qcsrc/common/physics/movetypes/movetypes.qc

   1 #include "../player.qh"
   2
   3 #if defined(CSQC)
   4         #include <client/defs.qh>
   5         #include <common/stats.qh>
   6         #include <common/util.qh>
   7         #include "movetypes.qh"
   8         #include <lib/csqcmodel/common.qh>
   9         #include <common/t_items.qh>
  10 #elif defined(MENUQC)
  11 #elif defined(SVQC)
  12         #include <server/autocvars.qh>
  13 #endif
  14
  15 void _Movetype_WallFriction(entity this, vector stepnormal)  // SV_WallFriction
  16 {
  17         /*float d, i;
  18         vector into, side;
  19         makevectors(this.v_angle);
  20         d = (stepnormal * v_forward) + 0.5;
  21
  22         if(d < 0)
  23         {
  24             i = (stepnormal * this.move_velocity);
  25             into = i * stepnormal;
  26             side = this.move_velocity - into;
  27             this.move_velocity_x = side.x * (1 * d);
  28             this.move_velocity_y = side.y * (1 * d);
  29         }*/
  30 }
  31
  32 vector planes[MAX_CLIP_PLANES];
  33 int _Movetype_FlyMove(entity this, float dt, bool applygravity, vector stepnormal, float stepheight) // SV_FlyMove
  34 {
  35         int blocked = 0, bumpcount;
  36         int i, j, numplanes = 0;
  37         float time_left = dt, grav = 0;
  38         vector push;
  39         vector primal_velocity, original_velocity, restore_velocity;
  40
  41         for(i = 0; i < MAX_CLIP_PLANES; ++i)
  42                 planes[i] = '0 0 0';
  43
  44         if(applygravity)
  45         {
  46                 this.move_didgravity = 1;
  47                 grav = dt * (PHYS_ENTGRAVITY(this) ? PHYS_ENTGRAVITY(this) : 1) * PHYS_GRAVITY(this);
  48
  49                 if(!GAMEPLAYFIX_NOGRAVITYONGROUND || !(this.move_flags & FL_ONGROUND))
  50                 {
  51                         if(GAMEPLAYFIX_GRAVITYUNAFFECTEDBYTICRATE)
  52                                 this.move_velocity_z -= grav * 0.5;
  53                         else
  54                                 this.move_velocity_z -= grav;
  55                 }
  56         }
  57
  58         original_velocity = primal_velocity = restore_velocity = this.move_velocity;
  59
  60         for(bumpcount = 0;bumpcount < MAX_CLIP_PLANES;bumpcount++)
  61         {
  62                 if(this.move_velocity == '0 0 0')
  63                         break;
  64
  65                 push = this.move_velocity * time_left;
  66                 _Movetype_PushEntity(this, push, true);
  67                 if(trace_startsolid)
  68                 {
  69                         // we got teleported by a touch function
  70                         // let's abort the move
  71                         blocked |= 8;
  72                         break;
  73                 }
  74
  75                 // this code is used by MOVETYPE_WALK and MOVETYPE_STEP and SV_UnstickEntity
  76                 // abort move if we're stuck in the world (and didn't make it out)
  77                 if(trace_startsolid && trace_allsolid)
  78                 {
  79                         this.move_velocity = restore_velocity;
  80                         return 3;
  81                 }
  82
  83                 if(trace_fraction == 1)
  84                         break;
  85
  86                 float my_trace_fraction = trace_fraction;
  87                 vector my_trace_plane_normal = trace_plane_normal;
  88
  89                 if(trace_plane_normal.z)
  90                 {
  91                         if(trace_plane_normal.z > 0.7)
  92                         {
  93                                 // floor
  94                                 blocked |= 1;
  95
  96                                 if(!trace_ent)
  97                                 {
  98                                         //dprint("_Movetype_FlyMove: !trace_ent\n");
  99                                         trace_ent = NULL;
 100                                 }
 101
 102                                 this.move_flags |= FL_ONGROUND;
 103                                 this.move_groundentity = trace_ent;
 104                         }
 105                 }
 106                 else if(stepheight)
 107                 {
 108                         // step - handle it immediately
 109                         vector org = this.move_origin;
 110                         vector steppush = '0 0 1' * stepheight;
 111
 112                         _Movetype_PushEntity(this, steppush, true);
 113                         if(trace_startsolid)
 114                         {
 115                                 blocked |= 8;
 116                                 break;
 117                         }
 118                         _Movetype_PushEntity(this, push, true);
 119                         if(trace_startsolid)
 120                         {
 121                                 blocked |= 8;
 122                                 break;
 123                         }
 124                         float trace2_fraction = trace_fraction;
 125                         steppush = '0 0 1' * (org_z - this.move_origin_z);
 126                         _Movetype_PushEntity(this, steppush, true);
 127                         if(trace_startsolid)
 128                         {
 129                                 blocked |= 8;
 130                                 break;
 131                         }
 132
 133                         // accept the new position if it made some progress...
