private void OnTriggerEnter(Collider col) { if (col.gameObject.tag == "Ball" && available) { audio_manager.PlayItemCrash(); available = false; turret_controller.AddBalls(5); } if (col.gameObject.tag == "Barrel" && available) { audio_manager.PlayItemCrash(); available = false; max_life_time += 5.0f; } }