qcsrc/common/triggers/trigger/jumppads.qc

   1 #include "jumppads.qh"
   2 // TODO: split target_push and put it in the target folder
   3 #ifdef SVQC
   4 #include "jumppads.qh"
   5 #include <common/physics/movetypes/movetypes.qh>
   6
   7 void trigger_push_use(entity this, entity actor, entity trigger)
   8 {
   9         if(teamplay)
  10         {
  11                 this.team = actor.team;
  12                 this.SendFlags |= 2;
  13         }
  14 }
  15 #endif
  16
  17 REGISTER_NET_LINKED(ENT_CLIENT_TRIGGER_PUSH)
  18 REGISTER_NET_LINKED(ENT_CLIENT_TARGET_PUSH)
  19
  20 /*
  21         trigger_push_calculatevelocity
  22
  23         Arguments:
  24           org - origin of the object which is to be pushed
  25           tgt - target entity (can be either a point or a model entity; if it is
  26                 the latter, its midpoint is used)
  27           ht  - jump height, measured from the higher one of org and tgt's midpoint
  28
  29         Returns: velocity for the jump
  30  */
  31 vector trigger_push_calculatevelocity(vector org, entity tgt, float ht)
  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(other);
  39         if(PHYS_ENTGRAVITY(other))
  40                 grav *= PHYS_ENTGRAVITY(other);
  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         if(this.enemy)
 137         {
 138                 targ.velocity = trigger_push_calculatevelocity(targ.origin, this.enemy, this.height);
 139         }
 140         else if(this.target && this.target != "")
 141         {
 142                 entity e;
 143                 RandomSelection_Init();
 144                 for(e = NULL; (e = find(e, targetname, this.target)); )
 145                 {
 146                         if(e.cnt)
 147                                 RandomSelection_AddEnt(e, e.cnt, 1);
 148                         else
 149                                 RandomSelection_AddEnt(e, 1, 1);
 150                 }
 151                 targ.velocity = trigger_push_calculatevelocity(targ.origin, RandomSelection_chosen_ent, this.height);
 152         }
 153         else
 154         {
 155                 targ.velocity = this.movedir;
 156         }
 157
 158         UNSET_ONGROUND(targ);
 159
 160 #ifdef CSQC
 161         if (targ.flags & FL_PROJECTILE)
 162         {
 163                 targ.angles = vectoangles (targ.velocity);
 164                 switch(targ.move_movetype)
 165                 {
 166                         case MOVETYPE_FLY:
 167                                 set_movetype(targ, MOVETYPE_TOSS);
 168                                 targ.gravity = 1;
 169                                 break;
 170                         case MOVETYPE_BOUNCEMISSILE:
 171                                 set_movetype(targ, MOVETYPE_BOUNCE);
 172                                 targ.gravity = 1;
 173                                 break;
 174                 }
 175         }
 176 #endif
 177
 178 #ifdef SVQC
 179         if (IS_PLAYER(targ))
 180         {
 181                 // reset tracking of oldvelocity for impact damage (sudden velocity changes)
 182                 targ.oldvelocity = targ.velocity;
 183
 184                 if(this.pushltime < time)  // prevent "snorring" sound when a player hits the jumppad more than once
 185                 {
 186                         // flash when activated
 187                         Send_Effect(EFFECT_JUMPPAD, targ.origin, targ.velocity, 1);
 188                         _sound (targ, CH_TRIGGER, this.noise, VOL_BASE, ATTEN_NORM);
 189                         this.pushltime = time + 0.2;
 190                 }
 191                 if(IS_REAL_CLIENT(targ) || IS_BOT_CLIENT(targ))
 192                 {
 193                         bool found = false;
 194                         for(int i = 0; i < targ.jumppadcount && i < NUM_JUMPPADSUSED; ++i)
 195                                 if(targ.(jumppadsused[i]) == this)
 196                                         found = true;
 197                         if(!found)
 198                         {
 199                                 targ.(jumppadsused[targ.jumppadcount % NUM_JUMPPADSUSED]) = this;
 200                                 targ.jumppadcount = targ.jumppadcount + 1;
 201                         }
 202
 203                         if(IS_REAL_CLIENT(targ))
 204                         {
 205                                 if(this.message)
 206                                         centerprint(targ, this.message);
 207                         }
 208                         else
