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Date: Wed, 23 Jun 2004 17:05:33 -0400 From: Chris Nelson Subject: [SDL] [Patch] WiseGroup MP-8800 / MP-8866 (PS2 Joystick) In the current cvs version, SDL doesn't handle these Playstation2 controller => USB adapters correctly, in linux. It will always assume that the maximum number of joysticks (2 in the case of the MP-8866, 4 in the case of the 8800) are plugged in. This is bad not only because it allows SDL to exaggerate the number of logical joysticks, but primarily because the joystick axes are mapped incorrectly, all over the place, such that the devices are effectively unusable unless you have the maximum number of joysticks plugged in. My changes to src/joystick/linux/SDL_sysjoystick.c build on another's previous work (which was a special case for this very joystick, actually), and fix both of these problems, as well as making the current code a little more general, to allow for others to more easily drop in code for quirky joysticks such as these. I've tested this code under 2.6.7 as well as 2.4.24... Both work as advertised (provided you load the JOYDEV linux code as a module, otherwise they won't work at all, new code or old, but that's another issue entirely). Though this sounds horribly formal, you have my permission to distribute all of my work on this issue under the LGPL. So there.
author Sam Lantinga <slouken@libsdl.org>
date Sun, 25 Jul 2004 18:31:50 +0000
parents e5bc29de3f0a
children 546f7c1eb755
line wrap: on
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.TH "SDL_JoyButtonEvent" "3" "Tue 11 Sep 2001, 22:59" "SDL" "SDL API Reference" 
.SH "NAME"
SDL_JoyButtonEvent\- Joystick button event structure
.SH "STRUCTURE DEFINITION"
.PP
.nf
\f(CWtypedef struct{
  Uint8 type;
  Uint8 which;
  Uint8 button;
  Uint8 state;
} SDL_JoyButtonEvent;\fR
.fi
.PP
.SH "STRUCTURE DATA"
.TP 20
\fBtype\fR
\fBSDL_JOYBUTTONDOWN\fP or \fBSDL_JOYBUTTONUP\fP
.TP 20
\fBwhich\fR
Joystick device index
.TP 20
\fBbutton\fR
Joystick button index
.TP 20
\fBstate\fR
\fBSDL_PRESSED\fP or \fBSDL_RELEASED\fP
.SH "DESCRIPTION"
.PP
\fBSDL_JoyButtonEvent\fR is a member of the \fI\fBSDL_Event\fR\fR union and is used when an event of type \fBSDL_JOYBUTTONDOWN\fP or \fBSDL_JOYBUTTONUP\fP is reported\&.
.PP
A \fBSDL_JOYBUTTONDOWN\fP or \fBSDL_JOYBUTTONUP\fP event occurs when ever a user presses or releases a button on a joystick\&. The field \fBwhich\fR is the index of the joystick that reported the event and \fBbutton\fR is the index of the button (for a more detailed explaination see the \fIJoystick section\fR)\&. \fBstate\fR is the current state or the button which is either \fBSDL_PRESSED\fP or \fBSDL_RELEASED\fP\&.
.SH "SEE ALSO"
.PP
\fI\fBSDL_Event\fR\fR, \fIJoystick Functions\fR, \fI\fBSDL_JoystickEventState\fP\fR, \fI\fBSDL_JoystickGetButton\fP\fR
...\" created by instant / docbook-to-man, Tue 11 Sep 2001, 22:59