From fd2a10df148e74793e490633f32d60a336444a63 Mon Sep 17 00:00:00 2001
From: Seth Barberee <seth.barberee@gmail.com>
Date: Fri, 22 Aug 2025 16:13:50 -0700
Subject: [PATCH 1/4] initial decomp work

decomp more item funcs

new file boundary and more decomp

address review comments

Match IsValidTargetItem thanks to @taxicat1
---
 asm/include/main_0200CAFC.inc |   3 +
 asm/main_0200CAFC.s           | 247 ----------------------------------
 asm/main_02054E4C.s           |  80 -----------
 include/item_util.h           |   8 ++
 include/item_util_4.h         |  13 ++
 include/main_02054DC4.h       |   4 +
 main.lsf                      |   1 +
 src/item_util.c               |  47 +++++++
 src/item_util_4.c             |  66 +++++++++
 src/main_02054DC4.c           |  35 +++++
 10 files changed, 177 insertions(+), 327 deletions(-)
 create mode 100644 include/item_util_4.h
 create mode 100644 src/item_util_4.c

diff --git a/asm/include/main_0200CAFC.inc b/asm/include/main_0200CAFC.inc
index 36ccae11..acd63585 100644
--- a/asm/include/main_0200CAFC.inc
+++ b/asm/include/main_0200CAFC.inc
@@ -35,7 +35,10 @@
 .public GetLanguage
 .public GetThrownItemQuantityLimit
 .public HandleSir0Translation
+.public IsAuraBow
 .public IsItemValid
+.public IsShoppableItem
+.public IsThrownItem
 .public ITEM_DATA_TABLE_PTRS
 .public ITEM_TABLES_PTRS_1
 .public LoadFileFromRom
diff --git a/asm/main_0200CAFC.s b/asm/main_0200CAFC.s
index 5631d9b7..20de9658 100644
--- a/asm/main_0200CAFC.s
+++ b/asm/main_0200CAFC.s
@@ -3,253 +3,6 @@
 
