|
Jarod Godel
Utilitarian
Join date: 6 Nov 2003
Posts: 729
|
12-17-2003 13:38
I was trying to construct a chain last night as part of a dungeon scene -- not Dungeon Scene -- I was working on, but the chain kept exploding. I would put a loop in a loop in a loop in a loop and so forth. Then I would turn physics on. Common wsdon would make me think that physics beng on would keep the links/donuts/toruses from breaking about. However, everytime I did this, the links broke apart and sprang away from each other.
Has anyone ever seen this before? If so, did you ever resolve this issue? Has anyone made a chain before? If so, how?
Thanks.
|
|
Sapphire Bombay
Avatar
Join date: 8 Oct 2003
Posts: 341
|
12-17-2003 13:40
I've made chains just as you described. Are you leaving enough room between rings? Remember the 0.1 edge on physics objects. Try making a bigger set of rings.
_____________________
Avatar: A temporary manifestation or aspect of a continuing entity.
|
|
Carnildo Greenacre
Flight Engineer
Join date: 15 Nov 2003
Posts: 1,044
|
12-17-2003 14:08
I've heard of people making physical chains. I've also heard horror stories of those chains bringing sims to a grinding halt.
_____________________
perl -le '$_ = 1; (1 x $_) !~ /^(11+)\1+$/ && print while $_++;'
|
|
Jellin Pico
Grumpy Oldbie
Join date: 3 Aug 2003
Posts: 1,037
|
12-17-2003 14:25
From: someone Originally posted by Carnildo Greenacre
I've heard of people making physical chains. I've also heard horror stories of those chains bringing sims to a grinding halt. Really? How? Why? (pleez no big kompooter wurds) |
|
Nexus Nash
Undercover Linden
Join date: 18 Dec 2002
Posts: 1,084
|
12-17-2003 14:40
*sigh* this is why we have textures! The chain will only bring a sim to halt if it's physical... BTW don't sit on it, nasty things can happen to your ass... IE perm linkage when ever it explodes!
|
|
Sapphire Bombay
Avatar
Join date: 8 Oct 2003
Posts: 341
|
12-17-2003 15:11
Yep, this is best done with textures. But doing it with physics just for experimentation is really cool. Sure, do it in Cordova if you are going to do a long chain. But, if you are just exploring the physics engine, chains are fun.
_____________________
Avatar: A temporary manifestation or aspect of a continuing entity.
|
|
Andrew Linden
Linden staff
Join date: 18 Nov 2002
Posts: 692
|
12-17-2003 18:05
I've seen physical chains work before. Over someone's shoulder I watched Charlie Omega play with a double-chained swing in Olive (back when it was a sandbox) with some success.
The trick, of course, is that the links in the chain work best when they're very large, so that the 0.1 meter "collision tolerance" of the Havok-1 physics engine is less noticable.
So, if the chain links are less than about 2 times the collision tollerance in cross-section, or less than the cross-section plus two collision tolerances on the inside, then there is absolutely NO CHANCE they will be stable.
|
|
Cornelius Bach
Lord of Typos
Join date: 30 Jul 2003
Posts: 241
|
12-18-2003 13:54
I was actually trying to simulate a suspension system on one of my jeeps this way. Wasn't a pretty outcome. I hit forward, <KABOOM> I was a couple sims away with an axel in my <KABOOM>
|