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  <section id="license">
<h1>License<a class="headerlink" href="#license" title="Permalink to this headline">¶</a></h1>
<section id="crown-runtime">
<h2>Crown Runtime<a class="headerlink" href="#crown-runtime" title="Permalink to this headline">¶</a></h2>
<p>The Crown Runtime is released under the MIT License:</p>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">Copyright</span> <span class="p">(</span><span class="n">c</span><span class="p">)</span> <span class="mi">2012</span><span class="o">-</span><span class="mi">2025</span> <span class="n">Daniele</span> <span class="n">Bartolini</span> <span class="n">et</span> <span class="n">al</span><span class="o">.</span>

<span class="n">Permission</span> <span class="ow">is</span> <span class="n">hereby</span> <span class="n">granted</span><span class="p">,</span> <span class="n">free</span> <span class="n">of</span> <span class="n">charge</span><span class="p">,</span> <span class="n">to</span> <span class="nb">any</span> <span class="n">person</span>
<span class="n">obtaining</span> <span class="n">a</span> <span class="n">copy</span> <span class="n">of</span> <span class="n">this</span> <span class="n">software</span> <span class="ow">and</span> <span class="n">associated</span> <span class="n">documentation</span>
<span class="n">files</span> <span class="p">(</span><span class="n">the</span> <span class="s2">&quot;Software&quot;</span><span class="p">),</span> <span class="n">to</span> <span class="n">deal</span> <span class="ow">in</span> <span class="n">the</span> <span class="n">Software</span> <span class="n">without</span>
<span class="n">restriction</span><span class="p">,</span> <span class="n">including</span> <span class="n">without</span> <span class="n">limitation</span> <span class="n">the</span> <span class="n">rights</span> <span class="n">to</span> <span class="n">use</span><span class="p">,</span>
<span class="n">copy</span><span class="p">,</span> <span class="n">modify</span><span class="p">,</span> <span class="n">merge</span><span class="p">,</span> <span class="n">publish</span><span class="p">,</span> <span class="n">distribute</span><span class="p">,</span> <span class="n">sublicense</span><span class="p">,</span> <span class="ow">and</span><span class="o">/</span><span class="ow">or</span> <span class="n">sell</span>
<span class="n">copies</span> <span class="n">of</span> <span class="n">the</span> <span class="n">Software</span><span class="p">,</span> <span class="ow">and</span> <span class="n">to</span> <span class="n">permit</span> <span class="n">persons</span> <span class="n">to</span> <span class="n">whom</span> <span class="n">the</span>
<span class="n">Software</span> <span class="ow">is</span> <span class="n">furnished</span> <span class="n">to</span> <span class="n">do</span> <span class="n">so</span><span class="p">,</span> <span class="n">subject</span> <span class="n">to</span> <span class="n">the</span> <span class="n">following</span>
<span class="n">conditions</span><span class="p">:</span>

<span class="n">The</span> <span class="n">above</span> <span class="n">copyright</span> <span class="n">notice</span> <span class="ow">and</span> <span class="n">this</span> <span class="n">permission</span> <span class="n">notice</span> <span class="n">shall</span> <span class="n">be</span>
<span class="n">included</span> <span class="ow">in</span> <span class="nb">all</span> <span class="n">copies</span> <span class="ow">or</span> <span class="n">substantial</span> <span class="n">portions</span> <span class="n">of</span> <span class="n">the</span> <span class="n">Software</span><span class="o">.</span>

