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 /*
1547 ============
1548 SV_PushEntity
1549
1550 Does not change the entities velocity at all
1551 The trace struct is filled with the trace that has been done.
1552 Returns true if the push did not result in the entity being teleported by QC code.
1553 ============
1554 */
1555 static qbool SV_PushEntity (trace_t *trace, prvm_edict_t *ent, vec3_t push, qbool dolink)
1556 {
1557         prvm_prog_t *prog = SVVM_prog;
1558         int solid;
1559         int movetype;
1560         int type;
1561         vec3_t mins, maxs;
1562         vec3_t start;
1563         vec3_t end;
1564
1565         solid = (int)PRVM_serveredictfloat(ent, solid);
1566         movetype = (int)PRVM_serveredictfloat(ent, movetype);
1567         VectorCopy(PRVM_serveredictvector(ent, mins), mins);
1568         VectorCopy(PRVM_serveredictvector(ent, maxs), maxs);
1569
1570         // move start position out of solids
1571         if (sv_gameplayfix_nudgeoutofsolid.integer && sv_gameplayfix_nudgeoutofsolid_separation.value >= 0)
1572         {
1573                 PHYS_NudgeOutOfSolid(prog, ent);
1574         }
1575
1576         VectorCopy(PRVM_serveredictvector(ent, origin), start);
1577         VectorAdd(start, push, end);
1578
1579         if (movetype == MOVETYPE_FLYMISSILE)
1580                 type = MOVE_MISSILE;
1581         else if (movetype == MOVETYPE_FLY_WORLDONLY)
1582                 type = MOVE_WORLDONLY;
1583         else if (solid == SOLID_TRIGGER || solid == SOLID_NOT)
1584                 type = MOVE_NOMONSTERS; // only clip against bmodels
1585         else
1586                 type = MOVE_NORMAL;
1587
1588         *trace = SV_TraceBox(start, mins, maxs, end, type, ent, SV_GenericHitSuperContentsMask(ent), 0, 0, collision_extendmovelength.value);
1589         // fail the move if stuck in world
1590         if (trace->worldstartsolid)
1591                 return true;
1592
1593         VectorCopy(trace->endpos, PRVM_serveredictvector(ent, origin));
1594
1595         ent->priv.required->mark = PRVM_EDICT_MARK_WAIT_FOR_SETORIGIN; // -2: setorigin running
1596
1597         SV_LinkEdict(ent);
1598
1599 #if 0
1600         if(!trace->startsolid)
1601         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)
1602         {
1603                 Con_Printf("something eeeeevil happened\n");
1604         }
1605 #endif
1606
1607         if (dolink)
1608                 SV_LinkEdict_TouchAreaGrid(ent);
1609
1610         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))))
1611                 SV_Impact (ent, trace);
1612
1613         if(ent->priv.required->mark == PRVM_EDICT_MARK_SETORIGIN_CAUGHT)
1614         {
1615                 ent->priv.required->mark = 0;
1616                 return false;
1617         }
1618         else if(ent->priv.required->mark == PRVM_EDICT_MARK_WAIT_FOR_SETORIGIN)
1619         {
1620                 ent->priv.required->mark = 0;
1621                 return true;
1622         }
1623         else
1624         {
1625                 Con_Printf("The edict mark had been overwritten! Please debug this.\n");
1626                 return true;
1627         }
1628 }
1629
1630
1631 /*
1632 ============
1633 SV_PushMove
1634
1635 ============
1636 */
1637 static void SV_PushMove (prvm_edict_t *pusher, float movetime)
1638 {
1639         prvm_prog_t *prog = SVVM_prog;
1640         int i, e, index;
1641         int pusherowner, pusherprog;
1642         int checkcontents;
1643         qbool rotated;
1644         float savesolid, movetime2, pushltime;
1645         vec3_t mins, maxs, move, move1, moveangle, pushorig, pushang, a, forward, left, up, org, pushermins, pushermaxs, checkorigin, checkmins, checkmaxs;
1646         int num_moved;
1647         int numcheckentities;
1648         static prvm_edict_t *checkentities[MAX_EDICTS];
1649         model_t *pushermodel;
1650         trace_t trace, trace2;
1651         matrix4x4_t pusherfinalmatrix, pusherfinalimatrix;
1652         static unsigned short moved_edicts[MAX_EDICTS];
1653         vec3_t pivot;
1654
1655         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])
1656         {
1657                 PRVM_serveredictfloat(pusher, ltime) += movetime;
1658                 return;
1659         }
1660
1661         switch ((int) PRVM_serveredictfloat(pusher, solid))
1662         {
1663         // LadyHavoc: valid pusher types
1664         case SOLID_BSP:
1665         case SOLID_BBOX:
1666         case SOLID_SLIDEBOX:
1667         case SOLID_CORPSE: // LadyHavoc: this would be weird...
1668                 break;
1669         // LadyHavoc: no collisions
1670         case SOLID_NOT:
1671         case SOLID_TRIGGER:
1672                 VectorMA (PRVM_serveredictvector(pusher, origin), movetime, PRVM_serveredictvector(pusher, velocity), PRVM_serveredictvector(pusher, origin));
1673                 VectorMA (PRVM_serveredictvector(pusher, angles), movetime, PRVM_serveredictvector(pusher, avelocity), PRVM_serveredictvector(pusher, angles));
1674                 PRVM_serveredictvector(pusher, angles)[0] -= 360.0 * floor(PRVM_serveredictvector(pusher, angles)[0] * (1.0 / 360.0));
1675                 PRVM_serveredictvector(pusher, angles)[1] -= 360.0 * floor(PRVM_serveredictvector(pusher, angles)[1] * (1.0 / 360.0));
1676                 PRVM_serveredictvector(pusher, angles)[2] -= 360.0 * floor(PRVM_serveredictvector(pusher, angles)[2] * (1.0 / 360.0));
1677                 PRVM_serveredictfloat(pusher, ltime) += movetime;
1678                 SV_LinkEdict(pusher);
1679                 return;
1680         default:
1681                 Con_Printf("SV_PushMove: entity #%i, unrecognized solid type %f\n", PRVM_NUM_FOR_EDICT(pusher), PRVM_serveredictfloat(pusher, solid));
1682                 return;
1683         }
1684         index = (int) PRVM_serveredictfloat(pusher, modelindex);
1685         if (index < 1 || index >= MAX_MODELS)
1686         {
1687                 Con_Printf("SV_PushMove: entity #%i has an invalid modelindex %f\n", PRVM_NUM_FOR_EDICT(pusher), PRVM_serveredictfloat(pusher, modelindex));
1688                 return;
1689         }
1690         pushermodel = SV_GetModelByIndex(index);
1691         pusherowner = PRVM_serveredictedict(pusher, owner);
1692         pusherprog = PRVM_EDICT_TO_PROG(pusher);
1693
1694         rotated = VectorLength2(PRVM_serveredictvector(pusher, angles)) + VectorLength2(PRVM_serveredictvector(pusher, avelocity)) > 0;
1695
1696         movetime2 = movetime;
1697         VectorScale(PRVM_serveredictvector(pusher, velocity), movetime2, move1);
1698         VectorScale(PRVM_serveredictvector(pusher, avelocity), movetime2, moveangle);
1699         if (moveangle[0] || moveangle[2])
1700         {
1701                 for (i = 0;i < 3;i++)
1702                 {
1703                         if (move1[i] > 0)
1704                         {
1705                                 mins[i] = pushermodel->rotatedmins[i] + PRVM_serveredictvector(pusher, origin)[i] - 1;
1706                                 maxs[i] = pushermodel->rotatedmaxs[i] + move1[i] + PRVM_serveredictvector(pusher, origin)[i] + 1;
1707                         }
1708                         else
1709                         {
1710                                 mins[i] = pushermodel->rotatedmins[i] + move1[i] + PRVM_serveredictvector(pusher, origin)[i] - 1;
1711                                 maxs[i] = pushermodel->rotatedmaxs[i] + PRVM_serveredictvector(pusher, origin)[i] + 1;
1712                         }
1713                 }
1714         }
1715         else if (moveangle[1])
1716         {
1717                 for (i = 0;i < 3;i++)
1718                 {
1719                         if (move1[i] > 0)
1720                         {
1721                                 mins[i] = pushermodel->yawmins[i] + PRVM_serveredictvector(pusher, origin)[i] - 1;
1722                                 maxs[i] = pushermodel->yawmaxs[i] + move1[i] + PRVM_serveredictvector(pusher, origin)[i] + 1;
1723                         }
1724                         else
1725                         {
1726                                 mins[i] = pushermodel->yawmins[i] + move1[i] + PRVM_serveredictvector(pusher, origin)[i] - 1;
1727                                 maxs[i] = pushermodel->yawmaxs[i] + PRVM_serveredictvector(pusher, origin)[i] + 1;
1728                         }
1729                 }
1730         }
1731         else
1732         {
1733                 for (i = 0;i < 3;i++)
1734                 {
1735                         if (move1[i] > 0)
1736                         {
1737                                 mins[i] = pushermodel->normalmins[i] + PRVM_serveredictvector(pusher, origin)[i] - 1;
1738                                 maxs[i] = pushermodel->normalmaxs[i] + move1[i] + PRVM_serveredictvector(pusher, origin)[i] + 1;
1739                         }
1740                         else
1741                         {
1742                                 mins[i] = pushermodel->normalmins[i] + move1[i] + PRVM_serveredictvector(pusher, origin)[i] - 1;
1743                                 maxs[i] = pushermodel->normalmaxs[i] + PRVM_serveredictvector(pusher, origin)[i] + 1;
1744                         }
1745                 }
1746         }
1747
1748         VectorNegate (moveangle, a);
1749         AngleVectorsFLU (a, forward, left, up);
1750
1751         VectorCopy (PRVM_serveredictvector(pusher, origin), pushorig);
1752         VectorCopy (PRVM_serveredictvector(pusher, angles), pushang);
1753         pushltime = PRVM_serveredictfloat(pusher, ltime);
1754
1755 // move the pusher to its final position
1756
1757         VectorMA (PRVM_serveredictvector(pusher, origin), movetime, PRVM_serveredictvector(pusher, velocity), PRVM_serveredictvector(pusher, origin));
1758         VectorMA (PRVM_serveredictvector(pusher, angles), movetime, PRVM_serveredictvector(pusher, avelocity), PRVM_serveredictvector(pusher, angles));
1759         PRVM_serveredictfloat(pusher, ltime) += movetime;
1760         SV_LinkEdict(pusher);
1761
1762         pushermodel = SV_GetModelFromEdict(pusher);
1763         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);
1764         Matrix4x4_Invert_Simple(&pusherfinalimatrix, &pusherfinalmatrix);
1765
1766         savesolid = PRVM_serveredictfloat(pusher, solid);
1767
1768 // see if any solid entities are inside the final position
1769         num_moved = 0;
1770
1771         if (PRVM_serveredictfloat(pusher, movetype) == MOVETYPE_FAKEPUSH) // Tenebrae's MOVETYPE_PUSH variant that doesn't push...
