Hi, Finally, somebody noticed this. :-) I've seen the problem a couple of times, and have rough idea as to what is going on. Earlier this summer, I fixed a problem where vertical speed was not properly handled in some cases after landing. This would result in a race between the ground handling code, forcing the plane to remain at ground elevation level, and the erroneous vertical speed variable, trying to push the aircraft into the terrain. This usually happened after landing, and resulted in similar behavior as what we see here, except that the motion was downward, and here we see it going in an upwards direction. The looping is due to the fact that when on ground, the pitch angle is directly related to vertical speed, so if you see a plane inverted, there should be a corresponding high speed. The current AI code, eventually pushes the vertical speed variable down to zero, which is why the odd bahavior usually settles down after a few minutes.
So, while the problem was fixed for aircraft that are landing, I think that there is still a place during the initialization where vertical speed isn't set correctly. I still haven't had a chance to sit down and track this bug though. Are you sure there is no AI traffic activity anymore whatsoever after a while? This could be happening when you fiddle with the time parameters (i.e. adjust your time settings while flightgear is running, but other than that, I have never seen that. And it seems to be unrelated to the dancing AI Aircraft. Cheers, Durk On 24 Oct 2010, at 11:36, fiers...@zonnet.nl wrote: > Hi > > Again, at EHAM. Five planes stalled in what seems to be a very dangerous > looping: > > <AI-oddities02.jpg> > > After a while these artefacts disappeared but it seemed like AI-traffic > stopped altogether. When the picture was taken, there was other AI traffic > behaving naturally... > > m > > > ------------------------------------------------------------------------------ > Nokia and AT&T present the 2010 Calling All Innovators-North America contest > Create new apps & games for the Nokia N8 for consumers in U.S. and Canada > $10 million total in prizes - $4M cash, 500 devices, nearly $6M in marketing > Develop with Nokia Qt SDK, Web Runtime, or Java and Publish to Ovi Store > http://p.sf.net/sfu/nokia-dev2dev_______________________________________________ > Flightgear-devel mailing list > Flightgear-devel@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/flightgear-devel ------------------------------------------------------------------------------ Nokia and AT&T present the 2010 Calling All Innovators-North America contest Create new apps & games for the Nokia N8 for consumers in U.S. and Canada $10 million total in prizes - $4M cash, 500 devices, nearly $6M in marketing Develop with Nokia Qt SDK, Web Runtime, or Java and Publish to Ovi Store http://p.sf.net/sfu/nokia-dev2dev _______________________________________________ Flightgear-devel mailing list Flightgear-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/flightgear-devel
