Res<Windows> is always changed... only run code when window is resized for example?

[SUPERCILEX]

Bevy version

0.7

What you did

fn window_scaling(windows: Res<Windows>) {
    if !windows.is_changed() {
        return;
    }

    // ...
}

What you expected to happen

is_changed returns false sometimes.

What actually happened

Instead, it appears to always be true. Is this expected?

#4530 seems like it could fix things.

[DJMcNab]

To react to window events, you should listen to the relevant events. For example,

fn react_to_resize(mut resized_events: EventReader<WindowResized>){
     for size_change in resized_events.iter() {
         // React to change
     }
}

I don't think Windows being changed every frame was explicitely known, but I didn't have any indication it wouldn't have been.

[SUPERCILEX]

Oooooh, TIL! Thanks. BTW, is there a more performant way to get the last event than just .iter().last()?

[SUPERCILEX]

Actually I need to filter by the primary window anyway, so nvm.