[Opensim-dev] Avatar sinking into the terrain

Oren Hurvitz orenh at kitely.com
Mon Jul 16 09:52:58 UTC 2012


Hi,

I want to bring up again the problem of avatars sinking into the terrain.
This problem has been discussed since at least 2008. Here are some previous
bug reports:

http://opensimulator.org/mantis/view.php?id=2905 (starts as another problem,
but morphs into the terrain problem)
http://opensimulator.org/mantis/view.php?id=2717
http://opensimulator.org/mantis/view.php?id=4184

I fiddled with various ODE settings as suggested in these bug reports, but
there wasn't much improvement. Increasing av_capsule_radius helps a little,
but then avatars have other problems (e.g., can't walk through doorways) so
it's not a good solution. Increasing av_capsule_standup_tensor helps reduce
the frequency of having the avatar's legs fold, but the avatar still sinks
into the terrain; just with straight legs. I also switched to Bullet physics
as a sanity check, and the problem disappeared, but Bullet isn't yet ready
to replace ODE.

Is there any update about this problem? Any known workarounds? I can always
get out of the terrain simply by walking, but preferably this problem won't
happen in the first place.

Thanks,
Oren

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