wait for audio buffer source when restarting

src/components/song.js

@@ -124,6 +124,7 @@ AFRAME.registerComponent('song', {
     if (this.source) { this.source.disconnect(); }
     this.data.analyserEl.addEventListener('audioanalyserbuffersource', evt => {
       this.source = evt.detail;
+      this.el.sceneEl.emit('songloadfinish', null, false);
       if (this.data.isBeatsPreloaded) { this.source.start(); }
     }, ONCE);
     this.audioAnalyser.refreshSource();

src/state/index.js

@@ -133,6 +133,7 @@ AFRAME.registerState({
       state.isBeatsPreloaded = false;
       state.isGameOver = false;
       state.isPaused = false;
+      state.isSongLoading = true;
     },
 
     gamemenuexit: (state) => {