+void bd_open_all(void);
+void bd_close_all(void);
+
+int map_action_RND_to_BD(int);
+int map_action_BD_to_RND(int);
+
+boolean checkGameRunning_BD(void);
+boolean checkGamePlaying_BD(void);
+boolean checkBonusTime_BD(void);
+int getFramesPerSecond_BD(void);
+int getTimeLeft_BD(void);
+
+void InitGfxBuffers_BD(void);
+
+void setLevelInfoToDefaults_BD_Ext(int, int);