qcsrc/common/mapobjects/trigger/jumppads.qc

   1 #include "jumppads.qh"
   2 // TODO: split target_push and put it in the target folder
   3 #ifdef SVQC
   4 #include <common/physics/movetypes/movetypes.qh>
   5
   6 void trigger_push_use(entity this, entity actor, entity trigger)
   7 {
   8         if(teamplay)
   9         {
  10                 this.team = actor.team;
  11                 this.SendFlags |= SF_TRIGGER_UPDATE;
  12         }
  13 }
  14 #endif
  15
  16 REGISTER_NET_LINKED(ENT_CLIENT_TRIGGER_PUSH)
  17 REGISTER_NET_LINKED(ENT_CLIENT_TARGET_PUSH)
  18
  19 /*
  20         trigger_push_calculatevelocity
  21
  22         Arguments:
  23           org - origin of the object which is to be pushed
  24           tgt - target entity (can be either a point or a model entity; if it is
  25                 the latter, its midpoint is used)
  26           ht  - jump height, measured from the higher one of org and tgt's midpoint
  27           pushed_entity - object that is to be pushed
  28
  29         Returns: velocity for the jump
  30  */
  31 vector trigger_push_calculatevelocity(vector org, entity tgt, float ht, entity pushed_entity)
  32 {
  33         float grav, sdist, zdist, vs, vz, jumpheight;
  34         vector sdir, torg;
  35
  36         torg = tgt.origin + (tgt.mins + tgt.maxs) * 0.5;
  37
  38         grav = PHYS_GRAVITY(NULL);
  39         if(pushed_entity && PHYS_ENTGRAVITY(pushed_entity))
  40                 grav *= PHYS_ENTGRAVITY(pushed_entity);
  41
  42         zdist = torg.z - org.z;
  43         sdist = vlen(torg - org - zdist * '0 0 1');
  44         sdir = normalize(torg - org - zdist * '0 0 1');
  45
  46         // how high do we need to push the player?
  47         jumpheight = fabs(ht);
  48         if(zdist > 0)
  49                 jumpheight = jumpheight + zdist;
  50
  51         /*
  52                 STOP.
  53
  54                 You will not understand the following equations anyway...
  55                 But here is what I did to get them.
  56
  57                 I used the functions
  58
  59                   s(t) = t * vs
  60                   z(t) = t * vz - 1/2 grav t^2
  61
  62                 and solved for:
  63
  64                   s(ti) = sdist
  65                   z(ti) = zdist
  66                   max(z, ti) = jumpheight
  67
  68                 From these three equations, you will find the three parameters vs, vz
  69                 and ti.
  70          */
  71
  72         // push him so high...
  73         vz = sqrt(fabs(2 * grav * jumpheight)); // NOTE: sqrt(positive)!
  74
  75         // we start with downwards velocity only if it's a downjump and the jump apex should be outside the jump!
  76         if(ht < 0)
  77                 if(zdist < 0)
  78                         vz = -vz;
  79
  80         vector solution;
  81         solution = solve_quadratic(0.5 * grav, -vz, zdist); // equation "z(ti) = zdist"
  82         // ALWAYS solvable because jumpheight >= zdist
  83         if(!solution.z)
  84                 solution_y = solution.x; // just in case it is not solvable due to roundoff errors, assume two equal solutions at their center (this is mainly for the usual case with ht == 0)
  85         if(zdist == 0)
  86                 solution_x = solution.y; // solution_x is 0 in this case, so don't use it, but rather use solution_y (which will be sqrt(0.5 * jumpheight / grav), actually)
  87
  88         float flighttime;
  89         if(zdist < 0)
  90         {
  91                 // down-jump
  92                 if(ht < 0)
  93                 {
  94                         // almost straight line type
  95                         // jump apex is before the jump
  96                         // we must take the larger one
  97                         flighttime = solution.y;
  98                 }
  99                 else
 100                 {
 101                         // regular jump
 102                         // jump apex is during the jump
 103                         // we must take the larger one too
 104                         flighttime = solution.y;
 105                 }
 106         }
 107         else
 108         {
 109                 // up-jump
 110                 if(ht < 0)
 111                 {
 112                         // almost straight line type
 113                         // jump apex is after the jump
 114                         // we must take the smaller one
 115                         flighttime = solution.x;
 116                 }
 117                 else
 118                 {
 119                         // regular jump
 120                         // jump apex is during the jump
 121                         // we must take the larger one
 122                         flighttime = solution.y;
 123                 }
 124         }
 125         vs = sdist / flighttime;
 126
 127         // finally calculate the velocity
 128         return sdir * vs + '0 0 1' * vz;
 129 }
 130
 131 bool jumppad_push(entity this, entity targ)
 132 {
 133         if (!isPushable(targ))
 134                 return false;
 135
 136         vector org = targ.origin;
 137 #ifdef SVQC
 138         if(autocvar_sv_vq3compat)
 139 #elif defined(CSQC)
 140         if(STAT(VQ3COMPAT))
 141 #endif
 142         {
 143                 org.z += targ.mins_z;
 144                 org.z += 1; // off by 1!
