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More harmony through chord notes

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Dejvino
2026-03-10 21:58:03 +01:00
parent f34f960358
commit aa51e1e95a
13 changed files with 269 additions and 242 deletions
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LSystemStrategy.h
+11 -7
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@@ -29,9 +29,13 @@ const uint8_t numRuleSets = sizeof(ruleSets) / sizeof(RuleSet);
class LSystemStrategy : public MelodyStrategy {
public:
void generate(Step (*sequence)[NUM_STEPS], int track, int numSteps, int* scaleNotes, int numScaleNotes, int seed, int intensity) override {
void generate(Step (*sequence)[NUM_STEPS], int track, int numSteps, int* scaleNotes, int numScaleNotes, int* chordNotes, int numChordNotes, int seed, int intensity) override {
randomSeed(seed);
if (numScaleNotes == 0) {
int* sourceNotes = (numChordNotes > 0) ? chordNotes : scaleNotes;
int sourceNoteCount = (numChordNotes > 0) ? numChordNotes : numScaleNotes;
if (sourceNoteCount == 0) {
// Fill with silence if no scale
for (int i = 0; i < numSteps; i++) {
sequence[track][i].note = -1;
@@ -68,7 +72,7 @@ public:
// 2. Interpret the string to create the sequence
int stepIndex = 0;
int noteIndex = random(numScaleNotes);
int noteIndex = random(sourceNoteCount);
int octave = 4;
// Stack for branching rules
@@ -86,16 +90,16 @@ public:
switch(c) {
case 'F': case 'G': case 'A': case 'B': // Characters that draw notes
sequence[track][stepIndex].note = 12 * octave + scaleNotes[noteIndex];
sequence[track][stepIndex].note = 12 * octave + sourceNotes[noteIndex];
sequence[track][stepIndex].accent = (random(100) < accentChance);
sequence[track][stepIndex].tie = (random(100) < tieChance);
stepIndex++;
break;
case '+': // Go up in scale
noteIndex = (noteIndex + 1) % numScaleNotes;
noteIndex = (noteIndex + 1) % sourceNoteCount;
break;
case '-': // Go down in scale
noteIndex = (noteIndex - 1 + numScaleNotes) % numScaleNotes;
noteIndex = (noteIndex - 1 + sourceNoteCount) % sourceNoteCount;
break;
case '[': // Push current state
if(stack_ptr < 8) {
@@ -140,7 +144,7 @@ public:
sortArray(scaleNotes, numScaleNotes);
}
void mutate(Step (*sequence)[NUM_STEPS], int track, int numSteps, int* scaleNotes, int numScaleNotes, int intensity) override {
void mutate(Step (*sequence)[NUM_STEPS], int track, int numSteps, int* scaleNotes, int numScaleNotes, int* chordNotes, int numChordNotes, int intensity) override {
// Swap two non-rest steps to create a variation
int s1 = random(numSteps);
int s2 = random(numSteps);