🎵🎨 Jan 8 Visual & Audio Systems Complete - Biome Music + Spatial Triggers + Test Scene

✅ SYSTEMS CREATED:

**1. BiomeMusicSystem.js (Background Music):**
- Automatic music switching based on player position
- Smooth cross-fade transitions (2 seconds)
- Biome-specific tracks (grassland, forest, town, combat)
- Night music override (8pm-6am)
- Volume control + master volume
- Loop support for ambient tracks

**2. AudioTriggerSystem.js (Spatial Audio):**
- Trigger audio when player enters specific tiles
- One-time trigger support (play only once)
- Radius detection (exact tile or area)
- Delay support before audio plays
- Callback functions after audio
- Visual debug markers (green circle + 🔊 icon)
- Trigger history tracking

**3. TestVisualAudioScene.js (DEMO SCENE):**
🎬 Complete visual & audio demonstration:

**Visual Effects:**
- Kai character with 8 animated dreadlocks
- Dreadlocks wave in wind (sine wave animation)
- 20 falling leaves (continuous spawn)
- Leaf rotation + side-sway animation
- WASD movement controls
- Camera follow with zoom

**Audio Triggers:**
- Yellow tile at (10, 7) triggers Kai's voice
- Plays: 'My name is Kai, and I will find my sister.'
- One-time trigger (won't repeat)
- Speech bubble appears after trigger
- Visual feedback (green flash)

**Scene Features:**
- Grass tile grid (20x15)
- Alternating light/dark grass pattern
- Instructions overlay
- ESC to exit scene

**Integration:**
- Added to index.html
- Added to game.js scene list
- Ready to launch: game.scene.start('TestVisualAudioScene')

🎯 Test Command:
Open browser console and type:
game.scene.start('TestVisualAudioScene')

📝 For music:
1. Add music files to /assets/audio/music/
2. System automatically cross-fades on biome change
3. Night music override active 8pm-6am

index.html

@@ -244,6 +244,11 @@
     <!-- 🧪 TEST SCENE -->
     <script src="src/scenes/SystemsTestScene.js"></script>
 
+    <!-- 🎵 NEW AUDIO SYSTEMS - JAN 8 2026 -->
+    <script src="src/systems/BiomeMusicSystem.js"></script> <!-- Background music cross-fade -->
+    <script src="src/systems/AudioTriggerSystem.js"></script> <!-- Spatial audio triggers -->
+    <script src="src/scenes/TestVisualAudioScene.js"></script> <!-- Visual & Audio Test Scene -->
+
     <script src="src/scenes/GameScene.js"></script>
 
     <script src="src/game.js"></script>