[Opensim-dev] Avatar physical capsule tilt in ODE, Mantis #2905

[Teravus Ovares]

+1

-Teravus

On 6/16/09, nlin <nlin.message at gmail.com> wrote:
> Hello people,
>
> I was investigating some physical avatar behavior with ODE and managed to
> fix the avatar capsule tilt that causes Mantis #2905 to occur and also
> causes other inconsistency in avatar movement (e.g. sometimes not being able
> to pass through thin passages). However, I noticed that the fixing the
> capsule tilt seems to cause the avatar to sink into the terrain if the slope
> is steep. I suspect that there may be some "fudge factors" in the physics
> code that were tuned to work with the leaning capsule which may need to be
> re-tuned, but I am not sure at this point.
>
> Removing the capsule tilt results in a consistently-behaving,
> straight-upright capsule. Even though this behavior is on the whole
> preferable, it may cause some hiccups for anything that was tuned to work
> with the old leaning avatar capsule.
>
> I was planning on going ahead and committing this patch. To avoid breaking
> anything that depends on the current behavior I will add an option to
> OpenSim.ini in the [ODEPhysicsSettings] section, something like
> "av_capsule_tilted = true" as the default with no change in behavior, and
> "false" as the corrected but not yet thoroughly verified mode. If no
> problems arise, we can later change "false" to the default.
>
> Any objections?
>
> Thanks,
> N Lin (nlin)
>
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