item_use: through sub_80A16D0

15 files changed, 158 insertions, 346 deletions

diff --git a/asm/berry_crush_2.s b/asm/berry_crush_2.s
index f5c170bdc..172724d0f 100644
--- a/asm/berry_crush_2.s
+++ b/asm/berry_crush_2.s
@@ -2758,7 +2758,7 @@ _0814D03C:
 	movs r3, 0x6
 	bl ConvertIntToDecimalStringN
 	ldr r4, _0814D080 @ =gStringVar2
-	bl sub_815EFA0
+	bl GetBerryPowder
 	adds r1, r0, 0
 	adds r0, r4, 0
 	movs r2, 0
diff --git a/asm/item_menu.s b/asm/item_menu.s
index 82ddfdae4..1db1f73b8 100644
--- a/asm/item_menu.s
+++ b/asm/item_menu.s
@@ -2150,8 +2150,8 @@ _08108E58:
 	bx r0
 	thumb_func_end sub_8108E54
 
-	thumb_func_start sub_8108E70
-sub_8108E70: @ 8108E70
+	thumb_func_start DisplayItemMessageInBag
+DisplayItemMessageInBag: @ 8108E70
 	push {r4-r6,lr}
 	mov r6, r9
 	mov r5, r8
@@ -2202,7 +2202,7 @@ sub_8108E70: @ 8108E70
 	bx r0
 	.align 2, 0
 _08108EDC: .4byte gTasks+0x8
-	thumb_func_end sub_8108E70
+	thumb_func_end DisplayItemMessageInBag
 
 	thumb_func_start sub_8108EE0
 sub_8108EE0: @ 8108EE0
@@ -4376,7 +4376,7 @@ sub_810A0A8: @ 810A0A8
 	ldr r3, _0810A11C @ =sub_810A1D0
 	adds r0, r4, 0
 	movs r1, 0x2
-	bl sub_8108E70
+	bl DisplayItemMessageInBag
 	b _0810A166
 	.align 2, 0
 _0810A110: .4byte gTasks+0x8
@@ -4430,7 +4430,7 @@ sub_810A170: @ 810A170
 	ldr r2, _0810A184 @ =gText_ThereIsNoPokemon
 	ldr r3, _0810A188 @ =sub_810A1D0
 	movs r1, 0x2
-	bl sub_8108E70
+	bl DisplayItemMessageInBag
 	pop {r0}
 	bx r0
 	.align 2, 0
@@ -4456,7 +4456,7 @@ sub_810A18C: @ 810A18C
 	adds r0, r4, 0
 	movs r1, 0x2
 	adds r2, r5, 0
-	bl sub_8108E70
+	bl DisplayItemMessageInBag
 	pop {r4,r5}
 	pop {r0}
 	bx r0
@@ -4697,7 +4697,7 @@ sub_810A370: @ 810A370
 	ldr r3, _0810A3C8 @ =sub_810A1D0
 	adds r0, r5, 0
 	movs r1, 0x2
-	bl sub_8108E70
+	bl DisplayItemMessageInBag
 	b _0810A426
 	.align 2, 0
 _0810A3BC: .4byte gTasks+0x8
@@ -4826,7 +4826,7 @@ sub_810A468: @ 810A468
 	ldr r3, _0810A4C0 @ =sub_810A1D0
 	adds r0, r5, 0
 	movs r1, 0x2
-	bl sub_8108E70
+	bl DisplayItemMessageInBag
 	b _0810A51E
 	.align 2, 0
 _0810A4B4: .4byte gTasks+0x8
@@ -4981,7 +4981,7 @@ _0810A5B4:
 	ldr r3, _0810A5F4 @ =sub_810A1F8
 	adds r0, r5, 0
 	adds r2, r4, 0
-	bl sub_8108E70
+	bl DisplayItemMessageInBag
 	b _0810A63E
 	.align 2, 0
 _0810A5E8: .4byte gStringVar1
@@ -5019,7 +5019,7 @@ _0810A618:
 	ldr r3, _0810A650 @ =sub_810A770
 	adds r0, r7, 0
 	adds r2, r4, 0
-	bl sub_8108E70
+	bl DisplayItemMessageInBag
 _0810A63E:
 	pop {r4-r7}
 	pop {r0}
@@ -5112,7 +5112,7 @@ sub_810A690: @ 810A690
 	ldr r3, _0810A708 @ =sub_810A70C
 	adds r0, r5, 0
 	adds r2, r4, 0
-	bl sub_8108E70
+	bl DisplayItemMessageInBag
 	pop {r4-r6}
 	pop {r0}
 	bx r0
@@ -5426,7 +5426,7 @@ sub_810A940: @ 810A940
 	adds r0, r5, 0
 	movs r1, 0x2
 	adds r2, r4, 0
-	bl sub_8108E70
+	bl DisplayItemMessageInBag
 	pop {r4-r6}
 	pop {r0}
 	bx r0
@@ -5803,7 +5803,7 @@ _0810ACEC:
 	ldr r3, _0810AD0C @ =sub_810A1D0
 	adds r0, r4, 0
 	movs r1, 0x2
-	bl sub_8108E70
+	bl DisplayItemMessageInBag
 _0810ACF8:
 	add sp, 0x14
 	pop {r3,r4}
diff --git a/asm/item_use.s b/asm/item_use.s
index 669eba852..e6b649da8 100644
--- a/asm/item_use.s
+++ b/asm/item_use.s
@@ -5,308 +5,6 @@
 
