/// <summary>
/// 移动指定位置棋格的棋子
/// </summary>
/// <param name="pair">指定的成对的位置,First值为源棋格,Second值是目标棋格</param>
public void PieceMoveIn(PositionPair pair)
{
Enums.ActionCollection actions = new Enums.ActionCollection();
Piece piece;
if (this.TryGetPiece(pair.First.Dot, out piece))
{
//第1步，判断一下过路兵的格子的逻辑
if (piece is PiecePawn)
{
if (pair.First.Y == pair.Second.Y)
{
return;
}
}
actions.Add(Enums.Action.General);
//第2步，判断目标棋格中是否有棋子。
//如果有棋子，更改Action，调用PieceMoveOut方法。
if (this.ContainsPiece(pair.Second.Dot))
{
actions.Add(Enums.Action.Capture);
this.PieceMoveOut(pair.Second);
}
//第3步，调用内部方法PieceMoveIn，移动棋子，并更改FEN记录
this.PieceMoveIn(piece, actions, pair.First, pair.Second);
//第4步，如上一步棋出现过“过路兵”的局面，而现在进行了新的一步棋了，故而取消上一步棋的“过路兵”局面。
if (_piecePawnByEnPassanted != null)
{
_piecePawnByEnPassanted.EnableEnPassanted = false;
_piecePawnByEnPassanted = null;
}
//第5步，判断是否过路兵的局面
if (piece is PiecePawn)
{
#region 过路兵
//成为能被吃过路兵的“兵”
if ((pair.First.Y == 1 && pair.Second.Y == 3) || (pair.First.Y == 6 && pair.Second.Y == 4))
{
char pawnChar;
Position tmpPos = pair.Second.ShiftWest();
if (tmpPos != null)
{
if (this.TryGetPiece(tmpPos.Dot, out pawnChar))
{
Enums.GameSide side = char.IsLower(pawnChar) ? Enums.GameSide.Black : Enums.GameSide.White;
if (this.GameSide == side)
{
_piecePawnByEnPassanted = piece as PiecePawn;
_piecePawnByEnPassanted.EnableEnPassanted = true;
}
}
}
tmpPos = pair.Second.ShiftEast();
if (tmpPos != null)
{
if (this.TryGetPiece(tmpPos.Dot, out pawnChar))
{
Enums.GameSide side = char.IsLower(pawnChar) ? Enums.GameSide.Black : Enums.GameSide.White;
if (this.GameSide == side)
{
_piecePawnByEnPassanted = piece as PiecePawn;
_piecePawnByEnPassanted.EnableEnPassanted = true;
}
}
}
}
else
{
((PiecePawn)piece).EnableEnPassanted = false;
}
#endregion
}
//第6步，移动棋子后，根据移动棋子后的局面生成Action，主要是判断另一战方的“王”是否被将军
actions.Add(this.IsCheckPieceKing(piece));
//第7步，注册棋子移动后事件
OnPieceMoveInEvent(piece, actions, pair);
}
}
/// <summary>
/// 移动指定位置棋格的棋子
/// </summary>
/// <param name="pair">指定的成对的位置,First值为源棋格,Second值是目标棋格</param>
public void PieceMoveIn(PositionPair pair)
{
Enums.ActionCollection actions = new Enums.ActionCollection();
Piece piece;
if (this.TryGetPiece(pair.First.Dot, out piece))
{
//第1步，判断一下过路兵的格子的逻辑
if (piece is PiecePawn)
{
if (pair.First.Y == pair.Second.Y)
{
return;
}
}
actions.Add(Enums.Action.General);
//第2步，判断目标棋格中是否有棋子。
//如果有棋子，更改Action，调用PieceMoveOut方法。
if (this.ContainsPiece(pair.Second.Dot))
{
actions.Add(Enums.Action.Capture);
this.PieceMoveOut(pair.Second);
}
//第3步，调用内部方法PieceMoveIn，移动棋子，并更改FEN记录
this.PieceMoveIn(piece, actions, pair.First, pair.Second);
//第4步，如上一步棋出现过“过路兵”的局面，而现在进行了新的一步棋了，故而取消上一步棋的“过路兵”局面。
if (_piecePawnByEnPassanted != null)
{
_piecePawnByEnPassanted.EnableEnPassanted = false;
_piecePawnByEnPassanted = null;
}
//第5步，判断是否过路兵的局面
if (piece is PiecePawn)
{
#region 过路兵
//成为能被吃过路兵的“兵”
if ((pair.First.Y == 1 && pair.Second.Y == 3) || (pair.First.Y == 6 && pair.Second.Y == 4))
{
char pawnChar;
Position tmpPos = pair.Second.ShiftWest();
if (tmpPos != null)
{
if (this.TryGetPiece(tmpPos.Dot, out pawnChar))
{
Enums.GameSide side = char.IsLower(pawnChar) ? Enums.GameSide.Black : Enums.GameSide.White;
if (this.GameSide == side)
{
_piecePawnByEnPassanted = piece as PiecePawn;
_piecePawnByEnPassanted.EnableEnPassanted = true;
}
}
}
tmpPos = pair.Second.ShiftEast();
if (tmpPos != null)
{
if (this.TryGetPiece(tmpPos.Dot, out pawnChar))
{
Enums.GameSide side = char.IsLower(pawnChar) ? Enums.GameSide.Black : Enums.GameSide.White;
if (this.GameSide == side)
{
_piecePawnByEnPassanted = piece as PiecePawn;
_piecePawnByEnPassanted.EnableEnPassanted = true;
}
}
}
}
else
{
((PiecePawn)piece).EnableEnPassanted = false;
}
#endregion
}
//第6步，移动棋子后，根据移动棋子后的局面生成Action，主要是判断另一战方的“王”是否被将军
actions.Add(this.IsCheckPieceKing(piece));
//第7步，注册棋子移动后事件
OnPieceMoveInEvent(piece, actions, pair);
}
}