 209                                 targ.lastteleporttime = time;
 210
 211                         if (!IS_DEAD(targ))
 212                                 animdecide_setaction(targ, ANIMACTION_JUMP, true);
 213                 }
 214                 else
 215                         targ.jumppadcount = true;
 216
 217                 // reset tracking of who pushed you into a hazard (for kill credit)
 218                 targ.pushltime = 0;
 219                 targ.istypefrag = 0;
 220         }
 221
 222         if(this.enemy.target)
 223                 SUB_UseTargets(this.enemy, targ, this);
 224
 225         if (targ.flags & FL_PROJECTILE)
 226         {
 227                 targ.angles = vectoangles (targ.velocity);
 228                 targ.com_phys_gravity_factor = 1;
 229                 switch(targ.move_movetype)
 230                 {
 231                         case MOVETYPE_FLY:
 232                                 set_movetype(targ, MOVETYPE_TOSS);
 233                                 targ.gravity = 1;
 234                                 break;
 235                         case MOVETYPE_BOUNCEMISSILE:
 236                                 set_movetype(targ, MOVETYPE_BOUNCE);
 237                                 targ.gravity = 1;
 238                                 break;
 239                 }
 240                 UpdateCSQCProjectile(targ);
 241         }
 242 #endif
 243
 244         return true;
 245 }
 246
 247 void trigger_push_touch(entity this, entity toucher)
 248 {
 249         if (this.active == ACTIVE_NOT)
 250                 return;
 251
 252         if(this.team)
 253                 if(((this.spawnflags & 4) == 0) == (DIFF_TEAM(this, toucher)))
 254                         return;
 255
 256         EXACTTRIGGER_TOUCH(this, toucher);
 257
 258         noref bool success = jumppad_push(this, toucher);
 259
 260 #ifdef SVQC
 261         if (success && (this.spawnflags & PUSH_ONCE))
 262         {
 263                 settouch(this, func_null);
 264                 setthink(this, SUB_Remove);
 265                 this.nextthink = time;
 266         }
 267 #endif
 268 }
 269
 270 #ifdef SVQC
 271 void trigger_push_link(entity this);
 272 void trigger_push_updatelink(entity this);
 273 bool trigger_push_testorigin(entity tracetest_ent, entity targ, entity jp, vector org)
 274 {
 275         setorigin(tracetest_ent, org);
 276         tracetoss(tracetest_ent, tracetest_ent);
 277         if(trace_startsolid)
 278                 return false;
 279
 280         if(!jp.height)
 281         {
 282                 // since tracetoss starting from jumppad's origin often fails when target
 283                 // is very close to real destination, start it directly from target's
 284                 // origin instead
 285                 tracetest_ent.velocity.z = 0;
 286                 setorigin(tracetest_ent, targ.origin + stepheightvec);
 287                 tracetoss(tracetest_ent, tracetest_ent);
 288                 if(trace_startsolid)
 289                 {
 290                         setorigin(tracetest_ent, targ.origin + stepheightvec / 2);
 291                         tracetoss(tracetest_ent, tracetest_ent);
 292                         if(trace_startsolid)
 293                         {
 294                                 setorigin(tracetest_ent, targ.origin);
 295                                 tracetoss(tracetest_ent, tracetest_ent);
 296                                 if(trace_startsolid)
 297                                         return false;
 298                         }
 299                 }
 300         }
 301         tracebox(trace_endpos, tracetest_ent.mins, tracetest_ent.maxs, trace_endpos - eZ * 1500, true, tracetest_ent);
 302         return true;
 303 }
 304 #endif
 305 void trigger_push_findtarget(entity this)
 306 {
 307         // first calculate a typical start point for the jump
 308         vector org = (this.absmin + this.absmax) * 0.5;
 309         org.z = this.absmax.z - PL_MIN_CONST.z;
 310
 311         if (this.target)
 312         {
 313                 int n = 0;
 314 #ifdef SVQC
 315                 vector vel = '0 0 0';
 316 #endif
 317                 for(entity t = NULL; (t = find(t, targetname, this.target)); )
 318                 {
 319                         ++n;
 320 #ifdef SVQC
 321                         if(t.move_movetype != MOVETYPE_NONE)
 322                                 continue;
 323
 324                         entity e = spawn();
 325                         setsize(e, PL_MIN_CONST, PL_MAX_CONST);
