itemfinder through sub_813F004

asm/itemfinder.s

@@ -5,519 +5,6 @@
 
 	.text
 
-	thumb_func_start sub_813EC8C
-sub_813EC8C: @ 813EC8C
-	push {r4-r7,lr}
-	lsls r0, 24
-	lsrs r4, r0, 24
-	movs r2, 0
-	ldr r7, _0813ECE0 @ =gMapHeader
-	lsls r1, r4, 2
-	adds r0, r1, r4
-	lsls r3, r0, 3
-	ldr r5, _0813ECE4 @ =gTasks+0x8
-	adds r6, r1, 0
-	movs r1, 0
-_0813ECA2:
-	lsls r0, r2, 1
-	adds r0, r3
-	adds r0, r5
-	strh r1, [r0]
-	adds r0, r2, 0x1
-	lsls r0, 24
-	lsrs r2, r0, 24
-	cmp r2, 0xF
-	bls _0813ECA2
-	ldr r0, [r7, 0x4]
-	adds r1, r4, 0
-	bl sub_813EE14
-	lsls r0, 24
-	lsrs r0, 24
-	cmp r0, 0x1
-	bne _0813ECFC
-	bl sub_813F3EC
-	ldr r0, _0813ECE8 @ =gTasks
-	adds r1, r6, r4
-	lsls r1, 3
-	adds r1, r0
-	movs r2, 0x14
-	ldrsh r0, [r1, r2]
-	cmp r0, 0x1
-	bne _0813ECF0
-	ldr r0, _0813ECEC @ =sub_813EDB0
-	str r0, [r1]
-	b _0813ED08
-	.align 2, 0
-_0813ECE0: .4byte gMapHeader
-_0813ECE4: .4byte gTasks+0x8
-_0813ECE8: .4byte gTasks
-_0813ECEC: .4byte sub_813EDB0
-_0813ECF0:
-	ldr r0, _0813ECF8 @ =sub_813ED3C
-	str r0, [r1]
-	b _0813ED08
-	.align 2, 0
-_0813ECF8: .4byte sub_813ED3C
-_0813ECFC:
-	ldr r2, _0813ED10 @ =gUnknown_8416513
-	ldr r3, _0813ED14 @ =sub_813ED18
-	adds r0, r4, 0
-	movs r1, 0x2
-	bl DisplayItemMessageOnField
-_0813ED08:
-	pop {r4-r7}
-	pop {r0}
-	bx r0
-	.align 2, 0
-_0813ED10: .4byte gUnknown_8416513
-_0813ED14: .4byte sub_813ED18
-	thumb_func_end sub_813EC8C
-
-	thumb_func_start sub_813ED18
-sub_813ED18: @ 813ED18
-	push {r4,lr}
-	adds r4, r0, 0
-	lsls r4, 24
-	lsrs r4, 24
-	movs r0, 0
-	movs r1, 0x1
-	bl ClearDialogWindowAndFrame
-	bl sub_80696C0
-	bl ScriptContext2_Disable
-	adds r0, r4, 0
-	bl DestroyTask
-	pop {r4}
-	pop {r0}
-	bx r0
-	thumb_func_end sub_813ED18
-
-	thumb_func_start sub_813ED3C
-sub_813ED3C: @ 813ED3C
-	push {r4-r7,lr}
-	lsls r0, 24
-	lsrs r0, 24
-	lsls r1, r0, 2
-	adds r1, r0
-	lsls r6, r1, 3
-	ldr r7, _0813ED80 @ =gTasks+0x8
-	adds r4, r6, r7
-	movs r1, 0x6
-	ldrsh r0, [r4, r1]
-	movs r1, 0x19
-	bl __modsi3
-	lsls r0, 16
-	cmp r0, 0
-	bne _0813EDA2
-	movs r2, 0
-	ldrsh r0, [r4, r2]
-	movs r2, 0x2
-	ldrsh r1, [r4, r2]
-	bl GetPlayerDirectionTowardsHiddenItem
-	lsls r0, 24
-	lsrs r5, r0, 24
-	movs r1, 0x8
-	ldrsh r0, [r4, r1]
-	cmp r0, 0
-	bne _0813ED88
-	adds r0, r7, 0
-	subs r0, 0x8
-	adds r0, r6, r0
-	ldr r1, _0813ED84 @ =sub_813F364
-	str r1, [r0]
-	b _0813EDA8
