// tag::createBoard[]
public Board CreateBoard(Square[,] grid)
{
Debug.Assert(grid != null);
Board board = new Board(grid);
int width = board.Width;
int height = board.Height;
for (int x = 0; x < width; x++)
{
for (int y = 0; y < height; y++)
{
Square square = grid[x, y];
foreach (Direction dir in Direction.Values)
{
int dirX = (width + x + dir.DeltaX) % width;
int dirY = (height + y + dir.DeltaY) % height;
Square neighbour = grid[dirX, dirY];
square.Link(neighbour, dir);
}
}
}
return board;
}
public void link(Square neighbour, Direction dir)
{
}
public Board(Square[,] grid)
{
}