 	.text
 
-	thumb_func_start FieldUseFunc_CoinCase
-FieldUseFunc_CoinCase: @ 80A1460
-	push {r4,r5,lr}
-	lsls r0, 24
-	lsrs r5, r0, 24
-	ldr r4, _080A14B4 @ =gStringVar1
-	bl GetCoins
-	adds r1, r0, 0
-	lsls r1, 16
-	lsrs r1, 16
-	adds r0, r4, 0
-	movs r2, 0
-	movs r3, 0x4
-	bl ConvertIntToDecimalStringN
-	ldr r4, _080A14B8 @ =gStringVar4
-	ldr r1, _080A14BC @ =gUnknown_8416537
-	adds r0, r4, 0
-	bl StringExpandPlaceholders
-	ldr r0, _080A14C0 @ =gSpecialVar_ItemId
-	ldrh r2, [r0]
-	ldr r3, _080A14C4 @ =0x0000ffff
-	movs r0, 0x4
-	movs r1, 0
-	bl ItemUse_SetQuestLogEvent
-	ldr r1, _080A14C8 @ =gTasks
-	lsls r0, r5, 2
-	adds r0, r5
-	lsls r0, 3
-	adds r0, r1
-	movs r1, 0xE
-	ldrsh r0, [r0, r1]
-	cmp r0, 0
-	bne _080A14D0
-	ldr r3, _080A14CC @ =sub_810A1F8
-	adds r0, r5, 0
-	movs r1, 0x2
-	adds r2, r4, 0
-	bl sub_8108E70
-	b _080A14DC
-	.align 2, 0
-_080A14B4: .4byte gStringVar1
-_080A14B8: .4byte gStringVar4
-_080A14BC: .4byte gUnknown_8416537
-_080A14C0: .4byte gSpecialVar_ItemId
-_080A14C4: .4byte 0x0000ffff
-_080A14C8: .4byte gTasks
-_080A14CC: .4byte sub_810A1F8
-_080A14D0:
-	ldr r3, _080A14E4 @ =sub_80A112C
-	adds r0, r5, 0
-	movs r1, 0x2
-	adds r2, r4, 0
-	bl DisplayItemMessageOnField
-_080A14DC:
-	pop {r4,r5}
-	pop {r0}
-	bx r0
-	.align 2, 0
-_080A14E4: .4byte sub_80A112C
-	thumb_func_end FieldUseFunc_CoinCase
-
-	thumb_func_start FieldUseFunc_PowderJar
-FieldUseFunc_PowderJar: @ 80A14E8
-	push {r4,r5,lr}
-	lsls r0, 24
-	lsrs r5, r0, 24
-	ldr r4, _080A1538 @ =gStringVar1
-	bl sub_815EFA0
-	adds r1, r0, 0
-	adds r0, r4, 0
-	movs r2, 0
-	movs r3, 0x5
-	bl ConvertIntToDecimalStringN
-	ldr r4, _080A153C @ =gStringVar4
-	ldr r1, _080A1540 @ =gUnknown_8416644
-	adds r0, r4, 0
-	bl StringExpandPlaceholders
-	ldr r0, _080A1544 @ =gSpecialVar_ItemId
-	ldrh r2, [r0]
-	ldr r3, _080A1548 @ =0x0000ffff
-	movs r0, 0x4
-	movs r1, 0
-	bl ItemUse_SetQuestLogEvent
-	ldr r1, _080A154C @ =gTasks
-	lsls r0, r5, 2
-	adds r0, r5
-	lsls r0, 3
-	adds r0, r1
-	movs r1, 0xE
-	ldrsh r0, [r0, r1]
-	cmp r0, 0
-	bne _080A1554
-	ldr r3, _080A1550 @ =sub_810A1F8
-	adds r0, r5, 0
-	movs r1, 0x2
-	adds r2, r4, 0
-	bl sub_8108E70
-	b _080A1560
-	.align 2, 0
