internal static TubeNetwork GetNetworkAtTile(GameLocation location, Vector2 startTile, ISet <Vector2> visited)
{
var ports = new List <PortObject>();
var toVisit = new Queue <Vector2>();
toVisit.Enqueue(startTile);
while (toVisit.Count > 0)
{
Vector2 tile = toVisit.Dequeue();
if (visited.Contains(tile))
{
continue;
}
visited.Add(tile);
if (location.objects.TryGetValue(tile, out SObject o) && o is PortObject port)
{
ports.Add(port);
port.UpdateAttachedChest(location);
}
else if (location.terrainFeatures.TryGetValue(tile, out TerrainFeature t) && t is TubeTerrain)
{
// Keep searching.
}
else if (TileHelper.TryGetBuildingEntrance(location, tile) is GameLocation indoors)
{
var visitedIndoors = new HashSet <Vector2>();
foreach (Vector2 indoorTile in TileHelper.GetTilesNearWarps(indoors))
{
if (TubeNetwork.GetNetworkAtTile(indoors, new Vector2(indoorTile.X, indoorTile.Y), visitedIndoors) is TubeNetwork network)
{
ports.AddRange(network.Ports);
// We stop at the first one because tiles may overlap, and we don't want to double-add networks. It's not strictly correct,
// but it should work as long as buildings don't have multiple entrances.
break;
}
}
}
else
{
continue;
}
foreach (Vector2 adjacent in Utility.getAdjacentTileLocations(tile))
{
toVisit.Enqueue(adjacent);
}
}
if (ports.Count > 0)
{
return new TubeNetwork()
{
Ports = ports.ToArray()
}
}
;
return(null);
}
internal static IEnumerable <TubeNetwork> GetAllNetworksIn(GameLocation location)
{
var visited = new HashSet <Vector2>();
foreach (Vector2 tile in location.GetTiles())
{
if (visited.Contains(tile))
{
continue;
}
if (TubeNetwork.GetNetworkAtTile(location, tile, visited) is TubeNetwork network)
{
yield return(network);
}
}
}