 134                         if(fabs(this.move_origin_x - org_x) >= 0.03125 || fabs(this.move_origin_y - org_y) >= 0.03125)
 135                         {
 136                                 trace_endpos = this.move_origin;
 137                                 time_left *= 1 - trace2_fraction;
 138                                 numplanes = 0;
 139                                 continue;
 140                         }
 141                         else
 142                                 this.move_origin = org;
 143                 }
 144                 else
 145                 {
 146                         // step - return it to caller
 147                         blocked |= 2;
 148                         // save the trace for player extrafriction
 149                         if(stepnormal)
 150                                 stepnormal = trace_plane_normal;
 151                 }
 152
 153                 if(my_trace_fraction >= 0.001)
 154                 {
 155                         // actually covered some distance
 156                         original_velocity = this.move_velocity;
 157                         numplanes = 0;
 158                 }
 159
 160                 time_left *= 1 - my_trace_fraction;
 161
 162                 // clipped to another plane
 163                 if(numplanes >= MAX_CLIP_PLANES)
 164                 {
 165                         // this shouldn't really happen
 166                         this.move_velocity = '0 0 0';
 167                         blocked = 3;
 168                         break;
 169                 }
 170
 171                 planes[numplanes] = my_trace_plane_normal;
 172                 numplanes++;
 173
 174                 // modify original_velocity so it parallels all of the clip planes
 175                 vector new_velocity = '0 0 0';
 176                 for (i = 0;i < numplanes;i++)
 177                 {
 178                         new_velocity = _Movetype_ClipVelocity(original_velocity, planes[i], 1);
 179                         for (j = 0;j < numplanes;j++)
 180                         {
 181                                 if(j != i)
 182                                 {
 183                                         // not ok
 184                                         if((new_velocity * planes[j]) < 0)
 185                                                 break;
 186                                 }
 187                         }
 188                         if(j == numplanes)
 189                                 break;
 190                 }
 191
 192                 if(i != numplanes)
 193                 {
 194                         // go along this plane
 195                         this.move_velocity = new_velocity;
 196                 }
 197                 else
 198                 {
 199                         // go along the crease
 200                         if(numplanes != 2)
 201                         {
 202                                 this.move_velocity = '0 0 0';
 203                                 blocked = 7;
 204                                 break;
 205                         }
 206                         vector dir = cross(planes[0], planes[1]);
 207                         // LordHavoc: thanks to taniwha of QuakeForge for pointing out this fix for slowed falling in corners
 208                         float ilength = sqrt((dir * dir));
 209                         if(ilength)
 210                                 ilength = 1.0 / ilength;
 211                         dir.x *= ilength;
 212                         dir.y *= ilength;
 213                         dir.z *= ilength;
 214                         float d = (dir * this.move_velocity);
 215                         this.move_velocity = dir * d;
 216                 }
 217
 218                 // if current velocity is against the original velocity,
 219                 // stop dead to avoid tiny occilations in sloping corners
