/// <summary>
/// Creates an <see cref="OrientedlLine"/> by combining two symmetrical
/// <see cref="DirectionalLine"/> s related to the
/// <paramref name="orientation"/>. For more information, see <see cref="DirectionalLine.FromBoard(Board, int, int, Piece, Directions, int, int)"/>.
/// </summary>
/// <param name="board">the <see cref="Board"/> to be used</param>
/// <param name="x">the starting <see cref="Tile.X"/></param>
/// <param name="y">the starting <see cref="Tile.Y"/></param>
/// <param name="piece">
/// the <see cref="Logic.Piece"/> that will determine <see cref="GetSameTiles()"/>
/// </param>
/// <param name="orientation">the <see cref="Orientations"/> to traverse</param>
/// <param name="maxTile">the max number of <see cref="Tile"/> to traverse</param>
/// <param name="blankTolerance">
/// the max number of <see cref="Pieces.None"/> tiles before the traversing stops
/// </param>
/// <returns>a <see cref="OrientedlLine"/></returns>
public static OrientedlLine FromBoard(
Board board,
int x,
int y,
Piece type,
Orientations orientation,
int maxTile,
int blankTolerance)
{
if (board is null)
{
throw new ArgumentNullException(nameof(board));
}
if (x < 0 || x > board.Width)
{
throw new ArgumentException("Value is out of range", nameof(x));
}
if (y < 0 || y > board.Height)
{
throw new ArgumentException("Value is out of range", nameof(y));
}
if (maxTile < 0)
{
throw new ArgumentException(nameof(maxTile));
}
if (blankTolerance < 0)
{
throw new ArgumentException(nameof(blankTolerance));
}
return(orientation switch
{
Orientations.Horizontal => new OrientedlLine(
type,
orientation,
DirectionalLine.FromBoard(board, x, y, type, Directions.Left, maxTile, blankTolerance),
DirectionalLine.FromBoard(board, x, y, type, Directions.Right, maxTile, blankTolerance)),
Orientations.Vertical => new OrientedlLine(
type,
orientation,
DirectionalLine.FromBoard(board, x, y, type, Directions.Up, maxTile, blankTolerance),
DirectionalLine.FromBoard(board, x, y, type, Directions.Down, maxTile, blankTolerance)),
Orientations.Diagonal => new OrientedlLine(
type,
orientation,
DirectionalLine.FromBoard(board, x, y, type, Directions.UpLeft, maxTile, blankTolerance),
DirectionalLine.FromBoard(board, x, y, type, Directions.DownRight, maxTile, blankTolerance)),
Orientations.RvDiagonal => new OrientedlLine(
type,
orientation,
DirectionalLine.FromBoard(board, x, y, type, Directions.UpRight, maxTile, blankTolerance),
DirectionalLine.FromBoard(board, x, y, type, Directions.DownLeft, maxTile, blankTolerance)),
_ => throw new InvalidOperationException("Unexpected value"),
});
private OrientedlLine(
Piece piece,
Orientations orientation,
DirectionalLine firstLine,
DirectionalLine secondLine)
{
Piece = piece;
Orientation = orientation;
FirstLine = firstLine;
SecondLine = secondLine;
Lines = ImmutableArray.Create(firstLine, secondLine);
BlankTilesCount = firstLine.BlankTiles.Length + secondLine.BlankTiles.Length;
BlockTilesCount = firstLine.BlockTiles.Length + secondLine.BlockTiles.Length;
SameTileCount = firstLine.SameTiles.Length + secondLine.SameTiles.Length;
TilesCount = firstLine.Tiles.Length + secondLine.Tiles.Length;
IsChained = firstLine.IsChained && secondLine.IsChained;
}
