Exemplo n.º 1
0
        public override BaseChessPiece GetCaptured(Point2D at, ref bool enpassant)
        {
            BaseChessPiece basePiece = base.GetCaptured(at, ref enpassant);

            if (basePiece != null && basePiece.Color != m_Color)
            {
                return(basePiece);                // Normal capture
            }
            if (at.X == m_Position.X)
            {
                return(null);                // Straight movement
            }
            Point2D p = new Point2D(at.X, m_Position.Y);

            basePiece = m_BChessboard[p];

            if (basePiece != null && basePiece.Color != m_Color)
            {
                enpassant = true;
                return(basePiece);
            }
            else
            {
                return(null);
            }
        }
Exemplo n.º 2
0
        public override bool CanMoveTo(Point2D newLocation, ref string err)
        {
            if (!base.CanMoveTo(newLocation, ref err))
            {
                return(false);
            }

            // Care only about absolutes for knights
            int dx = Math.Abs(newLocation.X - m_Position.X);
            int dy = Math.Abs(newLocation.Y - m_Position.Y);

            if (!((dx == 1 && dy == 2) || (dx == 2 && dy == 1)))
            {
                err = "Knights can only make L shaped moves (2-3 tiles length)";
                return(false);                // Wrong move
            }

            // Verify target piece
            BaseChessPiece piece = m_BChessboard[newLocation];

            if (piece == null || piece.Color != m_Color)
            {
                return(true);
            }
            else
            {
                err = "You can't capture pieces of your same color";
                return(false);
            }
        }
Exemplo n.º 3
0
        public override ArrayList GetMoves(bool capture)
        {
            ArrayList moves = new ArrayList();

            for (int dx = -2; dx <= 2; dx++)
            {
                for (int dy = -2; dy <= 2; dy++)
                {
                    if (!((Math.Abs(dx) == 1 && Math.Abs(dy) == 2) || (Math.Abs(dx) == 2 && Math.Abs(dy) == 1)))
                    {
                        continue;
                    }

                    Point2D p = new Point2D(m_Position.X + dx, m_Position.Y + dy);

                    if (!m_BChessboard.IsValid(p))
                    {
                        continue;
                    }

                    BaseChessPiece piece = m_BChessboard[p];

                    if (piece == null)
                    {
                        moves.Add(p);
                    }
                    else if (capture && piece.Color != m_Color)
                    {
                        moves.Add(p);
                    }
                }
            }

            return(moves);
        }
Exemplo n.º 4
0
		/// <summary>
		/// Creates a new Move object without capturing a piece
		/// </summary>
		/// <param name="piece">The chess piece performing the move</param>
		/// <param name="target">The target location of the move</param>
		public Move( BaseChessPiece piece, Point2D target )
		{
			m_Piece = piece;
			m_From = m_Piece.Position;
			m_To = target;
			m_Captured = m_Piece.GetCaptured( target, ref m_EnPassant );
		}
Exemplo n.º 5
0
        /// <summary>
        /// Callback for selecting the piece to move
        /// </summary>
        public void OnPickPieceTarget(Mobile from, object targeted)
        {
            m_Black.CloseGump(typeof(EndGameGump));
            m_White.CloseGump(typeof(EndGameGump));

            if (!(targeted is IPoint2D))
            {
                from.SendMessage(0x40, "Invalid selection");
                SendMoveTarget(from);
                return;
            }

            BaseChessPiece piece = m_Board[m_Board.WorldToBoard(new Point2D(targeted as IPoint2D))];

            if (piece == null || piece.Color != GetColor(from))
            {
                from.SendMessage(0x40, "Invalid selection");
                SendMoveTarget(from);
                return;
            }

            m_MovingPiece = piece;
            from.Target   = new ChessTarget(this, from, "Where do you wish to move?",
                                            OnPieceMove);
        }
Exemplo n.º 6
0
 /// <summary>
 /// Creates a new Move object without capturing a piece
 /// </summary>
 /// <param name="piece">The chess piece performing the move</param>
 /// <param name="target">The target location of the move</param>
 public Move(BaseChessPiece piece, Point2D target)
 {
     m_Piece    = piece;
     m_From     = m_Piece.Position;
     m_To       = target;
     m_Captured = m_Piece.GetCaptured(target, ref m_EnPassant);
 }
Exemplo n.º 7
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        public override ArrayList GetMoves(bool capture)
        {
            ArrayList moves = new ArrayList();

            for (int dx = -1; dx <= 1; dx++)
            {
                for (int dy = -1; dy <= 1; dy++)
                {
                    if (dx == 0 && dy == 0)
                    {
                        continue;                         // Can't move to same spot
                    }
                    Point2D p = new Point2D(m_Position.X + dx, m_Position.Y + dy);

                    if (!m_BChessboard.IsValid(p))
                    {
                        continue;
                    }