 145         }
 146
 147         if(this.enemy)
 148         {
 149                 targ.velocity = trigger_push_calculatevelocity(org, this.enemy, this.height, targ);
 150         }
 151         else if(this.target && this.target != "")
 152         {
 153                 entity e;
 154                 RandomSelection_Init();
 155                 for(e = NULL; (e = find(e, targetname, this.target)); )
 156                 {
 157                         if(e.cnt)
 158                                 RandomSelection_AddEnt(e, e.cnt, 1);
 159                         else
 160                                 RandomSelection_AddEnt(e, 1, 1);
 161                 }
 162                 targ.velocity = trigger_push_calculatevelocity(org, RandomSelection_chosen_ent, this.height, targ);
 163         }
 164         else
 165         {
 166                 targ.velocity = this.movedir;
 167         }
 168
 169         UNSET_ONGROUND(targ);
 170
 171 #ifdef CSQC
 172         if (targ.flags & FL_PROJECTILE)
 173         {
 174                 targ.angles = vectoangles (targ.velocity);
 175                 switch(targ.move_movetype)
 176                 {
 177                         case MOVETYPE_FLY:
 178                                 set_movetype(targ, MOVETYPE_TOSS);
 179                                 targ.gravity = 1;
 180                                 break;
 181                         case MOVETYPE_BOUNCEMISSILE:
 182                                 set_movetype(targ, MOVETYPE_BOUNCE);
 183                                 targ.gravity = 1;
 184                                 break;
 185                 }
 186         }
 187 #endif
 188
 189 #ifdef SVQC
 190         if (IS_PLAYER(targ))
 191         {
 192                 // reset tracking of oldvelocity for impact damage (sudden velocity changes)
 193                 targ.oldvelocity = targ.velocity;
 194
 195                 if(this.pushltime < time)  // prevent "snorring" sound when a player hits the jumppad more than once
 196                 {
 197                         // flash when activated
 198                         Send_Effect(EFFECT_JUMPPAD, targ.origin, targ.velocity, 1);
 199                         _sound (targ, CH_TRIGGER, this.noise, VOL_BASE, ATTEN_NORM);
 200                         this.pushltime = time + 0.2;
 201                 }
 202                 if(IS_REAL_CLIENT(targ) || IS_BOT_CLIENT(targ))
 203                 {
 204                         bool found = false;
 205                         for(int i = 0; i < targ.jumppadcount && i < NUM_JUMPPADSUSED; ++i)
 206                                 if(targ.(jumppadsused[i]) == this)
 207                                         found = true;
 208                         if(!found)
 209                         {
 210                                 targ.(jumppadsused[targ.jumppadcount % NUM_JUMPPADSUSED]) = this;
 211                                 targ.jumppadcount = targ.jumppadcount + 1;
 212                         }
 213
 214                         if(IS_REAL_CLIENT(targ))
 215                         {
 216                                 if(this.message)
 217                                         centerprint(targ, this.message);
 218                         }
 219                         else
 220                         {
 221                                 targ.lastteleporttime = time;
 222                                 targ.lastteleport_origin = targ.origin;
 223                         }
 224
 225                         if (!IS_DEAD(targ))
 226                                 animdecide_setaction(targ, ANIMACTION_JUMP, true);
 227                 }
 228                 else
 229                         targ.jumppadcount = 1;
 230
 231                 // reset tracking of who pushed you into a hazard (for kill credit)
 232                 targ.pushltime = 0;
 233                 targ.istypefrag = 0;
 234         }
 235
 236         if(this.enemy.target)
 237                 SUB_UseTargets(this.enemy, targ, this);
 238
 239         if (targ.flags & FL_PROJECTILE)
 240         {
 241                 targ.angles = vectoangles (targ.velocity);
 242                 targ.com_phys_gravity_factor = 1;
 243                 switch(targ.move_movetype)
 244                 {
 245                         case MOVETYPE_FLY:
 246                                 set_movetype(targ, MOVETYPE_TOSS);
 247                                 targ.gravity = 1;
 248                                 break;
 249                         case MOVETYPE_BOUNCEMISSILE:
 250                                 set_movetype(targ, MOVETYPE_BOUNCE);
 251                                 targ.gravity = 1;
 252                                 break;
 253                 }
 254                 UpdateCSQCProjectile(targ);
 255         }
