Моб в лабиринте

    void Update () {
        if (_sred)
        Step();
        Way();
 
    }
    private void Step()
    { 
        List<Vector3> mas = new List<Vector3>();
        if (!Physics.Raycast(new Ray(transform.position, Vector3.up), dic))
        {
            mas.Add(Vector3.up);
        }
        if (!Physics.Raycast(new Ray(transform.position, Vector3.down), dic))
        {
            mas.Add(Vector3.down);
        }
        if (!Physics.Raycast(new Ray(transform.position, Vector3.right), dic))
        {
            mas.Add(Vector3.right);
        }
        if (!Physics.Raycast(new Ray(transform.position, Vector3.up), dic))
        {
            mas.Add(Vector3.left);
        }
        coordinate = mas[rnd.Next(mas.Count)];
        _sred = false;
    }
    private void Way()
    {
        if (!Physics.Raycast(new Ray(transform.position, coordinate), dic))
        {
            transform.position = Vector3.MoveTowards(transform.position, transform.position + coordinate/4, Time.deltaTime * speed);
            if (coordinate.y != 0)
                if (!Physics.Raycast(new Ray(transform.position, Vector3.right), dic) && !Physics.Raycast(new Ray(transform.position, Vector3.left), dic))
                    _sred = true;
            if (coordinate.x != 0)
                if (!Physics.Raycast(new Ray(transform.position, Vector3.up), dic) && !Physics.Raycast(new Ray(transform.position, Vector3.down), dic))
                    _sred = true;
        }
        else _sred = true;
    }