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enabled os2 joystick code (if anyone has actually a use for it...)

This commit is contained in:
Ozkan Sezer 2021-10-15 08:51:02 +03:00
parent 8a48ce00c8
commit 7f728f3eb6
2 changed files with 41 additions and 4 deletions
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38
docs/README-os2.md
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@ -52,3 +52,41 @@ Installing:
version installed, close all SDL2 applications before replacing the old
copy. Also make sure that any other older versions of DLLs are removed
from your system.
Joysticks in SDL2:
------------------
The joystick code in SDL2 is a direct forward-port from the SDL-1.2 version.
Here is the original documentation from SDL-1.2:
The Joystick detection only works for standard joysticks (2 buttons, 2 axes
and the like). Therefore, if you use a non-standard joystick, you should
specify its features in the SDL_OS2_JOYSTICK environment variable in a batch
file or CONFIG.SYS, so SDL applications can provide full capability to your
device. The syntax is:
SET SDL_OS2_JOYSTICK=[JOYSTICK_NAME] [AXES] [BUTTONS] [HATS] [BALLS]
So, it you have a Gravis GamePad with 4 axes, 2 buttons, 2 hats and 0 balls,
the line should be:
SET SDL_OS2_JOYSTICK=Gravis_GamePad 4 2 2 0
If you want to add spaces in your joystick name, just surround it with
quotes or double-quotes:
SET SDL_OS2_JOYSTICK='Gravis GamePad' 4 2 2 0
or
SET SDL_OS2_JOYSTICK="Gravis GamePad" 4 2 2 0
Note however that Balls and Hats are not supported under OS/2, and the
value will be ignored... but it is wise to define these correctly because
in the future those can be supported.
Also the number of buttons is limited to 2 when using two joysticks,
4 when using one joystick with 4 axes, 6 when using a joystick with 3 axes
and 8 when using a joystick with 2 axes. Notice however these are limitations
of the Joystick Port hardware, not OS/2.

7
include/SDL_config_os2.h
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@ -33,14 +33,13 @@
#define SDL_POWER_DISABLED 1
#define SDL_HAPTIC_DISABLED 1
#define SDL_JOYSTICK_DISABLED 1
/*#undef SDL_JOYSTICK_OS2 */
/*#undef SDL_JOYSTICK_HIDAPI */
/*#undef SDL_JOYSTICK_VIRTUAL */
#define SDL_SENSOR_DUMMY 1
#define SDL_VIDEO_DRIVER_DUMMY 1
#define SDL_VIDEO_DRIVER_OS2 1
#define SDL_JOYSTICK_OS2 1
/*#undef SDL_JOYSTICK_HIDAPI */
/*#undef SDL_JOYSTICK_VIRTUAL */
/* Enable OpenGL support */
/* #undef SDL_VIDEO_OPENGL */