Re-written in coffee-script

README.md

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+Mouse Tracker
+A nodejs socket mouse tracking application
+
+Installation
+
+Make sure you have the latest node and npm installed. To run:
+    node app.js 
+
+You can install any missing dependencies with:
+    npm install -d
+
+Modify line 25 in views/layout.jade to point to the correct IP if you're testing with multiple computers:
+    var socket = io.connect('http://10.0.1.11:3000');

app.coffee

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+express = require 'express'
+io = require 'socket.io'
+app = module.exports = express.createServer();
+
+io = io.listen app
+
+## Configuration
+io.set 'log level', 1 # Turn off annoying poll notice
+
+app.configure () ->
+  app.set 'views', __dirname + '/views'
+  app.set 'view engine', 'jade'
+  app.use express.bodyParser()
+  app.use express.methodOverride()
+  app.use app.router
+  app.use express.static(__dirname + '/public')
+
+app.configure 'development', () ->
+  app.use express.errorHandler({ dumpExceptions: true, showStack: true })
+
+app.configure 'production', () ->
+  app.use express.errorHandler() 
+
+app.get '/', (req, res) ->
+  res.render 'index', { title: 'Node.JS Sockets'}
+
+app.listen 3000
+
+##Player information 
+m_players = [];
+i = 0 # Used for how many people are connected
+
+io.sockets.on 'connection', (socket) ->
+  console.log "New connection: #{socket}"
+
+  socket.on 'client_connected', (data) ->
+    data.id = socket.id
+    m_players[i] = data
+    i++
+    io.sockets.emit "send_data", m_players 
+
+   socket.on 'update_coords', (pos) ->
+
+     for x in [0..m_players.length]
+       if m_players[x].id == socket.id
+         m_players[x].x = pos.x;
+         m_players[x].y = pos.y;
+
+         console.log "Client: #{socket.id}"
+         console.log "X: #{pos.x},  Y: #{pos.y}"
+         break
+
+     io.sockets.emit("send_data", m_players);
+
+   socket.on 'disconnect', () ->
+     j = 0
+     n = 0
+     tmp = []
+
+     while n < m_players.length
+       if m_players[j].id == socket.id
+     	   n++
+     	   break
+
+     	 if n < m_players.length
+     	   tmp[j] = m_players[n]
+     	   j++
+     	   n++
+     	   break
+
+     	m_players = tmp;
+     	i = j;
+      io.sockets.emit 'send_data', m_players