 	.text
 
-	arm_func_start GetItemMoveId16
-GetItemMoveId16: ; 0x0200CAFC
-	stmdb sp!, {r3, lr}
-	bl GetItemMoveId
-	mov r0, r0, lsl #0x10
-	mov r0, r0, lsr #0x10
-	ldmia sp!, {r3, pc}
-	arm_func_end GetItemMoveId16
-
-	arm_func_start IsThrownItem
-IsThrownItem: ; 0x0200CB10
-	stmdb sp!, {r3, lr}
-	bl GetItemCategory
-	cmp r0, #1
-	movls r0, #1
-	movhi r0, #0
-	and r0, r0, #0xff
-	ldmia sp!, {r3, pc}
-	arm_func_end IsThrownItem
-
-	arm_func_start IsNotMoney
-IsNotMoney: ; 0x0200CB2C
-	cmp r0, #0
-	moveq r0, #0
-	bxeq lr
-	cmp r0, #0xb7
-	movne r0, #1
-	moveq r0, #0
-	and r0, r0, #0xff
-	bx lr
-	arm_func_end IsNotMoney
-
-	arm_func_start IsEdible
-IsEdible: ; 0x0200CB4C
-	stmdb sp!, {r3, lr}
-	bl GetItemCategory
-	add r0, r0, #0xfe
-	and r0, r0, #0xff
-	cmp r0, #1
-	movls r0, #1
-	movhi r0, #0
-	and r0, r0, #0xff
-	ldmia sp!, {r3, pc}
-	arm_func_end IsEdible
-
-	arm_func_start IsHM
-IsHM: ; 0x0200CB70
-	ldr r2, _0200CBF0 ; =0x0000011D
-	cmp r0, r2
-	moveq r0, #1
-	bxeq lr
-	add r1, r2, #1
-	cmp r0, r1
-	moveq r0, #1
-	bxeq lr
-	add r1, r2, #2
-	cmp r0, r1
-	moveq r0, #1
-	bxeq lr
-	cmp r0, #0x120
-	moveq r0, #1
-	bxeq lr
-	add r1, r2, #5
-	cmp r0, r1
-	moveq r0, #1
-	bxeq lr
-	add r1, r2, #6
-	cmp r0, r1
-	moveq r0, #1
-	bxeq lr
-	cmp r0, #0x124
-	moveq r0, #1
-	bxeq lr
-	add r1, r2, #4
-	cmp r0, r1
-	moveq r0, #1
-	movne r0, #0
-	and r0, r0, #0xff
-	bx lr
-	.align 2, 0
-_0200CBF0: .word 0x0000011D
-	arm_func_end IsHM
-
-	arm_func_start IsGummi
-IsGummi: ; 0x0200CBF4
-	cmp r0, #0x77
-	movlt r0, #0
-	bxlt lr
-	cmp r0, #0x88
-	movle r0, #1
-	movgt r0, #0
-	and r0, r0, #0xff
-	bx lr
-	arm_func_end IsGummi
-
-	arm_func_start IsAuraBow
-IsAuraBow: ; 0x0200CC14
-	cmp r0, #0x1ac
-	blt _0200CC2C
-	ldr r1, _0200CC34 ; =0x000001BB
-	cmp r0, r1
-	movle r0, #1
-	bxle lr
-_0200CC2C:
-	mov r0, #0
-	bx lr
-	.align 2, 0
-_0200CC34: .word 0x000001BB
-	arm_func_end IsAuraBow
-
-	arm_func_start IsLosableItem
-IsLosableItem: ; 0x0200CC38
-	stmdb sp!, {r4, lr}
-	mov r4, r0
-	ldrb r0, [r4]
-	tst r0, #1
-	movne r0, #1
-	moveq r0, #0
-	tst r0, #0xff
-	beq _0200CC7C
-	ldrsh r0, [r4, #4]
-	bl IsAuraBow
-	cmp r0, #0
-	beq _0200CC74
-	ldrb r0, [r4]
-	tst r0, #2
-	beq _0200CC7C
-_0200CC74:
-	mov r0, #1
-	ldmia sp!, {r4, pc}
-_0200CC7C:
-	mov r0, #0
-	ldmia sp!, {r4, pc}
-	arm_func_end IsLosableItem
-
-	arm_func_start IsTreasureBox
-IsTreasureBox: ; 0x0200CC84
-	stmdb sp!, {r3, lr}
-	bl GetItemCategory
-	add r0, r0, #0xf4
-	and r0, r0, #0xff
-	cmp r0, #2
-	movls r0, #1
-	movhi r0, #0
-	and r0, r0, #0xff
-	ldmia sp!, {r3, pc}
-	arm_func_end IsTreasureBox
-
-	arm_func_start IsStorableItem
-IsStorableItem: ; 0x0200CCA8
-	cmp r0, #0
-	moveq r0, #0
-	bxeq lr
-	cmp r0, #0xb7
-	moveq r0, #0
-	bxeq lr
-	cmp r0, #0xbb
-	moveq r0, #0
-	bxeq lr
-	cmp r0, #0xb2
-	movne r0, #1
-	moveq r0, #0
-	and r0, r0, #0xff
-	bx lr
-	arm_func_end IsStorableItem
-
-	arm_func_start IsShoppableItem
-IsShoppableItem: ; 0x0200CCE0
-	stmdb sp!, {r4, lr}
-	movs r4, r0
-	moveq r0, #0
-	ldmeqia sp!, {r4, pc}
-	cmp r4, #0xb7
-	moveq r0, #0
-	ldmeqia sp!, {r4, pc}
-	cmp r4, #9
-	moveq r0, #0
-	ldmeqia sp!, {r4, pc}
-	cmp r4, #0x39
-	moveq r0, #0
-	ldmeqia sp!, {r4, pc}
-	cmp r4, #0x3a
-	moveq r0, #0
-	ldmeqia sp!, {r4, pc}
-	cmp r4, #0x73
-	moveq r0, #0
-	ldmeqia sp!, {r4, pc}
-	cmp r4, #0x88
-	moveq r0, #0
-	ldmeqia sp!, {r4, pc}
-	cmp r4, #0xb9
-	moveq r0, #0
-	ldmeqia sp!, {r4, pc}
-	cmp r4, #0xad
-	moveq r0, #0
-	ldmeqia sp!, {r4, pc}
-	cmp r4, #0xae
-	moveq r0, #0
-	ldmeqia sp!, {r4, pc}
-	cmp r4, #0xa
-	moveq r0, #0
-	ldmeqia sp!, {r4, pc}
-	cmp r4, #0xb0
-	moveq r0, #0
-	ldmeqia sp!, {r4, pc}
-	cmp r4, #0x5d
-	moveq r0, #0
-	ldmeqia sp!, {r4, pc}
-	bl GetItemSellPrice
-	cmp r0, #0
-	moveq r0, #0
-	ldmeqia sp!, {r4, pc}
-	mov r0, r4
-	bl GetItemBuyPrice
-	cmp r0, #0
-	movne r0, #1
-	moveq r0, #0
-	and r0, r0, #0xff
-	ldmia sp!, {r4, pc}
-	arm_func_end IsShoppableItem
-
-	arm_func_start IsValidTargetItem
-IsValidTargetItem: ; 0x0200CDAC
-	cmp r0, #0x16c
-	movge r0, #1
-	bxge lr
-	mov ip, #0
-	ldr r2, _0200CDF0 ; =_020A18BC
-	ldr r1, _0200CDF4 ; =0x00000578
-	b _0200CDD8
-_0200CDC8:
-	cmp r0, r3
-	moveq r0, #1
-	bxeq lr
-	add ip, ip, #1
-_0200CDD8:
-	mov r3, ip, lsl #1
-	ldrsh r3, [r2, r3]
-	cmp r3, r1
-	bne _0200CDC8
-	mov r0, #0
-	bx lr
-	.align 2, 0
-_0200CDF0: .word _020A18BC
-_0200CDF4: .word 0x00000578
-	arm_func_end IsValidTargetItem
-
 	arm_func_start IsItemUsableNow
 IsItemUsableNow: ; 0x0200CDF8
 	stmdb sp!, {r4, lr}
diff --git a/asm/main_02054E4C.s b/asm/main_02054E4C.s
index fbe56c19..dcd2bb16 100644
--- a/asm/main_02054E4C.s
+++ b/asm/main_02054E4C.s
@@ -3,86 +3,6 @@
 