1772                 numcheckentities = 0;
1773         else // MOVETYPE_PUSH
1774                 numcheckentities = SV_EntitiesInBox(mins, maxs, MAX_EDICTS, checkentities);
1775         for (e = 0;e < numcheckentities;e++)
1776         {
1777                 prvm_edict_t *check = checkentities[e];
1778                 int movetype = (int)PRVM_serveredictfloat(check, movetype);
1779                 switch(movetype)
1780                 {
1781                 case MOVETYPE_NONE:
1782                 case MOVETYPE_PUSH:
1783                 case MOVETYPE_FOLLOW:
1784                 case MOVETYPE_NOCLIP:
1785                 case MOVETYPE_FLY_WORLDONLY:
1786                         continue;
1787                 default:
1788                         break;
1789                 }
1790
1791                 if (PRVM_serveredictedict(check, owner) == pusherprog)
1792                         continue;
1793
1794                 if (pusherowner == PRVM_EDICT_TO_PROG(check))
1795                         continue;
1796
1797                 //Con_Printf("%i %s ", PRVM_NUM_FOR_EDICT(check), PRVM_GetString(PRVM_serveredictstring(check, classname)));
1798
1799                 // tell any MOVETYPE_STEP entity that it may need to check for water transitions
1800                 check->priv.server->waterposition_forceupdate = true;
1801
1802                 checkcontents = SV_GenericHitSuperContentsMask(check);
1803
1804                 // if the entity is standing on the pusher, it will definitely be moved
1805                 // if the entity is not standing on the pusher, but is in the pusher's
1806                 // final position, move it
1807                 if (!((int)PRVM_serveredictfloat(check, flags) & FL_ONGROUND) || PRVM_PROG_TO_EDICT(PRVM_serveredictedict(check, groundentity)) != pusher)
1808                 {
1809                         VectorCopy(PRVM_serveredictvector(pusher, mins), pushermins);
1810                         VectorCopy(PRVM_serveredictvector(pusher, maxs), pushermaxs);
1811                         VectorCopy(PRVM_serveredictvector(check, origin), checkorigin);
1812                         VectorCopy(PRVM_serveredictvector(check, mins), checkmins);
1813                         VectorCopy(PRVM_serveredictvector(check, maxs), checkmaxs);
1814                         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);
1815                         //trace = SV_TraceBox(PRVM_serveredictvector(check, origin), PRVM_serveredictvector(check, mins), PRVM_serveredictvector(check, maxs), PRVM_serveredictvector(check, origin), MOVE_NOMONSTERS, check, checkcontents);
1816                         if (!trace.startsolid)
1817                         {
1818                                 //Con_Printf("- not in solid\n");
1819                                 continue;
1820                         }
1821                 }
1822
1823                 VectorLerp(PRVM_serveredictvector(check, mins), 0.5f, PRVM_serveredictvector(check, maxs), pivot);
1824                 //VectorClear(pivot);
1825
1826                 if (rotated)
1827                 {
1828                         vec3_t org2;
1829                         VectorSubtract (PRVM_serveredictvector(check, origin), PRVM_serveredictvector(pusher, origin), org);
1830                         VectorAdd (org, pivot, org);
1831                         org2[0] = DotProduct (org, forward);
1832                         org2[1] = DotProduct (org, left);
1833                         org2[2] = DotProduct (org, up);
1834                         VectorSubtract (org2, org, move);
1835                         VectorAdd (move, move1, move);
1836                 }
1837                 else
1838                         VectorCopy (move1, move);
1839
1840                 //Con_Printf("- pushing %f %f %f\n", move[0], move[1], move[2]);
1841
1842                 VectorCopy (PRVM_serveredictvector(check, origin), check->priv.server->moved_from);
1843                 VectorCopy (PRVM_serveredictvector(check, angles), check->priv.server->moved_fromangles);
1844                 moved_edicts[num_moved++] = PRVM_NUM_FOR_EDICT(check);
1845
1846                 // physics objects need better collisions than this code can do
1847                 if (movetype == MOVETYPE_PHYSICS)
1848                 {
1849                         VectorAdd(PRVM_serveredictvector(check, origin), move, PRVM_serveredictvector(check, origin));
1850                         SV_LinkEdict(check);
1851                         SV_LinkEdict_TouchAreaGrid(check);
1852                         continue;
1853                 }
1854
1855                 // try moving the contacted entity
1856                 PRVM_serveredictfloat(pusher, solid) = SOLID_NOT;
1857                 if(!SV_PushEntity (&trace, check, move, true))
1858                 {
1859                         // entity "check" got teleported
1860                         PRVM_serveredictvector(check, angles)[1] += trace.fraction * moveangle[1];
1861                         PRVM_serveredictfloat(pusher, solid) = savesolid; // was SOLID_BSP
1862                         continue; // pushed enough
1863                 }
1864                 // FIXME: turn players specially
1865                 PRVM_serveredictvector(check, angles)[1] += trace.fraction * moveangle[1];
1866                 PRVM_serveredictfloat(pusher, solid) = savesolid; // was SOLID_BSP
1867                 //Con_Printf("%s:%d frac %f startsolid %d bmodelstartsolid %d allsolid %d\n", __FILE__, __LINE__, trace.fraction, trace.startsolid, trace.bmodelstartsolid, trace.allsolid);
1868
1869                 // this trace.fraction < 1 check causes items to fall off of pushers
1870                 // if they pass under or through a wall
1871                 // the groundentity check causes items to fall off of ledges
1872                 if (PRVM_serveredictfloat(check, movetype) != MOVETYPE_WALK && (trace.fraction < 1 || PRVM_PROG_TO_EDICT(PRVM_serveredictedict(check, groundentity)) != pusher))
1873                         PRVM_serveredictfloat(check, flags) = (int)PRVM_serveredictfloat(check, flags) & ~FL_ONGROUND;
1874
1875                 // if it is still inside the pusher, block
1876                 VectorCopy(PRVM_serveredictvector(pusher, mins), pushermins);
1877                 VectorCopy(PRVM_serveredictvector(pusher, maxs), pushermaxs);
1878                 VectorCopy(PRVM_serveredictvector(check, origin), checkorigin);
1879                 VectorCopy(PRVM_serveredictvector(check, mins), checkmins);
1880                 VectorCopy(PRVM_serveredictvector(check, maxs), checkmaxs);
1881                 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);
1882                 if (trace.startsolid)
1883                 {
1884                         vec3_t move2;
1885                         if(SV_NudgeOutOfSolid_PivotIsKnownGood(check, pivot))
1886                         {
1887                                 // hack to invoke all necessary movement triggers
1888                                 VectorClear(move2);
1889                                 if(!SV_PushEntity(&trace2, check, move2, true))
1890                                 {
1891                                         // entity "check" got teleported
1892                                         continue;
1893                                 }
1894                                 // we could fix it
1895                                 continue;
1896                         }
1897
1898                         // still inside pusher, so it's really blocked
1899
1900                         // fail the move
1901                         if (PRVM_serveredictvector(check, mins)[0] == PRVM_serveredictvector(check, maxs)[0])
1902                                 continue;
1903                         if (PRVM_serveredictfloat(check, solid) == SOLID_NOT || PRVM_serveredictfloat(check, solid) == SOLID_TRIGGER)
1904                         {
1905                                 // corpse
1906                                 PRVM_serveredictvector(check, mins)[0] = PRVM_serveredictvector(check, mins)[1] = 0;
1907                                 VectorCopy (PRVM_serveredictvector(check, mins), PRVM_serveredictvector(check, maxs));
1908                                 continue;
1909                         }
1910
1911                         VectorCopy (pushorig, PRVM_serveredictvector(pusher, origin));
1912                         VectorCopy (pushang, PRVM_serveredictvector(pusher, angles));
1913                         PRVM_serveredictfloat(pusher, ltime) = pushltime;
1914                         SV_LinkEdict(pusher);
1915
1916                         // move back any entities we already moved
1917                         for (i = 0;i < num_moved;i++)
1918                         {
1919                                 prvm_edict_t *ed = PRVM_EDICT_NUM(moved_edicts[i]);
1920                                 VectorCopy (ed->priv.server->moved_from, PRVM_serveredictvector(ed, origin));
1921                                 VectorCopy (ed->priv.server->moved_fromangles, PRVM_serveredictvector(ed, angles));
1922                                 SV_LinkEdict(ed);
1923                         }
1924
1925                         // if the pusher has a "blocked" function, call it, otherwise just stay in place until the obstacle is gone
1926                         if (PRVM_serveredictfunction(pusher, blocked))
1927                         {
1928                                 PRVM_serverglobalfloat(time) = sv.time;
1929                                 PRVM_serverglobaledict(self) = PRVM_EDICT_TO_PROG(pusher);
1930                                 PRVM_serverglobaledict(other) = PRVM_EDICT_TO_PROG(check);
1931                                 prog->ExecuteProgram(prog, PRVM_serveredictfunction(pusher, blocked), "QC function self.blocked is missing");
1932                         }
1933                         break;
1934                 }
1935         }
1936         PRVM_serveredictvector(pusher, angles)[0] -= 360.0 * floor(PRVM_serveredictvector(pusher, angles)[0] * (1.0 / 360.0));
1937         PRVM_serveredictvector(pusher, angles)[1] -= 360.0 * floor(PRVM_serveredictvector(pusher, angles)[1] * (1.0 / 360.0));
1938         PRVM_serveredictvector(pusher, angles)[2] -= 360.0 * floor(PRVM_serveredictvector(pusher, angles)[2] * (1.0 / 360.0));
