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<h1 class="page">jMonkeyEngine 3&#8201;&#8212;&#8201;Source Structure</h1>
<div id="preamble">
<div class="sectionbody">
<div class="paragraph">
<p>An overview of the source structure of the JME3 project. In order to support both Desktop and Android Java platforms, it was necessary to split the source code into several parts. This wiki page describes the packages and their purpose. Status: Up-to-date for JME3 beta.</p>
</div>
</div>
</div>
<div class="sect1">
<h2 id="structure-of-src-directory"><a class="anchor" href="#structure-of-src-directory"></a>Structure of src directory</h2>
<div class="sectionbody">
<div class="paragraph">
<p>You can build jME using the included build.xml script: <code>ant clean; ant jar; ant run</code>
When building the sources in a project created with another IDE,  include every folder under <code>src</code> in the project as its own separate source root.</p>
</div>
<div class="sect2">
<h3 id="core"><a class="anchor" href="#core"></a>Core</h3>
<table class="tableblock frame-all grid-all stretch">
<colgroup>
<col style="width: 50%;">
<col style="width: 50%;">
</colgroup>
<thead>
<tr>
<th class="tableblock halign-left valign-top">Source Package</th>
<th class="tableblock halign-left valign-top">Description</th>
</tr>
</thead>
<tbody>
<tr>
<td class="tableblock halign-left valign-top"><div class="content"><div class="paragraph">
<p>src/core</p>
</div></div></td>
<td class="tableblock halign-left valign-top"><div class="content"><div class="paragraph">
<p>The main package. Must always be included, as all other packages depend on it.</p>
</div></div></td>
</tr>
<tr>
<td class="tableblock halign-left valign-top"><div class="content"><div class="paragraph">
<p>src/core-effects</p>
</div></div></td>
<td class="tableblock halign-left valign-top"><div class="content"><div class="paragraph">
<p>Core effects like Water, PSSM etc.</p>
</div></div></td>
</tr>
<tr>
<td class="tableblock halign-left valign-top"><div class="content"><div class="paragraph">
<p>src/core-data</p>
</div></div></td>
<td class="tableblock halign-left valign-top"><div class="content"><div class="paragraph">
<p>Basic material definitions, shaders and fonts that are needed by most jME3 applications.</p>
</div></div></td>
</tr>
<tr>
<td class="tableblock halign-left valign-top"><div class="content"><div class="paragraph">
<p>src/core-plugins</p>
</div></div></td>
<td class="tableblock halign-left valign-top"><div class="content"><div class="paragraph">
<p>Important asset plugins, such as .j3o model loader, .obj loader, font loader, basic image loaders.</p>
</div></div></td>
</tr>
<tr>
<td class="tableblock halign-left valign-top"><div class="content"><div class="paragraph">
<p>src/desktop</p>
</div></div></td>
<td class="tableblock halign-left valign-top"><div class="content"><div class="paragraph">
<p>Must be included if deploying on desktop, applet or web start. <strong>Exclude Android</strong></p>
</div></div></td>
</tr>
<tr>
<td class="tableblock halign-left valign-top"><div class="content"><div class="paragraph">
<p>src/android</p>
</div></div></td>
<td class="tableblock halign-left valign-top"><div class="content"><div class="paragraph">
<p>Must be included if deploying on the Android platform. <strong>Exclude Desktop</strong></p>
</div></div></td>
</tr>
<tr>
<td class="tableblock halign-left valign-top"><div class="content"><div class="paragraph">
<p>src/lwjgl</p>
</div></div></td>
<td class="tableblock halign-left valign-top"><div class="content"><div class="paragraph">
<p>LWJGL OpenGL display implementation. <strong>Exclude Android</strong></p>
</div></div></td>
