AIsOfCatan.Board.GetPossibleRoads C# (CSharp) Method

        public Edge[] GetPossibleRoads(int playerID)
        {
            List<Edge> result = new List<Edge>(15);
            foreach(Edge edge in this.GetAllEdges()){
                // must be empty
                if (roads.ContainsKey(edge)) continue;

                foreach (Intersection inter in this.GetAdjacentIntersections(edge))
                {
                    // must not be other players piece at intersection
                    Piece atInter = this.GetPiece(inter);
                    if (atInter != null && atInter.Player != playerID) continue;

                    // must have one of the players roads connected to one of the end edges
                    if(this.GetAdjacentEdges(inter).Any(e => this.GetRoad(e) == playerID))
                    {
                        result.Add(edge);
                        break;
                    }
                }
            }
            return result.ToArray();
        }