Question How to trigger custom event only once per frame?

I'm making something like a weapon selection UI where you cycle through weapons and select with left click like in Heavy Metal F.A.K.K.² and some FPS games IIRC.

So I made that but when the game get's slower/laggy (when lots of stuff is happening for example), the selection UI seems to skip some elements when using the mouse wheel. For example, one scroll up, and it thinks I did this four times.

Here's the flow machine that checks the mouse wheel and triggers the custom events:


Is there a workaround or better way to trigger a mousewheel up/down once event regardless of FPS?

Sorry if this is embarrassing tho.

Unity 2020.2.1f1
Bolt 1.4.13

 

Try using 'Update' rather than Fixed Update

 

Already tried every Update method, didn't work.

 

Maybe use a boolean, eg. isScrolled. When it =< -1 and isScrolled = false, set isScrolled = true and trigger. When it = 0, isScrolled = false. Then it should only trigger for 1 frame until it returns to 0. Looks like it triggers over a few frames, depending on fps.

 

Okay, I used now a boolean that disables the trigger for .01 second and this seems to do the trick, so the problem is solved now!

Thanks for the hint.