 220                 if((this.move_velocity * primal_velocity) <= 0)
 221                 {
 222                         this.move_velocity = '0 0 0';
 223                         break;
 224                 }
 225         }
 226
 227         // LordHavoc: this came from QW and allows you to get out of water more easily
 228         if(GAMEPLAYFIX_EASIERWATERJUMP(this) && (this.move_flags & FL_WATERJUMP) && !(blocked & 8))
 229                 this.move_velocity = primal_velocity;
 230
 231         if(applygravity)
 232         {
 233                 if(!GAMEPLAYFIX_NOGRAVITYONGROUND || !(this.move_flags & FL_ONGROUND))
 234                 {
 235                         if(GAMEPLAYFIX_GRAVITYUNAFFECTEDBYTICRATE)
 236                                 this.move_velocity_z -= grav * 0.5f;
 237                 }
 238         }
 239
 240         return blocked;
 241 }
 242
 243 void _Movetype_CheckVelocity(entity this)  // SV_CheckVelocity
 244 {
 245         // if(vlen(this.move_velocity) < 0.0001)
 246         // this.move_velocity = '0 0 0';
 247 }
 248
 249 bool _Movetype_CheckWater(entity this)  // SV_CheckWater
 250 {
 251         vector point = this.move_origin;
 252         point.z += this.mins.z + 1;
 253
 254         int nativecontents = pointcontents(point);
 255         if(this.move_watertype && this.move_watertype != nativecontents)
 256         {
 257                 // dprintf("_Movetype_CheckWater(): Original: '%d', New: '%d'\n", this.move_watertype, nativecontents);
 258                 if(this.contentstransition)
 259                         this.contentstransition(this.move_watertype, nativecontents);
 260         }
 261
 262         this.move_waterlevel = WATERLEVEL_NONE;
 263         this.move_watertype = CONTENT_EMPTY;
 264
 265         int supercontents = Mod_Q1BSP_SuperContentsFromNativeContents(nativecontents);
 266         if(supercontents & DPCONTENTS_LIQUIDSMASK)
 267         {
 268                 this.move_watertype = nativecontents;
 269                 this.move_waterlevel = WATERLEVEL_WETFEET;
 270                 point.z = this.move_origin.z + (this.mins.z + this.maxs.z) * 0.5;
 271                 if(Mod_Q1BSP_SuperContentsFromNativeContents(pointcontents(point)) & DPCONTENTS_LIQUIDSMASK)
 272                 {
 273                         this.move_waterlevel = WATERLEVEL_SWIMMING;
 274                         point.z = this.move_origin.z + this.view_ofs.z;
 275                         if(Mod_Q1BSP_SuperContentsFromNativeContents(pointcontents(point)) & DPCONTENTS_LIQUIDSMASK)
 276                                 this.move_waterlevel = WATERLEVEL_SUBMERGED;
 277                 }
 278         }
 279
 280         return this.move_waterlevel > 1;
 281 }
 282
 283 void _Movetype_CheckWaterTransition(entity ent)  // SV_CheckWaterTransition
 284 {
 285         int contents = pointcontents(ent.move_origin);
 286
 287         if(!ent.move_watertype)
 288         {
 289                 // just spawned here
 290                 if(!autocvar_cl_gameplayfix_fixedcheckwatertransition)
 291                 {
 292                         ent.move_watertype = contents;
 293                         ent.move_waterlevel = 1;
 294                         return;
 295                 }
 296         }
 297         else if(ent.move_watertype != contents)
 298         {
 299                 // dprintf("_Movetype_CheckWaterTransition(): Origin: %s, Direct: '%d', Original: '%d', New: '%d'\n", vtos(ent.move_origin), pointcontents(ent.move_origin), ent.move_watertype, contents);
 300                 if(ent.contentstransition)
 301                         ent.contentstransition(ent.move_watertype, contents);
 302         }
 303
 304         if(contents <= CONTENT_WATER)
 305         {
 306                 ent.move_watertype = contents;
 307                 ent.move_waterlevel = 1;
 308         }
 309         else
 310         {
 311                 ent.move_watertype = CONTENT_EMPTY;
