jumppads.qc File Reference

#include "jumppads.qh"

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Functions
bool	jumppad_push (entity this, entity targ)
vector	trigger_push_calculatevelocity (vector org, entity tgt, float ht, entity pushed_entity)
void	trigger_push_findtarget (entity this)
bool	trigger_push_test (entity this, entity item)
	if (item != NULL) returns true if the item can be reached by using this jumppad, false otherwise if (item == NULL) tests jumppad's trajectory and eventually spawns waypoints for it (return value doesn't matter) More...
void	trigger_push_touch (entity this, entity toucher)

Function Documentation

jumppad_push()

bool jumppad_push	(	entity	this,
		entity	targ
	)

Definition at line 131 of file jumppads.qc.

References _sound, ANIMACTION_JUMP, animdecide_setaction(), ATTEN_NORM, centerprint(), CH_TRIGGER, enemy, entity(), find(), height, IS_BOT_CLIENT, IS_DEAD, IS_PLAYER, IS_REAL_CLIENT, isPushable(), message, movedir, MOVETYPE_BOUNCE, MOVETYPE_BOUNCEMISSILE, MOVETYPE_FLY, MOVETYPE_TOSS, noise, NULL, NUM_JUMPPADSUSED, pushltime, RandomSelection_AddEnt, RandomSelection_chosen_ent, RandomSelection_Init(), set_movetype(), SUB_UseTargets(), target, targetname, time, trigger_push_calculatevelocity(), UNSET_ONGROUND, UpdateCSQCProjectile(), vectoangles(), vector(), and VOL_BASE.

Referenced by trigger_push_findtarget(), and trigger_push_touch().

{
    if (!isPushable(targ))
        return false;

    vector org = targ.origin;

    if(STAT(Q3COMPAT))
    {
        org.z += targ.mins_z;
        org.z += 1; // off by 1!
    }

    if(this.enemy)
    {
        targ.velocity = trigger_push_calculatevelocity(org, this.enemy, this.height, targ);
    }
    else if(this.target && this.target != "")
    {
        entity e;
        RandomSelection_Init();
        for(e = NULL; (e = find(e, targetname, this.target)); )
        {
            if(e.cnt)
                RandomSelection_AddEnt(e, e.cnt, 1);
            else
                RandomSelection_AddEnt(e, 1, 1);
        }
        targ.velocity = trigger_push_calculatevelocity(org, RandomSelection_chosen_ent, this.height, targ);
    }
    else
    {
        targ.velocity = this.movedir;
    }

    UNSET_ONGROUND(targ);

#ifdef CSQC
    if (targ.flags & FL_PROJECTILE)
    {
        targ.angles = vectoangles (targ.velocity);
        switch(targ.move_movetype)
        {
            case MOVETYPE_FLY:
                set_movetype(targ, MOVETYPE_TOSS);
                targ.gravity = 1;
                break;
            case MOVETYPE_BOUNCEMISSILE:
                set_movetype(targ, MOVETYPE_BOUNCE);
                targ.gravity = 1;
                break;
        }
    }
#endif

#ifdef SVQC
    if (IS_PLAYER(targ))
    {
        // reset tracking of oldvelocity for impact damage (sudden velocity changes)
        targ.oldvelocity = targ.velocity;

        // prevent sound spam when a player hits the jumppad more than once
        // or when a dead player gets stuck in the jumppad for some reason
        if(this.pushltime < time && !(IS_DEAD(targ) && targ.velocity == '0 0 0'))
        {
            // flash when activated
            Send_Effect(EFFECT_JUMPPAD, targ.origin, targ.velocity, 1);
            _sound (targ, CH_TRIGGER, this.noise, VOL_BASE, ATTEN_NORM);
            this.pushltime = time + 0.2;
        }
        if(IS_REAL_CLIENT(targ) || IS_BOT_CLIENT(targ))
        {
            bool found = false;
            for(int i = 0; i < targ.jumppadcount && i < NUM_JUMPPADSUSED; ++i)
                if(targ.(jumppadsused[i]) == this)
                    found = true;
            if(!found)
            {
                targ.(jumppadsused[targ.jumppadcount % NUM_JUMPPADSUSED]) = this;
                targ.jumppadcount = targ.jumppadcount + 1;
            }

            if(IS_REAL_CLIENT(targ))
            {
                if(this.message)
                    centerprint(targ, this.message);
            }
            else
            {
                targ.lastteleporttime = time;
                targ.lastteleport_origin = targ.origin;
            }

            if (!IS_DEAD(targ))
                animdecide_setaction(targ, ANIMACTION_JUMP, true);
        }
        else
            targ.jumppadcount = 1;

