Input: When a button is quickly pressed and released and the game lags it doesn't get released [Linux]

[santouits]

Godot version:
master

OS/device including version:
Linux 4.19, debian stable

Steps to reproduce:
Update the number in the loop I made inside _process(delta), so that your game lags when you move. Then press an arrow button and release it immediately. If you succeed, the sprite will continue to move and you'll have to press and release again the same button to stop it.

Minimal reproduction project:
project.zip

[MightyPrinny]

the game doesn't have to lag I'm getting this normally when I press a key very very fast

[Calinou]

Does this occur if you call Input.set_use_accumulated_input(false) in a script's _ready() function?

[MightyPrinny]

@Calinou that seems to fix the issue thank you.

[Calinou]

For the record, accumulated input was enabled by default because of #26395. Maybe accumulated input should only affect mouse input? I'm not sure if this is feasible though.

[akien-mga]

I've seen this in the TPS demo, both in game and in editor (freelook mode), sometimes the movement keys will get stuck going in one direction even when released. I then need to repress and release to stop perpetual movement.

I've seen it both in 3.1 and the current master branch BTW.

[Zireael07]

I saw this getting stuck in my own game when I was beginning working on the sky, and therefore occasionally had very low FPS. 3.1.1.
I was going mad thinking my car input code was to blame!

[starry-abyss]

Maybe related, or maybe I should create an other issue (I use Windows 7):

• press a key in the Godot game window;
• focus another window with mouse;
• release the key;
• focus the Godot game window;
• see character still moving as if the key wasn't released.

[Calinou]

@starry-abyss You should create another issue for this, as it's not related to input accumulation. To solve this, Godot could be made to release all keys when the window loses focus.