Move pelican site to obsolete-pelican subdirectory. Copy site-opengamestudio en/ru and index here
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en/news/2016-november-recap.html
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en/news/2016-november-recap.html
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<!DOCTYPE html>
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<html>
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<meta charset="utf-8">
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<head>
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<style>
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#header
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{
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background: #2BA6E3;
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padding: 0.7em;
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text-align: left;
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}
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#header a
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{
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color: white;
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text-decoration: none;
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padding: 0.5em 1em 0.5em 1em;
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}
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.news_item
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{
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background: #FFFFFF;
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width: 720px;
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padding: 1em;
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margin-top: 2em;
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margin-bottom: 2em;
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border: 1px solid #E0E0E0;
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text-align: left;
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}
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.news_item_contents
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{
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color: #444;
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line-height: 1.5em;
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}
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.news_item_date
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{
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margin-bottom: 2em;
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color: #aaa;
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}
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body
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{
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background: #FAFAFA;
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}
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code, pre
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{
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font-family: monospace, serif;
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font-size: 1em;
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color: #7f0a0c;
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}
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figure
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{
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margin: 0px;
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padding: 0px;
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}
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img
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{
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width: 720px;
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}
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html
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{
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font-family: sans-serif;
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}
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a
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{
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color: #3A91CB;
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text-decoration: none;
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}
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#lang
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{
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float: right;
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}
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figcaption
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{
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color: #aaa;
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}
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table
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{
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border-collapse: collapse;
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}
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table, th, td
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{
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border: 1px solid #aaa;
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padding: 0.5em;
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margin-top: 0.5em;
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margin-bottom: 0.5em;
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}
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</style>
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</head>
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<body>
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<center>
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<div id="header">
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<a href="../../en/news/index.html">News</a>
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<a href="../../en/page/games.html">Games</a>
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<a href="../../en/page/about.html">About</a>
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<div id="lang">
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<a href="2016-november-recap.html">EN</a>
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<a href="../../ru/news/2016-november-recap.html">RU</a>
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</div>
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</div>
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<h1>In the news</h1>
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<div class="news_item">
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<h2 class="news_item_title">
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<a href="2016-november-recap.html">November 2016 recap</a>
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</h2>
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<p class="news_item_date">
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2016-12-15 00:00
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</p>
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<div class="news_item_contents">
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<figure>
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<img src="../../images/2016-12-15_2016-november-recap.png" alt="Construction of a building" /><figcaption>Construction of a building</figcaption>
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</figure>
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<p>This article describes the start of MJIN library separation into modules.</p>
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<p>Once we built OpenSceneGraph for Android, it became obvious that some MJIN functionality is not suitable for Android. For example, UIQt provides a basis for OGS Editor UI. Since OGS Editor is a desktop application, we don’t need UIQt for Android.</p>
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<p>We decided to have a look at two approaches to separate MJIN into modules: build-time separation and run-time one. <strong>Build-time</strong> separation means MJIN becomes highly configurable and each platform gets specifically tailored MJIN build. <strong>Run-time</strong> separation means MJIN is divided into smaller libraries that are connected at run-time, which makes it easy to change functionality without rebuilding.</p>
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<p><strong>Run-time separation research.</strong></p>
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<p>Since run-time separation has more benefits, we started researching it first. The easiest way to achieve it was to use C API, because C ABI rules are much simpler than C++ one’s.</p>
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<p>We created a sample project consisting of the application, library, and plugin:</p>
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<ul>
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<li><strong>The application</strong> has been linked to the library and used it to load the plugin.</li>
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<li><strong>The library</strong> provided functions to register plugins and call their functions.</li>
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<li><strong>The plugin</strong> provided functions for the library and called library functions.</li>
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</ul>
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<p>The research was successful: the sample project worked correctly under Linux and Windows. However, since MJIN is currently a single large entity, we postponed C API application until we finish build-time separation.</p>
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<p><strong>Build-time separation start.</strong></p>
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<p>We extracted the following modules from MJIN:</p>
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<ul>
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<li>Android: provides Java Native Interface (JNI) to MJIN</li>
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<li>Sound: provides access to OpenAL</li>
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<li>UIQt: provides access to Qt UI</li>
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</ul>
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<p>Sound and UIQt modules are currently statically linked into MJIN library, while Android module is already a separate library due to JNI requirements.</p>
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<p>In the coming year, we’re going to significantly restructure MJIN so that it suits as many platforms as possible.</p>
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<p>That’s it for describing the start of MJIN library separation into modules.</p>
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</div>
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</div>
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</center>
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</body>
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</html>
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