EndG-2048-multiplayer/assets/js/remote_storage_manager.js

function RemoteStorageManager() {
  this.storage = new WebSocket("ws://localhost/");
  openListeners = [];
  dataListeners = [];
  
  this.bestScore = 0;
  
  this.storage.onopen = function(){
	  this.connected = true;
	  openListeners.forEach(listener => listener());
  }
  
  this.storage.onmessage = function(e){
	  let data = JSON.parse(e.data);
	  let list = dataListeners[data.game];
	  if(list !== undefined) list.forEach(listener => listener(data));
	  console.log(data);
	  
	  if(data.action === "bestScore"){
		  this.bestScore = data.value;
	  }
  }
  
  this.openListeners = openListeners;
  this.dataListeners = dataListeners;
}

RemoteStorageManager.prototype.onConnected = function(func){
	if(this.connected){
		func();
		return;
	}
	this.openListeners.push(func);
}

RemoteStorageManager.prototype.onData = function(func, game){
	let listeners = this.dataListeners[game];
	if(listeners == undefined){
		listeners = [];
		this.dataListeners[game] = listeners;
	}
	listeners.push(func);
}

RemoteStorageManager.prototype.sendAction = function(action, value){
	this.storage.send(JSON.stringify(value === undefined ? {action:action} : {action:action,value:value}));
}

RemoteStorageManager.prototype.getBestScore = function(){
	return this.bestScore;
}