box2d - c++ - raw pointer to shared_ptr -


i'm using box2d , may know, holds void* object can use reference when collisions occur between different entities. problem original item saved inside shared_ptr since ownership unknown , different classes (example player class) can 'equip' class (weapon).

i'm wondering if possible put pointer inside shared_ptr , refer same object original one?

this example:

std::vector<std::shared_ptr<environment>> listenvironment; listenvironment.push_back(std::make_shared(new weapon()));  //takes void pointer box2d->userid = listenvironment.back().get();  //some shit happens somewhere else , collision occurs , pointer box2d's callback:  environment* envptr = static_cast<environment*>(box2d->userid);

as can see envptr going cause trouble. there way refer old smart-pointer , increase reference value?

ps:

in actuality every class creates box2d body holds 'this' pointer don't have address smart-pointer either. example above kind narrowed down give hint of problem i'm facing.

best regards nilo

if environment has std::enable_shared_from_this<environment> parent class then, yes. call envptr->shared_from_this().


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