-_080A1538: .4byte gStringVar1
-_080A153C: .4byte gStringVar4
-_080A1540: .4byte gUnknown_8416644
-_080A1544: .4byte gSpecialVar_ItemId
-_080A1548: .4byte 0x0000ffff
-_080A154C: .4byte gTasks
-_080A1550: .4byte sub_810A1F8
-_080A1554:
-	ldr r3, _080A1568 @ =sub_80A112C
-	adds r0, r5, 0
-	movs r1, 0x2
-	adds r2, r4, 0
-	bl DisplayItemMessageOnField
-_080A1560:
-	pop {r4,r5}
-	pop {r0}
-	bx r0
-	.align 2, 0
-_080A1568: .4byte sub_80A112C
-	thumb_func_end FieldUseFunc_PowderJar
-
-	thumb_func_start FieldUseFunc_PokeFlute
-FieldUseFunc_PokeFlute: @ 80A156C
-	push {r4-r6,lr}
-	lsls r0, 24
-	lsrs r5, r0, 24
-	movs r6, 0
-	movs r4, 0
-	b _080A1598
-_080A1578:
-	movs r0, 0x64
-	muls r0, r4
-	ldr r1, _080A15D0 @ =gPlayerParty
-	adds r0, r1
-	movs r1, 0x11
-	adds r2, r4, 0
-	movs r3, 0
-	bl ExecuteTableBasedItemEffect
-	lsls r0, 24
-	cmp r0, 0
-	bne _080A1592
-	movs r6, 0x1
-_080A1592:
-	adds r0, r4, 0x1
-	lsls r0, 24
-	lsrs r4, r0, 24
-_080A1598:
-	bl CalculatePlayerPartyCount
-	lsls r0, 24
-	lsrs r0, 24
-	cmp r4, r0
-	bcc _080A1578
-	cmp r6, 0
-	beq _080A1600
-	ldr r0, _080A15D4 @ =gSpecialVar_ItemId
-	ldrh r2, [r0]
-	ldr r3, _080A15D8 @ =0x0000ffff
-	movs r0, 0x4
-	movs r1, 0
-	bl ItemUse_SetQuestLogEvent
-	ldr r1, _080A15DC @ =gTasks
-	lsls r0, r5, 2
-	adds r0, r5
-	lsls r0, 3
-	adds r0, r1
-	movs r1, 0xE
-	ldrsh r0, [r0, r1]
-	cmp r0, 0
-	bne _080A15E8
-	ldr r2, _080A15E0 @ =gUnknown_8416690
-	ldr r3, _080A15E4 @ =sub_80A1648
-	b _080A1616
-	.align 2, 0
-_080A15D0: .4byte gPlayerParty
-_080A15D4: .4byte gSpecialVar_ItemId
-_080A15D8: .4byte 0x0000ffff
-_080A15DC: .4byte gTasks
-_080A15E0: .4byte gUnknown_8416690
-_080A15E4: .4byte sub_80A1648
-_080A15E8:
-	ldr r2, _080A15F8 @ =gUnknown_8416690
-	ldr r3, _080A15FC @ =sub_80A1648
-	adds r0, r5, 0
-	movs r1, 0x2
-	bl DisplayItemMessageOnField
-	b _080A1638
-	.align 2, 0
-_080A15F8: .4byte gUnknown_8416690
-_080A15FC: .4byte sub_80A1648
-_080A1600:
-	ldr r0, _080A1620 @ =gTasks
-	lsls r1, r5, 2
-	adds r1, r5
-	lsls r1, 3
-	adds r1, r0
-	movs r2, 0xE
-	ldrsh r0, [r1, r2]
-	cmp r0, 0
-	bne _080A162C
-	ldr r2, _080A1624 @ =gUnknown_841665C
-	ldr r3, _080A1628 @ =sub_810A1F8
-_080A1616:
-	adds r0, r5, 0
-	movs r1, 0x2
