public void AddRandomTracks(TrackDatabase database, HashSet<Track> ignoreTracks, string[] genres, int tracks, bool themesonly)
{
//Create a random generator
Random random = new Random();
//Create list of tracks for selection (ignoring tracks in previous playlists)
TrackCollection picklist = new TrackCollection();
foreach (Track track in database.Tracks) {
foreach (string s in genres) {
//Genre in Round and track not already used
if (String.Compare(track.Genre, s, true) == 0 && !ignoreTracks.Contains(track)) {
// Check whether only themes to be chosen
if (track.IsTheme || !themesonly) {
//Add to pick list
picklist.Add(track);
}
}
}
}
// Shuffle the order first
picklist.Shuffle();
// Now sort by times played
picklist.Sort(new Track.TrackTimesPlayedComparer());
// Pick random tracks
for (int i = 0; i < tracks; i++) {
//Check if the list has any tunes
if (picklist.Count == 0)
break;
//Pick a random track from the selection list
int ri = random.Next(0, picklist.Count);
//Save in playlist
Add(picklist[ri]);
//Remove track from selection list
picklist.RemoveAt(ri);
}
}
public FastAnswerForm(TrackDatabase db, string[] genres = null)
{
mDatabase = db;
// Initialise the form
InitializeComponent();
pnlQuestions.Visible = true;
pnlConclusion.Visible = false;
// Create playlist
mPlaylist = mDatabase.Tracks.GetFromGenre(genres);
mPlaylist.Shuffle();
// Now sort by times played
mPlaylist.Sort(new Track.TrackTimesPlayedComparer());
// Start the session
mSessionTime.Start();
NextTrack();
}
public void AddRange(TrackCollection tracks)
{
this.InnerList.AddRange(tracks);
}
public TrackCollection GetFromGenre(string[] genres)
{
TrackCollection newtc = new TrackCollection();
foreach (Track t in this)
foreach (string g in genres)
if (String.Compare(t.Genre, g, true) == 0)
newtc.Add(t);
return newtc;
}
public TrackCollection GetFromCategory(string[] categories)
{
TrackCollection newtc = new TrackCollection();
foreach (Track t in this)
foreach (string g in categories)
if (String.Compare(t.Category, g, true) == 0)
newtc.Add(t);
return newtc;
}