gistfile1.js

function MatchClock(match, callback) {
                this.currentHalf = match.currentHalf || 0;
                this.currentHalfOffset = match.currentHalfOffset || 0;
                this.startTime = new Date(match.startTime);
                this.paused = match.paused;
                this.clockDiff = new Date().getTime() - new Date(match.serverTime).getTime();
                this.callback = callback;
                if(typeof this.paused !== "undefined" && !this.paused) {
                    this.start(this.callback);
                }
                match.on('change', function(data) {
                    console.log("Received event: %j, %j", data, this);
                    if(data.type === EventType.PAUSE || data.type === EventType.MATCH_END) {
                        console.log("Received pause or half time event. Stopping");
                        this.stop();
                    }
                    else if(data.type === EventType.HALF_START || data.type === EventType.MATCH_START) {
                        if(data.type === EventType.MATCH_START) {
                            this.startTime = new Date(data.matchTime.start);
                        }
                        this.currentHalf = data.half;
                        this.currentHalfOffset = data.offset;
                        this.start(this.callback);
                    }
                }.bind(this));
            }

            MatchClock.prototype.start = function(cb) {
                this.paused = false;
                this.interval = setInterval(function() {
                    this.computeTime();
                    cb();
                }.bind(this), 1000);
                console.log("Interval: %j %j", this, this.interval);
            };

            MatchClock.prototype.stop = function() {
                console.log("Attempting to clear interval: %j", this.interval);
                this.paused = true;
                clearInterval(this.interval);
            };

            MatchClock.prototype.computeTime = function() {
                var adjustedOffset = (new Date().getTime() - this.clockDiff - this.startTime.getTime()) / 1000;
                var halfOffset = adjustedOffset - this.currentHalfOffset;
                var base = (this.currentHalf - 1) * (this.halfLength || 45) * 60;
                var matchOffset = base + halfOffset;
                this.min = Math.floor(matchOffset / 60);
                this.sec = Math.round(matchOffset - this.min * 60);
            };