                    BaseChessPiece piece = m_BChessboard[p];

                    if (piece == null)
                    {
                        moves.Add(p);
                    }
                    else if (capture && piece.Color != m_Color)
                    {
                        moves.Add(p);
                    }
                }
            }

            return(moves);
        }
Exemplo n.º 8
0
        /// <summary>
        /// Tries to perfrom a move. Will send any diagnostic messages to user if failed.
        /// Will perform the move if it's valid.
        /// </summary>
        /// <param name="err">This string will hold any error messages if the move fails</param>
        /// <param name="piece">The piece being moved</param>
        /// <param name="to">The world location of the move target</param>
        /// <returns>True if the move is legal</returns>
        public bool TryMove(ref string err, BaseChessPiece piece, Point2D to)
        {
            Point2D p2 = WorldToBoard(to);

            if (piece == null)
            {
                err = "You must select a piece for your move";
                return(false);
            }

            if (!piece.CanMoveTo(p2, ref err))
            {
                return(false);                // Invalid move
            }

            if (piece.IsCastle(p2))
            {
                // This move is making a castle. All needed verification is made by the AllowCastle() function.
                Rook rook = piece as Rook;

                if (rook == null)
                {
                    rook = this[p2] as Rook;
                }

                m_IsMoving = true;
                rook.Castle();
                return(true);
            }

            Move move = new Move(piece, p2);

            ApplyMove(move);

            // bool ok = !IsCheck( piece.Color ) || IsCheckMate( piece.EnemyColor );
            bool ok = !IsCheck(piece.Color);

            UndoMove(move);

            if (ok)
            {
                m_IsMoving = true;
                piece.MoveTo(move);

                foreach (BaseChessPiece pass in m_Table.Values)
                {
                    if (pass != piece)
                    {
                        pass.AllowEnPassantCapture = false;                         // Reset en passant allowance
                    }
                }
            }
            else
            {
                err = "That move would put your king under check";
            }

            return(ok);
        }
Exemplo n.º 9
0
        public ChessMobile(BaseChessPiece piece) : base(AIType.AI_Use_Default, FightMode.None, 1, 1, 0.2, 0.2)
        {
            m_WayPoints = new List <WayPoint>();

            InitStats(25, 100, 100);
            m_Piece = piece;

            Blessed   = true;
            Paralyzed = true;
            Direction = m_Piece.Facing;
        }
Exemplo n.º 10
0
		public ChessMobile( BaseChessPiece piece ) : base( AIType.AI_Use_Default, FightMode.None, 1, 1, 0.2, 0.2 )
		{
			m_WayPoints = new ArrayList();

			InitStats( 25, 100, 100 );
			m_Piece = piece;

			Blessed = true;
			Paralyzed = true;
			Direction = m_Piece.Facing;
		}
Exemplo n.º 11
0
        /// <summary>
        /// Verifies if a given player is in check
        /// </summary>
        /// <param name="color">The color being examined</param>
        /// <returns>True if the specified king is checked</returns>
        public bool IsCheck(ChessColor color)
        {
            BaseChessPiece king = GetKing(color);

            if (king == null)
            {
                // This occurs when the game is performing a simulation
                // In this case a potential move kills the king,
                // therefore the king is indeed attacked.
                return(true);
            }

            return(IsAttacked(king.Position, king.EnemyColor));
        }
Exemplo n.º 12
0
        /// <summary>
        /// Callback for the move finalization
        /// </summary>
        public void OnPieceMove(Mobile from, object targeted)
        {
            string err = null;

            if (!(targeted is IPoint2D))
            {
                err           = "Invalid Move";
                m_MovingPiece = null;

                if (GetColor(from) == ChessColor.Black)
                {
                    SendAllGumps(null, err);
                }
                else
                {
                    SendAllGumps(err, null);
                }

                return;
            }

            if (!m_Board.TryMove(ref err, m_MovingPiece, new Point2D(targeted as IPoint2D)))
            {
                m_MovingPiece = null;