 312                 ent.move_waterlevel = (autocvar_cl_gameplayfix_fixedcheckwatertransition ? 0 : contents);
 313         }
 314 }
 315
 316 void _Movetype_Impact(entity this, entity oth)  // SV_Impact
 317 {
 318         entity oldother = other;
 319
 320         if(gettouch(this))
 321         {
 322                 other = oth;
 323
 324                 gettouch(this)(this);
 325
 326                 other = oldother;
 327         }
 328
 329         if(gettouch(oth))
 330         {
 331                 other = this;
 332
 333                 gettouch(oth)(oth);
 334
 335                 other = oldother;
 336         }
 337 }
 338
 339 void _Movetype_LinkEdict_TouchAreaGrid(entity this)  // SV_LinkEdict_TouchAreaGrid
 340 {
 341         if(this.solid == SOLID_NOT)
 342                 return;
 343
 344         entity oldother = other;
 345
 346     FOREACH_ENTITY_RADIUS(0.5 * (this.absmin + this.absmax), 0.5 * vlen(this.absmax - this.absmin), true, {
 347                 if (it.solid == SOLID_TRIGGER && it != this)
 348                 if (it.move_nomonsters != MOVE_NOMONSTERS && it.move_nomonsters != MOVE_WORLDONLY)
 349                 if (gettouch(it) && boxesoverlap(it.absmin, it.absmax, this.absmin, this.absmax))
 350                 {
 351                         other = this;
 352
 353                         trace_allsolid = false;
 354                         trace_startsolid = false;
 355                         trace_fraction = 1;
 356                         trace_inwater = false;
 357                         trace_inopen = true;
 358                         trace_endpos = it.move_origin;
 359                         trace_plane_normal = '0 0 1';
 360                         trace_plane_dist = 0;
 361                         trace_ent = this;
 362
 363                         gettouch(it)(it);
 364                 }
 365     });
 366
 367         other = oldother;
 368 }
 369
 370 void _Movetype_LinkEdict(entity this, bool touch_triggers)  // SV_LinkEdict
 371 {
 372         vector mi, ma;
 373         if(this.solid == SOLID_BSP)
 374         {
 375                 // TODO set the absolute bbox
 376                 mi = this.mins;
 377                 ma = this.maxs;
 378         }
 379         else
 380         {
 381                 mi = this.mins;
 382                 ma = this.maxs;
 383         }
 384         mi += this.move_origin;
 385         ma += this.move_origin;
 386
 387         if(this.move_flags & FL_ITEM)
 388         {
 389                 mi.x -= 15;
 390                 mi.y -= 15;
 391                 mi.z -= 1;
 392                 ma.x += 15;
 393                 ma.y += 15;
 394                 ma.z += 1;
 395         }
 396         else
 397         {
 398                 mi.x -= 1;
 399                 mi.y -= 1;
 400                 mi.z -= 1;
 401                 ma.x += 1;
 402                 ma.y += 1;
 403                 ma.z += 1;
 404         }
 405
 406         this.absmin = mi;
 407         this.absmax = ma;
 408
 409         if(touch_triggers)
 410                 _Movetype_LinkEdict_TouchAreaGrid(this);
 411 }
 412
 413 entity _Movetype_TestEntityPosition_ent;
 414 bool _Movetype_TestEntityPosition(vector ofs)  // SV_TestEntityPosition
 415 {
 416     entity this = _Movetype_TestEntityPosition_ent;
 417 //      vector org = this.move_origin + ofs;
 418
 419         int cont = this.dphitcontentsmask;
 420         this.dphitcontentsmask = DPCONTENTS_SOLID;
 421         tracebox(this.move_origin, this.mins, this.maxs, this.move_origin, ((this.move_movetype == MOVETYPE_FLY_WORLDONLY) ? MOVE_WORLDONLY : MOVE_NOMONSTERS), this);
 422         this.dphitcontentsmask = cont;
 423
 424         if(trace_startsolid)
 425                 return true;
 426
 427         if(vdist(trace_endpos - this.move_origin, >, 0.0001))
 428                 this.move_origin = trace_endpos;
 429         return false;
 430 }
 431
