rc-web@21: /*
rc-web@0: ////////////////////////////////////////////
rc-web@21: 
rc-web@21: nodescore server
rc-web@21: nodescore.kiben.net
rc-web@21: nodescore@kiben.net
rc-web@21: 
rc-web@0: ////////////////////////////////////////////
rc-web@21: */
rc-web@0: 
rc-web@0: var sio = require('socket.io')
rc-web@0: , http = require('http')
rc-web@0: , fs = require('fs')
rc-web@0: ,  $ = require('jQuery')
rc-web@0: , static = require('node-static');
rc-web@0: 
rc-web@21: 
rc-web@0: // run webserver serving static html
rc-web@0: ////////////////////////////////////////////
rc-web@0: 
rc-web@0: var clientFiles = new static.Server('./www');
rc-web@0: var httpServer = http.createServer(function(request, response) {
rc-web@0:     request.addListener('end', function () {
rc-web@0: 	clientFiles.serve(request, response);	    
rc-web@0:     });    
rc-web@0: });
rc-web@11: httpServer.listen(8889);
rc-web@0: 
rc-web@0: ////////////////////////////////////////////
rc-web@0: // connect to websockets 
rc-web@0: ////////////////////////////////////////////
rc-web@0: 
rc-web@0: var io = sio.listen(httpServer)
rc-web@0: , nicknames = {};
rc-web@0: 
rc-web@0: io.set('log level', 2); // reduce logging
rc-web@0: io.sockets.on('connection', function (socket) {
rc-web@0: 
rc-web@0:     ////////////////////////////////////////////
rc-web@0:     // metronome
rc-web@0:     ////////////////////////////////////////////
rc-web@8:     socket.on('metroStop', stopMetro)
rc-web@0:     function stopMetro () {
rc-web@0: 	metroState=0;
rc-web@0:     };
rc-web@0:     
rc-web@8: 
rc-web@0:     ////////////////////////////////////////////
rc-web@0:     // Chronometer
rc-web@0:     ////////////////////////////////////////////
rc-web@0: 
rc-web@0:     // number padding: 0 to 00
rc-web@0: 
rc-web@0:     function pad(number) { return (number < 10 ? '0' : '') + number }
rc-web@0:     
rc-web@0:     // the chronometer initial states
rc-web@0:     var chronstate = 0; var zecsec = 0; var seconds = -20; 
rc-web@0:     var mins = 0; var hours = 0;
rc-web@0:  
rc-web@0:     function startChr() { if (chronstate !== 1) {
rc-web@0: 	chronstate = 1; chronometer();} 
rc-web@0: 			}      // if not already started start the chronometer    
rc-web@0:     function stopChr() {  chronstate = 0; }  // stop the chronometer
rc-web@8:     function resetChr() {  console.log("reset");
rc-web@8: 			   clearInterval();
rc-web@8: 			   chronstate = 0;
rc-web@8: 			   zecsec = 0; seconds = 0; 
rc-web@8: 			    mins = 0; hours = 0; 
rc-web@8: 			    chronstate = 0; 
rc-web@8: 			   var chron = pad(hours) +":"+pad(mins)+ ':'+ pad(seconds)+ ":"+ zecsec
rc-web@8: 			   socket.broadcast.emit('chronFromServer', chron)
rc-web@8: 			   socket.emit('chronFromServer', chron)
rc-web@8: 			}
rc-web@8:     
rc-web@22:     var ding
rc-web@22:     function dateTime() { 
rc-web@22: 
rc-web@22: 	ding = setInterval( function () {
rc-web@22: 	    var datetime= new Date(); 
rc-web@22: 	    var now=datetime.toString()
rc-web@22: //	    console.log(now);
rc-web@22: 	    socket.broadcast.emit("dateTime", now);
rc-web@22:  	    socket.emit("dateTime", now);}, 1000)}
rc-web@22:    
rc-web@22:     clearInterval(ding);
rc-web@22:     dateTime()
rc-web@22: 
rc-web@22:     
rc-web@0:     function chronometer() {
rc-web@8: 	
rc-web@0: 	if (chronstate==1){
rc-web@0: 	zecsec += 1;       // set tenths of a second
rc-web@0: 	if(zecsec > 9) { zecsec = 0; seconds += 1;}
rc-web@0: 	if(seconds > 59) { seconds = 0;mins += 1;}
rc-web@0: 	if(mins > 59) { mins = 0; hours += 1; }
rc-web@0: 	var chron = pad(hours) +":"+pad(mins)+ ':'+ pad(seconds)+ ":"+ zecsec
rc-web@0: 	setTimeout(function(){chronometer()}, 100);
rc-web@0: 	socket.broadcast.emit('chronFromServer', chron)
rc-web@0: 	socket.emit('chronFromServer', chron)
rc-web@0: 	}
rc-web@0:     }
rc-web@0:     
rc-web@0:     socket.on('startChr', function () { startChr();});
rc-web@0:     socket.on('stopChr', function () { stopChr();});
rc-web@0:     socket.on('resetChr', function () { resetChr();});
rc-web@0: 
rc-web@0:     ////////////////////////////////////////////  
rc-web@0:     // some latency calculations
rc-web@0:     ///////////////////////////////////////////
rc-web@0: 
rc-web@23:     /*
rc-web@23:       a ping is periodically broadcast to all connected clients each
rc-web@23:       connected returns a pong to the server via an "emit" and in turn
rc-web@23:       the server returns each unique client a report of the latency
rc-web@23:       via another emit - the emit only sends to the source of the
rc-web@23:       request, whereas the broadcast.emit..  broadcasts.. ie to all
rc-web@23:       connected clients
rc-web@23: 
rc-web@23:       TODO: smooth range and average out results to remove erratic ping
rc-web@23:       times.
