public void Add(Score score)
{
if (score == null) throw new ArgumentNullException("score");
Application.Current.Dispatcher.Invoke(() =>
{
if (TopScores.Count < NUMBER_TOP_SCORES)
{
// Insert new top score
InsertScoreAtPosition(TopScores, score);
}
else if (TopScores.Any(s => s.Duration > score.Duration))
{
// Take last entry
var worstScore = TopScores.Last();
TopScores.Remove(worstScore);
// Insert worst score to normal list at the beginning
Scores.Insert(0, worstScore);
// Insert new top score
InsertScoreAtPosition(TopScores, score);
}
else
{
// Insert into normal list
InsertScoreAtPosition(Scores, score);
}
UpdateRank();
});
}
public IEnumerable<Score> LoadScores(string fileName)
{
var scores = new List<Score>();
try {
using (var reader = XmlReader.Create(fileName))
{
while (reader.Read())
{
// Only detect start elements.
if (!reader.IsStartElement()) continue;
// Get element name and switch on it.
if (reader.Name == "Score")
{
var score = new Score();
var nameAttribute = reader["Name"];
if (nameAttribute != null)
{
score.Name = nameAttribute;
}
var durationAttribute = reader["Duration"];
if (durationAttribute != null)
{
score.Duration = TimeSpan.Parse(durationAttribute);
}
scores.Add(score);
}
}
}
}
catch
{
Console.WriteLine("Could not load scores");
}
return scores;
}
private void InsertScoreAtPosition(ObservableCollection<Score> scores, Score score)
{
if (scores == null) throw new ArgumentNullException("scores");
Application.Current.Dispatcher.Invoke(() =>
{
for (var i = 0; i < scores.Count; i++)
{
if (scores.ElementAt(i).Duration <= score.Duration) continue;
scores.Insert(i, score);
return;
}
scores.Add(score);
});
}
