private void AdvanceAnimation()
 {
     if (Time.time > ANIMATION_DELAY + _lastUpdatedAnimationTime)
     {
         currentFrame = OurUtils.ValueLooper(currentFrame, 0, 3);
         _lastUpdatedAnimationTime = Time.time;
     }
 }
    private void AdvanceBirdAnimation()
    {
        if (currentFrame == 0 && _birdFlap % 3 == 0)
        {
            _actualAnimationDelay = GLIDE_TIME;
        }
        if (Time.time > _actualAnimationDelay + _lastUpdatedAnimationTime)
        {
            //currentFrame = OurUtils.ValueBouncer(currentFrame, 0, 2);
            currentFrame = OurUtils.ValueLooper(currentFrame, 0, 3);
            _lastUpdatedAnimationTime = Time.time;
            _actualAnimationDelay     = ANIMATION_DELAY;

            _birdFlap++;
        }
    }