1939 }
1940
1941 /*
1942 ================
1943 SV_Physics_Pusher
1944
1945 ================
1946 */
1947 static void SV_Physics_Pusher (prvm_edict_t *ent)
1948 {
1949         prvm_prog_t *prog = SVVM_prog;
1950         prvm_vec_t thinktime, oldltime, movetime;
1951
1952         oldltime = PRVM_serveredictfloat(ent, ltime);
1953
1954         thinktime = PRVM_serveredictfloat(ent, nextthink);
1955         if (thinktime < PRVM_serveredictfloat(ent, ltime) + sv.frametime)
1956         {
1957                 movetime = thinktime - PRVM_serveredictfloat(ent, ltime);
1958                 if (movetime < 0)
1959                         movetime = 0;
1960         }
1961         else
1962                 movetime = sv.frametime;
1963
1964         if (movetime)
1965                 // advances PRVM_serveredictfloat(ent, ltime) if not blocked
1966                 SV_PushMove (ent, movetime);
1967
1968         if (thinktime > oldltime && thinktime <= PRVM_serveredictfloat(ent, ltime))
1969         {
1970                 PRVM_serveredictfloat(ent, nextthink) = 0;
1971                 PRVM_serverglobalfloat(time) = sv.time;
1972                 PRVM_serverglobaledict(self) = PRVM_EDICT_TO_PROG(ent);
1973                 PRVM_serverglobaledict(other) = PRVM_EDICT_TO_PROG(prog->edicts);
1974                 prog->ExecuteProgram(prog, PRVM_serveredictfunction(ent, think), "QC function self.think is missing");
1975         }
1976 }
1977
1978
1979 /*
1980 ===============================================================================
1981
1982 CLIENT MOVEMENT
1983
1984 ===============================================================================
1985 */
1986
1987 static float unstickoffsets[] =
1988 {
1989         // poutting -/+z changes first as they are least weird
1990          0,  0,  -1,
1991          0,  0,  1,
1992          // x or y changes
1993         -1,  0,  0,
1994          1,  0,  0,
1995          0, -1,  0,
1996          0,  1,  0,
1997          // x and y changes
1998         -1, -1,  0,
1999          1, -1,  0,
2000         -1,  1,  0,
2001          1,  1,  0,
2002 };
2003
2004 typedef enum unstickresult_e
2005 {
2006         UNSTICK_STUCK = 0,
2007         UNSTICK_GOOD = 1,
2008         UNSTICK_UNSTUCK = 2
2009 }
2010 unstickresult_t;
2011
2012 static unstickresult_t SV_UnstickEntityReturnOffset (prvm_edict_t *ent, vec3_t offset)
2013 {
2014         prvm_prog_t *prog = SVVM_prog;
2015         int i, maxunstick;
2016
2017         // if not stuck in a bmodel, just return
2018         if (!SV_TestEntityPosition(ent, vec3_origin))
2019                 return UNSTICK_GOOD;
2020
2021         for (i = 0;i < (int)(sizeof(unstickoffsets) / sizeof(unstickoffsets[0]));i += 3)
2022         {
2023                 if (!SV_TestEntityPosition(ent, unstickoffsets + i))
2024                 {
2025                         VectorCopy(unstickoffsets + i, offset);
2026                         SV_LinkEdict(ent);
2027                         //SV_LinkEdict_TouchAreaGrid(ent);
2028                         return UNSTICK_UNSTUCK;
2029                 }
2030         }
2031
2032         maxunstick = (int) ((PRVM_serveredictvector(ent, maxs)[2] - PRVM_serveredictvector(ent, mins)[2]) * 0.36);
2033         // magic number 0.36 allows unsticking by up to 17 units with the largest supported bbox
2034
2035         for(i = 2; i <= maxunstick; ++i)
2036         {
2037                 VectorClear(offset);
2038                 offset[2] = -i;
2039                 if (!SV_TestEntityPosition(ent, offset))
2040                 {
2041                         SV_LinkEdict(ent);
2042                         //SV_LinkEdict_TouchAreaGrid(ent);
2043                         return UNSTICK_UNSTUCK;
2044                 }
2045                 offset[2] = i;
2046                 if (!SV_TestEntityPosition(ent, offset))
2047                 {
2048                         SV_LinkEdict(ent);
2049                         //SV_LinkEdict_TouchAreaGrid(ent);
2050                         return UNSTICK_UNSTUCK;
2051                 }
2052         }
2053
2054         return UNSTICK_STUCK;
2055 }
2056
2057 qbool SV_UnstickEntity (prvm_edict_t *ent)
2058 {
2059         prvm_prog_t *prog = SVVM_prog;
2060         vec3_t offset;
2061         switch(SV_UnstickEntityReturnOffset(ent, offset))
2062         {
2063                 case UNSTICK_GOOD:
2064                         return true;
2065                 case UNSTICK_UNSTUCK:
2066                         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]);
2067                         return true;
2068                 case UNSTICK_STUCK:
2069                         if (developer_extra.integer)
2070                                 Con_DPrintf("Stuck entity %i (classname \"%s\").\n", (int)PRVM_EDICT_TO_PROG(ent), PRVM_GetString(prog, PRVM_serveredictstring(ent, classname)));
2071                         return false;
2072                 default:
2073                         Con_Printf("SV_UnstickEntityReturnOffset returned a value outside its enum.\n");
2074                         return false;
2075         }
2076 }
2077
2078 /*
2079 =============
2080 SV_CheckStuck
2081
2082 This is a big hack to try and fix the rare case of getting stuck in the world
2083 clipping hull.
2084 =============
2085 */
2086 static void SV_CheckStuck (prvm_edict_t *ent)
2087 {
2088         prvm_prog_t *prog = SVVM_prog;
2089         vec3_t offset;
2090
2091         switch(SV_UnstickEntityReturnOffset(ent, offset))
2092         {
2093                 case UNSTICK_GOOD:
2094                         VectorCopy (PRVM_serveredictvector(ent, origin), PRVM_serveredictvector(ent, oldorigin));
2095                         break;
2096                 case UNSTICK_UNSTUCK:
2097                         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]);
2098                         break;
2099                 case UNSTICK_STUCK:
2100                         VectorSubtract(PRVM_serveredictvector(ent, oldorigin), PRVM_serveredictvector(ent, origin), offset);
2101                         if (!SV_TestEntityPosition(ent, offset))
2102                         {
2103                                 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)));
2104                                 SV_LinkEdict(ent);
2105                                 //SV_LinkEdict_TouchAreaGrid(ent);
2106                         }
2107                         else
2108                                 Con_DPrintf("Stuck player entity %i (classname \"%s\").\n", (int)PRVM_EDICT_TO_PROG(ent), PRVM_GetString(prog, PRVM_serveredictstring(ent, classname)));
2109                         break;
2110                 default:
2111                         Con_Printf("SV_UnstickEntityReturnOffset returned a value outside its enum.\n");
2112         }
2113 }
2114
2115
2116 /*
2117 =============
2118 SV_CheckWater
2119 =============
2120 */
2121 static qbool SV_CheckWater (prvm_edict_t *ent)
2122 {
2123         prvm_prog_t *prog = SVVM_prog;
2124         int cont;
2125         int nNativeContents;
2126         vec3_t point;
2127
2128         point[0] = PRVM_serveredictvector(ent, origin)[0];
2129         point[1] = PRVM_serveredictvector(ent, origin)[1];
2130         point[2] = PRVM_serveredictvector(ent, origin)[2] + PRVM_serveredictvector(ent, mins)[2] + 1;
2131
2132         // DRESK - Support for Entity Contents Transition Event
2133         // NOTE: Some logic needed to be slightly re-ordered
2134         // to not affect performance and allow for the feature.
2135
2136         // Acquire Super Contents Prior to Resets
2137         cont = SV_PointSuperContents(point);
2138         // Acquire Native Contents Here
2139         nNativeContents = Mod_Q1BSP_NativeContentsFromSuperContents(cont);
2140
2141         // DRESK - Support for Entity Contents Transition Event
2142         if(PRVM_serveredictfloat(ent, watertype))
2143                 // Entity did NOT Spawn; Check
2144                 SV_CheckContentsTransition(ent, nNativeContents);
2145
2146
2147         PRVM_serveredictfloat(ent, waterlevel) = 0;
2148         PRVM_serveredictfloat(ent, watertype) = CONTENTS_EMPTY;
2149         cont = SV_PointSuperContents(point);
2150         if (cont & (SUPERCONTENTS_LIQUIDSMASK))
2151         {
2152                 PRVM_serveredictfloat(ent, watertype) = nNativeContents;
2153                 PRVM_serveredictfloat(ent, waterlevel) = 1;
2154                 point[2] = PRVM_serveredictvector(ent, origin)[2] + (PRVM_serveredictvector(ent, mins)[2] + PRVM_serveredictvector(ent, maxs)[2])*0.5;
2155                 if (SV_PointSuperContents(point) & (SUPERCONTENTS_LIQUIDSMASK))
2156                 {
2157                         PRVM_serveredictfloat(ent, waterlevel) = 2;
2158                         point[2] = PRVM_serveredictvector(ent, origin)[2] + PRVM_serveredictvector(ent, view_ofs)[2];
2159                         if (SV_PointSuperContents(point) & (SUPERCONTENTS_LIQUIDSMASK))
2160                                 PRVM_serveredictfloat(ent, waterlevel) = 3;
2161                 }
2162         }
2163
2164         return PRVM_serveredictfloat(ent, waterlevel) > 1;
2165 }
2166
2167 /*
2168 ============
2169 SV_WallFriction
2170
2171 ============
2172 */
2173 static void SV_WallFriction (prvm_edict_t *ent, float *stepnormal)
2174 {
2175         prvm_prog_t *prog = SVVM_prog;
2176         float d, i;
2177         vec3_t forward, into, side, v_angle;
2178
2179         VectorCopy(PRVM_serveredictvector(ent, v_angle), v_angle);
2180         AngleVectors (v_angle, forward, NULL, NULL);
2181         if ((d = DotProduct (stepnormal, forward) + 0.5) < 0)
2182         {
2183                 // cut the tangential velocity
2184                 i = DotProduct (stepnormal, PRVM_serveredictvector(ent, velocity));
2185                 VectorScale (stepnormal, i, into);
2186                 VectorSubtract (PRVM_serveredictvector(ent, velocity), into, side);
2187                 PRVM_serveredictvector(ent, velocity)[0] = side[0] * (1 + d);
2188                 PRVM_serveredictvector(ent, velocity)[1] = side[1] * (1 + d);
2189         }
2190 }
2191
2192 #if 0
2193 /*
2194 =====================
2195 SV_TryUnstick
2196
2197 Player has come to a dead stop, possibly due to the problem with limited
2198 float precision at some angle joins in the BSP hull.
