[Opensim-dev] Attached Linksets and Collisions? (on SVN 10029)

[Teravus Ovares]

If you're testing revisions, you might want to try 10051 or above
since this revision was directed to fix this incorrect behavior in the
attach/rez code.

Regards

Teravus

On Sat, Jul 18, 2009 at 1:13 AM, John Sheridan<john at pseudospace.net> wrote:
> Gang,
>  Before I plug this into Mantis, I wanted to confirm this with the
> developers.  Recently I've been noticing that after teleporting in or
> attaching something my avatar has been getting bumped / tossed around
> quite a bit.  It occurred to me, that this seems like its typically a
> physical reaction - as if one were to be hit with a physical prim or
> collide into a static prim. So I looked up the top colliders in the
> estate tools and found a whole bunch of colliding prims (~300 in total)
> all at the same location and owned by me.  Which was strange enough on
> its own given the sim was empty of prims other then what was attached to
> my avatar.
>
>  So to test I removed all of my attachments then suddenly the
> collisions cleared.  When I re-attached everything they returned.  To
> dig a bit deeper, I rezzed my hair and shoes to the ground, and found
> that everything was normal, and the physics option was not ticked.  Out
> of curiosity, I set the hair and both shoes to phantom, took them back
> into inventory, then re-attached.  Surprisingly, no more collisions!
>
>  From the looks of this it seems that when attached, prims are either
> becoming physical and colliding with one another and the avatar, or more
> likely are remaining normal / static and just colliding with the avatar
> since they're not moving or flying haphazardly about as is typical of a
> physical prim when bumped.
>
>  Upon further testing though, I did however discover something rather
> interesting.  So far I've only tested with the skull attachment point,
> but when a single prim is attached it acts normally.  The avatar is not
> bumped when it rezzes and no collisions show in the estate tools.
> However, when two or more prims are linked and then attached the avatar
> is bumped around and it seems that only the prims in the linkset that
> are touching the avatar begin to register collisions within the estate
> tools.
>
> To reproduce this:
>
> 1 - rez a single prim to the ground
> 2 - take to inventory
> 3 - attach to skull
>
>  - Check the estate tools and no collisions show.
>
> 1 - rez several prims to the ground
> 2 - link them
> 3 - take to inventory
> 4 - attach to skull
>
>  - Check the estate tools and only the prims in the linkset which are
> touching the avatar will show.
>
> 1 - re-rez the linkset to the ground
> 2 - tick the phantom checkbox
> 3 - take to inventory
> 4 - attach to skull.
>
>  - Check the state tools and no collisions show.
>
> I wonder if per chance this is related to the recent oddness with logins
> / teleports / sim crossings where ODE has been going batty?
>
> Thanks, :)
>
>  - John / Orion Pseudo
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