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FSX External generated traffic

TOWSIM

TOWSIM

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130
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germany
Hi all,
I have the following problem:
I receive external generated aircraft from a network as DIS PDUs. The traffic shall be visible in the FSX/ESP simulator. Following the SDK documentation there are two comparable mechanisms used in the FSX/ESP simulator. The one would be the use of AI traffic, the other would be the multiplayer mode. As I understood, if I use AI traffic I have to freeze a couple of functions and have to deliver position and attitude to the simulator. The use of the multiplayer mode is not documented. My question would be: Am I right with my assumptions or is there a smart solution which would solve my problem. Or does anybody have a hint where to find a documentation which describes the multiplayer mode from the developer's point of view?
Thanks in advance
Mike
 
Hi Mike,

I recently wrote a program that interfaces true traffic read from a ADS-B radio receiver with FSX. I guess it's a problem similar to your.

I used AI aircrafts with waypoints list. I extrapolate the future position of the aircraft from its actual position, speed and vertical speed to set a waypoint. I redo this computation every two or three seconds.

An other technique would be to introduce a little delay (let say 30 sec) in the posititon of the AC in FSX, then you can set a waypoint at the present position without the need to extrapolate the future position.

Kind regards,

Patrick.
 
Hi Patrick,
thank you for the response. I meanwhile evaluated a lot of posts and came to the conclusion that AI traffic would be the best. I even found out how to setup the AI traffic for my purpose and how to freeze the attitude and position updates. A lot of developers reported their trouble with track smoothing. For the moment it seems to be sufficient for me. I deliver position and attitude updates as they appear on the network. That is about every 30 ms. My clients do not formation flying. They observe the external traffic always well separated by ATC. So a 'happy dog track' is not a big problem. Your solution sounds interesting. Whereby I would need a faster response to heading changes because 4 seconds in a visual traffic pattern can dramatically change the separation situation.
Thank you
Mike
 
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