internal override MazeTransformationStep TryPlaceExit()
{
List <MazeCoordinate> possibleExits = new List <MazeCoordinate>();
// collect all possible exits
for (int y = CurrentMaze.GetHeight() - 2; y >= CurrentMaze.GetHeight() / 2; y--)
{
possibleExits.Add(new MazeCoordinate(0, y));
}
// check in random order if exit is valid
while (possibleExits.Count > 0)
{
var possibleExit = possibleExits.ElementAt(Random.Next(possibleExits.Count));
if (this.CurrentMaze.GetMazeTypeOnPos(1, possibleExit.Y) == MazeFieldType.Corridor)
{
return(this.CurrentMaze.SetMazeTypeOnPos(0, possibleExit.Y, MazeFieldType.Exit));
}
else
{
possibleExits.Remove(possibleExit);
}
}
throw new Exception("Could not place a valid exit.");
}
public override IEnumerable <MazeTransformationStep> InitializeMaze()
{
downright = new MazeCoordinate(CurrentMaze.GetWidth() - 1, 0);
upperleft = new MazeCoordinate(0, CurrentMaze.GetHeight() - 1);
CurrentMaze.OverrideAllMazeFields(MazeFieldType.Wall);
return(null);
}