public bool CheckMoveForCheck(Move move)
{
//var newBoard = Copy();
var from = GetPiece(move.From.X, move.From.Y);
var fromMoved = from != null ? from.HasMoved : false;
var from2 = default(IPiece);
var from2Moved = default(bool);
if (move.From2 != null)
{
from2 = GetPiece(move.From2.X, move.From2.Y);
from2Moved = from2 != null ? from2.HasMoved : false;
}
var to = GetPiece(move.To.X, move.To.Y);
var toMoved = to != null ? to.HasMoved : false;
var to2 = default(IPiece);
var to2Moved = default(bool);
if(move.To2 != null)
{
to2 = GetPiece(move.To2.X, move.To2.Y);
to2Moved = to2 != null ? to2.HasMoved : false;
}
var currentPlayer = PlayerTurn;
MovePiece(move);
var result = PlayerHasCheck(currentPlayer);
PlayerTurn = currentPlayer;
if(from != null) from.HasMoved = fromMoved;
if(from2 != null)from2.HasMoved = from2Moved;
if(to != null)to.HasMoved = toMoved;
if(to2 != null)to2.HasMoved = to2Moved;
SetPiece(move.From.X, move.From.Y, from);
if(move.From2 != null)
SetPiece(move.From2.X, move.From2.Y, from2);
SetPiece(move.To.X, move.To.Y, to);
if(move.To2 != null)
SetPiece(move.To2.X, move.To2.Y, to2);
return result;
}
public TreeNode(Move move, Double score)
{
Score = score;
Move = move;
}
protected MoveResult TryAttackAlongSlope(Board board, Move slope)
{
var curX = slope.From.X;
var curY = slope.From.Y;
var result = default(MoveResult);
do
{
curX += slope.To.X;
curY += slope.To.Y;
result = TryAttackSquare(board, new Move(slope.From, new Coordinate(curX, curY)));
} while (result.Type == MoveResultType.Move);
return result;
}
protected MoveResult TryMoveToSquare(Board board, List<Move> possibleMoves, Move move, MoveType moveType)
{
if (move.To.IsValid)
{
var targetPiece = board.GetPiece(move.To.X, move.To.Y);
if (moveType != MoveType.MustAttack && targetPiece == null)
{
if(!board.CheckMoveForCheck(move))
{
possibleMoves.Add(move);
}
return new MoveResult() { Type = MoveResultType.Move };
}
else if(moveType != MoveType.CannotAttack && targetPiece != null && targetPiece.Player != Player)
{
if(!board.CheckMoveForCheck(move))
{
possibleMoves.Add(move);
}
return new MoveResult() { Type = MoveResultType.Attack, CapturedPiece = targetPiece };
}
}
return new MoveResult() { Type = MoveResultType.Invalid };
}
protected void TryMoveAlongSlope(Board board, List<Move> possibleMoves, Move slope)
{
var curX = slope.From.X;
var curY = slope.From.Y;
do
{
curX += slope.To.X;
curY += slope.To.Y;
} while (TryMoveToSquare(board, possibleMoves, new Move(slope.From, new Coordinate(curX, curY)), MoveType.CanAttack).Type == MoveResultType.Move);
}
protected MoveResult TryAttackSquare(Board board, Move move)
{
if (move.To.IsValid)
{
var targetPiece = board.GetPiece(move.To.X, move.To.Y);
if(targetPiece != null)
{
if(targetPiece.Player != Player)
{
return new MoveResult() { Type = MoveResultType.Attack, CapturedPiece = targetPiece };
}
}
else
{
return new MoveResult() { Type = MoveResultType.Move };
}
}
return new MoveResult() { Type = MoveResultType.Invalid };
}
private void MovePiece(Move mv)
{
var movedpiece = GetPiece(mv.From.X, mv.From.Y);
var capturedPiece = GetPiece(mv.To.X, mv.To.Y);
if(capturedPiece != null)
{
if(capturedPiece.PieceType == PieceType.King)
{
throw new System.Exception("Cannot capture the king.");
}
if(capturedPiece.Player == Player.Dark)
_darkPieces.Remove(capturedPiece);
else
_lightPieces.Remove(capturedPiece);
}
if(movedpiece != null)
{
movedpiece.HasMoved = true;
}
SetPiece(mv.To.X, mv.To.Y, movedpiece);
SetPiece(mv.From.X, mv.From.Y, null);
PlayerTurn = OpposingPlayer();
}
public void MakeMove(Move mv)
{
MovePiece(mv);
}