Hello,surely a beginners question...I just read the sections in the FS2K scenery sdk about dynamic sceneries, which comes with a nice sample where planes, boats and trucks move around at O'Hare airport.But it is not reusable via simple copy'n paste. Especially the mix of C structures and Assembler scenery code baffles me a bit. It looks like the C structures have to be converted into Assembler macros.I started, but run into some difficulties, especially with flags and enumerations.Questions:- Does anybody already converted these samples and provided a tutorial (for dynamic sceneries)?- What is the relation between ATC traffic and dynamic sceneries? Do they coexist or does ATC traffic replace the "old" dynamic stuff?Thanks for any hint,Edgar

If you are interested in dynamic scenery, download the following:Fltrec.dll - http://www.avsim.com/hangar/utils/nav/ - there is one for fs98/2000 and another for fs2002.DOD3.0 - AVSIM or Flightsim LibraryScasm - http://www.scasm.de/The documentation will lead you in building dynamic objects.ATC controlled aircraft (AI) use flight plans to move the aircraft to taxi, takeoff, fly, land, and taxi to the gate.Dynamic objects are controlled in their scenery files (*.bgl) you make and place in your fs2002ADDON SCENERY or other scenery folder of your choosing. They move according to the motion model you supply using the Fltrec.dll and DOD program. The DOD program also uses SCASM to compile the motion model into the dynamic scenery file.The problem with the dynamic scenery files are that they can interfere with the AI.

Thanks for the links, I will have a look at these tools.Edgar