fix not being to have more than one trail in scene (fixes #80)

src/components/beat-loader.js

@@ -122,7 +122,7 @@ AFRAME.registerComponent('beat-loader', {
         this.beatsHeadStart -= delta;
       }
     }
-    
+
     this.lastTime = lastTime + delta;
   },
 

src/components/trail.js

@@ -1,7 +1,8 @@
 AFRAME.registerComponent('trail', {
   schema: {
     color: {type: 'color'},
-    enabled: {default: false}
+    enabled: {default: false},
+    hand: {type: 'string'}
   },
 
   init: function () {
@@ -61,7 +62,7 @@ AFRAME.registerComponent('trail', {
     mesh.vertices = vertices;
     //mesh.scale.set(0.4, 0.4, 0.4);
     //mesh.rotation.set(0, 0, Math.PI / 2.0);
-    this.el.sceneEl.setObject3D('trail', mesh);
+    this.el.sceneEl.setObject3D(`trail__${this.data.hand}`, mesh);
   },
 
   addLayer: function (length) {

src/index.html

@@ -136,7 +136,7 @@
             saber-controls="hand: {{ hand }}"
             thumb-controls
             thumb-controls-debug="enabled: false; hand: {{ hand }}; controllerType: vive-controls"
-            trail="color: {{ bladeColor }}">
+            trail="color: {{ bladeColor }}; hand: {{ hand }}">
             <a-entity
               id="{{ hand }}Laser"
               bind__visible="activeHand === '{{ hand }}'"