Finish item_use

26 files changed, 709 insertions, 1619 deletions

diff --git a/asm/berry_crush.s b/asm/berry_crush.s
index eb5e8d08d..42de36a1f 100644
--- a/asm/berry_crush.s
+++ b/asm/berry_crush.s
@@ -265,7 +265,7 @@ sub_814B8F0: @ 814B8F0
 	ldr r1, _0814B910 @ =sub_814B860
 	movs r0, 0x5
 	movs r2, 0
-	bl sub_813CD50
+	bl InitBerryPouch
 	pop {r0}
 	bx r0
 	.align 2, 0
diff --git a/asm/berry_pouch.s b/asm/berry_pouch.s
index 08d4ab435..36fa22f9c 100644
--- a/asm/berry_pouch.s
+++ b/asm/berry_pouch.s
@@ -5,8 +5,8 @@
 
 	.text
 
-	thumb_func_start sub_813CD50
-sub_813CD50: @ 813CD50
+	thumb_func_start InitBerryPouch
+InitBerryPouch: @ 813CD50
 	push {r4-r7,lr}
 	mov r7, r8
 	push {r7}
@@ -92,7 +92,7 @@ _0813CDF0: .4byte gTextFlags
 _0813CDF4: .4byte gSpecialVar_ItemId
 _0813CDF8: .4byte sub_813CE30
 _0813CDFC: .4byte 0x0000080c
-	thumb_func_end sub_813CD50
+	thumb_func_end InitBerryPouch
 
 	thumb_func_start sub_813CE00
 sub_813CE00: @ 813CE00
diff --git a/asm/item_menu.s b/asm/item_menu.s
index 1db1f73b8..42378c28e 100644
--- a/asm/item_menu.s
+++ b/asm/item_menu.s
@@ -138,8 +138,8 @@ _08107EB0: .4byte gUnknown_203AD10
 _08107EB4: .4byte gUnknown_203ACFC
 	thumb_func_end sub_8107DB4
 
-	thumb_func_start UseFameCheckerFromMenu
-UseFameCheckerFromMenu: @ 8107EB8
+	thumb_func_start ReturnToBagFromKeyItem
+ReturnToBagFromKeyItem: @ 8107EB8
 	push {lr}
 	ldr r2, _08107EC8 @ =sub_80568A8
 	movs r0, 0
@@ -149,7 +149,7 @@ UseFameCheckerFromMenu: @ 8107EB8
 	bx r0
 	.align 2, 0
 _08107EC8: .4byte sub_80568A8
-	thumb_func_end UseFameCheckerFromMenu
+	thumb_func_end ReturnToBagFromKeyItem
 
