Snake Slot Iteration for GUIs

	private int getSnakeSlot(int slot) {
		final int horizontalLength = 2;
		final int verticalLength = 5;
		
		final int patternLength = 2 * (horizontalLength + verticalLength);
		final int patternNo = slot / (patternLength + 1); // 10 -> 1, 8/10 -> 1, 12/10 -> 2
		int slotNoInPattern = slot % (patternLength + 1); // 8/10 -> 8, 12/10 -> 2

		final boolean isInReversedPattern = slotNoInPattern > patternLength / 2;

		int roadTakenHorizontal, roadTakenVertical;
		if (isInReversedPattern) {
			slotNoInPattern -= patternLength / 2; // 6 -> 1

			roadTakenHorizontal = Math.min(horizontalLength, slotNoInPattern) + horizontalLength;
			roadTakenVertical = verticalLength - Math.max(0, slotNoInPattern - horizontalLength);
		} else {
			roadTakenHorizontal = Math.min(horizontalLength, slotNoInPattern);
			roadTakenVertical = Math.max(0, slotNoInPattern - horizontalLength);
		}

		return roadTakenHorizontal + patternNo * horizontalLength * 2 + roadTakenVertical * 9;
	}

output