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Better arp

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This commit is contained in:
Dejvino 2026-02-17 00:49:17 +01:00
parent 6734572a67
commit 225d04a53c
6 changed files with 146 additions and 64 deletions
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100
ArpStrategy.h
View File

@ -10,24 +10,102 @@ public:
randomSeed(seed);
if (numScaleNotes == 0) return;
int currentNoteIndex = 0;
int octave = 4;
// 1. Select Subset
int subsetSize = random(2, numScaleNotes + 1);
if (subsetSize > 12) subsetSize = 12;
int subset[12];
for (int i = 0; i < numSteps; i++) {
sequence[i].note = 12 * octave + scaleNotes[currentNoteIndex];
sequence[i].accent = (i % 4 == 0); // Accent on beat
sequence[i].tie = false;
// Create indices to shuffle
int indices[12];
for(int i=0; i<numScaleNotes; i++) indices[i] = i;
currentNoteIndex++;
if (currentNoteIndex >= numScaleNotes) {
currentNoteIndex = 0;
octave++;
if (octave > 5) octave = 3;
// Shuffle indices
for(int i=0; i<numScaleNotes; i++) {
int r = random(numScaleNotes);
int temp = indices[i];
indices[i] = indices[r];
indices[r] = temp;
}
// Pick subset
for(int i=0; i<subsetSize; i++) {
subset[i] = scaleNotes[indices[i]];
}
sortArray(subset, subsetSize);
// 2. Pick Arp Length & Pattern
int arpLength = random(2, 17); // 2 to 16
Step arpPattern[16];
int mode = random(3); // 0: Up, 1: Down, 2: Up/Down
int numOctaves = 3;
int baseOctave = 3;
int totalNotes = subsetSize * numOctaves;
int currentIndex = 0;
int direction = 1;
if (mode == 1) { // Down
currentIndex = totalNotes - 1;
direction = -1;
}
for (int i = 0; i < arpLength; i++) {
// Chance of rest (15%)
if (random(100) < 15) {
arpPattern[i].note = -1;
arpPattern[i].accent = false;
arpPattern[i].tie = false;
} else {
int octaveOffset = currentIndex / subsetSize;
int noteIndex = currentIndex % subsetSize;
int octave = baseOctave + octaveOffset;
arpPattern[i].note = 12 * octave + subset[noteIndex];
arpPattern[i].accent = (i % 4 == 0); // Accent on beat
arpPattern[i].tie = false;
}
if (mode == 0) { // Up
currentIndex++;
if (currentIndex >= totalNotes) currentIndex = 0;
} else if (mode == 1) { // Down
currentIndex--;
if (currentIndex < 0) currentIndex = totalNotes - 1;
} else { // Up/Down
currentIndex += direction;
if (currentIndex >= totalNotes) {
currentIndex = max(0, totalNotes - 2);
direction = -1;
} else if (currentIndex < 0) {
currentIndex = min(totalNotes - 1, 1);
direction = 1;
}
}
}
// 3. Fill Sequence
for (int i = 0; i < numSteps; i++) {
sequence[i] = arpPattern[i % arpLength];
}
randomSeed(micros());
}
void generateScale(int* scaleNotes, int& numScaleNotes) override {
numScaleNotes = random(3, 13); // 3 to 12 notes
for (int i = 0; i < 12; i++) {
scaleNotes[i] = i; // Fill with all notes
}
// Shuffle
for (int i = 0; i < 12; i++) {
int j = random(12);
int temp = scaleNotes[i];
scaleNotes[i] = scaleNotes[j];
scaleNotes[j] = temp;
}
sortArray(scaleNotes, numScaleNotes);
}
void mutate(Step* sequence, int numSteps, int* scaleNotes, int numScaleNotes) override {
// Swap two notes
int s1 = random(numSteps);

15
LuckyStrategy.h
View File

@ -19,6 +19,21 @@ public:
randomSeed(micros());
}
void generateScale(int* scaleNotes, int& numScaleNotes) override {
numScaleNotes = random(3, 13); // 3 to 12 notes
for (int i = 0; i < 12; i++) {
scaleNotes[i] = i; // Fill with all notes
}
// Shuffle
for (int i = 0; i < 12; i++) {
int j = random(12);
int temp = scaleNotes[i];
scaleNotes[i] = scaleNotes[j];
scaleNotes[j] = temp;
}
sortArray(scaleNotes, numScaleNotes);
}
void mutate(Step* sequence, int numSteps, int* scaleNotes, int numScaleNotes) override {
// Mutate 1 or 2 steps
int count = random(1, 3);

