Question by Mirmukhsin · Jun 20, 2021 at 07:46 AM · 2d game collider2d button trigger events

Button above Collider is being ignored when clicked.

Hey, I am working on a 2D game. I have a Cell prefab that has a BoxCollider2d attached. I am listening to the OnMouseDown event to open a small popup with buttons above that cell.

When I click on the button, the button action is not being performed. However, the cell beneath the button is being triggered, and in return, another small popup gets opened.

I can't disable BoxCollider2d because I need to close the previously opened popup when I click on another cell.

TL;DR The UI button's action above the BoxCollider2d is being ignored completely.

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Janette5 · Jun 22, 2021 at 06:14 AM 0

Check that you have an EventSystem in your scene - that is what makes the buttons work.

Unity automatically inserts it if you create a canvas, but if you copied and pasted the buttons or brought them in from a prefab, you might not have an event system, in which case none of your buttons will work. You can insert an event system: Add object - UI - right at the bottom is Event System.

If you do have an event system, double check that the On Click on your buttons is setup correctly.

If it's not either of those - then there might be a conflict in your code, but from the info you've given, I can't tell.