public BasedScale FindScale(List <Scale> scales, List <Scale> chords, int key_pitchclass)
{
List <BasedScale> compatiblescales = new List <BasedScale>();
bool foundscale = false;
for (int t = 0; t < 12; t++)
{
for (int i = 0; i < scales.Count; i++)
{
BasedScale s = new BasedScale(key_pitchclass + t, i);
if (s.HasChord(scales, chords, this))
{
compatiblescales.Add(s);
foundscale = true;
}
}
if (foundscale)
{
break;
}
}
//Debug.Log(Time.time.ToString() + " compatiblescales = " + compatiblescales.Count.ToString());
return(Utility.RandomElement(compatiblescales));
}
public JazzGenerator(
List <Scale> scales,
List <Scale> chords,
List <Progression> progressions)
{
Progression progression = progressions[Random.Range(0, progressions.Count)];
key_pitchclass = Random.Range(0, 12);
time_signature = Random.Range(3, 11);
CalcHalfway();
bool firsthalf = true;
int lastnote = -1000;
int accompanimenttype = Random.Range(0, 9);
float motheaten = Random.Range(0.25f, 1.0f);
//Debug.Log("moth% = " + motheaten.ToString());
melody = new List <int>();
accompaniment = new List <int>();
int[,] ranges = { { -12, 0 }, { 0, 12 }, { -6, 6 }, { 6, 18 }, { -18, -6 } };
int leadrange = Random.Range(0, ranges.GetLength(0));
int accompanimentrange = Random.Range(0, ranges.GetLength(0));
for (int i = 0; i < progression.chords.Count; i++)
{
int notecount = firsthalf ? bar_halfway - 1 : time_signature - (bar_halfway - 1);
for (int j = 0; j < notecount; j++)
{
if (j == 0)
{
accompaniment.Add(progression.chords[i].pitchclass);
}
else
{
switch (accompanimenttype)
{
case 0:
accompaniment.Add(666);
break;
case 1:
accompaniment.Add(666);
break;
case 2:
accompaniment.Add(666);
break;
case 3:
accompaniment.Add(progression.chords[i].GetNote(ranges[accompanimentrange, 0], ranges[accompanimentrange, 1], j % 3, chords));
break;
case 4:
accompaniment.Add(progression.chords[i].GetNote(ranges[accompanimentrange, 0], ranges[accompanimentrange, 1], (2 - j) % 3, chords));
break;
case 5:
accompaniment.Add(progression.chords[i].GetNote(ranges[accompanimentrange, 0], ranges[accompanimentrange, 1], j % 4, chords));
break;
case 6:
accompaniment.Add(progression.chords[i].GetNote(ranges[accompanimentrange, 0], ranges[accompanimentrange, 1], (3 - j) % 4, chords));
break;
case 7:
if (j == 1)
{
accompaniment.Add(progression.chords[i].GetNote(ranges[accompanimentrange, 0], ranges[accompanimentrange, 1], j % 3, chords));
}
else
{
accompaniment.Add(666);
}
break;
case 8:
if (j % 2 == 0)
{
accompaniment.Add(progression.chords[i].GetNote(ranges[accompanimentrange, 0], ranges[accompanimentrange, 1], j % 3, chords));
}
else
{
accompaniment.Add(666);
}
break;
}
}
int note = progression.chords[i].RandomNote(ranges[leadrange, 0], ranges[leadrange, 1], chords);
if (note == lastnote)
{
note = progression.chords[i].RandomNote(ranges[leadrange, 0], ranges[leadrange, 1], chords);
}
if (j == 0 || Random.value < motheaten)
{
melody.Add(note);
}
else
{
melody.Add(666);
}
lastnote = note;
}
firsthalf = !firsthalf;
}
// do second pass to add passing notes
List <BasedScale> chordscales = new List <BasedScale>();
for (int i = 0; i < progression.chords.Count; i++)
{
BasedScale scale = progression.chords[i].FindScale(scales, chords, key_pitchclass);
chordscales.Add(scale);
}
float passingchance = Random.Range(0.6f, 0.1f);
float auxilliarychance = Random.Range(0.6f, 0.1f);
float auxilliaryupperchance = Random.value;
float extrachordchance = Random.Range(0.0f, 0.25f);
for (int i = 0; i < (melody.Count - 1); i += 2)
{
int notea = melody[i];
int noteb = melody[i + 1];
if (notea == 666 || noteb == 666)
{
melody.Insert(i + 1, 666);
continue;
}
int bar = (i / 2) / time_signature;
int beat = (i / 2) - bar * time_signature;
int chord_index = beat < bar_halfway ? 2 * bar : 2 * bar + 1;
//Debug.Log(Random.value.ToString() + "chord index vs chord length " + bar.ToString()+"-"+beat.ToString()+" \t "+chord_index.ToString() + "," + progression.chords.Count.ToString() +
// " \t " + "barpos :" + beat.ToString() + "," + bar_halfway.ToString());
// BasedChord chord = progression.chords[chord_index];
BasedScale scale = chordscales[chord_index];
int scaledistance = scale.ScaleDistance(scales, notea, noteb);
if (Random.value < extrachordchance)
{
int lower = Mathf.Min(notea, noteb);
int upper = Mathf.Max(notea, noteb);
int note = scale.RandomNoteBetween(scales, lower - 5, upper + 5);
if (note != notea && note != noteb)
{
melody.Insert(i + 1, note);
}
else
{
melody.Insert(i + 1, 666);
}
}
else if (scaledistance == 2 && Random.value <= passingchance)
{
int notebetween = scale.RandomNoteBetween(scales, notea, noteb);
melody.Insert(i + 1, notebetween);
}
else if (scaledistance == 0 && Random.value <= auxilliarychance)
{
int auxilliary = scale.AuxilliaryNote(scales, notea, Random.value < auxilliaryupperchance);
melody.Insert(i + 1, auxilliary);
}
else
{
melody.Insert(i + 1, 666);
}
}
melody.Add(666);
//Debug.Log("melody length : " + melody.Count.ToString() + " - " + accompaniment.Count.ToString());
}