 	thumb_func_start sub_8107ECC
 sub_8107ECC: @ 8107ECC
@@ -4776,7 +4776,7 @@ sub_810A448: @ 810A448
 	ldr r1, _0810A458 @ =sub_810A45C
 	movs r0, 0x1
 	movs r2, 0
-	bl sub_813CD50
+	bl InitBerryPouch
 	pop {r0}
 	bx r0
 	.align 2, 0
@@ -4905,7 +4905,7 @@ sub_810A540: @ 810A540
 	ldr r1, _0810A550 @ =sub_810A554
 	movs r0, 0x3
 	movs r2, 0
-	bl sub_813CD50
+	bl InitBerryPouch
 	pop {r0}
 	bx r0
 	.align 2, 0
@@ -5050,7 +5050,7 @@ sub_810A668: @ 810A668
 	ldr r1, _0810A678 @ =sub_810A67C
 	movs r0, 0x2
 	movs r2, 0
-	bl sub_813CD50
+	bl InitBerryPouch
 	pop {r0}
 	bx r0
 	.align 2, 0
diff --git a/asm/item_use.s b/asm/item_use.s
deleted file mode 100644
index e6b649da8..000000000
--- a/asm/item_use.s
+++ /dev/null
@@ -1,1506 +0,0 @@
-	.include "asm/macros.inc"
-	.include "constants/constants.inc"
-
-	.syntax unified
-
-	.text
-
-	thumb_func_start FieldUseFunc_OpenPartyMenu
-FieldUseFunc_OpenPartyMenu: @ 80A16E0
-	push {lr}
-	lsls r0, 24
-	lsrs r0, 24
-	ldr r2, _080A16F4 @ =gUnknown_3005E98
-	ldr r1, _080A16F8 @ =sub_81252D0
-	str r1, [r2]
-	bl sub_80A16D0
-	pop {r0}
-	bx r0
-	.align 2, 0
-_080A16F4: .4byte gUnknown_3005E98
-_080A16F8: .4byte sub_81252D0
-	thumb_func_end FieldUseFunc_OpenPartyMenu
-
-	thumb_func_start FieldUseFunc_Ether
-FieldUseFunc_Ether: @ 80A16FC
-	push {lr}
-	lsls r0, 24
-	lsrs r0, 24
-	ldr r2, _080A1710 @ =gUnknown_3005E98
-	ldr r1, _080A1714 @ =sub_81256F8
-	str r1, [r2]
-	bl sub_80A16D0
-	pop {r0}
-	bx r0
-	.align 2, 0
-_080A1710: .4byte gUnknown_3005E98
-_080A1714: .4byte sub_81256F8
-	thumb_func_end FieldUseFunc_Ether
-
-	thumb_func_start FieldUseFunc_PpUp
-FieldUseFunc_PpUp: @ 80A1718
-	push {lr}
-	lsls r0, 24
-	lsrs r0, 24
-	ldr r2, _080A172C @ =gUnknown_3005E98
-	ldr r1, _080A1730 @ =dp05_pp_up
-	str r1, [r2]
-	bl sub_80A16D0
-	pop {r0}
-	bx r0
-	.align 2, 0
-_080A172C: .4byte gUnknown_3005E98
-_080A1730: .4byte dp05_pp_up
-	thumb_func_end FieldUseFunc_PpUp
-
-	thumb_func_start FieldUseFunc_RareCandy
-FieldUseFunc_RareCandy: @ 80A1734
-	push {lr}
-	lsls r0, 24
-	lsrs r0, 24
-	ldr r2, _080A1748 @ =gUnknown_3005E98
-	ldr r1, _080A174C @ =dp05_rare_candy
-	str r1, [r2]
-	bl sub_80A16D0
-	pop {r0}
-	bx r0
-	.align 2, 0
-_080A1748: .4byte gUnknown_3005E98
-_080A174C: .4byte dp05_rare_candy
-	thumb_func_end FieldUseFunc_RareCandy
-
-	thumb_func_start FieldUseFunc_EvoItem
-FieldUseFunc_EvoItem: @ 80A1750
-	push {lr}
-	lsls r0, 24
-	lsrs r0, 24
-	ldr r2, _080A1764 @ =gUnknown_3005E98
-	ldr r1, _080A1768 @ =sub_8126B60
-	str r1, [r2]
-	bl sub_80A16D0
-	pop {r0}
-	bx r0
-	.align 2, 0
-_080A1764: .4byte gUnknown_3005E98
-_080A1768: .4byte sub_8126B60
-	thumb_func_end FieldUseFunc_EvoItem
-
-	thumb_func_start FieldUseFunc_SacredAsh
-FieldUseFunc_SacredAsh: @ 80A176C
-	push {lr}
-	lsls r0, 24
-	lsrs r0, 24
-	ldr r2, _080A1780 @ =gUnknown_3005E98
-	ldr r1, _080A1784 @ =sub_8126894
-	str r1, [r2]
-	bl sub_80A0FBC
-	pop {r0}
-	bx r0
-	.align 2, 0
-_080A1780: .4byte gUnknown_3005E98
-_080A1784: .4byte sub_8126894
-	thumb_func_end FieldUseFunc_SacredAsh
-
-	thumb_func_start FieldUseFunc_TmCase
-FieldUseFunc_TmCase: @ 80A1788
-	push {r4,r5,lr}
-	lsls r0, 24
-	lsrs r4, r0, 24
-	ldr r1, _080A17B0 @ =gTasks
-	lsls r0, r4, 2
-	adds r0, r4
-	lsls r0, 3
-	adds r5, r0, r1
-	movs r1, 0xE
-	ldrsh r0, [r5, r1]
-	cmp r0, 0
-	bne _080A17B8
-	ldr r0, _080A17B4 @ =sub_80A17D4
-	bl sub_8108EE0
-	adds r0, r4, 0
-	bl sub_8108B50
-	b _080A17C8
-	.align 2, 0
-_080A17B0: .4byte gTasks
-_080A17B4: .4byte sub_80A17D4
-_080A17B8:
-	bl sub_80CCB68
-	movs r0, 0x1
-	movs r1, 0
-	bl fade_screen
-	ldr r0, _080A17D0 @ =sub_80A17E8
-	str r0, [r5]
-_080A17C8:
-	pop {r4,r5}
-	pop {r0}
-	bx r0
-	.align 2, 0
-_080A17D0: .4byte sub_80A17E8
-	thumb_func_end FieldUseFunc_TmCase
-
-	thumb_func_start sub_80A17D4
-sub_80A17D4: @ 80A17D4
-	push {lr}
-	ldr r1, _080A17E4 @ =UseFameCheckerFromMenu
-	movs r0, 0
-	movs r2, 0
-	bl InitTMCase
-	pop {r0}
-	bx r0
-	.align 2, 0
-_080A17E4: .4byte UseFameCheckerFromMenu
-	thumb_func_end sub_80A17D4
-
-	thumb_func_start sub_80A17E8
-sub_80A17E8: @ 80A17E8
-	push {r4,lr}
-	lsls r0, 24
-	lsrs r4, r0, 24
-	ldr r0, _080A1818 @ =gPaletteFade
-	ldrb r1, [r0, 0x7]
-	movs r0, 0x80
-	ands r0, r1
-	cmp r0, 0
-	bne _080A1812
-	bl CleanupOverworldWindowsAndTilemaps
-	bl sub_80A1184
-	ldr r1, _080A181C @ =CB2_ReturnToField
-	movs r0, 0
-	movs r2, 0x1
-	bl InitTMCase
-	adds r0, r4, 0
-	bl DestroyTask
-_080A1812:
-	pop {r4}
-	pop {r0}
-	bx r0
-	.align 2, 0
-_080A1818: .4byte gPaletteFade
-_080A181C: .4byte CB2_ReturnToField
-	thumb_func_end sub_80A17E8
-
-	thumb_func_start FieldUseFunc_BerryPouch
-FieldUseFunc_BerryPouch: @ 80A1820
-	push {r4,r5,lr}
-	lsls r0, 24
-	lsrs r4, r0, 24
-	ldr r1, _080A1848 @ =gTasks
-	lsls r0, r4, 2
-	adds r0, r4
-	lsls r0, 3
-	adds r5, r0, r1
-	movs r1, 0xE
-	ldrsh r0, [r5, r1]
-	cmp r0, 0
-	bne _080A1850
-	ldr r0, _080A184C @ =sub_80A186C
-	bl sub_8108EE0
-	adds r0, r4, 0
-	bl sub_8108B50
-	b _080A1860
-	.align 2, 0
-_080A1848: .4byte gTasks
-_080A184C: .4byte sub_80A186C
-_080A1850:
-	bl sub_80CCB68
-	movs r0, 0x1
-	movs r1, 0
-	bl fade_screen
-	ldr r0, _080A1868 @ =sub_80A1880
-	str r0, [r5]
-_080A1860:
-	pop {r4,r5}
-	pop {r0}
-	bx r0
-	.align 2, 0
-_080A1868: .4byte sub_80A1880
-	thumb_func_end FieldUseFunc_BerryPouch
-
-	thumb_func_start sub_80A186C
-sub_80A186C: @ 80A186C
-	push {lr}
-	ldr r1, _080A187C @ =UseFameCheckerFromMenu
-	movs r0, 0
-	movs r2, 0
-	bl sub_813CD50
-	pop {r0}
-	bx r0
-	.align 2, 0
-_080A187C: .4byte UseFameCheckerFromMenu
-	thumb_func_end sub_80A186C
-
-	thumb_func_start sub_80A1880
-sub_80A1880: @ 80A1880
-	push {r4,lr}
-	lsls r0, 24
-	lsrs r4, r0, 24
-	ldr r0, _080A18B0 @ =gPaletteFade
-	ldrb r1, [r0, 0x7]
-	movs r0, 0x80
-	ands r0, r1
-	cmp r0, 0
-	bne _080A18AA
-	bl CleanupOverworldWindowsAndTilemaps
-	bl sub_80A1184
-	ldr r1, _080A18B4 @ =CB2_ReturnToField
-	movs r0, 0
-	movs r2, 0x1
-	bl sub_813CD50
-	adds r0, r4, 0
-	bl DestroyTask
-_080A18AA:
-	pop {r4}
-	pop {r0}
-	bx r0
-	.align 2, 0
-_080A18B0: .4byte gPaletteFade
-_080A18B4: .4byte CB2_ReturnToField
-	thumb_func_end sub_80A1880
-
-	thumb_func_start BattleUseFunc_BerryPouch
-BattleUseFunc_BerryPouch: @ 80A18B8
-	push {r4,lr}
-	adds r4, r0, 0
-	lsls r4, 24
-	lsrs r4, 24
-	ldr r0, _080A18D4 @ =sub_80A18D8
-	bl sub_8108EE0
-	adds r0, r4, 0
-	bl sub_8108B50
-	pop {r4}
-	pop {r0}
-	bx r0
-	.align 2, 0
-_080A18D4: .4byte sub_80A18D8
-	thumb_func_end BattleUseFunc_BerryPouch
-
-	thumb_func_start sub_80A18D8
-sub_80A18D8: @ 80A18D8
-	push {lr}
-	ldr r1, _080A18E8 @ =sub_8107ECC
-	movs r0, 0x4
-	movs r2, 0
-	bl sub_813CD50
-	pop {r0}
-	bx r0
-	.align 2, 0
-_080A18E8: .4byte sub_8107ECC
-	thumb_func_end sub_80A18D8
-
-	thumb_func_start FieldUseFunc_TeachyTv
-FieldUseFunc_TeachyTv: @ 80A18EC
-	push {r4,r5,lr}
-	lsls r0, 24
-	lsrs r4, r0, 24
-	ldr r0, _080A1920 @ =gSpecialVar_ItemId
-	ldrh r2, [r0]
-	ldr r3, _080A1924 @ =0x0000ffff
-	movs r0, 0x4
-	movs r1, 0
-	bl ItemUse_SetQuestLogEvent
-	ldr r1, _080A1928 @ =gTasks
-	lsls r0, r4, 2
-	adds r0, r4
-	lsls r0, 3
-	adds r5, r0, r1
-	movs r1, 0xE
-	ldrsh r0, [r5, r1]
-	cmp r0, 0
-	bne _080A1930
-	ldr r0, _080A192C @ =sub_80A194C
-	bl sub_8108EE0
-	adds r0, r4, 0
-	bl sub_8108B50
-	b _080A1940
-	.align 2, 0
-_080A1920: .4byte gSpecialVar_ItemId
-_080A1924: .4byte 0x0000ffff
-_080A1928: .4byte gTasks
-_080A192C: .4byte sub_80A194C
-_080A1930:
-	bl sub_80CCB68
-	movs r0, 0x1
-	movs r1, 0
-	bl fade_screen
-	ldr r0, _080A1948 @ =sub_80A1960
-	str r0, [r5]
-_080A1940:
-	pop {r4,r5}
-	pop {r0}
-	bx r0
-	.align 2, 0
-_080A1948: .4byte sub_80A1960
-	thumb_func_end FieldUseFunc_TeachyTv
-
-	thumb_func_start sub_80A194C
-sub_80A194C: @ 80A194C
-	push {lr}
-	ldr r1, _080A195C @ =UseFameCheckerFromMenu
-	movs r0, 0
-	bl InitTeachyTvController
-	pop {r0}
-	bx r0
-	.align 2, 0
-_080A195C: .4byte UseFameCheckerFromMenu
-	thumb_func_end sub_80A194C
-
-	thumb_func_start sub_80A1960
-sub_80A1960: @ 80A1960
-	push {r4,lr}
-	lsls r0, 24
-	lsrs r4, r0, 24
-	ldr r0, _080A1990 @ =gPaletteFade
-	ldrb r1, [r0, 0x7]
-	movs r0, 0x80
-	ands r0, r1
-	cmp r0, 0
-	bne _080A1988
-	bl CleanupOverworldWindowsAndTilemaps
-	bl sub_80A1184
-	ldr r1, _080A1994 @ =CB2_ReturnToField
-	movs r0, 0
-	bl InitTeachyTvController
-	adds r0, r4, 0
-	bl DestroyTask
-_080A1988:
-	pop {r4}
-	pop {r0}
-	bx r0
-	.align 2, 0
-_080A1990: .4byte gPaletteFade
-_080A1994: .4byte CB2_ReturnToField
-	thumb_func_end sub_80A1960
-
-	thumb_func_start FieldUseFunc_SuperRepel
-FieldUseFunc_SuperRepel: @ 80A1998
-	push {r4,lr}
-	lsls r0, 24
-	lsrs r4, r0, 24
-	ldr r0, _080A19C0 @ =0x00004020
-	bl VarGet
-	lsls r0, 16
-	cmp r0, 0
-	bne _080A19CC
-	movs r0, 0x29
-	bl PlaySE
-	ldr r0, _080A19C4 @ =gTasks
-	lsls r1, r4, 2
-	adds r1, r4
-	lsls r1, 3
-	adds r1, r0
-	ldr r0, _080A19C8 @ =sub_80A19E8
-	str r0, [r1]
-	b _080A19D8
-	.align 2, 0
-_080A19C0: .4byte 0x00004020
-_080A19C4: .4byte gTasks
-_080A19C8: .4byte sub_80A19E8
-_080A19CC:
-	ldr r2, _080A19E0 @ =gUnknown_841659E
-	ldr r3, _080A19E4 @ =sub_810A1F8
-	adds r0, r4, 0
-	movs r1, 0x2
-	bl DisplayItemMessageInBag
-_080A19D8:
-	pop {r4}
-	pop {r0}
-	bx r0
-	.align 2, 0
-_080A19E0: .4byte gUnknown_841659E
-_080A19E4: .4byte sub_810A1F8
-	thumb_func_end FieldUseFunc_SuperRepel
-
-	thumb_func_start sub_80A19E8
-sub_80A19E8: @ 80A19E8
-	push {r4-r6,lr}
-	lsls r0, 24
-	lsrs r6, r0, 24
-	bl IsSEPlaying
-	lsls r0, 24
-	cmp r0, 0
-	bne _080A1A2A
-	ldr r4, _080A1A30 @ =gSpecialVar_ItemId
-	ldrh r2, [r4]
-	ldr r3, _080A1A34 @ =0x0000ffff
-	movs r0, 0x4
-	movs r1, 0
-	bl ItemUse_SetQuestLogEvent
-	ldr r5, _080A1A38 @ =0x00004020
-	ldrh r0, [r4]
-	bl ItemId_GetHoldEffectParam
-	adds r1, r0, 0
-	lsls r1, 24
-	lsrs r1, 24
-	adds r0, r5, 0
-	bl VarSet
-	bl sub_80A1A44
-	ldr r2, _080A1A3C @ =gStringVar4
-	ldr r3, _080A1A40 @ =sub_810A1F8
-	adds r0, r6, 0
-	movs r1, 0x2
-	bl DisplayItemMessageInBag
-_080A1A2A:
-	pop {r4-r6}
-	pop {r0}
-	bx r0
-	.align 2, 0
-_080A1A30: .4byte gSpecialVar_ItemId
-_080A1A34: .4byte 0x0000ffff
-_080A1A38: .4byte 0x00004020
-_080A1A3C: .4byte gStringVar4
-_080A1A40: .4byte sub_810A1F8
-	thumb_func_end sub_80A19E8
-
-	thumb_func_start sub_80A1A44
-sub_80A1A44: @ 80A1A44
-	push {r4,lr}
-	ldr r4, _080A1A84 @ =gSpecialVar_ItemId
-	ldrh r0, [r4]
-	movs r1, 0x1
-	bl RemoveBagItem
-	ldrh r0, [r4]
-	bl ItemId_GetPocket
-	lsls r0, 24
-	lsrs r0, 24
-	bl sub_8108DC8
-	ldrh r0, [r4]
-	bl ItemId_GetPocket
-	lsls r0, 24
-	lsrs r0, 24
-	bl sub_81089F4
-	ldrh r0, [r4]
-	ldr r1, _080A1A88 @ =gStringVar2
-	bl CopyItemName
-	ldr r0, _080A1A8C @ =gStringVar4
-	ldr r1, _080A1A90 @ =gUnknown_841658C
-	bl StringExpandPlaceholders
-	pop {r4}
-	pop {r0}
-	bx r0
-	.align 2, 0
-_080A1A84: .4byte gSpecialVar_ItemId
-_080A1A88: .4byte gStringVar2
-_080A1A8C: .4byte gStringVar4
