c++ - Define an object in a .cpp file -

header file

class universe {     public:         universe();         ~universe();      private:         chunkmanager chunkmanager; }; 

i want initialize chunkmanger without using default constructor. however, constructor want use takes object. how make chunkmanager object use correct constructor in .cpp file? want this:

universe::universe(){      world = new b2world(b2vec2(0, 0));     world->setallowsleeping(false);      //i want because constructor want takes world object     chunkmanager = new chunkmanager(world);      player = new player(world); } 

chunkmanager in header object not pointer, chunkmanager = new chunkmanager(world); wrong.

you can leave object , initialize this:

universe::universe() : chunkmanager(world) { 

but don't have world yet (unless can pass parameter). easiest solution make header have pointer:

private:         chunkmanager* chunkmanager; 

and .cpp ok.

edit: assume kenny ostram getting @ in comments since you've dynamically allocated chunkmanager need sure delete @ point (probably destructor) avoid memory leak.