-	bl sub_8108E70
-	b _080A1638
-	.align 2, 0
-_080A1620: .4byte gTasks
-_080A1624: .4byte gUnknown_841665C
-_080A1628: .4byte sub_810A1F8
-_080A162C:
-	ldr r2, _080A1640 @ =gUnknown_841665C
-	ldr r3, _080A1644 @ =sub_80A112C
-	adds r0, r5, 0
-	movs r1, 0x2
-	bl DisplayItemMessageOnField
-_080A1638:
-	pop {r4-r6}
-	pop {r0}
-	bx r0
-	.align 2, 0
-_080A1640: .4byte gUnknown_841665C
-_080A1644: .4byte sub_80A112C
-	thumb_func_end FieldUseFunc_PokeFlute
-
-	thumb_func_start sub_80A1648
-sub_80A1648: @ 80A1648
-	push {r4,lr}
-	adds r4, r0, 0
-	lsls r4, 24
-	lsrs r4, 24
-	movs r0, 0xB
-	bl PlayFanfareByFanfareNum
-	ldr r1, _080A166C @ =gTasks
-	lsls r0, r4, 2
-	adds r0, r4
-	lsls r0, 3
-	adds r0, r1
-	ldr r1, _080A1670 @ =sub_80A1674
-	str r1, [r0]
-	pop {r4}
-	pop {r0}
-	bx r0
-	.align 2, 0
-_080A166C: .4byte gTasks
-_080A1670: .4byte sub_80A1674
-	thumb_func_end sub_80A1648
-
-	thumb_func_start sub_80A1674
-sub_80A1674: @ 80A1674
-	push {r4,r5,lr}
-	lsls r0, 24
-	lsrs r4, r0, 24
-	adds r5, r4, 0
-	movs r0, 0
-	bl WaitFanfare
-	lsls r0, 24
-	cmp r0, 0
-	beq _080A16C0
-	ldr r0, _080A16A8 @ =gTasks
-	lsls r1, r4, 2
-	adds r1, r4
-	lsls r1, 3
-	adds r1, r0
-	movs r2, 0xE
-	ldrsh r0, [r1, r2]
-	cmp r0, 0
-	bne _080A16B4
-	ldr r2, _080A16AC @ =gUnknown_84166A7
-	ldr r3, _080A16B0 @ =sub_810A1F8
-	adds r0, r4, 0
-	movs r1, 0x2
-	bl sub_8108E70
-	b _080A16C0
-	.align 2, 0
-_080A16A8: .4byte gTasks
-_080A16AC: .4byte gUnknown_84166A7
-_080A16B0: .4byte sub_810A1F8
-_080A16B4:
-	ldr r2, _080A16C8 @ =gUnknown_84166A7
-	ldr r3, _080A16CC @ =sub_80A112C
-	adds r0, r5, 0
-	movs r1, 0x2
-	bl DisplayItemMessageOnField
-_080A16C0:
-	pop {r4,r5}
-	pop {r0}
-	bx r0
-	.align 2, 0
-_080A16C8: .4byte gUnknown_84166A7
-_080A16CC: .4byte sub_80A112C
-	thumb_func_end sub_80A1674
-
-	thumb_func_start sub_80A16D0
-sub_80A16D0: @ 80A16D0
-	push {lr}
-	lsls r0, 24
-	lsrs r0, 24
-	bl sub_80A0FBC
-	pop {r0}
-	bx r0
-	thumb_func_end sub_80A16D0
-
 	thumb_func_start FieldUseFunc_OpenPartyMenu
 FieldUseFunc_OpenPartyMenu: @ 80A16E0
 	push {lr}
@@ -371,8 +69,8 @@ _080A1748: .4byte gUnknown_3005E98
 _080A174C: .4byte dp05_rare_candy
 	thumb_func_end FieldUseFunc_RareCandy
 
