private MinMaxScore GetMinMaxScore(Board board, Play play, int depth)
{
MinMaxScore minMaxScore = new MinMaxScore
{
Play = play,
Points = 0
};
// Check win condition for player X
if (board.IsVictoryCondition(Marker.X))
{
minMaxScore.Points = play.PlayerId == Marker.X ? 10 - depth : depth - 10;
return(minMaxScore);
}
// Check win condition for player O
if (board.IsVictoryCondition(Marker.O))
{
minMaxScore.Points = play.PlayerId == Marker.O ? 10 - depth : depth - 10;
return(minMaxScore);
}
// Check draw condition
if (board.AreAllPositionMarked())
{
return(minMaxScore);
}
// otherwise...
return(null);
}