-_080A1A90: .4byte gUnknown_841658C
-	thumb_func_end sub_80A1A44
-
-	thumb_func_start FieldUseFunc_BlackFlute
-FieldUseFunc_BlackFlute: @ 80A1A94
-	push {r4-r6,lr}
-	lsls r0, 24
-	lsrs r4, r0, 24
-	adds r6, r4, 0
-	ldr r5, _080A1AD4 @ =gSpecialVar_ItemId
-	ldrh r2, [r5]
-	ldr r3, _080A1AD8 @ =0x0000ffff
-	movs r0, 0x4
-	movs r1, 0
-	bl ItemUse_SetQuestLogEvent
-	ldrh r0, [r5]
-	cmp r0, 0x2B
-	bne _080A1AF4
-	ldr r0, _080A1ADC @ =0x00000803
-	bl FlagSet
-	ldr r0, _080A1AE0 @ =0x00000804
-	bl FlagClear
-	ldrh r0, [r5]
-	ldr r1, _080A1AE4 @ =gStringVar2
-	bl CopyItemName
-	ldr r0, _080A1AE8 @ =gStringVar4
-	ldr r1, _080A1AEC @ =gUnknown_84165D2
-	bl StringExpandPlaceholders
-	ldr r1, _080A1AF0 @ =gTasks
-	lsls r0, r4, 2
-	adds r0, r4
-	b _080A1B1A
-	.align 2, 0
-_080A1AD4: .4byte gSpecialVar_ItemId
-_080A1AD8: .4byte 0x0000ffff
-_080A1ADC: .4byte 0x00000803
-_080A1AE0: .4byte 0x00000804
-_080A1AE4: .4byte gStringVar2
-_080A1AE8: .4byte gStringVar4
-_080A1AEC: .4byte gUnknown_84165D2
-_080A1AF0: .4byte gTasks
-_080A1AF4:
-	cmp r0, 0x2A
-	bne _080A1B26
-	ldr r0, _080A1B2C @ =0x00000804
-	bl FlagSet
-	ldr r0, _080A1B30 @ =0x00000803
-	bl FlagClear
-	ldrh r0, [r5]
-	ldr r1, _080A1B34 @ =gStringVar2
-	bl CopyItemName
-	ldr r0, _080A1B38 @ =gStringVar4
-	ldr r1, _080A1B3C @ =gUnknown_8416600
-	bl StringExpandPlaceholders
-	ldr r1, _080A1B40 @ =gTasks
-	lsls r0, r6, 2
-	adds r0, r6
-_080A1B1A:
-	lsls r0, 3
-	adds r0, r1
-	ldr r1, _080A1B44 @ =sub_80A1B48
-	str r1, [r0]
-	movs r1, 0
-	strh r1, [r0, 0x18]
-_080A1B26:
-	pop {r4-r6}
-	pop {r0}
-	bx r0
-	.align 2, 0
-_080A1B2C: .4byte 0x00000804
-_080A1B30: .4byte 0x00000803
-_080A1B34: .4byte gStringVar2
-_080A1B38: .4byte gStringVar4
-_080A1B3C: .4byte gUnknown_8416600
-_080A1B40: .4byte gTasks
-_080A1B44: .4byte sub_80A1B48
-	thumb_func_end FieldUseFunc_BlackFlute
-
-	thumb_func_start sub_80A1B48
-sub_80A1B48: @ 80A1B48
-	push {r4,lr}
-	lsls r0, 24
-	lsrs r4, r0, 24
-	ldr r0, _080A1B80 @ =gTasks
-	lsls r1, r4, 2
-	adds r1, r4
-	lsls r1, 3
-	adds r1, r0
-	ldrh r0, [r1, 0x18]
-	adds r0, 0x1
-	strh r0, [r1, 0x18]
-	lsls r0, 16
-	asrs r0, 16
-	cmp r0, 0x7
-	ble _080A1B78
-	movs r0, 0x6E
-	bl PlaySE
-	ldr r2, _080A1B84 @ =gStringVar4
-	ldr r3, _080A1B88 @ =sub_810A1F8
-	adds r0, r4, 0
-	movs r1, 0x2
-	bl DisplayItemMessageInBag
-_080A1B78:
-	pop {r4}
-	pop {r0}
-	bx r0
-	.align 2, 0
-_080A1B80: .4byte gTasks
-_080A1B84: .4byte gStringVar4
-_080A1B88: .4byte sub_810A1F8
-	thumb_func_end sub_80A1B48
-
-	thumb_func_start sub_80A1B8C
-sub_80A1B8C: @ 80A1B8C
-	push {lr}
-	ldr r0, _080A1BA0 @ =gMapHeader
-	ldrb r1, [r0, 0x19]
-	movs r0, 0x1
-	ands r0, r1
-	cmp r0, 0
-	bne _080A1BA4
-	movs r0, 0
-	b _080A1BA6
-	.align 2, 0
-_080A1BA0: .4byte gMapHeader
-_080A1BA4:
-	movs r0, 0x1
-_080A1BA6:
-	pop {r1}
-	bx r1
-	thumb_func_end sub_80A1B8C
-
-	thumb_func_start ItemUseOutOfBattle_EscapeRope
-ItemUseOutOfBattle_EscapeRope: @ 80A1BAC
-	push {r4,lr}
-	lsls r0, 24
-	lsrs r4, r0, 24
-	bl sub_80A1B8C
-	lsls r0, 24
-	lsrs r0, 24
-	cmp r0, 0x1
-	bne _080A1BEC
-	ldr r0, _080A1BDC @ =gSpecialVar_ItemId
-	ldrh r2, [r0]
-	ldr r0, _080A1BE0 @ =gMapHeader
-	ldrb r3, [r0, 0x14]
-	movs r0, 0x4
-	movs r1, 0
-	bl ItemUse_SetQuestLogEvent
-	ldr r1, _080A1BE4 @ =sItemUseOnFieldCB
-	ldr r0, _080A1BE8 @ =sub_80A1C08
-	str r0, [r1]
-	adds r0, r4, 0
-	bl sub_80A103C
-	b _080A1BFE
-	.align 2, 0
-_080A1BDC: .4byte gSpecialVar_ItemId
-_080A1BE0: .4byte gMapHeader
-_080A1BE4: .4byte sItemUseOnFieldCB
-_080A1BE8: .4byte sub_80A1C08
-_080A1BEC:
-	ldr r0, _080A1C04 @ =gTasks
-	lsls r1, r4, 2
-	adds r1, r4
-	lsls r1, 3
-	adds r1, r0
-	ldrb r1, [r1, 0xE]
-	adds r0, r4, 0
-	bl sub_80A1110
-_080A1BFE:
-	pop {r4}
-	pop {r0}
-	bx r0
-	.align 2, 0
-_080A1C04: .4byte gTasks
-	thumb_func_end ItemUseOutOfBattle_EscapeRope
-
-	thumb_func_start sub_80A1C08
-sub_80A1C08: @ 80A1C08
-	push {r4,lr}
-	adds r4, r0, 0
-	lsls r4, 24
-	lsrs r4, 24
-	bl sub_8054D70
-	bl sub_80A1A44
-	ldr r1, _080A1C38 @ =gTasks
-	lsls r0, r4, 2
-	adds r0, r4
-	lsls r0, 3
-	adds r0, r1
-	movs r1, 0
-	strh r1, [r0, 0x8]
-	ldr r2, _080A1C3C @ =gStringVar4
-	ldr r3, _080A1C40 @ =sub_80A1C44
-	adds r0, r4, 0
-	movs r1, 0x2
-	bl DisplayItemMessageOnField
-	pop {r4}
-	pop {r0}
-	bx r0
-	.align 2, 0
-_080A1C38: .4byte gTasks
-_080A1C3C: .4byte gStringVar4
-_080A1C40: .4byte sub_80A1C44
-	thumb_func_end sub_80A1C08
-
-	thumb_func_start sub_80A1C44
-sub_80A1C44: @ 80A1C44
-	push {r4,lr}
-	adds r4, r0, 0
-	lsls r4, 24
-	lsrs r4, 24
-	bl ResetInitialPlayerAvatarState
-	bl sub_8085620
-	adds r0, r4, 0
-	bl DestroyTask
-	pop {r4}
-	pop {r0}
-	bx r0
-	thumb_func_end sub_80A1C44
-
-	thumb_func_start FieldUseFunc_TownMap
-FieldUseFunc_TownMap: @ 80A1C60
-	push {r4,r5,lr}
-	lsls r0, 24
-	lsrs r4, r0, 24
-	ldr r1, _080A1C88 @ =gTasks
-	lsls r0, r4, 2
-	adds r0, r4
-	lsls r0, 3
-	adds r5, r0, r1
-	movs r1, 0xE
-	ldrsh r0, [r5, r1]
-	cmp r0, 0
-	bne _080A1C90
-	ldr r0, _080A1C8C @ =sub_80A1CAC
-	bl sub_8108EE0
-	adds r0, r4, 0
-	bl sub_8108B50
-	b _080A1CA0
-	.align 2, 0
-_080A1C88: .4byte gTasks
-_080A1C8C: .4byte sub_80A1CAC
-_080A1C90:
-	bl sub_80CCB68
-	movs r0, 0x1
-	movs r1, 0
-	bl fade_screen
-	ldr r0, _080A1CA8 @ =sub_80A1CC0
-	str r0, [r5]
-_080A1CA0:
-	pop {r4,r5}
-	pop {r0}
-	bx r0
-	.align 2, 0
-_080A1CA8: .4byte sub_80A1CC0
-	thumb_func_end FieldUseFunc_TownMap
-
-	thumb_func_start sub_80A1CAC
-sub_80A1CAC: @ 80A1CAC
-	push {lr}
-	ldr r1, _080A1CBC @ =UseFameCheckerFromMenu
-	movs r0, 0
-	bl sub_80BFF50
-	pop {r0}
-	bx r0
-	.align 2, 0
-_080A1CBC: .4byte UseFameCheckerFromMenu
-	thumb_func_end sub_80A1CAC
-
-	thumb_func_start sub_80A1CC0
-sub_80A1CC0: @ 80A1CC0
-	push {r4,lr}
-	lsls r0, 24
-	lsrs r4, r0, 24
-	ldr r0, _080A1CF0 @ =gPaletteFade
-	ldrb r1, [r0, 0x7]
-	movs r0, 0x80
-	ands r0, r1
-	cmp r0, 0
-	bne _080A1CE8
-	bl CleanupOverworldWindowsAndTilemaps
-	bl sub_80A1184
-	ldr r1, _080A1CF4 @ =CB2_ReturnToField
-	movs r0, 0
-	bl sub_80BFF50
-	adds r0, r4, 0
-	bl DestroyTask
-_080A1CE8:
-	pop {r4}
-	pop {r0}
-	bx r0
-	.align 2, 0
-_080A1CF0: .4byte gPaletteFade
-_080A1CF4: .4byte CB2_ReturnToField
-	thumb_func_end sub_80A1CC0
-
-	thumb_func_start FieldUseFunc_FameChecker
-FieldUseFunc_FameChecker: @ 80A1CF8
-	push {r4,r5,lr}
-	lsls r0, 24
-	lsrs r4, r0, 24
-	ldr r0, _080A1D2C @ =gSpecialVar_ItemId
-	ldrh r2, [r0]
-	ldr r3, _080A1D30 @ =0x0000ffff
-	movs r0, 0x4
-	movs r1, 0
-	bl ItemUse_SetQuestLogEvent
-	ldr r1, _080A1D34 @ =gTasks
-	lsls r0, r4, 2
-	adds r0, r4
-	lsls r0, 3
-	adds r5, r0, r1
-	movs r1, 0xE
-	ldrsh r0, [r5, r1]
-	cmp r0, 0
-	bne _080A1D3C
-	ldr r0, _080A1D38 @ =sub_80A1D58
-	bl sub_8108EE0
-	adds r0, r4, 0
-	bl sub_8108B50
-	b _080A1D4C
-	.align 2, 0
-_080A1D2C: .4byte gSpecialVar_ItemId
-_080A1D30: .4byte 0x0000ffff
-_080A1D34: .4byte gTasks
-_080A1D38: .4byte sub_80A1D58
-_080A1D3C:
-	bl sub_80CCB68
-	movs r0, 0x1
-	movs r1, 0
-	bl fade_screen
-	ldr r0, _080A1D54 @ =sub_80A1D68
-	str r0, [r5]
-_080A1D4C:
-	pop {r4,r5}
-	pop {r0}
-	bx r0
-	.align 2, 0
-_080A1D54: .4byte sub_80A1D68
-	thumb_func_end FieldUseFunc_FameChecker
-
-	thumb_func_start sub_80A1D58
-sub_80A1D58: @ 80A1D58
-	push {lr}
-	ldr r0, _080A1D64 @ =UseFameCheckerFromMenu
-	bl UseFameChecker
-	pop {r0}
-	bx r0
-	.align 2, 0
-_080A1D64: .4byte UseFameCheckerFromMenu
-	thumb_func_end sub_80A1D58
-
-	thumb_func_start sub_80A1D68
-sub_80A1D68: @ 80A1D68
-	push {r4,lr}
-	lsls r0, 24
-	lsrs r4, r0, 24
-	ldr r0, _080A1D94 @ =gPaletteFade
-	ldrb r1, [r0, 0x7]
-	movs r0, 0x80
-	ands r0, r1
-	cmp r0, 0
-	bne _080A1D8E
-	bl CleanupOverworldWindowsAndTilemaps
-	bl sub_80A1184
-	ldr r0, _080A1D98 @ =CB2_ReturnToField
-	bl UseFameChecker
-	adds r0, r4, 0
-	bl DestroyTask
-_080A1D8E:
-	pop {r4}
-	pop {r0}
-	bx r0
-	.align 2, 0
-_080A1D94: .4byte gPaletteFade
-_080A1D98: .4byte CB2_ReturnToField
-	thumb_func_end sub_80A1D68
-
-	thumb_func_start FieldUseFunc_VsSeeker
-FieldUseFunc_VsSeeker: @ 80A1D9C
-	push {lr}
-	lsls r0, 24
-	lsrs r2, r0, 24
-	ldr r0, _080A1DE8 @ =gMapHeader
-	ldrb r0, [r0, 0x17]
-	cmp r0, 0x3
-	beq _080A1DB2
-	cmp r0, 0x1
-	beq _080A1DB2
-	cmp r0, 0x2
-	bne _080A1DD2
-_080A1DB2:
-	ldr r0, _080A1DEC @ =gSaveBlock1Ptr
-	ldr r1, [r0]
-	movs r0, 0x4
-	ldrsb r0, [r1, r0]
-	cmp r0, 0x1
-	bne _080A1DF4
-	movs r0, 0x5
-	ldrsb r0, [r1, r0]
-	cmp r0, 0
-	beq _080A1DD2
-	cmp r0, 0x61
-	beq _080A1DD2
-	cmp r0, 0x6D
-	beq _080A1DD2
-	cmp r0, 0x79
-	bne _080A1DF4
-_080A1DD2:
-	ldr r0, _080A1DF0 @ =gTasks
-	lsls r1, r2, 2
-	adds r1, r2
-	lsls r1, 3
-	adds r1, r0
-	ldrb r1, [r1, 0xE]
-	adds r0, r2, 0
-	bl sub_80A1110
-	b _080A1E00
-	.align 2, 0
-_080A1DE8: .4byte gMapHeader
-_080A1DEC: .4byte gSaveBlock1Ptr
-_080A1DF0: .4byte gTasks
-_080A1DF4:
-	ldr r1, _080A1E04 @ =sItemUseOnFieldCB
-	ldr r0, _080A1E08 @ =Task_VsSeeker_0
-	str r0, [r1]
-	adds r0, r2, 0
-	bl sub_80A103C
-_080A1E00:
-	pop {r0}
-	bx r0
-	.align 2, 0
-_080A1E04: .4byte sItemUseOnFieldCB
-_080A1E08: .4byte Task_VsSeeker_0
-	thumb_func_end FieldUseFunc_VsSeeker
-
-	thumb_func_start sub_80A1E0C
-sub_80A1E0C: @ 80A1E0C
-	push {lr}
-	lsls r0, 24
-	lsrs r0, 24
-	bl sub_80A112C
-	pop {r0}
-	bx r0
-	thumb_func_end sub_80A1E0C
-
-	thumb_func_start BattleUseFunc_MasterBall
-BattleUseFunc_MasterBall: @ 80A1E1C
-	push {r4,lr}
-	lsls r0, 24
-	lsrs r4, r0, 24
-	bl IsPlayerPartyAndPokemonStorageFull
-	lsls r0, 24
-	cmp r0, 0
-	bne _080A1E48
-	ldr r0, _080A1E44 @ =gSpecialVar_ItemId
-	ldrh r0, [r0]
-	movs r1, 0x1
-	bl RemoveBagItem
-	bl sub_8108CB4
-	adds r0, r4, 0
-	bl sub_8108B50
-	b _080A1E54
-	.align 2, 0
-_080A1E44: .4byte gSpecialVar_ItemId
-_080A1E48:
-	ldr r2, _080A1E5C @ =gUnknown_8416631
-	ldr r3, _080A1E60 @ =sub_810A1F8
-	adds r0, r4, 0
-	movs r1, 0x2
-	bl DisplayItemMessageInBag
-_080A1E54:
-	pop {r4}
-	pop {r0}
-	bx r0
-	.align 2, 0
-_080A1E5C: .4byte gUnknown_8416631
-_080A1E60: .4byte sub_810A1F8
-	thumb_func_end BattleUseFunc_MasterBall
-
-	thumb_func_start BattleUseFunc_PokeFlute
-BattleUseFunc_PokeFlute: @ 80A1E64
-	push {r4,lr}
-	adds r4, r0, 0
-	lsls r4, 24
-	lsrs r4, 24
-	bl sub_8108CB4
-	adds r0, r4, 0
-	bl sub_8108B50
-	pop {r4}
-	pop {r0}
-	bx r0
-	thumb_func_end BattleUseFunc_PokeFlute
-
-	thumb_func_start BattleUseFunc_GuardSpec
-BattleUseFunc_GuardSpec: @ 80A1E7C
-	push {r4,lr}
-	lsls r0, 24
-	lsrs r4, r0, 24
-	ldr r1, _080A1EBC @ =gBattlerPartyIndexes
-	ldr r0, _080A1EC0 @ =gBattlerInMenuId
-	ldrb r0, [r0]
-	lsls r0, 1
-	adds r0, r1
-	ldrh r2, [r0]
-	movs r0, 0x64
-	muls r0, r2
-	ldr r1, _080A1EC4 @ =gPlayerParty
-	adds r0, r1
-	ldr r1, _080A1EC8 @ =gSpecialVar_ItemId
-	ldrh r1, [r1]
-	lsls r2, 24
-	lsrs r2, 24
-	movs r3, 0
-	bl ExecuteTableBasedItemEffect
-	lsls r0, 24
-	lsrs r2, r0, 24
-	cmp r2, 0
-	beq _080A1ED4
-	ldr r2, _080A1ECC @ =gUnknown_84169DC
-	ldr r3, _080A1ED0 @ =sub_810A1F8