-	thumb_func_start FieldUseFunc_SunStone
-FieldUseFunc_SunStone: @ 80A1750
+	thumb_func_start FieldUseFunc_EvoItem
+FieldUseFunc_EvoItem: @ 80A1750
 	push {lr}
 	lsls r0, 24
 	lsrs r0, 24
@@ -385,7 +83,7 @@ FieldUseFunc_SunStone: @ 80A1750
 	.align 2, 0
 _080A1764: .4byte gUnknown_3005E98
 _080A1768: .4byte sub_8126B60
-	thumb_func_end FieldUseFunc_SunStone
+	thumb_func_end FieldUseFunc_EvoItem
 
 	thumb_func_start FieldUseFunc_SacredAsh
 FieldUseFunc_SacredAsh: @ 80A176C
@@ -702,7 +400,7 @@ _080A19CC:
 	ldr r3, _080A19E4 @ =sub_810A1F8
 	adds r0, r4, 0
 	movs r1, 0x2
-	bl sub_8108E70
+	bl DisplayItemMessageInBag
 _080A19D8:
 	pop {r4}
 	pop {r0}
@@ -740,7 +438,7 @@ sub_80A19E8: @ 80A19E8
 	ldr r3, _080A1A40 @ =sub_810A1F8
 	adds r0, r6, 0
 	movs r1, 0x2
-	bl sub_8108E70
+	bl DisplayItemMessageInBag
 _080A1A2A:
 	pop {r4-r6}
 	pop {r0}
@@ -884,7 +582,7 @@ sub_80A1B48: @ 80A1B48
 	ldr r3, _080A1B88 @ =sub_810A1F8
 	adds r0, r4, 0
 	movs r1, 0x2
-	bl sub_8108E70
+	bl DisplayItemMessageInBag
 _080A1B78:
 	pop {r4}
 	pop {r0}
@@ -1254,7 +952,7 @@ _080A1E48:
 	ldr r3, _080A1E60 @ =sub_810A1F8
 	adds r0, r4, 0
 	movs r1, 0x2
-	bl sub_8108E70
+	bl DisplayItemMessageInBag
 _080A1E54:
 	pop {r4}
 	pop {r0}
@@ -1307,7 +1005,7 @@ BattleUseFunc_GuardSpec: @ 80A1E7C
 	ldr r3, _080A1ED0 @ =sub_810A1F8
 	adds r0, r4, 0
 	movs r1, 0x2
-	bl sub_8108E70
+	bl DisplayItemMessageInBag
 	b _080A1EE4
 	.align 2, 0
 _080A1EBC: .4byte gBattlerPartyIndexes
@@ -1364,7 +1062,7 @@ sub_80A1EF4: @ 80A1EF4
 	ldr r3, _080A1F44 @ =sub_80A1F48
 	adds r0, r5, 0
 	movs r1, 0x2
-	bl sub_8108E70
+	bl DisplayItemMessageInBag
 _080A1F36:
 	pop {r4,r5}
 	pop {r0}
@@ -1505,7 +1203,7 @@ BattleUseFunc_PokeDoll: @ 80A2010
 	ldr r3, _080A2054 @ =sub_8108B50
 	adds r0, r4, 0
 	movs r1, 0x2
-	bl sub_8108E70
+	bl DisplayItemMessageInBag
 	b _080A2060
 	.align 2, 0
 _080A2044: .4byte gBattleTypeFlags
diff --git a/asm/party_menu.s b/asm/party_menu.s
index d873fb9aa..be6521bdb 100644
--- a/asm/party_menu.s
+++ b/asm/party_menu.s
@@ -1274,7 +1274,7 @@ _0811F47C:
 	cmp r0, 0x3
 	bne _0811F492
 	adds r0, r4, 0
-	bl sub_80A1150
+	bl GetItemCompatibilityRule
 	lsls r0, 24
 	lsrs r0, 24
 	cmp r0, 0x1
@@ -12644,7 +12644,7 @@ sub_8124DE0: @ 8124DE0
 	push {r4,lr}
 	ldr r4, _08124E0C @ =gSpecialVar_ItemId
 	ldrh r0, [r4]
-	bl sub_80A1150
+	bl GetItemCompatibilityRule
 	lsls r0, 24
 	lsrs r0, 24
 	cmp r0, 0x2
diff --git a/asm/pokemon_special_anim.s b/asm/pokemon_special_anim.s
index 8a14c09c3..94d451a73 100644
--- a/asm/pokemon_special_anim.s
+++ b/asm/pokemon_special_anim.s
@@ -558,7 +558,7 @@ _0811C9AA:
 	adds r0, r4, 0
 	adds r0, 0x96
 	ldrh r0, [r0]
-	bl sub_80A1150
+	bl GetItemCompatibilityRule
 	lsls r0, 24
 	lsrs r0, 24
 	cmp r0, 0x2
diff --git a/include/berry_powder.h b/include/berry_powder.h
new file mode 100644
index 000000000..89582aacc
--- /dev/null
+++ b/include/berry_powder.h
@@ -0,0 +1,6 @@
+#ifndef GUARD_BERRY_POWDER_H
+#define GUARD_BERRY_POWDER_H
+
+u32 GetBerryPowder(void);
+
+#endif //GUARD_BERRY_POWDER_H
diff --git a/include/constants/fanfares.h b/include/constants/fanfares.h
new file mode 100644
index 000000000..21d3af79c
--- /dev/null
+++ b/include/constants/fanfares.h
@@ -0,0 +1,22 @@
+#ifndef GUARD_CONSTANTS_FANFARES_H
+#define GUARD_CONSTANTS_FANFARES_H
+
+enum Fanfares
+{
+    FANFARE_00,
+    FANFARE_01,
+    FANFARE_02,
+    FANFARE_03,
+    FANFARE_04,
+    FANFARE_05,
+    FANFARE_06,
+    FANFARE_07,
+    FANFARE_08,
+    FANFARE_09,
+    FANFARE_10,
+    FANFARE_POKEFLUTE,
+    FANFARE_KEY_ITEM,
+    FANFARE_DEX_EVAL
+};
+
+#endif //GUARD_CONSTANTS_FANFARES_H
diff --git a/include/item_menu.h b/include/item_menu.h
index b4815d164..e8ccfcbd9 100644
--- a/include/item_menu.h
+++ b/include/item_menu.h
@@ -2,6 +2,7 @@
 #define GUARD_ITEM_MENU_H
 
