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MEGA65: clean up mose/joystick port selection/emulation #415

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lgblgblgb opened this issue Sep 24, 2024 · 1 comment
Open

MEGA65: clean up mose/joystick port selection/emulation #415

lgblgblgb opened this issue Sep 24, 2024 · 1 comment
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target:C65 target:MEGA65

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@lgblgblgb
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lgblgblgb commented Sep 24, 2024 •
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Some problems:

  1. Till now, the default joystick port was always 2. Let's make joystick port selection configurable from CLI or config file, allow config to be saved.
  2. For some reason (forgot why ...) I did something strange: I always forced to switch to port 1 when mouse grab was activated. This is totally not OK! Let's remove that code.
  3. Add code that mouse movements are routed to SID (and the right D620..D623 register) corresponding to the selected joystick port, and not both which is the current situation.

Issue 2. was discovered by @gurcei thanks for the report and the help to clarify this topic a bit in my head.

New(er) problem

Deeper issue as well: newer ROMs incorporated the idea of "joystick with multiple fire buttons" utilizing the POT lines. Xemu always tries to use those for mouse events, thus now even JOY() returns with some strange value!

Discord thread: https://discord.com/channels/719326990221574164/781481205639020554/1337526744747343934

Discovered by shad0wfax, ROM change confirmed/described by dddaaannn. Thanks!

Future

Connected to the previous newer issue: it would be nice if Xemu can emulate multiple-fire joystick. However this leads too far, as USB gamepad/joystick driven emulation by Xemu does not no anything about the layout of the gamepad used and all buttons can be only handled at once without more knowledge. This is scope of a bigger topic, configurable gamepad layout for emulation.
@lgblgblgb lgblgblgb self-assigned this Sep 24, 2024
@lgblgblgb lgblgblgb moved this to In Progress in MEGA65 emulator project Sep 24, 2024
lgblgblgb added a commit that referenced this issue Sep 24, 2024
@lgblgblgb
MEGA65: fix joy port swap with mouse grab #415
a2c06b7 
Also adding an config option '-joyport N' (N can be 1 or 2) as a CLI
option to select the default emulated port. Also, now the configuration
can be saved which preserves the "swap state" of ports.

The original problem was discovered by @gurcei when he noticed that
using the UI menu's "swap port" functionalty does nothing. It was
because for some reason I wrote code to force port-1 when in mouse grab
mode. Which is bad ...
@lgblgblgb lgblgblgb changed the title MEGA65: clean up emulated joystick port selection MEGA65: clean up emulated mose/joystick port selection/emulation Feb 8, 2025
@lgblgblgb lgblgblgb changed the title MEGA65: clean up emulated mose/joystick port selection/emulation MEGA65: clean up mose/joystick port selection/emulation Feb 8, 2025
@lgblgblgb
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Commit 7394989 is also related somewhat ....

lgblgblgb referenced this issue Feb 8, 2025
@lgblgblgb
MEGA65: adding option to disable mouse emulation
7394989 
The problem: Xemu user may leave mouse grab mode to do something with
their mouse. To avoid bothering the mouse-aware MEGA65 program running,
I returned zero for relative mouse position change in this case. However
that can cause problems with certain programs which are not mouse based
and expecting $FF if mouse is not there.
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