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    <p>If you looking for military simulations then: sorry but this get complicated. </p> <p><a href="http://www.delta3d.org/index.php" rel="noreferrer"><strong>Delta3D</strong></a> Open Source 3D gaming &amp; simulation engine used for military training simulations. It does include some vehicles and other 3D assets but not a huge amount, you can import 3dsmax8 .Max files.<br> You can add <a href="http://delta3d-extras.svn.sourceforge.net/viewvc/delta3d-extras/SimulationCore/trunk/" rel="noreferrer" title="Delta3D SimCore SVN Trunk">SimCore</a> to get HLA support plus munitions modeling and apparently even weather system. Plus you need a RTI e.g. <a href="http://savannah.nongnu.org/projects/certi" rel="noreferrer">CERTI</a> </p> <p>The common military Transmission and Interchange Formats are HLA and DIS (<em>and</em> <a href="http://cigi.sourceforge.net/" rel="noreferrer">CIGI</a>)<br> <a href="http://open-dis.sourceforge.net/Open-DIS.html" rel="noreferrer">Open-DIS</a> this is the Open source version of DIS, its mostly developed by US Navy and Airforce officers. They are currently considering using Project DarkStar for the distributed framework. </p> <p>An example game where DIS is use is ACM which while its rather old it does include DIS support. and the Unix version can be downloaded from <a href="http://www.websimulations.com/download.htm" rel="noreferrer">here</a></p> <p>There are a number of DIS C++ libraries available e.g. <a href="http://sourceforge.net/apps/mediawiki/kdis/index.php?title=Main_Page" rel="noreferrer">KDIS</a></p> <p>AFAIK DIS is still around but is largely superseded by HLA-RTI<br> You can find a list of OS and commercial RTIs on Wikipedia <a href="http://en.wikipedia.org/wiki/Run-Time_Infrastructure_%28simulation%29" rel="noreferrer">here</a></p> <p>The US has an "Open Source" simulator called <a href="http://www.onesaf.net/community/index.php?option=com_content&amp;task=view&amp;id=41&amp;Itemid=57" rel="noreferrer" title="OneSAF System Documentation">OneSAF</a> but it's open source only to government and military developers only. :( You can however download some docs from the website. <a href="http://www.strategypage.com/military_photos/military_photos_200522323.aspx" rel="noreferrer">Old Screenshot</a> from around 2004.</p>
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    1. POAre there any open-source military/war strategy simulating engines/frameworks?
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    1. COHLA is specifically defined as a standard for linking complete simulations together, not as means of organizing data exchange within single simulation. And it does in fact lack many features required for the latter. DIS... was vintage even when it was published in 90s. Military drags far behind in this area - if their standards are not required for certification, it's far better to use industry standards like OPC (OPC UA) and its derivatives.
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    2. CO@ima, yep but I don't really know what, Luvieer's intention is so I'm just pointing out what was and is still used for military sims. If He's looking to make it work with military simulations then HLA is necessary. For example MILES Systems use HLA or DIS so they work with other other military sims. e.g. http://www.inter-coastal.net/smotar.html DIS isn't dead just tried and tested.
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    3. COStudent's project obviously
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