880                 // regular thinking
2881                 if (SV_RunThink(ent))
2882                 if (ent->priv.server->waterposition_forceupdate || !VectorCompare(PRVM_serveredictvector(ent, origin), ent->priv.server->waterposition_origin))
2883                 {
2884                         ent->priv.server->waterposition_forceupdate = false;
2885                         VectorCopy(PRVM_serveredictvector(ent, origin), ent->priv.server->waterposition_origin);
2886                         SV_CheckWaterTransition(ent);
2887                 }
2888                 break;
2889         case MOVETYPE_WALK:
2890                 if (SV_RunThink (ent))
2891                         SV_WalkMove (ent);
2892                 break;
2893         case MOVETYPE_TOSS:
2894         case MOVETYPE_BOUNCE:
2895         case MOVETYPE_BOUNCEMISSILE:
2896         case MOVETYPE_FLYMISSILE:
2897         case MOVETYPE_FLY:
2898         case MOVETYPE_FLY_WORLDONLY:
2899                 // regular thinking
2900                 if (SV_RunThink (ent))
2901                         SV_Physics_Toss (ent);
2902                 break;
2903         case MOVETYPE_PHYSICS:
2904                 if (SV_RunThink(ent))
2905                 {
2906                         SV_LinkEdict(ent);
2907                         SV_LinkEdict_TouchAreaGrid(ent);
2908                 }
2909                 break;
2910         default:
2911                 if((int) PRVM_serveredictfloat(ent, movetype) >= MOVETYPE_USER_FIRST && (int) PRVM_serveredictfloat(ent, movetype) <= MOVETYPE_USER_LAST)
2912                         break;
2913                 Con_Printf ("SV_Physics: bad movetype %i\n", (int)PRVM_serveredictfloat(ent, movetype));
2914                 break;
2915         }
2916 }
2917
2918 static void SV_Physics_ClientEntity_NoThink (prvm_edict_t *ent)
2919 {
2920         prvm_prog_t *prog = SVVM_prog;
2921
2922         // don't run think at all, that is done during server frames
2923         // instead, call the movetypes directly so they match client input
2924
2925         // This probably only makes sense for CSQC-networked (SendEntity field set) player entities
2926         switch ((int) PRVM_serveredictfloat(ent, movetype))
2927         {
2928         case MOVETYPE_PUSH:
2929         case MOVETYPE_FAKEPUSH:
2930                 // push physics relies heavily on think times and calls, and so cannot be predicted currently
2931                 Con_Printf ("SV_Physics_ClientEntity_NoThink: bad movetype %i\n", (int)PRVM_serveredictfloat(ent, movetype));
2932                 break;
2933         case MOVETYPE_NONE:
2934                 break;
2935         case MOVETYPE_FOLLOW:
2936                 SV_Physics_Follow (ent);
2937                 break;
2938         case MOVETYPE_NOCLIP:
2939                 VectorMA(PRVM_serveredictvector(ent, origin), sv.frametime, PRVM_serveredictvector(ent, velocity), PRVM_serveredictvector(ent, origin));
2940                 VectorMA(PRVM_serveredictvector(ent, angles), sv.frametime, PRVM_serveredictvector(ent, avelocity), PRVM_serveredictvector(ent, angles));
2941                 break;
2942         case MOVETYPE_STEP:
2943                 SV_Physics_Step (ent);
2944                 break;
2945         case MOVETYPE_WALK:
2946                 SV_WalkMove (ent);
2947                 break;
2948         case MOVETYPE_TOSS:
2949         case MOVETYPE_BOUNCE:
2950         case MOVETYPE_BOUNCEMISSILE:
2951         case MOVETYPE_FLYMISSILE:
2952                 SV_Physics_Toss (ent);
2953                 break;
2954         case MOVETYPE_FLY:
2955         case MOVETYPE_FLY_WORLDONLY:
2956                 SV_WalkMove (ent);
2957                 break;
2958         case MOVETYPE_PHYSICS:
2959                 break;
2960         default:
2961                 if((int) PRVM_serveredictfloat(ent, movetype) >= MOVETYPE_USER_FIRST && (int) PRVM_serveredictfloat(ent, movetype) <= MOVETYPE_USER_LAST)
2962                         break;
2963                 Con_Printf ("SV_Physics_ClientEntity_NoThink: bad movetype %i\n", (int)PRVM_serveredictfloat(ent, movetype));
2964                 break;
