void DrawDigit(int d, SDL_Surface *dest, const geometry::Vector<int> &position) const;
void DrawNumber(int n, SDL_Surface *dest, const geometry::Vector<int> &position, int digits = 0) const;
void DrawNumberRight(int n, SDL_Surface *dest, const geometry::Vector<int> &position, int digits = 0) const;
void DrawDigit(int d, SDL_Surface *dest, const geometry::Vector<int> &position) const;
void DrawNumber(int n, SDL_Surface *dest, const geometry::Vector<int> &position, int digits = 0) const;
void DrawNumberRight(int n, SDL_Surface *dest, const geometry::Vector<int> &position, int digits = 0) const;