                if (GetColor(from) == ChessColor.Black)
                {
                    SendAllGumps(null, err);
                }
                else
                {
                    SendAllGumps(err, null);
                }

                return;
            }

            // Move has been made. Wait until it's over
            if (m_Status == GameStatus.WhiteToMove)
            {
                m_Status = GameStatus.WhiteMoving;
                SendAllGumps("Making your move", null);
            }
            else
            {
                m_Status = GameStatus.BlackMoving;
                SendAllGumps(null, "Making your move");
            }
        }
Exemplo n.º 13
0
 /// <summary>
 /// Verifies if the specified mobile is the owner or a given chess piece
 /// </summary>
 /// <param name="m">The mobile being checked</param>
 /// <param name="piece">The piece being examined for ownership</param>
 /// <returns>True if the mobile is the owner of the specified piece</returns>
 private bool IsOwner(Mobile m, BaseChessPiece piece)
 {
     if (m == m_Black && piece.Color == ChessColor.Black)
     {
         return(true);
     }
     else if (m == m_White && piece.Color == ChessColor.White)
     {
         return(true);
     }
     else
     {
         return(false);
     }
 }
Exemplo n.º 14
0
        /// <summary>
        /// Gets the piece that this piece would capture when moving to a specific location.
        /// This function assumes that the square can be reached.
        /// </summary>
        /// <param name="at">The target location with the potential capture</param>
        /// <param name="enpassant">Will hold a value stating whether this move is made en passant</param>
        /// <returns>A BaseChessPiece if a capture is possible, null otherwise</returns>
        public virtual BaseChessPiece GetCaptured(Point2D at, ref bool enpassant)
        {
            enpassant = false;

            BaseChessPiece piece = m_BChessboard[at];

            if (piece != null && piece.Color != m_Color)
            {
                return(piece);
            }
            else
            {
                return(null);
            }
        }
Exemplo n.º 15
0
        public override bool CanMoveTo(Point2D newLocation, ref string err)
        {
            if (!base.CanMoveTo(newLocation, ref err))
            {
                return(false);
            }

            int dx = newLocation.X - m_Position.X;
            int dy = newLocation.Y - m_Position.Y;

            if (Math.Abs(dx) != Math.Abs(dy))
            {
                err = "Bishops can move only on diagonals";
                return(false);                // Not a diagonal movement
            }

            int xDirection = dx > 0 ? 1 : -1;
            int yDirection = dy > 0 ? 1 : -1;

            if (Math.Abs(dx) > 1)
            {
                // Verify that the path to target is empty
                for (int i = 1; i < Math.Abs(dx); i++)                     // Skip the bishop square and stop before target
                {
                    int xOffset = xDirection * i;
                    int yOffset = yDirection * i;

                    if (m_BChessboard[m_Position.X + xOffset, m_Position.Y + yOffset] != null)
                    {
                        err = "Bishops can't move over other pieces";
                        return(false);
                    }
                }
            }

            // Verify target piece
            BaseChessPiece piece = m_BChessboard[newLocation];

            if (piece == null || piece.Color != m_Color)
            {
                return(true);
            }
            else
            {
                err = "You can't capture pieces of your own color";
                return(false);
            }
        }
Exemplo n.º 16
0
        public override ArrayList GetMoves(bool capture)
        {
            ArrayList moves = new ArrayList();

            int[] xDirection = new int[] { -1, 1, 0, 0 };
            int[] yDirection = new int[] { 0, 0, 1, -1 };

            for (int i = 0; i < 4; i++)
            {
                int xDir = xDirection[i];
                int yDir = yDirection[i];

                int offset = 1;

                while (true)
                {
                    Point2D p = new Point2D(m_Position.X + offset * xDir, m_Position.Y + offset * yDir);

                    if (!m_BChessboard.IsValid(p))
                    {
                        break;
                    }

                    BaseChessPiece piece = m_BChessboard[p];

                    if (piece == null)
                    {
                        moves.Add(p);
                        offset++;
                        continue;
                    }

                    if (capture && piece.Color != m_Color)
                    {
                        moves.Add(p);
                        break;
                    }

                    break;
                }
            }

            return(moves);
        }
Exemplo n.º 17
0
        public override bool CanMoveTo(Point2D newLocation, ref string err)
        {
            if (!base.CanMoveTo(newLocation, ref err))
            {
                return(false);
            }