        // reset tracking of who pushed you into a hazard (for kill credit)
        targ.pushltime = 0;
        targ.istypefrag = 0;
    }

    if(this.enemy.target)
        SUB_UseTargets(this.enemy, targ, this);

    if (targ.flags & FL_PROJECTILE)
    {
        targ.angles = vectoangles (targ.velocity);
        targ.com_phys_gravity_factor = 1;
        switch(targ.move_movetype)
        {
            case MOVETYPE_FLY:
                set_movetype(targ, MOVETYPE_TOSS);
                targ.gravity = 1;
                break;
            case MOVETYPE_BOUNCEMISSILE:
                set_movetype(targ, MOVETYPE_BOUNCE);
                targ.gravity = 1;
                break;
        }
        UpdateCSQCProjectile(targ);
    }
#endif

    return true;
}

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trigger_push_calculatevelocity()

vector trigger_push_calculatevelocity	(	vector	org,
		entity	tgt,
		float	ht,
		entity	pushed_entity
	)

Definition at line 31 of file jumppads.qc.

References fabs(), normalize(), NULL, solve_quadratic(), sqrt(), vector(), and vlen().

Referenced by jumppad_push(), trigger_push_test(), trigger_push_touch(), and W_Nexball_Attack2().

{
    float grav, sdist, zdist, vs, vz, jumpheight;
    vector sdir, torg;

    torg = tgt.origin + (tgt.mins + tgt.maxs) * 0.5;

    grav = PHYS_GRAVITY(NULL);
    if(pushed_entity && pushed_entity.gravity)
        grav *= pushed_entity.gravity;

    zdist = torg.z - org.z;
    sdist = vlen(torg - org - zdist * '0 0 1');
    sdir = normalize(torg - org - zdist * '0 0 1');

    // how high do we need to push the player?
    jumpheight = fabs(ht);
    if(zdist > 0)
        jumpheight = jumpheight + zdist;

    /*
        STOP.

        You will not understand the following equations anyway...
        But here is what I did to get them.

        I used the functions

          s(t) = t * vs
          z(t) = t * vz - 1/2 grav t^2

        and solved for:

          s(ti) = sdist
          z(ti) = zdist
          max(z, ti) = jumpheight

        From these three equations, you will find the three parameters vs, vz
        and ti.
     */

    // push him so high...
    vz = sqrt(fabs(2 * grav * jumpheight)); // NOTE: sqrt(positive)!

    // we start with downwards velocity only if it's a downjump and the jump apex should be outside the jump!
    if(ht < 0)
        if(zdist < 0)
            vz = -vz;

    vector solution;
    solution = solve_quadratic(0.5 * grav, -vz, zdist); // equation "z(ti) = zdist"
    // ALWAYS solvable because jumpheight >= zdist
    if(!solution.z)
        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)
    if(zdist == 0)
        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)

    float flighttime;
    if(zdist < 0)
    {
        // down-jump
        if(ht < 0)
        {
            // almost straight line type
            // jump apex is before the jump
            // we must take the larger one
            flighttime = solution.y;
        }
        else
        {
            // regular jump
            // jump apex is during the jump
            // we must take the larger one too
            flighttime = solution.y;
        }
    }
    else
    {
        // up-jump
        if(ht < 0)
        {
            // almost straight line type
            // jump apex is after the jump
            // we must take the smaller one
            flighttime = solution.x;
        }
        else
        {
            // regular jump
            // jump apex is during the jump
            // we must take the larger one
            flighttime = solution.y;
        }
    }
    vs = sdist / flighttime;

    // finally calculate the velocity
    return sdir * vs + '0 0 1' * vz;
}

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trigger_push_findtarget()

void trigger_push_findtarget

(

entity

this

)

Definition at line 558 of file jumppads.qc.

