-void KillHero(void);
-void BuryHero(void);
-void RemoveHero(void);
-int DigField(int, int, int, int, int);
-BOOL SnapField(int, int);
-BOOL PlaceBomb(void);
+void KillHero(struct PlayerInfo *);
+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 *);