Harassing some sifteo cubes with javascript

test.js

function Simulator(){
	var ret = {}
	var _callback = undefined;
	var _queue = [];
    var _counter = 0;
	ret.fireCallback = function(json) {
		// console.log('Fire event '+json);
		if( _callback ) _callback(json);
	}
	ret.queueEvent = function(json) {
		// console.log('Queue event '+json);
		if( typeof(json) == 'string' )
			_queue.push(json);
		else
			_queue.push(JSON.stringify(json));
	}
	ret.popEvent = function() {
		if( _queue.length < 1 )
			return undefined;
		var r = _queue[0];
		_queue.splice(0,1);
		return r;
	}
	ret.handleEvent = function(json) {
		json = ''+json;
		var obj = undefined;
		try {
			obj = JSON.parse(json);
		} catch( e ) {
			// console.log('unable to parse: '+json);
		}
		if( typeof(obj) == 'undefined' )
			return;
		// console.log('got',obj);
		if(obj.method) {
			switch(obj.method){
				case 'link.emptyEvent':
					break;
				/*
				case 'sound.stoppedEvent':break;
				case 'cube.tiltEvent':break;
				case 'cube.touchEvent':break;
				case 'cube.tiltEvent':break;
				*/
				case 'cube.buttonEvent':
					if(obj.params[1] == true ) {
						ret.queueEvent({"method":"sound.play","params":["gliss",1.0,1.0,1],"id":_counter});
						_counter++;
					}
					break;
				default:
					console.log('Client got event',obj.method,obj.params);
					break;
			}
		}
	}
	ret.popAndSendEvent = function() { 
		var pop;
		while( pop = ret.popEvent() )
		{
			_callback(pop);
		}
	}	
	ret.setCallback = function(callback){
		_callback = callback;
	}
	ret.connect = function(){
		console.log('Client connected');
		ret.fireCallback('{"method":"app.init","id":0}');
	}
	ret.disconnect = function(){
		console.log('Client disconnected');
	}
	ret.tick = function(){
		var r=Math.round(Math.random()*2);
		var r2=Math.round(Math.random()*4);
		var r3=Math.round(Math.random()*100);
		var r4=Math.round(Math.random()*100);
		var r5=Math.round(Math.random()*100);
		var r6=Math.round(Math.random()*100);
		var r7=Math.round(Math.random()*100);
		var r8=Math.round(Math.random()*100);
		var id=Math.round(Math.random()*4);
		var r9=1+Math.round(Math.random()*20);
		switch(r) {
			case 0:
				// lazy,omg,happy
				for(var q=0; q<r9; q++ ){
	 				ret.queueEvent('{"method":"cube.fillRect","params":['+id+','+r3+','+r4+','+r5+','+r6+','+r9+'],"id":'+_counter+'}');
					_counter++;
				}
				ret.queueEvent('{"method":"cube.paint","params":['+id+',0],"id":'+_counter+'}');
				_counter++;
				break;
			case 1:
				// lazy,omg,happy
				for(var q=0; q<r9; q++ ){
					var fn = (['omg','happy','lazy','lazy'])[r2];
		 			ret.queueEvent('{"method":"cube.image","params":['+id+',"'+fn+'",'+r3+','+r4+','+r7+','+r8+','+r5+','+r6+',1,0],"id":'+_counter+'}');
					_counter++;
				}
				ret.queueEvent('{"method":"cube.paint","params":['+id+',0],"id":'+_counter+'}');
				_counter++;
				break;
		}
		
		
	}
	return ret;
}






var net = require('net');

net.createServer(function (socket) {
  var sim = new Simulator();
  socket.name = socket.remoteAddress + ":" + socket.remotePort 
  sim.setCallback( function(data) { 
	// console.log('Sending json: '+data);
    socket.write(''+data);
  } );
  sim.connect();
  sim.queueEvent('{"method":"cube.fill","params":[3,0],"id":1}');
  var timer = setInterval(function(){
	sim.tick();
	sim.popAndSendEvent();
  },100); 
  socket.on( 'data', function(data) {
	var json = ''+data;
	sim.handleEvent(''+json);
	sim.popAndSendEvent();
  } );
  socket.on( 'end', function() {
	sim.disconnect();
	clearInterval(timer);
  } );

}).listen(7777);

console.log("Up and running\n");