public PieceBishop(Enums.GameSide manSide, Position position)
: base(position)
{
this.GameSide = manSide;
switch (manSide)
{
case Enums.GameSide.White:
this.PieceType = Enums.PieceType.WhiteBishop;
break;
case Enums.GameSide.Black:
this.PieceType = Enums.PieceType.BlackBishop;
break;
}
}
public PieceQueen(Enums.GameSide side, Position position)
: base(position)
{
this.GameSide = side;
switch (side)
{
case Enums.GameSide.White:
this.PieceType = Enums.PieceType.WhiteQueen;
break;
case Enums.GameSide.Black:
this.PieceType = Enums.PieceType.BlackQueen;
break;
}
}
public PiecePawn(Enums.GameSide side, Position position)
: base(position)
{
this.GameSide = side;
this.EnableEnPassanted = false;
switch (side)
{
case Enums.GameSide.White:
this.PieceType = Enums.PieceType.WhitePawn;
break;
case Enums.GameSide.Black:
this.PieceType = Enums.PieceType.BlackPawn;
break;
}
}
public PieceKing(Enums.GameSide side, Position position)
: base(position)
{
this.GameSide = side;
this.IsMoved = false;
switch (side)
{
case Enums.GameSide.White:
this.PieceType = Enums.PieceType.WhiteKing;
break;
case Enums.GameSide.Black:
this.PieceType = Enums.PieceType.BlackKing;
break;
}
}
protected override Position InitPosition(Position position)
{
if (position == Position.Empty)
{
switch (this.GameSide)
{
case Enums.GameSide.White:
return new Position(4, 1);
case Enums.GameSide.Black:
return new Position(4, 8);
default:
throw new PieceException(ExString.PositionIsEmpty);
}
}
else
return position;
}
/// <summary>
/// 象的基本路线(即斜向)
/// </summary>
internal static void BishopShift(
Enums.GameSide side, ISituation situation, Position position,
Positions moveInPs, Positions capturePs)
{
bool canContine = true;
Position tgtPos = Position.Empty;
canContine = true;
tgtPos = position;
while (canContine)
{
tgtPos = tgtPos.ShiftEastNorth();
canContine = Position.Shift(side, situation, tgtPos, moveInPs, capturePs);
}
canContine = true;
tgtPos = position;
while (canContine)
{
tgtPos = tgtPos.ShiftEastSouth();
canContine = Position.Shift(side, situation, tgtPos, moveInPs, capturePs);
}
canContine = true;
tgtPos = position;
while (canContine)
{
tgtPos = tgtPos.ShiftWestNorth();
canContine = Position.Shift(side, situation, tgtPos, moveInPs, capturePs);
}
canContine = true;
tgtPos = position;
while (canContine)
{
tgtPos = tgtPos.ShiftWestSouth();
canContine = Position.Shift(side, situation, tgtPos, moveInPs, capturePs);
}
}
/// <summary>
/// 内部方法：移动棋子，并更改FEN记录
/// </summary>
/// <param name="piece">被移动的棋子</param>
/// <param name="srcPos">源棋格</param>
/// <param name="tgtPos">目标棋格</param>
private void PieceMoveIn(Piece piece, Enums.ActionCollection actions, Position srcPos, Position tgtPos)
{
switch (piece.PieceType)
{
#region case 王车易位，过路兵，升变
case Enums.PieceType.WhiteKing:
case Enums.PieceType.BlackKing:
{
//TODO:在这里实现王车易位
break;
}
case Enums.PieceType.WhitePawn:
case Enums.PieceType.BlackPawn:
{
//移走被吃的过路兵
if (_piecePawnByEnPassanted != null)
{
if (tgtPos.X == _piecePawnByEnPassanted.Position.X)
{
actions.Add(Enums.Action.EnPassant);
PieceMoveOut(_piecePawnByEnPassanted.Position);
}
}
//TODO:在这里实现“升变”
break;
}
case Enums.PieceType.WhiteQueen:
case Enums.PieceType.WhiteRook:
case Enums.PieceType.WhiteBishop:
case Enums.PieceType.WhiteKnight:
case Enums.PieceType.BlackQueen:
case Enums.PieceType.BlackRook:
case Enums.PieceType.BlackBishop:
case Enums.PieceType.BlackKnight:
case Enums.PieceType.AllKings:
case Enums.PieceType.AllQueens:
case Enums.PieceType.AllRooks:
case Enums.PieceType.AllBishops:
case Enums.PieceType.AllKnights:
case Enums.PieceType.AllPawns:
case Enums.PieceType.All:
case Enums.PieceType.None:
default:
break;
#endregion
}
piece.Position = tgtPos;
this.SetByPosition(srcPos.Dot, '1');
this.SetByPosition(tgtPos.Dot, Enums.FromPieceType(piece.PieceType)[0]);
this.GameSide = Enums.GetOtherGameSide(this.GameSide);
if (this.GameSide == Enums.GameSide.White)
{
this.FullMoveNumber++;
}
this.HalfMoveClock++;
}
protected virtual void OnPieceMoveOutEvent(Piece piece, Position pos)
{
if (PieceMoveOutEvent != null)
{
PieceMoveOutEvent(piece, pos);
}
}
/// <summary>
/// 移除指定位置棋格的棋子
/// </summary>
/// <param name="pos">指定位置</param>
public void PieceMoveOut(Position pos)
{
Piece piece = this.ActivedPieces[pos.Dot];
piece.IsCaptured = true;
this.ActivedPieces.Remove(piece);
this.MovedPieces.Add(piece);
this.HalfMoveClock = 0;
OnPieceMoveOutEvent(piece, pos);//注册棋子被俘事件
}
public static bool Shift(
Enums.GameSide side, ISituation situation,
Position tgtPos, Positions moveInPs, Positions capturePs)
{
return Shift(side, situation, tgtPos, moveInPs, capturePs, true);
}
/// <summary>
/// 从当前的位置移动到新位置。
/// 而后，判断该位置中是否有棋子，并根据判断结果更新两个Position集合(可移动"位置"集合,可杀棋"位置"集合)。
/// 并返回是否可以继续移动的判断。
/// </summary>
/// <param name="situation">当前局面</param>
/// <param name="tgtPos">目标位置</param>
/// <param name="moveInPs">可移动"位置"集合</param>
/// <param name="capturePs">可杀棋"位置"集合</param>
/// <param name="enableToMoved">该棋格为空时，是否可以移入，一般是指“兵”，“兵”的斜向的两个棋格对于“兵”来讲能吃子不能移入。</param>
/// <returns>移动到新位置后是否可以继续移动(当目标棋格中无棋子)</returns>
public static bool Shift(
Enums.GameSide side, ISituation situation,
Position tgtPos, Positions moveInPs, Positions capturePs, bool enableToMoved)
{
if (tgtPos == Position.Empty) return false;
char pieceChar;
if (situation.TryGetPiece(tgtPos.Dot, out pieceChar))
{
if (char.IsLower(pieceChar) && side == Enums.GameSide.White)
capturePs.Add(tgtPos);
if (char.IsUpper(pieceChar) && side == Enums.GameSide.Black)
capturePs.Add(tgtPos);
return false;
}
else
{
if (enableToMoved)
{
moveInPs.Add(tgtPos);
return true;
}
else
return false;
}
}