private void OnTriggerEnter2D(Collider2D collision) { if (collision.tag == "Player") { if (normalBackgorundMusic != null && barBackgroundClip != null) { if (audioManager.backgroundMusic.clip.Equals(normalBackgorundMusic)) { audioManager.ChangeBackgroundMusic(barBackgroundClip); } else { audioManager.ChangeBackgroundMusic(normalBackgorundMusic); } } } }