-	.align 2, 0
-_0813ED80: .4byte gTasks+0x8
-_0813ED84: .4byte sub_813F364
-_0813ED88:
-	movs r0, 0x41
-	bl PlaySE
-	ldrb r0, [r4, 0xA]
-	adds r1, r5, 0
-	bl sub_813F40C
-	ldrh r0, [r4, 0xA]
-	adds r0, 0x1
-	strh r0, [r4, 0xA]
-	ldrh r0, [r4, 0x8]
-	subs r0, 0x1
-	strh r0, [r4, 0x8]
-_0813EDA2:
-	ldrh r0, [r4, 0x6]
-	adds r0, 0x1
-	strh r0, [r4, 0x6]
-_0813EDA8:
-	pop {r4-r7}
-	pop {r0}
-	bx r0
-	thumb_func_end sub_813ED3C
-
-	thumb_func_start sub_813EDB0
-sub_813EDB0: @ 813EDB0
-	push {r4-r6,lr}
-	lsls r0, 24
-	lsrs r0, 24
-	lsls r1, r0, 2
-	adds r1, r0
-	lsls r5, r1, 3
-	ldr r6, _0813EDE4 @ =gTasks+0x8
-	adds r4, r5, r6
-	movs r1, 0x6
-	ldrsh r0, [r4, r1]
-	movs r1, 0x19
-	bl __modsi3
-	lsls r0, 16
-	cmp r0, 0
-	bne _0813EE08
-	movs r1, 0x8
-	ldrsh r0, [r4, r1]
-	cmp r0, 0
-	bne _0813EDEC
-	adds r0, r6, 0
-	subs r0, 0x8
-	adds r0, r5, r0
-	ldr r1, _0813EDE8 @ =sub_813F3A8
-	str r1, [r0]
-	b _0813EE0E
-	.align 2, 0
-_0813EDE4: .4byte gTasks+0x8
-_0813EDE8: .4byte sub_813F3A8
-_0813EDEC:
-	movs r0, 0x41
-	bl PlaySE
-	bl sub_813F5AC
-	lsls r0, 24
-	lsrs r0, 24
-	strh r0, [r4, 0xE]
-	ldrh r0, [r4, 0xA]
-	adds r0, 0x1
-	strh r0, [r4, 0xA]
-	ldrh r0, [r4, 0x8]
-	subs r0, 0x1
-	strh r0, [r4, 0x8]
-_0813EE08:
-	ldrh r0, [r4, 0x6]
-	adds r0, 0x1
-	strh r0, [r4, 0x6]
-_0813EE0E:
-	pop {r4-r6}
-	pop {r0}
-	bx r0
-	thumb_func_end sub_813EDB0
-
-	thumb_func_start sub_813EE14
-sub_813EE14: @ 813EE14
-	push {r4-r7,lr}
-	mov r7, r10
-	mov r6, r9
-	mov r5, r8
-	push {r5-r7}
-	sub sp, 0x4
-	mov r8, r0
-	lsls r1, 24
-	lsrs r1, 24
-	mov r9, r1
-	mov r4, sp
-	adds r4, 0x2
-	mov r0, sp
-	adds r1, r4, 0
-	bl PlayerGetDestCoords
-	ldr r1, _0813EEC8 @ =gTasks
-	mov r2, r9
-	lsls r0, r2, 2
-	add r0, r9
-	lsls r0, 3
-	adds r0, r1
-	movs r1, 0
-	strh r1, [r0, 0xC]
-	movs r3, 0
-	mov r0, r8
-	ldrb r0, [r0, 0x3]
-	cmp r3, r0
-	bge _0813EF04
-_0813EE4E:
-	lsls r3, 16
-	asrs r1, r3, 16
-	mov r0, r8
-	ldr r2, [r0, 0x10]
-	lsls r0, r1, 1
-	adds r0, r1
-	lsls r7, r0, 2
-	adds r1, r7, r2
-	ldrb r0, [r1, 0x5]
-	mov r10, r3
-	cmp r0, 0x7
-	bne _0813EEF2
-	ldr r0, [r1, 0x8]
-	movs r1, 0x1
-	bl sub_80CC44C
-	lsls r0, 16
-	lsrs r0, 16
-	bl FlagGet
-	lsls r0, 24
-	cmp r0, 0
-	bne _0813EEF2
-	mov r1, r8
-	ldr r2, [r1, 0x10]
-	adds r2, r7, r2
-	ldrh r0, [r2]
-	adds r0, 0x7
-	mov r1, sp
-	ldrh r1, [r1]
-	subs r0, r1
-	lsls r0, 16
