Start documenting stuff; make objects static where possible

asm/item_use.s

@@ -1731,7 +1731,7 @@ _080A1D54: .4byte sub_80A1D68
 sub_80A1D58: @ 80A1D58
 	push {lr}
 	ldr r0, _080A1D64 @ =sub_8107EB8
-	bl sub_812C3AC
+	bl UseFameChecker
 	pop {r0}
 	bx r0
 	.align 2, 0
@@ -1752,7 +1752,7 @@ sub_80A1D68: @ 80A1D68
 	bl sub_80563F0
 	bl sub_80A1184
 	ldr r0, _080A1D98 @ =c2_exit_to_overworld_2_switch
-	bl sub_812C3AC
+	bl UseFameChecker
 	adds r0, r4, 0
 	bl DestroyTask
 _080A1D8E:

asm/new_game.s

@@ -241,7 +241,7 @@ sub_8054A60: @ 8054A60
 	bl PlayTimeCounter_Reset
 	bl sub_80549AC
 	bl sub_806E0D0
-	bl sub_812D304
+	bl ResetFameChecker
 	ldr r0, [r6]
 	movs r1, 0xA4
 	lsls r1, 2

include/fame_checker.h

@@ -0,0 +1,9 @@
+#ifndef GUARD_FAME_CHECKER_H
+#define GUARD_FAME_CHECKER_H
+
+#include "main.h"
+
+void ResetFameChecker(void);
+void UseFameChecker(MainCallback savedCallback);
+
+#endif //GUARD_FAME_CHECKER_H