</tr>
</tbody>
</table>
</div>
<div class="sect2">
<h3 id="physics"><a class="anchor" href="#physics"></a>Physics</h3>
<table class="tableblock frame-all grid-all stretch">
<colgroup>
<col style="width: 50%;">
<col style="width: 50%;">
</colgroup>
<thead>
<tr>
<th class="tableblock halign-left valign-top">Source Package</th>
<th class="tableblock halign-left valign-top">Description</th>
</tr>
</thead>
<tbody>
<tr>
<td class="tableblock halign-left valign-top"><div class="content"><div class="paragraph">
<p>* src/jbullet</p>
</div></div></td>
<td class="tableblock halign-left valign-top"><div class="content"><div class="paragraph">
<p>Game Physics Engine, based on the jBullet framework. Desktop only. <strong>Exclude Bullet</strong></p>
</div></div></td>
</tr>
<tr>
<td class="tableblock halign-left valign-top"><div class="content"><div class="paragraph">
<p>* src/bullet</p>
</div></div></td>
<td class="tableblock halign-left valign-top"><div class="content"><div class="paragraph">
<p>Game Physics Engine, based on the native Bullet framework. Needs jme3-bullet-native or jme3-bullet-native-android (beta) <strong>Exclude jBullet</strong></p>
</div></div></td>
</tr>
<tr>
<td class="tableblock halign-left valign-top"><div class="content"><div class="paragraph">
<p>src/bullet-native</p>
</div></div></td>
<td class="tableblock halign-left valign-top"><div class="content"><div class="paragraph">
<p>Native Bullet implementation C++ classes. <strong>Exclude jBullet</strong></p>
</div></div></td>
</tr>
<tr>
<td class="tableblock halign-left valign-top"><div class="content"><div class="paragraph">
<p>src/jme3-bullet-native-android</p>
</div></div></td>
<td class="tableblock halign-left valign-top"><div class="content"><div class="paragraph">
<p>Native libraries needed for bullet (not jbullet) on android.</p>
</div></div></td>
</tr>
</tbody>
</table>
<div class="admonitionblock note">
<table>
<tr>
<td class="icon">
<i class="fa icon-note" title="Note"></i>
</td>
<td class="content">
<div class="paragraph">
<p>* Only one of the physics libraries can be used at a time as they replace each other.</p>
</div>
<div class="ulist">
<ul>
<li>
<p>jbullet</p>
</li>
</ul>
</div>
<div class="paragraph">
<p>or</p>
</div>
<div class="ulist">
<ul>
<li>
<p>bullet</p>
<div class="ulist">
<ul>
<li>
<p>with one or both &#8220;natives&#8221; library</p>
<div class="ulist">
<ul>
<li>
<p>bullet-native</p>
</li>
<li>
<p>jme3-bullet-native-android</p>
</li>
</ul>
</div>
</li>
</ul>
</div>
</li>
</ul>
</div>
</td>
</tr>
</table>
</div>
</div>
<div class="sect2">
<h3 id="plugins-and-extra-packages"><a class="anchor" href="#plugins-and-extra-packages"></a>Plugins and Extra packages</h3>
<table class="tableblock frame-all grid-all stretch">
<colgroup>
<col style="width: 50%;">
<col style="width: 50%;">
</colgroup>
<thead>
<tr>
<th class="tableblock halign-left valign-top">Source Package</th>
<th class="tableblock halign-left valign-top">Description</th>
</tr>
</thead>
<tbody>
<tr>
<td class="tableblock halign-left valign-top"><div class="content"><div class="paragraph">
<p>src/ogre</p>
</div></div></td>
<td class="tableblock halign-left valign-top"><div class="content"><div class="paragraph">
<p>Ogre3D model and scene loader. Supports skeletal and vertex animation, scene loading, and materials.</p>
</div></div></td>
</tr>
<tr>
<td class="tableblock halign-left valign-top"><div class="content"><div class="paragraph">
<p>src/xml</p>
</div></div></td>
<td class="tableblock halign-left valign-top"><div class="content"><div class="paragraph">
<p>Provides an XML im/exporter.</p>
</div></div></td>
</tr>
<tr>
<td class="tableblock halign-left valign-top"><div class="content"><div class="paragraph">
