void setLevelInfoToDefaults_BD(void);
boolean LoadNativeLevel_BD(char *, int, boolean);
boolean SaveNativeLevel_BD(char *);
void setLevelInfoToDefaults_BD(void);
boolean LoadNativeLevel_BD(char *, int, boolean);
boolean SaveNativeLevel_BD(char *);
void PreparePreviewTileBitmap_BD(Bitmap *, int);
void SetPreviewTileBitmapReference_BD(Bitmap *);
void PreparePreviewTileBitmap_BD(Bitmap *, int);
void SetPreviewTileBitmapReference_BD(Bitmap *);
boolean use_native_bd_graphics_engine(void);
boolean use_bd_smooth_movements(void);
boolean use_bd_pushing_graphics(void);
boolean use_native_bd_graphics_engine(void);
boolean use_bd_smooth_movements(void);
boolean use_bd_pushing_graphics(void);