What's the simplest way to handle mouse click events for children of a GameObject in Unity?-CodePudding

I have created an empty GameObject (named FileCabinet) and assigned 4 prefabs as children (CabinetFrame, Drawer01, Drawer02, and Drawer03).

I would like to be able to click on any of the drawers to open them, but everything that I have tried thus far returns the parent GameObject FileCabinet as the item clicked rather than any of the children.

What's the best/simplest approach to call a method when any of the drawer child objects are clicked?

Update:

@LoïcLeGrosFrère provided a solution that ultimately worked. I initially had problems with events not firing because my UI was blocking raycasts to my 3D file cabinet object. I resolved the issue by adding a Canvas Group component to my Canvas and unchecking Blocks Raycasts, but this then disabled all my UI components. I then added Canvas Group components to individual UI panels and checked Ignore Parent Groups. I'm not sure if this is the correct way to handle the raycast conflict but it did work for me.

CodePudding user response：

The simplest approach I see is:

Add a Physics Raycaster component to your camera.

Add a Event System to your scene, with a Input System UI Input Module.

Then, add this script to your drawers:

using UnityEngine;
using UnityEngine.EventSystems;

public class Drawer : MonoBehaviour, IPointerClickHandler
{
    public void OnPointerClick(PointerEventData eventData)
    {
        Debug.Log($"Open {gameObject.name}.");
    }
}