<p>src/jogg</p>
</div></div></td>
<td class="tableblock halign-left valign-top"><div class="content"><div class="paragraph">
<p>OGG/Vorbis loader to play .ogg sound files.</p>
</div></div></td>
</tr>
<tr>
<td class="tableblock halign-left valign-top"><div class="content"><div class="paragraph">
<p>src/niftygui</p>
</div></div></td>
<td class="tableblock halign-left valign-top"><div class="content"><div class="paragraph">
<p>Support for custom Graphical User Interfaces.</p>
</div></div></td>
</tr>
<tr>
<td class="tableblock halign-left valign-top"><div class="content"><div class="paragraph">
<p>src/blender</p>
</div></div></td>
<td class="tableblock halign-left valign-top"><div class="content"><div class="paragraph">
<p>Blender model importer</p>
</div></div></td>
</tr>
<tr>
<td class="tableblock halign-left valign-top"><div class="content"><div class="paragraph">
<p>src/networking</p>
</div></div></td>
<td class="tableblock halign-left valign-top"><div class="content"><div class="paragraph">
<p>SpiderMonkey networking package</p>
</div></div></td>
</tr>
<tr>
<td class="tableblock halign-left valign-top"><div class="content"><div class="paragraph">
<p>src/terrain</p>
</div></div></td>
<td class="tableblock halign-left valign-top"><div class="content"><div class="paragraph">
<p>Terrain generation tools</p>
</div></div></td>
</tr>
<tr>
<td class="tableblock halign-left valign-top"><div class="content"><div class="paragraph">
<p>src/vr</p>
</div></div></td>
<td class="tableblock halign-left valign-top"><div class="content"><div class="paragraph">
<p>Virtual reality</p>
</div></div></td>
</tr>
</tbody>
</table>
</div>
<div class="sect2">
<h3 id="tests-games-and-tools"><a class="anchor" href="#tests-games-and-tools"></a>Tests, Games and Tools</h3>
<table class="tableblock frame-all grid-all stretch">
<colgroup>
<col style="width: 50%;">
<col style="width: 50%;">
</colgroup>
<thead>
<tr>
<th class="tableblock halign-left valign-top">Source Package</th>
<th class="tableblock halign-left valign-top">Description</th>
</tr>
</thead>
<tbody>
<tr>
<td class="tableblock halign-left valign-top"><div class="content"><div class="paragraph">
<p>src/test</p>
</div></div></td>
<td class="tableblock halign-left valign-top"><div class="content"><div class="paragraph">
<p>Small sample Applications that demo individual jME3 features. jme3_test-data.jar</p>
</div></div></td>
</tr>
<tr>
<td class="tableblock halign-left valign-top"><div class="content"><div class="paragraph">
<p>src/test-data</p>
</div></div></td>
<td class="tableblock halign-left valign-top"><div class="content"><div class="paragraph">
<p>Data assets (jme3_test-data.jar) required by jme3_test samples.</p>
</div></div></td>
</tr>
<tr>
<td class="tableblock halign-left valign-top"><div class="content"><div class="paragraph">
<p>src/tools</p>
</div></div></td>
<td class="tableblock halign-left valign-top"><div class="content"><div class="paragraph">
<p>Tools and programs that help you use jme3.</p>
</div></div></td>
</tr>
</tbody>
</table>
</div>
</div>
</div>
<div class="sect1">
<h2 id="structure-of-lib-directory"><a class="anchor" href="#structure-of-lib-directory"></a>Structure of lib directory</h2>
<div class="sectionbody">
<div class="paragraph">
<p>JME3 depends on the following JARs and native libraries in the <code>lib</code> directory. The JAR libraries must be on the classpath.</p>
</div>
<div class="admonitionblock note">
<table>
<tr>
<td class="icon">
<i class="fa icon-note" title="Note"></i>
</td>
<td class="content">
<div class="paragraph">
