private void ready()
{
Debug.Assert(state == GameState.Ready);
// Reset score
scoreCounter.Reset();
// Play reset noise
whooshSound.Play();
// Flash screen to hide the UI/backdrop element transitions
screenFlash.Flash(0.0, 700.0);
// Reset state of game elements
bird.Reset();
obstacles.Reset();
// Restart the backdrop elements
groundBackdrop.Start();
skyBackdrop.Start();
// Reset the UI elements
gameOverSprite.Hide();
logoSprite.Show();
}