phaser/src/components/UpdateManager.js

/**
* @author       Richard Davey <rich@photonstorm.com>
* @copyright    2016 Photon Storm Ltd.
* @license      {@link https://github.com/photonstorm/phaser/blob/master/license.txt|MIT License}
*/

/**
* Dirty! Manager
*
* @class
*/
Phaser.UpdateManager = function (game)
{
    this.game = game;

    this.list = [];

    this.i = 1;

    this.running = false;
    
    this.processed = 0;
};

Phaser.UpdateManager.prototype.constructor = Phaser.UpdateManager;

Phaser.UpdateManager.prototype = {

    stop: function ()
    {
        if (!this.running)
        {
            return;
        }

        // console.log(this.i, 'UpdateManager.stop', this.processed);

        this.list.length = 0;

        this.i++;
    },

    start: function ()
    {
        if (!this.running)
        {
            return;
        }

        var len = this.list.length;

        if (len === 0)
        {
            return;
        }

        // console.log(this.i, 'UpdateManager.start', len);

        this.processed = 0;

        for (var i = 0; i < len; i++)
        {
            //  Because it may have already been processed (as a child of another Transform that was updated)
            if (this.list[i] && this.list[i]._dirty)
            {
                this.processed++;
                this.list[i].update();
            }
        }
    },

    add: function (transform)
    {
        this.list.push(transform);
    }

};