Melody strategy

2026-02-17 00:19:39 +01:00
parent 89f9821f5a
commit 1e475eeaa5
5 changed files with 180 additions and 50 deletions
@@ -0,0 +1,47 @@
+#ifndef ARP_STRATEGY_H
+#define ARP_STRATEGY_H
+
+#include "MelodyStrategy.h"
+#include <Arduino.h>
+
+class ArpStrategy : public MelodyStrategy {
+public:
+    void generate(Step* sequence, int numSteps, int* scaleNotes, int numScaleNotes, int seed) override {
+        randomSeed(seed);
+        if (numScaleNotes == 0) return;
+
+        int currentNoteIndex = 0;
+        int octave = 4;
+
+        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;
+
+            currentNoteIndex++;
+            if (currentNoteIndex >= numScaleNotes) {
+                currentNoteIndex = 0;
+                octave++;
+                if (octave > 5) octave = 3;
+            }
+        }
+        randomSeed(micros());
+    }
+
+    void mutate(Step* sequence, int numSteps, int* scaleNotes, int numScaleNotes) override {
+        // Swap two notes
+        int s1 = random(numSteps);
+        int s2 = random(numSteps);
+        if (sequence[s1].note != -1 && sequence[s2].note != -1) {
+             int8_t temp = sequence[s1].note;
+             sequence[s1].note = sequence[s2].note;
+             sequence[s2].note = temp;
+        }
+    }
+
+    const char* getName() override {
+        return "Arp";
+    }
+};
+
+#endif