 256 #endif
 257
 258         return true;
 259 }
 260
 261 void trigger_push_touch(entity this, entity toucher)
 262 {
 263         if (this.active == ACTIVE_NOT)
 264                 return;
 265
 266         if(this.team)
 267                 if(((this.spawnflags & INVERT_TEAMS) == 0) == (DIFF_TEAM(this, toucher)))
 268                         return;
 269
 270         EXACTTRIGGER_TOUCH(this, toucher);
 271
 272         noref bool success = jumppad_push(this, toucher);
 273
 274 #ifdef SVQC
 275         if (success && (this.spawnflags & PUSH_ONCE))
 276         {
 277                 settouch(this, func_null);
 278                 setthink(this, SUB_Remove);
 279                 this.nextthink = time;
 280         }
 281 #endif
 282 }
 283
 284 #ifdef SVQC
 285 void trigger_push_link(entity this);
 286 void trigger_push_updatelink(entity this);
 287 bool trigger_push_testorigin(entity tracetest_ent, entity targ, entity jp, vector org)
 288 {
 289         setorigin(tracetest_ent, org);
 290         tracetoss(tracetest_ent, tracetest_ent);
 291         if(trace_startsolid)
 292                 return false;
 293
 294         if (!jp.height)
 295         {
 296                 // since tracetoss starting from jumppad's origin often fails when target
 297                 // is very close to real destination, start it directly from target's
 298                 // origin instead
 299                 vector ofs = '0 0 0';
 300                 if (vdist(vec2(tracetest_ent.velocity), <, autocvar_sv_maxspeed))
 301                         ofs = stepheightvec;
 302
 303                 tracetest_ent.velocity.z = 0;
 304                 setorigin(tracetest_ent, targ.origin + ofs);
 305                 tracetoss(tracetest_ent, tracetest_ent);
 306                 if (trace_startsolid && ofs.z)
 307                 {
 308                         setorigin(tracetest_ent, targ.origin + ofs / 2);
 309                         tracetoss(tracetest_ent, tracetest_ent);
 310                         if (trace_startsolid && ofs.z)
 311                         {
 312                                 setorigin(tracetest_ent, targ.origin);
 313                                 tracetoss(tracetest_ent, tracetest_ent);
 314                                 if (trace_startsolid)
 315                                         return false;
 316                         }
 317                 }
 318         }
 319         tracebox(trace_endpos, tracetest_ent.mins, tracetest_ent.maxs, trace_endpos - eZ * 1500, true, tracetest_ent);
 320         return true;
 321 }
 322
 323 bool trigger_push_testorigin_for_item(entity tracetest_ent, entity item, vector org)
 324 {
 325         setorigin(tracetest_ent, org);
 326         tracetoss(tracetest_ent, tracetest_ent);
 327
 328         if(trace_startsolid)
 329                 return false;
 330         if (trace_ent == item)
 331                 return true;
 332
 333         tracebox(trace_endpos, tracetest_ent.mins, tracetest_ent.maxs, trace_endpos - eZ * 1500, true, tracetest_ent);
 334
 335         if (trace_ent == item)
 336                 return true;
 337
 338         return false;
 339 }
 340 #endif
 341
 342 /// if (item != NULL) returns true if the item can be reached by using this jumppad, false otherwise
 343 /// if (item == NULL) tests jumppad's trajectory and eventually spawns waypoints for it (return value doesn't matter)
 344 bool trigger_push_test(entity this, entity item)
 345 {
 346         // first calculate a typical start point for the jump
 347         vector org = (this.absmin + this.absmax) * 0.5;
 348         org.z = this.absmax.z - PL_MIN_CONST.z - 7;
 349
 350         if (this.target)
 351         {
 352                 int n = 0;
 353 #ifdef SVQC
 354                 vector vel = '0 0 0';
 355 #endif
 356                 for(entity t = NULL; (t = find(t, targetname, this.target)); )
 357                 {
 358                         ++n;
 359 #ifdef SVQC
 360                         if(t.move_movetype != MOVETYPE_NONE)
 361                                 continue;
 362
 363                         entity e = spawn();
 364                         setsize(e, PL_MIN_CONST, PL_MAX_CONST);
 365                         e.dphitcontentsmask = DPCONTENTS_SOLID | DPCONTENTS_BODY | DPCONTENTS_PLAYERCLIP | DPCONTENTS_BOTCLIP;
 366                         e.velocity = trigger_push_calculatevelocity(org, t, this.height, e);
 367
 368                         vel = e.velocity;
 369                         vector best_target = '0 0 0';
 370                         vector best_org = '0 0 0';
 371                         vector best_vel = '0 0 0';
 372                         bool valid_best_target = false;
 373                         if (item)
 374                         {
