1 // TODO: split target_push and put it in the target folder
4 #include "../../movetypes/movetypes.qh"
6 void trigger_push_use()
10 self.team = activator.team;
16 REGISTER_NET_LINKED(ENT_CLIENT_TRIGGER_PUSH)
17 REGISTER_NET_LINKED(ENT_CLIENT_TARGET_PUSH)
20 trigger_push_calculatevelocity
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
28 Returns: velocity for the jump
29 the global trigger_push_calculatevelocity_flighttime is set to the total
33 vector trigger_push_calculatevelocity(vector org, entity tgt, float ht)
35 float grav, sdist, zdist, vs, vz, jumpheight;
38 torg = tgt.origin + (tgt.mins + tgt.maxs) * 0.5;
40 grav = PHYS_GRAVITY(other);
41 if(PHYS_ENTGRAVITY(other))
42 grav *= PHYS_ENTGRAVITY(other);
44 zdist = torg.z - org.z;
45 sdist = vlen(torg - org - zdist * '0 0 1');
46 sdir = normalize(torg - org - zdist * '0 0 1');
48 // how high do we need to push the player?
49 jumpheight = fabs(ht);
51 jumpheight = jumpheight + zdist;
56 You will not understand the following equations anyway...
57 But here is what I did to get them.
62 z(t) = t * vz - 1/2 grav t^2
68 max(z, ti) = jumpheight
70 From these three equations, you will find the three parameters vs, vz
74 // push him so high...
75 vz = sqrt(fabs(2 * grav * jumpheight)); // NOTE: sqrt(positive)!
77 // we start with downwards velocity only if it's a downjump and the jump apex should be outside the jump!
83 solution = solve_quadratic(0.5 * grav, -vz, zdist); // equation "z(ti) = zdist"
84 // ALWAYS solvable because jumpheight >= zdist
86 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)
88 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)
95 // almost straight line type
96 // jump apex is before the jump
97 // we must take the larger one
98 trigger_push_calculatevelocity_flighttime = solution.y;
103 // jump apex is during the jump
104 // we must take the larger one too
105 trigger_push_calculatevelocity_flighttime = solution.y;
113 // almost straight line type
114 // jump apex is after the jump
115 // we must take the smaller one
116 trigger_push_calculatevelocity_flighttime = solution.x;
121 // jump apex is during the jump
122 // we must take the larger one
123 trigger_push_calculatevelocity_flighttime = solution.y;
126 vs = sdist / trigger_push_calculatevelocity_flighttime;
128 // finally calculate the velocity
129 return sdir * vs + '0 0 1' * vz;
132 void trigger_push_touch()
134 if (this.active == ACTIVE_NOT)
138 if (!isPushable(other))
143 if(((this.spawnflags & 4) == 0) == (DIFF_TEAM(this, other)))
150 other.velocity = trigger_push_calculatevelocity(other.origin, this.enemy, this.height);
151 other.move_velocity = other.velocity;
156 RandomSelection_Init();
157 for(e = world; (e = find(e, targetname, this.target)); )
160 RandomSelection_Add(e, 0, string_null, e.cnt, 1);
162 RandomSelection_Add(e, 0, string_null, 1, 1);
164 other.velocity = trigger_push_calculatevelocity(other.origin, RandomSelection_chosen_ent, this.height);
165 other.move_velocity = other.velocity;
169 other.velocity = this.movedir;
170 other.move_velocity = other.velocity;
174 UNSET_ONGROUND(other);
176 other.move_flags &= ~FL_ONGROUND;
180 if (IS_PLAYER(other))
182 // reset tracking of oldvelocity for impact damage (sudden velocity changes)
183 other.oldvelocity = other.velocity;
185 if(this.pushltime < time) // prevent "snorring" sound when a player hits the jumppad more than once
187 // flash when activated
188 Send_Effect(EFFECT_JUMPPAD, other.origin, other.velocity, 1);
189 _sound (other, CH_TRIGGER, this.noise, VOL_BASE, ATTEN_NORM);
190 this.pushltime = time + 0.2;
192 if(IS_REAL_CLIENT(other) || IS_BOT_CLIENT(other))
195 for(int i = 0; i < other.jumppadcount && i < NUM_JUMPPADSUSED; ++i)
196 if(other.(jumppadsused[i]) == this)
200 other.(jumppadsused[other.jumppadcount % NUM_JUMPPADSUSED]) = this;
201 other.jumppadcount = other.jumppadcount + 1;
204 if(IS_REAL_CLIENT(other))
207 centerprint(other, this.message);
210 other.lastteleporttime = time;
212 if (other.deadflag == DEAD_NO)
213 animdecide_setaction(other, ANIMACTION_JUMP, true);
216 other.jumppadcount = true;
218 // reset tracking of who pushed you into a hazard (for kill credit)
220 other.istypefrag = 0;
223 if(this.enemy.target)
226 WITH(entity, self, this.enemy, SUB_UseTargets());
229 if (other.flags & FL_PROJECTILE)
231 other.angles = vectoangles (other.velocity);
232 switch(other.movetype)
235 other.movetype = MOVETYPE_TOSS;
238 case MOVETYPE_BOUNCEMISSILE:
239 other.movetype = MOVETYPE_BOUNCE;
243 UpdateCSQCProjectile(other);
246 if (this.spawnflags & PUSH_ONCE)
