// Update is called once per frame
    void Update()
    {
        if (Input.GetKeyDown("up"))
        {
            if (currentNote != null && currentNote.GetHittable() && currentNote.spriteType == 0)
            {
                OnHitSuccess();
            }
            else
            {
                OnHitFail();
            }
        }

        if (Input.GetKeyDown("down"))
        {
            if (currentNote != null && currentNote.GetHittable() && currentNote.spriteType == 1)
            {
                OnHitSuccess();
            }
            else
            {
                OnHitFail();
            }
        }

        if (Input.GetKeyDown("left"))
        {
            if (currentNote != null && currentNote.GetHittable() && currentNote.spriteType == 2)
            {
                OnHitSuccess();
            }
            else
            {
                OnHitFail();
            }
        }

        if (Input.GetKeyDown("right"))
        {
            if (currentNote != null && currentNote.GetHittable() && currentNote.spriteType == 3)
            {
                OnHitSuccess();
            }
            else
            {
                OnHitFail();
            }
        }
    }