 	.text
 
-	arm_func_start GendersEqual
-GendersEqual: ; 0x02054E4C
-	stmdb sp!, {r3, r4, r5, lr}
-	mov r5, r1
-	bl GetMonsterGender
-	mov r4, r0
-	mov r0, r5
-	bl GetMonsterGender
-	cmp r4, r0
-	moveq r0, #1
-	movne r0, #0
-	and r0, r0, #0xff
-	ldmia sp!, {r3, r4, r5, pc}
-	arm_func_end GendersEqual
-
-	arm_func_start GendersEqualNotGenderless
-GendersEqualNotGenderless: ; 0x02054E78
-	stmdb sp!, {r3, r4, r5, lr}
-	mov r4, r0
-	mov r5, r1
-	bl GetMonsterGender
-	cmp r0, #3
-	beq _02054EC0
-	mov r0, r5
-	bl GetMonsterGender
-	cmp r0, #3
-	beq _02054EC0
-	mov r0, r4
-	bl GetMonsterGender
-	mov r4, r0
-	mov r0, r5
-	bl GetMonsterGender
-	cmp r4, r0
-	moveq r0, #1
-	ldmeqia sp!, {r3, r4, r5, pc}
-_02054EC0:
-	mov r0, #0
-	ldmia sp!, {r3, r4, r5, pc}
-	arm_func_end GendersEqualNotGenderless
-
-	arm_func_start GendersNotEqualNotGenderless
-GendersNotEqualNotGenderless: ; 0x02054EC8
-	stmdb sp!, {r3, r4, r5, lr}
-	mov r4, r0
-	mov r5, r1
-	bl GetMonsterGender
-	cmp r0, #3
-	beq _02054F10
-	mov r0, r5
-	bl GetMonsterGender
-	cmp r0, #3
-	beq _02054F10
-	mov r0, r4
-	bl GetMonsterGender
-	mov r4, r0
-	mov r0, r5
-	bl GetMonsterGender
-	cmp r4, r0
-	movne r0, #1
-	ldmneia sp!, {r3, r4, r5, pc}
-_02054F10:
-	mov r0, #0
-	ldmia sp!, {r3, r4, r5, pc}
-	arm_func_end GendersNotEqualNotGenderless
-
-	arm_func_start sub_02054F18
-sub_02054F18: ; 0x02054F18
-	mov r0, r0, lsl #0x10
-	mov r0, r0, lsr #0x10
-	add r0, r0, #0xea
-	add r0, r0, #0xfd00
-	mov r0, r0, lsl #0x10
-	mov r0, r0, lsr #0x10
-	cmp r0, #2
-	movls r0, #1
-	movhi r0, #0
-	and r0, r0, #0xff
-	bx lr
-	arm_func_end sub_02054F18
-
 	arm_func_start sub_02054F44
 sub_02054F44: ; 0x02054F44
 	stmdb sp!, {r4, r5, lr}
diff --git a/include/item_util.h b/include/item_util.h
index d0f18903..906b501b 100644
--- a/include/item_util.h
+++ b/include/item_util.h
@@ -6,5 +6,13 @@
 // Likely a linker-generated veneer for GetItemCategory.
 // See https://developer.arm.com/documentation/dui0474/k/image-structure-and-generation/linker-generated-veneers/what-is-a-veneer-
 enum item_category GetItemCategoryVeneer(s16 item_id);
+u16 GetItemMoveId16(s16 item_id);
+bool8 IsThrownItem(s16 item_id);
+bool8 IsNotMoney(s16 item_id);
+bool8 IsEdible(s16 item_id);
+bool8 IsHM(s16 item_id);
+bool8 IsGummi(s16 item_id);
+bool8 IsGummi(s16 item_id);
+BOOL IsAuraBow(s32 item_id);
 
