void InitMovDir(int, int);
void InitAmoebaNr(int, int);
void GameWon(void);
-BOOL NewHiScore(void);
+boolean NewHiScore(void);
void InitMovingField(int, int, int);
void Moving2Blocked(int, int, int *, int *);
void Blocked2Moving(int, int, int *, int *);
void EdelsteinFunkeln(int, int);
void MauerWaechst(int, int);
void MauerAbleger(int, int);
-void GameActions(int);
+void GameActions(void);
void ScrollLevel(int, int);
-BOOL MoveFigureOneStep(struct PlayerInfo *, int, int, int, int);
-BOOL MoveFigure(struct PlayerInfo *, int, int);
+boolean MoveFigureOneStep(struct PlayerInfo *, int, int, int, int);
+boolean MoveFigure(struct PlayerInfo *, int, int);
void ScrollFigure(struct PlayerInfo *, int);
void ScrollScreen(struct PlayerInfo *, int);
void BuryHero(struct PlayerInfo *);
void RemoveHero(struct PlayerInfo *);
int DigField(struct PlayerInfo *, int, int, int, int, int);
-BOOL SnapField(struct PlayerInfo *, int, int);
-BOOL PlaceBomb(struct PlayerInfo *);
+boolean SnapField(struct PlayerInfo *, int, int);
+boolean PlaceBomb(struct PlayerInfo *);
void PlaySoundLevel(int, int, int);
void RaiseScore(int);
void RaiseScoreElement(int);