Sync with published result of episode 19.

public/js/Level.js

@@ -8,9 +8,10 @@ export default class Level {
         this.gravity = 1500;
         this.totalTime = 0;
 
+        this.music = new MusicController();
+
         this.comp = new Compositor();
         this.entities = new Set();
-        this.music = new MusicController();
 
         this.entityCollider = new EntityCollider(this.entities);
         this.tileCollider = new TileCollider();

public/js/MusicController.js

@@ -6,4 +6,4 @@ export default class MusicController {
     setPlayer(player) {
         this.player = player;
     }
-}
+}

public/js/MusicPlayer.js

@@ -1,17 +1,17 @@
 export default class MusicPlayer {
-    constructor(audio) {
+    constructor() {
         this.tracks = new Map();
     }
 
     addTrack(name, url) {
         const audio = new Audio();
-        audio.src = url;
         audio.loop = true;
+        audio.src = url;
         this.tracks.set(name, audio);
     }
 
     playTrack(name) {
         const audio = this.tracks.get(name);
         audio.play();
     }
-}
+}

public/js/loaders/music.js

@@ -1,12 +1,12 @@
-import MusicPlayer from '../MusicPlayer.js';
 import {loadJSON} from '../loaders.js';
+import MusicPlayer from '../MusicPlayer.js';
 
 export function loadMusicSheet(name) {
     return loadJSON(`/music/${name}.json`)
         .then(musicSheet => {
             const musicPlayer = new MusicPlayer();
-            for (const [key, value] of Object.entries(musicSheet)) {
-                musicPlayer.addTrack(key, value.url);
+            for (const [name, track] of Object.entries(musicSheet)) {
+                musicPlayer.addTrack(name, track.url);
             }
             return musicPlayer;
         });

public/levels/1-1.json

@@ -1,6 +1,5 @@
 {
     "spriteSheet": "overworld",
-
     "musicSheet": "overworld",
 
     "patterns": {