 375                                 if (!trigger_push_testorigin_for_item(e, item, org))
 376                                 {
 377                                         delete(e);
 378                                         return false;
 379                                 }
 380                         }
 381                         else
 382                         {
 383                                 if (trigger_push_testorigin(e, t, this, org))
 384                                 {
 385                                         best_target = trace_endpos;
 386                                         best_org = org;
 387                                         best_vel = e.velocity;
 388                                         valid_best_target = true;
 389                                 }
 390                         }
 391
 392                         vector new_org;
 393                         vector dist = t.origin - org;
 394                         if (dist.x || dist.y) // if not perfectly vertical
 395                         {
 396                                 // test trajectory with different starting points, sometimes the trajectory
 397                                 // starting from the jumppad origin can't reach the real destination
 398                                 // and destination waypoint ends up near the jumppad itself
 399                                 vector flatdir = normalize(dist - eZ * dist.z);
 400                                 vector ofs = flatdir * 0.5 * min(fabs(this.absmax.x - this.absmin.x), fabs(this.absmax.y - this.absmin.y));
 401                                 new_org = org + ofs;
 402
 403                                 LABEL(new_test)
 404                                 e.velocity = trigger_push_calculatevelocity(new_org, t, this.height, e);
 405                                 if (item)
 406                                 {
 407                                         if (!trigger_push_testorigin_for_item(e, item, new_org))
 408                                         {
 409                                                 delete(e);
 410                                                 return false;
 411                                         }
 412                                 }
 413                                 else
 414                                 {
 415                                         vel = e.velocity;
 416                                         if (vdist(vec2(e.velocity), <, autocvar_sv_maxspeed))
 417                                                 e.velocity = autocvar_sv_maxspeed * flatdir;
 418                                         if (trigger_push_testorigin(e, t, this, new_org) && (!valid_best_target || trace_endpos.z > best_target.z + 50))
 419                                         {
 420                                                 best_target = trace_endpos;
 421                                                 best_org = new_org;
 422                                                 best_vel = vel;
 423                                                 valid_best_target = true;
 424                                         }
 425                                 }
 426                                 if (ofs && new_org != org - ofs)
 427                                 {
 428                                         new_org = org - ofs;
 429                                         goto new_test;
 430                                 }
 431                         }
 432
 433                         if (item)
 434                         {
 435                                 delete(e);
 436                                 return true;
 437                         }
 438
 439                         if (valid_best_target)
 440                         {
 441                                 if (!(boxesoverlap(this.absmin, this.absmax + eZ * 50, best_target + PL_MIN_CONST, best_target + PL_MAX_CONST)))
 442                                 {
 443                                         float velxy = vlen(vec2(best_vel));
 444                                         float cost = vlen(vec2(t.origin - best_org)) / velxy;
 445                                         if(velxy < autocvar_sv_maxspeed)
 446                                                 velxy = autocvar_sv_maxspeed;
 447                                         cost += vlen(vec2(best_target - t.origin)) / velxy;
 448                                         waypoint_spawnforteleporter(this, best_target, cost, e);
 449                                 }
 450                         }
 451                         delete(e);
 452 #endif
 453                 }
 454
 455                 if(item)
 456                         return false;
 457
 458                 if(!n)
 459                 {
 460                         // no dest!
