game01 - app.js

var express = require('express');
var app = express();
var http = require('http').createServer(app);
var io = require('socket.io')(http);

var users = [];

app.use("/", express.static(__dirname+"/client"));

io.on('connection', function(socket){
    console.log('a user connected');

    socket.on("adduser", function(data){
        var user_id = users.length+1;
        socket.fakeid = user_id;
        //socket.users
        users[user_id] = {
            id: user_id,
            soc: socket.id,
            name: data,
            x: 0,
            y: 0
        }
        console.log(data + " Join game");
        console.log(users);
        socket.emit("update_users", users);
    });

    socket.on("start_move", function(data){
        console.log(users);
        if(data == "right"){
            users[socket.fakeid].x += 10;
        }
        if(data == "down"){
            users[socket.fakeid].y += 10;
        }
        if(data == "left"){
            users[socket.fakeid].x -= 10;
        }
        if(data == "up"){
            users[socket.fakeid].y -= 10;
        }
        socket.emit("update_users", users);
    });

    socket.on('disconnect', function(){
        console.log('a user disconnected');
      });
  });

http.listen(80, function(){
  console.log('listening on *:80');
});