xboxdrv for 4 way restriction

churchill7

Howdy... I read through Universal-Controller-Calibration-&-Mapping-Using-xboxdrv. Down in the section "Restricting directional control to four ways" it goes over the use and switches associated with restricting an 8 way stick to 4 way. What is not clear to me is how to use this command. Is it something to add to a startup script? Just run the command with the needed switches, and it's good? How to persist after reboot in a way the RetroPie likes? If just running the command below is all I need to run or do I have to work out all the mappings?

RetroPie 4 and Mame2003 emu by the way.

Any insight is appreciated!

sudo /opt/retropie/supplementary/xboxdrv/bin/xboxdrv --four-way-restrictor

Ok Edit:.... So I poked my way through the docs and came up with the following script.

sudo /opt/retropie/supplementary/xboxdrv/bin/xboxdrv \
    --evdev /dev/input/by-id/usb-Logitech_Logitech_Extreme_3D-event-joystick \
    --silent \
    --detach-kernel-driver \
    --force-feedback \
    --deadzone-trigger 15% \
    --deadzone 4000 \
    --mimic-xpad \
    --four-way-restrictor
    --evdev-absmap ABS_X=x1,ABS_Y=y1,ABS_X=x2,ABS_Y=y2 \
    --evdev-keymap BTN_THUMB=a,BTN_TRIGGER=b,BTN_BASE4=x,BTN_BASE3=y,BTN_BASE=select,BTN_BASE2=start \
    >/dev/null &

Now a controller shows up but shows up unconfigured so it doesn't work...

Still looking for thougths

mahoneyt944

@churchill7 this is a core option.

Load the core with a 4 way game like donkey kong or pacman.

Retroarch main menu-> Quick menu-> options -> 4-way joystick emulation on 8-way joysticks -> enable

churchill7

@mahoneyt944 I am not seeing "4-way joystick emulation" under Quick Menu-->Options.

Libation

@churchill7 MAME 2003 Plus has the 4 way option.

churchill7

@libation I am using Mame2003-Plus now. I gave up on the xboxdrv deal. Honestly I think that mame2003-plus knows when a game is 4 or 8 way. I still do not see any options for 4 way emulation, however, when I go into a game like Tron the light cycles are playable again so it seems to be automated. I may be wrong. Just my observation.

mahoneyt944

@churchill7 in mame2003-plus and mame2003 this core option will be hidden unless you're playing a game that uses the feature. I recommend running pacman then going into the core options.

https://github.com/libretro/mame2003-libretro/blob/7ea22d44c0d899cf7670d458cd6dac0942839d2d/src/mame2003/mame2003.c#L187

The default is probably decent though like you observed in Tron.