User holding down key - handling

[John-Nagle]

For game purposes and for arrow keys, what's the proper Winit way to handle key repeats? Winit will generate a Pressed and Released event. Do I have to track which keys are down, and for how long, or is there something in Winit which will generate repeated events for held-down keys?

[maroider]

"True" Pressed and Released events always come in pairs (that's not quite true, but it's true enough). In the case of key repeat, you'll receive consecutive Pressed events for a given key without any Released event in-between. Thus, you should consider any Pressed events after the first to be repeat events. If you don't receive any repeat events, then could possibly be because the underlying API doesn't send any (as may be the case for DeviceEvents).

[John-Nagle]

OK. I ended up keeping a HashSet to track which keys are currently down. It's updated as key events come in. On each scene frame, I check that set to decide what movement is appropriate. It's a workable solution.

Winit knows to keep re-sending "Pressed", so it must have some internal info like that. If winit has that info, I'd like to have access to it, rather than duplicating that work.

[maroider]

If winit has that info, I'd like to have access to it, rather than duplicating that work.

I think we do on some platforms, but not all.