/**
 * System takes care of updating all the entities (based on their component data)
 * @param apiSystem GameLib.API.System
 * @constructor
 */
GameLib.System.Animation = function(
    apiSystem
) {
    GameLib.System.call(
        this,
        apiSystem
    );
};

GameLib.System.Animation.prototype = Object.create(GameLib.System.prototype);
GameLib.System.Animation.prototype.constructor = GameLib.System.Animation;

GameLib.System.Animation.prototype.start = function() {

    GameLib.System.prototype.start.call(this);

    this.animateSubscription = GameLib.Event.Subscribe(
        GameLib.Event.ANIMATE,
        this.animate
    );

};

GameLib.System.Animation.prototype.animate = function(data, clientCallback) {

    this.renderSubscription = GameLib.Event.Subscribe(
        GameLib.Event.BEFORE_RENDER,
        function(data) {
            if (clientCallback(data)) {
                this.renderSubscription.remove();
            }
        }.bind(this)
    )

};

GameLib.System.Animation.prototype.stop = function() {

    GameLib.System.prototype.stop.call(this);

    this.animateSubscription.remove();
};