std::vector<Missile*>::iterator iterMissile = game->missiles.begin();
        std::vector<Asteroid*>::iterator iterAsteroid = game->asteroids.begin();

        while (iterMissile != game->missiles.end()) {

            while (iterAsteroid != game->asteroids.end()){
                if (iterAsteroid.isHit(iterMissile){
                    delete iterMissile;
                    game->missiles.erase(iterMissile);
                }
                iterAsteroid++;
            }
            iterMissile++;
        }