 #endif //PMDSKY_ITEM_UTIL_H
diff --git a/include/item_util_4.h b/include/item_util_4.h
new file mode 100644
index 00000000..555df2ee
--- /dev/null
+++ b/include/item_util_4.h
@@ -0,0 +1,13 @@
+#ifndef PMDSKY_ITEM_UTIL_4_H
+#define PMDSKY_ITEM_UTIL_4_H
+
+#include "item.h"
+
+BOOL IsLosableItem(struct item* item);
+bool8 IsTreasureBox(s16 item_id);
+bool8 IsStorableItem(s16 item_id);
+bool8 IsShoppableItem(s16 item_id);
+bool8 IsValidTargetItem(s16 item_id);
+
+#endif //PMDSKY_ITEM_UTIL_4_H
+
diff --git a/include/main_02054DC4.h b/include/main_02054DC4.h
index ff8a7ea4..a649f45b 100644
--- a/include/main_02054DC4.h
+++ b/include/main_02054DC4.h
@@ -4,5 +4,9 @@
 #include "util.h"
 
 bool32 DexNumbersEqual(s16 monster1, s16 monster2);
+u8 GendersEqual(s16 monster1, s16 monster2);
+u8 GendersEqualNotGenderless(s16 monster1, s16 monster2);
+u8 GendersNotEqualNotGenderless(s16 monster1, s16 monster2);
+u8 sub_02054F18(s32 _arg0);
 
 #endif //PMDSKY_MAIN_02054DC4_H
diff --git a/main.lsf b/main.lsf
index dadaed83..dfcdfb2d 100644
--- a/main.lsf
+++ b/main.lsf
@@ -37,6 +37,7 @@ Static main
 	Object src/directory_file.o
 	Object asm/main_0200C4CC.o
 	Object src/item_util.o
+	Object src/item_util_4.o
 	Object asm/main_0200CAFC.o
 	Object src/item_util_1.o
 	Object asm/main_0200E7E8.o
diff --git a/src/item_util.c b/src/item_util.c
index aa078583..f3c34306 100644
--- a/src/item_util.c
+++ b/src/item_util.c
@@ -1,7 +1,54 @@
 #include "item_util.h"
 #include "item_util_2.h"
 
