forked from KolibriOS/kolibrios
263 lines
3.5 KiB
HTML
263 lines
3.5 KiB
HTML
|
<HTML
|
||
|
|
><HEAD
|
||
|
|
><TITLE
|
||
|
|
>SDL_JoystickGetAxis</TITLE
|
||
|
|
><META
|
||
|
|
NAME="GENERATOR"
|
||
|
|
CONTENT="Modular DocBook HTML Stylesheet Version 1.64
|
||
|
|
"><LINK
|
||
|
|
REL="HOME"
|
||
|
|
TITLE="SDL Library Documentation"
|
||
|
|
HREF="index.html"><LINK
|
||
|
|
REL="UP"
|
||
|
|
TITLE="Joystick"
|
||
|
|
HREF="joystick.html"><LINK
|
||
|
|
REL="PREVIOUS"
|
||
|
|
TITLE="SDL_JoystickUpdate"
|
||
|
|
HREF="sdljoystickupdate.html"><LINK
|
||
|
|
REL="NEXT"
|
||
|
|
TITLE="SDL_JoystickGetHat"
|
||
|
|
HREF="sdljoystickgethat.html"></HEAD
|
||
|
|
><BODY
|
||
|
|
CLASS="REFENTRY"
|
||
|
|
BGCOLOR="#FFF8DC"
|
||
|
|
TEXT="#000000"
|
||
|
|
LINK="#0000ee"
|
||
|
|
VLINK="#551a8b"
|
||
|
|
ALINK="#ff0000"
|
||
|
|
><DIV
|
||
|
|
CLASS="NAVHEADER"
|
||
|
|
><TABLE
|
||
|
|
WIDTH="100%"
|
||
|
|
BORDER="0"
|
||
|
|
CELLPADDING="0"
|
||
|
|
CELLSPACING="0"
|
||
|
|
><TR
|
||
|
|
><TH
|
||
|
|
COLSPAN="3"
|
||
|
|
ALIGN="center"
|
||
|
|
>SDL Library Documentation</TH
|
||
|
|
></TR
|
||
|
|
><TR
|
||
|
|
><TD
|
||
|
|
WIDTH="10%"
|
||
|
|
ALIGN="left"
|
||
|
|
VALIGN="bottom"
|
||
|
|
><A
|
||
|
|
HREF="sdljoystickupdate.html"
|
||
|
|
>Prev</A
|
||
|
|
></TD
|
||
|
|
><TD
|
||
|
|
WIDTH="80%"
|
||
|
|
ALIGN="center"
|
||
|
|
VALIGN="bottom"
|
||
|
|
></TD
|
||
|
|
><TD
|
||
|
|
WIDTH="10%"
|
||
|
|
ALIGN="right"
|
||
|
|
VALIGN="bottom"
|
||
|
|
><A
|
||
|
|
HREF="sdljoystickgethat.html"
|
||
|
|
>Next</A
|
||
|
|
></TD
|
||
|
|
></TR
|
||
|
|
></TABLE
|
||
|
|
><HR
|
||
|
|
ALIGN="LEFT"
|
||
|
|
WIDTH="100%"></DIV
|
||
|
|
><H1
|
||
|
|
><A
|
||
|
|
NAME="SDLJOYSTICKGETAXIS"
|
||
|
|
>SDL_JoystickGetAxis</A
|
||
|
|
></H1
|
||
|
|
><DIV
|
||
|
|
CLASS="REFNAMEDIV"
|
||
|
|
><A
|
||
|
|
NAME="AEN5773"
|
||
|
|
></A
|
||
|
|
><H2
|
||
|
|
>Name</H2
|
||
|
|
>SDL_JoystickGetAxis -- Get the current state of an axis</DIV
|
||
|
|
><DIV
|
||
|
|
CLASS="REFSYNOPSISDIV"
|
||
|
|
><A
|
||
|
|
NAME="AEN5776"
|
||
|
|
></A
|
||
|
|
><H2
|
||
|
|
>Synopsis</H2
|
||
|
|
><DIV
|
||
|
|
CLASS="FUNCSYNOPSIS"
|
||
|
|
><A
|
||
|
|
NAME="AEN5777"
|
||
|
|
></A
|
||
|
|
><P
|
||
|
|
></P
|
||
|
|
><PRE
|
||
|
|
CLASS="FUNCSYNOPSISINFO"
|
||
|
|
>#include "SDL.h"</PRE
|
||
|
|
><P
|
||
|
|
><CODE
|
||
|
|
><CODE
|
||
|
|
CLASS="FUNCDEF"
|
||
|
|
>Sint16 <B
|
||
|
|
CLASS="FSFUNC"
|
||
|
|
>SDL_JoystickGetAxis</B
|
||
|
|
></CODE
|
||
|
|
>(SDL_Joystick *joystick, int axis);</CODE
|
||
|
|
></P
|
||
|
|
><P
|
||
|
|
></P
|
||
|
|
></DIV
|
||
|
|
></DIV
|
||
|
|
><DIV
|
||
|
|
CLASS="REFSECT1"
|
||
|
|
><A
|
||
|
|
NAME="AEN5783"
|
||
|
|
></A
|
||
|
|
><H2
|
||
|
|
>Description</H2
|
||
|
|
><P
|
||
|
|
><TT
|
||
|
|
CLASS="FUNCTION"
|
||
|
|
>SDL_JoystickGetAxis</TT
|
||
|
|
> returns the current state of the given <TT
|
||
|
|
CLASS="PARAMETER"
|
||
|
|
><I
|
||
|
|
>axis</I
|
||
|
|
></TT
|
||
|
|
> on the given <TT
|
||
|
|
CLASS="PARAMETER"
|
||
|
|
><I
|
||
|
|
