/// <summary>
/// Checks the column for defence.
/// </summary>
/// <returns>The column for defence.</returns>
/// <param name="gridHandler">Grid handler.</param>
/// <param name="totalTurns">Total turns.</param>
/// <param name="lastUsedCellID">Last used cell I.</param>
/// <param name="opponentValue">Opponent value.</param>
private int CheckColumnForDefence(GridHandler gridHandler, int totalTurns, int lastUsedCellID, C.CellState opponentValue)
{
GridHandler.GridAnalysisForDefence analysis = gridHandler.GetColumnAnalysis(lastUsedCellID, opponentValue);
if (analysis.isCellHasEmptySpace)
{
if (analysis.isOpponentWinning)
{
return(analysis.proposedCellID);
}
}
return(-1);
}