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Newbie needs some help

R

Russ Barlow

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3
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us-kentucky
I have been using Air Manager to develop interactive 2D panels for FSX/P3D/ X-Plane. These panels can run on the local computer with the flight sim or on a networked computer (best way) and have touch control on a touch screen monitor. I have mostly been an X-P guy, but am trying to adapt some panels for FSX (specifically the Twin Otter Extended).

At first Air Manager only supported the basic MS Variables and Events, but a recent version allows direct access to LVARS.

I ran into some difficulty working on the flight director and IO have some XML code to better understand the operation, logic, and Lvars involved. It's almost Greek to me.

This XML code is perplexing to me. I am a retired Airline Pilot so most of my programming in Air Manager is Lua. I kind of get the RPN Stack thing, but the conditionals really confuse me. I don't know where the parenthesis should go with these long conditional statements. I'm sure given some time I could start to think like an old HP calculator but....

I will post the code and perhaps someone here can help me decipher it into I can reliably use. I think this is the most common way to create add-on panels and gauges so I figured for many here this would be old hat.

If I have posted in the wrong place, forgive me, but I didn't really know where it might best fit.
Thanks in advance

Russ


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The best forum for XML gauge related issue is http://fsdeveloper.com/forum/forums/gauges.64/ .
Just wait till a moderator moves your thread there.

Always keep in mind that FSX uses reverse polish notation. This means that, e.g. "(A + B) * C" is expressed as "A B + C *". The weird characters are just other ways to express "or" (||) and "and" (&&).

FSX'/ESP's SDK documentation provides a starting point to get into XML gauges.
https://msdn.microsoft.com/en-us/library/cc526953.aspx#mozTocId848419
https://msdn.microsoft.com/en-us/library/cc526953.aspx#Expression_Operators
 
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