Added different musical scale

Author: niyamax

src/components/GitSequencer.jsx

@@ -44,7 +44,7 @@ const GitSequencer = () => {
 
     // Custom hooks for audio
     const audioEngine = useAudioEngine(username, volumes, data);
-    const sequencer = useSequencer(audioEngine);
+    const sequencer = useSequencer(audioEngine, username);
 
     const {
         isPlaying,

src/hooks/useAudioEngine.js

@@ -3,16 +3,28 @@ import * as Tone from 'tone';
 
 const SCALES = {
     pentatonic: ['C4', 'D4', 'E4', 'G4', 'A4', 'C5', 'D5'],
-    lydian: ['C4', 'D4', 'E4', 'F#4', 'G4', 'A4', 'B4'],
-    dorian: ['C4', 'D4', 'Eb4', 'F4', 'G4', 'A4', 'Bb4'],
-    phrygianDom: ['C4', 'Db4', 'E4', 'F4', 'G4', 'Ab4', 'Bb4']
+    // Lydian: Bright/Dreamy. Removed the 7th(B) in low oct to avoid clutter, kept the #4(F#) for flavor.
+    lydian: ['C4', 'E4', 'F#4', 'G4', 'A4', 'C5', 'E5'],
+    // Dorian: Soulful/Jazzy. Removed the 2nd(D) to focus on the minor 3rd and major 6th.
+    dorian: ['C4', 'Eb4', 'F4', 'G4', 'A4', 'Bb4', 'C5'],
+    // Phrygian Dom: Exotic. Removed b2(Db) and b6(Ab) from melody to prevent harsh clashes.
+    phrygianDom: ['C4', 'E4', 'F4', 'G4', 'Bb4', 'C5', 'E5'],
+    // Mixolydian: Uplifting/Psychedelic (Jerry Garcia style). Major 3rd + Flat 7.
+    mixolydian: ['C4', 'E4', 'G4', 'A4', 'Bb4', 'C5', 'D5'],
+    // Harmonic Minor: Neoclassical/Dramatic. Spooky vibe with the raised 7th (B).
+    harmonicMinor: ['C4', 'Eb4', 'G4', 'Ab4', 'B4', 'C5', 'Eb5'],
+    // Hirajoshi: Japanese Pentatonic. Dark, ambient, and introspective.
+    hirajoshi: ['C4', 'Db4', 'F4', 'G4', 'Ab4', 'C5', 'Db5']
 };
 
 const CHORD_ROOTS = {
     pentatonic: ['C3', 'D3', 'E3', 'G3', 'A3', 'C4', 'D4'],
-    lydian: ['C3', 'D3', 'E3', 'F#3', 'G3', 'A3', 'B3'],
-    dorian: ['C3', 'D3', 'Eb3', 'F3', 'G3', 'A3', 'Bb3'],
-    phrygianDom: ['C3', 'Db3', 'E3', 'F3', 'G3', 'Ab3', 'Bb3']
+    lydian: ['C3', 'E3', 'G3', 'A3', 'C4', 'E4', 'F#4'],
+    dorian: ['C3', 'Eb3', 'G3', 'A3', 'Bb3', 'C4', 'F4'],
+    phrygianDom: ['C3', 'E3', 'G3', 'Bb3', 'C4', 'E4', 'F4'],
+    mixolydian: ['C3', 'E3', 'G3', 'A3', 'Bb3', 'C4', 'D4'],
+    harmonicMinor: ['C3', 'Eb3', 'G3', 'Ab3', 'B3', 'C4', 'Eb4'],
+    hirajoshi: ['C3', 'Db3', 'F3', 'G3', 'Ab3', 'C4', 'Db4']
 };
 
 const VELOCITIES = [0, 0.5, 0.6, 0.7, 0.8];

src/hooks/useSequencer.js

@@ -1,27 +1,37 @@
 import { useState, useRef, useCallback } from 'react';
 import * as Tone from 'tone';
 
-export function useSequencer(audioEngine) {
+// Helper to get signature scale based on username hash
+// Helper to get a random scale from the safe list
+const getRandomScale = () => {
+    const SCALES = ['pentatonic', 'lydian', 'dorian', 'phrygianDom', 'mixolydian', 'harmonicMinor', 'hirajoshi'];
+    return SCALES[Math.floor(Math.random() * SCALES.length)];
+};
+
+export function useSequencer(audioEngine, username) {
     const [isPlaying, setIsPlaying] = useState(false);
     const [activeCol, setActiveCol] = useState(-1);
     const [activeNotes, setActiveNotes] = useState([]);
-    const [scaleType, setScaleType] = useState('pentatonic');
+
+    // Initial scale is random for every session/refresh
+    const signatureScaleRef = useRef(getRandomScale());
+    const signatureScale = signatureScaleRef.current;
+
+    const [scaleType, setScaleType] = useState(signatureScale);
     const [currentPattern, setCurrentPattern] = useState('Zen');
     const [bpm, setBpm] = useState(80);
     const [autoScale, setAutoScale] = useState(true);
 
-    const scaleTypeRef = useRef('pentatonic');
+    const scaleTypeRef = useRef(signatureScale);
     const autoScaleRef = useRef(true);
     const sequenceRef = useRef(null);
 
     const { playNote, playChord, playKick, playSnare, playHiHat } = audioEngine;
 
     // Determine scale based on activity level
+    // FIXED: Use Single Signature Scale for consistent musical journey per user
     const getScaleForActivity = (activity) => {
-        if (activity > 50) return { scale: 'phrygianDom', pattern: 'Intense (Extreme)' };
-        if (activity > 30) return { scale: 'dorian', pattern: 'Focus (High)' };
-        if (activity > 10) return { scale: 'lydian', pattern: 'Dreamy (Med)' };
-        return { scale: 'pentatonic', pattern: 'Zen (Low)' };
+        return { scale: scaleTypeRef.current, pattern: 'Flow' };
     };
 
     // Calculate block activity (sum of levels in a 4-week block)