+extern s32 GetItemMoveId(s32 item_id);
+
 enum item_category GetItemCategoryVeneer(s16 item_id)
 {
     return GetItemCategory(item_id);
 }
+
+u16 GetItemMoveId16(s16 item_id)
+{
+    return GetItemMoveId(item_id);
+}
+
+bool8 IsThrownItem(s16 item_id) 
+{
+    return (GetItemCategory(item_id) <= CATEGORY_THROWN_ARC);
+}
+
+bool8 IsNotMoney(s16 item_id) 
+{
+    if (item_id == ITEM_NOTHING) return FALSE;
+    return (item_id != ITEM_POKE);
+}
+
+bool8 IsEdible(s16 item_id) 
+{
+    return ((bool8) (GetItemCategory(item_id) + 0xFE) <= 1);
+}
+
+bool8 IsHM(s16 item_id) 
+{
+    if(item_id == ITEM_TM_CUT) return TRUE;
+    else if(item_id == ITEM_TM_FLY) return TRUE;
+    else if(item_id == ITEM_TM_SURF) return TRUE;
+    else if(item_id == ITEM_TM_STRENGTH) return TRUE;
+    else if(item_id == ITEM_TM_ROCK_SMASH) return TRUE;
+    else if(item_id == ITEM_TM_WATERFALL) return TRUE;
+    else if(item_id == ITEM_TM_ROCK_CLIMB) return TRUE;
+    else if(item_id == ITEM_TM_DEFOG) return TRUE;
+    else return FALSE;
+}
+
+bool8 IsGummi(s16 item_id) 
+{
+    if(item_id < ITEM_WHITE_GUMMI) return FALSE;
+    return (item_id <= ITEM_WONDER_GUMMI);
+}
+
+BOOL IsAuraBow(s32 item_id) 
+{
+    return ((item_id >= ITEM_SILVER_BOW) && (item_id <= ITEM_FUCHSIA_BOW));
+}
diff --git a/src/item_util_4.c b/src/item_util_4.c
new file mode 100644
index 00000000..ab85a7ad
--- /dev/null
+++ b/src/item_util_4.c
@@ -0,0 +1,66 @@
+#include "item_util_4.h"
+#include "dungeon_util_static.h"
+#include "item.h"
+#include "item_util.h"
+#include "item_util_2.h"
+
+extern s32 GetItemSellPrice(s16);
+extern s32 GetItemBuyPrice(s16);
+
+BOOL IsLosableItem(struct item* item)
+{
+    return ((ItemExists(item->flags) && ((!IsAuraBow(item->id)) || (item->flags & ITEM_FLAG_IN_SHOP))));
+}
+
+bool8 IsTreasureBox(s16 item_id)
+{
+    // NOTE: FAKEMATCH
+    // TODO: Categories 12 - 14
+    return ((u8) (GetItemCategory(item_id) + 0xF4) <= 2);
+}
+
+bool8 IsStorableItem(s16 item_id)
+{
+    if (item_id == ITEM_NOTHING) return 0;
+    if (item_id == ITEM_POKE) return 0;
+    if (item_id == ITEM_TM_USED_TM) return 0;
+    if (item_id == ITEM_WONDER_EGG) return 0;
+    return 1;
+}
+
+bool8 IsShoppableItem(s16 item_id)
+{
+    if (item_id == ITEM_NOTHING) return FALSE;
+    if (item_id == ITEM_POKE) return FALSE;
+    if (item_id == ITEM_GOLD_THORN) return FALSE;
+    if (item_id == ITEM_GOLDEN_MASK) return FALSE;
+    if (item_id == ITEM_AMBER_TEAR) return FALSE;
+    if (item_id == ITEM_GOLDEN_APPLE) return FALSE;
+    if (item_id == ITEM_WONDER_GUMMI) return FALSE;
+    if (item_id == ITEM_UNNAMED_0xB9) return FALSE;
+    if (item_id == ITEM_MYSTERY_PART) return FALSE;
+    if (item_id == ITEM_SECRET_SLAB) return FALSE;
+    if (item_id == ITEM_RARE_FOSSIL) return FALSE;
+    if (item_id == ITEM_UNNAMED_0xB0) return FALSE;
+    if (item_id == ITEM_GOLDEN_SEED) return FALSE;
+    if (GetItemSellPrice(item_id) == 0) return FALSE;
+    if (GetItemBuyPrice(item_id) == 0) return FALSE;
+    return 1;
+}
+
+extern s16 _020A18BC[10];
+
+bool8 IsValidTargetItem(s16 item_id) {
+    s32 var_ip;
+
+    if (item_id >= 0x16C) return TRUE;
+
+    for (var_ip = 0; _020A18BC[var_ip] != 0x578; var_ip++)
+    {
+        if (item_id == _020A18BC[var_ip]) {
+            return TRUE;
+        }
+    } 
+    
+    return FALSE;
+}
diff --git a/src/main_02054DC4.c b/src/main_02054DC4.c
index 6490ac63..f3dc67bc 100644
--- a/src/main_02054DC4.c
+++ b/src/main_02054DC4.c
@@ -1,4 +1,5 @@
 #include "main_02054DC4.h"
+#include "main_020527A8.h"
 #include "util.h"
 #include "main_020526EC.h"
 #include "main_02054AA4.h"
@@ -15,3 +16,37 @@ bool32 DexNumbersEqual(s16 monster1, s16 monster2) {
     else if (IsUnown(true_base_1) && IsUnown(true_base_2)) return FALSE;
     else return GetDexNumber(true_base_1) == GetDexNumber(true_base_2);
 }
+
+u8 GendersEqual(s16 monster1, s16 monster2)
+{
+    return GetMonsterGender(monster1) == GetMonsterGender(monster2);
+}
+
+u8 GendersEqualNotGenderless(s16 monster1, s16 monster2) 
+{
+
+    if ((GetMonsterGender(monster1) != 3) && (GetMonsterGender(monster2) != 3))
+        if(GetMonsterGender(monster1) == GetMonsterGender(monster2))
+            return TRUE;
+    return FALSE;
+}
+
+u8 GendersNotEqualNotGenderless(s16 monster1, s16 monster2) 
+{
+
+    if ((GetMonsterGender(monster1) != 3) && (GetMonsterGender(monster2) != 3))
+        if(GetMonsterGender(monster1) != GetMonsterGender(monster2))
+            return TRUE;
+    return FALSE;
+}
+
+u8 sub_02054F18(s32 _arg0)
+{
+    s32 arg0 = (u16) _arg0;
+
+    if ((u32) (u16) (arg0 + 0xFDEA) <= 2U) {
+        return TRUE;
+    } else {
+        return FALSE;
+    }
+}

