You can check it by using the TestPoint function available for the Fixtures.
- (void)ccTouchesBegan:(NSSet *)touches withEvent:(UIEvent *)event{ UITouch *myTouch = [touches anyObject]; CGPoint location = [myTouch locationInView:[myTouch view]]; location = [[CCDirector sharedDirector] convertToGL:location]; b2Vec2 locationWorld = b2Vec2(location.x/PTM_RATIO, location.y/PTM_RATIO); for (b2Body *b = world->GetBodyList(); b; b = b->GetNext()) { b2Fixture *f = b->GetFixtureList(); CCSprite *sprite =(CCSprite *) b->GetUserData(); if(sprite != NULL) { //Here there should be a userData (sprite) for this to work. if(f -> TestPoint(locationWorld)) { NSLog(@"You touched a body"); if (sprite.tag == 3) { //do something on touching a specific body. } } } }} |