 #include "global.h"
+#include "task.h"
 
 // Exported type declarations
 
@@ -31,7 +32,7 @@ void ItemMenu_MoveItemSlotToNewPositionInArray(struct ItemSlot * slots, int pos1
 void sub_8108B50(u8 taskId);
 void sub_8108CB4(void);
 void sub_8108EE0(void (*)(void));
-void sub_8108E70(u8, u8, const u8 *, void (*)(u8));
+void DisplayItemMessageInBag(u8 taskId, u8 bgId, const u8 * string, TaskFunc followUpFunc);
 void sub_810A1F8(u8 taskId);
 
 #endif //GUARD_ITEM_MENU_H
diff --git a/include/item_use.h b/include/item_use.h
index ca22a56d0..d8356d7c1 100644
--- a/include/item_use.h
+++ b/include/item_use.h
@@ -16,7 +16,7 @@ void FieldUseFunc_OpenPartyMenu(u8 taskId);
 void FieldUseFunc_Ether(u8 taskId);
 void FieldUseFunc_PpUp(u8 taskId);
 void FieldUseFunc_RareCandy(u8 taskId);
-void FieldUseFunc_SunStone(u8 taskId);
+void FieldUseFunc_EvoItem(u8 taskId);
 void FieldUseFunc_SacredAsh(u8 taskId);
 void FieldUseFunc_TmCase(u8 taskId);
 void FieldUseFunc_BerryPouch(u8 taskId);
diff --git a/include/strings.h b/include/strings.h
index 8b98abb20..23562d4b9 100644
--- a/include/strings.h
+++ b/include/strings.h
@@ -163,6 +163,11 @@ extern const u8 gText_ReturnToPC[];
 
 extern const u8 gUnknown_8416425[];
 extern const u8 gUnknown_8416451[];
+extern const u8 gUnknown_8416537[];
+extern const u8 gUnknown_8416644[];
+extern const u8 gUnknown_841665C[];
+extern const u8 gUnknown_8416690[];
+extern const u8 gUnknown_84166A7[];
 
 extern const u8 gUnknown_84162BD[];
 
diff --git a/ld_script.txt b/ld_script.txt
index 3079bca5d..62ac8c008 100644
--- a/ld_script.txt
+++ b/ld_script.txt
@@ -285,7 +285,7 @@ SECTIONS {
         src/ss_anne.o(.text);
         src/cereader_tool.o(.text);
         src/trainer_tower.o(.text);
-        src/unk_815EDDC.o(.text);
+        src/berry_powder.o(.text);
         src/unk_815F138.o(.text);
         src/berry_fix_program.o(.text);
     } =0
diff --git a/src/unk_815EDDC.c b/src/berry_powder.c
index 669bb2ddb..b3069d697 100644
--- a/src/unk_815EDDC.c
+++ b/src/berry_powder.c
@@ -84,7 +84,7 @@ bool8 sub_815EF5C(void)
     }
 }
 
-u32 sub_815EFA0(void)
+u32 GetBerryPowder(void)
 {
     return sub_815EE3C(&gSaveBlock2Ptr->berryCrush.berryPowderAmount);
 }
@@ -104,7 +104,7 @@ void sub_815F014(u8 windowId, u16 baseBlock, u8 palette, u32 powder)
 
 void sub_815F070(void)
 {
-    sub_815EFBC(gUnknown_203F464, sub_815EFA0(), 39, 12, 0);
+    sub_815EFBC(gUnknown_203F464, GetBerryPowder(), 39, 12, 0);
 }
 
 void sub_815F094(void)
@@ -120,7 +120,7 @@ void sub_815F094(void)
         FillWindowPixelBuffer(gUnknown_203F464, 0);
         PutWindowTilemap(gUnknown_203F464);
         TextWindow_SetStdFrame0_WithPal(gUnknown_203F464, 0x21D, 0xD0);
-        sub_815F014(gUnknown_203F464, 0x21D, 0xD, sub_815EFA0());
+        sub_815F014(gUnknown_203F464, 0x21D, 0xD, GetBerryPowder());
     }
 }
 
