<div dir="ltr"><div><div><div>Hi!<br><br></div>An excellent video on the physics of exploding grenades and the wall. On the OS Dev list Mister Blue has an excellent observation that the server crashes are due to the extreme amount of changes that have to be sent to every avatar. His idea of a client side solution might just be a good one. In the end is there any way that OpenSim can handle more events than that in it's present form? Is there any physics engine that can handle 240 moving scripted objects moving at once without lag?<br></div>If we could get OS to the point that it would handle this load easily, we would have all our load issues solved!<br><br></div>Steve LaVigne<br></div><div class="gmail_extra"><br><div class="gmail_quote">On Tue, Apr 14, 2015 at 6:33 AM, Michael Emory Cerquoni <span dir="ltr"><<a href="mailto:nebadon2025@gmail.com" target="_blank">nebadon2025@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr">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.<br></div><div class="gmail_extra"><br><div class="gmail_quote"><div><div class="h5">On Tue, Apr 14, 2015 at 8:18 AM, Maxwell, Douglas CIV USARMY ARL (US) <span dir="ltr"><<a href="mailto:douglas.maxwell3.civ@mail.mil" target="_blank">douglas.maxwell3.civ@mail.mil</a>></span> wrote:<br></div></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div><div class="h5">
<div>
<div style="direction:ltr;font-family:Tahoma;color:#000000;font-size:10pt">
<div>
<p>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. </p>
<p> </p>
<p>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.</p>
<p> </p>
<p>The video can be found below:</p>
<p> </p>
<p><a href="https://youtu.be/jSofWcwWi7g" target="_blank">https://youtu.be/jSofWcwWi7g</a></p>
<p> </p>
<p>Your feedback is welcome.</p>
<p> </p>
<p>Observations:</p>
<p>1) Current limitations of the open simulator prevent us from expanding the tests beyond a simple wall.</p>
<p>2) The scripts exercise the engine well and expose limitations between the sim frame rate and the physics frame rate.</p>
<p>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).</p>
<p> </p>
<div style="FONT-SIZE:13px;FONT-FAMILY:Tahoma">
<div style="FONT-SIZE:13px;FONT-FAMILY:Tahoma"><span style="WHITE-SPACE:normal;WORD-SPACING:0px;TEXT-TRANSFORM:none;FLOAT:none;COLOR:rgb(34,34,34);FONT:13px arial,sans-serif;DISPLAY:inline!important;LETTER-SPACING:normal;BACKGROUND-COLOR:rgb(255,255,255);TEXT-INDENT:0px">Douglas
Maxwell, MSME</span><br style="WHITE-SPACE:normal;WORD-SPACING:0px;TEXT-TRANSFORM:none;COLOR:rgb(34,34,34);FONT:13px arial,sans-serif;LETTER-SPACING:normal;BACKGROUND-COLOR:rgb(255,255,255);TEXT-INDENT:0px">
<span style="WHITE-SPACE:normal;WORD-SPACING:0px;TEXT-TRANSFORM:none;FLOAT:none;COLOR:rgb(34,34,34);FONT:13px arial,sans-serif;DISPLAY:inline!important;LETTER-SPACING:normal;BACKGROUND-COLOR:rgb(255,255,255);TEXT-INDENT:0px">Science and
Technology Manager</span><br style="WHITE-SPACE:normal;WORD-SPACING:0px;TEXT-TRANSFORM:none;COLOR:rgb(34,34,34);FONT:13px arial,sans-serif;LETTER-SPACING:normal;BACKGROUND-COLOR:rgb(255,255,255);TEXT-INDENT:0px">
<span style="WHITE-SPACE:normal;WORD-SPACING:0px;TEXT-TRANSFORM:none;FLOAT:none;COLOR:rgb(34,34,34);FONT:13px arial,sans-serif;DISPLAY:inline!important;LETTER-SPACING:normal;BACKGROUND-COLOR:rgb(255,255,255);TEXT-INDENT:0px">Virtual World
Strategic Applications</span><br style="WHITE-SPACE:normal;WORD-SPACING:0px;TEXT-TRANSFORM:none;COLOR:rgb(34,34,34);FONT:13px arial,sans-serif;LETTER-SPACING:normal;BACKGROUND-COLOR:rgb(255,255,255);TEXT-INDENT:0px">
<span style="WHITE-SPACE:normal;WORD-SPACING:0px;TEXT-TRANSFORM:none;FLOAT:none;COLOR:rgb(34,34,34);FONT:13px arial,sans-serif;DISPLAY:inline!important;LETTER-SPACING:normal;BACKGROUND-COLOR:rgb(255,255,255);TEXT-INDENT:0px">U.S. Army Research
Lab</span></div>
<div style="FONT-SIZE:13px;FONT-FAMILY:Tahoma"><span style="WHITE-SPACE:normal;WORD-SPACING:0px;TEXT-TRANSFORM:none;FLOAT:none;COLOR:rgb(34,34,34);FONT:13px arial,sans-serif;DISPLAY:inline!important;LETTER-SPACING:normal;BACKGROUND-COLOR:rgb(255,255,255);TEXT-INDENT:0px">Human
Research & Engineering Directorate</span><br style="WHITE-SPACE:normal;WORD-SPACING:0px;TEXT-TRANSFORM:none;COLOR:rgb(34,34,34);FONT:13px arial,sans-serif;LETTER-SPACING:normal;BACKGROUND-COLOR:rgb(255,255,255);TEXT-INDENT:0px">
<span style="WHITE-SPACE:normal;WORD-SPACING:0px;TEXT-TRANSFORM:none;FLOAT:none;COLOR:rgb(34,34,34);FONT:13px arial,sans-serif;DISPLAY:inline!important;LETTER-SPACING:normal;BACKGROUND-COLOR:rgb(255,255,255);TEXT-INDENT:0px">Simulation &
Training Technology Center</span><br style="WHITE-SPACE:normal;WORD-SPACING:0px;TEXT-TRANSFORM:none;COLOR:rgb(34,34,34);FONT:13px arial,sans-serif;LETTER-SPACING:normal;BACKGROUND-COLOR:rgb(255,255,255);TEXT-INDENT:0px">
<span style="WHITE-SPACE:normal;WORD-SPACING:0px;TEXT-TRANSFORM:none;FLOAT:none;COLOR:rgb(34,34,34);FONT:13px arial,sans-serif;DISPLAY:inline!important;LETTER-SPACING:normal;BACKGROUND-COLOR:rgb(255,255,255);TEXT-INDENT:0px">(c)<span> </span></span><a style="WHITE-SPACE:normal;WORD-SPACING:0px;TEXT-TRANSFORM:none;COLOR:rgb(17,85,204);FONT:13px arial,sans-serif;LETTER-SPACING:normal;BACKGROUND-COLOR:rgb(255,255,255);TEXT-INDENT:0px" href="tel:%28407%29%20242-0209" value="+14072420209" target="_blank">(407)
242-0209</a></div>
</div>
</div>
</div>
</div>
<br></div></div>_______________________________________________<br>
Opensim-dev mailing list<br>
<a href="mailto:Opensim-dev@opensimulator.org" target="_blank">Opensim-dev@opensimulator.org</a><br>
<a href="http://opensimulator.org/cgi-bin/mailman/listinfo/opensim-dev" target="_blank">http://opensimulator.org/cgi-bin/mailman/listinfo/opensim-dev</a><br>
<br></blockquote></div><span class="HOEnZb"><font color="#888888"><br><br clear="all"><br>-- <br><div>Michael Emory Cerquoni</div>
</font></span></div>
</blockquote></div><br></div>