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    void Update()
    {
        if (Input.GetKey("left"))
            transform.Rotate(0, Time.deltaTime * -90, 0);
        if (Input.GetKey("right"))
            transform.Rotate(0, Time.deltaTime * 90, 0);
        if (Input.GetKey("up"))
            transform.Rotate(Time.deltaTime * 90, 0, 0);
        if (Input.GetKey("down"))
            transform.Rotate(Time.deltaTime * -90, 0, 0);
    }                                
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public GameObject PrefabKoule;                   
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float jakDlouhoNabijim = 0f;
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        if (Input.GetKey(KeyCode.Space))
            jakDlouhoNabijim += Time.deltaTime;
        else
        {
            if (jakDlouhoNabijim > 0f) // vystrelit:
            {
                float SILA = 1000f;
                Vector3 odkud = transform.position + Vector3.up;
                // aby nestrelil sam sebe
                GameObject koule = Instantiate(PrefabKoule, odkud, Quaternion.identity);
                Rigidbody krb = koule.GetComponent<Rigidbody>();
                krb.AddForce(jakDlouhoNabijim * SILA * this.transform.forward);
                jakDlouhoNabijim = 0f; // abych nestrilel, dokud zase nenabiju
            }
        }
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public TMP_Text TextSilaVystrelu;
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TextSilaVystrelu.text = "Cas: "+123.45.ToString() + "s";
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public AudioClip zvuk;
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AudioSource.PlayClipAtPoint(zvuk, transform.position);
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