public virtual bool CheckForMate(ChessSide side, byte king_index)
{
IChessItemModel kingModel = new NullChessItemModel();
for (int i = 0; i < FiguresPlacement.GetLength(0); i++)
{
for (int j = 0; j < FiguresPlacement.GetLength(1); j++)
{
var cm_ij = FiguresPlacement[i, j];
if (!cm_ij.IsNullObject && cm_ij.Type == king_index && cm_ij.Side == side)
{
kingModel = cm_ij;
break;
}
}
}
if (kingModel.IsNullObject)
{
throw new Exception(side.ToString() + " king is missing!");
}
foreach (var cm_ij in FiguresPlacement)
{
if (!cm_ij.IsNullObject && cm_ij.Side == side)
{
List <bool> isJumpTemp;
List <bool> killPossibilityList;
foreach (var poss_move in cm_ij.GetPossibleMoves(FiguresPlacement, out isJumpTemp, out killPossibilityList))
{
var prev_pos = cm_ij.Pos;
var temp_chess_item = MoveChessItemPredictForward(cm_ij.Pos, poss_move);
bool isCheck = CheckForCheck(side);
MoveChessItemPredictBackward(temp_chess_item, prev_pos, cm_ij.Pos);
if (!isCheck && poss_move != prev_pos)
{
return(false);
}
}
}
}
return(true);
}
protected bool CheckForCheck(ChessSide side, byte king_index)
{
IChessItemModel cm = new NullChessItemModel();
for (int i = 0; i < FiguresPlacement.GetLength(0); i++)
{
for (int j = 0; j < FiguresPlacement.GetLength(1); j++)
{
var cm_ij = FiguresPlacement[i, j];
if (!cm_ij.IsNullObject && cm_ij.Type == king_index && cm_ij.Side == side)
{
cm = cm_ij;
break;
}
}
}
if (cm.IsNullObject)
{
return(false);
}
foreach (var cm_ij in FiguresPlacement)
{
if (!cm_ij.IsNullObject && cm_ij != cm && cm_ij.Side != side)
{
List <bool> isJumpTemp;
List <bool> killPossibilityList;
var poss_moves = cm_ij.GetPossibleMoves(FiguresPlacement, out isJumpTemp, out killPossibilityList);
int k = -1;
foreach (var poss_move in poss_moves)
{
k++;
if (poss_move == cm.Pos && killPossibilityList[k])
{
return(true);
}
}
}
}
return(false);
}