References active, ACTIVE_ACTIVE, angles, BITSET_ASSIGN, cnt, drawmask, EF_NODEPTHTEST, effects, entity(), g_jumppads, height, IL_PUSH(), InitializeEntity(), jumppad_push(), mangle, MASK_NORMAL, move_time, movedir, NET_HANDLE, noise, NULL, origin, precache_sound(), ReadString, setorigin(), SF_TRIGGER_INIT, solid, SOLID_TRIGGER, spawnflags, spawnfunc(), speed, strfree, strzone(), target, targetname, team, time, to, trigger_push_findtarget(), trigger_push_test(), trigger_push_touch(), use, WriteByte(), WriteCoord(), and WriteString().

Referenced by trigger_push_findtarget().

{
    trigger_push_test(this, NULL);
}

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trigger_push_test()

bool trigger_push_test	(	entity	this,
		entity	item
	)

if (item != NULL) returns true if the item can be reached by using this jumppad, false otherwise if (item == NULL) tests jumppad's trajectory and eventually spawns waypoints for it (return value doesn't matter)

Definition at line 387 of file jumppads.qc.

References absmax, absmin, boxesoverlap(), DPCONTENTS_BODY, DPCONTENTS_BOTCLIP, DPCONTENTS_PLAYERCLIP, DPCONTENTS_SOLID, enemy, entity(), eZ, fabs(), find(), height, if(), LABEL, min(), movedir, MOVETYPE_NONE, normalize(), NULL, objerror(), setorigin(), spawn(), target, targetname, team, trace_endpos, trace_ent, trigger_push_calculatevelocity(), vdist, vec2, vector(), vlen(), and waypoint_spawnforteleporter().

Referenced by navigation_findnearestwaypoint_withdist_except(), and trigger_push_findtarget().

{
#ifdef SVQC
    vector org = trigger_push_get_start_point(this);
#endif

    if (this.target)
    {
        int n = 0;
#ifdef SVQC
        vector vel = '0 0 0';
#endif
        for(entity t = NULL; (t = find(t, targetname, this.target)); )
        {
            ++n;
#ifdef SVQC
            if(t.move_movetype != MOVETYPE_NONE)
                continue;

            // bots can't tell teamed jumppads from normal ones
            if (this.team)
                continue;

            entity e = spawn();
            setsize(e, PL_MIN_CONST, PL_MAX_CONST);
            e.dphitcontentsmask = DPCONTENTS_SOLID | DPCONTENTS_BODY | DPCONTENTS_PLAYERCLIP | DPCONTENTS_BOTCLIP;
            e.velocity = trigger_push_calculatevelocity(org, t, this.height, e);

            vel = e.velocity;
            vector best_target = '0 0 0';
            vector best_org = '0 0 0';
            vector best_vel = '0 0 0';
            bool valid_best_target = false;
            if (item)
            {
                if (!trigger_push_testorigin_for_item(e, item, org))
                {
                    delete(e);
                    return false;
                }
            }
            else
            {
                if (trigger_push_testorigin(e, t, this, org))
                {
                    best_target = trace_endpos;
                    best_org = org;
                    best_vel = e.velocity;
                    valid_best_target = true;
                }
            }

            vector new_org;
            vector dist = t.origin - org;
            if (dist.x || dist.y) // if not perfectly vertical
            {
                // test trajectory with different starting points, sometimes the trajectory
                // starting from the jumppad origin can't reach the real destination
                // and destination waypoint ends up near the jumppad itself
                vector flatdir = normalize(dist - eZ * dist.z);
                vector ofs = flatdir * 0.5 * min(fabs(this.absmax.x - this.absmin.x), fabs(this.absmax.y - this.absmin.y));
                new_org = org + ofs;

