On Tue, Jan 11, 2011 at 8:33 PM, Vivian Meazza wrote:
>
>
> I haven’t seen an problems so far, although I’m not sure why my aircraft
> was instantiated at one end of the runway, while the whole of KLM was taking
> off from the other. Perhaps we have a mismatch in the runway selection code,
> but that would have nothing to do with this update.
>
Not quite sure about the sim itself, but I believe the sim isn't waiting for
valid METAR before selecting the start-up runway (or it has a timeout and
doesn't always wait long enough).
AI traffic always waits for valid METAR, no matter how long it takes, to
avoid an immediate change of active runway. I guess that's why the sim and
AI traffic sometimes select the different runways - and why the AI traffic
is instantiated with some delay after start-up. Could be solved by waiting
for METAR before selecting the sim's runway - which may mean a longer
start-up delay though...
I would call this a good update.
>
Good :).
cheers,
Thorsten
>
>
> -----Original Message-----
> *From:* [mailto:bre...@gmail.com]
> *Sent:* 10 January 2011 20:55
> *To:* FlightGear developers discussions
> *Subject:* [Flightgear-devel] AI traffic performance update
>
>
>
> Hi,
>
> I've pushed a tiny update for AI traffic to flightgear/next. It improves
> performance at airports with busy AI traffic by avoiding repeated
> elevation/scenery checks for stationary aircraft. On my system this means a
> considerable frame rate improvement at EHAM (many AI aircraft parked at a
> gate). The improvement takes effect a short while after you started or got
> close to an airport. Once the parked AI aircraft have positioned and checked
> the scenery elevation, frame rate should improve.
>
> As a side effect, the update also changes (but doesn't fix) the behaviour
> of a bug (#221) concerning multiple aircraft occupying the same parking
> position: such models no longer climb upwards to infinity, but just remain
> idle and stacked on-top of each ( Bremer Town Musician's
> style<http://en.wikipedia.org/wiki/Town_Musicians_of_Bremen>:) ). A bit
> better than before.
>
> Unfortunately Durk isn't available for review. So let me know if you
> noticed any new problems related to stationary AI aircraft. Likewise if you
> see improved performance. If there are no new issues and it turns out to be
> an improvement for more people, we might add this to the release branch too.
> Otherwise we'll need to wait for Durk's AI expert advice.
>
> cheers,
> Thorsten
>
>
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