-	lsrs r5, r0, 16
-	ldrh r0, [r2, 0x2]
-	adds r0, 0x7
-	mov r3, sp
-	ldrh r1, [r3, 0x2]
-	subs r0, r1
-	lsls r0, 16
-	lsrs r4, r0, 16
-	adds r6, r4, 0
-	ldr r0, [r2, 0x8]
-	movs r1, 0x3
-	bl sub_80CC44C
-	lsls r0, 16
-	lsrs r0, 16
-	cmp r0, 0x1
-	bne _0813EECC
-	cmp r5, 0
-	bne _0813EEF2
-	cmp r4, 0
-	bne _0813EEF2
-	mov r1, r8
-	ldr r0, [r1, 0x10]
-	adds r0, r7, r0
-	ldr r1, [r0, 0x8]
-	mov r0, r9
-	bl sub_813EF40
-	b _0813EF2E
-	.align 2, 0
-_0813EEC8: .4byte gTasks
-_0813EECC:
-	lsls r0, r5, 16
-	asrs r1, r0, 16
-	movs r2, 0xE0
-	lsls r2, 11
-	adds r0, r2
-	lsrs r0, 16
-	cmp r0, 0xE
-	bhi _0813EEF2
-	lsls r0, r6, 16
-	asrs r2, r0, 16
-	movs r3, 0x5
-	negs r3, r3
-	cmp r2, r3
-	blt _0813EEF2
-	cmp r2, 0x5
-	bgt _0813EEF2
-	mov r0, r9
-	bl sub_813F220
-_0813EEF2:
-	movs r0, 0x80
-	lsls r0, 9
-	add r0, r10
-	lsrs r3, r0, 16
-	asrs r0, 16
-	mov r1, r8
-	ldrb r1, [r1, 0x3]
-	cmp r0, r1
-	blt _0813EE4E
-_0813EF04:
-	mov r0, r9
-	bl sub_813F108
-	ldr r0, _0813EF24 @ =gTasks
-	mov r2, r9
-	lsls r1, r2, 2
-	add r1, r9
-	lsls r1, 3
-	adds r1, r0
-	movs r3, 0xC
-	ldrsh r0, [r1, r3]
-	cmp r0, 0x1
-	beq _0813EF28
-	movs r0, 0
-	b _0813EF30
-	.align 2, 0
-_0813EF24: .4byte gTasks
-_0813EF28:
-	mov r0, r9
-	bl sub_813EF9C
-_0813EF2E:
-	movs r0, 0x1
-_0813EF30:
-	add sp, 0x4
-	pop {r3-r5}
-	mov r8, r3
-	mov r9, r4
-	mov r10, r5
-	pop {r4-r7}
-	pop {r1}
-	bx r1
-	thumb_func_end sub_813EE14
-
-	thumb_func_start sub_813EF40
-sub_813EF40: @ 813EF40
-	push {r4,r5,lr}
-	adds r5, r1, 0
-	lsls r0, 24
-	lsrs r0, 24
-	lsls r4, r0, 2
-	adds r4, r0
-	lsls r4, 3
-	ldr r0, _0813EF8C @ =gTasks+0x8
-	adds r4, r0
-	adds r0, r5, 0
-	movs r1, 0x1
-	bl sub_80CC44C
-	ldr r1, _0813EF90 @ =gSpecialVar_0x8004
-	strh r0, [r1]
-	adds r0, r5, 0
-	movs r1, 0
-	bl sub_80CC44C
-	ldr r1, _0813EF94 @ =gSpecialVar_0x8005
-	strh r0, [r1]
-	ldr r0, _0813EF98 @ =gSpecialVar_0x8006
-	movs r5, 0x1
-	strh r5, [r0]
-	ldrh r1, [r1]
-	movs r0, 0
-	bl TV_PrintIntToStringVar
-	strh r5, [r4, 0x4]
-	movs r0, 0
-	strh r0, [r4]
-	strh r0, [r4, 0x2]
-	movs r0, 0x3
-	strh r0, [r4, 0x8]
-	strh r5, [r4, 0xC]
-	pop {r4,r5}
-	pop {r0}
-	bx r0
-	.align 2, 0
-_0813EF8C: .4byte gTasks+0x8
-_0813EF90: .4byte gSpecialVar_0x8004
-_0813EF94: .4byte gSpecialVar_0x8005
-_0813EF98: .4byte gSpecialVar_0x8006
-	thumb_func_end sub_813EF40
-
-	thumb_func_start sub_813EF9C