            // Verify if this is a castle
            BaseChessPiece rook = m_BChessboard[newLocation];

            if (rook is Rook && rook.Color == m_Color)
            {
                // Trying to castle
                return(m_BChessboard.AllowCastle(this, rook, ref err));
            }

            int dx = newLocation.X - m_Position.X;
            int dy = newLocation.Y - m_Position.Y;

            if (Math.Abs(dx) > 1 || Math.Abs(dy) > 1)
            {
                err = "The can king can move only 1 tile at a time";
                return(false);                // King can move only 1 tile away from its position
            }

            // Verify target piece
            BaseChessPiece piece = m_BChessboard[newLocation];

            if (piece == null || piece.Color != m_Color)
            {
                return(true);
            }
            else
            {
                err = "You can't capture pieces of your same color";
                return(false);
            }
        }
Exemplo n.º 18
0
        /// <summary>
        /// A pawn has been promoted and should be changed on the board
        /// </summary>
        /// <param name="pawn">The pawn that has been promoted</param>
        /// <param name="to">The type of piece it should be promoted to</param>
        public void OnPawnPromoted(BaseChessPiece pawn, PawnPromotion to)
        {
            BaseChessPiece promoted = null;

            switch (to)
            {
            case PawnPromotion.Queen:

                promoted = new Queen(this, pawn.Color, pawn.Position);
                break;

            case PawnPromotion.Rook:

                promoted = new Rook(this, pawn.Color, pawn.Position);
                break;

            case PawnPromotion.Knight:

                promoted = new Knight(this, pawn.Color, pawn.Position);
                break;

            case PawnPromotion.Bishop:

                promoted = new Bishop(this, pawn.Color, pawn.Position);
                break;
            }

            if (promoted != null)
            {
                m_Table[pawn.Position] = promoted;

                pawn.Die(false);
            }

            PushGame(pawn.EnemyColor, null);
        }
Exemplo n.º 19
0
        public override bool CanMoveTo(Point2D newLocation, ref string err)
        {
            if (!base.CanMoveTo(newLocation, ref err))
            {
                return(false);
            }

            int dx = newLocation.X - m_Position.X;
            int dy = newLocation.Y - m_Position.Y;

            if (dx == 0 || dy == 0)
            {
                // Straight movement
                if (Math.Abs(dx) > 1)                     // If it's just 1 step no need to check for intermediate pieces
                {
                    int direction = dx > 0 ? 1 : -1;

                    // Moving along X axis
                    for (int i = 1; i < Math.Abs(dx); i++)
                    {
                        int offset = direction * i;

                        if (m_BChessboard[m_Position.X + offset, m_Position.Y] != null)
                        {
                            err = "The queen can't move over other pieces";
                            return(false);
                        }
                    }
                }
                else if (Math.Abs(dy) > 1)
                {
                    // Moving along Y axis
                    int direction = dy > 0 ? 1 : -1;

                    for (int i = 1; i < Math.Abs(dy); i++)
                    {
                        int offset = direction * i;

                        if (m_BChessboard[m_Position.X, m_Position.Y + offset] != null)
                        {
                            err = "The queen can't move over other pieces";
                            return(false);
                        }
                    }
                }
            }
            else
            {
                // Diagonal movement
                if (Math.Abs(dx) != Math.Abs(dy))
                {
                    err = "The queen moves only on straight lines or diagonals";
                    return(false);                    // Uneven
                }

                if (Math.Abs(dx) > 1)
                {
                    int xDirection = dx > 0 ? 1 : -1;
                    int yDirection = dy > 0 ? 1 : -1;

                    for (int i = 1; i < Math.Abs(dx); i++)
                    {
                        int xOffset = xDirection * i;
                        int yOffset = yDirection * i;

                        if (m_BChessboard[m_Position.X + xOffset, m_Position.Y + yOffset] != null)
                        {
                            err = "The queen can't move over other pieces";
                            return(false);
                        }
                    }
                }
            }