2965         }
2966 }
2967
2968 void SV_Physics_ClientMove(void)
2969 {
2970         prvm_prog_t *prog = SVVM_prog;
2971         prvm_edict_t *ent;
2972         ent = host_client->edict;
2973
2974         // call player physics, this needs the proper frametime
2975         PRVM_serverglobalfloat(frametime) = sv.frametime;
2976         SV_PlayerPhysics();
2977
2978         // call standard client pre-think, with frametime = 0
2979         PRVM_serverglobalfloat(time) = sv.time;
2980         PRVM_serverglobalfloat(frametime) = 0;
2981         PRVM_serverglobaledict(self) = PRVM_EDICT_TO_PROG(ent);
2982         prog->ExecuteProgram(prog, PRVM_serverfunction(PlayerPreThink), "QC function PlayerPreThink is missing");
2983         PRVM_serverglobalfloat(frametime) = sv.frametime;
2984
2985         // make sure the velocity is sane (not a NaN)
2986         SV_CheckVelocity(ent);
2987
2988         // perform movetype behaviour
2989         // note: will always be MOVETYPE_WALK if disableclientprediction = 0
2990         SV_Physics_ClientEntity_NoThink (ent);
2991
2992         // call standard player post-think, with frametime = 0
2993         PRVM_serverglobalfloat(time) = sv.time;
2994         PRVM_serverglobalfloat(frametime) = 0;
2995         PRVM_serverglobaledict(self) = PRVM_EDICT_TO_PROG(ent);
2996         prog->ExecuteProgram(prog, PRVM_serverfunction(PlayerPostThink), "QC function PlayerPostThink is missing");
2997         PRVM_serverglobalfloat(frametime) = sv.frametime;
2998
2999         if(PRVM_serveredictfloat(ent, fixangle))
3000         {
3001                 // angle fixing was requested by physics code...
3002                 // so store the current angles for later use
3003                 VectorCopy(PRVM_serveredictvector(ent, angles), host_client->fixangle_angles);
3004                 host_client->fixangle_angles_set = true;
3005
3006                 // and clear fixangle for the next frame
3007                 PRVM_serveredictfloat(ent, fixangle) = 0;
3008         }
3009 }
3010
3011 static void SV_Physics_ClientEntity_PreThink(prvm_edict_t *ent)
3012 {
3013         prvm_prog_t *prog = SVVM_prog;
3014         // don't do physics on disconnected clients, FrikBot relies on this
3015         if (!host_client->begun)
3016                 return;
3017
3018         // make sure the velocity is sane (not a NaN)
3019         SV_CheckVelocity(ent);
3020
3021         // don't run physics here if running asynchronously
3022         if (host_client->clmovement_inputtimeout <= 0)
3023         {
3024                 SV_PlayerPhysics();
3025                 //host_client->cmd.time = max(host_client->cmd.time, sv.time);
3026         }
3027
3028         // make sure the velocity is still sane (not a NaN)
3029         SV_CheckVelocity(ent);
3030
3031         // call standard client pre-think
3032         PRVM_serverglobalfloat(time) = sv.time;
3033         PRVM_serverglobaledict(self) = PRVM_EDICT_TO_PROG(ent);
3034         prog->ExecuteProgram(prog, PRVM_serverfunction(PlayerPreThink), "QC function PlayerPreThink is missing");
3035
3036         // make sure the velocity is still sane (not a NaN)
3037         SV_CheckVelocity(ent);
3038 }
3039
3040 static void SV_Physics_ClientEntity_PostThink(prvm_edict_t *ent)
3041 {
3042         prvm_prog_t *prog = SVVM_prog;
3043         // don't do physics on disconnected clients, FrikBot relies on this
3044         if (!host_client->begun)
3045                 return;
3046
3047         // make sure the velocity is sane (not a NaN)
3048         SV_CheckVelocity(ent);
3049
3050         // call standard player post-think
3051         PRVM_serverglobalfloat(time) = sv.time;
3052         PRVM_serverglobaledict(self) = PRVM_EDICT_TO_PROG(ent);
3053         prog->ExecuteProgram(prog, PRVM_serverfunction(PlayerPostThink), "QC function PlayerPostThink is missing");
3054
3055         // make sure the velocity is still sane (not a NaN)
3056         SV_CheckVelocity(ent);
3057
3058         if(PRVM_serveredictfloat(ent, fixangle))
3059         {
3060                 // angle fixing was requested by physics code...
