jquery - wheel of fortune demo

by jquery4u

HTML

<script src="http://ricostacruz.com/jquery.transit/jquery.transit.min.js"></script>
<!-- By http://jquery4u.com / Sam Deering -->
<div class="wheel-wrap">
    <img class="wheel" src="http://jquery4u.com/images/wheeloffortune.png" />
    <img class="marker" src="http://jquery4u.com/images/marker.png" />
</div>

CSS

.wheel-wrap {
    position: relative;
    width: 550px;
    height: 550px;
    overflow: hidden;
    margin: 0 auto;
    z-index: 1;
}
.marker {
    top: 10px;
    left: 250px;
    z-index: 2;
    position: absolute;
}
.wheel {
    top: 90px;
    left: 75px;
    width: 550px;
    z-index: 1;
}

JavaScript

window.WHEELOFFORTUNE = {

            cache: {},

            init: function () {
                console.log('controller init...');

                var _this = this;
                this.cache.wheel = $('.wheel');
                this.cache.wheelMarker = $('.marker');
                this.cache.wheelSpinBtn = $('.wheel'); //im using the wheel as the spin button but simply change this to a button if you want.

                //mapping is backwards as wheel spins clockwise //1=win
                this.cache.wheelMapping = [400, 120, 80, 750, 150, 300, 60, 175, 500, 125, 75, 1000, 120, 200, 90, 600, 100, 250].reverse();

                this.cache.wheelSpinBtn.on('click', function (e) {
                    e.preventDefault();
                    if (!$(this).hasClass('disabled')) _this.spin();
                });

                //reset wheel
                this.resetSpin();

                //setup prize events
                this.prizeEvents();
            },

            spin: function () {
                console.log('spinning wheel');

                var _this = this;

                // reset wheel
                this.resetSpin();

                //disable spin button while in progress
                this.cache.wheelSpinBtn.addClass('disabled');

                /*
                    Wheel has 10 sections.
                    Each section is 360/10 = 36deg.
                */
                var deg = 1500 + Math.round(Math.random() * 1500),
                    duration = 6000; //optimal 6 secs

                _this.cache.wheelPos = deg;

                //transition queuing
                //ff bug with easeOutBack
                this.cache.wheel.transition({
                    rotate: '0deg'
                }, 0)
                    .transition({
                    rotate: deg + 'deg'
                }, duration, 'easeOutCubic');

                //move marker
                _this.cache.wheelMarker.transition({
                    rotate:...