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馃К Improve move generation: hardcode castling moves and a few calculated variables #541

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merged 3 commits into from
Dec 21, 2023
Merged

馃К Improve move generation: hardcode castling moves and a few calculated variables #541

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7107593
Hardcode castling moves instead of generating them
eduherminio Dec 21, 2023
a9a855a
Formatting
eduherminio Dec 21, 2023
98e756b
Fix tests
eduherminio Dec 21, 2023
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10 changes: 6 additions & 4 deletions src/Lynx.Dev/Program.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -400,9 +400,12 @@ static void _23_Castling_Moves()
var position = new Position("rn2k2r/pppppppp/8/8/8/8/PPPPPPPP/RN2K2R w KQkq - 0 1");
position.Print();

var moves = MoveGenerator.GenerateCastlingMovesForReference(position, Utils.PieceOffset(position.Side)).ToList();
int index = 0;
var moves = new Move[Constants.MaxNumberOfPossibleMovesInAPosition];

foreach (var move in moves)
MoveGenerator.GenerateCastlingMoves(ref index, moves, position);

foreach (var move in moves[..index])
{
Console.WriteLine(move);
}
Expand Down Expand Up @@ -689,7 +692,7 @@ static void ZobristTable()
var pos = new Position(KillerPosition);
var zobristTable = InitializeZobristTable();
var hash = CalculatePositionHash(zobristTable, pos);
var updatedHash = UpdatePositionHash(zobristTable, hash, MoveGenerator.GenerateAllMoves(pos).First());
var updatedHash = UpdatePositionHash(zobristTable, hash, MoveGenerator.GenerateAllMoves(pos)[0]);

Console.WriteLine(updatedHash);
}
Expand Down Expand Up @@ -1098,7 +1101,6 @@ static void TestMoveGen(string fen)
Console.WriteLine($"Position\t{newPosition.FEN()}, Zobrist key {newPosition.UniqueIdentifier}");
Console.WriteLine($"Position\t{position.FEN()}, Zobrist key {position.UniqueIdentifier}");


Console.WriteLine($"Unmaking {move.ToEPDString()} in\t{position.FEN()}");

//position.UnmakeMove(move, savedState);
Expand Down