public static void init() {
		point_green = loadImage("point_green.png");
		point_blue = loadImage("point_blue.png");
		point_red = loadImage("point_red.png");

		ship_red = loadImage("ship_red.png");
		ship_blue = loadImage("ship_blue.png");
		ship_green = loadImage("ship_green.png");

		ship_engine_main = loadImage("ship_engine_main.png");
		ship_engine_right = loadImage("ship_engine_right.png");
		ship_engine_left = loadImage("ship_engine_left.png");
	}