<p>The jME3-<strong>natives</strong>.jar bundles contain the native libraries, those are necessary <code>.dll</code>, <code>.jnilib</code>, <code>lib<strong>.so</strong></code> files. You do not need to manually include native libraries on the java.library.path! jME3 handles the extraction of natives automatically via the JAR bundles.</p>
</div>
</td>
</tr>
</table>
</div>
<div class="ulist">
<ul>
<li>
<p>lib/android:</p>
<div class="ulist">
<ul>
<li>
<p>android.jar</p>
</li>
</ul>
</div>
</li>
<li>
<p>lib/bullet:</p>
<div class="ulist">
<ul>
<li>
<p>android, jME3-bullet-natives-android.jar, jME3-bullet-natives.jar, jarcontent (natives)</p>
<div class="admonitionblock note">
<table>
<tr>
<td class="icon">
<i class="fa icon-note" title="Note"></i>
</td>
<td class="content">
<strong>Only one version of jme3-jbullet OR jme3-bullet with &#8220;natives&#8221; library can be used.</strong>
</td>
</tr>
</table>
</div>
</li>
</ul>
</div>
</li>
<li>
<p>lib/jbullet:</p>
<div class="ulist">
<ul>
<li>
<p>asm-all.jar, jbullet.jar, stack-alloc.jar, vecmath.jar</p>
</li>
</ul>
</div>
</li>
<li>
<p>lib/jogg:</p>
<div class="ulist">
<ul>
<li>
<p>j-ogg-oggd.jar, j-ogg-vorbisd.jar</p>
</li>
</ul>
</div>
</li>
<li>
<p>lib/lwjgl:</p>
<div class="ulist">
<ul>
<li>
<p>jME3-lwjgl-natives.jar, jinput.jar, lwjgl.jar</p>
</li>
</ul>
</div>
</li>
<li>
<p>lib/niftygui:</p>
<div class="ulist">
<ul>
<li>
<p>nifty.jar, nifty-javadoc.jar, xmlpull-xpp3.jar, eventbus.jar</p>
</li>
<li>
<p>nifty-default-controls-javadoc.jar, nifty-default-controls.jar,</p>
</li>
<li>
<p>nifty-examples.jar, nifty-examples-javadoc.jar, nifty-style-black.jar</p>
</li>
</ul>
</div>
</li>
</ul>
</div>
</div>
</div>
<div class="sect1">
<h2 id="structure-of-jmonkeyengine3-jars"><a class="anchor" href="#structure-of-jmonkeyengine3-jars"></a>Structure of jMonkeyEngine3 JARs</h2>
<div class="sectionbody">
<div class="paragraph">
<p>After the build is complete (in the <code>dist</code> directory), you see that the jMonkeyEngine library is split up over several JAR files. This allows for better separation of the parts for different operating systems, projects etc.</p>
</div>
<table class="tableblock frame-all grid-all stretch">
<colgroup>
<col style="width: 33.3333%;">
<col style="width: 33.3333%;">
<col style="width: 33.3334%;">
</colgroup>
<thead>
<tr>
<th class="tableblock halign-left valign-top">JAR file</th>
<th class="tableblock halign-left valign-top">Purpose</th>
<th class="tableblock halign-left valign-top">External Dependence</th>
</tr>
</thead>
<tbody>
<tr>
<td class="tableblock halign-left valign-top"><div class="content"><div class="paragraph">
<p>dist/lib/jME3-core.jar</p>
</div></div></td>
<td class="tableblock halign-left valign-top"><div class="content"><div class="paragraph">
<p>Platform-independent core libraries (math, animation, scenegraph, Wavefront OBJ model support, etc)</p>
</div></div></td>
<td class="tableblock halign-left valign-top"><div class="content"><div class="paragraph">
<p>None</p>
</div></div></td>
</tr>
<tr>
<td class="tableblock halign-left valign-top"><div class="content"><div class="paragraph">
<p>dist/lib/jME3-effects.jar</p>
</div></div></td>
<td class="tableblock halign-left valign-top"><div class="content"><div class="paragraph">
<p>Core jME3 effects (Water, SSAO etc)</p>
</div></div></td>
<td class="tableblock halign-left valign-top"><div class="content"><div class="paragraph">
<p>None</p>
</div></div></td>
</tr>
<tr>
<td class="tableblock halign-left valign-top"><div class="content"><div class="paragraph">
<p>dist/lib/jME3-desktop.jar</p>
</div></div></td>
<td class="tableblock halign-left valign-top"><div class="content"><div class="paragraph">
<p>Desktop PC only jME3 libraries</p>
</div></div></td>