2199
2200 Try fixing by pushing one pixel in each direction.
2201
2202 This is a hack, but in the interest of good gameplay...
2203 ======================
2204 */
2205 int SV_TryUnstick (prvm_edict_t *ent, vec3_t oldvel)
2206 {
2207         int i, clip;
2208         vec3_t oldorg, dir;
2209
2210         VectorCopy (PRVM_serveredictvector(ent, origin), oldorg);
2211         VectorClear (dir);
2212
2213         for (i=0 ; i<8 ; i++)
2214         {
2215                 // try pushing a little in an axial direction
2216                 switch (i)
2217                 {
2218                         case 0: dir[0] = 2; dir[1] = 0; break;
2219                         case 1: dir[0] = 0; dir[1] = 2; break;
2220                         case 2: dir[0] = -2; dir[1] = 0; break;
2221                         case 3: dir[0] = 0; dir[1] = -2; break;
2222                         case 4: dir[0] = 2; dir[1] = 2; break;
2223                         case 5: dir[0] = -2; dir[1] = 2; break;
2224                         case 6: dir[0] = 2; dir[1] = -2; break;
2225                         case 7: dir[0] = -2; dir[1] = -2; break;
2226                 }
2227
2228                 SV_PushEntity (&trace, ent, dir, false, true);
2229
2230                 // retry the original move
2231                 PRVM_serveredictvector(ent, velocity)[0] = oldvel[0];
2232                 PRVM_serveredictvector(ent, velocity)[1] = oldvel[1];
2233                 PRVM_serveredictvector(ent, velocity)[2] = 0;
2234                 clip = SV_FlyMove (ent, 0.1, NULL, SV_GenericHitSuperContentsMask(ent), 0);
2235
2236                 if (fabs(oldorg[1] - PRVM_serveredictvector(ent, origin)[1]) > 4
2237                  || fabs(oldorg[0] - PRVM_serveredictvector(ent, origin)[0]) > 4)
2238                 {
2239                         Con_DPrint("TryUnstick - success.\n");
2240                         return clip;
2241                 }
2242
2243                 // go back to the original pos and try again
2244                 VectorCopy (oldorg, PRVM_serveredictvector(ent, origin));
2245         }
2246
2247         // still not moving
2248         VectorClear (PRVM_serveredictvector(ent, velocity));
2249         Con_DPrint("TryUnstick - failure.\n");
2250         return 7;
2251 }
2252 #endif
2253
2254 /*
2255 =====================
2256 SV_WalkMove
2257
2258 Only used by players
2259 ======================
2260 */
2261 static void SV_WalkMove (prvm_edict_t *ent)
2262 {
2263         prvm_prog_t *prog = SVVM_prog;
2264         int clip;
2265         int oldonground;
2266         //int originalmove_clip;
2267         int originalmove_flags;
2268         int originalmove_groundentity;
2269         int hitsupercontentsmask = SV_GenericHitSuperContentsMask(ent);
2270         int skipsupercontentsmask = 0;
2271         int skipmaterialflagsmask = 0;
2272         int type;
2273         vec3_t upmove, downmove, start_origin, start_velocity, stepnormal, originalmove_origin, originalmove_velocity, entmins, entmaxs;
2274         trace_t downtrace, trace;
2275         qbool applygravity;
2276
2277         // if frametime is 0 (due to client sending the same timestamp twice),
2278         // don't move
2279         if (sv.frametime <= 0)
2280                 return;
2281
2282         if (sv_gameplayfix_unstickplayers.integer)
2283                 SV_CheckStuck (ent);
2284
2285         applygravity = !SV_CheckWater (ent) && PRVM_serveredictfloat(ent, movetype) == MOVETYPE_WALK && ! ((int)PRVM_serveredictfloat(ent, flags) & FL_WATERJUMP);
2286
2287         SV_CheckVelocity(ent);
2288
2289         // do a regular slide move unless it looks like you ran into a step
2290         oldonground = (int)PRVM_serveredictfloat(ent, flags) & FL_ONGROUND;
2291
2292         VectorCopy (PRVM_serveredictvector(ent, origin), start_origin);
2293         VectorCopy (PRVM_serveredictvector(ent, velocity), start_velocity);
2294
2295         clip = SV_FlyMove (ent, sv.frametime, applygravity, NULL, hitsupercontentsmask, skipsupercontentsmask, skipmaterialflagsmask, sv_gameplayfix_stepmultipletimes.integer ? sv_stepheight.value : 0);
2296
2297         if(sv_gameplayfix_downtracesupportsongroundflag.integer)
2298         if(!(clip & 1))
2299         {
2300                 // only try this if there was no floor in the way in the trace (no,
2301                 // this check seems to be not REALLY necessary, because if clip & 1,
2302                 // our trace will hit that thing too)
2303                 VectorSet(upmove, PRVM_serveredictvector(ent, origin)[0], PRVM_serveredictvector(ent, origin)[1], PRVM_serveredictvector(ent, origin)[2] + 1);
2304                 VectorSet(downmove, PRVM_serveredictvector(ent, origin)[0], PRVM_serveredictvector(ent, origin)[1], PRVM_serveredictvector(ent, origin)[2] - 1);
2305                 if (PRVM_serveredictfloat(ent, movetype) == MOVETYPE_FLYMISSILE)
2306                         type = MOVE_MISSILE;
2307                 else if (PRVM_serveredictfloat(ent, movetype) == MOVETYPE_FLY_WORLDONLY)
2308                         type = MOVE_WORLDONLY;
2309                 else if (PRVM_serveredictfloat(ent, solid) == SOLID_TRIGGER || PRVM_serveredictfloat(ent, solid) == SOLID_NOT)
2310                         type = MOVE_NOMONSTERS; // only clip against bmodels
2311                 else
2312                         type = MOVE_NORMAL;
2313                 VectorCopy(PRVM_serveredictvector(ent, mins), entmins);
2314                 VectorCopy(PRVM_serveredictvector(ent, maxs), entmaxs);
2315                 trace = SV_TraceBox(upmove, entmins, entmaxs, downmove, type, ent, SV_GenericHitSuperContentsMask(ent), skipsupercontentsmask, skipmaterialflagsmask, collision_extendmovelength.value);
2316                 if(trace.fraction < 1 && trace.plane.normal[2] > 0.7)
2317                 {
2318                         clip |= 1; // but we HAVE found a floor
2319                         // set groundentity so we get carried when walking onto a mover with sv_gameplayfix_nogravityonground
2320                         PRVM_serveredictedict(ent, groundentity) = PRVM_EDICT_TO_PROG(trace.ent);
2321                 }
2322         }
2323
2324         // if the move did not hit the ground at any point, we're not on ground
2325         if(!(clip & 1))
2326                 PRVM_serveredictfloat(ent, flags) = (int)PRVM_serveredictfloat(ent, flags) & ~FL_ONGROUND;
2327
2328         SV_CheckVelocity(ent);
2329         SV_LinkEdict(ent);
2330         SV_LinkEdict_TouchAreaGrid(ent);
2331
2332         if(clip & 8) // teleport
2333                 return;
2334
2335         if ((int)PRVM_serveredictfloat(ent, flags) & FL_WATERJUMP)
2336                 return;
2337
2338         if (sv_nostep.integer)
2339                 return;
2340
2341         VectorCopy(PRVM_serveredictvector(ent, origin), originalmove_origin);
2342         VectorCopy(PRVM_serveredictvector(ent, velocity), originalmove_velocity);
2343         //originalmove_clip = clip;
2344         originalmove_flags = (int)PRVM_serveredictfloat(ent, flags);
2345         originalmove_groundentity = PRVM_serveredictedict(ent, groundentity);
2346
2347         // if move didn't block on a step, return
2348         if (clip & 2)
2349         {
2350                 // if move was not trying to move into the step, return
2351                 if (fabs(start_velocity[0]) < 0.03125 && fabs(start_velocity[1]) < 0.03125)
2352                         return;
2353
2354                 if (PRVM_serveredictfloat(ent, movetype) != MOVETYPE_FLY)
2355                 {
2356                         // return if gibbed by a trigger
2357                         if (PRVM_serveredictfloat(ent, movetype) != MOVETYPE_WALK)
2358                                 return;
2359
2360                         // return if attempting to jump while airborn (unless sv_jumpstep)
2361                         if (!sv_jumpstep.integer)
2362                                 if (!oldonground && PRVM_serveredictfloat(ent, waterlevel) == 0)
2363                                         return;
2364                 }
2365
2366                 // try moving up and forward to go up a step
2367                 // back to start pos
2368                 VectorCopy (start_origin, PRVM_serveredictvector(ent, origin));
2369                 VectorCopy (start_velocity, PRVM_serveredictvector(ent, velocity));
2370
2371                 // move up
2372                 VectorClear (upmove);
2373                 upmove[2] = sv_stepheight.value;
2374                 if(!SV_PushEntity(&trace, ent, upmove, true))
2375                 {
2376                         // we got teleported when upstepping... must abort the move
2377                         return;
2378                 }
2379
2380                 // move forward
2381                 PRVM_serveredictvector(ent, velocity)[2] = 0;
2382                 clip = SV_FlyMove (ent, sv.frametime, applygravity, stepnormal, hitsupercontentsmask, skipsupercontentsmask, skipmaterialflagsmask, 0);
