void RenderMonsters(SDL_Surface *screen, const geometry::Vector<int> &offset);
void RenderHeroes(SDL_Surface *screen, const geometry::Vector<int> &offset);
void RenderHeroTags(SDL_Surface *screen, const geometry::Vector<int> &offset);
void RenderMonsters(SDL_Surface *screen, const geometry::Vector<int> &offset);
void RenderHeroes(SDL_Surface *screen, const geometry::Vector<int> &offset);
void RenderHeroTags(SDL_Surface *screen, const geometry::Vector<int> &offset);