 432 bool _Movetype_UnstickEntity(entity this)  // SV_UnstickEntity
 433 {
 434     _Movetype_TestEntityPosition_ent = this;
 435         if (!_Movetype_TestEntityPosition(' 0  0  0')) {
 436             return true;
 437         }
 438         #define X(v) if (_Movetype_TestEntityPosition(v))
 439         X('-1  0  0') X(' 1  0  0')
 440         X(' 0 -1  0') X(' 0  1  0')
 441         X('-1 -1  0') X(' 1 -1  0')
 442         X('-1  1  0') X(' 1  1  0')
 443         #undef X
 444         {
 445         #define X(i) \
 446             if (_Movetype_TestEntityPosition('0 0 -1' * i)) \
 447             if (_Movetype_TestEntityPosition('0 0 1' * i))
 448         X(01) X(02) X(03) X(04) X(05) X(06) X(07) X(08)
 449         X(09) X(10) X(11) X(12) X(13) X(14) X(15) X(16)
 450         X(17)
 451         #undef X
 452         {
 453             LOG_DEBUGF("Can't unstick an entity (edict: %d, classname: %s, origin: %s)\n",
 454                 etof(this), this.classname, vtos(this.move_origin));
 455             return false;
 456         }
 457         }
 458         LOG_DEBUGF("Sucessfully unstuck an entity (edict: %d, classname: %s, origin: %s)\n",
 459                 etof(this), this.classname, vtos(this.move_origin));
 460         _Movetype_LinkEdict(this, true);
 461         return true;
 462 }
 463
 464 vector _Movetype_ClipVelocity(vector vel, vector norm, float f)  // SV_ClipVelocity
 465 {
 466         vel -= ((vel * norm) * norm) * f;
 467
 468         if(vel.x > -0.1 && vel.x < 0.1) vel.x = 0;
 469         if(vel.y > -0.1 && vel.y < 0.1) vel.y = 0;
 470         if(vel.z > -0.1 && vel.z < 0.1) vel.z = 0;
 471
 472         return vel;
 473 }
 474
 475 void _Movetype_PushEntityTrace(entity this, vector push)
 476 {
 477         vector end = this.move_origin + push;
 478         int type;
 479         if(this.move_nomonsters)
 480                 type = max(0, this.move_nomonsters);
 481         else if(this.move_movetype == MOVETYPE_FLYMISSILE)
 482                 type = MOVE_MISSILE;
 483         else if(this.move_movetype == MOVETYPE_FLY_WORLDONLY)
 484                 type = MOVE_WORLDONLY;
 485         else if(this.solid == SOLID_TRIGGER || this.solid == SOLID_NOT)
 486                 type = MOVE_NOMONSTERS;
 487         else
 488                 type = MOVE_NORMAL;
 489
 490         tracebox(this.move_origin, this.mins, this.maxs, end, type, this);
 491 }
 492
 493 float _Movetype_PushEntity(entity this, vector push, bool failonstartsolid)  // SV_PushEntity
 494 {
 495         _Movetype_PushEntityTrace(this, push);
 496
 497         if(trace_startsolid && failonstartsolid)
 498                 return trace_fraction;
 499
 500         this.move_origin = trace_endpos;
 501
 502         if(trace_fraction < 1)
 503                 if(this.solid >= SOLID_TRIGGER && (!(this.move_flags & FL_ONGROUND) || (this.move_groundentity != trace_ent)))
 504                         _Movetype_Impact(this, trace_ent);
 505
 506         return trace_fraction;
 507 }
 508
 509
 510 .float ltime;
 511 .void() blocked;
 512 // matrix version of makevectors, sets v_forward, v_right and v_up
 513 void makevectors_matrix(vector myangles)  // AngleVectorsFLU
 514 {
 515         v_forward = v_right = v_up = '0 0 0';
 516
 517         float y = myangles.y * (M_PI * 2 / 360);
 518         float sy = sin(y);
 519         float cy = cos(y);
 520         float p = myangles.x * (M_PI * 2 / 360);
 521         float sp = sin(p);
 522         float cp = cos(p);
 523         if(v_forward)
 524         {
 525                 v_forward.x = cp * cy;
 526                 v_forward.y = cp * sy;
 527                 v_forward.z = -sp;
 528         }
 529         if(v_right || v_up)
 530         {
 531                 if(myangles.z)
 532                 {
 533                         float r = myangles.z * (M_PI * 2 / 360);
 534                         float sr = sin(r);
 535                         float cr = cos(r);
