Issue when using both a trackball and a spinner in advmame

[Pfredd]

I have a USB trackball and a USB spinner.

When playing Major Havoc, if I connect EITHER the trackball or the spinner, the game will work correctly with the connected device.

However, if I connect BOTH the trackball and the spinner, only the trackball works to move the player. I want the spinner to be the control when I play this game (mhavoc).

Here are my advmame configuration changes:

device_raw_mousedev[0] /dev/input/by-id/usb-Baolian_industry_Co.__Ltd.BL_button_spinner#_1_206230584252-mouse
device_raw_mousedev[1] /dev/input/by-id/usb-CHESEN_PS2_to_USB_Converter-if01-mouse
device_raw_mousedev[2] auto
device_raw_mousedev[3] auto
device_raw_mousetype[0] ps2
device_raw_mousetype[1] ps2
device_raw_mousetype[2] pnp
device_raw_mousetype[3] pnp
input_map[p1_dialx] mouse[0,x]
input_map[p1_paddlex] mouse[0,x]
input_map[p1_trackballx] mouse[1,x]
input_map[p1_trackbally] mouse[1,y]

How can I specify that the trackball should be ignored and only the spinner is to be used for this game?

[Pfredd]

I managed to fix it using lr-mame.

I needed to set the mouse index to 2. I did this by creating a ROM-specific config file (mhavoc.zip.cfg), which was located in the same directory as the ROM, with the following lines:

input_player1_mouse_index = "2"
config_save_on_exit = false

I found this information here: https://retropie.org.uk/forum/topic/23850/trackball-and-spinner-conflict?_=1608083465648

I still have several questions regarding this.

First of all, why is it index 2? The device itself is mouse 0 in Linux.

Second, the log is saying I have four mice, why is that?

[INFO] [udev]: Mouse #0 (/dev/input/event6).
[INFO] [udev]: Mouse #1 (/dev/input/mouse1).
[INFO] [udev]: Mouse #2 (/dev/input/event3).
[INFO] [udev]: Mouse #3 (/dev/input/mouse0).

My third question is how do I implement this with advmame? The ROM-specific config file apparently does not work with advmame.

[mitu]

In Advmame, rom specific options are prefixed with the rom name. For instance

input_map[p1_dialx] mouse[0,x]
input_map[p1_paddlex] mouse[0,x]
input_map[p1_trackballx] mouse[1,x]
input_map[p1_trackbally] mouse[1,y]

applies to all games.

For a specific game (mhavoc), configuration can be changed with

mhavoc/input_map[p1_dialx] mouse[1,x]
mhavoc/input_map[p1_paddlex] mouse[1,x]
mhavoc/input_map[p1_trackballx] mouse[0,x]
mhavoc/input_map[p1_trackbally] mouse[0,y]

[Pfredd]

@mitu
Thanks. That did the trick!

I hadn't thought of configuring the trackball to actually be the spinner.