gistfile1.js

// Set up the event accumulator to fire when all users have been saved.
	var arenaStartEvents = [];
	for (var p in this.players) {
		arenaStartEvents.push(this.players[p].userID);
		this.players[p].on('leaveArena', (function(arena, player) {
			return (function() {
				arena.playerLeftArenaInProgress(player);
			});
		})(this, this.players[p]));
	}

	var arenaStartEmitter = new events.EventEmitter();

	var arenaStartAccumulatorHandler = (function(arena) {
		return function() {
			// Build ladder, start first round
			arena.ladder[0] = _.range(arena.arenaData.players)
			arena.round = 1;

			arena.roundStart();
		}
	})(this);
	var arenaUUID = this.arenaData.UUID;
	async.forEach(arenaStartEvents, function(event) {
		arenaStartEmitter.once(event, function() {
			eventAccumulator(event, arenaStartEvents, "arenaStart" + arenaUUID, arenaStartAccumulatorHandler);
		});
	});