Exemple #1
0
        private void BuildRoads()
        {
            var topology = new Topology(this);

            var roads   = new List <List <Vector2> > ();
            var streets = new List <List <Vector2> > ();

            foreach (var gate in Gates.ToList())
            {
                var endPoint = Market.Shape.Vertices.OrderBy(v => (gate - v).magnitude).First();

                var street = topology.BuildPath(gate, endPoint, topology.Outer);
                if (street != null)
                {
                    //roads.Add(street);
                    streets.Add(street);

                    if (CityWall.Gates.Contains(gate))
                    {
                        var direction = GeometryHelpers.Scale(gate - Center, 100000);

                        var start = topology.Node2V.Values.OrderBy(v => (v - direction).magnitude).First();

                        var road = topology.BuildPath(start, gate, topology.Inner);
                        if (road == null)
                        {
                            CityWall.Gates.Remove(gate);
                            CityWall.Towers.Add(gate);
                            Gates.Remove(gate);
                        }
                        else
                        {
                            roads.Add(road);
                        }
                    }
                }
            }

            if (!roads.Any())
            {
                throw new InvalidOperationException("No roads into the town");
            }

            Roads.AddRange(TidyUpRoads(roads));
            Streets.AddRange(TidyUpRoads(streets));

            foreach (var road in Roads)
            {
                var insideVertices = road.Where(rv => Patches.Where(p => p.Shape.ContainsPoint(rv)).All(p => p.WithinCity)).Except(Gates).ToList();
                foreach (var insideVertex in insideVertices)
                {
                    road.Remove(insideVertex);
                }
            }
        }