public virtual void Move(NormalMove m)
{
if (m.Capture!=null)
Board.RemovePiece(m.To,m.Capture);
Board.RemovePiece(m.From, this);
Board.SetPiece(m.To,this);
Moves.Add(m);
}
public virtual NormalMove IsLegalMove(NormalMove normalMove, int ply)
{
foreach (var m in CalculateAllMoves(ply))
{
if (normalMove == m)
return m;
}
return null;
}
public virtual void UndoMove(NormalMove m)
{
Board.RemovePiece(m.To, this);
if (m.Capture != null)
{
Board.SetPiece(m.To,m.Capture);
}
Board.SetPiece(m.From,this);
Moves.Remove(m);
undoedMoves.Add(m);
}
public override void Move(NormalMove m)
{
var enpassant = m as EnPassantMove;
if (enpassant != null)
{
Moves.Add(m);
Board.SetPiece(m.To,m.Piece);
Board.RemovePiece(m.From,m.Piece);
Board.RemovePiece(m.Capture.Square,m.Capture);
}
else
base.Move(m);
}
public int Perft(int depth,Color color, NormalMove lastmove=null)
{
if (depth == 0)
{
Log.Debug($"Came from {lastmove}");
return 0;
}
var clock = new Stopwatch();
clock.Start();
var allValidMoves = _board.GetAllMovesFor(color,depth).ToList();
var subMoves = 0;
foreach (var move in allValidMoves)
{
move.Do();
subMoves+=Perft(depth-1,ColorHelper.Reverse(color),move);
move.Undo();
}
clock.Stop();
if (depth>4)
Log.Info($"Depth {depth} took {clock.ElapsedMilliseconds}. Looked at {lastmove} {allValidMoves.Count} moves, which resulted in {subMoves} submoves");
return allValidMoves.Count+subMoves;
}
public override void UndoMove(NormalMove m)
{
var castling = m as CastlingMove;
if (castling != null)
{
UndoCastle(castling);
}
else
base.UndoMove(m);
}
// Supposed to check for checks and other stuff.
private NormalMove IsLegalMove(NormalMove normalMove)
{
// uh-oh
var correctMove = normalMove.Piece.IsLegalMove(normalMove,_currentPly);
if (normalMove.Piece.Color==ToMove && correctMove!=null)
return correctMove;
return null;
}