Comments on: Announcing new physics engine in AS3

By: fifeiSky

fifeiSky — Sun, 28 Mar 2010 13:30:36 +0000

作为一个china的as编人员不的不佩服你，我正在研究物理引擎谢谢这是很好的资料

By: ozgur uksal

ozgur uksal — Fri, 03 Apr 2009 20:24:05 +0000

I don’t know the status of this engine, but I can tell that it seems better than the current ones even though I posting my comment three years after this engine was released. I used other engines, and didn’t see any support from any available engines for drawing the edge shape (yellow) as the ground.

Sincerely,

By: Flex Coding « Rameshgoud’s Flex Weblog

Flex Coding « Rameshgoud’s Flex Weblog — Sat, 25 Oct 2008 11:14:21 +0000

[...] RemoteObject vs WebService benchmark Nico Lierman :: Flex performance component Physics Engines Andre Michelle Moto Flash Physics Engine Scope Timothée Groleau :: Scope Chain and Memory waste in Flash MX [...]

By: FLEX CODING « welcome nandhu

FLEX CODING « welcome nandhu — Thu, 23 Oct 2008 03:52:30 +0000

[...] Andre Michelle [...]

By: Flex with Java « anil4it

Flex with Java « anil4it — Tue, 30 Sep 2008 12:23:45 +0000

By: Flex Coding « Panduramesh’s Weblog

Flex Coding « Panduramesh’s Weblog — Fri, 19 Sep 2008 12:20:53 +0000

By: Albert

Albert — Thu, 01 May 2008 14:39:53 +0000

for grid subdivision have you thought about quadtrees? would also be fairly fast for repositioning geometry?

By: jon

jon — Wed, 17 Jan 2007 04:42:49 +0000

runs great, 53 fps, firefox/pc/1 gig ram, 2ghz AMD

really great work as always andre

By: Lkke

Lkke — Tue, 17 Oct 2006 08:30:20 +0000

what do you think of a non-corner based method of grabbing these polys? You may not need it but it seems more intuitive for me to grab anywhere inside the polygons. I was thinking of creating maybe two mousesprings instead of the current one…

By: Matt Rix

Matt Rix — Tue, 19 Sep 2006 02:29:03 +0000

Hi, this looks really cool.

I was just wondering: What kind of license will this be released under? … And what am I allowed to do with the current source code?

Thanks,

-Matt

By: Paul

Paul — Fri, 08 Sep 2006 19:11:40 +0000

And I’d guess that Andre’s verlet engine will run a lot faster than ODE in AS3. His stuff seems pretty efficient and verlet is generally faster than a rigid body simulation like ODE.

Fun stuff!

By: AVisioN

AVisioN — Thu, 07 Sep 2006 23:41:29 +0000

Good work. Is this a sideeffect of our german weather these days ?

The problem with Javaode is that it`s a (API)wrapper and not rewritten in Java. And javaode already has it`s own problems.. so someone would port a port wich allready has problems. If this could end up well ?

By: mianwo

mianwo — Tue, 29 Aug 2006 08:28:20 +0000

Great work!!
Are these bricks rigid body?
How do you build those walls? Bezier curve?
It’s REALY fast and accurate, have you tried impliment joints?

Do you know ODE, the Open Dynamics Engine? There is also a java version ODEjava. with AS3, I think it’s possible to implement a AS version of ODE.

By: Dennis

Dennis — Mon, 28 Aug 2006 09:44:32 +0000

to Joe: Yes, I know, some experienced people can tidy their garbage themselves :)
Anyway the lag amounts to 20-50 ms. It’s noticable for smooth lineal motion.
And the most bad thing is GC works asynch, and there is no way to forecast this perfomance lag…

By: joa

joa — Sun, 27 Aug 2006 13:46:37 +0000

dennis, i can give you some advice. the garbage collector removes unused instances etc. so a possible workaround is to reuse your instances instead of creating thousands of new ones :)

this will speed up the garbage collection. of course you will recognize a lag in performance but a smaller one.

By: Paul

Paul — Thu, 24 Aug 2006 19:34:40 +0000

Andre, thanks for the great work! Love the performance of this engine (and AS3).

Can you tell us if you’ll implement more classes than just ..complex.RegularSpringPoly? I’m wondering if I should work on a RegularCircle, RegularWheel, etc.

Also, what do you think of a non-corner based method of grabbing these polys? You may not need it but it seems more intuitive for me to grab anywhere inside the polygons. I was thinking of creating maybe two mousesprings instead of the current one…

thanks-
Paul

By: Diego

Diego — Wed, 23 Aug 2006 09:56:11 +0000

excuse me, 35-38 :P

By: Diego

Diego — Wed, 23 Aug 2006 09:55:35 +0000

neat!
53-38 fps in Opera (amd 2ghz, 1gb ram)

By: Dennis

Dennis — Mon, 21 Aug 2006 10:36:17 +0000

I’ve noticed, that the motion speed is not constant (waving a little), more visible on weak machines. I have the same problem in my AS3 applications. I’ve tested them with getTimer() and found that some simple linear code snippet can be executed in 1 millisecond or in 50(!) milliseconds (rare but periodic).
Possible this is Garbage collector (runing several times in second). What should we do, guru?

Tell somebody to Adobe to make global property .disableGarbageCollector to disable it temporary if needed… :)

By: André Michelle

André Michelle — Mon, 21 Aug 2006 08:47:01 +0000

The springs are not integrated over time while the collision-response is acting. They are only updated each frame. For more corners, you should create the springs manually.