2383                 PRVM_serveredictvector(ent, velocity)[2] += start_velocity[2];
2384                 if(clip & 8)
2385                 {
2386                         // we got teleported when upstepping... must abort the move
2387                         // note that z velocity handling may not be what QC expects here, but we cannot help it
2388                         return;
2389                 }
2390
2391                 SV_CheckVelocity(ent);
2392                 SV_LinkEdict(ent);
2393                 SV_LinkEdict_TouchAreaGrid(ent);
2394
2395                 // check for stuckness, possibly due to the limited precision of floats
2396                 // in the clipping hulls
2397                 if (clip
2398                  && fabs(originalmove_origin[1] - PRVM_serveredictvector(ent, origin)[1]) < 0.03125
2399                  && fabs(originalmove_origin[0] - PRVM_serveredictvector(ent, origin)[0]) < 0.03125)
2400                 {
2401                         //Con_Printf("wall\n");
2402                         // stepping up didn't make any progress, revert to original move
2403                         VectorCopy(originalmove_origin, PRVM_serveredictvector(ent, origin));
2404                         VectorCopy(originalmove_velocity, PRVM_serveredictvector(ent, velocity));
2405                         //clip = originalmove_clip;
2406                         PRVM_serveredictfloat(ent, flags) = originalmove_flags;
2407                         PRVM_serveredictedict(ent, groundentity) = originalmove_groundentity;
2408                         // now try to unstick if needed
2409                         //clip = SV_TryUnstick (ent, oldvel);
2410                         return;
2411                 }
2412
2413                 //Con_Printf("step - ");
2414
2415                 // extra friction based on view angle
2416                 if (clip & 2 && sv_wallfriction.integer)
2417                         SV_WallFriction (ent, stepnormal);
2418         }
2419         // don't do the down move if stepdown is disabled, moving upward, not in water, or the move started offground or ended onground
2420         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))
2421                 return;
2422
2423         // move down
2424         VectorClear (downmove);
2425         downmove[2] = -sv_stepheight.value + start_velocity[2]*sv.frametime;
2426         if(!SV_PushEntity (&downtrace, ent, downmove, true))
2427         {
2428                 // we got teleported when downstepping... must abort the move
2429                 return;
2430         }
2431
2432         if (downtrace.fraction < 1 && downtrace.plane.normal[2] > 0.7)
2433         {
2434                 // this has been disabled so that you can't jump when you are stepping
2435                 // up while already jumping (also known as the Quake2 double jump bug)
2436 #if 0
2437                 // LadyHavoc: disabled this check so you can walk on monsters/players
2438                 //if (PRVM_serveredictfloat(ent, solid) == SOLID_BSP)
2439                 {
2440                         //Con_Printf("onground\n");
2441                         PRVM_serveredictfloat(ent, flags) =     (int)PRVM_serveredictfloat(ent, flags) | FL_ONGROUND;
2442                         PRVM_serveredictedict(ent, groundentity) = PRVM_EDICT_TO_PROG(downtrace.ent);
2443                 }
2444 #endif
2445         }
2446         else
2447         {
2448                 //Con_Printf("slope\n");
2449                 // if the push down didn't end up on good ground, use the move without
2450                 // the step up.  This happens near wall / slope combinations, and can
2451                 // cause the player to hop up higher on a slope too steep to climb
2452                 VectorCopy(originalmove_origin, PRVM_serveredictvector(ent, origin));
2453                 VectorCopy(originalmove_velocity, PRVM_serveredictvector(ent, velocity));
2454                 //clip = originalmove_clip;
2455                 PRVM_serveredictfloat(ent, flags) = originalmove_flags;
2456                 PRVM_serveredictedict(ent, groundentity) = originalmove_groundentity;
2457         }
2458
2459         SV_CheckVelocity(ent);
2460         SV_LinkEdict(ent);
2461         SV_LinkEdict_TouchAreaGrid(ent);
2462 }
2463
2464 //============================================================================
2465
2466 /*
2467 =============
2468 SV_Physics_Follow
2469
2470 Entities that are "stuck" to another entity
2471 =============
2472 */
2473 static void SV_Physics_Follow (prvm_edict_t *ent)
2474 {
2475         prvm_prog_t *prog = SVVM_prog;
2476         vec3_t vf, vr, vu, angles, v;
2477         prvm_edict_t *e;
2478
2479         // LadyHavoc: implemented rotation on MOVETYPE_FOLLOW objects
2480         e = PRVM_PROG_TO_EDICT(PRVM_serveredictedict(ent, aiment));
2481         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])
2482         {
2483                 // quick case for no rotation
2484                 VectorAdd(PRVM_serveredictvector(e, origin), PRVM_serveredictvector(ent, view_ofs), PRVM_serveredictvector(ent, origin));
2485         }
2486         else
2487         {
2488                 angles[0] = -PRVM_serveredictvector(ent, punchangle)[0];
2489                 angles[1] =  PRVM_serveredictvector(ent, punchangle)[1];
2490                 angles[2] =  PRVM_serveredictvector(ent, punchangle)[2];
2491                 AngleVectors (angles, vf, vr, vu);
2492                 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];
2493                 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];
2494                 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];
2495                 angles[0] = -PRVM_serveredictvector(e, angles)[0];
2496                 angles[1] =  PRVM_serveredictvector(e, angles)[1];
2497                 angles[2] =  PRVM_serveredictvector(e, angles)[2];
2498                 AngleVectors (angles, vf, vr, vu);
2499                 PRVM_serveredictvector(ent, origin)[0] = v[0] * vf[0] + v[1] * vf[1] + v[2] * vf[2] + PRVM_serveredictvector(e, origin)[0];
2500                 PRVM_serveredictvector(ent, origin)[1] = v[0] * vr[0] + v[1] * vr[1] + v[2] * vr[2] + PRVM_serveredictvector(e, origin)[1];
2501                 PRVM_serveredictvector(ent, origin)[2] = v[0] * vu[0] + v[1] * vu[1] + v[2] * vu[2] + PRVM_serveredictvector(e, origin)[2];
2502         }
2503         VectorAdd (PRVM_serveredictvector(e, angles), PRVM_serveredictvector(ent, v_angle), PRVM_serveredictvector(ent, angles));
2504         SV_LinkEdict(ent);
2505         //SV_LinkEdict_TouchAreaGrid(ent);
2506 }
2507
2508 /*
2509 ==============================================================================
2510
2511 TOSS / BOUNCE
2512
2513 ==============================================================================
2514 */
2515
2516 /*
2517 =============
2518 SV_CheckWaterTransition
2519
2520 =============
2521 */
2522 static void SV_CheckWaterTransition (prvm_edict_t *ent)
2523 {
2524         vec3_t entorigin;
2525         prvm_prog_t *prog = SVVM_prog;
2526         // 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
2527         int cont;
2528         VectorCopy(PRVM_serveredictvector(ent, origin), entorigin);
2529         cont = Mod_Q1BSP_NativeContentsFromSuperContents(SV_PointSuperContents(entorigin));
2530         if (!PRVM_serveredictfloat(ent, watertype))
2531         {
2532                 // just spawned here
2533                 if (!sv_gameplayfix_fixedcheckwatertransition.integer)
2534                 {
2535                         PRVM_serveredictfloat(ent, watertype) = cont;
2536                         PRVM_serveredictfloat(ent, waterlevel) = 1;
2537                         return;
2538                 }
2539         }
2540         // DRESK - Support for Entity Contents Transition Event
2541         // NOTE: Call here BEFORE updating the watertype below,
2542         // and suppress watersplash sound if a valid function
2543         // call was made to allow for custom "splash" sounds.
2544         else if( !SV_CheckContentsTransition(ent, cont) )
2545         { // Contents Transition Function Invalid; Potentially Play Water Sound
2546                 // check if the entity crossed into or out of water
2547                 if (sv_sound_watersplash.string && ((PRVM_serveredictfloat(ent, watertype) == CONTENTS_WATER || PRVM_serveredictfloat(ent, watertype) == CONTENTS_SLIME) != (cont == CONTENTS_WATER || cont == CONTENTS_SLIME)))
2548                         SV_StartSound (ent, 0, sv_sound_watersplash.string, 255, 1, false, 1.0f);
2549         }
2550
2551         if (cont <= CONTENTS_WATER)
2552         {
2553                 PRVM_serveredictfloat(ent, watertype) = cont;
2554                 PRVM_serveredictfloat(ent, waterlevel) = 1;
2555         }
2556         else
2557         {
2558                 PRVM_serveredictfloat(ent, watertype) = CONTENTS_EMPTY;
2559                 PRVM_serveredictfloat(ent, waterlevel) = sv_gameplayfix_fixedcheckwatertransition.integer ? 0 : cont;
