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'use strict';
var Orientation = function() {
this.onLeft = new Phaser.Signal();
this.onRight = new Phaser.Signal();
this.onUp = new Phaser.Signal();
this.onDown = new Phaser.Signal();
var previousEvent = {
gamma: 0,
beta: 0
};
var threshhold = 15;
if (window.DeviceOrientationEvent) {
window.addEventListener('deviceorientation', function(event) {
if (event.gamma < -threshhold && previousEvent.gamma >= -threshhold) {
this.onLeft.dispatch();
}
if (event.gamma > threshhold && previousEvent.gamma <= threshhold) {
this.onRight.dispatch();
}
if (event.beta < -threshhold && previousEvent.beta >= -threshhold) {
this.onUp.dispatch();
}
if (event.beta > threshhold && previousEvent.beta <= threshhold) {
this.onDown.dispatch();
}
previousEvent.gamma = event.gamma;
previousEvent.beta = event.beta;
});
}
};
module.exports = Orientation;
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