public static void loadWorld(int ID) {
		if (ID < 0 || ID > 4) {
			if (ChristmasCrashers.isDebugModeEnabled())
				System.err.println("Failed to load world " + ID + " - invalid world ID (must be between 0 and 4, inclusive).");
			return;
		}
		if (worlds[ID] != null) {
			if (ChristmasCrashers.isDebugModeEnabled())
				System.out.println("[Warning] LoadWorldsTask is overwriting world " + ID + ".");
		} else {
			worlds[ID] = new World(ID);
		}
		World[] worldsToLoad = {worlds[ID]};
		new Thread(new LoadWorldsTask(worldsToLoad)).start();
	}