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<a name="Game-Controllers"></a>
<div class="header">
<p>
Previous: <a href="Joysticks.html#Joysticks" accesskey="p" rel="prev">Joysticks</a>, Up: <a href="Input.html#Input" accesskey="u" rel="up">Input</a> &nbsp; [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="Index.html#Index" title="Index" rel="index">Index</a>]</p>
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<hr>
<a name="Game-Controllers-1"></a>
<h4 class="subsection">3.3.4 Game Controllers</h4>

<div class="example">
<pre class="example">(use-modules (sdl2 input game-controller))
</pre></div>

<dl>
<dt><a name="index-load_002dgame_002dcontroller_002dmappings_0021"></a>Procedure: <strong>load-game-controller-mappings!</strong> <em>file</em></dt>
<dd><p>Load game controller mapping from <var>file</var> and return the number of
mappings added this way.
</p>
<p>See <a href="https://raw.github.com/gabomdq/SDL_GameControllerDB/master/gamecontrollerdb.txt">https://raw.github.com/gabomdq/SDL_GameControllerDB/master/gamecontrollerdb.txt</a>
for a community maintained controller mapping file.
</p></dd></dl>

<dl>
<dt><a name="index-open_002dgame_002dcontroller"></a>Procedure: <strong>open-game-controller</strong> <em>joystick-index</em></dt>
<dd><p>Return a game controller object for the physical joystick device associated
with the <var>joystick-index</var>.
</p></dd></dl>

<dl>
<dt><a name="index-close_002dgame_002dcontroller"></a>Procedure: <strong>close-game-controller</strong> <em>controller</em></dt>
<dd><p>Close <var>controller</var>.
</p></dd></dl>

<dl>
<dt><a name="index-game_002dcontroller_003f"></a>Procedure: <strong>game-controller?</strong> <em>controller</em></dt>
<dd><p>Close <var>controller</var>.
</p></dd></dl>

<dl>
<dt><a name="index-game_002dcontroller_002dattached_003f"></a>Procedure: <strong>game-controller-attached?</strong> <em>controller</em></dt>
<dd><p>Return <code>#t</code> if <var>controller</var> is currently in use.
</p></dd></dl>

<dl>
<dt><a name="index-game_002dcontroller_002djoystick"></a>Procedure: <strong>game-controller-joystick</strong> <em>controller</em></dt>
<dd><p>Return the underlying joystick object associated with <var>controller</var>.
</p></dd></dl>

<dl>
<dt><a name="index-game_002dcontroller_002dname"></a>Procedure: <strong>game-controller-name</strong> <em>controller</em></dt>
<dd><p>Return the human readable name for <var>controller</var>.
</p></dd></dl>

<dl>
<dt><a name="index-game_002dcontroller_002daxis"></a>Procedure: <strong>game-controller-axis</strong> <em>controller axis</em></dt>
<dd><p>Return a number in the range [-32768, 32767] representing the
current state of <var>axis</var> on <var>controller</var>.
</p>
<p><var>axis</var> may be one of the following symbols:
</p><ul>
<li> <code>left-x</code>
</li><li> <code>left-y</code>
</li><li> <code>right-x</code>
</li><li> <code>right-y</code>
</li><li> <code>trigger-left</code>
</li><li> <code>trigger-right</code>
</li></ul>
</dd></dl>

<dl>
<dt><a name="index-game_002dcontroller_002dbutton_002dpressed_003f"></a>Procedure: <strong>game-controller-button-pressed?</strong> <em>controller button</em></dt>
<dd><p>Return <code>#t</code> if <var>button</var> is pressed on <var>controller</var>.
</p>
<p><var>button</var> may be one of the following symbols:
</p><ul>
<li> <code>a</code>
</li><li> <code>b</code>
</li><li> <code>x</code>
</li><li> <code>y</code>
</li><li> <code>back</code>
</li><li> <code>guide</code>
</li><li> <code>start</code>
</li><li> <code>left-stick</code>
</li><li> <code>right-stick</code>
</li><li> <code>left-shoulder</code>
</li><li> <code>right-shoulder</code>
</li><li> <code>dpad-up</code>
</li><li> <code>dpad-down</code>
</li><li> <code>dpad-left</code>
</li><li> <code>dpad-right</code>
</li></ul>
</dd></dl>

<dl>
<dt><a name="index-game_002dcontroller_002dindex_003f"></a>Procedure: <strong>game-controller-index?</strong> <em>joystick-index</em></dt>
<dd><p>Return <code>#t</code> if <var>joystick-index</var> is a valid game controller index.
</p></dd></dl>




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