IsPointerOverGameObject - Ignoring Some Objects

In my voxel game, much like other voxel games, you use the mouse to add or delete blocks in the world.

When the pause menu or other UI elements are on screen, I don't want the click (used for returning back to the game) to go through and also add or delete a block in the world.

So, I use IsPointerOverGameObject() to determine if the cursor is over an event object. If it is, I don't cast the ray into the world.

The problem is, I overlay a cursor icon over the hidden/locked cursor while in the game. And it detects that the cursor is over this icon, and therefore doesn't let me place or delete any blocks ever.

So my question is (and perhaps I overlooked the answer somewhere, but haven't been able to find quite what I'm looking for) - how can I make it so that IspointerOverGameObject() works in this way but ignores that cursor icon I'm using?

Thanks!

 

Hi Jason,

I came across a similar problem in my game and what I did was use EventSystem.current.currentSelectedGameObject, it returns null if you are touching/clicking a GameObject (UI Element) that doesn't inherit from UnityEngine.UI.Selectable, for example an UI Image, and returns the GameObject if you're touching/click a Button (because it inherit from Selectable).

I hope it work for you either.

 

George, EventSystem.current.currentSelectedGameObject worked great for me. Thanks!

 

I haven't checked this topic in a while and didn't notice the responses. I hadn't thought to try currentSelectedGameObject - that's interesting.

I actually ended up setting the cursor image using Cursor.SetCursor, and so this wasn't an issue anymore. However, it's good to know for future cases .

 

Since its back on top and appears to be high in the search rankings, you can also use EventSystem.RaycastAll

 

Tried everything above, none of it worked 100% (Unity5 is just too buggy). This solution worked for me:

https://www.reddit.com/r/Unity3D/comments/2zc2xa/how_to_exlude_ui_from_touch_input/cphkhyo

 

Hi, sorry I looked up what you said and tried it out but I got an error and I made sure that I had this:

Code (CSharp):

1. using UnityEngine.EventSystems;
2.  

anyway this is my error: The name `EventSystems' does not exist in the current context
And this is my code:

Code (CSharp):

1.     public GameObject currentSelectedGameObject;
2.  
3.     void Update () {
4.             if (Input.GetMouseButtonDown (0)) {
5.             if (!EventSystems.EventSystem.currentSelectedGameObject ()) {
6.                         Vector3 mousePosition = Input.mousePosition;
7.                         mousePosition.z = 10; // distance from the camera
8.                         target = Camera.main.ScreenToWorldPoint (mousePosition);
9.                         target.z = transform.position.z;
10.             }
11.         }
12.        
13.             transform.position = Vector3.MoveTowards (transform.position, target, speed * Time.fixedDeltaTime);

Anyway Thank you.

 

EventSystem (note: no s at the end) is the variable your looking for. It resides in UnityEngine.EventSystems namespace.

So at the top of your script add:
using UnityEngine.EventSystems;
and in your code get rid of EventSystems

or change the line to
UnityEngine.EventSystems.EventSystem. all the other stuff

Just Using EventSystems by itself will never work since its not a root level namespace (or a class definition)

 

Hi Everyone,

If you want use IsPointerOverGameObject() & ignore any UI Image, you can uncheck Raycast Target in Image component of that GameObject.

I hope this will be helpful for you.

 

I can't believe I missed this. THANK YOU for saving me time fiddling with new functions to an already working system

 

Found this code

Code (CSharp):

1. public bool IsPointerOverUIObject()
2.     {
3.  
4.         if (EventSystem.current == null) return false;
5.         PointerEventData eventDataCurrentPosition = new PointerEventData(EventSystem.current);
6.         eventDataCurrentPosition.position = new Vector2(Input.mousePosition.x, Input.mousePosition.y);
7.         List<RaycastResult> results = new List<RaycastResult>();
8.         EventSystem.current.RaycastAll(eventDataCurrentPosition, results);
9.         return results.Count > 0;
10.     }

From this saint
https://github.com/GibsS/unity-pan-and-zoom

It works for mobile too.