2560         }
2561 }
2562
2563 /*
2564 =============
2565 SV_Physics_Toss
2566
2567 Toss, bounce, and fly movement.  When onground, do nothing.
2568 =============
2569 */
2570
2571 void SV_Physics_Toss (prvm_edict_t *ent)
2572 {
2573         prvm_prog_t *prog = SVVM_prog;
2574         trace_t trace;
2575         vec3_t move;
2576         vec_t movetime;
2577         int bump;
2578         prvm_edict_t *groundentity;
2579         float d, ent_gravity;
2580         float bouncefactor;
2581         float bouncestop;
2582
2583 // if onground, return without moving
2584         if ((int)PRVM_serveredictfloat(ent, flags) & FL_ONGROUND)
2585         {
2586                 groundentity = PRVM_PROG_TO_EDICT(PRVM_serveredictedict(ent, groundentity));
2587                 if (PRVM_serveredictvector(ent, velocity)[2] >= (1.0 / 32.0) && sv_gameplayfix_upwardvelocityclearsongroundflag.integer)
2588                 {
2589                         // don't stick to ground if onground and moving upward
2590                         PRVM_serveredictfloat(ent, flags) -= FL_ONGROUND;
2591                 }
2592                 else if (!PRVM_serveredictedict(ent, groundentity) || !sv_gameplayfix_noairborncorpse.integer)
2593                 {
2594                         // we can trust FL_ONGROUND if groundentity is world because it never moves
2595                         return;
2596                 }
2597                 else if (ent->priv.server->suspendedinairflag && groundentity->free)
2598                 {
2599                         // if ent was supported by a brush model on previous frame,
2600                         // and groundentity is now freed, set groundentity to 0 (world)
2601                         // which leaves it suspended in the air
2602                         PRVM_serveredictedict(ent, groundentity) = 0;
2603                         if (sv_gameplayfix_noairborncorpse_allowsuspendeditems.integer)
2604                                 return;
2605                 }
2606                 else if (BoxesOverlap(ent->priv.server->cullmins, ent->priv.server->cullmaxs, groundentity->priv.server->cullmins, groundentity->priv.server->cullmaxs))
2607                 {
2608                         // don't slide if still touching the groundentity
2609                         return;
2610                 }
2611         }
2612         ent->priv.server->suspendedinairflag = false;
2613
2614         SV_CheckVelocity (ent);
2615
2616 // add gravity
2617         if (PRVM_serveredictfloat(ent, movetype) == MOVETYPE_TOSS || PRVM_serveredictfloat(ent, movetype) == MOVETYPE_BOUNCE)
2618                 PRVM_serveredictvector(ent, velocity)[2] -= SV_Gravity(ent);
2619
2620 // move angles
2621         VectorMA (PRVM_serveredictvector(ent, angles), sv.frametime, PRVM_serveredictvector(ent, avelocity), PRVM_serveredictvector(ent, angles));
2622
2623         movetime = sv.frametime;
2624         for (bump = 0;bump < MAX_CLIP_PLANES && movetime > 0;bump++)
2625         {
2626         // move origin
2627                 VectorScale(PRVM_serveredictvector(ent, velocity), movetime, move);
2628                 if(!SV_PushEntity(&trace, ent, move, true))
2629                         return; // teleported
2630                 if (ent->free)
2631                         return;
2632                 if (trace.bmodelstartsolid && sv_gameplayfix_unstickentities.integer)
2633                 {
2634                         // try to unstick the entity
2635                         SV_UnstickEntity(ent);
2636                         if(!SV_PushEntity(&trace, ent, move, true))
2637                                 return; // teleported
2638                         if (ent->free)
2639                                 return;
2640                 }
2641                 if (trace.fraction == 1)
2642                         break;
2643                 movetime *= 1 - min(1, trace.fraction);
2644                 switch((int)PRVM_serveredictfloat(ent, movetype))
2645                 {
2646                 case MOVETYPE_BOUNCEMISSILE:
2647                         bouncefactor = PRVM_serveredictfloat(ent, bouncefactor);
2648                         if (!bouncefactor)
2649                                 bouncefactor = 1.0f;
2650
2651                         ClipVelocity(PRVM_serveredictvector(ent, velocity), trace.plane.normal, PRVM_serveredictvector(ent, velocity), 1 + bouncefactor);
2652                         PRVM_serveredictfloat(ent, flags) = (int)PRVM_serveredictfloat(ent, flags) & ~FL_ONGROUND;
2653                         if (!sv_gameplayfix_slidemoveprojectiles.integer)
2654                                 movetime = 0;
2655                         break;
2656                 case MOVETYPE_BOUNCE:
2657                         bouncefactor = PRVM_serveredictfloat(ent, bouncefactor);
2658                         if (!bouncefactor)
2659                                 bouncefactor = 0.5f;
2660
2661                         bouncestop = PRVM_serveredictfloat(ent, bouncestop);
2662                         if (!bouncestop)
2663                                 bouncestop = 60.0f / 800.0f;
2664
2665                         ClipVelocity(PRVM_serveredictvector(ent, velocity), trace.plane.normal, PRVM_serveredictvector(ent, velocity), 1 + bouncefactor);
2666                         ent_gravity = PRVM_serveredictfloat(ent, gravity);
2667                         if (!ent_gravity)
2668                                 ent_gravity = 1.0f;
2669                         // LadyHavoc: fixed grenades not bouncing when fired down a slope
2670                         if (sv_gameplayfix_grenadebouncedownslopes.integer)
2671                                 d = fabs(DotProduct(trace.plane.normal, PRVM_serveredictvector(ent, velocity)));
2672                         else
2673                                 d = PRVM_serveredictvector(ent, velocity)[2];
2674                         if (trace.plane.normal[2] > 0.7 && d < sv_gravity.value * bouncestop * ent_gravity)
2675                         {
2676                                 PRVM_serveredictfloat(ent, flags) = (int)PRVM_serveredictfloat(ent, flags) | FL_ONGROUND;
2677                                 PRVM_serveredictedict(ent, groundentity) = PRVM_EDICT_TO_PROG(trace.ent);
2678                                 VectorClear(PRVM_serveredictvector(ent, velocity));
2679                                 VectorClear(PRVM_serveredictvector(ent, avelocity));
2680                                 movetime = 0;
2681                         }
2682                         else
2683                         {
2684                                 PRVM_serveredictfloat(ent, flags) = (int)PRVM_serveredictfloat(ent, flags) & ~FL_ONGROUND;
2685                                 if (!sv_gameplayfix_slidemoveprojectiles.integer)
2686                                         movetime = 0;
2687                         }
2688                         break;
2689                 default:
2690                         ClipVelocity (PRVM_serveredictvector(ent, velocity), trace.plane.normal, PRVM_serveredictvector(ent, velocity), 1.0);
2691                         if (trace.plane.normal[2] > 0.7)
2692                         {
2693                                 PRVM_serveredictfloat(ent, flags) = (int)PRVM_serveredictfloat(ent, flags) | FL_ONGROUND;
2694                                 PRVM_serveredictedict(ent, groundentity) = PRVM_EDICT_TO_PROG(trace.ent);
2695                                 if (PRVM_serveredictfloat(((prvm_edict_t *)trace.ent), solid) == SOLID_BSP)
2696                                         ent->priv.server->suspendedinairflag = true;
2697                                 VectorClear (PRVM_serveredictvector(ent, velocity));
2698                                 VectorClear (PRVM_serveredictvector(ent, avelocity));
2699                                 movetime = 0;
2700                         }
2701                         else
2702                         {
2703                                 PRVM_serveredictfloat(ent, flags) = (int)PRVM_serveredictfloat(ent, flags) & ~FL_ONGROUND;
2704                                 if (!sv_gameplayfix_slidemoveprojectiles.integer)
2705                                         movetime = 0;
2706                         }
2707                         break;
2708                 }
2709         }
2710
2711 // check for in water
2712         SV_CheckWaterTransition (ent);
2713 }
2714
2715 /*
2716 ===============================================================================
2717
2718 STEPPING MOVEMENT
2719
2720 ===============================================================================
2721 */
2722
2723 /*
2724 =============
2725 SV_Physics_Step
2726
2727 Monsters freefall when they don't have a ground entity, otherwise
2728 all movement is done with discrete steps.
2729
2730 This is also used for objects that have become still on the ground, but
2731 will fall if the floor is pulled out from under them.
2732 =============
2733 */
2734 static void SV_Physics_Step (prvm_edict_t *ent)
2735 {
2736         prvm_prog_t *prog = SVVM_prog;
2737         int flags = (int)PRVM_serveredictfloat(ent, flags);
2738
2739         // DRESK
2740         // Backup Velocity in the event that movetypesteplandevent is called,
2741         // to provide a parameter with the entity's velocity at impact.
2742         vec3_t backupVelocity;
2743         VectorCopy(PRVM_serveredictvector(ent, velocity), backupVelocity);
2744         // don't fall at all if fly/swim
2745         if (!(flags & (FL_FLY | FL_SWIM)))
2746         {
2747                 if (flags & FL_ONGROUND)
2748                 {
2749                         // freefall if onground and moving upward
2750                         // freefall if not standing on a world surface (it may be a lift or trap door)
2751                         if (PRVM_serveredictvector(ent, velocity)[2] >= (1.0 / 32.0) && sv_gameplayfix_upwardvelocityclearsongroundflag.integer)
2752                         {
2753                                 PRVM_serveredictfloat(ent, flags) -= FL_ONGROUND;
2754                                 SV_CheckVelocity(ent);
2755                                 SV_FlyMove(ent, sv.frametime, true, NULL, SV_GenericHitSuperContentsMask(ent), 0, 0, 0);
2756                                 SV_LinkEdict(ent);
2757                                 SV_LinkEdict_TouchAreaGrid(ent);
2758                                 ent->priv.server->waterposition_forceupdate = true;
2759                         }
2760                 }
2761                 else
2762                 {
2763                         // freefall if not onground
2764                         int hitsound = PRVM_serveredictvector(ent, velocity)[2] < sv_gravity.value * -0.1;
2765
2766                         SV_CheckVelocity(ent);
2767                         SV_FlyMove(ent, sv.frametime, true, NULL, SV_GenericHitSuperContentsMask(ent), 0, 0, 0);
2768                         SV_LinkEdict(ent);
2769                         SV_LinkEdict_TouchAreaGrid(ent);
2770
2771                         // just hit ground
2772                         if (hitsound && (int)PRVM_serveredictfloat(ent, flags) & FL_ONGROUND)
2773                         {
2774                                 // DRESK - Check for Entity Land Event Function
2775                                 if(PRVM_serveredictfunction(ent, movetypesteplandevent))
2776                                 { // Valid Function; Execute
2777                                         // Prepare Parameters
2778                                         // Assign Velocity at Impact
2779                                         PRVM_G_VECTOR(OFS_PARM0)[0] = backupVelocity[0];
