/**
* Create a new emitter configurable externally
*
* @param name The name of emitter
*/
public ConfigurableEmitter(String name) {
this.name = name;
leftToEmit = (int) emitCount.random();
timeout = (int) (length.random());
colors.add(new ColorRecord(0, Color.white));
colors.add(new ColorRecord(1, Color.red));
ArrayList<Vector2f> curve = new ArrayList<>();
curve.add(new Vector2f(0.0f, 0.0f));
curve.add(new Vector2f(1.0f, 255.0f));
alpha = new LinearInterpolator(curve, 0, 255);
curve = new ArrayList<>();
curve.add(new Vector2f(0.0f, 0.0f));
curve.add(new Vector2f(1.0f, 255.0f));
size = new LinearInterpolator(curve, 0, 255);
curve = new ArrayList<>();
curve.add(new Vector2f(0.0f, 0.0f));
curve.add(new Vector2f(1.0f, 1.0f));
velocity = new LinearInterpolator(curve, 0, 1);
curve = new ArrayList<>();
curve.add(new Vector2f(0.0f, 0.0f));
curve.add(new Vector2f(1.0f, 1.0f));
scaleY = new LinearInterpolator(curve, 0, 1);
}
/** Cause the emitter to replay it's circle */
public void replay() {
reset();
nextSpawn = 0;
leftToEmit = (int) emitCount.random();
timeout = (int) (length.random());
}
/**
* @see
* org.newdawn.slick.particles.ParticleEmitter#update(org.newdawn.slick.particles.ParticleSystem,
* int)
*/
@Override
public void update(ParticleSystem system, int delta) {
this.engine = system;
if (!adjust) {
adjustx = 0;
adjusty = 0;
} else adjust = false;
if (updateImage) {
updateImage = false;
try {
image = new Image(relativePath + imageName);
} catch (SlickException e) {
image = null;
Log.error(e);
}
}
if (((wrapUp)
|| ((length.isEnabled()) && (timeout < 0))
|| ((emitCount.isEnabled() && (leftToEmit <= 0))))
&& (particleCount == 0)) {
completed = true;
}
particleCount = 0;
if (wrapUp) return;
if (length.isEnabled()) {
if (timeout < 0) return;
timeout -= delta;
}
if (emitCount.isEnabled() && leftToEmit <= 0) return;
nextSpawn -= delta;
if (nextSpawn < 0) {
nextSpawn = (int) spawnInterval.random();
int count = (int) spawnCount.random();
for (int i = 0; i < count; i++) {
Particle p = system.getNewParticle(this, initialLife.random());
p.setSize(initialSize.random());
p.setPosition(x + xOffset.random(), y + yOffset.random());
p.setVelocity(0, 0, 0);
float dist = initialDistance.random();
float power = speed.random();
if ((dist != 0) || (power != 0)) {
float s = spread.getValue(0);
float ang = (s + angularOffset.getValue(0) - (spread.getValue() / 2)) - 90;
float xa = (float) FastTrig.cos(Math.toRadians(ang)) * dist;
float ya = (float) FastTrig.sin(Math.toRadians(ang)) * dist;
p.adjustPosition(xa, ya);
float xv = (float) FastTrig.cos(Math.toRadians(ang));
float yv = (float) FastTrig.sin(Math.toRadians(ang));
p.setVelocity(xv, yv, power * 0.001f);
}
if (image != null) p.setImage(image);
ColorRecord start = colors.get(0);
p.setColor(start.col.r, start.col.g, start.col.b, startAlpha.getValue(0) / 255.0f);
p.setUsePoint(usePoints);
p.setOriented(useOriented);
if (emitCount.isEnabled()) {
leftToEmit--;
if (leftToEmit <= 0) break;
}
}
}
}