 536                         if(v_right)
 537                         {
 538                                 v_right.x = sr * sp * cy + cr * -sy;
 539                                 v_right.y = sr * sp * sy + cr * cy;
 540                                 v_right.z = sr * cp;
 541                         }
 542                         if(v_up)
 543                         {
 544                                 v_up.x = cr * sp * cy + -sr * -sy;
 545                                 v_up.y = cr * sp * sy + -sr * cy;
 546                                 v_up.z = cr * cp;
 547                         }
 548                 }
 549                 else
 550                 {
 551                         if(v_right)
 552                         {
 553                                 v_right.x = -sy;
 554                                 v_right.y = cy;
 555                                 v_right.z = 0;
 556                         }
 557                         if(v_up)
 558                         {
 559                                 v_up.x = sp * cy;
 560                                 v_up.y = sp * sy;
 561                                 v_up.z = cp;
 562                         }
 563                 }
 564         }
 565 }
 566
 567 void _Movetype_Physics_Frame(entity this, float movedt)
 568 {
 569         this.move_didgravity = -1;
 570         switch (this.move_movetype)
 571         {
 572                 case MOVETYPE_PUSH:
 573                 case MOVETYPE_FAKEPUSH:
 574                         _Movetype_Physics_Pusher(this, movedt);
 575                         break;
 576                 case MOVETYPE_NONE:
 577                         break;
 578                 case MOVETYPE_FOLLOW:
 579                         _Movetype_Physics_Follow(this);
 580                         break;
 581                 case MOVETYPE_NOCLIP:
 582                         _Movetype_CheckWater(this);
 583                         this.move_origin = this.move_origin + TICRATE * this.move_velocity;
 584                         this.move_angles = this.move_angles + TICRATE * this.move_avelocity;
 585                         _Movetype_LinkEdict(this, false);
 586                         break;
 587                 case MOVETYPE_STEP:
 588                         _Movetype_Physics_Step(this, movedt);
 589                         break;
 590                 case MOVETYPE_WALK:
 591                         _Movetype_Physics_Walk(this, movedt);
 592                         break;
 593                 case MOVETYPE_TOSS:
 594                 case MOVETYPE_BOUNCE:
 595                 case MOVETYPE_BOUNCEMISSILE:
 596                 case MOVETYPE_FLYMISSILE:
 597                 case MOVETYPE_FLY:
 598                 case MOVETYPE_FLY_WORLDONLY:
 599                         _Movetype_Physics_Toss(this, movedt);
 600                         _Movetype_LinkEdict(this, true);
 601                         break;
 602                 case MOVETYPE_PHYSICS:
 603                         break;
 604         }
 605 }
 606
 607 void _Movetype_Physics_ClientFrame(entity this, float movedt)
 608 {
 609         this.move_didgravity = -1;
 610         switch (this.move_movetype)
 611         {
 612                 case MOVETYPE_PUSH:
 613                 case MOVETYPE_FAKEPUSH:
 614                         _Movetype_Physics_Pusher(this, movedt);
 615                         break;
 616                 case MOVETYPE_NONE:
 617                         break;
 618                 case MOVETYPE_FOLLOW:
 619                         _Movetype_Physics_Follow(this);
 620                         break;
 621                 case MOVETYPE_NOCLIP:
 622                         _Movetype_CheckWater(this);
 623                         this.move_origin = this.move_origin + TICRATE * this.move_velocity;
 624                         this.move_angles = this.move_angles + TICRATE * this.move_avelocity;
 625                         _Movetype_LinkEdict(this, false);