3061                 // so store the current angles for later use
3062                 VectorCopy(PRVM_serveredictvector(ent, angles), host_client->fixangle_angles);
3063                 host_client->fixangle_angles_set = true;
3064
3065                 // and clear fixangle for the next frame
3066                 PRVM_serveredictfloat(ent, fixangle) = 0;
3067         }
3068
3069         // decrement the countdown variable used to decide when to go back to
3070         // synchronous physics
3071         if (host_client->clmovement_inputtimeout > sv.frametime)
3072                 host_client->clmovement_inputtimeout -= sv.frametime;
3073         else
3074                 host_client->clmovement_inputtimeout = 0;
3075 }
3076
3077 static void SV_Physics_ClientEntity(prvm_edict_t *ent)
3078 {
3079         prvm_prog_t *prog = SVVM_prog;
3080         // don't do physics on disconnected clients, FrikBot relies on this
3081         if (!host_client->begun)
3082         {
3083                 memset(&host_client->cmd, 0, sizeof(host_client->cmd));
3084                 return;
3085         }
3086
3087         // make sure the velocity is sane (not a NaN)
3088         SV_CheckVelocity(ent);
3089
3090         switch ((int) PRVM_serveredictfloat(ent, movetype))
3091         {
3092         case MOVETYPE_PUSH:
3093         case MOVETYPE_FAKEPUSH:
3094                 SV_Physics_Pusher (ent);
3095                 break;
3096         case MOVETYPE_NONE:
3097                 // LadyHavoc: manually inlined the thinktime check here because MOVETYPE_NONE is used on so many objects
3098                 if (PRVM_serveredictfloat(ent, nextthink) > 0 && PRVM_serveredictfloat(ent, nextthink) <= sv.time + sv.frametime)
3099                         SV_RunThink (ent);
3100                 break;
3101         case MOVETYPE_FOLLOW:
3102                 SV_RunThink (ent);
3103                 if (host_client->clmovement_inputtimeout <= 0) // don't run physics here if running asynchronously
3104                         SV_Physics_Follow (ent);
3105                 break;
3106         case MOVETYPE_NOCLIP:
3107                 SV_RunThink(ent);
3108                 if (host_client->clmovement_inputtimeout <= 0) // don't run physics here if running asynchronously
3109                 {
3110                         SV_CheckWater(ent);
3111                         VectorMA(PRVM_serveredictvector(ent, origin), sv.frametime, PRVM_serveredictvector(ent, velocity), PRVM_serveredictvector(ent, origin));
3112                         VectorMA(PRVM_serveredictvector(ent, angles), sv.frametime, PRVM_serveredictvector(ent, avelocity), PRVM_serveredictvector(ent, angles));
3113                 }
3114                 break;
3115         case MOVETYPE_STEP:
3116                 if (host_client->clmovement_inputtimeout <= 0) // don't run physics here if running asynchronously
3117                         SV_Physics_Step (ent);
3118                 if (SV_RunThink(ent))
3119                 if (ent->priv.server->waterposition_forceupdate || !VectorCompare(PRVM_serveredictvector(ent, origin), ent->priv.server->waterposition_origin))
3120                 {
3121                         ent->priv.server->waterposition_forceupdate = false;
3122                         VectorCopy(PRVM_serveredictvector(ent, origin), ent->priv.server->waterposition_origin);
3123                         SV_CheckWaterTransition(ent);
3124                 }
3125                 break;
3126         case MOVETYPE_WALK:
3127                 SV_RunThink (ent);
3128                 // don't run physics here if running asynchronously
3129                 if (host_client->clmovement_inputtimeout <= 0)
3130                         SV_WalkMove (ent);
3131                 break;
3132         case MOVETYPE_TOSS:
3133         case MOVETYPE_BOUNCE:
3134         case MOVETYPE_BOUNCEMISSILE:
3135         case MOVETYPE_FLYMISSILE:
3136                 // regular thinking
3137                 SV_RunThink (ent);
3138                 if (host_client->clmovement_inputtimeout <= 0) // don't run physics here if running asynchronously
3139                         SV_Physics_Toss (ent);
3140                 break;
3141         case MOVETYPE_FLY:
3142         case MOVETYPE_FLY_WORLDONLY:
3143                 SV_RunThink (ent);
3144                 if (host_client->clmovement_inputtimeout <= 0) // don't run physics here if running asynchronously
3145                         SV_WalkMove (ent);
3146                 break;
3147         case MOVETYPE_PHYSICS:
3148                 SV_RunThink (ent);
3149                 break;
3150         default:
3151                 if((int) PRVM_serveredictfloat(ent, movetype) >= MOVETYPE_USER_FIRST && (int) PRVM_serveredictfloat(ent, movetype) <= MOVETYPE_USER_LAST)
3152                         break;
3153                 Con_Printf ("SV_Physics_ClientEntity: bad movetype %i\n", (int)PRVM_serveredictfloat(ent, movetype));
3154                 break;
