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

[Melanie]

+1

Teravus Ovares wrote:
> +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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>>
>>
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