 626                         break;
 627                 case MOVETYPE_STEP:
 628                         _Movetype_Physics_Step(this, movedt);
 629                         break;
 630                 case MOVETYPE_WALK:
 631                 case MOVETYPE_FLY:
 632                 case MOVETYPE_FLY_WORLDONLY:
 633                         _Movetype_Physics_Walk(this, movedt);
 634                         break;
 635                 case MOVETYPE_TOSS:
 636                 case MOVETYPE_BOUNCE:
 637                 case MOVETYPE_BOUNCEMISSILE:
 638                 case MOVETYPE_FLYMISSILE:
 639                         _Movetype_Physics_Toss(this, movedt);
 640                         break;
 641                 case MOVETYPE_PHYSICS:
 642                         break;
 643         }
 644 }
 645
 646 void Movetype_Physics_NoMatchServer(entity this)  // optimized
 647 {
 648         float movedt = time - this.move_time;
 649         this.move_time = time;
 650
 651         _Movetype_Physics_Frame(this, movedt);
 652         if(wasfreed(this))
 653                 return;
 654
 655         this.avelocity = this.move_avelocity;
 656         this.velocity = this.move_velocity;
 657         this.angles = this.move_angles;
 658         setorigin(this, this.move_origin);
 659 }
 660
 661 void Movetype_Physics_MatchServer(entity this, bool sloppy)
 662 {
 663         Movetype_Physics_MatchTicrate(this, TICRATE, sloppy);
 664 }
 665
 666 void Movetype_Physics_MatchTicrate(entity this, float tr, bool sloppy)  // SV_Physics_Entity
 667 {
 668         if(tr <= 0)
 669         {
 670                 Movetype_Physics_NoMatchServer(this);
 671                 return;
 672         }
 673
 674         float dt = time - this.move_time;
 675
 676         int n = max(0, floor(dt / tr));
 677         dt -= n * tr;
 678         this.move_time += n * tr;
 679
 680         if(!this.move_didgravity)
 681                 this.move_didgravity = ((this.move_movetype == MOVETYPE_BOUNCE || this.move_movetype == MOVETYPE_TOSS) && !(this.move_flags & FL_ONGROUND));
 682
 683         for (int i = 0; i < n; ++i)
 684         {
 685                 _Movetype_Physics_Frame(this, tr);
 686                 if(wasfreed(this))
 687                         return;
 688         }
 689
 690         this.avelocity = this.move_avelocity;
 691
 692         if(dt > 0 && this.move_movetype != MOVETYPE_NONE && !(this.move_flags & FL_ONGROUND))
 693         {
 694                 // now continue the move from move_time to time
 695                 this.velocity = this.move_velocity;
 696
 697                 if(this.move_didgravity > 0)
 698                 {
 699                         this.velocity_z -= (GAMEPLAYFIX_GRAVITYUNAFFECTEDBYTICRATE ? 0.5 : 1)
 700                             * dt
 701                             * (this.gravity ? this.gravity : 1)
 702                             * PHYS_GRAVITY(this);
 703                 }
 704
 705                 this.angles = this.move_angles + dt * this.avelocity;
 706
 707                 if(sloppy || this.move_movetype == MOVETYPE_NOCLIP)
 708                 {
 709                         setorigin(this, this.move_origin + dt * this.velocity);
 710                 }
 711                 else
 712                 {
 713                         _Movetype_PushEntityTrace(this, dt * this.velocity);
 714                         if(!trace_startsolid)
 715                                 setorigin(this, trace_endpos);
 716                 }
 717
 718                 if(this.move_didgravity > 0 && GAMEPLAYFIX_GRAVITYUNAFFECTEDBYTICRATE)
 719                         this.velocity_z -= 0.5 * dt * (this.gravity ? this.gravity : 1) * PHYS_GRAVITY(this);
 720         }
 721         else
 722         {
 723                 this.velocity = this.move_velocity;
 724                 this.angles = this.move_angles;
 725                 setorigin(this, this.move_origin);
 726         }
 727 }