-	adds r0, r4, 0
-	movs r1, 0x2
-	bl DisplayItemMessageInBag
-	b _080A1EE4
-	.align 2, 0
-_080A1EBC: .4byte gBattlerPartyIndexes
-_080A1EC0: .4byte gBattlerInMenuId
-_080A1EC4: .4byte gPlayerParty
-_080A1EC8: .4byte gSpecialVar_ItemId
-_080A1ECC: .4byte gUnknown_84169DC
-_080A1ED0: .4byte sub_810A1F8
-_080A1ED4:
-	ldr r0, _080A1EEC @ =gTasks
-	lsls r1, r4, 2
-	adds r1, r4
-	lsls r1, 3
-	adds r1, r0
-	strh r2, [r1, 0x18]
-	ldr r0, _080A1EF0 @ =sub_80A1EF4
-	str r0, [r1]
-_080A1EE4:
-	pop {r4}
-	pop {r0}
-	bx r0
-	.align 2, 0
-_080A1EEC: .4byte gTasks
-_080A1EF0: .4byte sub_80A1EF4
-	thumb_func_end BattleUseFunc_GuardSpec
-
-	thumb_func_start sub_80A1EF4
-sub_80A1EF4: @ 80A1EF4
-	push {r4,r5,lr}
-	lsls r0, 24
-	lsrs r5, r0, 24
-	lsls r1, r5, 2
-	adds r1, r5
-	lsls r1, 3
-	ldr r0, _080A1F3C @ =gTasks+0x8
-	adds r1, r0
-	ldrh r0, [r1, 0x10]
-	adds r0, 0x1
-	strh r0, [r1, 0x10]
-	lsls r0, 16
-	asrs r0, 16
-	cmp r0, 0x7
-	ble _080A1F36
-	ldr r0, _080A1F40 @ =gSpecialVar_ItemId
-	ldrh r4, [r0]
-	movs r0, 0x1
-	bl PlaySE
-	adds r0, r4, 0
-	movs r1, 0x1
-	bl RemoveBagItem
-	adds r0, r4, 0
-	bl sub_8042DA4
-	adds r2, r0, 0
-	ldr r3, _080A1F44 @ =sub_80A1F48
-	adds r0, r5, 0
-	movs r1, 0x2
-	bl DisplayItemMessageInBag
-_080A1F36:
-	pop {r4,r5}
-	pop {r0}
-	bx r0
-	.align 2, 0
-_080A1F3C: .4byte gTasks+0x8
-_080A1F40: .4byte gSpecialVar_ItemId
-_080A1F44: .4byte sub_80A1F48
-	thumb_func_end sub_80A1EF4
-
-	thumb_func_start sub_80A1F48
-sub_80A1F48: @ 80A1F48
-	push {r4,lr}
-	lsls r0, 24
-	lsrs r4, r0, 24
-	ldr r0, _080A1F74 @ =gMain
-	ldrh r1, [r0, 0x2E]
-	movs r0, 0x1
-	ands r0, r1
-	cmp r0, 0
-	bne _080A1F62
-	movs r0, 0x2
-	ands r0, r1
-	cmp r0, 0
-	beq _080A1F6C
-_080A1F62:
-	bl sub_8108CB4
-	adds r0, r4, 0
-	bl sub_8108B50
-_080A1F6C:
-	pop {r4}
-	pop {r0}
-	bx r0
-	.align 2, 0
-_080A1F74: .4byte gMain
-	thumb_func_end sub_80A1F48
-
-	thumb_func_start sub_80A1F78
-sub_80A1F78: @ 80A1F78
-	push {r4,lr}
-	lsls r0, 24
-	lsrs r4, r0, 24
-	ldr r0, _080A1F9C @ =gSpecialVar_ItemId
-	ldrh r0, [r0]
-	bl GetPocketByItemId
-	lsls r0, 24
-	lsrs r0, 24
-	cmp r0, 0x5
-	bne _080A1FA4
-	ldr r0, _080A1FA0 @ =sub_81279E0
-	bl sub_813D934
-	adds r0, r4, 0
-	bl sub_813D808
-	b _080A1FB0
-	.align 2, 0
-_080A1F9C: .4byte gSpecialVar_ItemId
-_080A1FA0: .4byte sub_81279E0
-_080A1FA4:
-	ldr r0, _080A1FB8 @ =sub_81279E0
-	bl sub_8108EE0
-	adds r0, r4, 0
-	bl sub_8108B50
-_080A1FB0:
-	pop {r4}
-	pop {r0}
-	bx r0
-	.align 2, 0
-_080A1FB8: .4byte sub_81279E0
-	thumb_func_end sub_80A1F78
-
-	thumb_func_start BattleUseFunc_OpenPartyMenu
-BattleUseFunc_OpenPartyMenu: @ 80A1FBC
-	push {lr}
-	lsls r0, 24
-	lsrs r0, 24
-	ldr r2, _080A1FD0 @ =gUnknown_3005E98
-	ldr r1, _080A1FD4 @ =ItemUseCB_Medicine
-	str r1, [r2]
-	bl sub_80A1F78
-	pop {r0}
-	bx r0
-	.align 2, 0
-_080A1FD0: .4byte gUnknown_3005E98
-_080A1FD4: .4byte ItemUseCB_Medicine
-	thumb_func_end BattleUseFunc_OpenPartyMenu
-
-	thumb_func_start sub_80A1FD8
-sub_80A1FD8: @ 80A1FD8
-	push {lr}
-	lsls r0, 24
-	lsrs r0, 24
-	ldr r2, _080A1FEC @ =gUnknown_3005E98
-	ldr r1, _080A1FF0 @ =sub_8126894
-	str r1, [r2]
-	bl sub_80A1F78
-	pop {r0}
-	bx r0
-	.align 2, 0
-_080A1FEC: .4byte gUnknown_3005E98
-_080A1FF0: .4byte sub_8126894
-	thumb_func_end sub_80A1FD8
-
-	thumb_func_start BattleUseFunc_Ether
-BattleUseFunc_Ether: @ 80A1FF4
-	push {lr}
-	lsls r0, 24
-	lsrs r0, 24
-	ldr r2, _080A2008 @ =gUnknown_3005E98
-	ldr r1, _080A200C @ =sub_81256F8
-	str r1, [r2]
-	bl sub_80A1F78
-	pop {r0}
-	bx r0
-	.align 2, 0
-_080A2008: .4byte gUnknown_3005E98
-_080A200C: .4byte sub_81256F8
-	thumb_func_end BattleUseFunc_Ether
-
-	thumb_func_start BattleUseFunc_PokeDoll
-BattleUseFunc_PokeDoll: @ 80A2010
-	push {r4,lr}
-	lsls r0, 24
-	lsrs r4, r0, 24
-	ldr r0, _080A2044 @ =gBattleTypeFlags
-	ldr r0, [r0]
-	movs r1, 0x8
-	ands r0, r1
-	cmp r0, 0
-	bne _080A2058
-	bl sub_80A1A44
-	ldr r0, _080A2048 @ =gSpecialVar_ItemId
-	ldrh r2, [r0]
-	ldr r3, _080A204C @ =0x0000ffff
-	movs r0, 0x4
-	movs r1, 0
-	bl ItemUse_SetQuestLogEvent
-	ldr r2, _080A2050 @ =gStringVar4
-	ldr r3, _080A2054 @ =sub_8108B50
-	adds r0, r4, 0
-	movs r1, 0x2
-	bl DisplayItemMessageInBag
-	b _080A2060
-	.align 2, 0
-_080A2044: .4byte gBattleTypeFlags
-_080A2048: .4byte gSpecialVar_ItemId
-_080A204C: .4byte 0x0000ffff
-_080A2050: .4byte gStringVar4
-_080A2054: .4byte sub_8108B50
-_080A2058:
-	adds r0, r4, 0
-	movs r1, 0
-	bl sub_80A1110
-_080A2060:
-	pop {r4}
-	pop {r0}
-	bx r0
-	thumb_func_end BattleUseFunc_PokeDoll
-
-	thumb_func_start ItemUseOutOfBattle_EnigmaBerry
-ItemUseOutOfBattle_EnigmaBerry: @ 80A2068
-	push {r4,lr}
-	lsls r0, 24
-	lsrs r4, r0, 24
-	ldr r0, _080A208C @ =gSpecialVar_ItemId
-	ldrh r0, [r0]
-	bl GetItemEffectType
-	lsls r0, 24
-	lsrs r0, 24
-	subs r0, 0x1
-	cmp r0, 0x14
-	bls _080A2082
-	b _080A2174
-_080A2082:
-	lsls r0, 2
-	ldr r1, _080A2090 @ =_080A2094
-	adds r0, r1
-	ldr r0, [r0]
-	mov pc, r0
-	.align 2, 0
-_080A208C: .4byte gSpecialVar_ItemId
-_080A2090: .4byte _080A2094
-	.align 2, 0
-_080A2094:
-	.4byte _080A2120
-	.4byte _080A20E8
-	.4byte _080A20E8
-	.4byte _080A20E8
-	.4byte _080A20E8
-	.4byte _080A20E8
-	.4byte _080A20E8
-	.4byte _080A2174
-	.4byte _080A2174
-	.4byte _080A2104
-	.4byte _080A20E8
-	.4byte _080A20E8
-	.4byte _080A20E8
-	.4byte _080A20E8
-	.4byte _080A20E8
-	.4byte _080A20E8
-	.4byte _080A20E8
-	.4byte _080A2174
-	.4byte _080A213C
-	.4byte _080A213C
-	.4byte _080A2158
-_080A20E8:
-	ldr r0, _080A2100 @ =gTasks
-	lsls r1, r4, 2
-	adds r1, r4
-	lsls r1, 3
-	adds r1, r0
-	movs r0, 0x1
-	strh r0, [r1, 0x10]
-	adds r0, r4, 0
-	bl FieldUseFunc_OpenPartyMenu
-	b _080A2188
-	.align 2, 0
-_080A2100: .4byte gTasks
-_080A2104:
-	ldr r0, _080A211C @ =gTasks
-	lsls r1, r4, 2
-	adds r1, r4
-	lsls r1, 3
-	adds r1, r0
-	movs r0, 0x1
-	strh r0, [r1, 0x10]
-	adds r0, r4, 0
-	bl FieldUseFunc_SacredAsh
-	b _080A2188
-	.align 2, 0
-_080A211C: .4byte gTasks
-_080A2120:
-	ldr r0, _080A2138 @ =gTasks
-	lsls r1, r4, 2
-	adds r1, r4
-	lsls r1, 3
-	adds r1, r0
-	movs r0, 0x1
-	strh r0, [r1, 0x10]
-	adds r0, r4, 0
-	bl FieldUseFunc_RareCandy
-	b _080A2188
-	.align 2, 0
-_080A2138: .4byte gTasks
-_080A213C:
-	ldr r0, _080A2154 @ =gTasks
-	lsls r1, r4, 2
-	adds r1, r4
-	lsls r1, 3
-	adds r1, r0
-	movs r0, 0x1
-	strh r0, [r1, 0x10]
-	adds r0, r4, 0
-	bl FieldUseFunc_PpUp
-	b _080A2188
-	.align 2, 0
-_080A2154: .4byte gTasks
-_080A2158:
-	ldr r0, _080A2170 @ =gTasks
-	lsls r1, r4, 2
-	adds r1, r4
-	lsls r1, 3
-	adds r1, r0
-	movs r0, 0x1
-	strh r0, [r1, 0x10]
-	adds r0, r4, 0
-	bl FieldUseFunc_Ether
-	b _080A2188
-	.align 2, 0
-_080A2170: .4byte gTasks
-_080A2174:
-	ldr r0, _080A2190 @ =gTasks
-	lsls r1, r4, 2
-	adds r1, r4
-	lsls r1, 3
-	adds r1, r0
-	movs r0, 0x4
-	strh r0, [r1, 0x10]
-	adds r0, r4, 0
-	bl FieldUseFunc_OakStopsYou
-_080A2188:
-	pop {r4}
-	pop {r0}
-	bx r0
-	.align 2, 0
-_080A2190: .4byte gTasks
-	thumb_func_end ItemUseOutOfBattle_EnigmaBerry
-
-	thumb_func_start ItemUseInBattle_EnigmaBerry
-ItemUseInBattle_EnigmaBerry: @ 80A2194
-	push {r4,lr}
-	lsls r0, 24
-	lsrs r4, r0, 24
-	ldr r0, _080A21B4 @ =gSpecialVar_ItemId
-	ldrh r0, [r0]
-	bl GetItemEffectType
-	lsls r0, 24
-	lsrs r0, 24
-	cmp r0, 0x15
-	bhi _080A222C
-	lsls r0, 2
-	ldr r1, _080A21B8 @ =_080A21BC
-	adds r0, r1
-	ldr r0, [r0]
-	mov pc, r0
-	.align 2, 0
-_080A21B4: .4byte gSpecialVar_ItemId
-_080A21B8: .4byte _080A21BC
-	.align 2, 0
-_080A21BC:
-	.4byte _080A2214
-	.4byte _080A222C
-	.4byte _080A221C
-	.4byte _080A221C
-	.4byte _080A221C
-	.4byte _080A221C
-	.4byte _080A221C
-	.4byte _080A221C
-	.4byte _080A221C
-	.4byte _080A221C
-	.4byte _080A222C
-	.4byte _080A221C
-	.4byte _080A222C
-	.4byte _080A222C
-	.4byte _080A222C
-	.4byte _080A222C
-	.4byte _080A222C
-	.4byte _080A222C
-	.4byte _080A222C
-	.4byte _080A222C
-	.4byte _080A222C
-	.4byte _080A2224
-_080A2214:
-	adds r0, r4, 0
-	bl BattleUseFunc_GuardSpec
-	b _080A2232
-_080A221C:
-	adds r0, r4, 0
-	bl BattleUseFunc_OpenPartyMenu
-	b _080A2232
-_080A2224:
-	adds r0, r4, 0
-	bl BattleUseFunc_Ether
-	b _080A2232
-_080A222C:
-	adds r0, r4, 0
-	bl FieldUseFunc_OakStopsYou
-_080A2232:
-	pop {r4}
-	pop {r0}
-	bx r0
-	thumb_func_end ItemUseInBattle_EnigmaBerry
-
-	thumb_func_start FieldUseFunc_OakStopsYou
-FieldUseFunc_OakStopsYou: @ 80A2238
-	push {r4,r5,lr}
-	lsls r0, 24
-	lsrs r5, r0, 24
-	ldr r0, _080A2268 @ =gSpecialVar_ItemId
-	ldrh r0, [r0]
-	bl GetPocketByItemId
-	lsls r0, 24
-	lsrs r0, 24
-	cmp r0, 0x5
-	bne _080A2278
-	ldr r4, _080A226C @ =gStringVar4
-	ldr r1, _080A2270 @ =gUnknown_8416425
-	adds r0, r4, 0
-	bl StringExpandPlaceholders
-	ldr r3, _080A2274 @ =sub_813E2B8
-	adds r0, r5, 0
-	movs r1, 0x4
-	adds r2, r4, 0
-	bl sub_813EB20
-	b _080A228A
-	.align 2, 0
-_080A2268: .4byte gSpecialVar_ItemId
-_080A226C: .4byte gStringVar4
-_080A2270: .4byte gUnknown_8416425
-_080A2274: .4byte sub_813E2B8
-_080A2278:
-	ldr r0, _080A2290 @ =gTasks
-	lsls r1, r5, 2
-	adds r1, r5
-	lsls r1, 3
-	adds r1, r0
-	ldrb r1, [r1, 0xE]
-	adds r0, r5, 0
-	bl sub_80A1110
-_080A228A:
-	pop {r4,r5}
-	pop {r0}
-	bx r0
-	.align 2, 0
-_080A2290: .4byte gTasks
-	thumb_func_end FieldUseFunc_OakStopsYou
-
-	thumb_func_start ItemUse_SetQuestLogEvent
-ItemUse_SetQuestLogEvent: @ 80A2294
-	push {r4-r7,lr}
-	mov r7, r8
-	push {r7}
-	adds r7, r1, 0
-	adds r4, r2, 0
-	adds r5, r3, 0
-	lsls r0, 24
-	lsrs r0, 24
-	mov r8, r0
-	lsls r4, 16
-	lsrs r4, 16
-	lsls r5, 16
-	lsrs r5, 16
-	movs r0, 0x8
-	bl Alloc
-	adds r6, r0, 0
-	strh r4, [r6]
-	strh r5, [r6, 0x6]
-	cmp r7, 0
-	beq _080A22C8
-	adds r0, r7, 0
-	movs r1, 0x41
-	bl GetMonData
-	b _080A22CA
-_080A22C8:
-	ldr r0, _080A22E4 @ =0x0000ffff
-_080A22CA:
-	strh r0, [r6, 0x4]
-	mov r0, r8
-	adds r1, r6, 0
-	bl sub_8113550
-	adds r0, r6, 0
-	bl Free
-	pop {r3}
-	mov r8, r3
-	pop {r4-r7}
-	pop {r0}
-	bx r0
-	.align 2, 0
-_080A22E4: .4byte 0x0000ffff
-	thumb_func_end ItemUse_SetQuestLogEvent
-
-	.align 2, 0 @ Don't pad with nop.
diff --git a/asm/party_menu.s b/asm/party_menu.s
index be6521bdb..5a55f9f5b 100644
--- a/asm/party_menu.s
+++ b/asm/party_menu.s
@@ -12617,7 +12617,7 @@ sub_8124DB0: @ 8124DB0
 	movs r0, 0x6
 	movs r1, 0
 	movs r2, 0xFF
-	bl sub_813CD50
+	bl InitBerryPouch
 	pop {r0}
 	bx r0
 	thumb_func_end sub_8124DB0
diff --git a/asm/start_menu.s b/asm/start_menu.s
index 358eb7283..9dc9fbab6 100644
--- a/asm/start_menu.s
+++ b/asm/start_menu.s
@@ -911,14 +911,14 @@ _0806F498:
 	bl PlayRainStoppingSoundEffect
 	bl sub_806EF18
 	bl CleanupOverworldWindowsAndTilemaps
-	ldr r0, _0806F4B0 @ =UseFameCheckerFromMenu
+	ldr r0, _0806F4B0 @ =ReturnToBagFromKeyItem
 	bl SetMainCallback2
 	movs r0, 0x1
 _0806F4AC:
 	pop {r1}
 	bx r1
 	.align 2, 0
-_0806F4B0: .4byte UseFameCheckerFromMenu
+_0806F4B0: .4byte ReturnToBagFromKeyItem
 	thumb_func_end sub_806F480
 
