-extern void ExplodeFieldSP(int si);
-extern int subAnimateExplosion(int si);
-extern int subClearFieldDueToExplosion(int si);
-extern int subFollowUpExplosions();
-extern int subRedDiskReleaseExplosion();
+
+extern void ExplodeFieldSP(int);
+extern void subAnimateExplosion(int);
+extern void subClearFieldDueToExplosion(int);
+extern void subFollowUpExplosions(void);
+extern void subRedDiskReleaseExplosion(void);