 326                         e.dphitcontentsmask = DPCONTENTS_SOLID | DPCONTENTS_BODY | DPCONTENTS_PLAYERCLIP | DPCONTENTS_BOTCLIP;
 327                         e.velocity = trigger_push_calculatevelocity(org, t, this.height);
 328                         vel = e.velocity;
 329                         vector best_target = '0 0 0';
 330                         vector best_org = '0 0 0';
 331                         vector best_vel = '0 0 0';
 332                         bool valid_best_target = false;
 333                         if (trigger_push_testorigin(e, t, this, org))
 334                         {
 335                                 best_target = trace_endpos;
 336                                 best_org = org;
 337                                 best_vel = e.velocity;
 338                                 valid_best_target = true;
 339                         }
 340
 341                         vector new_org;
 342                         vector dist = t.origin - org;
 343                         if (dist.x || dist.y) // if not perfectly vertical
 344                         {
 345                                 // test trajectory with different starting points, sometimes the trajectory
 346                                 // starting from the jumppad origin can't reach the real destination
 347                                 // and destination waypoint ends up near the jumppad itself
 348                                 vector flatdir = normalize(dist - eZ * dist.z);
 349                                 vector ofs = flatdir * 0.5 * min(fabs(this.absmax.x - this.absmin.x), fabs(this.absmax.y - this.absmin.y));
 350                                 new_org = org + ofs;
 351                                 e.velocity = trigger_push_calculatevelocity(new_org, t, this.height);
 352                                 vel = e.velocity;
 353                                 if (vdist(vec2(e.velocity), <, autocvar_sv_maxspeed))
 354                                         e.velocity = autocvar_sv_maxspeed * flatdir;
 355                                 if (trigger_push_testorigin(e, t, this, new_org) && (!valid_best_target || trace_endpos.z > best_target.z + 50))
 356                                 {
 357                                         best_target = trace_endpos;
 358                                         best_org = new_org;
 359                                         best_vel = vel;
 360                                         valid_best_target = true;
 361                                 }
 362                                 new_org = org - ofs;
 363                                 e.velocity = trigger_push_calculatevelocity(new_org, t, this.height);
 364                                 vel = e.velocity;
 365                                 if (vdist(vec2(e.velocity), <, autocvar_sv_maxspeed))
 366                                         e.velocity = autocvar_sv_maxspeed * flatdir;
 367                                 if (trigger_push_testorigin(e, t, this, new_org) && (!valid_best_target || trace_endpos.z > best_target.z + 50))
 368                                 {
 369                                         best_target = trace_endpos;
 370                                         best_org = new_org;
 371                                         best_vel = vel;
 372                                         valid_best_target = true;
 373                                 }
 374                         }
 375
 376                         if (valid_best_target)
 377                         {
 378                                 if (!(boxesoverlap(this.absmin, this.absmax + eZ * 50, best_target + PL_MIN_CONST, best_target + PL_MAX_CONST)))
 379                                 {
 380                                         float velxy = vlen(vec2(best_vel));
 381                                         float cost = vlen(vec2(t.origin - best_org)) / velxy;
 382                                         if(velxy < autocvar_sv_maxspeed)
 383                                                 velxy = autocvar_sv_maxspeed;
 384                                         cost += vlen(vec2(best_target - t.origin)) / velxy;
 385                                         waypoint_spawnforteleporter(this, best_target, cost, e);
 386                                 }
 387                         }
 388                         delete(e);
 389 #endif
 390                 }
 391
 392                 if(!n)
 393                 {
 394                         // no dest!