 	thumb_func_start sub_806F4B4
diff --git a/include/berry_pouch.h b/include/berry_pouch.h
index 8427afc7e..7c2bbb5cd 100644
--- a/include/berry_pouch.h
+++ b/include/berry_pouch.h
@@ -1,7 +1,12 @@
 #ifndef GUARD_BERRY_POUCH_H
 #define GUARD_BERRY_POUCH_H
 
+#include "task.h"
+
 void sub_813D808(u8 taskId);
 void sub_813D934(void (*)(void));
+void InitBerryPouch(u8, void (*)(void), u8);
+void sub_813EB20(u8 taskId, u8 bgId, const u8 * str, TaskFunc followUpFunc);
+void sub_813E2B8(u8 taskId);
 
 #endif //GUARD_BERRY_POUCH_H
diff --git a/include/constants/flags.h b/include/constants/flags.h
index 98ec3e47e..209e68aee 100644
--- a/include/constants/flags.h
+++ b/include/constants/flags.h
@@ -1,6 +1,10 @@
 #ifndef GUARD_CONSTANTS_FLAGS_H
 #define GUARD_CONSTANTS_FLAGS_H
 
+// Sys Flags Maybe
+#define FLAG_WHITE_FLUTE_ACTIVE                                     0x803
+#define FLAG_BLACK_FLUTE_ACTIVE                                     0x804
+
 // World Map Flags
 #define FLAG_WORLD_MAP_PALLET_TOWN                                  0x890
 #define FLAG_WORLD_MAP_VIRIDIAN_CITY                                0x891
diff --git a/include/constants/vars.h b/include/constants/vars.h
index 38c47c965..989b27387 100644
--- a/include/constants/vars.h
+++ b/include/constants/vars.h
@@ -35,8 +35,8 @@
 #define VAR_0x401D                 0x401D
 #define VAR_0x401E                 0x401E
 #define VAR_0x401F                 0x401F
-#define VAR_RECYCLE_GOODS          0x4020
-#define VAR_REPEL_STEP_COUNT       0x4021
+#define VAR_REPEL_STEP_COUNT       0x4020
+#define VAR_0x4021                 0x4021
 #define VAR_ICE_STEP_COUNT         0x4022
 #define VAR_0x4023                 0x4023
 #define VAR_MIRAGE_RND_H           0x4024
diff --git a/include/field_effect.h b/include/field_effect.h
index 979037a8e..426f77510 100644
--- a/include/field_effect.h
+++ b/include/field_effect.h
@@ -82,5 +82,6 @@ bool8 FieldEffectActiveListContains(u8 id);
 void sub_80B69DC(void);
 void CreateTeleportFieldEffectTask(void);
 void FieldEffectActiveListRemove(u8 id);
+void sub_8085620(void);
 
 #endif //GUARD_FIELD_EFFECTS_H
diff --git a/include/field_specials.h b/include/field_specials.h
index c1bc8e8c9..a12fee575 100644
--- a/include/field_specials.h
+++ b/include/field_specials.h
@@ -7,5 +7,6 @@ u8 GetLeadMonIndex(void);
 u8 CountDigits(u16 number);
 void TV_PrintIntToStringVar(u8, int);
 u16 ScrSpecial_GetStarter(void);
+void sub_80CCB68(void);
 
 #endif // GUARD_FIELD_SPECIALS_H
diff --git a/include/item_menu.h b/include/item_menu.h
index e8ccfcbd9..cfe55769d 100644
--- a/include/item_menu.h
+++ b/include/item_menu.h
@@ -27,12 +27,15 @@ void sub_81AAC50(void);
 void sub_81AAC70(void);
 void sub_8108CF0(void);
 void sub_810B108(u8);
-void UseFameCheckerFromMenu(void);
+void ReturnToBagFromKeyItem(void);
 void ItemMenu_MoveItemSlotToNewPositionInArray(struct ItemSlot * slots, int pos1, int pos2);
 void sub_8108B50(u8 taskId);
 void sub_8108CB4(void);
 void sub_8108EE0(void (*)(void));
 void DisplayItemMessageInBag(u8 taskId, u8 bgId, const u8 * string, TaskFunc followUpFunc);
 void sub_810A1F8(u8 taskId);
+void sub_8107ECC(void);
+void sub_8108DC8(u8 pocketId);
+void sub_81089F4(u8 pocketId);
 
 #endif //GUARD_ITEM_MENU_H
diff --git a/include/item_use.h b/include/item_use.h
index d8356d7c1..0a45762f7 100644
--- a/include/item_use.h
+++ b/include/item_use.h
@@ -12,7 +12,7 @@ void FieldUseFunc_OldRod(u8 taskId);
 void FieldUseFunc_CoinCase(u8 taskId);
 void FieldUseFunc_PowderJar(u8 taskId);
 void FieldUseFunc_PokeFlute(u8 taskId);
-void FieldUseFunc_OpenPartyMenu(u8 taskId);
+void FieldUseFunc_Medicine(u8 taskId);
 void FieldUseFunc_Ether(u8 taskId);
 void FieldUseFunc_PpUp(u8 taskId);
 void FieldUseFunc_RareCandy(u8 taskId);
@@ -27,10 +27,10 @@ void FieldUseFunc_BlackFlute(u8 taskId);
 void FieldUseFunc_TownMap(u8 taskId);
 void FieldUseFunc_FameChecker(u8 taskId);
 void FieldUseFunc_VsSeeker(u8 taskId);
-void BattleUseFunc_MasterBall(u8 taskId);
+void BattleUseFunc_PokeBallEtc(u8 taskId);
 void BattleUseFunc_PokeFlute(u8 taskId);
 void BattleUseFunc_GuardSpec(u8 taskId);
-void BattleUseFunc_OpenPartyMenu(u8 taskId);
+void BattleUseFunc_Medicine(u8 taskId);
 void BattleUseFunc_Ether(u8 taskId);
 void BattleUseFunc_PokeDoll(u8 taskId);
 void FieldUseFunc_OakStopsYou(u8 taskId);
diff --git a/include/itemfinder.h b/include/itemfinder.h
new file mode 100644
index 000000000..2b882b144
--- /dev/null
+++ b/include/itemfinder.h
@@ -0,0 +1,6 @@
+#ifndef GUARD_ITEMFINDER_H
+#define GUARD_ITEMFINDER_H
+
+void sub_813EC8C(u8 taskId);
+
+#endif //GUARD_ITEMFINDER_H
diff --git a/include/mail.h b/include/mail.h
index 8cfca66dd..9ffccbb5b 100644
--- a/include/mail.h
+++ b/include/mail.h
@@ -21,6 +21,6 @@ bool8 MonHasMail(struct Pokemon *mon);
 void TakeMailFromMon(struct Pokemon *mon);
 u8 GiveMailToMon2(struct Pokemon *mon, struct MailStruct *mail);
 void ClearMailStruct(struct MailStruct *mail);
-void sub_80BEBEC(u16 *, void (*)(void), u8);
+void sub_80BEBEC(struct MailStruct * mail, void (* callback)(void), u8 a2);
 
 #endif // GUARD_MAIL_H
diff --git a/include/overworld.h b/include/overworld.h
index 122d73736..ab77542c2 100644
--- a/include/overworld.h
+++ b/include/overworld.h
@@ -115,5 +115,6 @@ void sub_8055DC4(void);
 bool8 sub_8055FC4(void);
 bool8 is_light_level_8_or_9(u8 mapType);
 bool32 sub_8055C9C(void);
+void sub_8054D70(void);
 
 #endif //GUARD_ROM4_H
diff --git a/include/party_menu.h b/include/party_menu.h
index 527147296..5b40a945a 100644
--- a/include/party_menu.h
+++ b/include/party_menu.h
@@ -52,5 +52,14 @@ void GetMonNickname(const struct Pokemon * mon, u8 * dest);
 void sub_81202F8(const u8 * src, u8 a1);
 bool8 sub_8120370(void);
 void PartyMenuInit(u8 a, u8 b, u8 c, u8 d, u8 messageId, TaskFunc task, MainCallback callback);
+void sub_81252D0(u8 taskId, TaskFunc followUpFunc);
+void sub_81256F8(u8 taskId, TaskFunc followUpFunc);
+void dp05_pp_up(u8 taskId, TaskFunc followUpFunc);
+void dp05_rare_candy(u8 taskId, TaskFunc followUpFunc);
+void sub_8126B60(u8 taskId, TaskFunc followUpFunc);
+void sub_8126894(u8 taskId, TaskFunc followUpFunc);
+void sub_81279E0(void);
+void ItemUseCB_Medicine(u8 taskId, TaskFunc followUpFunc);
+u8 GetItemEffectType(u16 itemId);
 
 #endif // GUARD_PARTY_MENU_H
diff --git a/include/pokemon.h b/include/pokemon.h
index a6dd9931b..ec828131b 100644
--- a/include/pokemon.h
+++ b/include/pokemon.h
@@ -678,4 +678,6 @@ u8 GetMonsStateToDoubles(void);
 void sub_803E0A4(struct Pokemon *mon, struct BattleTowerPokemon *src);
 void SetMultiuseSpriteTemplateToPokemon(u16 trainerSpriteId, u8 battlerPosition);
 
+const u8 * sub_8042DA4(u16 itemId);
+
 #endif // GUARD_POKEMON_H
diff --git a/include/region_map.h b/include/region_map.h
index ea8a8130e..394fee469 100644
--- a/include/region_map.h
+++ b/include/region_map.h
@@ -95,5 +95,6 @@ void CreateRegionMapCursor(u16 tileTag, u16 paletteTag);
 u8 *GetMapName(u8 *, u16, u16);
 bool32 sub_8124668(u8 mapSecId);
 void sub_80C4DF8(u8 *, u8);
+void sub_80BFF50(u8 a0, void (*a1)(void));
 
 #endif //GUARD_REGION_MAP_H
diff --git a/include/strings.h b/include/strings.h
index 23562d4b9..1aa858e82 100644
--- a/include/strings.h
+++ b/include/strings.h
@@ -164,10 +164,16 @@ extern const u8 gText_ReturnToPC[];
 extern const u8 gUnknown_8416425[];
 extern const u8 gUnknown_8416451[];
 extern const u8 gUnknown_8416537[];
+extern const u8 gUnknown_841658C[];
+extern const u8 gUnknown_841659E[];
+extern const u8 gUnknown_84165D2[];
+extern const u8 gUnknown_8416600[];
+extern const u8 gUnknown_8416631[];
 extern const u8 gUnknown_8416644[];
 extern const u8 gUnknown_841665C[];
 extern const u8 gUnknown_8416690[];
 extern const u8 gUnknown_84166A7[];
+extern const u8 gUnknown_84169DC[];
 
 extern const u8 gUnknown_84162BD[];
 
