fix: ensure car engine is available before starting

Author: robeecodes

src/scripts/cars/Car.js

@@ -512,13 +512,13 @@ export default class Car {
      */
     _createEngineNoise() {
         // Create a player for engine noise
-        this.engine = new Tone.Player("sfx/engine.mp3").toDestination();
-        // Set volume
-        this.engine.volume.value = -12;
-        this.engine.loop = true;
-        // Connect to gain node to control proximity audio
-        this.engine.connect(this.gainNode);
-        this.engine.start();
+        this.engine = new Tone.Player("sfx/engine.mp3", () => {
+            // Set volume
+            this.engine.volume.value = -12;
+            this.engine.loop = true;
+            // Connect to gain node to control proximity audio
+            this.engine.connect(this.gainNode);
+        }).toDestination();
     }
 
     /**

src/scripts/worlds/LivingRoom.js

@@ -140,6 +140,8 @@ export default class LivingRoom extends World {
         // Wait for assets to load before proceeding
         const checkLoaded = () => {
             if ((this.radio && this.radio.isLoaded) && (this.tv && this.tv.isLoaded)) {
+                // Start car engine
+                this.car.engine.start();
                 this.isLoaded = true;
             } else {
                 requestAnimationFrame(checkLoaded); // Check again in the next frame

src/scripts/worlds/World.js

@@ -282,6 +282,7 @@ export default class World {
      */
     _start() {
         this.isLoaded = true;
+        this.car.engine.start();
     }
 
     /**