public bool ValidateMove(ChessBitBoard bitBoard, ChessMove moveToCheck, ChessColor colorOfPlayerMoving)
{
// When playing against an AI opponent, the framework will only call this method
// if the AI didn't declare a stalemate or go over its time. This means we're
// guaranteed to have a move and only need to check for check and stalemate.
// We'll still check for stalemate in case it's a human player though.
if (moveToCheck.Flag == ChessFlag.Stalemate)
{
var allWhiteMoves = new Queue <Move>();
var allBlackMoves = new Queue <Move>();
bitBoard.getAllValidMoves(Team.White, allWhiteMoves);
bitBoard.getAllValidMoves(Team.Black, allBlackMoves);
return(allWhiteMoves.Count == 0 && allBlackMoves.Count == 0);
}
// convert from the frameworks coordinates to cartesian
var srcy = 7 - moveToCheck.From.Y;
var desty = 7 - moveToCheck.To.Y;
var team = colorOfPlayerMoving == ChessColor.White ? Team.White : Team.Black;
var enemyTeam = team == Team.White ? Team.Black : Team.White;
var actualTeam = bitBoard.getPieceTeam(moveToCheck.From.X, srcy);
if (team != actualTeam)
{
return(false);
}
if (!bitBoard.validateMove(moveToCheck.From.X, srcy, moveToCheck.To.X, desty))
{
return(false);
}
bitBoard.move(moveToCheck.From.X, srcy, moveToCheck.To.X, desty);
if (bitBoard.lastMove().causesCheck)
{
var allEnemyMoves = new Queue <Move>();
bitBoard.getAllValidMoves(enemyTeam, allEnemyMoves);
if (allEnemyMoves.Count == 0)
{
return(moveToCheck.Flag == ChessFlag.Checkmate);
}
else
{
return(moveToCheck.Flag == ChessFlag.Check);
}
}
return(moveToCheck.Flag == ChessFlag.NoFlag);
}
public bool IsStalemate(ChessBitBoard bitBoard, Queue <Move> allMyMoves, Team enemyTeam)
{
var allEnemyMoves = new Queue <Move>();
if (allMyMoves.Count == 0)
{
bitBoard.getAllValidMoves(enemyTeam, allEnemyMoves);
if (allEnemyMoves.Count == 0)
{
return(true);
}
}
return(false);
}
public ChessFlag GetMoveFlag(ChessBitBoard bitBoard, Move move, Team enemyTeam)
{
var flag = ChessFlag.NoFlag;
var allEnemyMoves = new Queue <Move>();
if (move.causesCheck)
{
bitBoard.move(move.srce.X, move.srce.Y, move.dest.X, move.dest.Y);
bitBoard.getAllValidMoves(enemyTeam, allEnemyMoves);
if (allEnemyMoves.Count == 0)
{
flag = ChessFlag.Checkmate;
}
else
{
flag = ChessFlag.Check;
}
}
return(flag);
}