diff --git a/ld_script.txt b/ld_script.txt
index 62ac8c008..9556fb8fd 100644
--- a/ld_script.txt
+++ b/ld_script.txt
@@ -154,7 +154,6 @@ SECTIONS {
         asm/field_special_scene.o(.text);
         asm/safari_zone.o(.text);
         src/item_use.o(.text);
-        asm/item_use.o(.text);
         asm/battle_anim_effects_1.o(.text);
         asm/battle_anim_effects_2.o(.text);
         asm/water.o(.text);
diff --git a/src/data/items.json b/src/data/items.json
index 8d176df3d..b976e4c3e 100644
--- a/src/data/items.json
+++ b/src/data/items.json
@@ -29,7 +29,7 @@
       "type": 0,
       "fieldUseFunc": "NULL",
       "battleUsage": 2,
-      "battleUseFunc": "BattleUseFunc_MasterBall",
+      "battleUseFunc": "BattleUseFunc_PokeBallEtc",
       "secondaryId": 0
     },
     {
@@ -45,7 +45,7 @@
       "type": 1,
       "fieldUseFunc": "NULL",
       "battleUsage": 2,
-      "battleUseFunc": "BattleUseFunc_MasterBall",
+      "battleUseFunc": "BattleUseFunc_PokeBallEtc",
       "secondaryId": 1
     },
     {
@@ -61,7 +61,7 @@
       "type": 2,
       "fieldUseFunc": "NULL",
       "battleUsage": 2,
-      "battleUseFunc": "BattleUseFunc_MasterBall",
+      "battleUseFunc": "BattleUseFunc_PokeBallEtc",
       "secondaryId": 2
     },
     {
@@ -77,7 +77,7 @@
       "type": 3,
       "fieldUseFunc": "NULL",
       "battleUsage": 2,
-      "battleUseFunc": "BattleUseFunc_MasterBall",
+      "battleUseFunc": "BattleUseFunc_PokeBallEtc",
       "secondaryId": 3
     },
     {
@@ -93,7 +93,7 @@
       "type": 4,
       "fieldUseFunc": "NULL",
       "battleUsage": 2,
-      "battleUseFunc": "BattleUseFunc_MasterBall",
+      "battleUseFunc": "BattleUseFunc_PokeBallEtc",
       "secondaryId": 4
     },
     {
@@ -109,7 +109,7 @@
       "type": 5,
       "fieldUseFunc": "NULL",
       "battleUsage": 2,
-      "battleUseFunc": "BattleUseFunc_MasterBall",
+      "battleUseFunc": "BattleUseFunc_PokeBallEtc",
       "secondaryId": 5
     },
     {
@@ -125,7 +125,7 @@
       "type": 6,
       "fieldUseFunc": "NULL",
       "battleUsage": 2,
-      "battleUseFunc": "BattleUseFunc_MasterBall",
+      "battleUseFunc": "BattleUseFunc_PokeBallEtc",
       "secondaryId": 6
     },
     {
@@ -141,7 +141,7 @@
       "type": 7,
       "fieldUseFunc": "NULL",
       "battleUsage": 2,
-      "battleUseFunc": "BattleUseFunc_MasterBall",
+      "battleUseFunc": "BattleUseFunc_PokeBallEtc",
       "secondaryId": 7
     },
     {
@@ -157,7 +157,7 @@
       "type": 8,
       "fieldUseFunc": "NULL",
       "battleUsage": 2,
-      "battleUseFunc": "BattleUseFunc_MasterBall",
+      "battleUseFunc": "BattleUseFunc_PokeBallEtc",
       "secondaryId": 8
     },
     {
@@ -173,7 +173,7 @@
       "type": 9,
       "fieldUseFunc": "NULL",
       "battleUsage": 2,
-      "battleUseFunc": "BattleUseFunc_MasterBall",
+      "battleUseFunc": "BattleUseFunc_PokeBallEtc",
       "secondaryId": 9
     },
     {
@@ -189,7 +189,7 @@
       "type": 10,
       "fieldUseFunc": "NULL",
       "battleUsage": 2,
-      "battleUseFunc": "BattleUseFunc_MasterBall",
+      "battleUseFunc": "BattleUseFunc_PokeBallEtc",
       "secondaryId": 10
     },
     {
@@ -205,7 +205,7 @@
       "type": 11,
       "fieldUseFunc": "NULL",
       "battleUsage": 2,
-      "battleUseFunc": "BattleUseFunc_MasterBall",
+      "battleUseFunc": "BattleUseFunc_PokeBallEtc",
       "secondaryId": 11
     },
     {
@@ -219,9 +219,9 @@
       "exitsBagOnUse": 0,
       "pocket": "POCKET_ITEMS",
       "type": 1,
-      "fieldUseFunc": "FieldUseFunc_OpenPartyMenu",
+      "fieldUseFunc": "FieldUseFunc_Medicine",
       "battleUsage": 1,
-      "battleUseFunc": "BattleUseFunc_OpenPartyMenu",
+      "battleUseFunc": "BattleUseFunc_Medicine",
       "secondaryId": 0
     },
     {
@@ -235,9 +235,9 @@
       "exitsBagOnUse": 0,
       "pocket": "POCKET_ITEMS",
       "type": 1,
-      "fieldUseFunc": "FieldUseFunc_OpenPartyMenu",
+      "fieldUseFunc": "FieldUseFunc_Medicine",
       "battleUsage": 1,
-      "battleUseFunc": "BattleUseFunc_OpenPartyMenu",
+      "battleUseFunc": "BattleUseFunc_Medicine",
       "secondaryId": 0
     },
     {
@@ -251,9 +251,9 @@
       "exitsBagOnUse": 0,
       "pocket": "POCKET_ITEMS",
       "type": 1,
-      "fieldUseFunc": "FieldUseFunc_OpenPartyMenu",
+      "fieldUseFunc": "FieldUseFunc_Medicine",
       "battleUsage": 1,
-      "battleUseFunc": "BattleUseFunc_OpenPartyMenu",
+      "battleUseFunc": "BattleUseFunc_Medicine",
       "secondaryId": 0
     },
     {
@@ -267,9 +267,9 @@
       "exitsBagOnUse": 0,
       "pocket": "POCKET_ITEMS",
       "type": 1,
-      "fieldUseFunc": "FieldUseFunc_OpenPartyMenu",
+      "fieldUseFunc": "FieldUseFunc_Medicine",
       "battleUsage": 1,
-      "battleUseFunc": "BattleUseFunc_OpenPartyMenu",
+      "battleUseFunc": "BattleUseFunc_Medicine",
       "secondaryId": 0
     },
     {
@@ -283,9 +283,9 @@
       "exitsBagOnUse": 0,
       "pocket": "POCKET_ITEMS",
       "type": 1,
-      "fieldUseFunc": "FieldUseFunc_OpenPartyMenu",
+      "fieldUseFunc": "FieldUseFunc_Medicine",
       "battleUsage": 1,
-      "battleUseFunc": "BattleUseFunc_OpenPartyMenu",
+      "battleUseFunc": "BattleUseFunc_Medicine",
       "secondaryId": 0
     },
     {
@@ -299,9 +299,9 @@
       "exitsBagOnUse": 0,
       "pocket": "POCKET_ITEMS",
       "type": 1,
-      "fieldUseFunc": "FieldUseFunc_OpenPartyMenu",
+      "fieldUseFunc": "FieldUseFunc_Medicine",
       "battleUsage": 1,
-      "battleUseFunc": "BattleUseFunc_OpenPartyMenu",
+      "battleUseFunc": "BattleUseFunc_Medicine",
       "secondaryId": 0
     },
     {
@@ -315,9 +315,9 @@
       "exitsBagOnUse": 0,
       "pocket": "POCKET_ITEMS",
       "type": 1,
-      "fieldUseFunc": "FieldUseFunc_OpenPartyMenu",
+      "fieldUseFunc": "FieldUseFunc_Medicine",
       "battleUsage": 1,
-      "battleUseFunc": "BattleUseFunc_OpenPartyMenu",
+      "battleUseFunc": "BattleUseFunc_Medicine",
       "secondaryId": 0
     },
     {
@@ -331,9 +331,9 @@
       "exitsBagOnUse": 0,
       "pocket": "POCKET_ITEMS",
       "type": 1,
-      "fieldUseFunc": "FieldUseFunc_OpenPartyMenu",
+      "fieldUseFunc": "FieldUseFunc_Medicine",
       "battleUsage": 1,
-      "battleUseFunc": "BattleUseFunc_OpenPartyMenu",
+      "battleUseFunc": "BattleUseFunc_Medicine",
       "secondaryId": 0
     },
     {
@@ -347,9 +347,9 @@
       "exitsBagOnUse": 0,
       "pocket": "POCKET_ITEMS",
       "type": 1,
-      "fieldUseFunc": "FieldUseFunc_OpenPartyMenu",
+      "fieldUseFunc": "FieldUseFunc_Medicine",
       "battleUsage": 1,
-      "battleUseFunc": "BattleUseFunc_OpenPartyMenu",
+      "battleUseFunc": "BattleUseFunc_Medicine",
       "secondaryId": 0
     },
     {
@@ -363,9 +363,9 @@
       "exitsBagOnUse": 0,
       "pocket": "POCKET_ITEMS",
       "type": 1,
-      "fieldUseFunc": "FieldUseFunc_OpenPartyMenu",
+      "fieldUseFunc": "FieldUseFunc_Medicine",
       "battleUsage": 1,
-      "battleUseFunc": "BattleUseFunc_OpenPartyMenu",
+      "battleUseFunc": "BattleUseFunc_Medicine",
       "secondaryId": 0
     },
     {
@@ -379,9 +379,9 @@
       "exitsBagOnUse": 0,
       "pocket": "POCKET_ITEMS",
       "type": 1,
-      "fieldUseFunc": "FieldUseFunc_OpenPartyMenu",
+      "fieldUseFunc": "FieldUseFunc_Medicine",
       "battleUsage": 1,
-      "battleUseFunc": "BattleUseFunc_OpenPartyMenu",
+      "battleUseFunc": "BattleUseFunc_Medicine",
       "secondaryId": 0
     },
     {
@@ -395,9 +395,9 @@
       "exitsBagOnUse": 0,
       "pocket": "POCKET_ITEMS",
       "type": 1,
-      "fieldUseFunc": "FieldUseFunc_OpenPartyMenu",
+      "fieldUseFunc": "FieldUseFunc_Medicine",
       "battleUsage": 1,
-      "battleUseFunc": "BattleUseFunc_OpenPartyMenu",
+      "battleUseFunc": "BattleUseFunc_Medicine",
       "secondaryId": 0
     },
     {
@@ -411,9 +411,9 @@
       "exitsBagOnUse": 0,
       "pocket": "POCKET_ITEMS",
       "type": 1,
-      "fieldUseFunc": "FieldUseFunc_OpenPartyMenu",
+      "fieldUseFunc": "FieldUseFunc_Medicine",
       "battleUsage": 1,
-      "battleUseFunc": "BattleUseFunc_OpenPartyMenu",
+      "battleUseFunc": "BattleUseFunc_Medicine",
       "secondaryId": 0
     },
     {
@@ -427,9 +427,9 @@
       "exitsBagOnUse": 0,
       "pocket": "POCKET_ITEMS",
       "type": 1,
-      "fieldUseFunc": "FieldUseFunc_OpenPartyMenu",
+      "fieldUseFunc": "FieldUseFunc_Medicine",
       "battleUsage": 1,
-      "battleUseFunc": "BattleUseFunc_OpenPartyMenu",
+      "battleUseFunc": "BattleUseFunc_Medicine",
       "secondaryId": 0
     },
     {
@@ -443,9 +443,9 @@
       "exitsBagOnUse": 0,
       "pocket": "POCKET_ITEMS",
       "type": 1,
-      "fieldUseFunc": "FieldUseFunc_OpenPartyMenu",
+      "fieldUseFunc": "FieldUseFunc_Medicine",
       "battleUsage": 1,
-      "battleUseFunc": "BattleUseFunc_OpenPartyMenu",
+      "battleUseFunc": "BattleUseFunc_Medicine",
       "secondaryId": 0
     },
     {
@@ -459,9 +459,9 @@
       "exitsBagOnUse": 0,
       "pocket": "POCKET_ITEMS",
       "type": 1,
-      "fieldUseFunc": "FieldUseFunc_OpenPartyMenu",
+      "fieldUseFunc": "FieldUseFunc_Medicine",
       "battleUsage": 1,
-      "battleUseFunc": "BattleUseFunc_OpenPartyMenu",
+      "battleUseFunc": "BattleUseFunc_Medicine",
       "secondaryId": 0
     },
     {
@@ -475,9 +475,9 @@
       "exitsBagOnUse": 0,
       "pocket": "POCKET_ITEMS",
       "type": 1,
-      "fieldUseFunc": "FieldUseFunc_OpenPartyMenu",
+      "fieldUseFunc": "FieldUseFunc_Medicine",
       "battleUsage": 1,
-      "battleUseFunc": "BattleUseFunc_OpenPartyMenu",
+      "battleUseFunc": "BattleUseFunc_Medicine",
       "secondaryId": 0
     },
     {
@@ -491,9 +491,9 @@
       "exitsBagOnUse": 0,
       "pocket": "POCKET_ITEMS",
       "type": 1,
-      "fieldUseFunc": "FieldUseFunc_OpenPartyMenu",
+      "fieldUseFunc": "FieldUseFunc_Medicine",
       "battleUsage": 1,
-      "battleUseFunc": "BattleUseFunc_OpenPartyMenu",
+      "battleUseFunc": "BattleUseFunc_Medicine",
       "secondaryId": 0
     },
     {
@@ -507,9 +507,9 @@
       "exitsBagOnUse": 0,
       "pocket": "POCKET_ITEMS",
       "type": 1,
-      "fieldUseFunc": "FieldUseFunc_OpenPartyMenu",
+      "fieldUseFunc": "FieldUseFunc_Medicine",
       "battleUsage": 1,
-      "battleUseFunc": "BattleUseFunc_OpenPartyMenu",
+      "battleUseFunc": "BattleUseFunc_Medicine",
       "secondaryId": 0
     },
     {
@@ -523,9 +523,9 @@
       "exitsBagOnUse": 0,
       "pocket": "POCKET_ITEMS",
       "type": 1,
-      "fieldUseFunc": "FieldUseFunc_OpenPartyMenu",
+      "fieldUseFunc": "FieldUseFunc_Medicine",
       "battleUsage": 1,
-      "battleUseFunc": "BattleUseFunc_OpenPartyMenu",
+      "battleUseFunc": "BattleUseFunc_Medicine",
       "secondaryId": 0
     },
     {
@@ -539,9 +539,9 @@
       "exitsBagOnUse": 0,
       "pocket": "POCKET_ITEMS",
       "type": 1,
-      "fieldUseFunc": "FieldUseFunc_OpenPartyMenu",
+      "fieldUseFunc": "FieldUseFunc_Medicine",
       "battleUsage": 1,
-      "battleUseFunc": "BattleUseFunc_OpenPartyMenu",
+      "battleUseFunc": "BattleUseFunc_Medicine",
       "secondaryId": 0
     },
     {
@@ -619,9 +619,9 @@
       "exitsBagOnUse": 0,
       "pocket": "POCKET_ITEMS",
       "type": 1,
-      "fieldUseFunc": "FieldUseFunc_OpenPartyMenu",
+      "fieldUseFunc": "FieldUseFunc_Medicine",
       "battleUsage": 1,
-      "battleUseFunc": "BattleUseFunc_OpenPartyMenu",
+      "battleUseFunc": "BattleUseFunc_Medicine",
       "secondaryId": 0
     },
     {
@@ -635,9 +635,9 @@
       "exitsBagOnUse": 0,
       "pocket": "POCKET_ITEMS",
       "type": 1,
-      "fieldUseFunc": "FieldUseFunc_OpenPartyMenu",
+      "fieldUseFunc": "FieldUseFunc_Medicine",
       "battleUsage": 1,
-      "battleUseFunc": "BattleUseFunc_OpenPartyMenu",
+      "battleUseFunc": "BattleUseFunc_Medicine",
       "secondaryId": 0
     },
     {
@@ -653,7 +653,7 @@
       "type": 1,
       "fieldUseFunc": "FieldUseFunc_OakStopsYou",
       "battleUsage": 1,
-      "battleUseFunc": "BattleUseFunc_OpenPartyMenu",
+      "battleUseFunc": "BattleUseFunc_Medicine",
       "secondaryId": 0
     },
     {
@@ -669,7 +669,7 @@
       "type": 1,
       "fieldUseFunc": "FieldUseFunc_OakStopsYou",
       "battleUsage": 1,
-      "battleUseFunc": "BattleUseFunc_OpenPartyMenu",
+      "battleUseFunc": "BattleUseFunc_Medicine",
       "secondaryId": 0
     },
     {
@@ -715,9 +715,9 @@
       "exitsBagOnUse": 0,
       "pocket": "POCKET_ITEMS",
       "type": 1,
-      "fieldUseFunc": "FieldUseFunc_OpenPartyMenu",
+      "fieldUseFunc": "FieldUseFunc_Medicine",
       "battleUsage": 1,
-      "battleUseFunc": "BattleUseFunc_OpenPartyMenu",
+      "battleUseFunc": "BattleUseFunc_Medicine",
       "secondaryId": 0
     },
     {
@@ -1019,7 +1019,7 @@
       "exitsBagOnUse": 0,
       "pocket": "POCKET_ITEMS",
       "type": 1,
-      "fieldUseFunc": "FieldUseFunc_OpenPartyMenu",
+      "fieldUseFunc": "FieldUseFunc_Medicine",
       "battleUsage": 0,
       "battleUseFunc": "NULL",
       "secondaryId": 0
@@ -1035,7 +1035,7 @@
       "exitsBagOnUse": 0,
       "pocket": "POCKET_ITEMS",
       "type": 1,
-      "fieldUseFunc": "FieldUseFunc_OpenPartyMenu",
+      "fieldUseFunc": "FieldUseFunc_Medicine",
       "battleUsage": 0,
       "battleUseFunc": "NULL",
       "secondaryId": 0
@@ -1051,7 +1051,7 @@
       "exitsBagOnUse": 0,
       "pocket": "POCKET_ITEMS",
       "type": 1,
-      "fieldUseFunc": "FieldUseFunc_OpenPartyMenu",
+      "fieldUseFunc": "FieldUseFunc_Medicine",
       "battleUsage": 0,
       "battleUseFunc": "NULL",
       "secondaryId": 0
@@ -1067,7 +1067,7 @@
       "exitsBagOnUse": 0,
       "pocket": "POCKET_ITEMS",
       "type": 1,
-      "fieldUseFunc": "FieldUseFunc_OpenPartyMenu",
+      "fieldUseFunc": "FieldUseFunc_Medicine",
       "battleUsage": 0,
       "battleUseFunc": "NULL",
       "secondaryId": 0
@@ -1083,7 +1083,7 @@
       "exitsBagOnUse": 0,
       "pocket": "POCKET_ITEMS",
       "type": 1,
-      "fieldUseFunc": "FieldUseFunc_OpenPartyMenu",
+      "fieldUseFunc": "FieldUseFunc_Medicine",
       "battleUsage": 0,
       "battleUseFunc": "NULL",
       "secondaryId": 0
@@ -1131,7 +1131,7 @@
       "exitsBagOnUse": 0,
       "pocket": "POCKET_ITEMS",
       "type": 1,
-      "fieldUseFunc": "FieldUseFunc_OpenPartyMenu",
+      "fieldUseFunc": "FieldUseFunc_Medicine",
       "battleUsage": 0,
       "battleUseFunc": "NULL",
       "secondaryId": 0
@@ -2139,9 +2139,9 @@
       "exitsBagOnUse": 0,
       "pocket": "POCKET_BERRY_POUCH",
       "type": 1,
-      "fieldUseFunc": "FieldUseFunc_OpenPartyMenu",
+      "fieldUseFunc": "FieldUseFunc_Medicine",
       "battleUsage": 1,
-      "battleUseFunc": "BattleUseFunc_OpenPartyMenu",
+      "battleUseFunc": "BattleUseFunc_Medicine",
       "secondaryId": 0
     },
     {
@@ -2155,9 +2155,9 @@
       "exitsBagOnUse": 0,
       "pocket": "POCKET_BERRY_POUCH",
       "type": 1,
-      "fieldUseFunc": "FieldUseFunc_OpenPartyMenu",
+      "fieldUseFunc": "FieldUseFunc_Medicine",
       "battleUsage": 1,
-      "battleUseFunc": "BattleUseFunc_OpenPartyMenu",
+      "battleUseFunc": "BattleUseFunc_Medicine",
       "secondaryId": 0
     },
     {
@@ -2171,9 +2171,9 @@
       "exitsBagOnUse": 0,
       "pocket": "POCKET_BERRY_POUCH",
       "type": 1,
-      "fieldUseFunc": "FieldUseFunc_OpenPartyMenu",
+      "fieldUseFunc": "FieldUseFunc_Medicine",
       "battleUsage": 1,
-      "battleUseFunc": "BattleUseFunc_OpenPartyMenu",
+      "battleUseFunc": "BattleUseFunc_Medicine",
       "secondaryId": 0
     },
     {
@@ -2187,9 +2187,9 @@
       "exitsBagOnUse": 0,
       "pocket": "POCKET_BERRY_POUCH",
       "type": 1,
-      "fieldUseFunc": "FieldUseFunc_OpenPartyMenu",
+      "fieldUseFunc": "FieldUseFunc_Medicine",
       "battleUsage": 1,
-      "battleUseFunc": "BattleUseFunc_OpenPartyMenu",
+      "battleUseFunc": "BattleUseFunc_Medicine",
       "secondaryId": 0
     },
     {
@@ -2203,9 +2203,9 @@
       "exitsBagOnUse": 0,
       "pocket": "POCKET_BERRY_POUCH",
       "type": 1,
-      "fieldUseFunc": "FieldUseFunc_OpenPartyMenu",
+      "fieldUseFunc": "FieldUseFunc_Medicine",
       "battleUsage": 1,
-      "battleUseFunc": "BattleUseFunc_OpenPartyMenu",
+      "battleUseFunc": "BattleUseFunc_Medicine",
       "secondaryId": 0
     },
     {
@@ -2235,9 +2235,9 @@
       "exitsBagOnUse": 0,
       "pocket": "POCKET_BERRY_POUCH",
       "type": 1,
-      "fieldUseFunc": "FieldUseFunc_OpenPartyMenu",
+      "fieldUseFunc": "FieldUseFunc_Medicine",
       "battleUsage": 1,
-      "battleUseFunc": "BattleUseFunc_OpenPartyMenu",
+      "battleUseFunc": "BattleUseFunc_Medicine",
       "secondaryId": 0
     },
     {
@@ -2253,7 +2253,7 @@
       "type": 4,
       "fieldUseFunc": "FieldUseFunc_OakStopsYou",
       "battleUsage": 1,
-      "battleUseFunc": "BattleUseFunc_OpenPartyMenu",
+      "battleUseFunc": "BattleUseFunc_Medicine",
       "secondaryId": 0
     },
     {
@@ -2267,9 +2267,9 @@
       "exitsBagOnUse": 0,
       "pocket": "POCKET_BERRY_POUCH",
       "type": 1,
-      "fieldUseFunc": "FieldUseFunc_OpenPartyMenu",
+      "fieldUseFunc": "FieldUseFunc_Medicine",
       "battleUsage": 1,
-      "battleUseFunc": "BattleUseFunc_OpenPartyMenu",
+      "battleUseFunc": "BattleUseFunc_Medicine",
       "secondaryId": 0
     },
     {
@@ -2283,9 +2283,9 @@
       "exitsBagOnUse": 0,
       "pocket": "POCKET_BERRY_POUCH",
       "type": 1,
-      "fieldUseFunc": "FieldUseFunc_OpenPartyMenu",
+      "fieldUseFunc": "FieldUseFunc_Medicine",
       "battleUsage": 1,
-      "battleUseFunc": "BattleUseFunc_OpenPartyMenu",
+      "battleUseFunc": "BattleUseFunc_Medicine",
       "secondaryId": 0
     },
     {
diff --git a/src/fame_checker.c b/src/fame_checker.c
index b3988d156..bf99bdf56 100644
--- a/src/fame_checker.c
+++ b/src/fame_checker.c
@@ -552,7 +552,7 @@ static void Task_TopMenuHandleInput(u8 taskId)
     if (FindTaskIdByFunc(Task_FCOpenOrCloseInfoBox) == 0xFF)
     {
         RunTextPrinters();
-        if ((JOY_NEW(SELECT_BUTTON)) && !sFameCheckerData->inPickMode && sFameCheckerData->savedCallback != UseFameCheckerFromMenu)
+        if ((JOY_NEW(SELECT_BUTTON)) && !sFameCheckerData->inPickMode && sFameCheckerData->savedCallback != ReturnToBagFromKeyItem)
             task->func = Task_StartToCloseFameChecker;
         else if (JOY_NEW(START_BUTTON))
         {
diff --git a/src/item_use.c b/src/item_use.c
index 5ce0792de..5413a600f 100644
--- a/src/item_use.c
+++ b/src/item_use.c
@@ -1,31 +1,45 @@
 #include "global.h"
+#include "battle.h"
 #include "berry_pouch.h"
 #include "berry_powder.h"
 #include "bike.h"
 #include "coins.h"
 #include "event_data.h"
+#include "field_effect.h"
 #include "field_fadetransition.h"
 #include "field_map_obj_helpers.h"
 #include "field_player_avatar.h"
+#include "field_specials.h"
 #include "field_weather.h"
 #include "fieldmap.h"
 #include "item.h"
 #include "item_menu.h"
 #include "item_use.h"
+#include "itemfinder.h"
 #include "mail.h"
+#include "main.h"
+#include "malloc.h"
 #include "map_obj_80688E4.h"
 #include "map_obj_lock.h"
 #include "metatile_behavior.h"
 #include "new_menu_helpers.h"
 #include "overworld.h"
+#include "palette.h"
+#include "party_menu.h"
+#include "quest_log.h"
+#include "region_map.h"
 #include "script.h"
 #include "sound.h"
 #include "string_util.h"
 #include "strings.h"
 #include "task.h"
+#include "teachy_tv.h"
+#include "tm_case.h"
+#include "vs_seeker.h"
 #include "constants/fanfares.h"
 #include "constants/flags.h"
 #include "constants/items.h"
+#include "constants/maps.h"
 #include "constants/moves.h"
 #include "constants/songs.h"
 