            // Verify target piece
            BaseChessPiece piece = m_BChessboard[newLocation];

            if (piece == null || piece.Color != m_Color)
            {
                return(true);
            }
            else
            {
                err = "You can't capture pieces of your same color";
                return(false);
            }
        }
Exemplo n.º 20
0
 /// <summary>
 /// Adds a chess piece to the board table
 /// </summary>
 /// <param name="piece">The piece being added</param>
 private void AddPiece(BaseChessPiece piece)
 {
     m_Table.Add(piece.Position, piece);
 }
Exemplo n.º 21
0
		/// <summary>
		/// Verifies if the specified mobile is the owner or a given chess piece
		/// </summary>
		/// <param name="m">The mobile being checked</param>
		/// <param name="piece">The piece being examined for ownership</param>
		/// <returns>True if the mobile is the owner of the specified piece</returns>
		private bool IsOwner( Mobile m, BaseChessPiece piece )
		{
			if ( m == m_Black && piece.Color == ChessColor.Black )
				return true;
			else if ( m == m_White && piece.Color == ChessColor.White)
				return true;
			else
				return false;
		}
Exemplo n.º 22
0
		/// <summary>
		/// Tries to perfrom a move. Will send any diagnostic messages to user if failed.
		/// Will perform the move if it's valid.
		/// </summary>
		/// <param name="err">This string will hold any error messages if the move fails</param>
		/// <param name="piece">The piece being moved</param>
		/// <param name="to">The world location of the move target</param>
		/// <returns>True if the move is legal</returns>
		public bool TryMove( ref string err, BaseChessPiece piece, Point2D to )
		{
			Point2D p2 = WorldToBoard( to );

			if ( piece == null )
			{
				err = "You must select a piece for your move";
				return false;
			}

			if ( ! piece.CanMoveTo( p2, ref err ) )
			{
				return false; // Invalid move
			}

			if ( piece.IsCastle( p2 ) )
			{
				// This move is making a castle. All needed verification is made by the AllowCastle() function.
				Rook rook = piece as Rook;

				if ( rook == null )
					rook = this[ p2 ] as Rook;

				m_IsMoving = true;
				rook.Castle();
				return true;
			}

			Move move = new Move( piece, p2 );
			ApplyMove( move );

			// bool ok = !IsCheck( piece.Color ) || IsCheckMate( piece.EnemyColor );
			bool ok = !IsCheck( piece.Color );

			UndoMove( move );

			if ( ok )
			{
				m_IsMoving = true;
				piece.MoveTo( move );

				foreach( BaseChessPiece pass in m_Table.Values )
				{
					if ( pass != piece )
						pass.AllowEnPassantCapture = false; // Reset en passant allowance
				}
			}
			else
			{
				err = "That move would put your king under check";
			}

			return ok;
		}
Exemplo n.º 23
0
        /// <summary>
        /// Verifies if the requested castle moved is allowed
        /// </summary>
        /// <param name="king">The King performing the castle</param>
        /// <param name="rook">The Rook</param>
        /// <param name="err">Will hold any error messages</param>
        /// <returns>True if the castle move is allowed</returns>
        public bool AllowCastle(BaseChessPiece king, BaseChessPiece rook, ref string err)
        {
            #region Castle Rules
            // 1 Your king has been moved earlier in the game.
            // 2 The rook that castles has been moved earlier in the game.
            // 3 There are pieces standing between your king and rook.
            // 4 The king is in check.
            // 5 The king moves through a square that is attacked by a piece of the opponent.
            // 6 The king would be in check after castling.
            #endregion

            if (king.HasMoved || rook.HasMoved)
            {
                err = "You can't castle if the rook or king have already moved";
                return(false);                // Rules 1 and 2
            }

            if (IsCheck(king.Color))
            {
                err = "You can't castle if your king is in check";
                return(false);                // Rule 4
            }

            bool queenside = rook.Position.X == 0;

            if (queenside)
            {
                for (int i = 1; i < 4; i++)
                {
                    if (this[i, king.Position.Y] != null)
                    {
                        err = "You can't castle if there are pieces between the king and the rook";
                        return(false);                        // Rule 3 queenside
                    }
                }
            }
            else
            {
                if (this[5, king.Position.Y] != null || this[6, king.Position.Y] != null)
                {
                    err = "You can't castle if there are pieces between the king and the rook";
                    return(false);                    // Rule 3 kingside
                }
            }

