static void free_sdl_surface(SDL_Surface* surf)
{
    if(surf) {
        SDL_FreeSurface(surf);
    }
}

struct surface
{
public:
    surface()
        : surface_(nullptr)
    {}

    surface(SDL_Surface *surf)
        : surface_(surf, free_sdl_surface)
    {}

    surface(const surface& o)
        : surface_(o.surface_.get(), free_sdl_surface)
    {}

    // DO I NEED THIS IT DOESN'T BUILD
    surface& operator=(const SDL_Surface* s)
    {
        surface_ = std::make_shared(s);
        return *this;
    }

    surface& operator=(const surface& o)
    {
        surface_ = o.surface_;
        return *this;
    }

    operator SDL_Surface*() const { return surface_.get(); }

    SDL_Surface* get() const { return surface_.get(); }

    SDL_Surface* operator->() const { return surface_.get(); }

    bool null() const { return surface_.get() == nullptr; }

private:
    std::shared_ptr<SDL_Surface> surface_;
};