[Gambas-user] Joystick

[Benoît Minisini]

Le 05/11/2021 à 17:31, Tobias Boege via User a écrit :
> On Fri, 05 Nov 2021, Admin wrote:
>> 05.11.2021 23:05, Benoît Minisini пишет:
>>> Le 05/11/2021 à 15:46, Admin a écrit :
>>>> Greetings!
>>>>
>>>> Is there still a way to read joystick events in Gambas?
>>>> As I understand, it was done via gb.sdl before it was replaced with
>>>> gb.sdl2, wich does not have joystick support.
>>>>
>>>> Dmitry.
>>>>
>>>>
>>>
>>> This has not been implemented in 'gb.sdl2'. Anyway, I don't understand
>>> why reading a specific input device should be specific to a library,
>>> even if joysticks are mainly used in games.
>>>
>>> If anyone has more information about that...
>>>
>> Totally agree. I don't need a whole SDL2 just to implement input. I wrote an
>> experimental code just now to try parsing joystick myself:
>>
>> ------------------------------------
>> Public Sub Main()
>>
>>    Shell "cat /dev/input/js0" For Read As "Joystick"
>>
>> End
>> -----
>> Public Sub Joystick_Read()
>> Dim joyEvent As String
>> Dim size As Integer
>> Dim events As Byte[]
>>
>> size = Lof(Last)
>> joyEvent = Read #Last, size
>>
>> events = Byte[].FromString(joyEvent)
>>
>> Print events[0], events[1], events[2], events[3], events[4], events[5],
>> events[6], events[7]
>>
>> End
>> ------------------------------------
>>
>> and it looks like it's pretty readable. I don't know what first four bytes
>> mean, but last four are "pressed/released" or analog value of axis, analog
>> value of second axis, number of analog stick used (buttons are always 1)
>> and, finally, button number. That's totally enough. It would be nice to have
>> a simple gb.joystick class that just works like keypress for joysticks, but
>> this works too.
>>
> 
> Curiously, it exists in a years old merge request that I never followed
> through with because it was an afternoon project and the component would
> be very small and Linux-specific. But the code still exists here:
> 
>    https://gitlab.com/gambas/gambas/-/merge_requests/76
> 
> but it is written in C for incorporation into the Gambas source tree.
> Yours will be easier to just dump into a project.
> 
> Best,
> Tobias
> 

Oops, I completly forgot that merge request! Is it finished?

-- 
Benoît Minisini