/// <summary>
/// Generates a Melody using the notes in this bar (lead) and a melody pattern
/// </summary>
private List <IMusicalValue> GetMelodyBar(List <IMusicalValue> bar, List <int?> pattern)
{
IMusicalValue barChord = bar[(int)Beat.One];
Note rootBarNote = CurrentMood.TonicNote;
if (barChord is Chord)
{
rootBarNote = Theory.GetNote(((Chord)barChord).Notes[0]);
}
else if (barChord is Note)
{
rootBarNote = (Note)barChord;
if (rootBarNote.Value == Tone.Rest)
{
rootBarNote = CurrentMood.TonicNote;
}
}
else
{
Debug.Log("Cannot determine the root note or chord for this bar. Shouldnt happen.");
}
List <IMusicalValue> newMelodyBar = new List <IMusicalValue>();
for (int n = 0; n < pattern.Count; n++)
{
if (pattern[n] != null)
{
newMelodyBar.Add(Theory.GetNextNoteByInterval(rootBarNote, (int)pattern[n]));
}
else
{
newMelodyBar.Add(Theory.Rest);
}
}
return(newMelodyBar);
}
public void Generate()
{
GetMood();
CurrentLead.Clear();
CurrentMelody.Clear();
var progressionGraph = GetProgressionTypeForKey(CurrentMood.Key);
//choose lead progression
Numeral tonicNumeral = Numeral.I;
if (!progressionGraph.ContainsKey(tonicNumeral))
{
tonicNumeral = Numeral.i; //this is a minor key
}
;
List <Numeral> chosenProgression = new List <Numeral>()
{
tonicNumeral
};
var node = progressionGraph[tonicNumeral];
int chordrange = UnityEngine.Random.Range(3, 6);
for (int i = 0; i < chordrange; i++)
{
var nextChord = node.Next();
chosenProgression.Add((nextChord));
if (!progressionGraph.ContainsKey(nextChord))
{
Debug.Log("Couldn't get " + nextChord + " in progressionGraph");
}
node = progressionGraph[nextChord];
}
List <IMusicalValue> generated = new List <IMusicalValue>();
BeatPattern = ChooseBeatPattern();
CurrentMelodyPatterns = GenerateMelodyPatterns(4);
int currentChord = 0;
//generate a phrase of 16 bars
for (int i = 0; i < BarSize; i++)
{
var bar = GetBar();
foreach (var beat in BeatPattern)
{
//determine if we change chords on this beat
if (ChangeOnBeat())
{
//Debug.Log("Changing Chord..");
currentChord++;
if (currentChord >= chosenProgression.Count)
{
currentChord = 0;
}
}
Chord chord = Theory.GetChordOfKey(CurrentMood.Key, chosenProgression[currentChord]);
//determine if we appregiate or not
if (Appregiate())
{
var x = (int)beat;
//appregio pattern
// 1 2 3
var pattern = UnityEngine.Random.value;
if (pattern <= 0.8)
{
foreach (var note in chord.Notes)
{
bar[x] = Theory.GetNote(note);
x++;
}
}
else
{
// 1 3 2
bar[x] = Theory.GetNote(chord.Notes[0]);
bar[x + 1] = Theory.GetNote(chord.Notes[2]);
bar[x + 2] = Theory.GetNote(chord.Notes[1]);
}
}
else
{
bar[(int)beat] = chord;
}
}
generated.AddRange(bar);
//pick a reuseable melody pattern for here
var melodyPattern = Utils.ChooseList(CurrentMelodyPatterns);
var melodyBar = GetMelodyBar(bar, melodyPattern);
CurrentMelody.AddRange(melodyBar);
}
CurrentLead = generated;
FirstPass = false;
}