diff --git a/src/data/items.json b/src/data/items.json
index 0f5aa5f19..8d176df3d 100644
--- a/src/data/items.json
+++ b/src/data/items.json
@@ -1499,7 +1499,7 @@
       "exitsBagOnUse": 0,
       "pocket": "POCKET_ITEMS",
       "type": 1,
-      "fieldUseFunc": "FieldUseFunc_SunStone",
+      "fieldUseFunc": "FieldUseFunc_EvoItem",
       "battleUsage": 0,
       "battleUseFunc": "NULL",
       "secondaryId": 0
@@ -1515,7 +1515,7 @@
       "exitsBagOnUse": 0,
       "pocket": "POCKET_ITEMS",
       "type": 1,
-      "fieldUseFunc": "FieldUseFunc_SunStone",
+      "fieldUseFunc": "FieldUseFunc_EvoItem",
       "battleUsage": 0,
       "battleUseFunc": "NULL",
       "secondaryId": 0
@@ -1531,7 +1531,7 @@
       "exitsBagOnUse": 0,
       "pocket": "POCKET_ITEMS",
       "type": 1,
-      "fieldUseFunc": "FieldUseFunc_SunStone",
+      "fieldUseFunc": "FieldUseFunc_EvoItem",
       "battleUsage": 0,
       "battleUseFunc": "NULL",
       "secondaryId": 0
@@ -1547,7 +1547,7 @@
       "exitsBagOnUse": 0,
       "pocket": "POCKET_ITEMS",
       "type": 1,
-      "fieldUseFunc": "FieldUseFunc_SunStone",
+      "fieldUseFunc": "FieldUseFunc_EvoItem",
       "battleUsage": 0,
       "battleUseFunc": "NULL",
       "secondaryId": 0
@@ -1563,7 +1563,7 @@
       "exitsBagOnUse": 0,
       "pocket": "POCKET_ITEMS",
       "type": 1,
-      "fieldUseFunc": "FieldUseFunc_SunStone",
+      "fieldUseFunc": "FieldUseFunc_EvoItem",
       "battleUsage": 0,
       "battleUseFunc": "NULL",
       "secondaryId": 0
@@ -1579,7 +1579,7 @@
       "exitsBagOnUse": 0,
       "pocket": "POCKET_ITEMS",
       "type": 1,
-      "fieldUseFunc": "FieldUseFunc_SunStone",
+      "fieldUseFunc": "FieldUseFunc_EvoItem",
       "battleUsage": 0,
       "battleUseFunc": "NULL",
       "secondaryId": 0
diff --git a/src/item_use.c b/src/item_use.c
index 66658b6eb..5ce0792de 100644
--- a/src/item_use.c
+++ b/src/item_use.c
@@ -1,6 +1,8 @@
 #include "global.h"
 #include "berry_pouch.h"
+#include "berry_powder.h"
 #include "bike.h"
+#include "coins.h"
 #include "event_data.h"
 #include "field_fadetransition.h"
 #include "field_map_obj_helpers.h"
@@ -9,6 +11,7 @@
 #include "fieldmap.h"
 #include "item.h"
 #include "item_menu.h"
+#include "item_use.h"
 #include "mail.h"
 #include "map_obj_80688E4.h"
 #include "map_obj_lock.h"
@@ -20,8 +23,10 @@
 #include "string_util.h"
 #include "strings.h"
 #include "task.h"
+#include "constants/fanfares.h"
 #include "constants/flags.h"
 #include "constants/items.h"
+#include "constants/moves.h"
 #include "constants/songs.h"
 
 EWRAM_DATA void (*sItemUseOnFieldCB)(u8 taskId) = NULL;
@@ -35,8 +40,10 @@ void sub_80A1208(void);
 void ItemUseOnFieldCB_Bicycle(u8 taskId);
 bool8 ItemUseCheckFunc_Rod(void);
 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 FieldUseFunc_SunStone(u8 taskId);
 
 extern void (*const gUnknown_83E2954[])(void);
 
@@ -90,7 +97,7 @@ void sub_80A10C4(u8 taskId, bool8 a1, u8 a2, const u8 * str)
 {
     StringExpandPlaceholders(gStringVar4, str);
     if (a1 == FALSE)
-        sub_8108E70(taskId, a2, gStringVar4, sub_810A1F8);
+        DisplayItemMessageInBag(taskId, a2, gStringVar4, sub_810A1F8);
     else
         DisplayItemMessageOnField(taskId, a2, gStringVar4, sub_80A112C);
 }
@@ -108,11 +115,11 @@ void sub_80A112C(u8 taskId)
     ScriptContext2_Disable();
 }
 