-sub_813EF9C: @ 813EF9C
-	push {r4,lr}
-	lsls r0, 24
-	lsrs r0, 24
-	lsls r1, r0, 2
-	adds r1, r0
-	lsls r1, 3
-	ldr r0, _0813EFEC @ =gTasks+0x8
-	adds r1, r0
-	ldrh r3, [r1, 0x2]
-	ldrh r2, [r1]
-	movs r4, 0
-	ldrsh r0, [r1, r4]
-	cmp r0, 0
-	bne _0813EFBC
-	cmp r3, 0
-	beq _0813EFF8
-_0813EFBC:
-	movs r4, 0
-	ldrsh r0, [r1, r4]
-	cmp r0, 0
-	bge _0813EFCA
-	negs r0, r0
-	lsls r0, 16
-	lsrs r2, r0, 16
-_0813EFCA:
-	movs r4, 0x2
-	ldrsh r0, [r1, r4]
-	cmp r0, 0
-	bge _0813EFD8
-	negs r0, r0
-	lsls r0, 16
-	lsrs r3, r0, 16
-_0813EFD8:
-	lsls r0, r2, 16
-	asrs r2, r0, 16
-	lsls r0, r3, 16
-	asrs r0, 16
-	cmp r2, r0
-	ble _0813EFF0
-	cmp r2, 0x3
-	ble _0813EFF8
-	movs r0, 0x2
-	b _0813EFFA
-	.align 2, 0
-_0813EFEC: .4byte gTasks+0x8
-_0813EFF0:
-	cmp r0, 0x3
-	ble _0813EFF8
-	movs r0, 0x2
-	b _0813EFFA
-_0813EFF8:
-	movs r0, 0x4
-_0813EFFA:
-	strh r0, [r1, 0x8]
-	pop {r4}
-	pop {r0}
-	bx r0
-	thumb_func_end sub_813EF9C
-
-	thumb_func_start sub_813F004
-sub_813F004: @ 813F004
-	push {r4,r5,lr}
-	lsls r1, 16
-	lsrs r1, 16
-	lsls r2, 16
-	lsrs r2, 16
-	ldrb r5, [r0, 0x3]
-	ldr r4, [r0, 0x10]
-	movs r3, 0
-	cmp r3, r5
-	bge _0813F066
-	lsls r0, r1, 16
-	asrs r1, r0, 16
-	lsls r0, r2, 16
-	asrs r2, r0, 16
-_0813F020:
-	ldrb r0, [r4, 0x5]
-	cmp r0, 0x7
-	bne _0813F05E
-	ldrh r0, [r4]
-	cmp r1, r0
-	bne _0813F05E
-	ldrh r0, [r4, 0x2]
-	cmp r2, r0
-	bne _0813F05E
-	ldr r0, [r4, 0x8]
-	movs r1, 0x1
-	bl sub_80CC44C
-	lsls r0, 16
-	lsrs r5, r0, 16
-	ldr r0, [r4, 0x8]
-	movs r1, 0x3
-	bl sub_80CC44C
-	lsls r0, 16
-	lsrs r0, 16
-	cmp r0, 0x1
-	beq _0813F066
-	adds r0, r5, 0
-	bl FlagGet
-	lsls r0, 24
-	cmp r0, 0
-	bne _0813F066
-	movs r0, 0x1
-	b _0813F068
-_0813F05E:
-	adds r4, 0xC
-	adds r3, 0x1
-	cmp r3, r5
-	blt _0813F020
-_0813F066:
-	movs r0, 0
-_0813F068:
-	pop {r4,r5}
-	pop {r1}
-	bx r1
-	thumb_func_end sub_813F004
-
 	thumb_func_start sub_813F070
 sub_813F070: @ 813F070
 	push {r4-r6,lr}
@@ -950,14 +437,14 @@ sub_813F364: @ 813F364
 	push {lr}
 	lsls r0, 24
 	lsrs r0, 24
-	ldr r2, _0813F378 @ =gUnknown_8416476
+	ldr r2, _0813F378 @ =gText_ItemfinderResponding
 	ldr r3, _0813F37C @ =sub_813F380
 	movs r1, 0x2
 	bl DisplayItemMessageOnField
 	pop {r0}
 	bx r0
 	.align 2, 0
-_0813F378: .4byte gUnknown_8416476
+_0813F378: .4byte gText_ItemfinderResponding
 _0813F37C: .4byte sub_813F380
 	thumb_func_end sub_813F364
 
