private static boolean isDifferent(Tile t1, Tile t2, boolean biome) {
		if (biome) {
			if (t1 == null || t2 == null) {
				return false;
			} else {
				if ((t1.tile == t2.tile && !(Tiles.getPrecedence(t1.tile) > Tiles.getPrecedence(t2.tile)) || t1.floor != t2.floor))
					return false;
				else return true;
			}
		} else {
			if (t1 == null || t2 == null) {
				return false;
			} else {
				if (t1.floor >= t2.floor)
					return false;
				else return true;
			}
		}
	}