<td class="tableblock halign-left valign-top"><div class="content"><div class="paragraph">
<p>None</p>
</div></div></td>
</tr>
<tr>
<td class="tableblock halign-left valign-top"><div class="content"><div class="paragraph">
<p>dist/lib/jME3-plugins.jar</p>
</div></div></td>
<td class="tableblock halign-left valign-top"><div class="content"><div class="paragraph">
<p>Basic import plugins (OgreXML models and j3o XML)</p>
</div></div></td>
<td class="tableblock halign-left valign-top"><div class="content"><div class="paragraph">
<p>None</p>
</div></div></td>
</tr>
<tr>
<td class="tableblock halign-left valign-top"><div class="content"><div class="paragraph">
<p>dist/lib/jME3-blender.jar</p>
</div></div></td>
<td class="tableblock halign-left valign-top"><div class="content"><div class="paragraph">
<p>Blender model import plugin (Desktop only)</p>
</div></div></td>
<td class="tableblock halign-left valign-top"><div class="content"><div class="paragraph">
<p>None</p>
</div></div></td>
</tr>
<tr>
<td class="tableblock halign-left valign-top"><div class="content"><div class="paragraph">
<p>dist/lib/jME3-networking.jar</p>
</div></div></td>
<td class="tableblock halign-left valign-top"><div class="content"><div class="paragraph">
<p>&#8220;Spidermonkey&#8221; networking library</p>
</div></div></td>
<td class="tableblock halign-left valign-top"><div class="content"><div class="paragraph">
<p>None</p>
</div></div></td>
</tr>
<tr>
<td class="tableblock halign-left valign-top"><div class="content"><div class="paragraph">
<p>dist/lib/jME3-jogg.jar</p>
</div></div></td>
<td class="tableblock halign-left valign-top"><div class="content"><div class="paragraph">
<p>J-OGG audio plugin</p>
</div></div></td>
<td class="tableblock halign-left valign-top"><div class="content"><div class="paragraph">
<p>j-ogg-vorbisd.jar, j-ogg-oggd.jar</p>
</div></div></td>
</tr>
<tr>
<td class="tableblock halign-left valign-top"><div class="content"><div class="paragraph">
<p>dist/lib/jME3-terrain.jar</p>
</div></div></td>
<td class="tableblock halign-left valign-top"><div class="content"><div class="paragraph">
<p>Terrain system</p>
</div></div></td>
<td class="tableblock halign-left valign-top"><div class="content"><div class="paragraph">
<p>None</p>
</div></div></td>
</tr>
<tr>
<td class="tableblock halign-left valign-top"><div class="content"><div class="paragraph">
<p>dist/lib/jME3-jbullet.jar</p>
</div></div></td>
<td class="tableblock halign-left valign-top"><div class="content"><div class="paragraph">
<p>jBullet physics</p>
</div></div></td>
<td class="tableblock halign-left valign-top"><div class="content"><div class="paragraph">
<p>jbullet.jar, vecmath.jar, stack-alloc.jar, asm-all-3.1.jar</p>
</div></div></td>
</tr>
<tr>
<td class="tableblock halign-left valign-top"><div class="content"><div class="paragraph">
<p>dist/lib/jME3-bullet.jar</p>
</div></div></td>
<td class="tableblock halign-left valign-top"><div class="content"><div class="paragraph">
<p>Bullet physics (only jBullet <strong>or</strong> Bullet can be used)</p>
</div></div></td>
<td class="tableblock halign-left valign-top"><div class="content"><div class="paragraph">
<p>jME3-bullet-natives.jar</p>
</div></div></td>
</tr>
<tr>
<td class="tableblock halign-left valign-top"><div class="content"><div class="paragraph">
<p>dist/lib/jME3-niftygui.jar</p>
</div></div></td>
<td class="tableblock halign-left valign-top"><div class="content"><div class="paragraph">
<p>NiftyGUI support</p>
</div></div></td>
<td class="tableblock halign-left valign-top"><div class="content"><div class="paragraph">
<p>nifty.jar, nifty-default-controls.jar, eventbus.jar, xmlpull-xpp3.jar</p>
</div></div></td>
