public static IEnumerator AdRoutine()
{
// Disable game input
ButtonController.showingAd = true;
// Dim the game
iTween.CameraFadeAdd();
iTween.CameraFadeTo(1f, 1f);
// wait a while
yield return(new WaitForSeconds(1f));
// Show the ad
HZInterstitialAd.show();
// wait a while
yield return(new WaitForSeconds(3f));
// Hide the ad
HZInterstitialAd.hide();
// Undim the game
iTween.CameraFadeTo(0f, .5f);
yield return(new WaitForSeconds(.5f));
iTween.CameraFadeDestroy();
// Enable input
ButtonController.showingAd = false;
}