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'use strict';
var IO;
var LESS_THAN = /</g, GREATER_THAN = />/g, AMPERSAND = /&/g;
function sanitize (s) {
if (s)
return s.replace(LESS_THAN, '<').replace(GREATER_THAN, '>').replace(AMPERSAND, '&');
return "";
}
function sanitizeJSON (json) {
try {
var data = JSON.parse(sanitize(json));
return data;
} catch (SyntaxError) {
console.log('Invalid JSON: ' + json);
return false;
}
}
function Param(state){
var base = this;
base.state = state || {};
base.get = function(){
return base.state;
}
base.set = function(param){
if (data.key in state) {
base.state[data.key] = data.value;
return true;
}
return false;
}
}
function Grid(){
this.param = new Param({
'tempo': 125,
'pattern': [
[1,0,0,0, 1,0,0,0, 1,0,0,0, 1,0,0,0],
[0,0,0,0, 0,0,0,0, 0,0,0,0, 0,0,0,0],
[0,0,0,0, 0,0,0,0, 0,0,0,0, 0,0,0,0],
[0,0,0,0, 0,0,0,0, 0,0,0,0, 0,0,0,0],
[0,0,0,0, 0,0,0,0, 0,0,0,0, 0,0,0,0],
[0,0,0,0, 0,0,0,0, 0,0,0,0, 0,0,0,0],
[0,0,0,0, 0,0,0,0, 0,0,0,0, 0,0,0,0],
[0,0,0,0, 0,0,0,0, 0,0,0,0, 0,0,0,0]
]
});
}
function Grain(){
this.param = new Param({
'sample': 'Clap.wav',
'attack': 0, // grain envelope (attack)
'sustain': 0, // grain envelope (hold)
'step': 100, // % of envelope size used to find next grain
'rate': 100, // % of envelope size used to emit next grain
// other things in fruity were step LFO, rate LFO, panning..
});
}
function Connection (socket) {
var base = this;
function init(){
bind();
}
function bind(){
socket.on('event-join', join);
socket.on('event-mouse', mouse);
socket.on('event-chat', chat);
listen('event-grid', grid);
listen('event-grain', grain);
socket.on('disconnect', disconnect);
}
function join(json){
socket.broadcast.emit("event-join", json);
socket.emit("event-grid", grid.getState());
}
function listen(msg, obj){
socket.on(msg, function (json){
var data = sanitizeJSON(json);
if (data && 'key' in data && 'value' in data && obj.param.set(data)) {;
socket.broadcast.emit(msg, data);
}
});
}
function mouse(json){
socket.broadcast.emit("event-mouse", json);
}
function chat(json){
socket.broadcast.emit("event-chat", json);
}
function note(json){
var data = sanitizeJSON(json);
if (data) {
grid.setNote(data);
socket.broadcast.emit("event-note", data);
}
}
function disconnect(json){
base = null;
}
init();
}
var grid = new Grid ();
var grain = new Grain ();
exports.connect = function(io, socket) {
IO = IO || io;
var user = new Connection (socket);
};
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