VKB-Sim T-Rudder not recognized by Godot

[Ivan-Bastidas]

Godot version

v4.1.1.stable.mono.official [bd6af8e]

System information

Godot v4.1.1.stable.mono - Windows 10.0.19045 - Vulkan (Forward+) - dedicated NVIDIA GeForce RTX 3080 (NVIDIA; 31.0.15.3742) - Intel(R) Core(TM) i7-10700K CPU @ 3.80GHz (16 Threads)

Issue description

The VKB-Sim T-Rudder are rudder pedals used for flight simulation, and this device is not recognized by godot's Input Mapper and its also not visible on Input.get_connected_joypads() (I checked with get_joy_name and all my other devices where there), I can use the rudder pedals in games and tested using Gamepad Tester and they work correctly.

This device only have one axis and no buttons, please let me know if you requiere any more information or anything I can do to help

Steps to reproduce

Just open the Input Mapper and try to map the pedals to any input, its not recognized

Minimal reproduction project

No specific project required, any new project gives the same result

[Calinou]

Godot doesn't have built-in support for nonstandard controllers, as https://github.com/gabomdq/SDL_GameControllerDB only accepts mappings for gamepads, not steering wheels, pedals or HOTAS.

Full support for these controllers (such as force feedback) generally requires a dedicated driver that is platform-specific, which is why support across games tends to be so uneven.

[Ivan-Bastidas]

Is it not possible to make it work as a generic controller with one axis? the rest of my HOTAS works like that with Godot but this one is not even detected

[MJacred]

On Windows, for DirectInput devices, we first enumerate all attached and installed devices of type "game controller". The rudder could be DI8DEVCLASS_DEVICE, i.e. "other device". If it is, then Godot most likely excludes it.
As your device is not listed in the connected joypads, I'd say it's not an XInput device. If it were an XInput device, then there's, afaict, at least nothing on Godot's end that excludes controllers. It also does not care about your device GUID. Though the mapping could be wrong…

And you say https://hardwaretester.com/gamepad reads your rudders as one axis? Sadly, web browsers use neither of the two APIs mentioned above

[MJacred]

For DirectInput, there's an issue with Flight device types, which will be fixed in this PR.

Creating a PR similar to that one, which also allows DI8DEVTYPE_SUPPLEMENTAL (Specialized device with functionality unsuitable for the main control of an application, such as pedals used with a wheel. The following subtypes are defined., which includes DI8DEVTYPESUPPLEMENTAL_RUDDERPEDALS), then we might get support for rudders/pedals. Though they will be their own device!

Though they need reviewers and appovers, the existing PR is from Nov 11, 2023…

[Nintorch]

@Ivan-Bastidas Hello, may I ask if the issue is resolved in 4.5 RC1? We recently switched to using SDL3 for joystick and gamepad input (see #106218 ), so I think SDL3 should be able to support your controller.

[loganmhb]

@Nintorch I previously replicated this issue with my T-Rudder pedals, and just confirmed that it's fixed on 4.5-stable!

[Nintorch]

That's good to hear! :)

[Sauermann]

Closing according to the comment above.