<span class="n">THE</span> <span class="n">SOFTWARE</span> <span class="n">IS</span> <span class="n">PROVIDED</span> <span class="s2">&quot;AS IS&quot;</span><span class="p">,</span> <span class="n">WITHOUT</span> <span class="n">WARRANTY</span> <span class="n">OF</span> <span class="n">ANY</span> <span class="n">KIND</span><span class="p">,</span>
<span class="n">EXPRESS</span> <span class="n">OR</span> <span class="n">IMPLIED</span><span class="p">,</span> <span class="n">INCLUDING</span> <span class="n">BUT</span> <span class="n">NOT</span> <span class="n">LIMITED</span> <span class="n">TO</span> <span class="n">THE</span> <span class="n">WARRANTIES</span>
<span class="n">OF</span> <span class="n">MERCHANTABILITY</span><span class="p">,</span> <span class="n">FITNESS</span> <span class="n">FOR</span> <span class="n">A</span> <span class="n">PARTICULAR</span> <span class="n">PURPOSE</span> <span class="n">AND</span>
<span class="n">NONINFRINGEMENT</span><span class="o">.</span> <span class="n">IN</span> <span class="n">NO</span> <span class="n">EVENT</span> <span class="n">SHALL</span> <span class="n">THE</span> <span class="n">AUTHORS</span> <span class="n">OR</span> <span class="n">COPYRIGHT</span>
<span class="n">HOLDERS</span> <span class="n">BE</span> <span class="n">LIABLE</span> <span class="n">FOR</span> <span class="n">ANY</span> <span class="n">CLAIM</span><span class="p">,</span> <span class="n">DAMAGES</span> <span class="n">OR</span> <span class="n">OTHER</span> <span class="n">LIABILITY</span><span class="p">,</span>
<span class="n">WHETHER</span> <span class="n">IN</span> <span class="n">AN</span> <span class="n">ACTION</span> <span class="n">OF</span> <span class="n">CONTRACT</span><span class="p">,</span> <span class="n">TORT</span> <span class="n">OR</span> <span class="n">OTHERWISE</span><span class="p">,</span> <span class="n">ARISING</span>
<span class="n">FROM</span><span class="p">,</span> <span class="n">OUT</span> <span class="n">OF</span> <span class="n">OR</span> <span class="n">IN</span> <span class="n">CONNECTION</span> <span class="n">WITH</span> <span class="n">THE</span> <span class="n">SOFTWARE</span> <span class="n">OR</span> <span class="n">THE</span> <span class="n">USE</span> <span class="n">OR</span>
<span class="n">OTHER</span> <span class="n">DEALINGS</span> <span class="n">IN</span> <span class="n">THE</span> <span class="n">SOFTWARE</span><span class="o">.</span>
</pre></div>
</div>
</section>
<section id="crown-tools">
<h2>Crown Tools<a class="headerlink" href="#crown-tools" title="Permalink to this headline">¶</a></h2>
<p>The Crown Tools are released under the GPL-3.0-or-later license:</p>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span>GNU GENERAL PUBLIC LICENSE
Version 3, 29 June 2007

 Copyright (C) 2007 Free Software Foundation, Inc. &lt;https://fsf.org/&gt;
 Everyone is permitted to copy and distribute verbatim copies
 of this license document, but changing it is not allowed.

Preamble

  The GNU General Public License is a free, copyleft license for
software and other kinds of works.

  The licenses for most software and other practical works are designed
to take away your freedom to share and change the works.  By contrast,
the GNU General Public License is intended to guarantee your freedom to
share and change all versions of a program--to make sure it remains free
software for all its users.  We, the Free Software Foundation, use the
GNU General Public License for most of our software; it applies also to
any other work released this way by its authors.  You can apply it to
your programs, too.

  When we speak of free software, we are referring to freedom, not
price.  Our General Public Licenses are designed to make sure that you
have the freedom to distribute copies of free software (and charge for
them if you wish), that you receive source code or can get it if you
want it, that you can change the software or use pieces of it in new
free programs, and that you know you can do these things.

  To protect your rights, we need to prevent others from denying you
these rights or asking you to surrender the rights.  Therefore, you have
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  Finally, every program is threatened constantly by software patents.
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END OF TERMS AND CONDITIONS

How to Apply These Terms to Your New Programs

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possible use to the public, the best way to achieve this is to make it
free software which everyone can redistribute and change under these terms.

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to attach them to the start of each source file to most effectively
state the exclusion of warranty; and each file should have at least
the &quot;copyright&quot; line and a pointer to where the full notice is found.

        &lt;one line to give the program&#39;s name and a brief idea of what it does.&gt;
        Copyright (C) &lt;year&gt;  &lt;name of author&gt;

        This program is free software: you can redistribute it and/or modify
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        This program is distributed in the hope that it will be useful,
        but WITHOUT ANY WARRANTY; without even the implied warranty of
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        You should have received a copy of the GNU General Public License
        along with this program.  If not, see &lt;https://www.gnu.org/licenses/&gt;.

Also add information on how to contact you by electronic and paper mail.

  If the program does terminal interaction, make it output a short
notice like this when it starts in an interactive mode:

        &lt;program&gt;  Copyright (C) &lt;year&gt;  &lt;name of author&gt;
        This program comes with ABSOLUTELY NO WARRANTY; for details type `show w&#39;.
        This is free software, and you are welcome to redistribute it
        under certain conditions; type `show c&#39; for details.

The hypothetical commands `show w&#39; and `show c&#39; should show the appropriate
parts of the General Public License.  Of course, your program&#39;s commands
might be different; for a GUI interface, you would use an &quot;about box&quot;.

