@Override
	public void update(GameContainer gc, int delta) {
		if(gc.getInput().isKeyDown(Input.KEY_W) && position.getY() > 0) {
			position.setY(position.getY() - (delta * MOVEMENT_MULTIPLIER));
		}
		if(gc.getInput().isKeyDown(Input.KEY_A) && position.getX() > 0) {
			currentAnimation = birdLeft;
			position.setX(position.getX() - (delta * MOVEMENT_MULTIPLIER));
		}
		if(gc.getInput().isKeyDown(Input.KEY_D) && position.getX() < 740) { //800 - width
			currentAnimation = birdRight;
			position.setX(position.getX() + (delta * MOVEMENT_MULTIPLIER));
		}
		if(gc.getInput().isKeyDown(Input.KEY_S) && position.getY() < 560) { //600 - height
			position.setY(position.getY() + (delta * MOVEMENT_MULTIPLIER)); 
		}
		/* disable gravity
		if(position.getY() < 560) {
			position.setY(position.getY() + (delta * MOVEMENT_MULTIPLIER));  //gravity
		}*/
	}