@Override protected void createParticles (Particles parts, Randoms rando) {
CanvasImage image = graphics().createImage(7, 7);
image.canvas().setFillColor(0xFFFFFFFF);
image.canvas().fillCircle(3, 3, 3);
Emitter emitter = parts.createEmitter(5000, image);
emitter.generator = Generator.constant(100);
emitter.initters.add(Lifespan.constant(5));
emitter.initters.add(Color.constant(0xFF99CCFF));
emitter.initters.add(Transform.layer(emitter.layer));
emitter.initters.add(Velocity.randomSquare(rando, -20, 20, -100, 0));