public void Clear()
{
LastMove = Move.EmptyMove;
NonPawnMaterial.Clear();
PawnStructureKey = Key = 0ul;
PliesFromNull = Repetition = 0;
CastlelingRights = CastlelingRights.None;
EnPassantSquare = Square.None;
CheckedSquares.Fill(BitBoard.Empty);
Pinners.Fill(BitBoard.Empty);
BlockersForKing.Fill(BitBoard.Empty);
CapturedPiece = Piece.EmptyPiece;
Previous = null;
}
public bool Equals(State other)
{
if (ReferenceEquals(null, other))
{
return(false);
}
// if (ReferenceEquals(this, other)) return true;
return(LastMove.Equals(other.LastMove) &&
Key.Equals(other.Key) &&
PawnStructureKey.Equals(other.PawnStructureKey) &&
EnPassantSquare.Equals(other.EnPassantSquare) &&
CastlelingRights == other.CastlelingRights &&
NonPawnMaterial.First() == other.NonPawnMaterial.First() &&
NonPawnMaterial.Last() == other.NonPawnMaterial.Last() &&
PliesFromNull == other.PliesFromNull &&
Rule50 == other.Rule50 &&
Pinners.Equals(other.Pinners) &&
Checkers.Equals(other.Checkers) &&
CapturedPiece == other.CapturedPiece &&
Equals(Previous, other.Previous));
}