Missing file

src/systems/cameras.js

+// Used for tracking and managing camera tools in the scene
+AFRAME.registerSystem("cameras", {
+  init() {
+    this.cameraEls = [];
+  },
+
+  register(el) {
+    this.cameraEls.push(el);
+    el.addEventListener("ownership-changed", this._onOwnershipChange);
+    this.currentCamera = null;
+  },
+
+  deregister(el) {
+    this.cameraEls = this.cameraEls.filter(c => c !== el);
+    el.removeEventListener("ownership-changed", this._onOwnershipChange);
+    this.currentCamera = null;
+  },
+
+  getCurrent() {
+    if (this.currentCamera) return this.currentCamera;
+    this.currentCamera = this.cameraEls.find(NAF.utils.isMine);
+    return this.currentCamera;
+  },
+
+  _onOwnershipChange() {
+    this.currentCamera = null;
+  }
+});