How do you run code the moment a bool turns true or false

[gunnar]

Godot Version

version 4.2.2

Question

so I’m quite new to godot, and I can only figure out how to run a line of code while a boolean is true or false, but not when it turns true or false. can anyone show me how to do this? thanks!

[athousandships]

What context are we talking about? The property on a class you wrote? Or a property on some other class? What value is it you want to check?

[skilllgg]

If you want to run some code when a variable has changed inside of a Node script you should probably consider using setters. For example you could write code like that:

# it can be exported.
# If you use @tool at the start the code, the code inside of the setter will also run when changing the value inside of the editor. (See Engine.is_editor_hint())
@export
var someBooleanValue: bool = false: # default is false
    set(newValue):
        someBooleanValue = newValue # we have to save the change (if you don't add this line, someBooleanValue will never change)
        ## here some code to do after the value has changed

Reference: GDScript reference — Godot Engine (stable) documentation in English

[gunnar]

Thanks a lot :)))