void PlayLevelSound_EM(int, int, int, int);
void InitGraphicInfo_EM(void);
-void CheckSingleStepMode_EM(byte action[], int, boolean, boolean, boolean);
+boolean CheckSingleStepMode_EM(byte action[], int, boolean, boolean, boolean);
void SetGfxAnimation_EM(struct GraphicInfo_EM *, int, int, int, int);
void getGraphicSourceObjectExt_EM(struct GraphicInfo_EM *, int, int, int, int);