@@ -43,7 +57,24 @@ void ItemUseOnFieldCB_Rod(u8 taskId);
 void FieldUseFunc_EvoItem(u8 taskId);
 void sub_80A1648(u8 taskId);
 void sub_80A1674(u8 taskId);
-void sub_813EC8C(u8 taskId);
+void InitTMCaseFromBag(void);
+void Task_InitTMCaseFromField(u8 taskId);
+void InitBerryPouchFromBag(void);
+void Task_InitBerryPouchFromField(u8 taskId);
+void InitBerryPouchFromBattle(void);
+void InitTeachyTvFromBag(void);
+void Task_InitTeachyTvFromField(u8 taskId);
+void sub_80A19E8(u8 taskId);
+void sub_80A1A44(void);
+void sub_80A1B48(u8 taskId);
+void sub_80A1C08(u8 taskId);
+void sub_80A1C44(u8 taskId);
+void sub_80A1CAC(void);
+void sub_80A1CC0(u8 taskId);
+void sub_80A1D58(void);
+void sub_80A1D68(u8 taskId);
+void sub_80A1EF4(u8 taskId);
+void sub_80A1F48(u8 taskId);
 
 extern void (*const gUnknown_83E2954[])(void);
 
@@ -158,10 +189,10 @@ void FieldUseFunc_OrangeMail(u8 taskId)
 
 void sub_80A1208(void)
 {
-    u16 buffer[18];
+    struct MailStruct mail;
 
-    buffer[16] = gSpecialVar_ItemId;
-    sub_80BEBEC(buffer, UseFameCheckerFromMenu, 0);
+    mail.itemId = gSpecialVar_ItemId;
+    sub_80BEBEC(&mail, ReturnToBagFromKeyItem, 0);
 }
 