 461 #ifdef SVQC
 462                         objerror (this, "Jumppad with nonexistant target");
 463 #endif
 464                         return false;
 465                 }
 466                 else if(n == 1)
 467                 {
 468                         // exactly one dest - bots love that
 469                         this.enemy = find(NULL, targetname, this.target);
 470                 }
 471                 else
 472                 {
 473                         // have to use random selection every single time
 474                         this.enemy = NULL;
 475                 }
 476         }
 477 #ifdef SVQC
 478         else
 479         {
 480                 entity e = spawn();
 481                 setsize(e, PL_MIN_CONST, PL_MAX_CONST);
 482                 e.dphitcontentsmask = DPCONTENTS_SOLID | DPCONTENTS_BODY | DPCONTENTS_PLAYERCLIP | DPCONTENTS_BOTCLIP;
 483                 setorigin(e, org);
 484                 e.velocity = this.movedir;
 485                 tracetoss(e, e);
 486                 if (item)
 487                 {
 488                         bool r = (trace_ent == item);
 489                         delete(e);
 490                         return r;
 491                 }
 492                 if (!(boxesoverlap(this.absmin, this.absmax + eZ * 50, trace_endpos + PL_MIN_CONST, trace_endpos + PL_MAX_CONST)))
 493                         waypoint_spawnforteleporter(this, trace_endpos, vlen(trace_endpos - org) / vlen(e.velocity), e);
 494                 delete(e);
 495         }
 496
 497         defer(this, 0.1, trigger_push_updatelink);
 498 #endif
 499         return true;
 500 }
 501
 502 void trigger_push_findtarget(entity this)
 503 {
 504         trigger_push_test(this, NULL);
 505 }
 506
 507 #ifdef SVQC
 508 float trigger_push_send(entity this, entity to, float sf)
 509 {
 510         WriteHeader(MSG_ENTITY, ENT_CLIENT_TRIGGER_PUSH);
 511
 512         WriteByte(MSG_ENTITY, this.team);
 513         WriteInt24_t(MSG_ENTITY, this.spawnflags);
 514         WriteByte(MSG_ENTITY, this.active);
 515         WriteCoord(MSG_ENTITY, this.height);
 516
 517         WriteVector(MSG_ENTITY, this.movedir);
 518
 519         trigger_common_write(this, true);
 520
 521         return true;
 522 }
 523
 524 void trigger_push_updatelink(entity this)
 525 {
 526         this.SendFlags |= SF_TRIGGER_INIT;
 527 }
 528
 529 void trigger_push_link(entity this)
 530 {
 531         trigger_link(this, trigger_push_send);
 532 }
 533
 534 /*
 535  * ENTITY PARAMETERS:
 536  *
 537  *   target:  target of jump
 538  *   height:  the absolute value is the height of the highest point of the jump
 539  *            trajectory above the higher one of the player and the target.
 540  *            the sign indicates whether the highest point is INSIDE (positive)
 541  *            or OUTSIDE (negative) of the jump trajectory. General rule: use
 542  *            positive values for targets mounted on the floor, and use negative
 543  *            values to target a point on the ceiling.
 544  *   movedir: if target is not set, this * speed * 10 is the velocity to be reached.
