private void InsertNewPiece(Piece piece, ChessPosition chessPosition)
{
ChessBoard.PutPiece(piece, chessPosition.ToPosition());
OutOfGamePieces.Remove(piece);
InGamePieces.Add(piece);
}
private void RemovePiece(ChessPosition chessPosition, Piece piece)
{
RemovePiece(chessPosition);
InGamePieces.Remove(piece);
OutOfGamePieces.Add(piece);
}
private void UndoMovement(ChessPosition origin, ChessPosition target, Piece removedPiece)
{
var oldOriginPiece = ChessBoard.GetPiece(target.ToPosition());
RemovePiece(target);
InsertPiece(oldOriginPiece, origin);
oldOriginPiece.DecrementMovement();
if (removedPiece != null)
{
InsertNewPiece(removedPiece, target);
}
}
public void ExecuteMovement(ChessPosition origin, ChessPosition target)
{
var originPiece = ChessBoard.GetPiece(origin.ToPosition());
if (originPiece.IsPossibleMovement(target.ToPosition()))
{
RemovePiece(origin);
var currentTargetPiece = ChessBoard.GetPiece(target.ToPosition());
if (currentTargetPiece != null)
{
RemovePiece(target, currentTargetPiece);
}
InsertPiece(originPiece, target);
// Verify if the player CHECKED himself or if the player already is on CHECK
if (IsInCheck(GetKing(CurrentPlayer)))
{
UndoMovement(origin, target, currentTargetPiece);
if (Check)
{
throw new ChessMatchException("You are on CHECK!");
}
else
{
throw new ChessMatchException("You can't CHECK yourself");
}
}
// Verify if the player CHECKED the adversary
Check = IsInCheck(GetKing(Adversary(CurrentPlayer)));
// Verify if the player CHECKMATE the adversary
if (Check)
{
if (IsInCheckMate(GetKing(Adversary(CurrentPlayer))))
{
Finished = true;
FinishedAt = DateTime.Now;
}
}
NextTurn(originPiece);
}
else
{
throw new ChessMatchException("This piece can't make this movement");
}
}
public void CheckOriginPosition(ChessPosition origin)
{
if (ChessBoard.PieceExists(origin.ToPosition()))
{
if (!ChessBoard.GetPiece(origin.ToPosition()).Color.Equals(CurrentPlayer))
{
throw new ChessMatchException("You can only movement your pieces");
}
}
else
{
throw new ChessBoardException("Not exist a piece in this position");
}
}
private void RemovePiece(ChessPosition chessPosition)
{
ChessBoard.RemovePiece(chessPosition.ToPosition());
}
private void InsertPiece(Piece piece, ChessPosition chessPosition)
{
ChessBoard.PutPiece(piece, chessPosition.ToPosition());
}
public void CheckTargetPosition(ChessPosition target)
{
ChessBoard.ValidPosition(target.ToPosition());
}