Antiflood stack

class Test
{

    private var antiflood_stack:Array<Void->Void>;
    private var antiflood_timestamp:Float = 0;
    private var delay:Int;

    public function new(delay: Int) {
        this.delay = delay;
        antiflood_stack = new Array<Void->Void>();

        var antiflood_timer = new haxe.Timer(delay);
        antiflood_timer.run = function() {
            var callback = antiflood_stack.pop();

            if (callback != null){
                callback();
                antiflood_timestamp = Date.now().getTime();
            }
        }
    }

    static function main() {
        var antiflood = new Test(4000);

        var i = 0;

        antiflood.call(function() {
            trace('test ${i++}');
        });

        antiflood.call(function() {
            trace('test ${i++}');
        });
        antiflood.call(function() {
            trace('test ${i++}');
        });
        antiflood.call(function() {
            trace('test ${i++}');
        });
    }

    public function call(func: Void->Void)
    {

        if(antiflood_stack.length == 0 && (Date.now().getTime() - antiflood_timestamp) > delay)
        {
                func();
                antiflood_timestamp = Date.now().getTime();
        }
        else
        {
            antiflood_stack.insert(0, func);
        }
    }
}