public WinState GetWinState()
{
FieldState LastPiece = FieldState.EMPTY;
int EqualPiecesInRow = 0;
// Check columns
for (int column = 0; column < Board.GetBoardSize(); column++)
{
for (int row = 0; row < Board.GetBoardSize(); row++)
{
if (LastPiece != Board.BoardState[column, row])
{
EqualPiecesInRow = 0;
}
LastPiece = Board.BoardState[column, row];
EqualPiecesInRow++;
if (EqualPiecesInRow == NumWinPieces && LastPiece != FieldState.EMPTY)
{
return(LastPiece == FieldState.X ? WinState.XWIN : WinState.OWIN);
}
}
LastPiece = FieldState.EMPTY;
EqualPiecesInRow = 0;
}
LastPiece = FieldState.EMPTY;
EqualPiecesInRow = 0;
// Check rows
for (int row = 0; row < Board.GetBoardSize(); row++)
{
for (int column = 0; column < Board.GetBoardSize(); column++)
{
if (LastPiece != Board.BoardState[column, row])
{
EqualPiecesInRow = 0;
}
LastPiece = Board.BoardState[column, row];
EqualPiecesInRow++;
if (EqualPiecesInRow == NumWinPieces && LastPiece != FieldState.EMPTY)
{
return(LastPiece == FieldState.X ? WinState.XWIN : WinState.OWIN);
}
}
LastPiece = FieldState.EMPTY;
EqualPiecesInRow = 0;
}
LastPiece = FieldState.EMPTY;
EqualPiecesInRow = 0;
// Check diagonals
for (int row = NumWinPieces - 1; row < Board.GetBoardSize(); row++)
{
for (int column = 0; column <= row; column++)
{
if (LastPiece != Board.BoardState[column, row - column])
{
EqualPiecesInRow = 0;
}
LastPiece = Board.BoardState[column, row - column];
EqualPiecesInRow++;
if (EqualPiecesInRow == NumWinPieces && LastPiece != FieldState.EMPTY)
{
return(LastPiece == FieldState.X ? WinState.XWIN : WinState.OWIN);
}
}
if (row > 0)
{
LastPiece = FieldState.EMPTY;
EqualPiecesInRow = 0;
for (int column = Board.GetBoardSize() - 1; column >= row; column--)
{
if (LastPiece != Board.BoardState[column, row + (Board.GetBoardSize() - 1 - column)])
{
EqualPiecesInRow = 0;
}
LastPiece = Board.BoardState[column, row + (Board.GetBoardSize() - 1 - column)];
EqualPiecesInRow++;
if (EqualPiecesInRow == NumWinPieces && LastPiece != FieldState.EMPTY)
{
return(LastPiece == FieldState.X ? WinState.XWIN : WinState.OWIN);
}
}
}
LastPiece = FieldState.EMPTY;
EqualPiecesInRow = 0;
}
// Check anti diagonals
for (int row = Board.GetBoardSize() - 1 - (NumWinPieces - 1); row >= 0; row--)
{
for (int column = 0; column <= Board.GetBoardSize() - 1 - row; column++)
{
if (LastPiece != Board.BoardState[column, row + column])
{
EqualPiecesInRow = 0;
}
LastPiece = Board.BoardState[column, row + column];
EqualPiecesInRow++;
if (EqualPiecesInRow == NumWinPieces && LastPiece != FieldState.EMPTY)
{
return(LastPiece == FieldState.X ? WinState.XWIN : WinState.OWIN);
}
}
if (row > 0)
{
LastPiece = FieldState.EMPTY;
EqualPiecesInRow = 0;
for (int column = Board.GetBoardSize() - 1; column >= row; column--)
{
if (LastPiece != Board.BoardState[column, row + (Board.GetBoardSize() - 1 - column)])
{
EqualPiecesInRow = 0;
}
LastPiece = Board.BoardState[column, row + (Board.GetBoardSize() - 1 - column)];
EqualPiecesInRow++;
if (EqualPiecesInRow == NumWinPieces && LastPiece != FieldState.EMPTY)
{
return(LastPiece == FieldState.X ? WinState.XWIN : WinState.OWIN);
}
}
}
LastPiece = FieldState.EMPTY;
EqualPiecesInRow = 0;
}
return(Board.IsFull() ? WinState.DRAW : WinState.INGAME);
}
