Comments on: Papervision3D + Box2D

By: billy

billy — Thu, 29 Jan 2009 02:56:54 +0000

Unfortunately it seems the latest changes to the Box2dFlash API (build 33) have broken a few things. I will go in when I have some time and try to update everything to the latest revision, or if someone else wants to send me a fix — that’d be great!
It has been my experience working with the Box2dFlash library that they will make some rather drastic changes with the incremental builds in the SVN. If you are going to use it for a project I’d suggest locking in your version and refrain from updating too much or you’ll have to hunt down api changes. But I guess that’s life on the cutting edge eh?

Edit:
Without digging too deep into the new Box2dFlash changes, I’ve gotten the following to work —
In Box2dScene.as, line 144, change to
world.Step(timestep, iterations, iterations);
then just comment out line 180,
//md.timeStep = timestep;

By: Dean

Dean — Tue, 27 Jan 2009 05:21:57 +0000

Great work, im trying to explore your example but i am getting a 1046 error with Pv3dArrayEvent line 112 how can i fix this

By: Daniel Skrok « Daily Papervision3d

Daniel Skrok « Daily Papervision3d — Fri, 23 Jan 2009 04:03:34 +0000

[…] The physics is handled using Box2D and if anyone is curious, I’ve posted a little demo with source that shows an example of using it with PV3D. PaperBox2D: http://www.lamberta.org/blog/paperbox2d/ […]

By: davecon

davecon — Tue, 20 Jan 2009 14:52:44 +0000

Thank you Billy

By: billy

billy — Mon, 19 Jan 2009 20:41:24 +0000

@davecon, Those build numbers refer to revisions in the SVN. I just tested against the latest (as of this writing — PV3D: 865, Box2D: 30), and everything still works. Though you may receive some warning messages about a lack of type declarations in the Box2D source.
I include the build versions as a reference in case something breaks, that way I can roll back to a previous revision and see what went wrong. Consult the documentation on your SVN client of choice on how to use these features.

By: davecon

davecon — Mon, 19 Jan 2009 17:37:04 +0000

Hello dear it is very nice work

but i’m sorry to tell that i could not find
the PV3D build 856 and Box2DFlash build 28

would you please upload them so we can download from your site… :)

By: Stas

Stas — Wed, 07 Jan 2009 14:31:01 +0000

Thank You!
It was the old build of Box2DFlash.

By: billy

billy — Tue, 06 Jan 2009 22:57:17 +0000

Hello Stas,
I just upgraded to the latest sources and everything still seems to be in working order (that’s good!) — PV3D build 856 and Box2DFlash build 28.
From your errors I’d double check and make sure you’ve imported the Box2D debug draw:
import Box2D.Dynamics.b2DebugDraw;

Hope that helps!

By: Stas

Stas — Tue, 06 Jan 2009 14:33:19 +0000

HI, nice work! But I cannot compile your code, although I have all packages:

1061: call of not defined methode GetSprite ..

1061: .. Methode SetDrawScale ..

1061: .. Methode SetFillAlpha ..

1061:..Methode SetLineThickness ..

1061: .. Methode SetSprite ..
Iam a beginner, thast why it is a bad question.

By: billy

billy — Thu, 04 Dec 2008 18:50:27 +0000

Hi Eduardo,
You probably meant to reference ‘b2Body’. Box2D is a little funny like that when it comes to naming things.