private void InitializeQuiz()
{
db = new Database();
lblDisplayName.Text += User.Instance.DisplayName;
lblScore.Text += User.Instance.Score.ToString();
// Daten holen
listGeodata = db.GetData(QuizConfig.Instance.MaxQuestions, QuizConfig.Instance.Continent);
// Objekt questions mit Abstrakter Klasse initialisieren
questions = new Question[QuizConfig.Instance.MaxQuestions];
for (int i = 0; i < QuizConfig.Instance.MaxQuestions; i++)
{
// Den ersten Eintrag als Frage speichern
GeoData question = listGeodata[i];
// Falsche Anworten holen (WHERE id != question.Id)
List <GeoData> answers = db.GetFalseAnswers(question.Id, QuizConfig.Instance.Continent);
// Je nach Fragentyp (Qt) wird das abstrakte Objekt
// mit einem konkreten Objekt 'gefüllt'.
// Als Parameter werden die Frage, die Antworten und der Antworttyp übergeben.
switch (QuizConfig.Instance.Qt)
{
case QuestionType.Capital:
questions[i] = new CapitalQuestion(
question,
answers,
QuizConfig.Instance.At
);
break;
case QuestionType.Country:
questions[i] = new CountryQuestion(
question,
answers,
QuizConfig.Instance.At
);
break;
case QuestionType.Flag:
questions[i] = new FlagQuestion(
question,
answers,
QuizConfig.Instance.At
);
break;
}
}
}
// Nagut, die hier erkläre ich.
// Beim Aufruf der Klasse wird diese Methode hier als erstes aufgerufen.
// Deswegen heisst es Method Factory
public override void CreateAnswers(GeoData question, List <GeoData> answers, AnswerType at)
{
// Da die Methode oft und schnell aufgerufen wird, kommt Random()
// nicht so schnell hinterher um ein gutes Random Ergebnis zu erstellen.
// Was Random() übrigens eh nicht tut. Siehe Birthday Paradox.
// Daher die Übergabe der Guid.
Random gen = new Random(Guid.NewGuid().GetHashCode());
At = at;
gen = new Random(Guid.NewGuid().GetHashCode());
CorrectAnswer = question;
CorrectAnswer.State = true;
WrongAnswers = new List <GeoData>();
WrongAnswers = answers;
AllAnswers = new List <GeoData>();
AllAnswers.Add(WrongAnswers[0]);
AllAnswers.Add(WrongAnswers[1]);
AllAnswers.Add(WrongAnswers[2]);
AllAnswers.Insert(gen.Next(4), CorrectAnswer);
switch (At)
{
case AnswerType.Country:
Answers.Add(new CountryAnswer(AllAnswers[0]));
Answers.Add(new CountryAnswer(AllAnswers[1]));
Answers.Add(new CountryAnswer(AllAnswers[2]));
Answers.Add(new CountryAnswer(AllAnswers[3]));
break;
case AnswerType.Capital:
Answers.Add(new CapitalAnswer(AllAnswers[0]));
Answers.Add(new CapitalAnswer(AllAnswers[1]));
Answers.Add(new CapitalAnswer(AllAnswers[2]));
Answers.Add(new CapitalAnswer(AllAnswers[3]));
break;
default:
break;
}
}
public override void CreateAnswers(GeoData question, List <GeoData> answers, AnswerType at)
{
Random gen = new Random(Guid.NewGuid().GetHashCode());
At = at;
gen = new Random(Guid.NewGuid().GetHashCode());
CorrectAnswer = question;
CorrectAnswer.State = true;
WrongAnswers = new List <GeoData>();
WrongAnswers = answers;
AllAnswers = new List <GeoData>();
AllAnswers.Add(WrongAnswers[0]);
AllAnswers.Add(WrongAnswers[1]);
AllAnswers.Add(WrongAnswers[2]);
AllAnswers.Insert(gen.Next(4), CorrectAnswer);
switch (At)
{
case AnswerType.Capital:
Answers.Add(new CapitalAnswer(AllAnswers[0]));
Answers.Add(new CapitalAnswer(AllAnswers[1]));
Answers.Add(new CapitalAnswer(AllAnswers[2]));
Answers.Add(new CapitalAnswer(AllAnswers[3]));
break;
case AnswerType.Flag:
Answers.Add(new FlagAnswer(AllAnswers[0]));
Answers.Add(new FlagAnswer(AllAnswers[1]));
Answers.Add(new FlagAnswer(AllAnswers[2]));
Answers.Add(new FlagAnswer(AllAnswers[3]));
break;
default:
break;
}
}
public FlagQuestion(GeoData question, List <GeoData> answers, AnswerType at)
: base(question, answers, at)
{
Text = question.Flag.ToLower();
}
public Answer(GeoData data)
{
}
public CapitalAnswer(GeoData data) : base(data)
{
Text = data.Capital;
State = data.State;
}
public CountryQuestion(GeoData question, List <GeoData> answers, AnswerType at)
: base(question, answers, at)
{
Text = question.Country;
}
public CountryAnswer(GeoData data) : base(data)
{
Text = data.Country;
State = data.State;
}
public FlagAnswer(GeoData data) : base(data)
{
Text = data.Flag;
State = data.State;
}
// Die Factory Methode!! public abstract void CreateAnswers(GeoData question, List <GeoData> anwers, AnswerType at);
// Der Konstruktor ruft die Factory Methode auf.
public Question(GeoData question, List <GeoData> anwers, AnswerType at)
{
CreateAnswers(question, anwers, at);
}
public CapitalQuestion(GeoData question, List <GeoData> answers, AnswerType at)
: base(question, answers, at)
{
Text = question.Capital;
}