/// <summary>
/// Observe opponent's moves and increment the probability of that move played.
/// Store the move in the circular array.
/// </summary>
/// <param name="opponentMove"></param>
public override void Observe(Move opponentMove)
{
this.moveCount++; // for every opponent move played, increase its probability
this.winningScenarios[(int)opponentMove].Probability++;
recentMoves.AddElement(opponentMove);
}