Comments for Edge of the Universe

Comment on Check the Filter by XyrisKenn

XyrisKenn — Thu, 28 Jan 2010 09:36:32 +0000

Hi f, thank you for writing. I don’t have a Ball.mm class, as the tutorial and Cocos forum notes were distilled from my game code which has gotten complex.
But I can say that the trick is just to make sure your Game class and Ball (or game piece class) can talk to each other.

A variable like: Game *gamescene, @property (nonatomic, readonly, retain) gamescene gets added to Ball.mm. This lets the Ball external class find out about the Box2D world.

In Game.mm, add a @class Ball note and of course Ball *myBall, @property (nonatomic, readonly, retain) myBall. This lets the main Game class communicate with the Ball class.

Then in Ball.mm, refer to the game as [[self gamescene] world]->GetJointList() for example.

If you have methods in both Ball.mm and Game.mm to call and set each other’s details and variables, it becomes easier.
For example, I add the Ball’s texture from Game.mm by calling a method in Ball.mm, ‘addSprite’: [myBall addSprite];

I hope this helps.

Cheers,
Kenn.

Comment on Check the Filter by f

Tue, 19 Jan 2010 12:15:16 +0000

Thanks for this, I am just starting to play with BOX2d.

I am having some troubles grasping how to integrate box2d on external classes, like you have on Ball.mm

Can you post a link to your complete class?

Comment on The Manifold Ways to Listen by XyrisKenn

XyrisKenn — Mon, 30 Nov 2009 22:28:26 +0000

Thanks Eric, I appreciate your words. Good idea on downloadable code.

Comment on The Manifold Ways to Listen by Eric

Eric — Mon, 30 Nov 2009 21:40:57 +0000

Great tutorial, very helpful and informative.

My only suggestion for making this better is to have a downloadable xcode example so that it could be easily walked thru and modified to aid in learning.

Great job though, please keep these tutorials coming!

Comment on The Manifold Ways to Listen by XyrisKenn

XyrisKenn — Tue, 03 Nov 2009 00:39:37 +0000

Thank you Joe, I appreciate your compliment, and am glad this was helpful to you

Comment on The Manifold Ways to Listen by Joe

Joe — Mon, 02 Nov 2009 19:31:56 +0000

Great tutorial! I was really confused with all sorts of documentation out there for Box2D (different versions, out of date examples/tutorials), that it really discouraged me. I was looking for a good tutorial on Box2D ContactListeners, and this blog post nailed it! Thanks!

Comment on Sparks are flying! by XyrisKenn

XyrisKenn — Mon, 05 Oct 2009 08:51:40 +0000

Thanks! A little bit of progress, but lots of work to do still.

Comment on Sparks are flying! by Anonymous from Podebrady

Anonymous from Podebrady — Mon, 05 Oct 2009 08:27:44 +0000

Sounds like you’ve made a lot of progress. Looking forward to seeing it!