3155         }
3156
3157         SV_CheckVelocity (ent);
3158
3159         SV_LinkEdict(ent);
3160         SV_LinkEdict_TouchAreaGrid(ent);
3161
3162         SV_CheckVelocity (ent);
3163 }
3164
3165 /*
3166 ================
3167 SV_Physics
3168
3169 ================
3170 */
3171 void SV_Physics (void)
3172 {
3173         prvm_prog_t *prog = SVVM_prog;
3174         int i;
3175         prvm_edict_t *ent;
3176
3177         // free memory for resources that are no longer referenced
3178         PRVM_GarbageCollection(prog);
3179
3180 // let the progs know that a new frame has started
3181         PRVM_serverglobaledict(self) = PRVM_EDICT_TO_PROG(prog->edicts);
3182         PRVM_serverglobaledict(other) = PRVM_EDICT_TO_PROG(prog->edicts);
3183         PRVM_serverglobalfloat(time) = sv.time;
3184         PRVM_serverglobalfloat(frametime) = sv.frametime;
3185         prog->ExecuteProgram(prog, PRVM_serverfunction(StartFrame), "QC function StartFrame is missing");
3186
3187 #ifdef USEODE
3188         // run physics engine
3189         World_Physics_Frame(&sv.world, sv.frametime, sv_gravity.value);
3190 #endif
3191
3192 //
3193 // treat each object in turn
3194 //
3195
3196         // if force_retouch, relink all the entities
3197         if (PRVM_serverglobalfloat(force_retouch) > 0)
3198                 for (i = 1, ent = PRVM_EDICT_NUM(i);i < prog->num_edicts;i++, ent = PRVM_NEXT_EDICT(ent))
3199                         if (!ent->free)
3200                                 SV_LinkEdict_TouchAreaGrid(ent); // force retouch even for stationary
3201
3202         if (sv_gameplayfix_consistentplayerprethink.integer)
3203         {
3204                 // run physics on the client entities in 3 stages
3205                 for (i = 1, ent = PRVM_EDICT_NUM(i), host_client = svs.clients;i <= svs.maxclients;i++, ent = PRVM_NEXT_EDICT(ent), host_client++)
3206                         if (!ent->free)
3207                                 SV_Physics_ClientEntity_PreThink(ent);
3208
3209                 for (i = 1, ent = PRVM_EDICT_NUM(i), host_client = svs.clients;i <= svs.maxclients;i++, ent = PRVM_NEXT_EDICT(ent), host_client++)
3210                         if (!ent->free)
3211                                 SV_Physics_ClientEntity(ent);
3212
3213                 for (i = 1, ent = PRVM_EDICT_NUM(i), host_client = svs.clients;i <= svs.maxclients;i++, ent = PRVM_NEXT_EDICT(ent), host_client++)
3214                         if (!ent->free)
3215                                 SV_Physics_ClientEntity_PostThink(ent);
3216         }
3217         else
3218         {
3219                 // run physics on the client entities
3220                 for (i = 1, ent = PRVM_EDICT_NUM(i), host_client = svs.clients;i <= svs.maxclients;i++, ent = PRVM_NEXT_EDICT(ent), host_client++)
3221                 {
3222                         if (!ent->free)
3223                         {
3224                                 SV_Physics_ClientEntity_PreThink(ent);
3225                                 SV_Physics_ClientEntity(ent);
3226                                 SV_Physics_ClientEntity_PostThink(ent);
3227                         }
3228                 }
3229         }
3230
3231         // run physics on all the non-client entities
3232         if (!sv_freezenonclients.integer)
3233         {
3234                 for (;i < prog->num_edicts;i++, ent = PRVM_NEXT_EDICT(ent))
3235                         if (!ent->free)
3236                                 SV_Physics_Entity(ent);
3237                 // make a second pass to see if any ents spawned this frame and make
3238                 // sure they run their move/think
3239                 if (sv_gameplayfix_delayprojectiles.integer < 0)
3240                         for (i = svs.maxclients + 1, ent = PRVM_EDICT_NUM(i);i < prog->num_edicts;i++, ent = PRVM_NEXT_EDICT(ent))
3241                                 if (!ent->priv.server->move && !ent->free)
3242                                         SV_Physics_Entity(ent);
3243         }
3244
3245         if (PRVM_serverglobalfloat(force_retouch) > 0)
3246                 PRVM_serverglobalfloat(force_retouch) = max(0, PRVM_serverglobalfloat(force_retouch) - 1);
3247
3248         // LadyHavoc: endframe support
3249         if (PRVM_serverfunction(EndFrame))
3250         {
3251                 PRVM_serverglobaledict(self) = PRVM_EDICT_TO_PROG(prog->edicts);
3252                 PRVM_serverglobaledict(other) = PRVM_EDICT_TO_PROG(prog->edicts);
3253                 PRVM_serverglobalfloat(time) = sv.time;
3254                 prog->ExecuteProgram(prog, PRVM_serverfunction(EndFrame), "QC function EndFrame is missing");
3255         }
3256
3257         // decrement prog->num_edicts if the highest number entities died
3258         for (;PRVM_ED_CanAlloc(prog, PRVM_EDICT_NUM(prog->num_edicts - 1));prog->num_edicts--);
3259
3260         if (!sv_freezenonclients.integer)
3261                 sv.time += sv.frametime;
3262 }