public static String getResourceName(int res)
	{
		switch (res)
		{
		case 1: return "Wheat";
		case 2: return "Rice";

		case 10: return "Fish";
		case 11: return "Whale";

		case 20: return "Copper";
		case 21: return "Iron";
		case 22: return "Coal";

		case 30: return "Redwood";

		case 40: return "Spring";

		default: 
			//System.err.println("Invalid resource " + res);
			return null;
		}
	}