 void FieldUseFunc_MachBike(u8 taskId)
@@ -320,3 +351,530 @@ void sub_80A16D0(u8 taskId)
 {
     sub_80A0FBC(taskId);
 }
+
+void FieldUseFunc_Medicine(u8 taskId)
+{
+    gUnknown_3005E98 = sub_81252D0;
+    sub_80A16D0(taskId);
+}
+
+void FieldUseFunc_Ether(u8 taskId)
+{
+    gUnknown_3005E98 = sub_81256F8;
+    sub_80A16D0(taskId);
+}
+
+void FieldUseFunc_PpUp(u8 taskId)
+{
+    gUnknown_3005E98 = dp05_pp_up;
+    sub_80A16D0(taskId);
+}
+
+void FieldUseFunc_RareCandy(u8 taskId)
+{
+    gUnknown_3005E98 = dp05_rare_candy;
+    sub_80A16D0(taskId);
+}
+
+void FieldUseFunc_EvoItem(u8 taskId)
+{
+    gUnknown_3005E98 = sub_8126B60;
+    sub_80A16D0(taskId);
+}
+
+void FieldUseFunc_SacredAsh(u8 taskId)
+{
+    gUnknown_3005E98 = sub_8126894;
+    sub_80A0FBC(taskId);
+}
+
+void FieldUseFunc_TmCase(u8 taskId)
+{
+    if (gTasks[taskId].data[3] == 0)
+    {
+        sub_8108EE0(InitTMCaseFromBag);
+        sub_8108B50(taskId);
+    }
+    else
+    {
+        sub_80CCB68();
+        fade_screen(1, 0);
+        gTasks[taskId].func = Task_InitTMCaseFromField;
+    }
+}
+
+void InitTMCaseFromBag(void)
+{
+    InitTMCase(0, ReturnToBagFromKeyItem, 0);
+}
+
+void Task_InitTMCaseFromField(u8 taskId)
+{
+    if (!gPaletteFade.active)
+    {
+        CleanupOverworldWindowsAndTilemaps();
+        sub_80A1184();
+        InitTMCase(0, CB2_ReturnToField, 1);
+        DestroyTask(taskId);
+    }
+}
+
+void FieldUseFunc_BerryPouch(u8 taskId)
+{
+    if (gTasks[taskId].data[3] == 0)
+    {
+        sub_8108EE0(InitBerryPouchFromBag);
+        sub_8108B50(taskId);
+    }
+    else
+    {
+        sub_80CCB68();
+        fade_screen(1, 0);
+        gTasks[taskId].func = Task_InitBerryPouchFromField;
+    }
+}
+
+void InitBerryPouchFromBag(void)
+{
+    InitBerryPouch(0, ReturnToBagFromKeyItem, 0);
+}
+
+void Task_InitBerryPouchFromField(u8 taskId)
+{
+    if (!gPaletteFade.active)
+    {
+        CleanupOverworldWindowsAndTilemaps();
+        sub_80A1184();
+        InitBerryPouch(0, CB2_ReturnToField, 1);
+        DestroyTask(taskId);
+    }
+}
+
+void BattleUseFunc_BerryPouch(u8 taskId)
+{
+    sub_8108EE0(InitBerryPouchFromBattle);
+    sub_8108B50(taskId);
+}
+
+void InitBerryPouchFromBattle(void)
+{
+    InitBerryPouch(4, sub_8107ECC, 0);
+}
+
+void FieldUseFunc_TeachyTv(u8 taskId)
+{
+    ItemUse_SetQuestLogEvent(4, NULL, gSpecialVar_ItemId, 0xFFFF);
+    if (gTasks[taskId].data[3] == 0)
+    {
+        sub_8108EE0(InitTeachyTvFromBag);
+        sub_8108B50(taskId);
+    }
+    else
+    {
+        sub_80CCB68();
+        fade_screen(1, 0);
+        gTasks[taskId].func = Task_InitTeachyTvFromField;
+    }
+}
+
+void InitTeachyTvFromBag(void)
+{
+    InitTeachyTvController(0, ReturnToBagFromKeyItem);
+}
+
+void Task_InitTeachyTvFromField(u8 taskId)
+{
+    if (!gPaletteFade.active)
+    {
+        CleanupOverworldWindowsAndTilemaps();
+        sub_80A1184();
+        InitTeachyTvController(0, CB2_ReturnToField);
+        DestroyTask(taskId);
+    }
+}
+
+void FieldUseFunc_SuperRepel(u8 taskId)
+{
+    if (VarGet(VAR_REPEL_STEP_COUNT) == 0)
+    {
+        PlaySE(SE_RU_GASYAN);
+        gTasks[taskId].func = sub_80A19E8;
+    }
+    else
+        // An earlier repel is still in effect
+        DisplayItemMessageInBag(taskId, 2, gUnknown_841659E, sub_810A1F8);
+}
+
+void sub_80A19E8(u8 taskId)
+{
+    if (!IsSEPlaying())
+    {
+        ItemUse_SetQuestLogEvent(4, NULL, gSpecialVar_ItemId, 0xFFFF);
+        VarSet(VAR_REPEL_STEP_COUNT, ItemId_GetHoldEffectParam(gSpecialVar_ItemId));
+        sub_80A1A44();
+        DisplayItemMessageInBag(taskId, 2, gStringVar4, sub_810A1F8);
+    }
+}
+
+void sub_80A1A44(void)
+{
+    RemoveBagItem(gSpecialVar_ItemId, 1);
+    sub_8108DC8(ItemId_GetPocket(gSpecialVar_ItemId));
+    sub_81089F4(ItemId_GetPocket(gSpecialVar_ItemId));
+    CopyItemName(gSpecialVar_ItemId, gStringVar2);
+    StringExpandPlaceholders(gStringVar4, gUnknown_841658C);
+}
+
+void FieldUseFunc_BlackFlute(u8 taskId)
+{
+    ItemUse_SetQuestLogEvent(4, NULL, gSpecialVar_ItemId, 0xFFFF);
+    if (gSpecialVar_ItemId == ITEM_WHITE_FLUTE)
+    {
+        FlagSet(FLAG_WHITE_FLUTE_ACTIVE);
+        FlagClear(FLAG_BLACK_FLUTE_ACTIVE);
+        CopyItemName(gSpecialVar_ItemId, gStringVar2);
+        StringExpandPlaceholders(gStringVar4, gUnknown_84165D2);
+        gTasks[taskId].func = sub_80A1B48;
+        gTasks[taskId].data[8] = 0;
+    }
+    else if (gSpecialVar_ItemId == ITEM_BLACK_FLUTE)
+    {
+        FlagSet(FLAG_BLACK_FLUTE_ACTIVE);
+        FlagClear(FLAG_WHITE_FLUTE_ACTIVE);
+        CopyItemName(gSpecialVar_ItemId, gStringVar2);
+        StringExpandPlaceholders(gStringVar4, gUnknown_8416600);
+        gTasks[taskId].func = sub_80A1B48;
+        gTasks[taskId].data[8] = 0;
+    }
+}
+
+void sub_80A1B48(u8 taskId)
+{
+    if (++gTasks[taskId].data[8] > 7)
+    {
+        PlaySE(SE_PN_ON);
+        DisplayItemMessageInBag(taskId, 2, gStringVar4, sub_810A1F8);
+    }
+}
+
+bool8 sub_80A1B8C(void)
+{
+    if (gMapHeader.escapeRope & 1)
+        return TRUE;
+    else
+        return FALSE;
+}
+
+void ItemUseOutOfBattle_EscapeRope(u8 taskId)
+{
+    if (sub_80A1B8C() == TRUE)
+    {
+        ItemUse_SetQuestLogEvent(4, NULL, gSpecialVar_ItemId, gMapHeader.regionMapSectionId);
+        sItemUseOnFieldCB = sub_80A1C08;
+        sub_80A103C(taskId);
+    }
+    else
+        sub_80A1110(taskId, gTasks[taskId].data[3]);
+}
+
+void sub_80A1C08(u8 taskId)
+{
+    sub_8054D70();
+    sub_80A1A44();
+    gTasks[taskId].data[0] = 0;
+    DisplayItemMessageOnField(taskId, 2, gStringVar4, sub_80A1C44);
+}
+
+void sub_80A1C44(u8 taskId)
+{
+    ResetInitialPlayerAvatarState();
+    sub_8085620();
+    DestroyTask(taskId);
+}
+
+void FieldUseFunc_TownMap(u8 taskId)
+{
+    if (gTasks[taskId].data[3] == 0)
+    {
+        sub_8108EE0(sub_80A1CAC);
+        sub_8108B50(taskId);
+    }
+    else
+    {
+        sub_80CCB68();
+        fade_screen(1, 0);
+        gTasks[taskId].func = sub_80A1CC0;
+    }
+}
+
+void sub_80A1CAC(void)
+{
+    sub_80BFF50(0, ReturnToBagFromKeyItem);
+}
+
+void sub_80A1CC0(u8 taskId)
+{
+    if (!gPaletteFade.active)
+    {
+        CleanupOverworldWindowsAndTilemaps();
+        sub_80A1184();
+        sub_80BFF50(0, CB2_ReturnToField);
+        DestroyTask(taskId);
+    }
+}
+
+void FieldUseFunc_FameChecker(u8 taskId)
+{
+    ItemUse_SetQuestLogEvent(4, NULL, gSpecialVar_ItemId, 0xFFFF);
+    if (gTasks[taskId].data[3] == 0)
+    {
+        sub_8108EE0(sub_80A1D58);
+        sub_8108B50(taskId);
+    }
+    else
+    {
+        sub_80CCB68();
+        fade_screen(1, 0);
+        gTasks[taskId].func = sub_80A1D68;
+    }
+}
+
+void sub_80A1D58(void)
+{
+    UseFameChecker(ReturnToBagFromKeyItem);
+}
+
+void sub_80A1D68(u8 taskId)
+{
+    if (!gPaletteFade.active)
+    {
+        CleanupOverworldWindowsAndTilemaps();
+        sub_80A1184();
+        UseFameChecker(CB2_ReturnToField);
+        DestroyTask(taskId);
+    }
+}
+
+void FieldUseFunc_VsSeeker(u8 taskId)
+{
+    if ((gMapHeader.mapType != MAP_TYPE_ROUTE
+      && gMapHeader.mapType != MAP_TYPE_TOWN
+      && gMapHeader.mapType != MAP_TYPE_CITY)
+     || (gSaveBlock1Ptr->location.mapGroup == MAP_GROUP(VIRIDIAN_FOREST)
+      && (gSaveBlock1Ptr->location.mapNum == MAP_NUM(VIRIDIAN_FOREST)
+       || gSaveBlock1Ptr->location.mapNum == MAP_NUM(MT_EMBER_EXTERIOR)
+       || gSaveBlock1Ptr->location.mapNum == MAP_NUM(THREE_ISLAND_BERRY_FOREST)
+       || gSaveBlock1Ptr->location.mapNum == MAP_NUM(SIX_ISLAND_PATTERN_BUSH))))
+    {
+        sub_80A1110(taskId, gTasks[taskId].data[3]);
+    }
+    else
+    {
+        sItemUseOnFieldCB = Task_VsSeeker_0;
+        sub_80A103C(taskId);
+    }
+}
+
+void sub_80A1E0C(u8 taskId)
+{
+    sub_80A112C(taskId);
+}
+
+void BattleUseFunc_PokeBallEtc(u8 taskId)
+{
+    if (!IsPlayerPartyAndPokemonStorageFull())
+    {
+        RemoveBagItem(gSpecialVar_ItemId, 1);
+        sub_8108CB4();
+        sub_8108B50(taskId);
+    }
+    else
+    {
+        DisplayItemMessageInBag(taskId, 2, gUnknown_8416631, sub_810A1F8);
+    }
+}
+
+void BattleUseFunc_PokeFlute(u8 taskId)
+{
+    sub_8108CB4();
+    sub_8108B50(taskId);
+}
+
+void BattleUseFunc_GuardSpec(u8 taskId)
+{
+    if (ExecuteTableBasedItemEffect(&gPlayerParty[gBattlerPartyIndexes[gBattlerInMenuId]], gSpecialVar_ItemId, gBattlerPartyIndexes[gBattlerInMenuId], 0))
+    {
+        DisplayItemMessageInBag(taskId, 2, gUnknown_84169DC, sub_810A1F8);
+    }
+    else
+    {
+        gTasks[taskId].data[8] = 0;
+        gTasks[taskId].func = sub_80A1EF4;
+    }
+}
+
+void sub_80A1EF4(u8 taskId)
+{
+    s16 * data = gTasks[taskId].data;
+
+    if (++data[8] > 7)
+    {
+        u16 itemId = gSpecialVar_ItemId;
+        PlaySE(SE_KAIFUKU);
+        RemoveBagItem(itemId, 1);
+        DisplayItemMessageInBag(taskId, 2, sub_8042DA4(itemId), sub_80A1F48);
+    }
+}
+
+void sub_80A1F48(u8 taskId)
+{
+    if (JOY_NEW(A_BUTTON) || JOY_NEW(B_BUTTON))
+    {
+        sub_8108CB4();
+        sub_8108B50(taskId);
+    }
+}
+
+void sub_80A1F78(u8 taskId)
+{
+    if (GetPocketByItemId(gSpecialVar_ItemId) == POCKET_BERRY_POUCH)
+    {
+        sub_813D934(sub_81279E0);
+        sub_813D808(taskId);
+    }
+    else
+    {
+        sub_8108EE0(sub_81279E0);
+        sub_8108B50(taskId);
+    }
+}
+
+void BattleUseFunc_Medicine(u8 taskId)
+{
+    gUnknown_3005E98 = ItemUseCB_Medicine;
+    sub_80A1F78(taskId);
+}
+
+void sub_80A1FD8(u8 taskId)
+{
+    gUnknown_3005E98 = sub_8126894;
+    sub_80A1F78(taskId);
+}
+
+void BattleUseFunc_Ether(u8 taskId)
+{
+    gUnknown_3005E98 = sub_81256F8;
+    sub_80A1F78(taskId);
+}
+
+void BattleUseFunc_PokeDoll(u8 taskId)
+{
+    if (!(gBattleTypeFlags & BATTLE_TYPE_TRAINER))
+    {
+        sub_80A1A44();
+        ItemUse_SetQuestLogEvent(4, 0, gSpecialVar_ItemId, 0xFFFF);
+        DisplayItemMessageInBag(taskId, 2, gStringVar4, sub_8108B50);
+    }
+    else
+        sub_80A1110(taskId, 0);
+}
+
+void ItemUseOutOfBattle_EnigmaBerry(u8 taskId)
+{
+    switch (GetItemEffectType(gSpecialVar_ItemId) - 1)
+    {
+    case 1:
+    case 2:
+    case 3:
+    case 4:
+    case 5:
+    case 6:
+    case 10:
+    case 11:
+    case 12:
+    case 13:
+    case 14:
+    case 15:
+    case 16:
+        gTasks[taskId].data[4] = 1;
+        FieldUseFunc_Medicine(taskId);
+        break;
+    case 9:
+        gTasks[taskId].data[4] = 1;
+        FieldUseFunc_SacredAsh(taskId);
+        break;
+    case 0:
+        gTasks[taskId].data[4] = 1;
+        FieldUseFunc_RareCandy(taskId);
+        break;
+    case 18:
+    case 19:
+        gTasks[taskId].data[4] = 1;
+        FieldUseFunc_PpUp(taskId);
+        break;
+    case 20:
+        gTasks[taskId].data[4] = 1;
+        FieldUseFunc_Ether(taskId);
+        break;
+    default:
+        gTasks[taskId].data[4] = 4;
+        FieldUseFunc_OakStopsYou(taskId);
+    }
+}
+
+void ItemUseInBattle_EnigmaBerry(u8 taskId)
+{
+    switch (GetItemEffectType(gSpecialVar_ItemId))
+    {
+    case 0:
+        BattleUseFunc_GuardSpec(taskId);
+        break;
+    case 2:
+    case 3:
+    case 4:
+    case 5:
+    case 6:
+    case 7:
+    case 8:
+    case 9:
+    case 11:
+        BattleUseFunc_Medicine(taskId);
+        break;
+    case 21:
+        BattleUseFunc_Ether(taskId);
+        break;
+    default:
+        FieldUseFunc_OakStopsYou(taskId);
+    }
+}
+
+void FieldUseFunc_OakStopsYou(u8 taskId)
+{
+    if (GetPocketByItemId(gSpecialVar_ItemId) == POCKET_BERRY_POUCH)
+    {
+        StringExpandPlaceholders(gStringVar4, gUnknown_8416425);
+        sub_813EB20(taskId, 4, gStringVar4, sub_813E2B8);
+    }
+    else
+        sub_80A1110(taskId, gTasks[taskId].data[3]);
+}
+
+void ItemUse_SetQuestLogEvent(u8 eventId, struct Pokemon * pokemon, u16 itemId, u16 param)
+{
+    struct UnkStruct_ItemUseQuestLog
+    {
+        u16 itemId;
+        u16 unk2;
+        u16 species;
+        u16 param;
+    } * questLog = Alloc(sizeof(*questLog));
+
+    questLog->itemId = itemId;
+    questLog->param = param;
+    if (pokemon != NULL)
+        questLog->species = GetMonData(pokemon, MON_DATA_SPECIES2);
+    else
+        questLog->species = 0xFFFF;
+    sub_8113550(eventId, (void *)questLog);
+    Free(questLog);
+}
diff --git a/src/pokemon.c b/src/pokemon.c
index 3a9fdbf04..75250565a 100644
--- a/src/pokemon.c
+++ b/src/pokemon.c
@@ -4526,7 +4526,7 @@ void sub_8042D50(int stat)
     BattleStringExpandPlaceholdersToDisplayedString(BattleText_UnknownString3);
 }
 
-u8 *sub_8042DA4(u16 itemId)
+const u8 *sub_8042DA4(u16 itemId)
 {
     int i;
     const u8 *itemEffect;
diff --git a/src/teachy_tv.c b/src/teachy_tv.c
index 711a7f765..efffe2840 100644
--- a/src/teachy_tv.c
+++ b/src/teachy_tv.c
@@ -736,7 +736,7 @@ static void TeachyTvOptionListController(u8 taskId)
     {
         input = ListMenuHandleInput(data[0]);
         ListMenuGetScrollAndRow(data[0], &sStaticResources.scrollOffset, &sStaticResources.selectedRow);
-        if ((JOY_NEW(SELECT_BUTTON) && sStaticResources.callback != UseFameCheckerFromMenu))
+        if ((JOY_NEW(SELECT_BUTTON) && sStaticResources.callback != ReturnToBagFromKeyItem))
         {
             PlaySE(SE_SELECT);
             TeachyTvQuitBeginFade(taskId);