Input triggered multiple times on SteamDeck

[MindFlayeR57]

Tested versions

4.1.2, 4.1.3, and 4.2 all of them are affected and it would take me forever to test more versions with my download speeds

System information

SteamOS 3.5.7

Issue description

is_action_just_pressed() triggers multiple times on SteamDeck when executed under the _input() function.

Steps to reproduce

1. Export the attached project and run it on SteamDeck
2. Switch to the console window
3. Press A
4. It will print the amount of times it got triggered by a single press (usually 3-4)

Minimal reproduction project (MRP)

SteamDeck Bug.zip

[Sauermann]

Please try using

func _input(event: InputEvent) -> void:
	if event.is_action_pressed("ui_accept"):
		i += 1
		print(i) # prints the amount of times is_action_just_pressed() got triggered despite the documentation saying it only triggers once per button press

Input.is_action_just_pressed("ui_accept") returns, if in the current frame any event has the "ui_accept" action pressed. So when multiple events are sent in a single frame, each one of them causes an i += 1 in the same frame.

[clayjohn]

This sounds eerily similar to the issue fixed by #76045

[MindFlayeR57]

Please try using

func _input(event: InputEvent) -> void:
	if event.is_action_pressed("ui_accept"):
		i += 1
		print(i) # prints the amount of times is_action_just_pressed() got triggered despite the documentation saying it only triggers once per button press

Input.is_action_just_pressed("ui_accept") returns, if in the current frame any event has the "ui_accept" action pressed. So when multiple events are sent in a single frame, each one of them causes an i += 1 in the same frame.

It works! Thank you very much!

[akien-mga]

I'm not sure this is fixed? Is it not a bug in the end?

[Sauermann]

I had a look at the MRP of #76045 and that PR is unrelated to this issue (it has nothing to do with is_action_just_pressed).

This bug report looks more like a duplicate of #80158 and is based on using Input.is_action_just_pressed in an unintended location. The documentation was adjusted accordingly in #80185.