Stratasys-450mc-VR/Assets/Scripts/Interactions/ManualInteractionEvents.cs

using System;
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.Events;
using UnityEngine.XR.Interaction.Toolkit;

public class ManualInteractionEvents : MonoBehaviour
{
    [SerializeField] private XRSocketInteractor interactor;

    [SerializeField] private HoverEnterEvent onHoverEnter;
    [SerializeField] private HoverExitEvent onHoverExit;
    [SerializeField] private SelectEnterEvent onSelectEnter;
    [SerializeField] private SelectExitEvent onSelectExit;
    
    public void AddListeners()
    {
        if (interactor == null) return;
        
        Debug.Log($"Adding listeners to {interactor.name}");
        
        if (onHoverEnter.GetPersistentEventCount() > 0)
        {
            interactor.hoverEntered.AddListener(onHoverEnter.Invoke);
        }

        if (onHoverExit.GetPersistentEventCount() > 0)
        {
            interactor.hoverExited.AddListener(onHoverExit.Invoke);
        }

        if (onSelectEnter.GetPersistentEventCount() > 0)
        {
            interactor.selectEntered.AddListener(onSelectEnter.Invoke);
        }

        if (onSelectExit.GetPersistentEventCount() > 0)
        {
            interactor.selectExited.AddListener(onSelectExit.Invoke);
        }
    }

    public void RemoveListeners()
    {
        if (interactor == null) return;
        
        Debug.Log($"Removing listeners from {interactor.name}");
        
        if (onHoverEnter != null && onHoverEnter.GetPersistentEventCount() > 0)
        {
            interactor.hoverEntered.RemoveListener(onHoverEnter.Invoke);
        }

        if (onHoverExit != null && onHoverExit.GetPersistentEventCount() > 0)
        {
            interactor.hoverExited.RemoveListener(onHoverExit.Invoke);
        }

        if (onSelectEnter != null && onSelectEnter.GetPersistentEventCount() > 0)
        {
            interactor.selectEntered.RemoveListener(onSelectEnter.Invoke);
        }

        if (onSelectExit != null && onSelectExit.GetPersistentEventCount() > 0)
        {
            interactor.selectExited.RemoveListener(onSelectExit.Invoke);
        }
    }
}