/// <summary>
/// 完成棋子的移动以及回合数的更新
/// </summary>
/// <param name="start">起始坐标</param>
/// <param name="end">终止坐标</param>
/// <returns></returns>
public ChessPosition move(Coordinate start, Coordinate end)
{
ChessPosition new_position = new ChessPosition(this);
#region ' Update the Stats '
new_position._current_player = new_position._current_player.flip();
if (this[end] == null)
{
new_position.noncapture_moves += 1;
}
else
{
new_position.noncapture_moves = 0;
}
if (this._current_player == ChessColour.BLACK)
{
new_position.total_rounds += 1;
}
#endregion
#region ' Move the Piece '
new_position[start] = new Piece();
new_position[end] = new Piece(this[start].ToString());
#endregion
return(new_position);
}
/// <summary>
/// 刷新格点的Tag.
/// </summary>
/// <param name="chess_position">当前棋局</param>
private void refresh_pieces(ChessPosition chess_position)
{
foreach (Coordinate cdn in this.Keys)
{
Coordinate reflected_cdn = cdn.reflect(this.reflection);
this[reflected_cdn].tag.piece = chess_position[cdn];
Boolean masked = this.masked_panels.Contains(cdn);
this[reflected_cdn].masked = masked;
this[reflected_cdn].refresh_image();
}
}
/// <summary>
/// 初始化特定fen值下的棋子.
/// </summary>
/// <param name="fen"></param>
public void initialize_pieces(String fen)
{
this.turns = 0;
this.lobby_player = ChessColour.NONE;
this.last_click = null;
this.masked_panels.Clear();
this.chess_positions = new List <ChessPosition>();
ChessPosition chess_position = new ChessPosition(fen);
this.chess_positions.Add(chess_position);
this.refresh_pieces();
}
/// <summary>
/// 获得棋步的音频字符串
/// </summary>
/// <param name="start">起始坐标</param>
/// <param name="end">终止坐标</param>
/// <returns></returns>
public String get_audio_string(Coordinate start, Coordinate end)
{
ChessColour player = this.current_player;
PieceType piece = this[start].type;
CoordinateDelta delta = end - start;
VerticalLine start_line = ChessPosition.get_vertical_line(
start, player);
VerticalLine end_line = ChessPosition.get_vertical_line(
end, player);
MoveDirection direction = ChessPosition.get_move_direction(
delta, player);
PieceIdentifier id;
switch (piece)
{
default:
throw new ArgumentOutOfRangeException("棋子种类越界!");
case PieceType.ADVISOR:
case PieceType.BISHOP:
return(ChessMove.to_audio_name(
player, piece, start_line, direction, end_line));
case PieceType.CANNON:
case PieceType.ROOK:
case PieceType.PAWN:
id = this.get_identifier(start);
if (direction == MoveDirection.SIDEWARD)
{
return(ChessMove.to_audio_name(
id, player, piece, start_line, direction, end_line));
}
return(ChessMove.to_audio_name(
id, player, piece, start_line, direction, delta));
case PieceType.KING:
if (direction == MoveDirection.SIDEWARD)
{
return(ChessMove.to_audio_name(
player, piece, start_line, direction, end_line));
}
return(ChessMove.to_audio_name(
player, piece, start_line, direction, delta));
case PieceType.KNIGHT:
id = this.get_identifier(start);
return(ChessMove.to_audio_name(
id, player, piece, start_line, direction, end_line));
}
}
/// <summary>
/// 初始化<see cref="ChessPosition"/>的新实例
/// </summary>
/// <param name="chess_position"></param>
public ChessPosition(ChessPosition chess_position)
: this(chess_position.ToString())
{
;
}
/// <summary>
/// 判断忽略棋规的情况下棋步是否合法
/// </summary>
/// <param name="start">起始坐标</param>
/// <param name="end">终止坐标</param>
private Boolean is_raw_move(Coordinate start, Coordinate end)
{
ChessColour player = this.current_player;
PieceType piece = this[start].type;
CoordinateDelta delta = end - start;
switch (piece)
{
default:
throw new ArgumentOutOfRangeException("棋子种类越界!");
case PieceType.ADVISOR:
case PieceType.KING:
if (ChessPosition.is_inside_castle(end, player))
{
return(true);
}
return(false);
case PieceType.BISHOP:
if (ChessPosition.is_castle_side(end, player))
{
if (this.check_bishop_eye(start, delta))
{
return(true);
}
}
return(false);
case PieceType.CANNON:
if (this[end].type == PieceType.NONE)
{
if (this.count_piece(start, delta) == 0)
{
return(true);
}
return(false);
}
if (this.count_piece(start, delta) == 1)
{
return(true);
}
return(false);
case PieceType.KNIGHT:
if (this.check_knight_leg(start, delta))
{
return(true);
}
return(false);
case PieceType.PAWN:
if (ChessPosition.get_move_direction(delta, player) ==
MoveDirection.BACKWARD)
{
return(false);
}
if (ChessPosition.is_castle_side(start, player))
{
if (!delta.abs().Equals(new CoordinateDelta(0, 1)))
{
return(false);
}
}
return(true);
case PieceType.ROOK:
if (this.count_piece(start, delta) == 0)
{
return(true);
}
return(false);
}
}
