private GameState GetNewGameState(GameState gameState, int piecePosition, StateInfo stateInfo, int newPiecePosition)
{
var transitionGameState = manageSquares(gameState, stateInfo, piecePosition, newPiecePosition);
if (stateInfo.IsCastle)
{
var rookPositions = CastlingEngine.GetRookPositionsForCastle(gameState.ActiveColor, piecePosition, newPiecePosition);
transitionGameState = manageSquares(transitionGameState, stateInfo, rookPositions.RookPos, rookPositions.NewRookPos);
}
if (stateInfo.IsEnPassant)
{
//remove the attacked pawn
var enPassantAttackedPawnPosition = gameState.ActiveColor == Color.White ? newPiecePosition - 8 : newPiecePosition + 8;
var enPassantAttackedPawnSquare = transitionGameState.Squares.GetSquare(enPassantAttackedPawnPosition);
enPassantAttackedPawnSquare.Piece = null;
}
_notationService.SetGameStateSnapshot(gameState, transitionGameState, stateInfo, piecePosition, newPiecePosition);
var fenRecords = gameState.History.DeepCopy();
var previousStateFEN = gameState.ToString();
fenRecords.Add(FenFactory.Create(previousStateFEN));
transitionGameState.History = fenRecords;
return(transitionGameState);
}
public OperationResult <GameState> Initialize(string fen)
{
if (string.IsNullOrEmpty(fen))
{
fen = GeneralReference.Starting_FEN_Position;
}
var fenRecord = FenFactory.Create(fen);
if (fenRecord == null)
{
OperationResult <GameState> .Fail("Bad fen.");
}
return(hydrateGameState(new GameState(fenRecord)));
}
public override string ToString()
{
return(FenFactory.Create(this));
}
