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+A copy of the license is also available from the Free Software
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+* Chickadee: (chickadee).     Game programming toolkit for Guile.
+
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+<title>Invoking chickadee play (The Chickadee Game Toolkit)</title>
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+<span id="Invoking-chickadee-play"></span><div class="header">
+<p>
+Next: <a href="Invoking-chickadee-bundle.html" accesskey="n" rel="next">Invoking chickadee bundle</a>, Up: <a href="Command-Line-Interface.html" accesskey="u" rel="up">Command Line Interface</a> &nbsp; [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="Index.html" title="Index" rel="index">Index</a>]</p>
+</div>
+<hr>
+<span id="Invoking-chickadee-play-1"></span><h3 class="section">3.1 Invoking <code>chickadee play</code></h3>
+
+<p>The <code>chickadee play</code> command is used to open a window and run
+the Chickadee game contained within a Scheme source file.
+</p>
+<div class="example">
+<pre class="example">chickadee play the-legend-of-emacs.scm
+</pre></div>
+
+<p>In this file, special procedures may be defined to handle various
+events from the game loop:
+</p>
+<ul>
+<li> load-game
+</li><li> quit-game
+</li><li> draw
+</li><li> update
+</li><li> key-press
+</li><li> key-release
+</li><li> text-input
+</li><li> mouse-press
+</li><li> mouse-release
+</li><li> mouse-move
+</li><li> mouse-wheel
+</li><li> controller-add
+</li><li> controller-remove
+</li><li> controller-press
+</li><li> controller-release
+</li><li> controller-move
+</li></ul>
+
+<p>See <a href="The-Game-Loop.html">The Game Loop</a> for complete information on all of these
+hooks, such as the arguments that each procedure receives.
+</p>
+<p>In additional to evaluating the specified source file, the directory
+containing that file is added to Guile&rsquo;s load path so that games can
+easily be divided into many different files.  Furthermore, that
+directory is entered prior to evaluating the file so that data files
+(images, sounds, etc.) can be loaded relative to the main source file,
+regardless of what the current directory was when <code>chickadee
+play</code> was invoked.
+</p>
+<p>Many aspects of the initial game window and environment can be
+controlled via the following options:
+</p>
+<dl compact="compact">
+<dt><code>--title=<var>title</var></code></dt>
+<dt><code>-t <var>title</var></code></dt>
+<dd>
+<p>Set the window title to <var>title</var>.
+</p>
+</dd>
+<dt><code>--width=<var>width</var></code></dt>
+<dt><code>-w <var>width</var></code></dt>
+<dd>
+<p>Set the window width to <var>width</var> pixels.
+</p>
+</dd>
+<dt><code>--height=<var>height</var></code></dt>
+<dt><code>-h <var>height</var></code></dt>
+<dd>
+<p>Set the window height to <var>height</var> pixels.
+</p>
+</dd>
+<dt><code>--fullscreen</code></dt>
+<dt><code>-f</code></dt>
+<dd>
+<p>Open window in fullscreen mode.
+</p>
+</dd>
+<dt><code>--resizable</code></dt>
+<dt><code>-r</code></dt>
+<dd>
+<p>Make window resizable.
+</p>
+</dd>
+<dt><code>--update-hz=<var>n</var></code></dt>
+<dt><code>-u <var>n</var></code></dt>
+<dd>
+<p>Update the game <var>n</var> times per second.
+</p>
+</dd>
+<dt><code>--repl</code></dt>
+<dd>
+<p>Launch a REPL in the terminal.  This will allow the game environment
+to debugged and modified without having to stop and restart the game
+after each change.
+</p>
+</dd>
+<dt><code>--repl-server[=<var>port</var>]</code></dt>
+<dd>
+<p>Launch a REPL server on port <var>port</var>, or 37146 by default.
+</p>
+<p><code>telnet localhost 37146</code> (or whatever port number was given)
+will do the trick, but using the <a href="https://www.nongnu.org/geiser/">Geiser</a> extension for Emacs is by far the best way to develop at the
+REPL with Guile.  Use <code>M-x connect-to-guile</code> to connect to the
+REPL server.
+</p>
+</dd>
+</dl>
+
+<hr>
+<div class="header">
+<p>
+Next: <a href="Invoking-chickadee-bundle.html" accesskey="n" rel="next">Invoking chickadee bundle</a>, Up: <a href="Command-Line-Interface.html" accesskey="u" rel="up">Command Line Interface</a> &nbsp; [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="Index.html" title="Index" rel="index">Index</a>]</p>
+</div>
+
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