private void OnDestroy()
 {
     SignalMachine.RemoveListener <DeathSignal>(OnDeath);
     SignalMachine.RemoveListener <NewScoreSignal>(OnScoreChange);
     SignalMachine.RemoveListener <NewLeaderboardScoreSignal>(OnHighScore);
 }
 private void OnDestroy()
 {
     SignalMachine.RemoveListener <NewBombCountSignal>(OnBombCount);
     SignalMachine.RemoveListener <NewScoreSignal>(OnScore);
 }