multivibrator.qc

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#include "multivibrator.qh"
#ifdef SVQC
void multivibrator_send(entity this)
{
    float newstate;
    float cyclestart;

    cyclestart = floor((time + this.phase) / (this.wait + this.respawntime)) * (this.wait + this.respawntime) - this.phase;

    newstate = (time < cyclestart + this.wait);

    if(this.state != newstate)
        SUB_UseTargets(this, this, NULL);
    this.state = newstate;

    if(this.state)
        this.nextthink = cyclestart + this.wait + 0.01;
    else
        this.nextthink = cyclestart + this.wait + this.respawntime + 0.01;
}

void multivibrator_send_think(entity this)
{
    multivibrator_send(this);
}

void multivibrator_toggle(entity this, entity actor, entity trigger)
{
    if(this.nextthink == 0)
    {
        multivibrator_send(this);
    }
    else
    {
        if(this.state)
        {
            SUB_UseTargets(this, actor, trigger);
            this.state = 0;
        }
        this.nextthink = 0;
    }
}

void multivibrator_reset(entity this)
{
    if(!(this.spawnflags & START_ENABLED))
        this.nextthink = 0; // wait for a trigger event
    else
        this.nextthink = max(1, time);
}

/*QUAKED trigger_multivibrator (.5 .5 .5) (-8 -8 -8) (8 8 8) START_ENABLED
"Multivibrator" trigger gate... repeatedly sends trigger events. When triggered, turns on or off.
-------- KEYS --------
target: trigger all entities with this targetname when it goes off
targetname: name that identifies this entity so it can be triggered; when off, it always uses the OFF state
phase: offset of the timing
wait: "on" cycle time (default: 1)
respawntime: "off" cycle time (default: same as wait)
-------- SPAWNFLAGS --------
START_ENABLED: assume it is already turned on (when targeted)
*/
spawnfunc(trigger_multivibrator)
{
    if(!this.wait)
        this.wait = 1;
    if(!this.respawntime)
        this.respawntime = this.wait;

    this.state = 0;
    this.use = multivibrator_toggle;
    setthink(this, multivibrator_send_think);
    this.nextthink = max(1, time);

    if(this.targetname && this.targetname != "")
        multivibrator_reset(this);
}
#endif