rc-web@23: 
rc-web@23:       TODO:
rc-web@23:       The result then needs to be used to stagger outgoing messages to
rc-web@23:       compensate for latency - how much compensation is more connected
rc-web@23:       to the time that any audio/video feed needs to encode/decode as
rc-web@23:       the latency of the route from node A to node B is inavoidable?!
rc-web@23:       so maybe latency is irrelevant in this context - we just need to
rc-web@23:       stagger signals according to encoding decoding times.. hmmm
rc-web@23:     */
rc-web@23:     
rc-web@23: 
rc-web@23: 
rc-web@23: // periodically broadcast  a ping
rc-web@23: 
rc-web@0:     function serverTime(freq) {
rc-web@0: 	//	clearInterval();
rc-web@0: 	st=setInterval(function() {
rc-web@0: 	    var d = new Date(); var n = d.getTime(); 
rc-web@0: 	    socket.emit("timeFromServer", n); 
rc-web@23: 	    socket.broadcast.emit("timeFromServer", n); 
rc-web@23: 
rc-web@0: 	}, freq);   
rc-web@0:     }
rc-web@23: 
rc-web@23:     // recieve the pong calculate the latency and
rc-web@23:     // return the response to the client
rc-web@23: 
rc-web@0:     socket.on("clientTimeResponse", function(x) {
rc-web@0: 	var d = new Date(); var n = d.getTime();
rc-web@0: 	var latency = (n-x)/2;
rc-web@0: 	//console.log("SERVERTIME:"+x + " LATENCY:" + latency);
rc-web@0: 	socket.emit("latencyFromServer", latency);
rc-web@23: 
rc-web@0:     });	      
rc-web@23: 
rc-web@23:     // this is the trigger from the control client to start the process
rc-web@23:     // maybe remove this and have latency connections constantly running
rc-web@0:     
rc-web@0:     socket.on("getLatencies", function(x){
rc-web@0: 	serverTime(x);
rc-web@0:     });
rc-web@0: 
rc-web@0:     ////////////////////////////////////////////
rc-web@0:     // magic square sequencer
rc-web@0:     ////////////////////////////////////////////
rc-web@0: 
rc-web@0:     var sequencerState = 0;
rc-web@0:     var timemultiplier=1000
rc-web@0:     var srcsqr = []
rc-web@0: 
rc-web@0:     srcsqr[0] = [22,21,24,25,06,07];
rc-web@0:     srcsqr[1] = [20,23,27,26,05,04];
rc-web@0:     srcsqr[2] = [03,00,17,16,35,34];
rc-web@0:     srcsqr[3] = [01,02,19,18,33,32];
rc-web@0: 
rc-web@0:     var seqA = { metrobeat:0, voice:1, name: "A", counter: 0, mm: 60, beatsinbar: 4, durations: srcsqr[0], units: [1,2,3,1,2,4]};
rc-web@0:     var seqB = { metrobeat:0, voice:2, name: "B", counter: 0, mm: 60, beatsinbar: 4, durations: srcsqr[1], units: [3,2,1,1,2,3]};
rc-web@0:     var seqC = { metrobeat:0, voice:3, name: "C", counter: 0, mm: 60, beatsinbar: 4, durations: srcsqr[2], units: [4,5,6,5,4,2]};
rc-web@0:     var seqD = { metrobeat:0, voice:4, name: "D", counter: 0, mm: 60, beatsinbar: 4, durations: srcsqr[3], units: [2,3,4,2,3,1]};
rc-web@8:     
rc-web@0: 
rc-web@9:     countdowntick = function(seq){
rc-web@8: 
rc-web@0: 	var outcount = 12; var incount=12;
rc-web@0: 	var time = ((seq.durations[seq.counter]+1) *timemultiplier) + 30000 + (outcount*1000);
rc-web@0: 	var ztime = time; var totaltime = time/1000
rc-web@0: 	var unit = seq.units[seq.counter];
rc-web@0: 	var tempoms = 60000/seq.mm
rc-web@8: 	
rc-web@10: 	var tock = setInterval(function(){
rc-web@0: 	    
rc-web@0: 	    if (ztime >= 0 ){