            // King always moves 2
            int kingX       = king.Position.X + (queenside ? -2 : 2);
            int kingTransit = king.Position.X + (queenside ? -1 : 1);

            if (IsAttacked(new Point2D(kingTransit, king.Position.Y), king.EnemyColor))
            {
                err = "The king cannot move through a square that is under attack by the opponent";
                return(false);                // Rule 5
            }

            if (IsAttacked(new Point2D(kingX, king.Position.Y), king.EnemyColor))
            {
                err = "The king would be in check after the castle";
                return(false);                // Rule 6
            }

            return(true);
        }
Exemplo n.º 24
0
		/// <summary>
		/// Adds a chess piece to the board table
		/// </summary>
		/// <param name="piece">The piece being added</param>
		private void AddPiece( BaseChessPiece piece )
		{
			m_Table.Add( piece.Position, piece );
		}
Exemplo n.º 25
0
		/// <summary>
		/// Callback for selecting the piece to move
		/// </summary>
		public void OnPickPieceTarget( Mobile from, object targeted )
		{
			m_Black.CloseGump( typeof( EndGameGump ) );
			m_White.CloseGump( typeof( EndGameGump ) );

			if ( ! ( targeted is IPoint2D ) )
			{
				from.SendMessage( 0x40, "Invalid selection" );
				SendMoveTarget( from );
				return;
			}

			BaseChessPiece piece = m_Board[ m_Board.WorldToBoard( new Point2D( targeted as IPoint2D ) ) ];
			
			if ( piece == null || piece.Color != GetColor( from ) )
			{
				from.SendMessage( 0x40, "Invalid selection" );
				SendMoveTarget( from );
				return;
			}

			m_MovingPiece = piece;
			from.Target = new ChessTarget( this, from, "Where do you wish to move?",
				OnPieceMove );
		}
Exemplo n.º 26
0
		/// <summary>
		/// A pawn has been promoted and should be changed on the board
		/// </summary>
		/// <param name="pawn">The pawn that has been promoted</param>
		/// <param name="to">The type of piece it should be promoted to</param>
		public void OnPawnPromoted( BaseChessPiece pawn, PawnPromotion to )
		{
			BaseChessPiece promoted = null;

			switch ( to )
			{
				case PawnPromotion.Queen:

					promoted = new Queen( this, pawn.Color, pawn.Position );
					break;

				case PawnPromotion.Rook:

					promoted = new Rook( this, pawn.Color, pawn.Position );
					break;

				case PawnPromotion.Knight:

					promoted = new Knight( this, pawn.Color, pawn	.Position );
					break;

				case PawnPromotion.Bishop:

					promoted = new Bishop( this, pawn.Color, pawn.Position );
					break;
			}

			if ( promoted != null )
			{
				m_Table[ pawn.Position ] = promoted;

				pawn.Die( false );
			}

			PushGame( pawn.EnemyColor, null );
		}
Exemplo n.º 27
0
        public override List <Point2D> GetMoves(bool capture)
        {
            List <Point2D> moves = new List <Point2D>();

            int direction = m_Color == ChessColor.Black ? 1 : -1;

            Point2D step = new Point2D(m_Position.X, m_Position.Y + direction);

            if (m_BChessboard.IsValid(step) && m_BChessboard[step] == null)
            {
                moves.Add(step);

                // Verify if this pawn can make a second step
                step.Y += direction;

                if (!m_HasMoved && m_BChessboard[step] == null)
                {
                    moves.Add(step);                       // Point2D is a value type
                }
            }

            if (capture)
            {
                // Verify captures too
                Point2D p1 = new Point2D(m_Position.X + 1, m_Position.Y + direction);
                Point2D p2 = new Point2D(m_Position.X - 1, m_Position.Y + direction);

                if (m_BChessboard.IsValid(p1))
                {
                    BaseChessPiece piece1 = m_BChessboard[p1];
                    if (piece1 != null && piece1.Color != m_Color)
                    {
                        moves.Add(p1);
                    }
                    else
                    {
                        Point2D pass1 = new Point2D(m_Position.X - 1, m_Position.Y);

                        if (m_BChessboard.IsValid(pass1))
                        {
                            BaseChessPiece passpiece1 = m_BChessboard[pass1];
                            if (passpiece1 != null && passpiece1.Color != m_Color && passpiece1.AllowEnPassantCapture)
                            {
                                moves.Add(p1);
                            }
                        }
                    }
                }

                if (m_BChessboard.IsValid(p2))
                {
                    BaseChessPiece piece2 = m_BChessboard[p2];
                    if (piece2 != null && piece2.Color != m_Color)
                    {
                        moves.Add(p2);
                    }
                    else
                    {
                        Point2D pass2 = new      Point2D(m_Position.X + 1, m_Position.Y);

