C++ circular include

Question

I can\'t solve this circular dependency problem; always getting this error: \"invalid use of incomplete type struct GemsGame\" I don\'t know why the compiler doesn\'t know t

Answer 1

If you deference the pointer and the function is inline you will need the full type. If you create a cpp file for the implementation you can avoid the circular dependecy (since neither of the class will need to include each others .h in their headers)

Something like this:

your header:

#ifndef GEMELEMENT_H_INCLUDED
#define GEMELEMENT_H_INCLUDED

class GemsGame;

class GemElement {
    private:
        GemsGame* _gemsGame;

    public:
        GemElement();
};


#endif // GEMELEMENT_H_INCLUDED

your cpp:

#include "GenGame.h"
GenElement::GenElement()
{
   _gemsGame = application.getCurrentGame();
   _gemsGame->getGemsVector();
}