public void turnRight() {
		if(this.direction > 3)
			this.direction = 0;
		//direction = (direction + 1)%4;
	}

	/**
	 * 	public Ghost copy() {
	 * Creates a new ghost object that is identical to this Ghost
	 * i.e. same position, color and direction.
	 * @return a copy of this ghost
	 */
	public Ghost copy(){
		Ghost newGhost = new Ghost();
		newGhost.x = this.x;
		newGhost.y = this.y;
		newGhost.color = this.color;
		newGhost.direction = this.direction;
		return newGhost;
	}