Flint Particle System Forum - Revive a particle where it died

Revive a particle where it died

fred — Sun, 15 Jan 2012 05:50:53 +0000

Hello, I am trying to revive the same particle at the same position where it died using TwoWay.sine for the age... so far, the particle gets a new random x and y. Thanks for your help:
fred

var myApple:Apple = new Apple();
var myMickey:Mickey = new Mickey();
var myMarlboro:Marlboro = new Marlboro();
var myNike:Nike = new Nike();

var myArray:Array = [myApple, myMickey, myMarlboro, myNike ];

renderer = new DisplayObjectRenderer();
addChild(renderer);
emitter = new Emitter2D();
renderer.addEmitter(emitter);

emitter.addInitializer( new Position( new RectangleZone( 0, 0, 1024, 768)));
emitter.addInitializer( new Lifetime(10, 20));
emitter.addAction( new Move());
emitter.addAction( new Age(TwoWay.sine));
emitter.addAction( new Fade());

var myParticles:Vector. = Particle2DUtils.createParticles2DFromDisplayObjects( myArray );
emitter.addEventListener( ParticleEvent.PARTICLE_DEAD, revive4Particles );

emitter.addParticles( myParticles , true);
emitter.start();

private function revive4Particles( event:ParticleEvent ):void
{
event.particle.revive();
event.currentTarget.addParticle(Particle2D(event.particle), true);
}

Revive a particle where it died

Richard — Sat, 21 Jan 2012 11:13:16 +0000

The second parameter in the addParticle method indicates whether the emitter's initializers should be applied to the particle being added. By setting it to true you are applying the emitter's initializers, particularly the Position initializer, to the particle which will alter its position. Try setting it to false.

Revive a particle where it died

fred — Sun, 22 Jan 2012 01:55:39 +0000

Hey Richard,
Thanks for your response. I understand that if set to true, I am applying the emitter's initializers to the particle.
I could set it to false but I need other addInitializers like Lifetime and also actions like Move, Age and Fade.
Any way to select what to apply?
Should I recreate a new emitter, pass the particule and kill the old one?
Thx again.
Fred

Revive a particle where it died

fred — Sun, 22 Jan 2012 02:15:05 +0000

SOLVED :)
Removing the position Initializer did the trick.
thx

var myApple:Apple = new Apple();
var myMickey:Mickey = new Mickey();
var myMarlboro:Marlboro = new Marlboro();
var myNike:Nike = new Nike();

var myPosition:Position;

var myArray:Array = [myApple, myMickey, myMarlboro, myNike ];

renderer = new DisplayObjectRenderer();
addChild(renderer);
emitter = new Emitter2D();
renderer.addEmitter(emitter);

myPosition = new Position(new RectangleZone( 0, 0, 1024, 768));
emitter.addInitializer( myPosition );

emitter.addInitializer( new Lifetime(10, 20));
emitter.addAction( new Move());
emitter.addAction( new Age(TwoWay.sine));
emitter.addAction( new Fade());

var myParticles:Vector. = Particle2DUtils.createParticles2DFromDisplayObjects( myArray );
emitter.addEventListener( ParticleEvent.PARTICLE_DEAD, revive4Particles );

emitter.addParticles( myParticles , true);
emitter.start();

private function revive4Particles( event:ParticleEvent ):void
{
event.particle.revive();

emitter.removeInitializer( myPosition );

event.currentTarget.addParticle(Particle2D(event.particle), true);
}