How do you do this? Making standard parts is fairly simple as you just make the 3d model, add a collision mesh, copy and paste a config file from another part and tweak it to your needs, but how do you make something that you intend to function completely different from stock parts. For example, the interstellar mod has a warp plugin, nuclear reactors, new fuels and resources etc etc etc, which to the stock game should mean absolutely nothing. I would like to make a whole new fuel system that extends the realism of engine ignition, a bit like the engine igniter plugin, but with a bit more depth to it. The only problem with this is I can't start typing things like UDMH and RP-1 into part configs because the game is not programmed to compute resources like that. So, all I am really asking is how to you access the game code and program into it to start variables like UDMH and RP-1 to act as resources for the game and can be used as propellants etc. I know the game runs on c#. Any help would be great Links to info pages about these things would be appreciated a lot