[Flightgear-devel] Adding engine sounds to AI Aircraft

[Ron H. <rc...@gm...>]

Hello, I'm new-ish to FlightGear, and came across a forum post (here
<https://forum.flightgear.org/viewtopic.php?f=23&t=40746&sid=b9c6ebad1863529ac8c9359fc800fb16&start=15#p412831>)
on adding sounds to AI aircraft.
So I created a proof-of-concept (my current git patch here
<https://drive.google.com/file/d/14vggup8MZcdygtw1uT18qpy-pXT8KSpn/view?usp=drive_link>).
There are a lot of comments in generic-airliner-exhaust.xml to explain it.

I tested this heavily on 2020.3.18 and also patched and built on 'next' a
few days ago - no crashes or disasters.  (Using Windows 10, by the way).

Being new, I have more questions than answers, but here are a few:

   1. What can I do to help this possibly become part of a future
   FlightGear release?  I've read most of the fg wiki pages I could find on
   contributing, but still need some guidance on how to proceed.
   2. I found a strange "zombie" sound issue that I worked around by making
   sure I silence the sounds BEFORE the AI aircraft parks at the gate after
   arrival (sometimes gets stuck at 10 kts).  Feels like something is wrong in
   how "class FGAIAircraft" and related code shuts down the sound fx when
   parking.  I checked the bug list and did not see anything like this, I
   assume I can/should file a new ticket once I have good steps to recreate it
   (not hard).
   3. Watching AI Traffic on 2020.3.18 is very stable (I let it run
   overnight, and only observed issues that are documented, such as gridlock,
   etc).  But on 'next', I see some very strange problems with arriving
   aircraft: wrong glideslope on final approach, crazy pitch attitude as well
   during landing.  I'm happy to file a ticket for this too, if it is not
   already a known issue (I searched and did not see it, but I'm not very
   familiar with the bug list yet).

Thanks for reading this far!
Warm regards,
Ron

(Allow me to introduce myself a bit:
https://wiki.flightgear.org/User:Rchiicz)