Decompile ereader.c up to faraway island code

src/trainer_hill.c

@@ -3,6 +3,7 @@
 #include "battle.h"
 #include "battle_tower.h"
 #include "battle_setup.h"
+#include "ereader.h"
 #include "event_data.h"
 #include "event_scripts.h"
 #include "fieldmap.h"
@@ -32,8 +33,6 @@
 #include "constants/easy_chat.h"
 #include "constants/trainer_hill.h"
 
-extern bool32 sub_81D3B34(void);
-
 #define HILL_TAG_NORMAL 0
 #define HILL_TAG_VARIETY 1
 #define HILL_TAG_UNIQUE 2