public static void SortByTimestamp(List <IVocabItem> items)
{
//after this, sort these timestamp array and make every step for both
//the timestamp array and the Words array
for (int i = 0; i < items.Count - 1; ++i)
{
for (int j = i + 1; j < items.Count; ++j)
{
if (items[i].TimeStamp > items[j].TimeStamp)
{
IVocabItem hv = items[i];
items[i] = items[j];
items[j] = hv;
}
}
}
}
public static void EvaluateWord(int grade)
{
IVocabItem activeItem = VocabData.ActiveItem;
int lastRound = activeItem.LastRound;
int nextRound = activeItem.NextRound;
int repetition = nextRound - lastRound;
activeItem.TimeStamp = ++AppSettings.TimeStamp;
if (grade > 2)
{
if (repetition == 0)
{
++nextRound;
}
else if (repetition == 1)
{
nextRound += 3;
}
else
{
nextRound = lastRound + (int)Math.Round(repetition * activeItem.EFactor);
}
++VocabData.ItemsCorrect;
--VocabData.ItemsLeft;
}
else
{
nextRound = AppSettings.VocabRound;
++VocabData.ItemsWrong;
VocabData.ActiveItems.Add(activeItem);
}
lastRound = AppSettings.VocabRound;
activeItem.EFactor += -0.8f + 0.28f * grade - 0.02f * grade * grade;
activeItem.EFactor = Math.Max(1.3f, activeItem.EFactor);
activeItem.NextRound = nextRound;
activeItem.LastRound = lastRound;
}
public void UpdateVocabSuccessRate(IVocabItem vocabItem, bool isCorrect)
{
if (isCorrect)
vocabItem.TallyCorrectAnswer();
}
private void ResetWithNewVocab()
{
VocabStudyGroup selectedStudyGroup = (VocabStudyGroup)StudyGroupComboBox.SelectedItem;
if(selectedStudyGroup.IsCompleted)
{
MessageBox.Show("You have completed this study group", "Study Group Completed", MessageBoxButton.OK, MessageBoxImage.Information);
StudyGroupComboBox.SelectedIndex = 0;
selectedStudyGroup = (VocabStudyGroup)StudyGroupComboBox.SelectedItem;
}
_currentVocabItem = _databaseManager.GetRandomVocab(selectedStudyGroup);
ForeignVocabLabel.Content = _currentVocabItem.ForeignLanguageDefinition;
GuessKnownVocabTextBox.Text = String.Empty;
GuessKnownVocabTextBox.Foreground = Brushes.Black;
CorrectKnownVocabLabel.Content = String.Empty;
VerifyVocabButton.IsEnabled = true;
_hasBeenVerified = false;
}
private void UpdateScore(IVocabItem vocabItem, bool isCorrect)
{
_databaseManager.UpdateVocabSuccessRate(vocabItem, isCorrect);
if (isCorrect)
_questionsCorrect++;
_questionsAsked++;
ScoreValueLabel.Content = String.Format("{0} of {1}", _questionsCorrect, _questionsAsked);
}