rc-web@0: 		// basic unit is still the second/1000ms - change this to tempoms? no i dont think so
rc-web@0: 		// count in and count out
rc-web@0: 		////////////////////////////////////////////
rc-web@0: 		
rc-web@0: 		var counter = ztime/1000
rc-web@10: 		socket.emit('counterText', seq.voice, seq.counter, counter);
rc-web@10: 
rc-web@0: 		if (counter > 0 && counter <= outcount ) {              
rc-web@0: 		    socket.broadcast.emit('countinFromServer', seq.voice, counter, "","", "white", "transparent");
rc-web@0: 		}
rc-web@20: 		
rc-web@0: 		// remove displayed number with " " at end of both countin/out
rc-web@20: 		
rc-web@0: 		if (counter == 0 ) {
rc-web@0: 		    socket.broadcast.emit('countinFromServer', seq.voice, " ", "","", "white","transparent");
rc-web@0: 		}
rc-web@0: 		
rc-web@0: 		if (counter > (totaltime)-incount  && counter <= totaltime ) {              
rc-web@0: 		    socket.broadcast.emit('countinFromServer', seq.voice, counter-(totaltime-incount), "","", "red","gray");	    
rc-web@0: 		}
rc-web@0: 		
rc-web@0: 		if (counter == (totaltime)-incount ) {
rc-web@0: 		    socket.broadcast.emit('countinFromServer', seq.voice, " ", "","", "red","gray");
rc-web@0: 		}
rc-web@0: 	    	
rc-web@0: 		// push out the pulse to metronome	
rc-web@20: 
rc-web@0: 		seq.metrobeat = (seq.metrobeat+1)%seq.beatsinbar ;
rc-web@0:      		socket.broadcast.emit('metroPulse', tempoms, seq.voice,seq.metrobeat); 
rc-web@0: 		socket.emit('metroPulse', tempoms, seq.voice,seq.metrobeat);	
rc-web@21: //	    	socket.broadcast.emit("pageFlipfromserver", seq.voice, unit, time, seq.mm,seq.counter);
rc-web@0: 	    }
rc-web@0: 	    
rc-web@0: 	    // flip the page
rc-web@20: 
rc-web@0: 	    if (ztime == 0){
rc-web@10: 		socket.emit('counterText', seq.voice, seq.counter, " ");
rc-web@0: 		seq.counter = (seq.counter + 1) % seq.durations.length	    		
rc-web@0: 		socket.broadcast.emit("pageFlipfromserver", seq.voice, unit, time, seq.mm,seq.counter);
rc-web@21: // 		socket.emit("pageFlipfromserver", seq.voice, unit, time, seq.mm,seq.counter);		
rc-web@21: 		delete tock;	
rc-web@0: 		step(seq);     
rc-web@0: 	    }
rc-web@8: 
rc-web@8: 	    if (ztime < 0){}	    	    	    
rc-web@0: 	    // decrement the time 
rc-web@8: 	    ztime -= 1000
rc-web@8: 			
rc-web@9: 	}, tempoms)
rc-web@10: 
rc-web@10: 
rc-web@23: //	socket.on('stopSeq', function (seq) { 
rc-web@23: //	    console.log("stop")
rc-web@23: //	    clearInterval(tock);	    
rc-web@23: //	    sequencerState=0;  
rc-web@23: //	    stopChr();
rc-web@23: //	});
rc-web@8: 			  };
rc-web@0:     
rc-web@0:     step = function (seq) {
rc-web@0: 	clearInterval(countdowntick);
rc-web@0: 	countdowntick(seq)
rc-web@0:     };
rc-web@0:     
rc-web@0:     socket.on('startSeq', function () { 
rc-web@0: 	if (sequencerState == 0) { 
rc-web@0: 	    sequencerState=1;
rc-web@9: 	    startChr();
rc-web@9: 	    step(seqA); step(seqB); step(seqC); step(seqD);	    
rc-web@8: 	    ztime =-1;
rc-web@0: 	}
rc-web@9: 	else console.log("already started...")
rc-web@0:     });
rc-web@9: 
rc-web@0: 
rc-web@8:     socket.on('resetSeq', function () { 
rc-web@8: 	console.log("rrrrreset")
rc-web@8: 	resetChr();
rc-web@8: 	
rc-web@8:     });
rc-web@8: 
rc-web@8: 
rc-web@0: });
rc-web@0: 
rc-web@9: 
rc-web@0: 
rc-web@0:   
rc-web@0: 
rc-web@0: