/// <summary>
/// Initializes a new instance of the <see cref="IncrementalEvaluationData"/> class.
/// </summary>
/// <param name="incrementalEvaluationData">The incremental evaluation data container.</param>
public IncrementalEvaluationData(IncrementalEvaluationData incrementalEvaluationData)
{
WhiteMaterial = incrementalEvaluationData.WhiteMaterial;
BlackMaterial = incrementalEvaluationData.BlackMaterial;
Position = incrementalEvaluationData.Position;
Castling = incrementalEvaluationData.Castling;
}
/// <summary>
/// Initializes a new instance of the <see cref="Bitboard"/> class.
/// </summary>
/// <param name="bitboard">The previous bitboard to copy.</param>
public Bitboard(Bitboard bitboard) : this()
{
Hash = bitboard.Hash;
GamePhase = bitboard.GamePhase;
ReversibleMoves = bitboard.ReversibleMoves;
Buffer.BlockCopy(bitboard.Pieces, 0, Pieces, 0, bitboard.Pieces.Length * sizeof(ulong));
Buffer.BlockCopy(bitboard.CastlingPossibility, 0, CastlingPossibility, 0, bitboard.CastlingPossibility.Length * sizeof(bool));
Buffer.BlockCopy(bitboard.CastlingDone, 0, CastlingDone, 0, bitboard.CastlingDone.Length * sizeof(bool));
Buffer.BlockCopy(bitboard.Occupancy, 0, Occupancy, 0, bitboard.Occupancy.Length * sizeof(ulong));
Buffer.BlockCopy(bitboard.EnPassant, 0, EnPassant, 0, bitboard.EnPassant.Length * sizeof(ulong));
Buffer.BlockCopy(bitboard.History, 0, History, 0, bitboard.History.Length * sizeof(ulong));
IncEvaluation = new IncrementalEvaluationData(bitboard.IncEvaluation);
CalculateGamePhase();
}
/// <summary>
/// Initializes a new instance of the <see cref="Bitboard"/> class.
/// </summary>
/// <param name="friendlyBoard">The friendly board.</param>
public Bitboard(FriendlyBoard friendlyBoard) : this()
{
Pieces = friendlyBoard.GetPiecesArray();
CastlingPossibility = friendlyBoard.GetCastlingPossibilityArray();
CastlingDone = friendlyBoard.GetCastlingDoneArray();
EnPassant = friendlyBoard.GetEnPassantArray();
Occupancy = CalculateOccupancy();
Calculate(GeneratorMode.CalculateAttacks, false);
IncEvaluation = new IncrementalEvaluationData(GetDetailedEvaluation());
ClearCalculatedData();
Hash = GetNewHash();
CalculateGamePhase();
var random64 = new Random64();
for (var i = 0; i < History.Length; i++)
{
History[i] = random64.Next();
}
}
private void CalculateGamePhase()
{
GamePhase updatedGamePhase;
if (IncEvaluation.WhiteMaterial - MaterialValues.PieceValues[(int)PieceType.King] < 1500 ||
IncEvaluation.BlackMaterial - MaterialValues.PieceValues[(int)PieceType.King] < 1500)
{
updatedGamePhase = GamePhase.End;
}
else
{
updatedGamePhase = GamePhase.Regular;
}
if (GamePhase != updatedGamePhase)
{
GamePhase = updatedGamePhase;
Calculate(GeneratorMode.CalculateAttacks, false);
IncEvaluation = new IncrementalEvaluationData(GetDetailedEvaluation());
ClearCalculatedData();
}
}