67 lines
2.4 KiB
C++
67 lines
2.4 KiB
C++
#ifndef LUCKY_STRATEGY_H
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#define LUCKY_STRATEGY_H
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#include "MelodyStrategy.h"
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#include <Arduino.h>
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class LuckyStrategy : public MelodyStrategy {
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public:
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void generate(Step (*sequence)[NUM_STEPS], int track, int numSteps, int* scaleNotes, int numScaleNotes, int* chordNotes, int numChordNotes, int seed, int intensity) override {
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randomSeed(seed);
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int noteChance = intensity * 9; // 10% to 90%
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int accentChance = intensity * 6; // 6% to 60%
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for (int i = 0; i < numSteps; i++) {
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int octave = random(3) + 3; // 3, 4, 5 (Base is 4)
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int note = -1;
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if (random(100) < noteChance) {
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if (numChordNotes > 0) {
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note = 12 * octave + chordNotes[random(numChordNotes)];
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} else if (numScaleNotes > 0) {
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note = 12 * octave + scaleNotes[random(numScaleNotes)];
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}
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}
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sequence[track][i].note = note;
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sequence[track][i].accent = (random(100) < accentChance);
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sequence[track][i].tie = (random(100) < 20);
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}
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randomSeed(micros());
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}
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void generateScale(int* scaleNotes, int& numScaleNotes) override {
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numScaleNotes = random(3, 13); // 3 to 12 notes
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for (int i = 0; i < 12; i++) {
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scaleNotes[i] = i; // Fill with all notes
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}
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// Shuffle
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for (int i = 0; i < 12; i++) {
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int j = random(12);
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int temp = scaleNotes[i];
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scaleNotes[i] = scaleNotes[j];
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scaleNotes[j] = temp;
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}
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sortArray(scaleNotes, numScaleNotes);
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}
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void mutate(Step (*sequence)[NUM_STEPS], int track, int numSteps, int* scaleNotes, int numScaleNotes, int* chordNotes, int numChordNotes, int intensity) override {
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// Mutate 1 or 2 steps
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int count = random(1, 3);
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for (int i = 0; i < count; i++) {
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int s = random(numSteps);
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if (sequence[track][s].note != -1) {
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int r = random(100);
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if (r < 30) sequence[track][s].accent = !sequence[track][s].accent;
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else if (r < 60) sequence[track][s].tie = !sequence[track][s].tie;
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else if (r < 80) sequence[track][s].note += 12; // Up octave
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else sequence[track][s].note -= 12; // Down octave
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}
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}
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}
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const char* getName() override {
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return "Lucky";
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}
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};
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#endif |