A simple Piwik tracking plugin for your Impact.js games.

piwik-tracking.js

/**
 * Loosely based on tracking.js for Google Analytics by Jesse Freeman: https://gist.github.com/jessefreeman/7531064
 * How to Use:
 *  - Copy to your lib/plugins folder, require in main.js
 * 
 *  - in main.js init():
 *       this.tracking = new PiwikTracking();
 *       ig.game.tracking = this.tracking;
 * 
 *  - install Piwik tracking code in your index.html like you normally do 
 * 
 *  - use throughout your entire game like so: ig.game.trackEvent(...);
 */
ig.module( 
	'plugins.piwik-tracking'
)
.requires(
)
.defines(function() {
    
    PiwikTracking = ig.Class.extend({

        debug: false,
        
        init: function() {
        },
             
        trackEvent: function(category, name, action, value) {
            if (_paq) {
                // trackEvent(category, action, [name], [value]), see:
                // http://developer.piwik.org/api-reference/tracking-javascript#list-of-all-methods-available-in-the-tracking-api
                _paq.push(['trackEvent', category, name, action, value]);
                if (this.debug) {
                    console.log("trackEvent: " + category + " -> " + name + ": " + action + " ("+value+")");
                }
            }
            else {
                this.analyticsNotFound();
            }
        },
                
        analyticsNotFound: function() {
            if (this.debug) {
                console.log("Piwik Tracker not found.");
            }
        }
    });
});