/// <summary>
/// Проверка стоит ли шах королю после хода
/// </summary>
/// <param name="position"></param>
/// <returns></returns>
protected bool IsHaventCheck(Position position)
{
//белым
if (!position.IsWhiteMove)
{
for (int x = 0; x < 8; x++)
{
for (int y = 0; y < 8; y++)
{
if (position.Board[x, y] == new Square(new King(ColorFigur.white)))
{
AttackChecker.CheckAttack(ref position, x, y, ColorFigur.black);
if (position.Board[x, y].IsAttackBlack)
{
position.Board[x, y].IsAttackBlack = false;
return(false);
}
}
}
}
}
//черным
else
{
for (int x = 0; x < 8; x++)
{
for (int y = 0; y < 8; y++)
{
if (position.Board[x, y] == new Square(new King(ColorFigur.black)))
{
AttackChecker.CheckAttack(ref position, x, y, ColorFigur.white);
if (position.Board[x, y].IsAttackWhite)
{
position.Board[x, y].IsAttackWhite = false;
return(false);
}
}
}
}
}
return(true);
}
/// <summary>
/// Проверяет позицию на наличие мата или пата
/// </summary>
/// <returns>null при отсутствии мата или пата. Ноль при пате. Положительное число при мате черным. Отрициательное - при мате белым</returns>
public static int?CheckPosition(Position position1)
{
Position position = (Position)position1.DeepCopy();
position.IsMat = false;
position.IsPat = false;
bool isLegal = false;
for (int i = 0; i < 8; i++)
{
for (int j = 0; j < 8; j++)
{
if ((position.Board[i, j].Figure.Color == ColorFigur.white && position.IsWhiteMove) ||
(position.Board[i, j].Figure.Color == ColorFigur.black && !position.IsWhiteMove))
{
if (CheckMovesForFigur(position, i, j))
{
isLegal = true;
goto l1;
}
}
}
}
l1:
if (!isLegal)
{
position.IsPat = true;
if (position.IsWhiteMove)
{
for (int i = 0; i < 8; i++)
{
for (int j = 0; j < 8; j++)
{
if (position.Board[i, j] == new Square(new King(ColorFigur.white)))
{
//isStop = true;
AttackChecker.CheckAttack(ref position, i, j, ColorFigur.black);
if (position.Board[i, j].IsAttackBlack)
{
position.IsMat = true;
position.IsPat = false;
}
break;
}
}
}
}
else
{
for (int i = 0; i < 8; i++)
{
for (int j = 0; j < 8; j++)
{
if (position.Board[i, j] == new Square(new King(ColorFigur.black)))
{
AttackChecker.CheckAttack(ref position, i, j, ColorFigur.white);
if (position.Board[i, j].IsAttackWhite)
{
position.IsMat = true;
position.IsPat = false;
}
break;
}
}
}
}
if (position.IsPat)
{
return(0);
}
if (position.IsMat)
{
if (position.IsWhiteMove)
{
return(-100000);
}
else
{
return(100000);
}
}
else
{
return(null);
}
}
else
{
return(null);
}
}
/// <summary>
/// проверка возможности хода для фигуры
/// </summary>
public override bool CheckMove(Position position, MoveCoord mc)
{
bool isLegal = false;
if (position.Board[mc.xEnd, mc.yEnd].Figure.Color == position.Board[mc.xStart, mc.yStart].Figure.Color)
{
return(false);
}
//проверка рокировки
if (position.Board[mc.xStart, mc.yStart].Figure.Color == ColorFigur.white && position.IsWhiteMove)
{
if (mc.xStart == 0 && mc.xEnd == 0 && mc.yStart == 4 && (mc.yEnd == 6 || mc.yEnd == 2))
{
if (position.IsKingMovedWhite)
{
return(false);
}
if (mc.yEnd == 6)
{
if (position.Board[mc.xEnd, 7].Figure.Type != TypeFigur.rock && position.Board[mc.xEnd, 7].Figure.Color != ColorFigur.white)
{
return(false);
}
if (position.IsRightRockMovedWhite)
{
return(false);
}
AttackChecker.CheckAttack(ref position, 0, 4, ColorFigur.black);
AttackChecker.CheckAttack(ref position, 0, 5, ColorFigur.black);
AttackChecker.CheckAttack(ref position, 0, 6, ColorFigur.black);
if (position.Board[0, 4].IsAttackBlack || position.Board[0, 5].IsAttackBlack || position.Board[0, 6].IsAttackBlack ||
position.Board[0, 5].Figure.Type != TypeFigur.none || position.Board[0, 6].Figure.Type != TypeFigur.none)
{
position.Board[0, 4].IsAttackBlack = false;
position.Board[0, 5].IsAttackBlack = false;
position.Board[0, 6].IsAttackBlack = false;
return(false);
}
else
{
position.Board[0, 4].IsAttackBlack = false;
position.Board[0, 5].IsAttackBlack = false;
position.Board[0, 6].IsAttackBlack = false;
mc.IsCastling = true;
isLegal = true;
}
}
else
{
