extern short WasJustMoving[MAX_LEV_FIELDX][MAX_LEV_FIELDY];
extern short WasJustFalling[MAX_LEV_FIELDX][MAX_LEV_FIELDY];
extern short CheckCollision[MAX_LEV_FIELDX][MAX_LEV_FIELDY];
+extern short CheckImpact[MAX_LEV_FIELDX][MAX_LEV_FIELDY];
extern short AmoebaNr[MAX_LEV_FIELDX][MAX_LEV_FIELDY];
extern short AmoebaCnt[MAX_NUM_AMOEBA];
extern short AmoebaCnt2[MAX_NUM_AMOEBA];