  You should also get your employer (if you work as a programmer) or school,
if any, to sign a &quot;copyright disclaimer&quot; for the program, if necessary.
For more information on this, and how to apply and follow the GNU GPL, see
&lt;https://www.gnu.org/licenses/&gt;.

  The GNU General Public License does not permit incorporating your program
into proprietary programs.  If your program is a subroutine library, you
may consider it more useful to permit linking proprietary applications with
the library.  If this is what you want to do, use the GNU Lesser General
Public License instead of this License.  But first, please read
&lt;https://www.gnu.org/licenses/why-not-lgpl.html&gt;.
</pre></div>
</div>
</section>
<section id="crown-manual">
<h2>Crown Manual<a class="headerlink" href="#crown-manual" title="Permalink to this headline">¶</a></h2>
<p>The Crown Manual is licensed under a <a class="reference external" href="https://creativecommons.org/licenses/by-sa/4.0/">Creative Commons Attribution-ShareAlike
4.0 International License</a>
or any later version. Used logos, trademarks, icons, source code and Lua scripts
are <em>excluded</em> from CC-BY-SA.</p>
</section>
<section id="third-party-libraries">
<h2>Third-party libraries<a class="headerlink" href="#third-party-libraries" title="Permalink to this headline">¶</a></h2>
<p>Crown uses a number of third-party libraries located in the repository under the folder named “3rdparty”:</p>
<section id="bgfx-bsd-2-clause">
<h3>BGFX (BSD 2-clause)<a class="headerlink" href="#bgfx-bsd-2-clause" title="Permalink to this headline">¶</a></h3>
<p>Cross-platform rendering library.</p>
</section>
<section id="bx-bsd-2-clause">
<h3>BX (BSD 2-clause)<a class="headerlink" href="#bx-bsd-2-clause" title="Permalink to this headline">¶</a></h3>
<p>BGFX’s Base library.</p>
</section>
<section id="bimg-bsd-2-clause">
<h3>BIMG (BSD 2-clause)<a class="headerlink" href="#bimg-bsd-2-clause" title="Permalink to this headline">¶</a></h3>
<p>BGFX’s Image library.</p>
</section>
<section id="bullet-physics-sdk-zlib">
<h3>Bullet Physics SDK (Zlib)<a class="headerlink" href="#bullet-physics-sdk-zlib" title="Permalink to this headline">¶</a></h3>
<p>Real-time collision detection and multi-physics simulation for VR, games, visual effects, robotics, machine learning etc.</p>
</section>
<section id="freetype-freetype-project-license">
<h3>FreeType (FreeType Project LICENSE)<a class="headerlink" href="#freetype-freetype-project-license" title="Permalink to this headline">¶</a></h3>
<p>Software library to render fonts.</p>
</section>
<section id="lua-mit">
<h3>Lua (MIT)<a class="headerlink" href="#lua-mit" title="Permalink to this headline">¶</a></h3>
<p>Lua is a powerful, efficient, lightweight, embeddable scripting language.</p>
</section>
<section id="luajit-mit">
<h3>LuaJIT (MIT)<a class="headerlink" href="#luajit-mit" title="Permalink to this headline">¶</a></h3>
<p>A Just-In-Time Compiler for Lua.</p>
</section>
<section id="md5-zlib">
<h3>MD5 (Zlib)<a class="headerlink" href="#md5-zlib" title="Permalink to this headline">¶</a></h3>
<p>Independent implementation of MD5 (RFC 1321).</p>
</section>
<section id="openal-soft-lgpl">
<h3>OpenAL soft (LGPL)<a class="headerlink" href="#openal-soft-lgpl" title="Permalink to this headline">¶</a></h3>
<p>OpenAL Soft is an LGPL-licensed, cross-platform, software implementation of the OpenAL 3D audio API.</p>
</section>
<section id="stb-public-domain">
<h3>stb (Public domain)<a class="headerlink" href="#stb-public-domain" title="Permalink to this headline">¶</a></h3>
<p>single-file public domain (or MIT licensed) libraries for C/C++.</p>
</section>
<section id="tinyexpr-zlib">
<h3>tinyexpr (Zlib)<a class="headerlink" href="#tinyexpr-zlib" title="Permalink to this headline">¶</a></h3>
<p>TinyExpr is a very small recursive descent parser and evaluation engine for math expressions.</p>
</section>
<section id="ufbx-mit">
<h3>ufbx (MIT)<a class="headerlink" href="#ufbx-mit" title="Permalink to this headline">¶</a></h3>
<p>Single source file FBX file loader.</p>
</section>
</section>
</section>


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