problem with sprites...

[gbh]

I have a physics game I have been working on using box2d and cocos2d. I got most of the physics worked out, but have been having a heck of a time associating the sprites with the physics objects. Does anyone have any suggestions regarding accomplishing that?

[dany_dev]

there is a template (and some example) for cocos2d + box2d, have you looked at these?

[adamk77]

Originally Posted by gbh

I have a physics game I have been working on using box2d and cocos2d. I got most of the physics worked out, but have been having a heck of a time associating the sprites with the physics objects. Does anyone have any suggestions regarding accomplishing that?

b2BodyDef has the userData property. You can set that to your sprite. For example, when you are creating the physics object:

b2BodyDef playerBodyDef;
playerBodyDef.type = b2_dynamicBody;
playerBodyDef.position.Set(self.position.x/PTM_RATIO, self.position.y/PTM_RATIO);

// Associate it with your sprite here
CCSprite *sprite = [CCSprite spriteWithFile:@"mySprite.png"];
playerBodyDef.userData = 

playerBodyDef.fixedRotation = true;
 
body = world->CreateBody(&playerBodyDef);
 
b2CircleShape circleShape;
circleShape.m_radius = 0.7;
b2FixtureDef fixtureDef;
fixtureDef.shape = &circleShape;
fixtureDef.density = 1.0f;
fixtureDef.friction = 1.0f;
fixtureDef.restitution =  0.0f;
body->CreateFixture(&fixtureDef);