private static EMoveAmbiguity Ambiguity(this Move move, BitBoard similarTypeAttacks, IPosition position)
{
var ambiguity = EMoveAmbiguity.None;
foreach (var square in similarTypeAttacks)
{
var pinned = position.GetPinnedPieces(square, move.GetMovingSide());
if (similarTypeAttacks & pinned)
{
continue;
}
if (move.GetMovingPieceType() != position.GetPieceType(square))
{
continue;
}
if (position.OccupiedBySide[move.GetMovingSide().Side] & square)
{
if (square.File() == move.GetFromSquare().File())
{
ambiguity |= EMoveAmbiguity.File;
}
else if (square.Rank() == move.GetFromSquare().Rank())
{
ambiguity |= EMoveAmbiguity.Rank;
}
ambiguity |= EMoveAmbiguity.Move;
}
}
return(ambiguity);
}
private static BitBoard GetSimilarAttacks(this IPosition position, Move move)
{
var pt = move.GetMovingPieceType();
return(pt == EPieceType.Pawn || pt == EPieceType.King
? BitBoards.ZeroBb
: move.GetToSquare().GetAttacks(pt, position.Pieces()) ^ move.GetFromSquare());
}
private static string ToRan(Move move, IPosition pos)
{
var from = move.GetFromSquare();
var to = move.GetToSquare();
var notation = new StringBuilder(12);
if (move.IsCastlelingMove())
{
notation.Append(ECastlelingExtensions.GetCastlelingString(to, from));
}
else
{
var pt = move.GetMovingPieceType();
if (pt != EPieceType.Pawn)
{
notation.Append(pt.GetPieceChar());
}
notation.Append(from.ToString());
if (move.IsEnPassantMove())
{
notation.Append("ep");
notation.Append(from.FileChar());
}
else if (move.IsCaptureMove())
{
if (pt == EPieceType.Pawn)
{
notation.Append(from.FileChar());
}
notation.Append('x');
notation.Append(move.GetCapturedPiece().Type().GetPieceChar());
}
else
{
notation.Append('-');
}
notation.Append(to.ToString());
if (move.IsPromotionMove())
{
notation.Append('=');
notation.Append(move.GetPromotedPiece().GetUnicodeChar());
}
}
if (pos.InCheck)
{
notation.Append(pos.GetCheckChar());
}
return(notation.ToString());
}
public static (bool, Move) Locate(this Move move, IPosition pos)
{
// force position to contain the latest moves for the position moves to be searched in
var moveList = pos.GenerateMoves();
var element = moveList.GetMove(move.GetFromSquare(), move.GetToSquare());
return(element == null ? (false, EmptyMove) : (true, element));
}
public static (bool, Move) Locate(this Move move, IPosition pos)
{
// force position to contain the latest moves for the position moves to be searched in
var mg = new MoveGenerator(pos);
mg.GenerateMoves();
var element = mg.Moves.FirstOrDefault(x => x.GetFromSquare() == move.GetFromSquare() && x.GetToSquare() == move.GetToSquare());
return(element == null ? (false, EmptyMove) : (true, element));
}
private static string ToSan(this Move move, MoveGenerator moveGenerator)
{
var from = move.GetFromSquare();
var to = move.GetToSquare();
var notation = new StringBuilder(12);
if (move.IsCastlelingMove())
{
notation.Append(ECastlelingExtensions.GetCastlelingString(to, from));
}
else
{
var pt = move.GetMovingPieceType();
if (pt != EPieceType.Pawn)
{
notation.Append(move.GetMovingPiece().GetPgnChar());
move.Disambiguation(from, moveGenerator.Position, notation);
}
if (move.IsEnPassantMove())
{
notation.Append("ep");
notation.Append(from.FileChar());
}
else if (move.IsCaptureMove())
{
if (pt == EPieceType.Pawn)
{
notation.Append(from.FileChar());
}
notation.Append('x');
}
notation.Append(to.ToString());
if (move.IsPromotionMove())
{
notation.Append('=');
notation.Append(move.GetPromotedPiece().GetPgnChar());
}
}
if (moveGenerator.InCheck)
{
notation.Append(moveGenerator.GetCheckChar());
}
return(notation.ToString());
}
public static (bool, Move) Locate(this Move move, Game game)
{
// force position to contain the latest moves for the position moves to be searched in
game.State.GenerateMoves();
var element = game.State.Moves.FirstOrDefault(x => x.GetFromSquare() == move.GetFromSquare() && x.GetToSquare() == move.GetToSquare());
return(element == null ? (false, EmptyMove) : (true, element));
//for (int i = 0; i < game.State.Moves.Count; i++) {
// if (move.GetFromSquare() == game.State.Moves[i].GetFromSquare() && move.GetToSquare() == game.State.Moves[i].GetToSquare())
// return (true, game.State.Moves[i]);
//}
//return (false, EmptyMove);
}