@@ -985,14 +472,14 @@ sub_813F3A8: @ 813F3A8
 	push {lr}
 	lsls r0, 24
 	lsrs r0, 24
-	ldr r2, _0813F3BC @ =gUnknown_84164BE
+	ldr r2, _0813F3BC @ =gText_ItemfinderShakingWildly
 	ldr r3, _0813F3C0 @ =sub_813F3C4
 	movs r1, 0x2
 	bl DisplayItemMessageOnField
 	pop {r0}
 	bx r0
 	.align 2, 0
-_0813F3BC: .4byte gUnknown_84164BE
+_0813F3BC: .4byte gText_ItemfinderShakingWildly
 _0813F3C0: .4byte sub_813F3C4
 	thumb_func_end sub_813F3A8
 

data/strings.s

@@ -582,13 +582,13 @@ gUnknown_8416425:: @ 8416425
 gUnknown_8416451:: @ 8416451
 	.string "You can't dismount your BIKE here.{PAUSE_UNTIL_PRESS}$"
 
-gUnknown_8416476:: @ 8416476
+gText_ItemfinderResponding:: @ 8416476
 	.string "Huh?\nThe ITEMFINDER's responding!\pThere's an item buried around here!{PAUSE_UNTIL_PRESS}$"
 
-gUnknown_84164BE:: @ 84164BE
+gText_ItemfinderShakingWildly:: @ 84164BE
 	.string "Oh!\nThe ITEMFINDER's shaking wildly!\pThere's an item buried underfoot!\p‥ ‥ ‥ ‥ ‥ ‥{PAUSE_UNTIL_PRESS}$"
 
-gUnknown_8416513:: @ 8416513
+gText_NopeTheresNoResponse:: @ 8416513
 	.string "‥ ‥ ‥ ‥Nope!\nThere's no response.{PAUSE_UNTIL_PRESS}$"
 
 gUnknown_8416537:: @ 8416537

include/field_specials.h

@@ -14,5 +14,6 @@ u8 ContextNpcGetTextColor(void);
 void set_unknown_box_id(u8);
 u16 get_unknown_box_id(void);
 bool8 sub_80CC7B4(void);
+u16 sub_80CC44C(struct HiddenItemStruct hiddenItem, u8 attr);
 
