7 files changed, 42 insertions, 16 deletions
diff --git a/include/constants/flags.h b/include/constants/flags.h
index de9a98b43..7f4655d4e 100644
--- a/include/constants/flags.h
+++ b/include/constants/flags.h
@@ -668,7 +668,7 @@
 #define FLAG_0x240               0x240
 #define FLAG_0x241               0x241
 #define FLAG_0x242               0x242
-#define FLAG_0x243               0x243
+#define FLAG_GOT_COIN_CASE               0x243
 #define FLAG_0x244               0x244
 #define FLAG_0x245               0x245
 #define FLAG_0x246               0x246
diff --git a/include/event_scripts.h b/include/event_scripts.h
index 91612c06b..310335196 100644
--- a/include/event_scripts.h
+++ b/include/event_scripts.h
@@ -1153,4 +1153,6 @@ extern const u8 EventScript_SafariRetire[];
 extern const u8 EventScript_SafariWarpOut[];
 extern const u8 EventScript_SafariOutOfBalls[];
 
+extern const u8 EventScript_ItemfinderDigUpUnderfootItem[];
+
 #endif //GUARD_EVENT_SCRIPTS_H
diff --git a/include/field_specials.h b/include/field_specials.h
index 9a85a8b49..b48dd34a5 100644
--- a/include/field_specials.h
+++ b/include/field_specials.h
@@ -3,6 +3,14 @@
 
 #include "global.h"
 
+enum HiddenItemAttr
+{
+    HIDDEN_ITEM_ID = 0,
+    HIDDEN_ITEM_FLAG,
+    HIDDEN_ITEM_QUANTITY,
+    HIDDEN_ITEM_UNDERFOOT
+};
+
 u8 GetLeadMonIndex(void);
 u8 CountDigits(u16 number);
 void TV_PrintIntToStringVar(u8, int);
@@ -14,5 +22,6 @@ u8 ContextNpcGetTextColor(void);
 void set_unknown_box_id(u8);
 u16 get_unknown_box_id(void);
 bool8 sub_80CC7B4(void);
+u16 GetHiddenItemAttr(struct HiddenItemStruct hiddenItem, u8 attr);
 
 #endif // GUARD_FIELD_SPECIALS_H
diff --git a/include/fieldmap.h b/include/fieldmap.h
index 9903962a1..7bedb1d94 100644
--- a/include/fieldmap.h
+++ b/include/fieldmap.h
@@ -23,5 +23,7 @@ bool8 MapGridIsImpassableAt(s32, s32);
 s32 GetMapBorderIdAt(s32, s32);
 bool32 CanCameraMoveInDirection(s32);
 u32 GetBehaviorByMetatileIdAndMapData(struct MapData *mapData, u16 metatile, u8 attr);
+const struct MapHeader * mapconnection_get_mapheader(struct MapConnection * connection);
+struct MapConnection * GetMapConnectionAtPos(s16 x, s16 y);
 
 #endif //GUARD_FIELDMAP_H
diff --git a/include/global.fieldmap.h b/include/global.fieldmap.h
index 3623737ea..bf142d265 100644
--- a/include/global.fieldmap.h
+++ b/include/global.fieldmap.h
@@ -120,26 +120,34 @@ struct CoordEvent
     u8 *script;
 };
 
+struct HiddenItemStruct
+{
+    u32 itemId:16;
+    u32 hiddenItemId:8; // flag offset to determine flag lookup
+    u32 quantity:7;
+    u32 isUnderfoot:1;
+};
+
+union BgUnion
+{ // carried over from diego's FR/LG work, seems to be the same struct
+    // in gen 3, "kind" (0x3 in BgEvent struct) determines the method to read the union.
+    u8 *script;
+
+    // hidden item type probably
+    struct HiddenItemStruct hiddenItem;
+
+    // secret base type
+    u32 secretBaseId;
+
+};
+
 struct BgEvent
 {
     u16 x, y;
     u8 unk4;
     u8 kind;
     // 0x2 padding for the union beginning.
-    union { // carried over from diego's FR/LG work, seems to be the same struct
-        // in gen 3, "kind" (0x3 in BgEvent struct) determines the method to read the union.
-        u8 *script;
-
-        // hidden item type probably
-        struct {
-            u8 filler6[0x2];
-            u16 hiddenItemId; // flag offset to determine flag lookup
-        } hiddenItem;
-
-        // secret base type
-        u32 secretBaseId;
-
-    } bgUnion;
+    union BgUnion bgUnion;
 };
 
 struct MapEvents
diff --git a/include/itemfinder.h b/include/itemfinder.h
index 2b882b144..de63e9362 100644
--- a/include/itemfinder.h
+++ b/include/itemfinder.h
@@ -1,6 +1,6 @@
 #ifndef GUARD_ITEMFINDER_H
 #define GUARD_ITEMFINDER_H
 
-void sub_813EC8C(u8 taskId);
+void ItemUseOnFieldCB_Itemfinder(u8 taskId);
 
 #endif //GUARD_ITEMFINDER_H
diff --git a/include/strings.h b/include/strings.h
index b0221b8e9..9ddce6044 100644
--- a/include/strings.h
+++ b/include/strings.h
@@ -324,4 +324,9 @@ extern const u8 gText_ThrowAwayStrVar2OfThisItemQM[];
 extern const u8 gText_BerryPouch[];
 extern const u8 gText_TheBerryPouchWillBePutAway[];
 
+// itemfinder
+extern const u8 gText_ItemfinderResponding[];
+extern const u8 gText_ItemfinderShakingWildly[];
+extern const u8 gText_NopeTheresNoResponse[];
+
 #endif //GUARD_STRINGS_H