private Emitter passengerEmitter;
PassengerCoach(Map map) {
super(map);
Material smileyMat = new Material();
smileyMat.setTexture(0, "res/texture/smiley.png");
smileyMat.setTexture(1, "res/texture/frown.png");
passengerEmitter = new Emitter(10, 4000);
passengerEmitter.setMaterial(smileyMat);
passengerEmitter.setVelocity(new Vector3f(0,0.5f,0));
passengerEmitter.setSizes(15, 40);