extern int RefreshBoard(int scr);
extern int GlanceFunc(int scr, int y, int x, unsigned char type);
extern int ShadowFunc(int scr, int y, int x, unsigned char type);
extern int RefreshBoard(int scr);
extern int GlanceFunc(int scr, int y, int x, unsigned char type);
extern int ShadowFunc(int scr, int y, int x, unsigned char type);