 545  */
 546 spawnfunc(trigger_push)
 547 {
 548         SetMovedir(this);
 549
 550         trigger_init(this);
 551
 552         this.active = ACTIVE_ACTIVE;
 553         this.use = trigger_push_use;
 554         settouch(this, trigger_push_touch);
 555
 556         // normal push setup
 557         if (!this.speed)
 558                 this.speed = 1000;
 559         this.movedir = this.movedir * this.speed * 10;
 560
 561         if (!this.noise)
 562                 this.noise = "misc/jumppad.wav";
 563         precache_sound (this.noise);
 564
 565         trigger_push_link(this); // link it now
 566
 567         IL_PUSH(g_jumppads, this);
 568
 569         // this must be called to spawn the teleport waypoints for bots
 570         InitializeEntity(this, trigger_push_findtarget, INITPRIO_FINDTARGET);
 571 }
 572
 573
 574 bool target_push_send(entity this, entity to, float sf)
 575 {
 576         WriteHeader(MSG_ENTITY, ENT_CLIENT_TARGET_PUSH);
 577
 578         WriteByte(MSG_ENTITY, this.cnt);
 579         WriteString(MSG_ENTITY, this.targetname);
 580         WriteVector(MSG_ENTITY, this.origin);
 581
 582         WriteAngle(MSG_ENTITY, this.angles_x);
 583         WriteAngle(MSG_ENTITY, this.angles_y);
 584         WriteAngle(MSG_ENTITY, this.angles_z);
 585
 586         return true;
 587 }
 588
 589 void target_push_use(entity this, entity actor, entity trigger)
 590 {
 591         if(trigger.classname == "trigger_push" || trigger == this)
 592                 return; // WTF, why is this a thing
 593
 594         jumppad_push(this, actor);
 595 }
 596
 597 void target_push_link(entity this)
 598 {
 599         BITSET_ASSIGN(this.effects, EF_NODEPTHTEST);
 600         Net_LinkEntity(this, false, 0, target_push_send);
 601         //this.SendFlags |= 1; // update
 602 }
 603
 604 void target_push_init(entity this)
 605 {
 606         this.mangle = this.angles;
 607         setorigin(this, this.origin);
 608         target_push_link(this);
 609 }
 610
 611 void target_push_init2(entity this)
 612 {
 613         if(this.target && this.target != "") // we have an old style pusher!
 614         {
 615                 InitializeEntity(this, trigger_push_findtarget, INITPRIO_FINDTARGET);
 616                 this.use = target_push_use;
 617         }
 618
 619         target_push_init(this); // normal push target behaviour can be combined with a legacy pusher?
 620 }
 621
 622 spawnfunc(target_push)
 623 {
 624         target_push_init2(this);
 625 }
 626
 627 spawnfunc(info_notnull)
 628 {
 629         target_push_init(this);
 630 }
 631 spawnfunc(target_position)
 632 {
 633         target_push_init(this);
 634 }
 635
 636 #elif defined(CSQC)
 637
 638 NET_HANDLE(ENT_CLIENT_TRIGGER_PUSH, bool isnew)
 639 {
 640         this.classname = "jumppad";
 641         int mytm = ReadByte();
 642         if(mytm)
 643         {
 644                 this.team = mytm - 1;
 645         }
 646         this.spawnflags = ReadInt24_t();
 647         this.active = ReadByte();
 648         this.height = ReadCoord();
 649
 650         this.movedir = ReadVector();
 651
 652         trigger_common_read(this, true);
 653
 654         this.entremove = trigger_remove_generic;
 655         this.solid = SOLID_TRIGGER;
 656         settouch(this, trigger_push_touch);
 657         this.move_time = time;
 658         defer(this, 0.25, trigger_push_findtarget);
 659
 660         return true;
 661 }
 662
 663 void target_push_remove(entity this)
 664 {
 665         // strfree(this.classname);
 666         strfree(this.targetname);
 667 }
 668
 669 NET_HANDLE(ENT_CLIENT_TARGET_PUSH, bool isnew)
 670 {
 671         this.classname = "push_target";
 672         this.cnt = ReadByte();
 673         this.targetname = strzone(ReadString());
 674         this.origin = ReadVector();
 675
 676         this.angles_x = ReadAngle();
 677         this.angles_y = ReadAngle();
 678         this.angles_z = ReadAngle();
 679
 680         return = true;
 681
 682         setorigin(this, this.origin);
 683
 684         this.drawmask = MASK_NORMAL;
 685         this.entremove = target_push_remove;
 686 }
 687 #endif