-u8 sub_80A1150(u16 itemId)
+u8 GetItemCompatibilityRule(u16 itemId)
 {
     if (ItemId_GetPocket(itemId) == POCKET_TM_CASE)
         return 1;
-    else if (ItemId_GetFieldFunc(itemId) == FieldUseFunc_SunStone)
+    else if (ItemId_GetFieldFunc(itemId) == FieldUseFunc_EvoItem)
         return 2;
     else
         return 0;
@@ -240,3 +247,76 @@ void ItemUseOutOfBattle_Itemfinder(u8 taskId)
     sItemUseOnFieldCB = sub_813EC8C;
     sub_80A103C(taskId);
 }
+
+void FieldUseFunc_CoinCase(u8 taskId)
+{
+    ConvertIntToDecimalStringN(gStringVar1, GetCoins(), STR_CONV_MODE_LEFT_ALIGN, 4);
+    StringExpandPlaceholders(gStringVar4, gUnknown_8416537);
+    ItemUse_SetQuestLogEvent(4, NULL, gSpecialVar_ItemId, 0xFFFF);
+    if (gTasks[taskId].data[3] == 0)
+        DisplayItemMessageInBag(taskId, 2, gStringVar4, sub_810A1F8);
+    else
+        DisplayItemMessageOnField(taskId, 2, gStringVar4, sub_80A112C);
+}
+
+void FieldUseFunc_PowderJar(u8 taskId)
+{
+    ConvertIntToDecimalStringN(gStringVar1, GetBerryPowder(), STR_CONV_MODE_LEFT_ALIGN, 5);
+    StringExpandPlaceholders(gStringVar4, gUnknown_8416644);
+    ItemUse_SetQuestLogEvent(4, NULL, gSpecialVar_ItemId, 0xFFFF);
+    if (gTasks[taskId].data[3] == 0)
+        DisplayItemMessageInBag(taskId, 2, gStringVar4, sub_810A1F8);
+    else
+        DisplayItemMessageOnField(taskId, 2, gStringVar4, sub_80A112C);
+}
+
+void FieldUseFunc_PokeFlute(u8 taskId)
+{
+    bool8 wokeSomeoneUp = FALSE;
+    u8 i;
+
+    for (i = 0; i < CalculatePlayerPartyCount(); i++)
+    {
+        if (!ExecuteTableBasedItemEffect(&gPlayerParty[i], ITEM_AWAKENING, i, MOVE_NONE))
+            wokeSomeoneUp = TRUE;
+    }
+
+    if (wokeSomeoneUp)
+    {
+        ItemUse_SetQuestLogEvent(4, NULL, gSpecialVar_ItemId, 0xFFFF);
+        if (gTasks[taskId].data[3] == 0)
+            DisplayItemMessageInBag(taskId, 2, gUnknown_8416690, sub_80A1648);
+        else
+            DisplayItemMessageOnField(taskId, 2, gUnknown_8416690, sub_80A1648);
+    }
+    else
+    {
+        // Now that's a catchy tune!
+        if (gTasks[taskId].data[3] == 0)
+            DisplayItemMessageInBag(taskId, 2, gUnknown_841665C, sub_810A1F8);
+        else
+            DisplayItemMessageOnField(taskId, 2, gUnknown_841665C, sub_80A112C);
+    }
+}
+
+void sub_80A1648(u8 taskId)
+{
+    PlayFanfareByFanfareNum(FANFARE_POKEFLUTE);
+    gTasks[taskId].func = sub_80A1674;
+}
+
+void sub_80A1674(u8 taskId)
+{
+    if (WaitFanfare(FALSE))
+    {
+        if (gTasks[taskId].data[3] == 0)
+            DisplayItemMessageInBag(taskId, 2, gUnknown_84166A7, sub_810A1F8);
+        else
+            DisplayItemMessageOnField(taskId, 2, gUnknown_84166A7, sub_80A112C);
+    }
+}
+
+void sub_80A16D0(u8 taskId)
+{
+    sub_80A0FBC(taskId);
+}
diff --git a/sym_ewram.txt b/sym_ewram.txt
index 0541f4d07..a8672a553 100644
--- a/sym_ewram.txt
+++ b/sym_ewram.txt
@@ -1571,4 +1571,4 @@ gUnknown_203F440: @ 203F440
 	.align 2
 	.include "src/trainer_tower.o"
 	.align 2
-	.include "src/unk_815EDDC.o"
+	.include "src/berry_powder.o"