spaceconquest.Warship.Shootable C# (CSharp) Method

        private void Shootable(HashSet<Hex3D> hexes, Hex3D h, int r)
        {
            if (r <= 0) return;
            foreach (Hex3D n in h.getNeighbors())
            {
                hexes.Add(n);
                Shootable(hexes, n, r - 1);
            }
        }