Simple Particle System
/**
* Simple Particle System
* by Daniel Shiffman.
*
* Particles are generated each cycle through draw(),
* fall with gravity, and fade out over time.
* A ParticleSystem object manages a variable size (ArrayList)
* list of particles.
*/
ParticleSystem* ps;
void setup() {
size(640, 360);
ps = new ParticleSystem(PVector(width/2, 50));
}
void draw() {
background(0);
ps->addParticle();
ps->run();
}