</tr>
<tr>
<td class="tableblock halign-left valign-top"><div class="content"><div class="paragraph">
<p>dist/lib/jME3-lwjgl.jar</p>
</div></div></td>
<td class="tableblock halign-left valign-top"><div class="content"><div class="paragraph">
<p>LWJGL Desktop Renderer</p>
</div></div></td>
<td class="tableblock halign-left valign-top"><div class="content"><div class="paragraph">
<p>lwjgl.jar, jME3-lwjgl-natives.jar, jinput.jar</p>
</div></div></td>
</tr>
<tr>
<td class="tableblock halign-left valign-top"><div class="content"><div class="paragraph">
<p>dist/lib/jME3-android.jar</p>
</div></div></td>
<td class="tableblock halign-left valign-top"><div class="content"><div class="paragraph">
<p>Android Renderer</p>
</div></div></td>
<td class="tableblock halign-left valign-top"><div class="content"><div class="paragraph">
<p>Android system</p>
</div></div></td>
</tr>
</tbody>
</table>
<div class="paragraph">
<p>Optional:</p>
</div>
<div class="ulist">
<ul>
<li>
<p>nifty-examples.jar</p>
</li>
<li>
<p>jME3-testdata.jar</p>
</li>
<li>
<p>nifty-style-black.jar (default nifty style)</p>
</li>
</ul>
</div>
</div>
</div>
<div class="sect1">
<h2 id="api-structure"><a class="anchor" href="#api-structure"></a>API Structure</h2>
<div class="sectionbody">
<div class="paragraph">
<p>For details see the <a href="https://javadoc.jmonkeyengine.org/v3.4.1-stable">javadoc</a>.</p>
</div>
</div>
</div>
<div class="sect1">
<h2 id="data-file-types"><a class="anchor" href="#data-file-types"></a>Data File Types</h2>
<div class="sectionbody">
<table class="tableblock frame-all grid-all stretch">
<colgroup>
<col style="width: 33.3333%;">
<col style="width: 33.3333%;">
<col style="width: 33.3334%;">
</colgroup>
<thead>
<tr>
<th class="tableblock halign-left valign-top">Path</th>
<th class="tableblock halign-left valign-top">File types</th>
<th class="tableblock halign-left valign-top">purpose</th>
</tr>
</thead>
<tbody>
<tr>
<td class="tableblock halign-left valign-top"><div class="content"><div class="paragraph">
<p>/Common/MatDefs/*/</p>
</div></div></td>
<td class="tableblock halign-left valign-top"><div class="literal"><pre> .glsllib</pre></div></td>
<td class="tableblock halign-left valign-top"><div class="content"><div class="paragraph">
<p>Standard ShaderLibs</p>
</div></div></td>
</tr>
<tr>
<td class="tableblock halign-left valign-top"><div class="content"><div class="paragraph">
<p>/Common/MatDefs/*/</p>
</div></div></td>
<td class="tableblock halign-left valign-top"><div class="literal"><pre> .j3md</pre></div></td>
<td class="tableblock halign-left valign-top"><div class="content"><div class="paragraph">
<p>Standard Material Definitions</p>
</div></div></td>
</tr>
<tr>
<td class="tableblock halign-left valign-top"><div class="content"><div class="paragraph">
<p>/Common/Materials/*/</p>
</div></div></td>
<td class="tableblock halign-left valign-top"><div class="literal"><pre> .j3m</pre></div></td>
<td class="tableblock halign-left valign-top"><div class="content"><div class="paragraph">
<p>Standard Material</p>
</div></div></td>
</tr>
<tr>
<td class="tableblock halign-left valign-top"><div class="content"><div class="paragraph">
<p>/Interface/Fonts/</p>
</div></div></td>
<td class="tableblock halign-left valign-top"><div class="literal"><pre> .fnt + .png</pre></div></td>
<td class="tableblock halign-left valign-top"><div class="content"><div class="paragraph">
<p>Standard Fonts</p>
</div></div></td>
</tr>
</tbody>
</table>
<div class="paragraph">
<p>See also: <a href="features.html#supported-formats" class="xref page">Supported Formats</a>.</p>
</div>
</div>
</div>
</article>
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