                        if (m_BChessboard.IsValid(p2))
                        {
                            BaseChessPiece passpiece2 = m_BChessboard[pass2];
                            if (passpiece2 != null && passpiece2.AllowEnPassantCapture && passpiece2.Color != m_Color)
                            {
                                moves.Add(pass2);
                            }
                        }
                    }
                }
            }

            return(moves);
        }
Exemplo n.º 28
0
		/// <summary>
		/// Verifies if the requested castle moved is allowed
		/// </summary>
		/// <param name="king">The King performing the castle</param>
		/// <param name="rook">The Rook</param>
		/// <param name="err">Will hold any error messages</param>
		/// <returns>True if the castle move is allowed</returns>
		public bool AllowCastle( BaseChessPiece king, BaseChessPiece rook, ref string err )
		{
			#region Castle Rules
			// 1 Your king has been moved earlier in the game.
			// 2 The rook that castles has been moved earlier in the game.
			// 3 There are pieces standing between your king and rook.
			// 4 The king is in check.
			// 5 The king moves through a square that is attacked by a piece of the opponent.
			// 6 The king would be in check after castling.
			#endregion

			if ( king.HasMoved || rook.HasMoved )
			{
				err = "You can't castle if the rook or king have already moved";
				return false; // Rules 1 and 2
			}

			if ( IsCheck( king.Color ) )
			{
				err = "You can't castle if your king is in check";
				return false; // Rule 4
			}

			bool queenside = rook.Position.X == 0;

			if ( queenside )
			{
				for ( int i = 1; i < 4; i++ )
				{
					if ( this[ i, king.Position.Y ] != null )
					{
						err = "You can't castle if there are pieces between the king and the rook";
						return false; // Rule 3 queenside
					}
				}
			}
			else
			{
				if ( this[ 5, king.Position.Y ] != null || this[ 6, king.Position.Y ] != null )
				{
					err = "You can't castle if there are pieces between the king and the rook";
					return false; // Rule 3 kingside
				}
			}

			// King always moves 2
			int kingX = king.Position.X + ( queenside ? -2 : 2 );
			int kingTransit = king.Position.X + ( queenside ? -1 : 1 );

			if ( IsAttacked( new Point2D( kingTransit, king.Position.Y ), king.EnemyColor ) )
			{
				err = "The king cannot move through a square that is under attack by the opponent";
				return false; // Rule 5
			}

			if ( IsAttacked( new Point2D( kingX, king.Position.Y ), king.EnemyColor ) )
			{
				err = "The king would be in check after the castle";
				return false; // Rule 6
			}

			return true;
		}
Exemplo n.º 29
0
        public override bool CanMoveTo(Point2D newLocation, ref string err)
        {
            if (!base.CanMoveTo(newLocation, ref err))
            {
                return(false);
            }

            // Verify if this is a castle
            BaseChessPiece king = m_BChessboard[newLocation];

            if (king is King && king.Color == m_Color)
            {
                // Trying to castle
                return(m_BChessboard.AllowCastle(king, this, ref err));
            }

            int dx = newLocation.X - m_Position.X;
            int dy = newLocation.Y - m_Position.Y;

            // Rooks can only move in one direction
            if (dx != 0 && dy != 0)
            {
                err = "Rooks can only move on straight lines";
                return(false);
            }

            if (dx != 0)
            {
                // Moving on the X axis
                int direction = dx > 0 ? 1 : -1;

                if (Math.Abs(dx) > 1)
                {
                    // Verify that the cells in between are empty
                    for (int i = 1; i < Math.Abs(dx); i++)                         // Start 1 tile after the rook, and stop one tile before destination
                    {
                        int offset = direction * i;

                        if (m_BChessboard[m_Position.X + offset, m_Position.Y] != null)
                        {
                            err = "Rooks can't move over pieces";
                            return(false);                            // There's a piece on the
                        }
                    }
                }

                // Verify if there's a piece to each at the end
                BaseChessPiece piece = m_BChessboard[newLocation];

                if (piece == null || piece.Color != m_Color)
                {
                    return(true);
                }
                else
                {
                    err = "You can't capture pieces of your same color";
                    return(false);
                }
            }
            else
            {
                // Moving on the Y axis
                int direction = dy > 0 ? 1 : -1;

                if (Math.Abs(dy) > 1)
                {
                    // Verify that the cells in between are empty
                    for (int i = 1; i < Math.Abs(dy); i++)
                    {
                        int offset = direction * i;

