server.js

/*
*@autor: Rio 3D Studios
*@description:  java script server that works as master server of the Basic Example of WebGL Multiplayer Kit
*/
var express  = require('express');//import express NodeJS framework module
var app      = express();// create an object of the express module
var http     = require('http').Server(app);// create a http web server using the http library
var io       = require('socket.io')(http);// import socketio communication module


app.use("/public/TemplateData",express.static(__dirname + "/public/TemplateData"));
app.use("/public/Build",express.static(__dirname + "/public/Build"));
app.use(express.static(__dirname+'/public'));

var clients			= [];// to storage clients
var clientLookup = {};// clients search engine
var sockets = {};//// to storage sockets


//open a connection with the specific client
io.on('connection', function(socket){

   //print a log in node.js command prompt
  console.log('A user ready for connection!');
  
  //to store current client connection
  var currentUser;
  
  var sended = false;
	
	
	//create a callback fuction to listening EmitPing() method in NetworkMannager.cs unity script
	socket.on('PING', function (_pack)
	{
	  //console.log('_pack# '+_pack);
	  var pack = JSON.parse(_pack);	

	    console.log('message from user# '+socket.id+": "+pack.msg);
        
		 //emit back to NetworkManager in Unity by client.js script
		 socket.emit('PONG', socket.id,pack.msg);
		
	});
	
	//create a callback fuction to listening EmitJoin() method in NetworkMannager.cs unity script
	socket.on('LOGIN', function (_data)
	{
	
	    console.log('[INFO] JOIN received !!! ');
		
		var data = JSON.parse(_data);

         // fills out with the information emitted by the player in the unity
        currentUser = {
			       name:data.name,
				  
                   position:data.position,
				   rotation:'0',
			       id:socket.id,//alternatively we could use socket.id
				   socketID:socket.id//fills out with the id of the socket that was open
				
				   };//new user  in clients list
					
		console.log('[INFO] player '+currentUser.name+': logged!');
		console.log('[INFO] currentUser.position '+currentUser.position);	

		 //add currentUser in clients list
		 clients.push(currentUser);
		 
		 //add client in search engine
		 clientLookup[currentUser.id] = currentUser;
		 
		 sockets[currentUser.id] = socket;//add curent user socket
		 
		 console.log('[INFO] Total players: ' + clients.length);
		 
		 /*********************************************************************************************/		
		
		//send to the client.js script
		socket.emit("LOGIN_SUCCESS",currentUser.id,currentUser.name,currentUser.position);
		
         //spawn all connected clients for currentUser client 
         clients.forEach( function(i) {
		    if(i.id!=currentUser.id)
			{ 
		      //send to the client.js script
		      socket.emit('SPAWN_PLAYER',i.id,i.name,i.position);
			  
		    }//END_IF
	   
	     });//end_forEach
		
		 // spawn currentUser client on clients in broadcast
		socket.broadcast.emit('SPAWN_PLAYER',currentUser.id,currentUser.name,currentUser.position);
		
  
	});//END_SOCKET_ON
	
	
	

	
		
	//create a callback fuction to listening EmitMoveAndRotate() method in NetworkMannager.cs unity script
	socket.on('MOVE_AND_ROTATE', function (_data)
	{
	  var data = JSON.parse(_data);	
	  
	  if(currentUser)
	  {
	
       currentUser.position = data.position;
	   
	   currentUser.rotation = data.rotation;
	  
	   // send current user position and  rotation in broadcast to all clients in game
       socket.broadcast.emit('UPDATE_MOVE_AND_ROTATE', currentUser.id,currentUser.position,currentUser.rotation);
	
      
       }
	});//END_SOCKET_ON
	



    // called when the user desconnect
	socket.on('disconnect', function ()
	{
     
	    if(currentUser)
		{
		 currentUser.isDead = true;
		 
		 //send to the client.js script
		 //updates the currentUser disconnection for all players in game
		 socket.broadcast.emit('USER_DISCONNECTED', currentUser.id);
		
		
		 for (var i = 0; i < clients.length; i++)
		 {
			if (clients[i].name == currentUser.name && clients[i].id == currentUser.id) 
			{

				console.log("User "+clients[i].name+" has disconnected");
				clients.splice(i,1);

			};
		};
		
		}
		
    });//END_SOCKET_ON
		
});//END_IO.ON


http.listen(process.env.PORT ||3000, function(){
	console.log('listening on *:3000');
});
console.log("------- server is running -------");