                LABEL(new_test)
                e.velocity = trigger_push_calculatevelocity(new_org, t, this.height, e);
                if (item)
                {
                    if (!trigger_push_testorigin_for_item(e, item, new_org))
                    {
                        delete(e);
                        return false;
                    }
                }
                else
                {
                    vel = e.velocity;
                    if (vdist(vec2(e.velocity), <, autocvar_sv_maxspeed))
                        e.velocity = autocvar_sv_maxspeed * flatdir;
                    if (trigger_push_testorigin(e, t, this, new_org) && (!valid_best_target || trace_endpos.z > best_target.z + 50))
                    {
                        best_target = trace_endpos;
                        best_org = new_org;
                        best_vel = vel;
                        valid_best_target = true;
                    }
                }
                if (ofs && new_org != org - ofs)
                {
                    new_org = org - ofs;
                    goto new_test;
                }
            }

            if (item)
            {
                delete(e);
                return true;
            }

            if (valid_best_target)
            {
                if (!(boxesoverlap(this.absmin, this.absmax + eZ * 50, best_target + PL_MIN_CONST, best_target + PL_MAX_CONST)))
                {
                    float velxy = vlen(vec2(best_vel));
                    float cost = vlen(vec2(t.origin - best_org)) / velxy;
                    if(velxy < autocvar_sv_maxspeed)
                        velxy = autocvar_sv_maxspeed;
                    cost += vlen(vec2(best_target - t.origin)) / velxy;
                    waypoint_spawnforteleporter(this, best_target, cost, e);
                }
            }
            delete(e);
#endif
        }

        if(item)
            return false;

        if(!n)
        {
            // no dest!
#ifdef SVQC
            objerror (this, "Jumppad with nonexistant target");
#endif
            return false;
        }
        else if(n == 1)
        {
            // exactly one dest - bots love that
            if (!this.team)
                this.enemy = find(NULL, targetname, this.target);
            else // bots can't tell teamed jumppads from normal ones
                this.enemy = NULL;
        }
        else
        {
            // have to use random selection every single time
            this.enemy = NULL;
        }

    }
#ifdef SVQC
    else
    {
        if (!this.team)
        {
            entity e = spawn();
            setsize(e, PL_MIN_CONST, PL_MAX_CONST);
            e.dphitcontentsmask = DPCONTENTS_SOLID | DPCONTENTS_BODY | DPCONTENTS_PLAYERCLIP | DPCONTENTS_BOTCLIP;
            setorigin(e, org);
            e.velocity = this.movedir;
            tracetoss(e, e);
            if (item)
            {
                bool r = (trace_ent == item);
                delete(e);
                return r;
            }
            if (!(boxesoverlap(this.absmin, this.absmax + eZ * 50, trace_endpos + PL_MIN_CONST, trace_endpos + PL_MAX_CONST)))
                waypoint_spawnforteleporter(this, trace_endpos, vlen(trace_endpos - org) / vlen(e.velocity), e);
            delete(e);
        }
        else if (item)
            return false;
    }

    defer(this, 0.1, trigger_push_updatelink);
#endif
    return true;
}

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trigger_push_touch()

void trigger_push_touch	(	entity	this,
		entity	toucher
	)

Definition at line 260 of file jumppads.qc.

References absmax, absmin, active, ACTIVE_NOT, DIFF_TEAM, DPCONTENTS_BODY, DPCONTENTS_BOTCLIP, DPCONTENTS_PLAYERCLIP, DPCONTENTS_SOLID, enemy, entity(), EXACTTRIGGER_TOUCH, eZ, func_null(), height, INVERT_TEAMS, jumppad_push(), movedir, nextthink, NULL, PUSH_ONCE, setorigin(), setthink, spawn(), spawnflags, sqrt(), stepheightvec, target, team, time, trace_endpos, trace_ent, trace_startsolid, trigger_push_calculatevelocity(), trigger_push_get_push_time(), v, vdist, vec2, and vector().

Referenced by trigger_push_findtarget().

{
    if (this.active == ACTIVE_NOT)
        return;

    if(this.team)
        if(((this.spawnflags & INVERT_TEAMS) == 0) == (DIFF_TEAM(this, toucher)))
            return;

    EXACTTRIGGER_TOUCH(this, toucher);

    noref bool success = jumppad_push(this, toucher);

#ifdef SVQC
    if (success && (this.spawnflags & PUSH_ONCE))
    {
        settouch(this, func_null);
        setthink(this, SUB_Remove);
        this.nextthink = time;
    }
#endif
}

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