void rotatePosX(boolean clockwise) {
		int tx = x;
		int ty = y;
		int tz = z;
		double rad = Math.toRadians(clockwise ? -90 : 90);
		x = tx;
		y = (int) Math.round(ty * Math.cos(rad) - tz * Math.sin(rad));
		z = (int) Math.round(ty * Math.sin(rad) + tz * Math.cos(rad));
	}