OnMouseDown work through UI elements

Questions & Answers
,
1

There are 1 gameobject with onmousedown function and UI Button at my scene . When gameobject goes behind button and i need to click this button, function onmousedown of gameobject working too. How to avoid this unwanted action ?
I tried to attach collider to button, but function of gameobject still works.

2

Hi, You can make a new script to check is the player hovering the UI Elements

For example (C#):

MyUIHoverListener.cs

Assume that the script is put into the Canvas game object

using UnityEngine;
using UnityEngine.EventSystems;
using System.Collections;
  
public class MyUIHoverListener : MonoBehaviour
{
    public bool isUIOverride { get; private set; }
      
    void Update()
    {
        // It will turn true if hovering any UI Elements
        isUIOverride = EventSystem.current.IsPointerOverGameObject ();
    }
}

MyGameObjectOnClick.cs

This script is attach to your game object it will behind the UI Elements

using UnityEngine;
using UnityEngine.UI;
using System.Collections;
  
public class MyGameObjectOnClick : MonoBehaviour
{
    MyUIHoverListener uiListener;
      
    void Start()
    {
        uiListener = GameObject.Find("Canvas").GetComponent<MyUIHoverListener>();
    }
      
    void OnMouseDown ()
    {
        if (uiListener.isUIOverride)
        {
            Debug.Log ("Cancelled OnMouseDown! A UI element has override this object!");
        }
        else
        {
            Debug.Log ("Object OnMouseDown");
        }
    }
}

Hope this can help you =)

3

hey,
I have added something extra to your code , for if you open a UI after clicking the object (like a menu) and it clicks true the UI onto other objects that are under a button

void OnMouseDown()
{
    if (!GameManager.instance.ObjectClickBlocker)
    {
        if (uiListener.IsUIOverride)
        {
            Debug.Log("Cancelled OnMouseDown! A UI element has override this object!");
        }
        else
        {
            Debug.Log("Object OnMouseDown");
            ToggleBuildingMenu();
        }
    }
}

public void ToggleBuildingMenu()
{
    BuildingMenu.SetActive(!BuildingMenu.activeSelf);
    GameManager.instance.ObjectClickBlocker = BuildingMenu.activeSelf; // sets same as menu, so if menu active blocker is active 
}

and n the GameManager add a public bool

4

This is the only thing that worked for me:

if( !EventSystem.current.IsPointerOverGameObject() )
{
    // my code 
}

Jason explains it here: