boolean getTeamMode_EM(void);
boolean isActivePlayer_EM(int);
+int getScreenFieldSizeX(void);
+int getScreenFieldSizeY(void);
+
void PlayLevelSound_EM(int, int, int, int);
void InitGraphicInfo_EM(void);
boolean CheckSingleStepMode_EM(byte action[], int, boolean, boolean, boolean);