One thing I don’t understand with this. Why 2 scripts in each and every
brick? Why not simply make the bricks physical and apply an external
force from the explosion. Script overhead in opensim is rather high and
this approach introduces a fair bit of script overhead in addition to
running the physics simulation itself.
Mike
On 04/22/2015 10:23 AM, Maxwell, Douglas CIV USARMY ARL (US) wrote:
The scripts that were used in the exploding wall video are now
available at our gitHub repo (link below). I invite you to download
and test them on your servers. If you see ways to optimize or better
leverage the existing physics capabilities of open sim, please feel
free to submit updates or discuss code changes.
https://github.com/M-O-S-E-S/opensim-scripting-library/tree/master/Exploding-Wall
Douglas Maxwell, MSME
Science and Technology Manager
Virtual World Strategic Applications
U.S. Army Research Lab
Human Research & Engineering Directorate
Simulation & Training Technology Center
(c)(407) 242-0209 <tel:%28407%29%20242-0209>
------------------------------------------------------------------------
*From:* [email protected]
[[email protected]] on behalf of Michael Emory
Cerquoni [[email protected]]
*Sent:* Tuesday, April 14, 2015 9:33 AM
*To:* [email protected]
*Cc:* [email protected]
*Subject:* Re: [Opensim-dev] New MOSES Physics Video
Could these test scripts be shared so testing against other engines
can occur as well, I would be interested to see how this same test
goes against ODE and BulletSim as well.
On Tue, Apr 14, 2015 at 8:18 AM, Maxwell, Douglas CIV USARMY ARL (US)
<[email protected] <mailto:[email protected]>>
wrote:
Good Morning, as you all know the MOSES developers are working on
PhysX integration into the Open Simulator to support functionality
currently not possible in the platform. We are a methodical group
and a couple months ago I asked one of our interns to work with
the developers to create a series of baseline physics behavior
case studies. The first case study is a destructible wall caused
by an explosive charge. This wall is composed of blocks that are
tested at a high density and a low density to simulate different
destruction effects.
The goal here is to eventually have all of the prims in the sim
loaded with the scripts needed to react to any type of random
explosive charge set by the participants in the training scenario.
The video can be found below:
https://youtu.be/jSofWcwWi7g
Your feedback is welcome.
Observations:
1) Current limitations of the open simulator prevent us from
expanding the tests beyond a simple wall.
2) The scripts exercise the engine well and expose limitations
between the sim frame rate and the physics frame rate.
3) It is easy to crash the sim with this demonstration,
especially if more than a handful of people are present (more than
3-4 client connections).
Douglas Maxwell, MSME
Science and Technology Manager
Virtual World Strategic Applications
U.S. Army Research Lab
Human Research & Engineering Directorate
Simulation & Training Technology Center
(c)(407) 242-0209 <tel:%28407%29%20242-0209>
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Michael Emory Cerquoni
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