index.js

// Setup basic express server
var express = require('express');
var app = express();
var fs = require('fs');
var server = require('http').createServer(app);
var io = require('socket.io')(server);
var port = process.env.PORT || 3000;
var loopLimit = 0;

server.listen(port, function () {
  console.log('Server listening at port %d', port);
  fs.writeFile(__dirname + '/start.log', 'started'); 
});

// Routing
app.use(express.static(__dirname));

// Entire gameCollection Object holds all games and info

var gameCollection =  new function() {

  this.totalGameCount = 0,
  this.gameList = []

};

function buildGame(socket) {


 var gameObject = {};
 gameObject.id = (Math.random()+1).toString(36).slice(2, 18);
 gameObject.playerOne = socket.username;
 gameObject.playerTwo = null;
 gameCollection.totalGameCount ++;
 gameCollection.gameList.push({gameObject});

 console.log("Game Created by "+ socket.username + " w/ " + gameObject.id);
 io.emit('gameCreated', {
  username: socket.username,
  gameId: gameObject.id
});


}

function killGame(socket) {

  var notInGame = true;
  for(var i = 0; i < gameCollection.totalGameCount; i++){

    var gameId = gameCollection.gameList[i]['gameObject']['id']
    var plyr1Tmp = gameCollection.gameList[i]['gameObject']['playerOne'];
    var plyr2Tmp = gameCollection.gameList[i]['gameObject']['playerTwo'];
    
    if (plyr1Tmp == socket.username){
      --gameCollection.totalGameCount; 
      console.log("Destroy Game "+ gameId + "!");
      gameCollection.gameList.splice(i, 1);
      console.log(gameCollection.gameList);
      socket.emit('leftGame', { gameId: gameId });
      io.emit('gameDestroyed', {gameId: gameId, gameOwner: socket.username });
      notInGame = false;
    } 
    else if (plyr2Tmp == socket.username) {
      gameCollection.gameList[i]['gameObject']['playerTwo'] = null;
      console.log(socket.username + " has left " + gameId);
      socket.emit('leftGame', { gameId: gameId });
      console.log(gameCollection.gameList[i]['gameObject']);
      notInGame = false;

    } 

  }

  if (notInGame == true){
    socket.emit('notInGame');
  }


}

function gameSeeker (socket) {
  ++loopLimit;
  if (( gameCollection.totalGameCount == 0) || (loopLimit >= 20)) {

    buildGame(socket);
    loopLimit = 0;

  } else {
    var rndPick = Math.floor(Math.random() * gameCollection.totalGameCount);
    if (gameCollection.gameList[rndPick]['gameObject']['playerTwo'] == null)
    {
      gameCollection.gameList[rndPick]['gameObject']['playerTwo'] = socket.username;
      socket.emit('joinSuccess', {
        gameId: gameCollection.gameList[rndPick]['gameObject']['id'] });

      console.log( socket.username + " has been added to: " + gameCollection.gameList[rndPick]['gameObject']['id']);

    } else {

      gameSeeker(socket);
    }
  }
}


// Chatroom

var numUsers = 0;

io.on('connection', function (socket) {
  var addedUser = false;

  // when the client emits 'new message', this listens and executes
  socket.on('new message', function (data) {
    // we tell the client to execute 'new message'
    socket.broadcast.emit('new message', {
      username: socket.username,
      message: data
    });
  });

  // when the client emits 'add user', this listens and executes
  socket.on('add user', function (username) {
    if (addedUser) return;

    // we store the username in the socket session for this client
    socket.username = username;
    ++numUsers;
    addedUser = true;
    socket.emit('login', {
      numUsers: numUsers
    });
    // echo globally (all clients) that a person has connected
    socket.broadcast.emit('user joined', {
      username: socket.username,
      numUsers: numUsers
    });
  });

  // when the client emits 'typing', we broadcast it to others
  socket.on('typing', function () {
    socket.broadcast.emit('typing', {
      username: socket.username
    });
  });

  // when the client emits 'stop typing', we broadcast it to others
  socket.on('stop typing', function () {
    socket.broadcast.emit('stop typing', {
      username: socket.username
    });
  });

  // when the user disconnects.. perform this
  socket.on('disconnect', function () {
    if (addedUser) {
      --numUsers;
      killGame(socket);

      // echo globally that this client has left
      socket.broadcast.emit('user left', {
        username: socket.username,
        numUsers: numUsers
      });
    }
  });


  socket.on('joinGame', function (){
    console.log(socket.username + " wants to join a game");

    var alreadyInGame = false;

    for(var i = 0; i < gameCollection.totalGameCount; i++){
      var plyr1Tmp = gameCollection.gameList[i]['gameObject']['playerOne'];
      var plyr2Tmp = gameCollection.gameList[i]['gameObject']['playerTwo'];
      if (plyr1Tmp == socket.username || plyr2Tmp == socket.username){
        alreadyInGame = true;
        console.log(socket.username + " already has a Game!");

        socket.emit('alreadyJoined', {
          gameId: gameCollection.gameList[i]['gameObject']['id']
        });

      }

    }
    if (alreadyInGame == false){


      gameSeeker(socket);
      
    }

  });


  socket.on('leaveGame', function() {


    if (gameCollection.totalGameCount == 0){
     socket.emit('notInGame');
     
   }

   else {
    killGame(socket);
  }

});

});