 395 #ifdef SVQC
 396                         objerror (this, "Jumppad with nonexistant target");
 397 #endif
 398                         return;
 399                 }
 400                 else if(n == 1)
 401                 {
 402                         // exactly one dest - bots love that
 403                         this.enemy = find(NULL, targetname, this.target);
 404                 }
 405                 else
 406                 {
 407                         // have to use random selection every single time
 408                         this.enemy = NULL;
 409                 }
 410         }
 411 #ifdef SVQC
 412         else
 413         {
 414                 entity e = spawn();
 415                 setsize(e, PL_MIN_CONST, PL_MAX_CONST);
 416                 e.dphitcontentsmask = DPCONTENTS_SOLID | DPCONTENTS_BODY | DPCONTENTS_PLAYERCLIP | DPCONTENTS_BOTCLIP;
 417                 setorigin(e, org);
 418                 e.velocity = this.movedir;
 419                 tracetoss(e, e);
 420                 if (!(boxesoverlap(this.absmin, this.absmax + eZ * 50, trace_endpos + PL_MIN_CONST, trace_endpos + PL_MAX_CONST)))
 421                         waypoint_spawnforteleporter(this, trace_endpos, vlen(trace_endpos - org) / vlen(e.velocity), e);
 422                 delete(e);
 423         }
 424
 425         defer(this, 0.1, trigger_push_updatelink);
 426 #endif
 427 }
 428
 429 #ifdef SVQC
 430 float trigger_push_send(entity this, entity to, float sf)
 431 {
 432         WriteHeader(MSG_ENTITY, ENT_CLIENT_TRIGGER_PUSH);
 433
 434         WriteByte(MSG_ENTITY, this.team);
 435         WriteInt24_t(MSG_ENTITY, this.spawnflags);
 436         WriteByte(MSG_ENTITY, this.active);
 437         WriteCoord(MSG_ENTITY, this.height);
 438
 439         WriteCoord(MSG_ENTITY, this.movedir_x);
 440         WriteCoord(MSG_ENTITY, this.movedir_y);
 441         WriteCoord(MSG_ENTITY, this.movedir_z);
 442
 443         trigger_common_write(this, true);
 444
 445         return true;
 446 }
 447
 448 void trigger_push_updatelink(entity this)
 449 {
 450         this.SendFlags |= 1;
 451 }
 452
 453 void trigger_push_link(entity this)
 454 {
 455         trigger_link(this, trigger_push_send);
 456 }
 457
 458 /*
 459  * ENTITY PARAMETERS:
 460  *
 461  *   target:  target of jump
 462  *   height:  the absolute value is the height of the highest point of the jump
 463  *            trajectory above the higher one of the player and the target.
 464  *            the sign indicates whether the highest point is INSIDE (positive)
 465  *            or OUTSIDE (negative) of the jump trajectory. General rule: use
 466  *            positive values for targets mounted on the floor, and use negative
 467  *            values to target a point on the ceiling.
 468  *   movedir: if target is not set, this * speed * 10 is the velocity to be reached.
