extern int mScrollX, mScrollY;
extern int mScrollX_last, mScrollY_last;
-extern boolean redraw[2 + MAX_PLAYFIELD_WIDTH + 2][2 + MAX_PLAYFIELD_HEIGHT + 2];
-extern int TEST_flag;
-
-
-extern void InitScrollPlayfield();
+extern void InitScrollPlayfield(void);
extern void UpdatePlayfield(boolean);
-extern void RestorePlayfield();
+extern void RestorePlayfield(void);
extern void DDScrollBuffer_ScrollTo(int X, int Y);
extern void DDScrollBuffer_ScrollTowards(int X, int Y, double Step);