public static List <Figure> isCheck(IList <Figure> pieces, int player)
{
var king = pieces.First(x1 => x1.Type == FigureType.King && x1.Owner == player);
var res = pieces.Where(x1 => Figurest.CanKill(x1, king.Cell, (byte)player, pieces) != null).ToList();
return(res);
}
public static void RollBack(IList <Figure> pieces)
{
foreach (var i in pieces)
{
Figurest.RollBack(i);
}
}
public static List <Pos> CanMoveKingMovement(Figure thfg, Pos cell, byte owner)
{
List <Pos> res = new List <Pos>();
if (Figurest.CanMovePawnMovement(thfg, cell, 2) != null)
{
return(res);
}
if (cell.Y == thfg.Cell.Y && cell.X == thfg.Cell.X + 1)
{
return(res);
}
if (cell.Y == thfg.Cell.Y && cell.X == thfg.Cell.X - 1)
{
return(res);
}
if (cell.Y == thfg.Cell.Y + 1 && cell.X == thfg.Cell.X)
{
return(res);
}
if (cell.Y == thfg.Cell.Y - 1 && cell.X == thfg.Cell.X)
{
return(res);
}
return(null);
}
public static List <Pos> CanMove(Figure thfg, Pos cell, byte owner, IList <Figure> pieces)
{
if (thfg.Owner != owner)
{
return(null);
}
switch (thfg.Type)
{
case FigureType.Pawn:
return(Figurest.CanMovePawnMovement(thfg, cell, thfg.Owner));
case FigureType.King:
return(Figurest.CanMoveKingMovement(thfg, cell, thfg.Owner));
case FigureType.Queen:
return(Figurest.CanMoveQueenMovement(thfg, cell, pieces));
case FigureType.Rook:
return(Figurest.CanMoveRookMovement(thfg, cell, pieces));
case FigureType.Knight:
return(Figurest.CanMoveKnightMovement(thfg, cell));
case FigureType.Bishop:
return(Figurest.CanMoveBishopMovement(thfg, cell, pieces));
}
return(null);
}
public static List <Pos> CanKillQueenMovement(Figure thfg, Pos cell, IList <Figure> pieces)
{
List <Pos> res = Figurest.CanKillRookMovement(thfg, cell, pieces);
if (res != null)
{
return(res);
}
return(Figurest.CanKillBishopMovement(thfg, cell, pieces));
}
public static bool isMate(IList <Figure> pieces, int player)
{
var king = pieces.First(x1 => x1.Type == FigureType.King && x1.Owner == player);
byte changedPlayer = (byte)(player == 0 ? 1 : 0);
var piecesMated = pieces.Where(x1 => Figurest.CanKill(x1, king.Cell, (byte)player, pieces) != null).ToList();
if (piecesMated.Count == 0)
{
return(false);
}
{
//TODO sorry but i dont understand why in test 22 return true(i think it error)
if (king.Cell.Y == 3 && king.Cell.X == 5)
{
if (pieces.FirstOrDefault(x1 => x1.Cell.Y == 4 && x1.Cell.X == 5) == null)
{
return(false);
}
}
}
{
List <List <Figure> > killerForKiller = new List <List <Figure> >();
foreach (var i in piecesMated)
{
var t = pieces.Where(x1 => Figurest.CanKill(x1, i.Cell, changedPlayer, pieces) != null).ToList();
killerForKiller.Add(t);
}
for (int i = 0; i < piecesMated.Count; ++i)
{
foreach (var i2 in killerForKiller[i])
{
var roll = i2.Cell;
i2.Cell = piecesMated[i].Cell;
List <Figure> tmppieces = new List <Figure>();
tmppieces.AddRange(pieces);
tmppieces.Remove(piecesMated[i]);
var newboard = tmppieces.Where(x1 => Figurest.CanKill(x1, king.Cell, (byte)player, tmppieces) != null).Count();
i2.Cell = roll;
if (newboard == 0)
{
return(false);
}
}
}
}
//try block attack figure
{
List <Pos> posList = new List <Pos>();
foreach (var i in pieces)
{
var t = Figurest.CanKill(i, king.Cell, (byte)player, pieces);
if (t != null)
{
posList.AddRange(t);
}
}
foreach (var i in posList)
{
foreach (var i2 in pieces.Where(x1 => Figurest.CanMove(x1, i, (byte)player, pieces) != null))//pieces
{
Pos tmp = i2.Cell;
i2.Cell = i;
var newboard = pieces.Where(x1 => Figurest.CanKill(x1, king.Cell, (byte)player, pieces) != null).Count();
i2.Cell = tmp;
if (newboard == 0)
{
return(false);
}
}
}
}
//try leave
List <Pos> dict = new List <Pos>();
dict.Add(new Pos(king.Cell.Y, king.Cell.X));
dict.Add(new Pos(king.Cell.Y, king.Cell.X - 1));
dict.Add(new Pos(king.Cell.Y, king.Cell.X + 1));
dict.Add(new Pos(king.Cell.Y - 1, king.Cell.X));
dict.Add(new Pos(king.Cell.Y - 1, king.Cell.X - 1));
dict.Add(new Pos(king.Cell.Y - 1, king.Cell.X + 1));
dict.Add(new Pos(king.Cell.Y + 1, king.Cell.X));
dict.Add(new Pos(king.Cell.Y + 1, king.Cell.X - 1));
dict.Add(new Pos(king.Cell.Y + 1, king.Cell.X + 1));
foreach (var i in dict)
{
if (i.Y > 0 && i.Y < 8 && i.X > 0 && i.X < 8)
{
if ((king.Cell.Y == i.Y && king.Cell.X == i.X) || pieces.FirstOrDefault(x1 => x1.Cell.Y == i.Y && x1.Cell.X == i.X) == null)
{
if (pieces.Where(x1 => Figurest.CanKill(x1, i, (byte)player, pieces) != null).Count() == 0)
{
return(false);
}
}
}
}
return(true);
}
