Attempt to decompile cheatIsUnlocked

src/include/constants.h

@@ -337,6 +337,7 @@
 #define DOORSTATEBIT_CLOSING 4
 #define DOORSTATEBIT_OPENING 8
 
+#define EEPROMFLAG_USED_TRANSFERPAK     0x23
 #define EEPROMFLAG_CI_TOUR_DONE         0x24
 #define EEPROMFLAG_CI_HOLO7_DONE        0x29
 #define EEPROMFLAG_CI_HOLO6_DONE        0x2a

src/include/game/game_19c990.h

@@ -13,7 +13,7 @@ u32 func0f19cbcc(void);
 u32 func0f19cc50(void);
 u32 func0f19ccc0(void);
 u32 func0f19cdf0(void);
-u32 func0f19cf20(void);
+s32 func0f19cf20(s32 stage_index); // firing range related
 u32 func0f19d250(void);
 u32 func0f19d25c(void);
 u32 func0f19d268(void);

src/include/gvars/gvars.h

@@ -703,6 +703,7 @@ extern u32 var800a2200;
 extern u32 var800a2204;
 extern u32 var800a2208;
 extern u32 var800a220c;
+extern u16 g_BestTimes[];
 extern u32 var800a22c0;
 extern u32 var800a22d0;
 extern u32 var800a2330;