public void scoreRound(Decision playerDecision)
        {
            var opponentDecision = decisionMaker.getNextDecision();
            int score = playerDecision.Score(opponentDecision);

            if (score == -1)
                opponentScore += 1;
            else if (score == 1)
                playerScore += 1;

            ScoreLabel.Content = playerScore + " : " + opponentScore;

            HistoryTextBox.Text = "Ty: " + playerDecision.toLocalString() + ", przeciwnik: " + opponentDecision.toLocalString();

            decisionMaker.rememberDecision(playerDecision);
        }