private bool wallTR;

    private bool wallTL;

    private bool moving; 

    private int randomMove;

    private void Update()

    {

        private bool wallTR;

        private bool wallTL;

        private bool moving; 

        private int randomMove;

        Random rand = new Random();

        if (!moving)

        {

            moving = true;

            randomMove = rand.Next(1,4);

        }

        if (rand == 1 && !pause)

        {

            Invoke("Pause", 1f);

            rb.velocity.y = 0

        }

        else if (rand == 2 && !pause && !wallTR)

        {

            Invoke("Pause", 1f);

            rb.velocity.x = 1;

        }

        else if (rand == 3 && !pause && !wallTL)

        {

            Invoke("Pause", 1f);

            rb.velocity.x = -1;

        }

    }

    private void Pause()

    {

        pause = false;

    }