285 lines
5.0 KiB
HTML
285 lines
5.0 KiB
HTML
<HTML
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><HEAD
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><TITLE
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>Joystick</TITLE
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><META
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NAME="GENERATOR"
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CONTENT="Modular DocBook HTML Stylesheet Version 1.64
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"><LINK
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REL="HOME"
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TITLE="SDL Library Documentation"
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HREF="index.html"><LINK
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REL="UP"
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TITLE="SDL Reference"
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HREF="reference.html"><LINK
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REL="PREVIOUS"
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TITLE="SDL_JoystickEventState"
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HREF="sdljoystickeventstate.html"><LINK
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REL="NEXT"
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TITLE="SDL_NumJoysticks"
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HREF="sdlnumjoysticks.html"><META
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NAME="KEYWORD"
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CONTENT="joystick"><META
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NAME="KEYWORD"
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CONTENT="function"></HEAD
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><BODY
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CLASS="CHAPTER"
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BGCOLOR="#FFF8DC"
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TEXT="#000000"
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LINK="#0000ee"
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VLINK="#551a8b"
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ALINK="#ff0000"
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><DIV
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CLASS="NAVHEADER"
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><TABLE
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WIDTH="100%"
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BORDER="0"
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CELLPADDING="0"
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CELLSPACING="0"
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><TR
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><TH
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COLSPAN="3"
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ALIGN="center"
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>SDL Library Documentation</TH
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></TR
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><TR
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><TD
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WIDTH="10%"
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ALIGN="left"
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VALIGN="bottom"
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><A
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HREF="sdljoystickeventstate.html"
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>Prev</A
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></TD
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><TD
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WIDTH="80%"
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ALIGN="center"
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VALIGN="bottom"
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></TD
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><TD
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WIDTH="10%"
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ALIGN="right"
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VALIGN="bottom"
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><A
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HREF="sdlnumjoysticks.html"
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>Next</A
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></TD
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></TR
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></TABLE
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><HR
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ALIGN="LEFT"
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WIDTH="100%"></DIV
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><DIV
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CLASS="CHAPTER"
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><H1
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><A
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NAME="JOYSTICK"
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>Chapter 9. Joystick</A
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></H1
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><DIV
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CLASS="TOC"
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><DL
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><DT
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><B
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>Table of Contents</B
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></DT
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><DT
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><A
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HREF="sdlnumjoysticks.html"
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>SDL_NumJoysticks</A
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> — Count available joysticks.</DT
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><DT
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><A
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HREF="sdljoystickname.html"
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>SDL_JoystickName</A
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> — Get joystick name.</DT
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><DT
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><A
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HREF="sdljoystickopen.html"
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>SDL_JoystickOpen</A
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> — Opens a joystick for use.</DT
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><DT
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><A
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HREF="sdljoystickopened.html"
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>SDL_JoystickOpened</A
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> — Determine if a joystick has been opened</DT
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><DT
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><A
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HREF="sdljoystickindex.html"
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>SDL_JoystickIndex</A
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> — Get the index of an SDL_Joystick.</DT
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><DT
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><A
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HREF="sdljoysticknumaxes.html"
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>SDL_JoystickNumAxes</A
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> — Get the number of joystick axes</DT
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><DT
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><A
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HREF="sdljoysticknumballs.html"
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>SDL_JoystickNumBalls</A
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> — Get the number of joystick trackballs</DT
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><DT
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><A
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HREF="sdljoysticknumhats.html"
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>SDL_JoystickNumHats</A
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> — Get the number of joystick hats</DT
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><DT
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><A
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HREF="sdljoysticknumbuttons.html"
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>SDL_JoystickNumButtons</A
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> — Get the number of joysitck buttons</DT
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><DT
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><A
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HREF="sdljoystickupdate.html"
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>SDL_JoystickUpdate</A
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> — Updates the state of all joysticks</DT
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><DT
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><A
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HREF="sdljoystickgetaxis.html"
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>SDL_JoystickGetAxis</A
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> — Get the current state of an axis</DT
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><DT
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><A
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HREF="sdljoystickgethat.html"
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>SDL_JoystickGetHat</A
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> — Get the current state of a joystick hat</DT
