[Opensim-dev] Avatar sinking into the terrain

[Justin Clark-Casey]

I'm afraid I can't help much.  I want to say that from previous discussions that with ODE this is due to the number of 
data points in the heightfield (see OdeScene.SetTerrain), there being 256 in each dimension.

However, this is little more than half remembered scraps - I don't immediately see why a lack of terrain samples would 
make the avatar sink - I would have thought the distance between heightmap points would be a smooth interpolation. 
However, it might be another thing to play with though the amount of heightmap data available may be effectively fixed 
by the SL system.

On 16/07/12 10:52, Oren Hurvitz wrote:
> 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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Justin Clark-Casey (justincc)
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