 469  */
 470 spawnfunc(trigger_push)
 471 {
 472         SetMovedir(this);
 473
 474         trigger_init(this);
 475
 476         this.active = ACTIVE_ACTIVE;
 477         this.use = trigger_push_use;
 478         settouch(this, trigger_push_touch);
 479
 480         // normal push setup
 481         if (!this.speed)
 482                 this.speed = 1000;
 483         this.movedir = this.movedir * this.speed * 10;
 484
 485         if (!this.noise)
 486                 this.noise = "misc/jumppad.wav";
 487         precache_sound (this.noise);
 488
 489         trigger_push_link(this); // link it now
 490
 491         // this must be called to spawn the teleport waypoints for bots
 492         InitializeEntity(this, trigger_push_findtarget, INITPRIO_FINDTARGET);
 493 }
 494
 495
 496 bool target_push_send(entity this, entity to, float sf)
 497 {
 498         WriteHeader(MSG_ENTITY, ENT_CLIENT_TARGET_PUSH);
 499
 500         WriteByte(MSG_ENTITY, this.cnt);
 501         WriteString(MSG_ENTITY, this.targetname);
 502         WriteCoord(MSG_ENTITY, this.origin_x);
 503         WriteCoord(MSG_ENTITY, this.origin_y);
 504         WriteCoord(MSG_ENTITY, this.origin_z);
 505
 506         WriteAngle(MSG_ENTITY, this.angles_x);
 507         WriteAngle(MSG_ENTITY, this.angles_y);
 508         WriteAngle(MSG_ENTITY, this.angles_z);
 509
 510         return true;
 511 }
 512
 513 void target_push_use(entity this, entity actor, entity trigger)
 514 {
 515         if(trigger.classname == "trigger_push" || trigger == this)
 516                 return; // WTF, why is this a thing
 517
 518         jumppad_push(this, actor);
 519 }
 520
 521 void target_push_link(entity this)
 522 {
 523         BITSET_ASSIGN(this.effects, EF_NODEPTHTEST);
 524         Net_LinkEntity(this, false, 0, target_push_send);
 525         //this.SendFlags |= 1; // update
 526 }
 527
 528 void target_push_init(entity this)
 529 {
 530         this.mangle = this.angles;
 531         setorigin(this, this.origin);
 532         target_push_link(this);
 533 }
 534
 535 void target_push_init2(entity this)
 536 {
 537         if(this.target && this.target != "") // we have an old style pusher!
 538         {
 539                 InitializeEntity(this, trigger_push_findtarget, INITPRIO_FINDTARGET);
 540                 this.use = target_push_use;
 541         }
 542
 543         target_push_init(this); // normal push target behaviour can be combined with a legacy pusher?
 544 }
 545
 546 spawnfunc(target_push) { target_push_init2(this); }
 547 spawnfunc(info_notnull) { target_push_init(this); }
 548 spawnfunc(target_position) { target_push_init(this); }
 549
 550 #elif defined(CSQC)
 551
 552 NET_HANDLE(ENT_CLIENT_TRIGGER_PUSH, bool isnew)
 553 {
 554         this.classname = "jumppad";
 555         int mytm = ReadByte(); if(mytm) { this.team = mytm - 1; }
 556         this.spawnflags = ReadInt24_t();
 557         this.active = ReadByte();
 558         this.height = ReadCoord();
 559
 560         this.movedir_x = ReadCoord();
 561         this.movedir_y = ReadCoord();
 562         this.movedir_z = ReadCoord();
 563
 564         trigger_common_read(this, true);
 565
 566         this.entremove = trigger_remove_generic;
 567         this.solid = SOLID_TRIGGER;
 568         settouch(this, trigger_push_touch);
 569         this.move_time = time;
 570         defer(this, 0.25, trigger_push_findtarget);
 571
 572         return true;
 573 }
 574
 575 void target_push_remove(entity this)
 576 {
 577         //if(this.classname)
 578                 //strunzone(this.classname);
 579         //this.classname = string_null;
 580
 581         if(this.targetname)
 582                 strunzone(this.targetname);
 583         this.targetname = string_null;
 584 }
 585
 586 NET_HANDLE(ENT_CLIENT_TARGET_PUSH, bool isnew)
 587 {
 588         this.classname = "push_target";
 589         this.cnt = ReadByte();
 590         this.targetname = strzone(ReadString());
 591         this.origin_x = ReadCoord();
 592         this.origin_y = ReadCoord();
 593         this.origin_z = ReadCoord();
 594
 595         this.angles_x = ReadAngle();
 596         this.angles_y = ReadAngle();
 597         this.angles_z = ReadAngle();
 598
 599         return = true;
 600
 601         setorigin(this, this.origin);
 602
 603         this.drawmask = MASK_NORMAL;
 604         this.entremove = target_push_remove;
 605 }
 606 #endif