2780                                         PRVM_G_VECTOR(OFS_PARM0)[1] = backupVelocity[1];
2781                                         PRVM_G_VECTOR(OFS_PARM0)[2] = backupVelocity[2];
2782                                         // Assign Self
2783                                         PRVM_serverglobaledict(self) = PRVM_EDICT_TO_PROG(ent);
2784                                         // Set Time
2785                                         PRVM_serverglobalfloat(time) = sv.time;
2786                                         // Execute VM Function
2787                                         prog->ExecuteProgram(prog, PRVM_serveredictfunction(ent, movetypesteplandevent), "movetypesteplandevent: NULL function");
2788                                 }
2789                                 else
2790                                 // Check for Engine Landing Sound
2791                                 if(sv_sound_land.string)
2792                                         SV_StartSound(ent, 0, sv_sound_land.string, 255, 1, false, 1.0f);
2793                         }
2794                         ent->priv.server->waterposition_forceupdate = true;
2795                 }
2796         }
2797 }
2798
2799 //============================================================================
2800
2801 static void SV_Physics_Entity (prvm_edict_t *ent)
2802 {
2803         prvm_prog_t *prog = SVVM_prog;
2804         // don't run think/move on newly spawned projectiles as it messes up
2805         // movement interpolation and rocket trails, and is inconsistent with
2806         // respect to entities spawned in the same frame
2807         // (if an ent spawns a higher numbered ent, it moves in the same frame,
2808         //  but if it spawns a lower numbered ent, it doesn't - this never moves
2809         //  ents in the first frame regardless)
2810         qbool runmove = ent->priv.server->move;
2811         ent->priv.server->move = true;
2812         if (!runmove && sv_gameplayfix_delayprojectiles.integer > 0)
2813                 return;
2814         switch ((int) PRVM_serveredictfloat(ent, movetype))
2815         {
2816         case MOVETYPE_PUSH:
2817         case MOVETYPE_FAKEPUSH:
2818                 SV_Physics_Pusher (ent);
2819                 break;
2820         case MOVETYPE_NONE:
2821                 // LadyHavoc: manually inlined the thinktime check here because MOVETYPE_NONE is used on so many objects
2822                 if (PRVM_serveredictfloat(ent, nextthink) > 0 && PRVM_serveredictfloat(ent, nextthink) <= sv.time + sv.frametime)
2823                         SV_RunThink (ent);
2824                 break;
2825         case MOVETYPE_FOLLOW:
2826                 if(SV_RunThink(ent))
2827                         SV_Physics_Follow (ent);
2828                 break;
2829         case MOVETYPE_NOCLIP:
2830                 if (SV_RunThink(ent))
2831                 {
2832                         SV_CheckWater(ent);
2833                         VectorMA(PRVM_serveredictvector(ent, origin), sv.frametime, PRVM_serveredictvector(ent, velocity), PRVM_serveredictvector(ent, origin));
2834                         VectorMA(PRVM_serveredictvector(ent, angles), sv.frametime, PRVM_serveredictvector(ent, avelocity), PRVM_serveredictvector(ent, angles));
2835                 }
2836                 SV_LinkEdict(ent);
2837                 break;
2838         case MOVETYPE_STEP:
2839                 SV_Physics_Step (ent);
2840                 // regular thinking
2841                 if (SV_RunThink(ent))
2842                 if (ent->priv.server->waterposition_forceupdate || !VectorCompare(PRVM_serveredictvector(ent, origin), ent->priv.server->waterposition_origin))
2843                 {
2844                         ent->priv.server->waterposition_forceupdate = false;
2845                         VectorCopy(PRVM_serveredictvector(ent, origin), ent->priv.server->waterposition_origin);
2846                         SV_CheckWaterTransition(ent);
2847                 }
2848                 break;
2849         case MOVETYPE_WALK:
2850                 if (SV_RunThink (ent))
2851                         SV_WalkMove (ent);
2852                 break;
2853         case MOVETYPE_TOSS:
2854         case MOVETYPE_BOUNCE:
2855         case MOVETYPE_BOUNCEMISSILE:
2856         case MOVETYPE_FLYMISSILE:
2857         case MOVETYPE_FLY:
2858         case MOVETYPE_FLY_WORLDONLY:
2859                 // regular thinking
2860                 if (SV_RunThink (ent))
2861                         SV_Physics_Toss (ent);
2862                 break;
2863         case MOVETYPE_PHYSICS:
2864                 if (SV_RunThink(ent))
2865                 {
2866                         SV_LinkEdict(ent);
2867                         SV_LinkEdict_TouchAreaGrid(ent);
2868                 }
2869                 break;
2870         default:
2871                 if((int) PRVM_serveredictfloat(ent, movetype) >= MOVETYPE_USER_FIRST && (int) PRVM_serveredictfloat(ent, movetype) <= MOVETYPE_USER_LAST)
2872                         break;
2873                 Con_Printf ("SV_Physics: bad movetype %i\n", (int)PRVM_serveredictfloat(ent, movetype));
2874                 break;
2875         }
2876 }
2877
2878 static void SV_Physics_ClientEntity_NoThink (prvm_edict_t *ent)
2879 {
2880         prvm_prog_t *prog = SVVM_prog;
2881
2882         // don't run think at all, that is done during server frames
2883         // instead, call the movetypes directly so they match client input
2884
2885         // This probably only makes sense for CSQC-networked (SendEntity field set) player entities
2886         switch ((int) PRVM_serveredictfloat(ent, movetype))
2887         {
2888         case MOVETYPE_PUSH:
2889         case MOVETYPE_FAKEPUSH:
2890                 // push physics relies heavily on think times and calls, and so cannot be predicted currently
2891                 Con_Printf ("SV_Physics_ClientEntity_NoThink: bad movetype %i\n", (int)PRVM_serveredictfloat(ent, movetype));
2892                 break;
2893         case MOVETYPE_NONE:
2894                 break;
2895         case MOVETYPE_FOLLOW:
2896                 SV_Physics_Follow (ent);
2897                 break;
2898         case MOVETYPE_NOCLIP:
2899                 VectorMA(PRVM_serveredictvector(ent, origin), sv.frametime, PRVM_serveredictvector(ent, velocity), PRVM_serveredictvector(ent, origin));
2900                 VectorMA(PRVM_serveredictvector(ent, angles), sv.frametime, PRVM_serveredictvector(ent, avelocity), PRVM_serveredictvector(ent, angles));
2901                 break;
2902         case MOVETYPE_STEP:
2903                 SV_Physics_Step (ent);
2904                 break;
2905         case MOVETYPE_WALK:
2906                 SV_WalkMove (ent);
2907                 break;
2908         case MOVETYPE_TOSS:
2909         case MOVETYPE_BOUNCE:
2910         case MOVETYPE_BOUNCEMISSILE:
2911         case MOVETYPE_FLYMISSILE:
2912                 SV_Physics_Toss (ent);
2913                 break;
2914         case MOVETYPE_FLY:
2915         case MOVETYPE_FLY_WORLDONLY:
2916                 SV_WalkMove (ent);
2917                 break;
2918         case MOVETYPE_PHYSICS:
2919                 break;
2920         default:
2921                 if((int) PRVM_serveredictfloat(ent, movetype) >= MOVETYPE_USER_FIRST && (int) PRVM_serveredictfloat(ent, movetype) <= MOVETYPE_USER_LAST)
2922                         break;
2923                 Con_Printf ("SV_Physics_ClientEntity_NoThink: bad movetype %i\n", (int)PRVM_serveredictfloat(ent, movetype));
2924                 break;
2925         }
2926 }
2927
2928 void SV_Physics_ClientMove(void)
2929 {
2930         prvm_prog_t *prog = SVVM_prog;
2931         prvm_edict_t *ent;
2932         ent = host_client->edict;
2933
2934         // call player physics, this needs the proper frametime
2935         PRVM_serverglobalfloat(frametime) = sv.frametime;
2936         SV_PlayerPhysics();
2937
2938         // call standard client pre-think, with frametime = 0
2939         PRVM_serverglobalfloat(time) = sv.time;
2940         PRVM_serverglobalfloat(frametime) = 0;
2941         PRVM_serverglobaledict(self) = PRVM_EDICT_TO_PROG(ent);
2942         prog->ExecuteProgram(prog, PRVM_serverfunction(PlayerPreThink), "QC function PlayerPreThink is missing");
2943         PRVM_serverglobalfloat(frametime) = sv.frametime;
2944
2945         // make sure the velocity is sane (not a NaN)
2946         SV_CheckVelocity(ent);
2947
2948         // perform movetype behaviour
2949         // note: will always be MOVETYPE_WALK if disableclientprediction = 0
2950         SV_Physics_ClientEntity_NoThink (ent);
2951
2952         // call standard player post-think, with frametime = 0
2953         PRVM_serverglobalfloat(time) = sv.time;
2954         PRVM_serverglobalfloat(frametime) = 0;
2955         PRVM_serverglobaledict(self) = PRVM_EDICT_TO_PROG(ent);
2956         prog->ExecuteProgram(prog, PRVM_serverfunction(PlayerPostThink), "QC function PlayerPostThink is missing");
2957         PRVM_serverglobalfloat(frametime) = sv.frametime;
2958
2959         if(PRVM_serveredictfloat(ent, fixangle))
2960         {
2961                 // angle fixing was requested by physics code...
2962                 // so store the current angles for later use
2963                 VectorCopy(PRVM_serveredictvector(ent, angles), host_client->fixangle_angles);
2964                 host_client->fixangle_angles_set = true;
2965
2966                 // and clear fixangle for the next frame
2967                 PRVM_serveredictfloat(ent, fixangle) = 0;
2968         }
2969 }
2970
2971 static void SV_Physics_ClientEntity_PreThink(prvm_edict_t *ent)
2972 {
2973         prvm_prog_t *prog = SVVM_prog;
2974         // don't do physics on disconnected clients, FrikBot relies on this
2975         if (!host_client->begun)
2976                 return;
2977
2978         // make sure the velocity is sane (not a NaN)
2979         SV_CheckVelocity(ent);
2980
2981         // don't run physics here if running asynchronously
2982         if (host_client->clmovement_inputtimeout <= 0)
2983         {
2984                 SV_PlayerPhysics();
2985                 //host_client->cmd.time = max(host_client->cmd.time, sv.time);
2986         }
2987
2988         // make sure the velocity is still sane (not a NaN)
2989         SV_CheckVelocity(ent);
2990
2991         // call standard client pre-think
2992         PRVM_serverglobalfloat(time) = sv.time;
2993         PRVM_serverglobaledict(self) = PRVM_EDICT_TO_PROG(ent);
2994         prog->ExecuteProgram(prog, PRVM_serverfunction(PlayerPreThink), "QC function PlayerPreThink is missing");
2995
2996         // make sure the velocity is still sane (not a NaN)
2997         SV_CheckVelocity(ent);
2998 }
2999
3000 static void SV_Physics_ClientEntity_PostThink(prvm_edict_t *ent)
3001 {
3002         prvm_prog_t *prog = SVVM_prog;
3003         // don't do physics on disconnected clients, FrikBot relies on this
3004         if (!host_client->begun)
3005                 return;
3006
3007         // make sure the velocity is sane (not a NaN)
3008         SV_CheckVelocity(ent);
3009
3010         // call standard player post-think
3011         PRVM_serverglobalfloat(time) = sv.time;
3012         PRVM_serverglobaledict(self) = PRVM_EDICT_TO_PROG(ent);
3013         prog->ExecuteProgram(prog, PRVM_serverfunction(PlayerPostThink), "QC function PlayerPostThink is missing");
3014
3015         // make sure the velocity is still sane (not a NaN)
3016         SV_CheckVelocity(ent);
3017
3018         if(PRVM_serveredictfloat(ent, fixangle))
3019         {
3020                 // angle fixing was requested by physics code...
