private ErrorCondition Move(Move move)
{
if (!BitTranslator.IsValidSquare(move.StartFile, move.StartRank))
{
return(ErrorCondition.InvalidSquare);
}
if (!BitTranslator.IsValidSquare(move.EndFile, move.EndRank))
{
return(ErrorCondition.InvalidSquare);
}
ulong startSquare = BitTranslator.TranslateToBit(move.StartFile, move.StartRank);
if ((CurrentTurn & startSquare) == 0)
{
return(ErrorCondition.MustMoveOwnPiece); // Can't move if not your turn
}
ulong endSquare = BitTranslator.TranslateToBit(move.EndFile, move.EndRank);
if ((CurrentTurn & endSquare) != 0)
{
return(ErrorCondition.CantTakeOwnPiece); // Can't end move on own piece
}
ulong allMoves = MoveGenerator.GenerateValidMovesForPiece(CurrentState, startSquare);
if ((endSquare & allMoves) == 0)
{
return(ErrorCondition.InvalidMovement); // End square is not a valid move
}
// The move is good, so update state
// Update current state
UpdateState(move, startSquare, endSquare);
return(ErrorCondition.None);
}
public List <Square> GetValidMoves(char file, int rank)
{
if (!BitTranslator.IsValidSquare(file, rank))
{
throw new InvalidOperationException();
}
var square = BitTranslator.TranslateToBit(file, rank);
ulong allMoves = MoveGenerator.GenerateValidMovesForPiece(CurrentState, square);
return(BitTranslator.TranslateToSquares(allMoves));
}