<!DOCTYPE html> <head> <meta charset="utf-8" /> <!-- Set the viewport width to device width for mobile --> <meta name="viewport" content="width=device-width" /> <title>November 2016 recap</title> <link rel="stylesheet" href="http://opengamestudio.org/theme/css/normalize.css" /> <link rel="stylesheet" href="http://opengamestudio.org/theme/css/foundation.min.css" /> <link rel="stylesheet" href="http://opengamestudio.org/theme/css/style.css" /> <link rel="stylesheet" href="http://opengamestudio.org/theme/css/pygments.css" /> <script src="http://opengamestudio.org/theme/js/custom.modernizr.js"></script> <!-- So Firefox can bookmark->"abo this site" --> <link href="feeds/all.atom.xml" rel="alternate" title="Opensource Game Studio" type="application/atom+xml"> </head> <body> <!-- Nav Bar --> <nav> <!-- Show menu items and pages --> <div class="row"> <div class="large-12 columns top-bar"> <h1><a href="http://opengamestudio.org">Opensource Game Studio</a></h1> </div> </div> <div class="row top-menu"> <div class="large-12 columns"> <a href="/pages/projects.html" class="menu-button secondary">Projects</a> <a href="/pages/about.html" class="menu-button secondary">About</a> </div> </div> </nav> <!-- End Nav --> <!-- Main Page Content and Sidebar --> <div class="row"> <!-- Main Blog Content --> <div class="large-9 columns"> <article> <header> <h3 class="article-title"><a href="http://opengamestudio.org/2016-november-recap.html" rel="bookmark" title="Permalink to November 2016 recap">November 2016 recap</a></h3> </header> <h6 class="subheader" title="2016-12-15T00:00:00+03:00">Чт 15 Декабрь 2016 <a class="button secondary small translation-button" href="http://opengamestudio.org/2016-november-recap-ru.html">ru</a> </h6> <p><img alt="November recap" src="http://opengamestudio.org/2016-12-15_2016-november-recap.png" /></p> <p>This article describes the start of MJIN library separation into modules.</p> <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> <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> <p><strong>Run-time separation research.</strong></p> <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> <p>We created a sample project consisting of the application, library, and plugin. <strong>The application</strong> has been linked to the library and used it to load the plugin. <strong>The library</strong> provided functions to register plugins and call their functions. <strong>The plugin</strong> provided functions for the library and called library functions.</p> <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> <p><strong>Build-time separation start.</strong></p> <p>We extracted the following modules from MJIN:</p> <ul> <li> <p>Android: provides Java Native Interface (JNI) to MJIN</p> </li> <li> <p>Sound: provides access to OpenAL</p> </li> <li> <p>UIQt: provides access to Qt UI</p> </li> </ul> <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> <p>In the coming year, we're going to significantly restructure MJIN so that it suits as many platforms as possible.</p> <p>That's it for describing the start of MJIN library separation into modules.</p> <p class="subheader">Category: <a href="http://opengamestudio.org/category/news.html">News</a> </p> </article> </div> <!-- End Main Content --> <!-- Sidebar --> <aside class="large-3 columns"> <!--k <h5 class="sidebar-title">Site</h5> <ul class="side-nav"> <li><a href="http://opengamestudio.org/archives.html">Archives</a> <li><a href="http://opengamestudio.org/tags.html">Tags</a> <li><a href="http://opengamestudio.org/feeds/all.atom.xml" rel="alternate">Atom feed</a></li> </ul> <h5 class="sidebar-title">Categories</h5> <ul class="side-nav"> <li><a href="http://opengamestudio.org/category/news.html">News</a></li> </ul> --> <h5 class="sidebar-title">Ads</h5> <script async src="//pagead2.googlesyndication.com/pagead/js/adsbygoogle.js"></script> <!-- ogs2 --> <ins class="adsbygoogle" style="display:block" data-ad-client="ca-pub-4473792248813084" data-ad-slot="9024247127" data-ad-format="auto"></ins> <script> (adsbygoogle = window.adsbygoogle || []).push({}); </script> </aside> <!-- End Sidebar --> </div> <!-- End Main Content and Sidebar --> <!-- Footer --> <footer class="row"> <div class="large-12 columns"> <hr /> <div class="row"> <div class="large-7 columns"> <p>Proudly powered by <a href="http://getpelican.com">Pelican</a>, which takes great advantage of <a href="http://python.org">Python</a>.</p> </div> </div> </div> <script type="text/javascript"> var _gaq = _gaq || []; _gaq.push(['_setAccount', 'UA-3773114-1']); _gaq.push(['_trackPageview']); (function() { var ga = document.createElement('script'); ga.type = 'text/javascript'; ga.async = true; ga.src = ('https:' == document.location.protocol ? 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