public Diff getDifForDirection()
	{
		Diff diff = null;

		switch (this)
		{
			case UP:
				diff = createDiff(0, -1);
			break;
			case DOWN:
				diff = createDiff(0, 1);
			break;
			case RIGHT:
				diff = createDiff(1, 0);
			break;
			case LEFT:
				diff = createDiff(-1, 0);
			break;
		}

		return diff;

	}