248 this.touch = func_null;
249 this.think = SUB_Remove_self;
250 this.nextthink = time;
256 void trigger_push_link();
257 void trigger_push_updatelink();
259 void trigger_push_findtarget()
264 // first calculate a typical start point for the jump
265 org = (self.absmin + self.absmax) * 0.5;
266 org_z = self.absmax.z - PL_MIN.z;
271 for(t = world; (t = find(t, targetname, self.target)); )
277 setsize(e, PL_MIN, PL_MAX);
278 e.velocity = trigger_push_calculatevelocity(org, t, self.height);
280 if(e.movetype == MOVETYPE_NONE)
281 waypoint_spawnforteleporter(self, trace_endpos, vlen(trace_endpos - org) / vlen(e.velocity));
290 objerror ("Jumppad with nonexistant target");
296 // exactly one dest - bots love that
297 self.enemy = find(world, targetname, self.target);
301 // have to use random selection every single time
310 setsize(e, PL_MIN, PL_MAX);
311 e.velocity = self.movedir;
313 waypoint_spawnforteleporter(self, trace_endpos, vlen(trace_endpos - org) / vlen(e.velocity));
318 defer(self, 0.1, trigger_push_updatelink);
323 float trigger_push_send(entity this, entity to, float sf)
325 WriteHeader(MSG_ENTITY, ENT_CLIENT_TRIGGER_PUSH);
326 WriteByte(MSG_ENTITY, sf);
330 WriteByte(MSG_ENTITY, self.team);
331 WriteInt24_t(MSG_ENTITY, self.spawnflags);
332 WriteByte(MSG_ENTITY, self.active);
333 WriteCoord(MSG_ENTITY, self.height);
335 trigger_common_write(true);
340 WriteByte(MSG_ENTITY, self.team);
341 WriteByte(MSG_ENTITY, self.active);
347 void trigger_push_updatelink()
352 void trigger_push_link()
354 BITSET_ASSIGN(self.effects, EF_NODEPTHTEST);
355 Net_LinkEntity(self, false, 0, trigger_push_send);
361 * target: target of jump
362 * height: the absolute value is the height of the highest point of the jump
363 * trajectory above the higher one of the player and the target.
364 * the sign indicates whether the highest point is INSIDE (positive)
365 * or OUTSIDE (negative) of the jump trajectory. General rule: use
366 * positive values for targets mounted on the floor, and use negative
367 * values to target a point on the ceiling.
368 * movedir: if target is not set, this * speed * 10 is the velocity to be reached.
370 spawnfunc(trigger_push)
376 self.active = ACTIVE_ACTIVE;
377 self.use = trigger_push_use;
378 self.touch = trigger_push_touch;
383 self.movedir = self.movedir * self.speed * 10;
386 self.noise = "misc/jumppad.wav";
387 precache_sound (self.noise);
389 // this must be called to spawn the teleport waypoints for bots
390 InitializeEntity(self, trigger_push_findtarget, INITPRIO_FINDTARGET);
394 bool target_push_send(entity this, entity to, float sf)
396 WriteHeader(MSG_ENTITY, ENT_CLIENT_TARGET_PUSH);
398 WriteByte(MSG_ENTITY, self.cnt);
399 WriteString(MSG_ENTITY, self.targetname);
400 WriteCoord(MSG_ENTITY, self.origin_x);
401 WriteCoord(MSG_ENTITY, self.origin_y);
402 WriteCoord(MSG_ENTITY, self.origin_z);
404 WriteAngle(MSG_ENTITY, self.angles_x);
405 WriteAngle(MSG_ENTITY, self.angles_y);
406 WriteAngle(MSG_ENTITY, self.angles_z);
411 void target_push_link()
413 BITSET_ASSIGN(self.effects, EF_NODEPTHTEST);
414 Net_LinkEntity(self, false, 0, target_push_send);
415 //self.SendFlags |= 1; // update
418 spawnfunc(target_push) { target_push_link(); }
419 spawnfunc(info_notnull) { target_push_link(); }
420 spawnfunc(target_position) { make_pure(this); target_push_link(); }
424 NET_HANDLE(ENT_CLIENT_TRIGGER_PUSH, bool isnew)
427 float sf = ReadByte();
431 self.classname = "jumppad";
432 int mytm = ReadByte(); if(mytm) { self.team = mytm - 1; }
433 self.spawnflags = ReadInt24_t();
434 self.active = ReadByte();
435 self.height = ReadCoord();
437 trigger_common_read(true);
439 self.entremove = trigger_remove_generic;
440 self.solid = SOLID_TRIGGER;
441 //self.draw = trigger_draw_generic;
442 self.move_touch = trigger_push_touch;
443 self.drawmask = MASK_NORMAL;
444 self.move_time = time;
445 defer(self, 0.25, trigger_push_findtarget);
450 self.team = ReadByte();
451 self.active = ReadByte();
456 void target_push_remove()
459 strunzone(self.classname);
460 self.classname = string_null;
463 strunzone(self.targetname);
464 self.targetname = string_null;
467 NET_HANDLE(ENT_CLIENT_TARGET_PUSH, bool isnew)
470 self.classname = "push_target";
471 self.cnt = ReadByte();
472 self.targetname = strzone(ReadString());
473 self.origin_x = ReadCoord();
474 self.origin_y = ReadCoord();
475 self.origin_z = ReadCoord();
477 self.angles_x = ReadAngle();
478 self.angles_y = ReadAngle();
479 self.angles_z = ReadAngle();
483 setorigin(self, self.origin);
485 self.drawmask = MASK_NORMAL;
486 self.entremove = target_push_remove;