KhaParticle

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Simple particle system for kha

KhaParticle 최신버젼 다운로드

최종 버전 다운로드 (.zip)

// repository documentation

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KhaParticle
===========
Author: Sidar Talei

**Simple particle system for kha**

How to use:
-
For now simply copy the files to your Source folder

var img:Image = Loader.the.getImage("particle");

p = new ParticleSystem(1000, img);
	var e:RadialEmitter = new RadialEmitter();
	
	e.rate = 100; 			//particles per second
	e.speed = 0; 			//particle velocity
	e.duration = 1;			//Duration of emission
	e.loop = true;			//If true emission continues after duration
	e.amountPerRate = 1;	//Amount of particles per rate
	e.maxLife = 2;			//Maximum life of a particles in seconds
	e.lifeVariation = 1;	//[0-1]Random life between 0 and maxlife
	e.edgeSpawn = true; 	//Spawns at the edge of the emitter
							//property of RadialEmitter
	e.maxRotationVel = 10;	//Rotation speed.

p.setEmitter(e);
	p.start();				//Start processing particles.

Adding burst:
-
	var b:BurstProp = new BurstProp();
	b.amount = 100; //Amount to emit 
	b.time = .5;	//Every half a second
	e.addBurst(b);	//Add to the emitter

Adding modifiers:
-

//Add color change over life time
	var c:ColorModifier = new ColorModifier();
	//Color and position -> [0-1]
	c.pushColor(0xFFFFFF00, 0);
	c.pushColor(0xFFFF00FF, 1);
	p.addModifier(c);

//Add Fader over life time
	p.addModifier(new FadeModifier(FadeType.FADE_OUT)); //fades out

//Add gravity 
	p.addModifier(new GravityModfier(0,250)); // adds 250 to y over time

//Scale Up over life time. min,max,Multiplier 1;
	p.addModifier(new ScaleModifier(ScaleType.SCALE_DOWN, 0, 1, 1));

- Modifiers can be used with multiple ParticleSystem objects

Updating & Rendering
-
ParticleSystems need to be updated:

function update() : Void
	{
		p.update();
	}

function render(painter:Painter) : Void
	{	
		p.render(painter);
	}

Notes
-

- If you want to change the position of the emitter simply change the x and y value on the particle system object. This will automatically update the position of the emitter as well.
- ScaleModifier can make use of a Spline curve (kha.scene.Spline) but currently it's pretty heavy. When using lots of particles avoid using a spline. Eventually most basic modifiers will have the option to include a curve over life time.

KhaParticle

KhaParticle 최신버젼 다운로드

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