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><DT
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><A
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HREF="sdljoystickgetbutton.html"
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>SDL_JoystickGetButton</A
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> — Get the current state of a given button on a given joystick</DT
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><DT
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><A
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HREF="sdljoystickgetball.html"
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>SDL_JoystickGetBall</A
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> — Get relative trackball motion</DT
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><DT
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><A
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HREF="sdljoystickclose.html"
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>SDL_JoystickClose</A
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> — Closes a previously opened joystick</DT
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></DL
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></DIV
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><P
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>Joysticks, and other similar input devices, have a very strong role in game playing and SDL provides comprehensive support for them. Axes, Buttons, POV Hats and trackballs are all supported.</P
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><P
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>Joystick support is initialized by passed the <TT
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CLASS="LITERAL"
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>SDL_INIT_JOYSTICK</TT
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> flag to <A
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HREF="sdlinit.html"
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><TT
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CLASS="FUNCTION"
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>SDL_Init</TT
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></A
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>. Once initilized joysticks must be opened using <A
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HREF="sdljoystickopen.html"
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><TT
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CLASS="FUNCTION"
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>SDL_JoystickOpen</TT
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></A
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>.</P
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><P
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>While using the functions describe in this secton may seem like the best way to access and read from joysticks, in most cases they aren't. Ideally joysticks should be read using the <A
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HREF="event.html"
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>event</A
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> system. To enable this, you must set the joystick event processing state with <A
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HREF="sdljoystickeventstate.html"
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><TT
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CLASS="FUNCTION"
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>SDL_JoystickEventState</TT
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></A
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>. Joysticks must be <A
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HREF="sdljoystickopen.html"
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>opened</A
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> before they can be used of course.</P
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><DIV
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CLASS="NOTE"
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><BLOCKQUOTE
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CLASS="NOTE"
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><P
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><B
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>Note: </B
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>If you are <I
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CLASS="EMPHASIS"
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>not</I
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> handling the joystick via the event queue then you must explicitly request a joystick update by calling <A
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HREF="sdljoystickupdate.html"
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><TT
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CLASS="FUNCTION"
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>SDL_JoystickUpdate</TT
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></A
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>.</P
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></BLOCKQUOTE
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></DIV
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><DIV
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CLASS="NOTE"
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><BLOCKQUOTE
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CLASS="NOTE"
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><P
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><B
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>Note: </B
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>Force Feedback is not yet support. Sam (slouken@libsdl.org) is soliciting suggestions from people with force-feedback experience on the best wat to desgin the API.</P
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></BLOCKQUOTE
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></DIV
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></DIV
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><DIV
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CLASS="NAVFOOTER"
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><HR
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ALIGN="LEFT"
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WIDTH="100%"><TABLE
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WIDTH="100%"
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BORDER="0"
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CELLPADDING="0"
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CELLSPACING="0"
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><TR
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><TD
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WIDTH="33%"
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ALIGN="left"
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VALIGN="top"
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><A
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HREF="sdljoystickeventstate.html"
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>Prev</A
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></TD
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><TD
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WIDTH="34%"
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ALIGN="center"
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VALIGN="top"
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><A
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HREF="index.html"
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>Home</A
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></TD
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><TD
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WIDTH="33%"
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ALIGN="right"
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VALIGN="top"
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><A
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HREF="sdlnumjoysticks.html"
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>Next</A
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></TD
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></TR
|
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><TR
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><TD
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WIDTH="33%"
|
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ALIGN="left"
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VALIGN="top"
|
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>SDL_JoystickEventState</TD
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><TD
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WIDTH="34%"
|
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ALIGN="center"
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VALIGN="top"
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><A
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HREF="reference.html"
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>Up</A
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></TD
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><TD
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WIDTH="33%"
|
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ALIGN="right"
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VALIGN="top"
|
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>SDL_NumJoysticks</TD
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></TR
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></TABLE
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></DIV
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></BODY
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></HTML
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> |