public enum Rotation {
        /**
         * No rotation
         */
        NONE,
        /**
         * Rotated clockwise
         */
        CLOCKWISE,
        /**
         * Flipped upside-down
         */
        FLIPPED,
        /**
         * Rotated counter-clockwise
         */
        COUNTER_CLOCKWISE;

        private static Rotation [] rotations = new Rotation [4];

        static {
            rotations = values();
        }

        /**
         * Rotate clockwise one value, as if the frame was right-clicked by a player.
         *
         * @return The new rotation
         */
        public Rotation rotateClockwise() {
            return rotations[this.ordinal() + 1 % 4];
        }
    }