import processing.opengl.*;


ArrayList particles;

void setup() {
  size(600,600, OPENGL);
  particles = new ArrayList();
  smooth();
}

void draw() {

  particles.add(new Element());

  background(0);


  for (int i = 0; i < particles.size(); i++ ) {
    Element p = (Element) particles.get(i);
    p.direction();
    p.gravity();
    p.renderParticle();
  }


  if (particles.size() > 100) {
    particles.remove(0);
    }
  }