text: #ifndef STAR_H_INCLUDED
  #define STAR_H_INCLUDED
  
  #include "demo.h"
  
  void init_starfield_2d(void);
  void starfield_2d(void);
  void scroll_stars(void);
  void draw_starfield_2d(BITMAP *bmp);
  
  void init_starfield_3d(void);
  void starfield_3d(void);
  void draw_starfield_3d(BITMAP *bmp);
  
  #endif
  