private boolean checkRoyalStraight(int player) {
		TreeSet<Integer> set = new TreeSet<Integer>();
		for (int card : players[player].cards) {
			set.add(card % 13);
		}
		
		int[] hand = new int[5];
		int i = 0;
		for (int card : set) {
			hand[i++] = card;
		}
		
		// Royal Straight: Ace, King, Queen, Jack, 10
		if (hand[0] == 0 && hand[4] == 12 && hand[3] == 11 && hand[2] == 10 && hand[1] == 9)
			return true;
		
		return false;
	}