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authorDavid Thompson <dthompson@vistahigherlearning.com>2020-04-08 17:10:29 -0400
committerDavid Thompson <dthompson@vistahigherlearning.com>2020-04-08 17:10:29 -0400
commite7d470e954d0a17ab1b2fe0065f46f78475272f9 (patch)
treeca4d9c00789f41dbbdbac33151824812dad879f7 /manuals/chickadee/The-Listener.html
parentb660cbb5287f7cdcb6cebaba72afe8fc7d512616 (diff)
Add chickade 0.5.0 stuff.
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+<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
+<html>
+<!-- Copyright (C) 2017-2020 David Thompson davet@gnu.org
+
+Permission is granted to copy, distribute and/or modify this document
+under the terms of the GNU Free Documentation License, Version 1.3
+or any later version published by the Free Software Foundation;
+with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts.
+A copy of the license is included in the section entitled "GNU
+Free Documentation License".
+
+A copy of the license is also available from the Free Software
+Foundation Web site at http://www.gnu.org/licenses/fdl.html.
+
+
+* Chickadee: (chickadee). Game programming toolkit for Guile.
+
+The document was typeset with
+http://www.texinfo.org/ (GNU Texinfo).
+ -->
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+<head>
+<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
+<title>The Listener (The Chickadee Game Toolkit)</title>
+
+<meta name="description" content="The Listener (The Chickadee Game Toolkit)">
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+<link href="index.html#SEC_Contents" rel="contents" title="Table of Contents">
+<link href="Audio.html#Audio" rel="up" title="Audio">
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+<body lang="en">
+<span id="The-Listener"></span><div class="header">
+<p>
+Next: <a href="The-Environment.html#The-Environment" accesskey="n" rel="next">The Environment</a>, Previous: <a href="Sources.html#Sources" accesskey="p" rel="prev">Sources</a>, Up: <a href="Audio.html#Audio" accesskey="u" rel="up">Audio</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>
+</div>
+<hr>
+<span id="The-Listener-1"></span><h4 class="subsection">2.4.3 The Listener</h4>
+
+<p>The listener is a collection of global state that represents the
+player within the 3D sound model. For games that do not need 3D sound
+modeling, manipulating the listener&rsquo;s master volume is the only
+interesting thing to do here.
+</p>
+<dl>
+<dt id="index-listener_002dvolume">Procedure: <strong>listener-volume</strong></dt>
+<dd><p>Return the current master volume of the listener.
+</p></dd></dl>
+
+<dl>
+<dt id="index-listener_002dposition">Procedure: <strong>listener-position</strong></dt>
+<dd><p>Return the current position of the listener.
+</p></dd></dl>
+
+<dl>
+<dt id="index-listener_002dvelocity">Procedure: <strong>listener-velocity</strong></dt>
+<dd><p>Return the current velocity of the listener.
+</p></dd></dl>
+
+<dl>
+<dt id="index-listener_002dorientation">Procedure: <strong>listener-orientation</strong></dt>
+<dd><p>Return the current orientation of the listener.
+</p></dd></dl>
+
+<dl>
+<dt id="index-set_002dlistener_002dvolume_0021">Procedure: <strong>set-listener-volume!</strong> <em>volume</em></dt>
+<dd><p>Set the listener&rsquo;s master volume to <var>volume</var>, a value in the range [0,
+1].
+</p></dd></dl>
+
+<dl>
+<dt id="index-set_002dlistener_002dposition_0021">Procedure: <strong>set-listener-position!</strong> <em>position</em></dt>
+<dd><p>Set the listener&rsquo;s position to the 3D vector <var>position</var>.
+</p></dd></dl>
+
+<dl>
+<dt id="index-set_002dlistener_002dvelocity_0021">Procedure: <strong>set-listener-velocity!</strong> <em>velocity</em></dt>
+<dd><p>Set the listener&rsquo;s velocity to the 3D vector <var>velocity</var>.
+</p></dd></dl>
+
+<dl>
+<dt id="index-set_002dlistener_002dorientation_0021">Procedure: <strong>set-listener-orientation!</strong> <em>at up</em></dt>
+<dd><p>Set the listener&rsquo;s orientation to the 3D vectors <var>at</var> and
+<var>up</var>.
+</p></dd></dl>
+
+
+
+
+</body>
+</html>