cocos2d for iPhone

A fast, easy to use, free, and community supported 2D game engine

1. 

   robmerrell
   Member

   Hey guys,

   I ran into a bit of trouble when trying to use the Box2D example from 0.8.1 beta with a new project based on 0.8.1 rc. I get this error when calling: world = new b2World(worldAABB, gravity, doSleep);

   error: no matching function for call to 'b2World::b2World(b2AABB&, b2Vec2&, bool&)'
   note: candidates are: b2World::b2World(const b2Vec2&, bool)

   And 'not declared in this scope' errors when trying to use the b2CircleDef and b2PolygonDef classes.

   Am I missing something in my Box2D folders, or did the Box2D API significantly change between the 0.8.1 beta and rc? Being a newbie, it is hard to tell which...

   Thanks for the help!

   Rob

   Posted 2 years ago #
2. 

   tjweir
   Member

   What's the signature of b2World?

   In b2World.h, I have:
   b2World(const b2AABB& worldAABB, const b2Vec2& gravity, bool doSleep);

   Do you have the latest? Are you referencing an older version of Box2d?

   Posted 2 years ago #
3. 

   riq
   Key Master

   v0.8.1rc uses the latest box2d svn revision, which has some API changes.
   see the examples that come within cocos2d to see how to use the new box2d API.

   Posted 2 years ago #
4. 

   robmerrell
   Member

   Thanks Riq. That is what I suspected, but I wasn't completely sure. An updated HelloWorld example from Box2D cleared up a few of the API differences for me. Here it is in case anybody else has the same problem that I did.

   http://code.google.com/p/box2d/source/browse/trunk/Box2D/Examples/HelloWorld/HelloWorld.cpp

   Posted 2 years ago #

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