OK, so it seems that for whatever reason, the numeric keypad doesn’t work with this specific core (not sure about others).
So while reading the docs on the specific core here https://docs.libretro.com/library/scummvm/, it says:
"Additional ‘ScummVM Input’ Descriptions:
- Virtual Numpad + Numpad 5 + Numpad 0:
- Enables control during fight sequences in the ‘Indiana Jones’ series of games."
Which is exactly what I need: In “Fate of Atlantis” you can use the mouse (+clicking) to do the fighting sequences. But that option didn’t existed in “Last Crusade”. You must use the keypad in the fighting sequences.
According to the diagram on the libretro page, you need to press those 3 inputs at the same time to enable control through the numpad…? So that would be “right analog stick + R3 + R1”. Either way, it doesn’t work (plus, right analog stick doesn’t “emulate” the numpad, nothing happens in-game). I even tried to change the input driver to “raw” (as suggested by hunterk here: Numpad won’t work in Retroarch), but no dice 
The idea would be to skip using a gamepad altogether (I’m aware that’s the opposite of retroarch’s idea, but…) and just use the keyboard + mouse (obviously, with the numeric keypad being able to input/work). Sure, I could use the emulator itself (ScummVM), but it lacks the plethora of shader options RetroArch has available (including my personal favorites xBRZ and ScaleFX).
Please help?
Does the right analog stick for you in any other cores? e.g., PS1?
