Unexpected chain reaction

Development Programming & Scripting Blueprint
1

Hello everyone,

I’m fairly new to UE4 and I don’t understand a chain reaction happening in one of my blueprints.

Chain reaction.jpg
Chain reaction.jpg1022×300 50 KB

The first branch check if the player is overlapping an object, AND pressing the trigger button. The second branch check an Variable value (which i made 0 by default). If the value is 0, it sets it to 1. Then the next branch checks again the variable value, and play a sound if it is 1.

I Thought it would work as follow:

If i press the button once, the value of the variable change to 1. If i press it again, the sound play. But in pratice it plays already on first press!

Do you have any idea why it does that?

Thank you very much

2

Right Click on the first branch and ‘toggle breakpoint’. That should give you more info on what’s going on. Otherwise, post your variable details.

3

Thank you for your help Salm!

For an unkwown reason i reproduced the exactly same blueprint and now it works. It may be because of the variable default value, but i really thought I made it 0 !

Anyway thank you for the breakpoint tip it may prove very useful for troubleshooting.