1
MelodyStrategy.h
View File

@ -6,6 +6,7 @@
class MelodyStrategy {
public:
virtual void generate(Step* sequence, int numSteps, int* scaleNotes, int numScaleNotes, int seed) = 0;
virtual void generateScale(int* scaleNotes, int& numScaleNotes) = 0;
virtual void mutate(Step* sequence, int numSteps, int* scaleNotes, int numScaleNotes) = 0;
virtual const char* getName() = 0;
virtual ~MelodyStrategy() {}

58
RP2040_Tracker.ino
View File

@ -34,7 +34,7 @@ UIState currentState = UI_MENU_MAIN;
const char* mainMenu[] = { "Tracker", "Randomize", "Setup" };
const int mainMenuCount = sizeof(mainMenu) / sizeof(char*);
const char* randomizeMenu[] = { "Back", "Scale", "Melody", "Flavour", "Tempo", "Mutation", "Song Mode", "Theme 1", "Theme 2", "Theme 3", "Theme 4", "Theme 5", "Theme 6", "Theme 7" };
const char* randomizeMenu[] = { "Back", "Melody", "Flavour", "Scale", "Tempo", "Mutation", "Song Mode", "Theme 1", "Theme 2", "Theme 3", "Theme 4", "Theme 5", "Theme 6", "Theme 7" };
const int THEME_1_INDEX = 7;
const int randomizeMenuCount = sizeof(randomizeMenu) / sizeof(char*);
const char* setupMenu[] = { "Back", "Channel", "Save", "Load" };
@ -100,18 +100,6 @@ void readEncoder() {
}
}
void sortArray(int arr[], int size) {
for (int i = 0; i < size - 1; i++) {
for (int j = 0; j < size - i - 1; j++) {
if (arr[j] > arr[j + 1]) {
int temp = arr[j];
arr[j] = arr[j + 1];
arr[j + 1] = temp;
}
}
}
}
void saveSequence(bool quiet = false) {
int addr = 0;
EEPROM.put(addr, EEPROM_MAGIC); addr += sizeof(EEPROM_MAGIC);
@ -194,18 +182,7 @@ void setup() {
}
void generateRandomScale() {
numScaleNotes = random(3, 13); // 3 to 12 notes
for (int i = 0; i < 12; i++) {
scaleNotes[i] = i; // Fill with all notes
}
// Shuffle
for (int i = 0; i < 12; i++) {
int j = random(12);
int temp = scaleNotes[i];
scaleNotes[i] = scaleNotes[j];
scaleNotes[j] = temp;
}
sortArray(scaleNotes, numScaleNotes);
strategies[currentStrategyIndex]->generateScale(scaleNotes, numScaleNotes);
}
void generateSequenceData(int themeType, Step* target) {
@ -333,17 +310,6 @@ void handleInput() {
case UI_MENU_RANDOMIZE:
if (menuSelection == 0) { currentState = UI_MENU_MAIN; menuSelection = 1; }
if (menuSelection == 1) {
generateRandomScale(); // Scale
if (isPlaying) {
int theme = (queuedTheme != -1) ? queuedTheme : currentThemeIndex;
midi.lock();
generateSequenceData(theme, nextSequence);
sequenceChangeScheduled = true;
midi.unlock();
}
saveSequence(true);
}
if (menuSelection == 2) {
melodySeed = random(10000); // Melody
if (isPlaying) {
int theme = (queuedTheme != -1) ? queuedTheme : currentThemeIndex;
@ -354,7 +320,18 @@ void handleInput() {
}
saveSequence(true);
}
if (menuSelection == 3) currentState = UI_EDIT_FLAVOUR;
if (menuSelection == 2) currentState = UI_EDIT_FLAVOUR; // Flavour
if (menuSelection == 3) { // Scale
generateRandomScale();
if (isPlaying) {
int theme = (queuedTheme != -1) ? queuedTheme : currentThemeIndex;
midi.lock();
generateSequenceData(theme, nextSequence);
sequenceChangeScheduled = true;
midi.unlock();
}
saveSequence(true);
}
if (menuSelection == 4) currentState = UI_EDIT_TEMPO;
if (menuSelection == 5) mutationEnabled = !mutationEnabled;
if (menuSelection == 6) {
@ -398,6 +375,13 @@ void handleInput() {
break;
case UI_EDIT_FLAVOUR:
currentState = UI_MENU_RANDOMIZE;
if (isPlaying) {
queuedTheme = currentThemeIndex;
midi.lock();
generateSequenceData(currentThemeIndex, nextSequence);
sequenceChangeScheduled = true;
midi.unlock();
}
saveSequence(true);
break;
}

