Mercurial > sdl-ios-xcode
annotate docs/html/sdljoystickupdate.html @ 914:bbf8dcc8aed6
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> |
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date | Sun, 25 Jul 2004 18:31:50 +0000 |
parents | 355632dca928 |
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rev | line source |
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0 | 1 <HTML |
2 ><HEAD | |
3 ><TITLE | |
4 >SDL_JoystickUpdate</TITLE | |
5 ><META | |
6 NAME="GENERATOR" | |
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7 CONTENT="Modular DocBook HTML Stylesheet Version 1.76b+ |
0 | 8 "><LINK |
9 REL="HOME" | |
10 TITLE="SDL Library Documentation" | |
11 HREF="index.html"><LINK | |
12 REL="UP" | |
13 TITLE="Joystick" | |
14 HREF="joystick.html"><LINK | |
15 REL="PREVIOUS" | |
16 TITLE="SDL_JoystickNumButtons" | |
17 HREF="sdljoysticknumbuttons.html"><LINK | |
18 REL="NEXT" | |
19 TITLE="SDL_JoystickGetAxis" | |
20 HREF="sdljoystickgetaxis.html"></HEAD | |
21 ><BODY | |
22 CLASS="REFENTRY" | |
23 BGCOLOR="#FFF8DC" | |
24 TEXT="#000000" | |
25 LINK="#0000ee" | |
26 VLINK="#551a8b" | |
27 ALINK="#ff0000" | |
28 ><DIV | |
29 CLASS="NAVHEADER" | |
30 ><TABLE | |
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31 SUMMARY="Header navigation table" |
0 | 32 WIDTH="100%" |
33 BORDER="0" | |
34 CELLPADDING="0" | |
35 CELLSPACING="0" | |
36 ><TR | |
37 ><TH | |
38 COLSPAN="3" | |
39 ALIGN="center" | |
40 >SDL Library Documentation</TH | |
41 ></TR | |
42 ><TR | |
43 ><TD | |
44 WIDTH="10%" | |
45 ALIGN="left" | |
46 VALIGN="bottom" | |
47 ><A | |
48 HREF="sdljoysticknumbuttons.html" | |
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49 ACCESSKEY="P" |
0 | 50 >Prev</A |
51 ></TD | |
52 ><TD | |
53 WIDTH="80%" | |
54 ALIGN="center" | |
55 VALIGN="bottom" | |
56 ></TD | |
57 ><TD | |
58 WIDTH="10%" | |
59 ALIGN="right" | |
60 VALIGN="bottom" | |
61 ><A | |
62 HREF="sdljoystickgetaxis.html" | |
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63 ACCESSKEY="N" |
0 | 64 >Next</A |
65 ></TD | |
66 ></TR | |
67 ></TABLE | |
68 ><HR | |
69 ALIGN="LEFT" | |
70 WIDTH="100%"></DIV | |
71 ><H1 | |
72 ><A | |
73 NAME="SDLJOYSTICKUPDATE" | |
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74 ></A |
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75 >SDL_JoystickUpdate</H1 |
0 | 76 ><DIV |
77 CLASS="REFNAMEDIV" | |
78 ><A | |
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79 NAME="AEN6296" |
0 | 80 ></A |
81 ><H2 | |
82 >Name</H2 | |
83 >SDL_JoystickUpdate -- Updates the state of all joysticks</DIV | |
84 ><DIV | |
85 CLASS="REFSYNOPSISDIV" | |
86 ><A | |
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87 NAME="AEN6299" |
0 | 88 ></A |
89 ><H2 | |
90 >Synopsis</H2 | |
91 ><DIV | |
92 CLASS="FUNCSYNOPSIS" | |
93 ><A | |
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94 NAME="AEN6300" |
0 | 95 ></A |
96 ><P | |
97 ></P | |
98 ><PRE | |
99 CLASS="FUNCSYNOPSISINFO" | |
100 >#include "SDL.h"</PRE | |
101 ><P | |
102 ><CODE | |
103 ><CODE | |
104 CLASS="FUNCDEF" | |
105 >void <B | |
106 CLASS="FSFUNC" | |
107 >SDL_JoystickUpdate</B | |
108 ></CODE | |
109 >(void);</CODE | |
110 ></P | |
111 ><P | |
112 ></P | |
113 ></DIV | |
114 ></DIV | |
115 ><DIV | |
116 CLASS="REFSECT1" | |
117 ><A | |
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118 NAME="AEN6306" |
0 | 119 ></A |
120 ><H2 | |
121 >Description</H2 | |
122 ><P | |
123 >Updates the state(position, buttons, etc.) of all open joysticks. If joystick events have been enabled with <A | |
124 HREF="sdljoystickeventstate.html" | |
125 ><TT | |
126 CLASS="FUNCTION" | |
127 >SDL_JoystickEventState</TT | |
128 ></A | |
129 > then this is called automatically in the event loop.</P | |
130 ></DIV | |
131 ><DIV | |
132 CLASS="REFSECT1" | |
133 ><A | |
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134 NAME="AEN6311" |
0 | 135 ></A |
136 ><H2 | |
137 >See Also</H2 | |
138 ><P | |
139 ><A | |
140 HREF="sdljoystickeventstate.html" | |
141 ><TT | |
142 CLASS="FUNCTION" | |
143 >SDL_JoystickEventState</TT | |
144 ></A | |
145 ></P | |
146 ></DIV | |
147 ><DIV | |
148 CLASS="NAVFOOTER" | |
149 ><HR | |
150 ALIGN="LEFT" | |
151 WIDTH="100%"><TABLE | |
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152 SUMMARY="Footer navigation table" |
0 | 153 WIDTH="100%" |
154 BORDER="0" | |
155 CELLPADDING="0" | |
156 CELLSPACING="0" | |
157 ><TR | |
158 ><TD | |
159 WIDTH="33%" | |
160 ALIGN="left" | |
161 VALIGN="top" | |
162 ><A | |
163 HREF="sdljoysticknumbuttons.html" | |
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164 ACCESSKEY="P" |
0 | 165 >Prev</A |
166 ></TD | |
167 ><TD | |
168 WIDTH="34%" | |
169 ALIGN="center" | |
170 VALIGN="top" | |
171 ><A | |
172 HREF="index.html" | |
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173 ACCESSKEY="H" |
0 | 174 >Home</A |
175 ></TD | |
176 ><TD | |
177 WIDTH="33%" | |
178 ALIGN="right" | |
179 VALIGN="top" | |
180 ><A | |
181 HREF="sdljoystickgetaxis.html" | |
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182 ACCESSKEY="N" |
0 | 183 >Next</A |
184 ></TD | |
185 ></TR | |
186 ><TR | |
187 ><TD | |
188 WIDTH="33%" | |
189 ALIGN="left" | |
190 VALIGN="top" | |
191 >SDL_JoystickNumButtons</TD | |
192 ><TD | |
193 WIDTH="34%" | |
194 ALIGN="center" | |
195 VALIGN="top" | |
196 ><A | |
197 HREF="joystick.html" | |
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198 ACCESSKEY="U" |
0 | 199 >Up</A |
200 ></TD | |
201 ><TD | |
202 WIDTH="33%" | |
203 ALIGN="right" | |
204 VALIGN="top" | |
205 >SDL_JoystickGetAxis</TD | |
206 ></TR | |
207 ></TABLE | |
208 ></DIV | |
209 ></BODY | |
210 ></HTML | |
211 > |