public void move(int direction, int amount){
			for(int i = 0; i<amount; i++){
				if(direction == 0 && !collision(direction))
					x --;
				else if(direction == 1 && !collision(direction))
					x ++;
				else if(direction == 2 && !collision(direction))
					y --;
				else if (direction ==3 && !collision(direction))
					y++;
			}
		}