 #endif // GUARD_FIELD_SPECIALS_H

include/global.fieldmap.h

@@ -120,26 +120,34 @@ struct CoordEvent
     u8 *script;
 };
 
+struct HiddenItemStruct
+{
+    u32 field_00:16;
+    u32 hiddenItemId:8; // flag offset to determine flag lookup
+    u32 field_03_0:7;
+    u32 field_03_7:1;
+};
+
+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
+    union BgUnion bgUnion;
-        // 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;
 };
 
 struct MapEvents

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

ld_script.txt

@@ -252,6 +252,7 @@ SECTIONS {
         asm/wild_pokemon_area.o(.text);
         src/dynamic_placeholder_text_util.o(.text);
         src/berry_pouch.o(.text);
+        src/itemfinder.o(.text);
         asm/itemfinder.o(.text);
         src/buy_menu_helpers.o(.text);
         src/slot_machine.o(.text);
@@ -467,6 +468,7 @@ SECTIONS {
         data/wild_pokemon_area.o(.rodata);
         src/dynamic_placeholder_text_util.o(.rodata);
         src/berry_pouch.o(.rodata);
+        src/itemfinder.o(.rodata);
         data/itemfinder.o(.rodata);
         src/buy_menu_helpers.o(.rodata);
         src/slot_machine.o(.rodata);

