[Opensim-users] short avatars make world bounce

Thu May 31 06:14:30 UTC 2012

I finally got to try it out, and nothing seems to stop it.  I did find 
setting the capsule to low didn't help the bounce at all, but I could no 
longer walk up the steps.  And BTW, I make them not where near as steep 
as many in sl do.  They don't go more then half way up the calf of a 
normal real life sized AV.

I think it is a bug in opensim at this point.  It don't do it in a Type 
1 Viewer but does in the 2 and 3 viewers.  What is the difference in the 
two that causes this.  As more people are using Type 2+ veiwwers we have 
to find the issue.  I am hoping as someone else reported that the up 
coming 7.4 smoothes it out a bit.

Since I don't compile my own, and that version isn't on the 
opensimulator site yet, I guess I have to wait.  I use the vanila version ;)

Thanks for trying to help, I do appreciate it.
I guess my friend will have to bear with an adult avatar for a while.

hehe, it is ok, I really didn't need more work finding all the things 
kids in early 17th century Ryukyu used to play with.  (snicker).

InuYasha

On 5/29/2012 12:28 PM, dz wrote:
>
>     From: InuYasha Meiji <inuyasha.meiji at gmail.com
>     <mailto:inuyasha.meiji at gmail.com>>
>     To: opensim-users at lists.berlios.de
>     <mailto:opensim-users at lists.berlios.de>
>     Subject: Re: [Opensim-users] short avatars make world bounce
>
>
>     Well the last time I felt brave about those numbers was a few versions
>     back.  But found it a little rough.  I ened up unable to walk up the
>     steps or climb ladders very well.  Maybe ime to try again?
>
>     InuYasha.
>
>
>
>     On 5/21/2012 4:48 PM, Justin Clark-Casey wrote:
>     > If you're extremely brave, you could try adjusting some of the
>     numbers
>     > in [ODEPhysicsSettings] (copying from OpenSimDefaults.ini).
>      Lowering
>     > m_avatarobjectcontact_bounce might be interesting, for example.
>     > However, I haven't played much with these numbers so I'm not
>     sure what
>     > kind of effect that would have.
>     >
>     > On 20/05/12 06:30, InuYasha Meiji wrote:
>     >> I was wondering if anyone else noticed this in 7.3.1, but my
>     shorter
>     >> then usual for secondlife avatar seems to make the
>     >> world bounce all around it when I walk down my street. I have used
>     >> this same AV for a long time and just noticed this
>     >> going on. It is as if the world is one big trampoline now. Can
>     >> anything be done, besides making taller avatars?
>     >>
>     >> InuYasha
>
>
>
> I believe the bouncing is the result of the avatar "physics capsule" 
> interacting with the ground....
> a small enough avatar design would result in the capsule ALWAYS coming 
> in contact with the ground....
>
> As Justin indicated...there are a couple parameters in OPENSIM.INI 
> related to the physics of avatars...
> I believe the parameter he MEANT to describe was...
>     m_terraincontact_bounce = 0.05   ( instead of 
> "m_OBJECTcontact_bounce"... )
>
> In addition to the one he mentions...   I would experiment with these 
> parameters in the [ODEPhysicsSettings] section ...
>
>     ;girth of the avatar.  Adds radius to the height also
>     av_capsule_radius = 0.37
>
>     (try reducing this parameter to generate a smaller radius avatar 
> capsule)
>
> I didn't see any reference to how long ago you used your short 
> avatars, but a while back the default for this parameter changed..
> Maybe the old default works better for shorter avatars????
>
>     ; specifies if the capsule should be tilted (=true; old 
> compatibility mode)
>     ; or straight up-and-down (=false; better and more consistent 
> physics behavior)
>     av_capsule_tilted = false
>
>     (Use True instead of False)
>
> You might also look to see what happens if you toggle this parameter  
> to true....
>
>     ; Filtering collisions helps keep things stable physics wise, but 
> sometimes
>     ; it can be overzealous.  If you notice bouncing, chances are it's 
> that.
>     filter_collisions = false
>
> Please note that these parameters are documented in OLDER versions of 
> the OPENSIM.INI file..
> Apparently they have been removed from more current releases,  to 
> "prevent confusion"...
>
> While I do agree that it is hard to balance "Ease of Startup" against 
> full disclosure of ALL the possible parameter changes,
> This is one instance where removing them makes it  virtually  
> impossible for a developer to do anything other than ask for help
> and pray someone "remembers"  one of the now-hidden parameter 
> options...  Personally,  I think that while you classify the
> code as BETA, the benefits of exposing new users to ALL of the 
> available options GREATLY outweighs the difficulties of
> documenting what they all impact...
>
>
>
> _______________________________________________
> Opensim-users mailing list
> Opensim-users at lists.berlios.de
> https://lists.berlios.de/mailman/listinfo/opensim-users

-- 
________________________________________________________________
Opensim User: Standalone Grid on Version 0.7.3.1 with 56 Regions
on Windows 7, 64-bit. Phenom 9500 2.2 ghz Quad Core, Terabyte Hard
Drive, 8gig DDR2 RAM.  Used XAMPP to load PHP Version 5.3.0, Apache
and MySQL 5.1.41-community edition.  Groups, Profiles, Voice and
Offline Mesages all working. (Not yet Public, 6 users allowed Now).
________________________________________________________________