private static Tiles ConnectDoorsViaConnectingLine(Tiles tilesWithUnconnectedDoors, ILine firstProjection, ILine secondProjection, ILine connectingLine)
{
var startOfConnectingLine = connectingLine.First();
var firstDoor = firstProjection.Single(tilePosition => tilesWithUnconnectedDoors.IsTileType <Door>(tilePosition.Coordinates));
var fromFirstToConnecting = ExtractLineBetween(firstProjection, firstDoor.Coordinates, startOfConnectingLine.Coordinates);
var endOfConnectingLine = connectingLine.Last();
var secondDoor = secondProjection.Single(tilePosition => tilesWithUnconnectedDoors.IsTileType <Door>(tilePosition.Coordinates));
var fromConnectingToSecond = ExtractLineBetween(secondProjection, secondDoor.Coordinates, endOfConnectingLine.Coordinates);
var finalRoute = new Line();
finalRoute.AddRange(fromFirstToConnecting);
finalRoute.AddRange(connectingLine.Select(Tunnel));
finalRoute.AddRange(fromConnectingToSecond);
var stateChange = finalRoute.ToTilesState();
var tilesWithNewlyConnectedDoors = tilesWithUnconnectedDoors.Clone(stateChange);
return(tilesWithNewlyConnectedDoors);
}
private static Tiles BuildTilesRegistry(string inputTiles, DispatchRegistry registry,
IRandomNumberGenerator randomNumbers)
{
string[] ExtractLines()
{
var newLineChars = Environment.NewLine.ToCharArray();
return(inputTiles.Split(newLineChars));
}
IEnumerable <string> RemoveEmptyStrings(string[] lines)
{
return(lines.Where(line => !string.IsNullOrWhiteSpace(line)));
}
(int MaxRows, int MaxColumns) GetUpperBounds(List <string> lines)
{
int maxRow = lines.Count;
var maxColumns = lines.Max(line => line.Length);
return(maxRow, maxColumns);
}
var linesWithBlanks = ExtractLines();
var linesToProcess = RemoveEmptyStrings(linesWithBlanks).ToList();
var stateChange = StateChangeForInput(registry, linesToProcess);
var(rows, columns) = GetUpperBounds(linesToProcess);
var tiles = new Tiles(rows, columns, registry, randomNumbers);
var tilesState = stateChange.ToTilesState();
tiles = tiles.Clone(tilesState);
return(tiles);
}
