Merge pull request #183 from dli7319/controllers

Fix errors when `options.controllers.enabled = false;`

Author: dli7319

src/input/MouseController.ts

@@ -40,7 +40,7 @@ export class MouseController
   forwardVector = new THREE.Vector3(0, 0, -1);
 
   /** A reference to the main scene camera. */
-  camera!: THREE.Camera;
+  camera?: THREE.Camera;
 
   constructor() {
     super();
@@ -63,7 +63,7 @@ export class MouseController
     if (!this.userData.connected) {
       return;
     }
-    this.position.copy(this.camera.position);
+    this.position.copy(this.camera!.position);
   }
 
   /**
@@ -73,6 +73,9 @@ export class MouseController
    * @param event - The mouse event containing clientX and clientY coordinates.
    */
   updateMousePositionFromEvent(event: MouseEvent) {
+    if (this.camera === undefined) {
+      return;
+    }
     // The controller's origin point is always the camera's position.
     this.position.copy(this.camera.position);
 

src/simulator/controlModes/SimulatorControlMode.ts

@@ -81,7 +81,7 @@ export class SimulatorControlMode {
 
   updateControllerPositions() {
     this.camera.updateMatrixWorld();
-    for (let i = 0; i < 2; i++) {
+    for (let i = 0; i < 2 && i < this.input.controllers.length; i++) {
       const controller = this.input.controllers[i];
       controller.position
         .copy(this.simulatorControllerState.localControllerPositions[i])