12
TrackerTypes.h
View File

@ -19,4 +19,16 @@ enum UIState {
UI_EDIT_FLAVOUR
};
inline void sortArray(int arr[], int size) {
for (int i = 0; i < size - 1; i++) {
for (int j = 0; j < size - i - 1; j++) {
if (arr[j] > arr[j + 1]) {
int temp = arr[j];
arr[j] = arr[j + 1];
arr[j + 1] = temp;
}
}
}
}
#endif

24
UIManager.cpp
View File

@ -146,7 +146,11 @@ void UIManager::drawMenu(const char* title, const char* items[], int count, int
display.print(F(" *"));
}
if (currentState == UI_MENU_RANDOMIZE) {
if (i == 1) { // Scale
if (i == 1) { // Melody
display.print(F(": ")); display.print(melodySeed);
} else if (i == 2) { // Flavour
display.print(F(": ")); display.print(flavourName);
} else if (i == 3) { // Scale
display.print(F(": "));
if (numScaleNotes > 0) {
const char* noteNames[] = {"C", "C#", "D", "D#", "E", "F", "F#", "G", "G#", "A", "A#", "B"};
@ -155,9 +159,7 @@ void UIManager::drawMenu(const char* title, const char* items[], int count, int
if (j < min(numScaleNotes, 6) - 1) display.print(F(" "));
}
}
} else if (i == 2) { display.print(F(": ")); display.print(melodySeed); }
else if (i == 3) { display.print(F(": ")); display.print(flavourName); }
else if (i == 4) { display.print(F(": ")); display.print(tempo); }
} else if (i == 4) { display.print(F(": ")); display.print(tempo); }
else if (i == 5) { display.print(F(": ")); display.print(mutationEnabled ? F("ON") : F("OFF")); }
else if (i == 6) { display.print(F(": ")); display.print(songModeEnabled ? F("ON") : F("OFF")); }
}
@ -245,23 +247,13 @@ void UIManager::updateLeds(const Step* sequence, int navSelection, int playbackS
else { c[1] = color; if (sequence[s].accent) { c[0] = dimColor; c[2] = dimColor; } }
}
int stepNavIndex = navSelection - 1;
if (isPlaying) {
c[3] = pixels.Color(0, 50, 0);
if (songModeEnabled && s >= NUM_STEPS/2 && x >= (8 - min(songRepeatsRemaining, 8))) {
c[3] = (songRepeatsRemaining == 1 && x == 7 && (millis()/250)%2) ? pixels.Color(0, 250, 0) : pixels.Color(80, 100, 0);
}
} else if (currentState == UI_TRACKER && s == stepNavIndex) {
c[3] = isEditing ? pixels.Color(50, 0, 0) : pixels.Color(40, 40, 40);
} else if (c[3] == 0 && (isPlaying && s == playbackStep || (!isPlaying && currentState == UI_TRACKER && s == stepNavIndex))) {
// Cursor logic handled above, this block seems redundant or malformed in original logic translation, simplifying:
}
// Apply cursor color logic from original code more strictly
uint32_t cursorColor = 0;
if (isPlaying) {
cursorColor = pixels.Color(0, 50, 0);
if (songModeEnabled && s >= 56) {
if (songModeEnabled && s >= 8) {
int repeats = min(songRepeatsRemaining, 8);
if (x >= (8 - repeats)) cursorColor = (songRepeatsRemaining == 1 && x == 7 && (millis()/250)%2) ? pixels.Color(255, 200, 0) : pixels.Color(154, 205, 50);
if (x >= (8 - repeats)) cursorColor = (songRepeatsRemaining == 1 && x == 7 && (millis()/250)%2) ? pixels.Color(255, 200, 0) : pixels.Color(100, 220, 40);
}
} else if (currentState == UI_TRACKER) {
cursorColor = isEditing ? pixels.Color(50, 0, 0) : pixels.Color(40, 40, 40);