Zog army

ArrayList<Alien> invasion = new ArrayList<Alien>();

​

void setup(){

  fullScreen();

  invasion.add(new Alien());

}

​

void draw(){

  background(50, 100, 200);

  if(mousePressed){  //this is short for mousePressed == true

    invasion.add(new Alien());

  }

  //foreach alien in my list, do what simon does

  for(Alien simon : invasion){

    simon.drawAlien();

    simon.moveAlien();

  }

}