private List <int> GenerateMelody(int beatsPerTab)
{
// Create a probability array
const int joint = 1; const int withinTierce = 2; const int outsideTierce = 3; const int repeat = 4;
Dictionary <int, int> cases = new Dictionary <int, int>();
cases.Add(joint, JointNoteProb);
cases.Add(withinTierce, NoteWithinTierceProb);
cases.Add(outsideTierce, NoteOutsideTierceProb);
cases.Add(repeat, RepeatNoteProb);
int[] probArray = Probability.CreateProbabilityArray(cases);
// Creating the melody by adding a first random note
int firstNote = RandomGenerator.Next(MelodyNotes.Min, MelodyNotes.Max);
List <int> melody = new List <int>();
melody.Add(firstNote);
// Add notes to all beats using given probabilities
for (int i = 1; i < NumberTabMelody * beatsPerTab; i++)
{
int choice = probArray[RandomGenerator.Next(0, 100)];
int note = -1;
int lastNote = melody[i - 1];
switch (choice)
{
case joint:
List <int> jointNotes = MusicCreator2.GetJointNotes(lastNote, MelodyNotes.Min, MelodyNotes.Max);
note = jointNotes[RandomGenerator.Next(0, jointNotes.Count)];
break;
case withinTierce:
List <int> withinTierceNotes = MusicCreator2.GetNotesWithinInterval(lastNote, 3, MelodyNotes.Min, MelodyNotes.Max);
List <int> withinOneNote = MusicCreator2.GetNotesWithinInterval(lastNote, 1, MelodyNotes.Min, MelodyNotes.Max);
withinTierceNotes.RemoveAll(n => withinOneNote.Contains(n));
note = withinTierceNotes[RandomGenerator.Next(0, withinTierceNotes.Count)];
break;
case outsideTierce:
List <int> withinTierceN = MusicCreator2.GetNotesWithinInterval(lastNote, 3, MelodyNotes.Min, MelodyNotes.Max);
List <int> withinOctave = MusicCreator2.GetNotesWithinInterval(lastNote, 7, MelodyNotes.Min, MelodyNotes.Max);
withinOctave.RemoveAll(n => withinTierceN.Contains(n));
note = withinOctave[RandomGenerator.Next(0, withinOctave.Count)];
break;
case repeat:
note = lastNote;
break;
default:
Debug.LogError("Problem with the choice : " + choice);
break;
}
melody.Add(note);
}
// TODO add silences and continue by avoiding making too large silence or too large notes
// Add some silences randomly by replacing notes
int numberSilence = RandomGenerator.Next(NumberSilenceInMelody.Min, NumberSilenceInMelody.Max);
PutNoteRandomlyIn(MusicPlayer.SILENCE, melody, numberSilence);
// Add some continue randomly by replacing notes
int numberContinues = RandomGenerator.Next(NumberContinueInMelody.Min, NumberContinueInMelody.Max);
PutNoteRandomlyIn(MusicPlayer.CONTINUE, melody, numberContinues);
return(melody);
}
