How to check if Oculus Go controller on OVRInputModule is clicking on GUI object or not

Question

I'm a beginner of Unity and I've been trying to make an app for the Oculus go. So I implemented the Oculus go Controller working and some buttons on the screen. I can click the buttons and call the functions connected to the buttons. What I wanna do is I want to trigger some action when the controller clicked on not UI buttons.

I've tried these methods but I got false every time even if the button shows highlight color when the pointer is on the button.

Physics.Raycast(..)
EventSystem.current.IsPointerOverGameObject

Ray laserPointer = new Ray(rightHandAnchor.position, rightHandAnchor.forward);
RaycastHit hit;
bool hitOrNot = Physics.Raycast(laserPointer, out hit, maxRayDistance);

and

bool hitOrNot = EventSystem.current.IsPointerOverGameObject;

Answer 1

You need to have the OVRInputModule in your scene's EventSystem object (you can delete the "Standard Input Module".

This will allow the laser pointer to interface with the UI system using standard-like events.

The other thing to note is in order for your laser pointer to interact with normal game objects (non-UI), you must add the OVRPhysicsRaycaster to your OVRCameraRig object in your scene.

For the OVRInputModule, you will need set the "Ray Transform" property to either the rightHandAnchor or leftHandAnchor in your LocalAvatar object.

EDIT:

I forgot to mention that your canvas(es) need to have the OVRRaycaster component added as well. The OVRInputModule will basically overload all the normal input events, so your canvas buttons will respond to IPointerEnterHandler events just like they would if you were using a mouse.

using UnityEngine;
using UnityEngine.EventSystems;

public class YourButton : MonoBehavior, IPointerEnterHandler, IPointerClickHandler
{
    public void OnPointerEnter(PointerEventData eventData)
    {
        Debug.Log("Raycast hit!");
    }

    public void OnPointerClick(PointerEventData eventData)
    {
        Debug.Log("Clicked!");
    }
}

With all of this you shouldn't really need to manually do raycasting in your script unless you have special needs for it.

Furthermore, whatever "Event Mask" you select for your OVRPhysicsRaycaster in the camera rig, any normal (non-UI) 3D object that is in that layer will detect the same IPointerEnterHandler and IPointer...Handler events just like a UI button, so you can use the same code for those objects as well, not just the UI objects.