                        if (m_BChessboard[m_Position.X, m_Position.Y + offset] != null)
                        {
                            err = "The rook can't move over other pieces";
                            return(false);                            // Piece on the way
                        }
                    }
                }

                // Verify for piece at end
                BaseChessPiece piece = m_BChessboard[newLocation];

                if (piece == null || piece.Color != m_Color)
                {
                    return(true);
                }
                else
                {
                    err = "You can't capture pieces of your same color";
                    return(false);
                }
            }
        }
Exemplo n.º 30
0
		/// <summary>
		/// Callback for the move finalization
		/// </summary>
		public void OnPieceMove( Mobile from, object targeted )
		{
			string err = null;

			if ( ! ( targeted is IPoint2D ) )
			{
				err = "Invalid Move";
				m_MovingPiece = null;
				
				if ( GetColor( from ) == ChessColor.Black )
					SendAllGumps( null, err );
				else
					SendAllGumps( err, null );

				return;
			}

			if ( ! m_Board.TryMove( ref err, m_MovingPiece, new Point2D( targeted as IPoint2D ) ) )
			{
				m_MovingPiece = null;

				if ( GetColor( from ) == ChessColor.Black )
					SendAllGumps( null, err );
				else
					SendAllGumps( err, null );

				return;
			}

			// Move has been made. Wait until it's over
			if ( m_Status == GameStatus.WhiteToMove )
			{
				m_Status = GameStatus.WhiteMoving;
				SendAllGumps( "Making your move", null );
			}
			else
			{
				m_Status = GameStatus.BlackMoving;
				SendAllGumps( null, "Making your move" );
			}
		}
Exemplo n.º 31
0
        public override bool CanMoveTo(Point2D newLocation, ref string err)
        {
            if (!base.CanMoveTo(newLocation, ref err))
            {
                return(false);
            }

            if (newLocation.X == m_Position.X)
            {
                // Regular move
                int dy = newLocation.Y - m_Position.Y;

                // Trying to move more than two pieces, or more than one piece after the first move
                if (Math.Abs(dy) > 2 || (Math.Abs(dy)) > 1 && m_HasMoved)
                {
                    err = "You can move only 1 tile at a time, or 2 if it's the pawn's first move";
                    return(false);
                }

                // Verify direction
                if (m_Color == ChessColor.Black && dy < 0)
                {
                    err = "You can't move pawns backwards";
                    return(false);
                }

                if (m_Color == ChessColor.White && dy > 0)
                {
                    err = "You can't move pawns backwards";
                    return(false);
                }

                // Verify if there are pieces (any) on the target squares
                for (int i = 1; i <= Math.Abs(dy); i++)
                {
                    int offset = m_Color == ChessColor.Black ? i : -i;

                    if (m_BChessboard[m_Position.X, m_Position.Y + offset] != null)
                    {
                        err = "Pawns can't move over other pieces, and capture in diagonal";
                        return(false);
                    }
                }

                return(true);
            }
            else
            {
                // Trying to capture?
                int dx = newLocation.X - m_Position.X;
                int dy = newLocation.Y - m_Position.Y;

                if (Math.Abs(dx) != 1 || Math.Abs(dy) != 1)
                {
                    err = "Pawns move straight ahead, or capture in diagonal only";
                    return(false);
                }

                // Verify direction
                if (m_Color == ChessColor.Black && dy < 0)
                {
                    err = "You can't move pawns backwards";
                    return(false);
                }
                if (m_Color == ChessColor.White && dy > 0)
                {
                    err = "You can't move pawns backwards";
                    return(false);
                }

                // Verify if there's a piece to capture
                BaseChessPiece piece = m_BChessboard[newLocation];

                if (piece != null && piece.Color != m_Color)
                {
                    return(true);
                }
                else
                {
                    // Verify for an en passant capture
                    Point2D passant = new Point2D(m_Position.X + dx, m_Position.Y);

                    BaseChessPiece target = m_BChessboard[passant];

                    if (target != null && target.AllowEnPassantCapture && target.Color != m_Color)
                    {
                        return(true);
                    }
                    else
                    {
                        err = "You must capture a piece when moving in diagonal";
                        return(false);
                    }
                }
            }
        }