>joystick</I
|
||
|
|
></TT
|
||
|
|
>.</P
|
||
|
|
><P
|
||
|
|
>On most modern joysticks the X axis is usually represented by <TT
|
||
|
|
CLASS="PARAMETER"
|
||
|
|
><I
|
||
|
|
>axis</I
|
||
|
|
></TT
|
||
|
|
> 0 and the Y axis by <TT
|
||
|
|
CLASS="PARAMETER"
|
||
|
|
><I
|
||
|
|
>axis</I
|
||
|
|
></TT
|
||
|
|
> 1. The value returned by <TT
|
||
|
|
CLASS="FUNCTION"
|
||
|
|
>SDL_JoystickGetAxis</TT
|
||
|
|
> is a signed integer (-32768 to 32768) representing the current position of the <TT
|
||
|
|
CLASS="PARAMETER"
|
||
|
|
><I
|
||
|
|
>axis</I
|
||
|
|
></TT
|
||
|
|
>, it maybe necessary to impose certain tolerances on these values to account for jitter. It is worth noting that some joysticks use axes 2 and 3 for extra buttons.</P
|
||
|
|
></DIV
|
||
|
|
><DIV
|
||
|
|
CLASS="REFSECT1"
|
||
|
|
><A
|
||
|
|
NAME="AEN5794"
|
||
|
|
></A
|
||
|
|
><H2
|
||
|
|
>Return Value</H2
|
||
|
|
><P
|
||
|
|
>Returns a 16-bit signed integer representing the current position of the <TT
|
||
|
|
CLASS="PARAMETER"
|
||
|
|
><I
|
||
|
|
>axis</I
|
||
|
|
></TT
|
||
|
|
>.</P
|
||
|
|
></DIV
|
||
|
|
><DIV
|
||
|
|
CLASS="REFSECT1"
|
||
|
|
><A
|
||
|
|
NAME="AEN5798"
|
||
|
|
></A
|
||
|
|
><H2
|
||
|
|
>Examples</H2
|
||
|
|
><P
|
||
|
|
><PRE
|
||
|
|
CLASS="PROGRAMLISTING"
|
||
|
|
>Sint16 x_move, y_move;
|
||
|
|
SDL_Joystick *joy1;
|
||
|
|
.
|
||
|
|
.
|
||
|
|
x_move=SDL_JoystickGetAxis(joy1, 0);
|
||
|
|
y_move=SDL_JoystickGetAxis(joy1, 1);</PRE
|
||
|
|
></P
|
||
|
|
></DIV
|
||
|
|
><DIV
|
||
|
|
CLASS="REFSECT1"
|
||
|
|
><A
|
||
|
|
NAME="AEN5802"
|
||
|
|
></A
|
||
|
|
><H2
|
||
|
|
>See Also</H2
|
||
|
|
><P
|
||
|
|
><A
|
||
|
|
HREF="sdljoysticknumaxes.html"
|
||
|
|
><TT
|
||
|
|
CLASS="FUNCTION"
|
||
|
|
>SDL_JoystickNumAxes</TT
|
||
|
|
></A
|
||
|
|
></P
|
||
|
|
></DIV
|
||
|
|
><DIV
|
||
|
|
CLASS="NAVFOOTER"
|
||
|
|
><HR
|
||
|
|
ALIGN="LEFT"
|
||
|
|
WIDTH="100%"><TABLE
|
||
|
|
WIDTH="100%"
|
||
|
|
BORDER="0"
|
||
|
|
CELLPADDING="0"
|
||
|
|
CELLSPACING="0"
|
||
|
|
><TR
|
||
|
|
><TD
|
||
|
|
WIDTH="33%"
|
||
|
|
ALIGN="left"
|
||
|
|
VALIGN="top"
|
||
|
|
><A
|
||
|
|
HREF="sdljoystickupdate.html"
|
||
|
|
>Prev</A
|
||
|
|
></TD
|
||
|
|
><TD
|
||
|
|
WIDTH="34%"
|
||
|
|
ALIGN="center"
|
||
|
|
VALIGN="top"
|
||
|
|
><A
|
||
|
|
HREF="index.html"
|
||
|
|
>Home</A
|
||
|
|
></TD
|
||
|
|
><TD
|
||
|
|
WIDTH="33%"
|
||
|
|
ALIGN="right"
|
||
|
|
VALIGN="top"
|
||
|
|
><A
|
||
|
|
HREF="sdljoystickgethat.html"
|
||
|
|
>Next</A
|
||
|
|
></TD
|
||
|
|
></TR
|
||
|
|
><TR
|
||
|
|
><TD
|
||
|
|
WIDTH="33%"
|
||
|
|
ALIGN="left"
|
||
|
|
VALIGN="top"
|
||
|
|
>SDL_JoystickUpdate</TD
|
||
|
|
><TD
|
||
|
|
WIDTH="34%"
|
||
|
|
ALIGN="center"
|
||
|
|
VALIGN="top"
|
||
|
|
><A
|
||
|
|
HREF="joystick.html"
|
||
|
|
>Up</A
|
||
|
|
></TD
|
||
|
|
><TD
|
||
|
|
WIDTH="33%"
|
||
|
|
ALIGN="right"
|
||
|
|
VALIGN="top"
|
||
|
|
>SDL_JoystickGetHat</TD
|
||
|
|
></TR
|
||
|
|
></TABLE
|
||
|
|
></DIV
|
||
|
|
></BODY
|
||
|
|
></HTML
|
||
|
|
>
|