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diff --git a/manuals/chickadee/The-Listener.html b/manuals/chickadee/The-Listener.html new file mode 100644 index 0000000..b9509c9 --- /dev/null +++ b/manuals/chickadee/The-Listener.html @@ -0,0 +1,141 @@ +<!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). + --> +<!-- Created by GNU Texinfo 6.6, http://www.gnu.org/software/texinfo/ --> +<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)"> +<meta name="keywords" content="The Listener (The Chickadee Game Toolkit)"> +<meta name="resource-type" content="document"> +<meta name="distribution" content="global"> +<meta name="Generator" content="makeinfo"> +<link href="index.html#Top" rel="start" title="Top"> +<link href="Index.html#Index" rel="index" title="Index"> +<link href="index.html#SEC_Contents" rel="contents" title="Table of Contents"> +<link href="Audio.html#Audio" rel="up" title="Audio"> +<link href="The-Environment.html#The-Environment" rel="next" title="The Environment"> +<link href="Sources.html#Sources" rel="prev" title="Sources"> +<style type="text/css"> +<!-- +a.summary-letter {text-decoration: none} +blockquote.indentedblock {margin-right: 0em} +div.display {margin-left: 3.2em} +div.example {margin-left: 3.2em} +div.lisp {margin-left: 3.2em} +kbd {font-style: oblique} +pre.display {font-family: inherit} +pre.format {font-family: inherit} +pre.menu-comment {font-family: serif} +pre.menu-preformatted {font-family: serif} +span.nolinebreak {white-space: nowrap} +span.roman {font-family: initial; font-weight: normal} +span.sansserif {font-family: sans-serif; font-weight: normal} +ul.no-bullet {list-style: none} +@media (min-width: 1140px) { + body { + margin-left: 14rem; + margin-right: 4rem; + max-width: 52rem; + } +} + +@media (min-width: 800px) and (max-width: 1140px) { + body { + margin-left: 6rem; + margin-right: 4rem; + max-width: 52rem; + } +} + +@media (max-width: 800px) { + body { + margin: 1rem; + } +} + +--> +</style> +<link rel="stylesheet" type="text/css" href="https://dthompson.us/css/dthompson.css"> + + +</head> + +<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> [<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’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’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’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’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’s orientation to the 3D vectors <var>at</var> and +<var>up</var>. +</p></dd></dl> + + + + +</body> +</html> |