3021                 // so store the current angles for later use
3022                 VectorCopy(PRVM_serveredictvector(ent, angles), host_client->fixangle_angles);
3023                 host_client->fixangle_angles_set = true;
3024
3025                 // and clear fixangle for the next frame
3026                 PRVM_serveredictfloat(ent, fixangle) = 0;
3027         }
3028
3029         // decrement the countdown variable used to decide when to go back to
3030         // synchronous physics
3031         if (host_client->clmovement_inputtimeout > sv.frametime)
3032                 host_client->clmovement_inputtimeout -= sv.frametime;
3033         else
3034                 host_client->clmovement_inputtimeout = 0;
3035 }
3036
3037 static void SV_Physics_ClientEntity(prvm_edict_t *ent)
3038 {
3039         prvm_prog_t *prog = SVVM_prog;
3040         // don't do physics on disconnected clients, FrikBot relies on this
3041         if (!host_client->begun)
3042         {
3043                 memset(&host_client->cmd, 0, sizeof(host_client->cmd));
3044                 return;
3045         }
3046
3047         // make sure the velocity is sane (not a NaN)
3048         SV_CheckVelocity(ent);
3049
3050         switch ((int) PRVM_serveredictfloat(ent, movetype))
3051         {
3052         case MOVETYPE_PUSH:
3053         case MOVETYPE_FAKEPUSH:
3054                 SV_Physics_Pusher (ent);
3055                 break;
3056         case MOVETYPE_NONE:
3057                 // LadyHavoc: manually inlined the thinktime check here because MOVETYPE_NONE is used on so many objects
3058                 if (PRVM_serveredictfloat(ent, nextthink) > 0 && PRVM_serveredictfloat(ent, nextthink) <= sv.time + sv.frametime)
3059                         SV_RunThink (ent);
3060                 break;
3061         case MOVETYPE_FOLLOW:
3062                 SV_RunThink (ent);
3063                 if (host_client->clmovement_inputtimeout <= 0) // don't run physics here if running asynchronously
3064                         SV_Physics_Follow (ent);
3065                 break;
3066         case MOVETYPE_NOCLIP:
3067                 SV_RunThink(ent);
3068                 if (host_client->clmovement_inputtimeout <= 0) // don't run physics here if running asynchronously
3069                 {
3070                         SV_CheckWater(ent);
3071                         VectorMA(PRVM_serveredictvector(ent, origin), sv.frametime, PRVM_serveredictvector(ent, velocity), PRVM_serveredictvector(ent, origin));
3072                         VectorMA(PRVM_serveredictvector(ent, angles), sv.frametime, PRVM_serveredictvector(ent, avelocity), PRVM_serveredictvector(ent, angles));
3073                 }
3074                 break;
3075         case MOVETYPE_STEP:
3076                 if (host_client->clmovement_inputtimeout <= 0) // don't run physics here if running asynchronously
3077                         SV_Physics_Step (ent);
3078                 if (SV_RunThink(ent))
3079                 if (ent->priv.server->waterposition_forceupdate || !VectorCompare(PRVM_serveredictvector(ent, origin), ent->priv.server->waterposition_origin))
3080                 {
3081                         ent->priv.server->waterposition_forceupdate = false;
3082                         VectorCopy(PRVM_serveredictvector(ent, origin), ent->priv.server->waterposition_origin);
3083                         SV_CheckWaterTransition(ent);
3084                 }
3085                 break;
3086         case MOVETYPE_WALK:
3087                 SV_RunThink (ent);
3088                 // don't run physics here if running asynchronously
3089                 if (host_client->clmovement_inputtimeout <= 0)
3090                         SV_WalkMove (ent);
3091                 break;
3092         case MOVETYPE_TOSS:
3093         case MOVETYPE_BOUNCE:
3094         case MOVETYPE_BOUNCEMISSILE:
3095         case MOVETYPE_FLYMISSILE:
3096                 // regular thinking
3097                 SV_RunThink (ent);
3098                 if (host_client->clmovement_inputtimeout <= 0) // don't run physics here if running asynchronously
3099                         SV_Physics_Toss (ent);
3100                 break;
3101         case MOVETYPE_FLY:
3102         case MOVETYPE_FLY_WORLDONLY:
3103                 SV_RunThink (ent);
3104                 if (host_client->clmovement_inputtimeout <= 0) // don't run physics here if running asynchronously
3105                         SV_WalkMove (ent);
3106                 break;
3107         case MOVETYPE_PHYSICS:
3108                 SV_RunThink (ent);
3109                 break;
3110         default:
3111                 if((int) PRVM_serveredictfloat(ent, movetype) >= MOVETYPE_USER_FIRST && (int) PRVM_serveredictfloat(ent, movetype) <= MOVETYPE_USER_LAST)
3112                         break;
3113                 Con_Printf ("SV_Physics_ClientEntity: bad movetype %i\n", (int)PRVM_serveredictfloat(ent, movetype));
3114                 break;
3115         }
3116
3117         SV_CheckVelocity (ent);
3118
3119         SV_LinkEdict(ent);
3120         SV_LinkEdict_TouchAreaGrid(ent);
3121
3122         SV_CheckVelocity (ent);
3123 }
3124
3125 /*
3126 ================
3127 SV_Physics
3128
3129 ================
3130 */
3131 void SV_Physics (void)
3132 {
3133         prvm_prog_t *prog = SVVM_prog;
3134         int i;
3135         prvm_edict_t *ent;
3136
3137         // free memory for resources that are no longer referenced
3138         PRVM_GarbageCollection(prog);
3139
3140 // let the progs know that a new frame has started
3141         PRVM_serverglobaledict(self) = PRVM_EDICT_TO_PROG(prog->edicts);
3142         PRVM_serverglobaledict(other) = PRVM_EDICT_TO_PROG(prog->edicts);
3143         PRVM_serverglobalfloat(time) = sv.time;
3144         PRVM_serverglobalfloat(frametime) = sv.frametime;
3145         prog->ExecuteProgram(prog, PRVM_serverfunction(StartFrame), "QC function StartFrame is missing");
3146
3147 #ifdef USEODE
3148         // run physics engine
3149         World_Physics_Frame(&sv.world, sv.frametime, sv_gravity.value);
3150 #endif
3151
3152 //
3153 // treat each object in turn
3154 //
3155
3156         // if force_retouch, relink all the entities
3157         if (PRVM_serverglobalfloat(force_retouch) > 0)
3158                 for (i = 1, ent = PRVM_EDICT_NUM(i);i < prog->num_edicts;i++, ent = PRVM_NEXT_EDICT(ent))
3159                         if (!ent->free)
3160                                 SV_LinkEdict_TouchAreaGrid(ent); // force retouch even for stationary
3161
3162         if (sv_gameplayfix_consistentplayerprethink.integer)
3163         {
3164                 // run physics on the client entities in 3 stages
3165                 for (i = 1, ent = PRVM_EDICT_NUM(i), host_client = svs.clients;i <= svs.maxclients;i++, ent = PRVM_NEXT_EDICT(ent), host_client++)
3166                         if (!ent->free)
3167                                 SV_Physics_ClientEntity_PreThink(ent);
3168
3169                 for (i = 1, ent = PRVM_EDICT_NUM(i), host_client = svs.clients;i <= svs.maxclients;i++, ent = PRVM_NEXT_EDICT(ent), host_client++)
3170                         if (!ent->free)
3171                                 SV_Physics_ClientEntity(ent);
3172
3173                 for (i = 1, ent = PRVM_EDICT_NUM(i), host_client = svs.clients;i <= svs.maxclients;i++, ent = PRVM_NEXT_EDICT(ent), host_client++)
3174                         if (!ent->free)
3175                                 SV_Physics_ClientEntity_PostThink(ent);
3176         }
3177         else
3178         {
3179                 // run physics on the client entities
3180                 for (i = 1, ent = PRVM_EDICT_NUM(i), host_client = svs.clients;i <= svs.maxclients;i++, ent = PRVM_NEXT_EDICT(ent), host_client++)
3181                 {
3182                         if (!ent->free)
3183                         {
3184                                 SV_Physics_ClientEntity_PreThink(ent);
3185                                 SV_Physics_ClientEntity(ent);
3186                                 SV_Physics_ClientEntity_PostThink(ent);
3187                         }
3188                 }
3189         }
3190
3191         // run physics on all the non-client entities
3192         if (!sv_freezenonclients.integer)
3193         {
3194                 for (;i < prog->num_edicts;i++, ent = PRVM_NEXT_EDICT(ent))
3195                         if (!ent->free)
3196                                 SV_Physics_Entity(ent);
3197                 // make a second pass to see if any ents spawned this frame and make
3198                 // sure they run their move/think
3199                 if (sv_gameplayfix_delayprojectiles.integer < 0)
3200                         for (i = svs.maxclients + 1, ent = PRVM_EDICT_NUM(i);i < prog->num_edicts;i++, ent = PRVM_NEXT_EDICT(ent))
3201                                 if (!ent->priv.server->move && !ent->free)
3202                                         SV_Physics_Entity(ent);
3203         }
3204
3205         if (PRVM_serverglobalfloat(force_retouch) > 0)
3206                 PRVM_serverglobalfloat(force_retouch) = max(0, PRVM_serverglobalfloat(force_retouch) - 1);
3207
3208         // LadyHavoc: endframe support
3209         if (PRVM_serverfunction(EndFrame))
3210         {
3211                 PRVM_serverglobaledict(self) = PRVM_EDICT_TO_PROG(prog->edicts);
3212                 PRVM_serverglobaledict(other) = PRVM_EDICT_TO_PROG(prog->edicts);
3213                 PRVM_serverglobalfloat(time) = sv.time;
3214                 prog->ExecuteProgram(prog, PRVM_serverfunction(EndFrame), "QC function EndFrame is missing");
3215         }
3216
3217         // decrement prog->num_edicts if the highest number entities died
3218         for (;PRVM_ED_CanAlloc(prog, PRVM_EDICT_NUM(prog->num_edicts - 1));prog->num_edicts--);
3219
3220         if (!sv_freezenonclients.integer)
3221                 sv.time += sv.frametime;
3222 }