After player select a tank in the 3d slg game by mouse, a panel pop up to show available command buttons.
How can i make mouse ignore all objects in the scene, except the panel? So i can secure an input from the command buttons before taking next action in my script?
Good question 
This is definitely a useless thing to know, for those occasions.
I solved this problem by creating a “backing blocking panel” that is invisible or very lightly covered to go over everything
. I set it as lastsibling and then put the menu in front, and (again) set it to lastsibling.
The last piece of the puzzle, for me, was to attach a delegate/event to the panel that is now in front, because I had wanted to retrieve specific data from it to continue execution with certain values (may or may not be required by you).
That make sense?
Thank for the suggestion.
My curret solution is similar, i add a if(pop up window active true) in the update to make mouse ignore all other objects.
Actually, i do expect unity have this built-in function, because i dont want to add many “if” in my script when i have many different pop up windows.
Yeah, that’s a possible solution , as well, but I know what you mean about not wanting to always add those statements.
For keyboard input it’s a little more complicated, but I think you’ll appreciate the ‘backdrop’ panel that intercepts all but the front-most window as a very easy solution for mouse clicks.
It will read any clicks outside of your selection area and block them from going anywhere else (unless you have deeper raycasts going on).