Force Feedback for Linux (svn 831)

[Spindizzi]

Information for FFB on linux
I personnaly only checked this feature on Ubuntu 18.04 lts and 20.04 lts

your ffb device must be correctly installed
I personnaly use modified ffb driver for logitech device (wheel)
because original built-in core driver only supports constant force

you can found these drivers at
https://github.com/berarma/new-lg4ff
to install, follow instructions from author

I use fftest software to check forces effects
if not already installed,

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sudo apt install joystick

if I remember correctly...

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sudo fftest /dev/input/event5

to test every force effects on your device

of course, if you don't have any forces effects working at the stage, you can't have force effects in Supermodel

I also use oversteer program to set wheel rotation angle for device
you can found it at the same author driver web site
https://github.com/berarma/oversteer

tested only with my own ffb devices : g27 wheel, xbox360 pad, some microsoft joysticks and a saitek evo force
note : it is needed to make some code changes for this last one. look inside code.

no needs to use the switch on linux system since it's the default option

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-input-system=sdl

just add commandline option

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-force-feedback

or define in supermodel.ini file

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ForceFeedback=1

I don't own any apple machines, I can't check if this works on it

note : it is also possible to use sdl2 ffb on Windows machines instead of direct input ffb

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-input-system=sdl -force-feedback

edit

I forgot to say, you can adjust the strength of each effects in supermodel.ini file like you do it for dinput or xinput
SDLConstForceMax = 100
SDLSelfCenterMax = 100
SDLFrictionMax = 100
SDLVibrateMax = 100

note about saitek evo force joystick
I only check this device on windows because there is no driver available in Linux. The trouble for this device is only windows related.

[zuppa_di_pesce]

THANK YOU SPINDIZZI!!!!!!

DualShock 3 [CECH-ZC2E] is working out-of-the-box via bluetooth on ArchLinux!

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$ uname -sro
Linux 5.9.1-arch1-1 GNU/Linux

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$ evjstest
Device File: /dev/input/event12 (/dev/input/js0)
Device Name: PLAYSTATION(R)3 Controller
Device ID:   bus:0005 vendor:054c product:0268

[zuppa_di_pesce]

I use fftest software to check forces effects
if not already installed,

Code: Select all

sudo apt install joystick

if I remember correctly...

Code: Select all

sudo fftest /dev/input/event5

to test every force effects on your device

I suggest you also:evjs - Evdev Joystick Utilities

[TheOldDragon]

Information for FFB on linux
I personnaly only checked this feature on Ubuntu 18.04 lts and 20.04 lts

your ffb device must be correctly installed

This is great news.

Just tried it with a wired PDP Xbox One controller on Ubuntu 20.10 [with a 5.9.1 kernel], and it's working great with SVN 832 and "scudplus" and "daytona2" [using the -force-feedback cli arguement].

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$ evjstest
Device File: /dev/input/event5 (/dev/input/js1)
Device Name: Generic X-Box pad
Device ID:   bus:0003 vendor:0e6f product:02a0

I personnaly use modified ffb driver for logitech device (wheel)
because original built-in core driver only supports constant force

you can found these drivers at
https://github.com/berarma/new-lg4ff
to install, follow instructions from author

This is even better news...

I'll try it with my Logitech G29 tomorrow and see if I can get the wheel - and force feedback - working with Supermodel.

[TheOldDragon]

Here are my impressions of FFB with certain games. Same settings for all (see below):

Scud Race - fantastic
Emergency Call Ambulance - decent
Sega Rally 2 - OK
Daytona 2 and Daytona PE - doesn't work properly at all....

Daytona 2:
- it's really strange.. it feels like you're almost locked to the straight-ahead, and have to "break free" to get past that.. and once you do, there's basically no feedback once off of centre. I tried multiple settings in oversteer, but can't get anything to work properly...

Setup:

System:
ASRock B550 w/ Ryzen 5 3600
Ubuntu 20.10 [5.8.29]

Wheel:
Logitech Driving Force G29

Driver:
New-newlg4ff [v0.3.1]

Oversteer [0.5.0]:
Controls:
Compatibility: G29
Rotation range: 270 deg
Force Feedback:
FFB Gain: 100
Autocenter strength: 30
Spring force: 40
Damper force: 30
Friction force: 30

Supermodel [SVN r832]:
Config file settings:
InputJoy1XDeadZone = 1

[Spindizzi]

Hi, I was really busy these months, sorry for late reply

can you try to edit
Src\OSD\SDL\SDLInputSystem.cpp

line 514-516

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if (ffCmd.force == 0.0f)
        StopConstanteforce(joyNum);
      else if (ffCmd.force > 0.0f)
        ConstantForceEffect(ffCmd.force * (float)(sdlConstForceMax / 100.0f), -1, 100, joyNum);
      else if (ffCmd.force < 0.0f)
        ConstantForceEffect(-ffCmd.force * (float)(sdlConstForceMax / 100.0f), 1, 100, joyNum);
      break;


to

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if (ffCmd.force == 0.0f)
        StopConstanteforce(joyNum);
      else if (ffCmd.force > 0.0f)
        ConstantForceEffect(ffCmd.force * (float)(sdlConstForceMax / 100.0f), -1, SDL_HAPTIC_INFINITY, joyNum);
      else if (ffCmd.force < 0.0f)
        ConstantForceEffect(-ffCmd.force * (float)(sdlConstForceMax / 100.0f), 1, SDL_HAPTIC_INFINITY, joyNum);
      break;


this will change the duration of the constant force effect (100ms to infinity)

can you check other games with this change ?

let me know if I must commit or not

note: instead of change in oversteer config, you can directly change the amount of effect force in supermodel.ini file

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SDLConstForceMax = 100
SDLSelfCenterMax = 100
SDLFrictionMax = 100
SDLVibrateMax = 100


in general (for all game) or in specific game section

[TheOldDragon]

Hi, I was really busy these months, sorry for late reply

can you try to edit
Src\OSD\SDL\SDLInputSystem.cpp
.....

Thanks for the reply.

I made the code update [uisng svn 833 as basis], and yes, it fixes Daytona 2 [normal & PE]; it's much better now. Fantastic!

I ran Scud Race and Sega Rally 2 with the changes and they seem unaffected... so still good...

Thanks again!

[new_holmes]

On kubuntu 20.10 :
Wheel : MS Sidewinder FFB USB

To identify the event associated to the wheel:

cat /proc/bus/input/devices

In my case this returns event6 for the Wheel.

Then you can do the test:
sudo fftest /dev/input/event6

Works perfectly in supermodel (tested with Daytona2 and ScudRace)

[belegdol]

I tested this with my Xbox One gamepad via the dongle, using xone experimental driver [1] on Fedora 35. With Daytona 2 Power Edition the pad rumbles. With Star Wars Trilogy, however, there is nothing. Is it supposed to, or is swtrilgy using real force feedback as in adjusting the resistance of the stick?

[1] https://github.com/medusalix/xone/commits/experimental

[spazmoid]

Is there anyway of getting this to work on Mac OS?