/// <summary>
/// Initializes a new instance of the <see cref="Piece"/> class.
/// </summary>
/// <param name="name">
/// The piece name e.g. bishop, queen.
/// </param>
/// <param name="player">
/// The player that owns the piece.
/// </param>
/// <param name="file">
/// Board file that the piece starts on.
/// </param>
/// <param name="rank">
/// Board rank that the piece starts on.
/// </param>
/// <param name="identifier">
/// Piece identifier.
/// </param>
public Piece(PieceNames name, Player player, int file, int rank, PieceIdentifierCodes identifier)
{
this.LastMoveTurnNo = -1;
this.IsInPlay = true;
Square square = Board.GetSquare(file, rank);
this.Player = player;
this.StartLocation = this.Square = square;
square.Piece = this;
this.IdentifierCode = identifier;
switch (name)
{
case PieceNames.Pawn:
this.Top = new PiecePawn(this);
break;
case PieceNames.Bishop:
this.Top = new PieceBishop(this);
break;
case PieceNames.Knight:
this.Top = new PieceKnight(this);
break;
case PieceNames.Rook:
this.Top = new PieceRook(this);
break;
case PieceNames.Queen:
this.Top = new PieceQueen(this);
break;
case PieceNames.King:
this.Top = new PieceKing(this);
break;
}
}
/// <summary>
/// Promote a pawn (change its top to a queen or knight).
/// </summary>
/// <param name="name">
/// Name of piece to change the pawn into.
/// </param>
/// <exception cref="ApplicationException">
/// Indicates failure to promote the piece.
/// </exception>
public void Promote(PieceNames name)
{
if (this.HasBeenPromoted)
{
throw new ApplicationException("Piece has already been promoted!");
}
if (this.Name != PieceNames.Pawn)
{
throw new ApplicationException("Attempt to promote piece that is not a pawn");
}
switch (name)
{
case PieceNames.Bishop:
this.Top = new PieceBishop(this);
break;
case PieceNames.Knight:
this.Top = new PieceKnight(this);
break;
case PieceNames.Rook:
this.Top = new PieceRook(this);
break;
case PieceNames.Queen:
this.Top = new PieceQueen(this);
break;
default:
throw new ApplicationException("Can only promote pawn to either Bishop, Knight, Rook or Queen");
}
this.Player.DecreasePawnCount();
this.Player.IncreaseMaterialCount();
this.HasBeenPromoted = true;
}
/// <summary>
/// Initializes a new instance of the <see cref="Piece"/> class.
/// </summary>
/// <param name="name">
/// The piece name e.g. bishop, queen.
/// </param>
/// <param name="player">
/// The player that owns the piece.
/// </param>
/// <param name="file">
/// Board file that the piece starts on.
/// </param>
/// <param name="rank">
/// Board rank that the piece starts on.
/// </param>
/// <param name="identifier">
/// Piece identifier.
/// </param>
public Piece(PieceNames name, Player player, int file, int rank, PieceIdentifierCodes identifier)
{
this.LastMoveTurnNo = -1;
this.IsInPlay = true;
Square square = Board.GetSquare(file, rank);
this.Player = player;
this.StartLocation = this.Square = square;
square.Piece = this;
this.IdentifierCode = identifier;
switch (name)
{
case PieceNames.Pawn:
this.Top = new PiecePawn(this);
break;
case PieceNames.Bishop:
this.Top = new PieceBishop(this);
break;
case PieceNames.Knight:
this.Top = new PieceKnight(this);
break;
case PieceNames.Rook:
this.Top = new PieceRook(this);
break;
case PieceNames.Queen:
this.Top = new PieceQueen(this);
break;
case PieceNames.King:
this.Top = new PieceKing(this);
break;
}
}
static public bool DoesLeaperPieceTypeAttackSquare(Square square, Player player, PieceNames pieceName, int[] vector, out Piece attackingPiece)
{
Piece piece;
attackingPiece = null;
for (int i = 0; i < vector.Length; i++)
{
piece = Board.GetPiece(square.Ordinal + vector[i]);
if (piece != null && piece.Name == pieceName && piece.Player.Colour == player.Colour)
{
attackingPiece = piece;
return(true);
}
}
return(false);
}
/// <summary>
/// Promote a pawn (change its top to a queen or knight).
/// </summary>
/// <param name="name">
/// Name of piece to change the pawn into.
/// </param>
/// <exception cref="ApplicationException">
/// Indicates failure to promote the piece.
/// </exception>
public void Promote(PieceNames name)
{
if (this.HasBeenPromoted)
{
throw new ApplicationException("Piece has already been promoted!");
}
if (this.Name != PieceNames.Pawn)
{
throw new ApplicationException("Attempt to promote piece that is not a pawn");
}
switch (name)
{
case PieceNames.Bishop:
this.Top = new PieceBishop(this);
break;
case PieceNames.Knight:
this.Top = new PieceKnight(this);
break;
case PieceNames.Rook:
this.Top = new PieceRook(this);
break;
case PieceNames.Queen:
this.Top = new PieceQueen(this);
break;
default:
throw new ApplicationException("Can only promote pawn to either Bishop, Knight, Rook or Queen");
}
this.Player.DecreasePawnCount();
this.Player.IncreaseMaterialCount();
this.HasBeenPromoted = true;
}
public static bool DoesLeaperPieceTypeAttackSquare(Square square, Player player, PieceNames pieceName, int[] vector, out Piece attackingPiece)
{
Piece piece;
attackingPiece = null;
for (int i = 0; i < vector.Length; i++)
{
piece = Board.GetPiece(square.Ordinal + vector[i]);
if (piece != null && piece.Name == pieceName && piece.Player.Colour == player.Colour)
{
attackingPiece = piece;
return true;
}
}
return false;
}
