class Enemy extends Sprite {
  AnimImage image;
  
  public Enemy(float x) {
    this.x = x;
    this.y = -8;
    dy = 1.5;
    image = new AnimImage(loadImage("enemy1.gif"),16,16);
  }
  void draw() {
    int frame = 1;
    if (dx<-0.5) frame=0;
    else if (dx>0.5) frame = 2;
    image.draw(x-8,y-8,frame);
  }
  void update() {
    x+=dx;
    y+=dy;
    
    dx = 3*sin(y/25);
    
    for (int i=0; i<level.lasers.size(); i++) {
      Sprite s = level.lasers.get(i);
      if (dist(s.x,s.y,x,y)<8) {
        s.alive = false;
        alive = false;
        level.explosions.add(new Explosion(x,y));
      }
    }
    
    if (y>248) alive = false;
  }
}