if (position.Board[mc.xEnd, 0].Figure.Type != TypeFigur.rock && position.Board[mc.xEnd, 0].Figure.Color != ColorFigur.white)
{
return(false);
}
if (position.IsLeftRockMovedWhite)
{
return(false);
}
AttackChecker.CheckAttack(ref position, 0, 4, ColorFigur.black);
AttackChecker.CheckAttack(ref position, 0, 3, ColorFigur.black);
AttackChecker.CheckAttack(ref position, 0, 2, ColorFigur.black);
if (position.Board[0, 4].IsAttackBlack || position.Board[0, 3].IsAttackBlack || position.Board[0, 2].IsAttackBlack ||
position.Board[0, 2].Figure.Type != TypeFigur.none || position.Board[0, 3].Figure.Type != TypeFigur.none)
{
position.Board[0, 4].IsAttackBlack = false;
position.Board[0, 3].IsAttackBlack = false;
position.Board[0, 2].IsAttackBlack = false;
return(false);
}
else
{
position.Board[0, 4].IsAttackBlack = false;
position.Board[0, 3].IsAttackBlack = false;
position.Board[0, 2].IsAttackBlack = false;
mc.IsCastling = true;
isLegal = true;
}
}
}
else
{
if (Math.Abs(mc.xEnd - mc.xStart) <= 1)
{
if (Math.Abs(mc.yEnd - mc.yStart) <= 1)
{
AttackChecker.CheckAttack(ref position, mc.xEnd, mc.yEnd, ColorFigur.black);
if (position.Board[mc.xEnd, mc.yEnd].IsAttackBlack)
{
position.Board[mc.xEnd, mc.yEnd].IsAttackBlack = false;
return(false);
}
else
{
isLegal = true;
}
}
else
{
return(false);
}
}
else
{
return(false);
}
}
}
else if ((!position.IsWhiteMove) && position.Board[mc.xStart, mc.yStart].Figure.Color == ColorFigur.black)
{
if (mc.xStart == 7 && mc.xEnd == 7 && mc.yStart == 4 && (mc.yEnd == 6 || mc.yEnd == 2))
{
if (position.IsKingMovedBlack)
{
return(false);
}
if (mc.yEnd == 6)
{
if (position.Board[mc.xEnd, 7].Figure.Type != TypeFigur.rock && position.Board[mc.xEnd, 7].Figure.Color != ColorFigur.black)
{
return(false);
}
if (position.IsRightRockMovedBlack)
{
return(false);
}
AttackChecker.CheckAttack(ref position, 7, 4, ColorFigur.white);
AttackChecker.CheckAttack(ref position, 7, 5, ColorFigur.white);
AttackChecker.CheckAttack(ref position, 7, 6, ColorFigur.white);
if (position.Board[7, 4].IsAttackWhite || position.Board[7, 5].IsAttackWhite || position.Board[7, 6].IsAttackWhite ||
position.Board[7, 5].Figure.Type != TypeFigur.none || position.Board[7, 6].Figure.Type != TypeFigur.none)
{
position.Board[7, 4].IsAttackWhite = false;
position.Board[7, 5].IsAttackWhite = false;
position.Board[7, 6].IsAttackWhite = false;
return(false);
}
else
{
position.Board[7, 4].IsAttackWhite = false;
position.Board[7, 5].IsAttackWhite = false;
position.Board[7, 6].IsAttackWhite = false;
mc.IsCastling = true;
isLegal = true;
}
}
else
{
if (position.Board[mc.xEnd, 0].Figure.Type != TypeFigur.rock && position.Board[mc.xEnd, 0].Figure.Color != ColorFigur.black)
{
return(false);
}
if (position.IsLeftRockMovedBlack)
{
return(false);
}
AttackChecker.CheckAttack(ref position, 7, 4, ColorFigur.white);
AttackChecker.CheckAttack(ref position, 7, 3, ColorFigur.white);
AttackChecker.CheckAttack(ref position, 7, 2, ColorFigur.white);
if (position.Board[7, 4].IsAttackWhite || position.Board[7, 3].IsAttackWhite || position.Board[7, 2].IsAttackWhite ||
position.Board[7, 2].Figure.Type != TypeFigur.none || position.Board[7, 3].Figure.Type != TypeFigur.none)
{
position.Board[7, 4].IsAttackWhite = false;
position.Board[7, 3].IsAttackWhite = false;
position.Board[7, 2].IsAttackWhite = false;
return(false);
}
else
{
position.Board[7, 4].IsAttackWhite = false;
position.Board[7, 3].IsAttackWhite = false;
position.Board[7, 2].IsAttackWhite = false;
mc.IsCastling = true;
isLegal = true;
}
}
}
else
{
if (Math.Abs(mc.xEnd - mc.xStart) <= 1)
{
if (Math.Abs(mc.yEnd - mc.yStart) <= 1)
{
AttackChecker.CheckAttack(ref position, mc.xEnd, mc.yEnd, ColorFigur.white);
if (position.Board[mc.xEnd, mc.yEnd].IsAttackWhite)
{
position.Board[mc.xEnd, mc.yEnd].IsAttackWhite = false;
return(false);
}
else
{
isLegal = true;
}
}
else
{
return(false);
}
}
else
{
return(false);
}
}
}
else
{
return(false);
}
if (isLegal)
{
//проверка на отсутствие шаха королю после хода
position.MoveChess(mc);
//черным
isLegal = IsHaventCheck(position);
}
position.MoveBack(mc);
return(isLegal);
}