public void performAction(GameTime time, Zombie target)
        {
            //base.performAction();

            if (elapsedTime.Seconds > ATTACK_RATE)
            {
                elapsedTime = elapsedTime.Subtract(elapsedTime);
                target.doDamage(20);
            }

            elapsedTime += time.ElapsedGameTime;

            if (elapsedTime.Milliseconds > 900)
            {
                elapsedTime.Add(oneSecond);
            }
        }