The FOM is a set of XML files in [https://sourceforge.net/p/flightgear/fgdata/ci/next/tree/HLA/ fgdata/HLA/]
For some Subsystems split off from the existing FlightGear source, it's fairly easy to create an executable with its own property tree<ref>https://sourceforge.net/p/flightgear/mailman/message/34632142/</ref> and have shared C++ code to map FOM objects to property values. However, this is an implementation detail - the whole point of HLA and the FOM is that it makes no assumptions about what Federates do with the data.
==Current Status ==
Last updated: (
19/ 02/ 2016)
Currently, there is some very old HLA support in SimGear. This is very out of date and should be ignored.
* Pick up Environment Objects for this instance and use them to set the local METAR string for weather generation.
We currently have the following other Federates:
* '''fgogel''' - An AI model written in python the publishes over to the RTI. Part of SimKit, but handy nevertheless!