src/itemfinder.c

@@ -0,0 +1,204 @@
+#include "global.h"
+#include "task.h"
+#include "new_menu_helpers.h"
+#include "strings.h"
+#include "map_obj_lock.h"
+#include "script.h"
+#include "sound.h"
+#include "event_data.h"
+#include "field_player_avatar.h"
+#include "field_specials.h"
+#include "constants/songs.h"
+
+void sub_813ED18(u8 taskId);
+void sub_813ED3C(u8 taskId);
+void sub_813EDB0(u8 taskId);
+bool8 sub_813EE14(struct MapEvents *events, u8 taskId);
+void sub_813EF9C(u8 taskId);
+void sub_813F108(u8 taskId);
+void sub_813F220(u8 taskId, s16 dx, s16 dy);
+u8 GetPlayerDirectionTowardsHiddenItem(s16 x, s16 y);
+void sub_813F364(u8 taskId);
+void sub_813F3A8(u8 taskId);
+void sub_813F3EC(void);
+void sub_813F40C(u8 palIdx, u8 direction);
+u8 sub_813F5AC(void);
+void sub_813EF40(u8 taskId, struct HiddenItemStruct hiddenItem);
+
+void sub_813EC8C(u8 taskId)
+{
+    u8 i;
+    for (i = 0; i < 16; i++)
+        gTasks[taskId].data[i] = 0;
+    if (sub_813EE14(gMapHeader.events, taskId) == TRUE)
+    {
+        sub_813F3EC();
+        if (gTasks[taskId].data[6] == 1)
+            gTasks[taskId].func = sub_813EDB0;
+        else
+            gTasks[taskId].func = sub_813ED3C;
+    }
+    else
+    {
+        DisplayItemMessageOnField(taskId, 2, gText_NopeTheresNoResponse, sub_813ED18);
+    }
+}
+
+void sub_813ED18(u8 taskId)
+{
+    ClearDialogWindowAndFrame(0, TRUE);
+    sub_80696C0();
+    ScriptContext2_Disable();
+    DestroyTask(taskId);
+}
+
+void sub_813ED3C(u8 taskId)
+{
+    s16 * data = gTasks[taskId].data;
+    u8 direction;
+    if (data[3] % 25 == 0)
+    {
+        direction = GetPlayerDirectionTowardsHiddenItem(data[0], data[1]);
+        if (data[4] == 0)
+        {
+            gTasks[taskId].func = sub_813F364;
+            return;
+        }
+        else
+        {
+            PlaySE(SE_TOY_F);
+            sub_813F40C(data[5], direction);
+            data[5]++;
+            data[4]--;
+        }
+    }
+    data[3]++;
+}
+
+void sub_813EDB0(u8 taskId)
+{
+    s16 * data = gTasks[taskId].data;
+    if (data[3] % 25 == 0)
+    {
+        if (data[4] == 0)
+        {
+            gTasks[taskId].func = sub_813F3A8;
+            return;
+        }
+        else
+        {
+            PlaySE(SE_TOY_F);
+            data[7] = sub_813F5AC();
+            data[5]++;
+            data[4]--;
+        }
+    }
+    data[3]++;
+}
+
+bool8 sub_813EE14(struct MapEvents *events, u8 taskId)
+{
+    s16 x, y, i, dx, dy;
+    PlayerGetDestCoords(&x, &y);
+    gTasks[taskId].data[2] = 0;
+    for (i = 0; i < events->bgEventCount; i++)
+    {
+        if (events->bgEvents[i].kind == 7 && !FlagGet(sub_80CC44C(events->bgEvents[i].bgUnion.hiddenItem, 1)))
+        {
+            dx = events->bgEvents[i].x + 7 - x;
+            dy = events->bgEvents[i].y + 7 - y;
+            if (sub_80CC44C(events->bgEvents[i].bgUnion.hiddenItem, 3) == TRUE)
+            {
+                if (dx == 0 && dy == 0)
+                {
+                    sub_813EF40(taskId, events->bgEvents[i].bgUnion.hiddenItem);
+                    return TRUE;
+                }
+            }
+            else if (
+                dx >= -7
+             && dx <=  7
+             && dy >= -5
+             && dy <=  5
+            )
+            {
+                sub_813F220(taskId, dx, dy);
+            }
+        }
+    }
+    sub_813F108(taskId);
+    if (gTasks[taskId].data[2] == 1)
+    {
+        sub_813EF9C(taskId);
+        return TRUE;
+    }
+    return FALSE;
+}
+
+void sub_813EF40(u8 taskId, struct HiddenItemStruct hiddenItem)
+{
+    s16 * data = gTasks[taskId].data;
+    gSpecialVar_0x8004 = sub_80CC44C(hiddenItem, 1);
+    gSpecialVar_0x8005 = sub_80CC44C(hiddenItem, 0);
+    gSpecialVar_0x8006 = 1;
+    TV_PrintIntToStringVar(0, gSpecialVar_0x8005);
+    data[2] = 1;
+    data[0] = 0;
+    data[1] = 0;
+    data[4] = 3;
+    data[6] = 1;
+}
+
+void sub_813EF9C(u8 taskId)
+{
+    s16 * data = gTasks[taskId].data;
+    s16 r3 = data[1];
+    s16 r2 = data[0];
+    if (data[0] == 0 && data[1] == 0)
+        data[4] = 4;
+    else
+    {
+        if (data[0] < 0)
+            r2 = data[0] * -1;
+        if (data[1] < 0)
+            r3 = data[1] * -1;
+        if (r2 > r3)
+        {
+            if (r2 > 3)
+                data[4] = 2;
+            else
+                data[4] = 4;
+        }
+        else
+        {
+            if (r3 > 3)
+                data[4] = 2;
+            else
+                data[4] = 4;
+        }
+    }
+}
+
+bool8 sub_813F004(struct MapEvents *events, s16 x, s16 y)
+{
+    s32 i;
+    u16 eventFlag;
+    s32 bgEventCount = events->bgEventCount;
+    struct BgEvent *bgEvents = events->bgEvents;
+    for (i = 0; i < bgEventCount; i++)
+    {
+        if (
+            bgEvents[i].kind == 7
+         && x == bgEvents[i].x
+         && y == bgEvents[i].y
+        )
+        {
+            eventFlag = sub_80CC44C(bgEvents[i].bgUnion.hiddenItem, 1);
+            if (sub_80CC44C(bgEvents[i].bgUnion.hiddenItem, 3) != TRUE && !FlagGet(eventFlag))
+                return TRUE;
+            else
+                return FALSE;
+        }
+    }
+    return FALSE;
+}