From 1753dbd90577a171664d804143da37b223a18a26 Mon Sep 17 00:00:00 2001
From: Seth Barberee <seth.barberee@gmail.com>
Date: Wed, 27 Aug 2025 21:25:06 -0700
Subject: [PATCH 2/4] More item decomp

---
 asm/include/main_0200CAFC.inc |   1 +
 asm/main_0200CAFC.s           | 123 ----------------------------------
 include/item_util_4.h         |  12 ++++
 src/item_util_4.c             |  89 ++++++++++++++++++++++--
 4 files changed, 97 insertions(+), 128 deletions(-)

diff --git a/asm/include/main_0200CAFC.inc b/asm/include/main_0200CAFC.inc
index acd63585..8abb478e 100644
--- a/asm/include/main_0200CAFC.inc
+++ b/asm/include/main_0200CAFC.inc
@@ -35,6 +35,7 @@
 .public GetLanguage
 .public GetThrownItemQuantityLimit
 .public HandleSir0Translation
+.public InitItem
 .public IsAuraBow
 .public IsItemValid
 .public IsShoppableItem
diff --git a/asm/main_0200CAFC.s b/asm/main_0200CAFC.s
index 20de9658..37ae83b6 100644
--- a/asm/main_0200CAFC.s
+++ b/asm/main_0200CAFC.s
@@ -3,129 +3,6 @@
 
 	.text
 
-	arm_func_start IsItemUsableNow
-IsItemUsableNow: ; 0x0200CDF8
-	stmdb sp!, {r4, lr}
-	mov r4, r0
-	ldrb r0, [r4]
-	tst r0, #2
-	beq _0200CE6C
-	ldrsh r0, [r4, #4]
-	bl GetItemCategory
-	cmp r0, #5
-	ldrnesh r0, [r4, #4]
-	cmpne r0, #0x47
-	cmpne r0, #0x4d
-	cmpne r0, #0x58
-	cmpne r0, #0x59
-	cmpne r0, #0x5d
-	cmpne r0, #0x64
-	cmpne r0, #0x65
-	cmpne r0, #0x66
-	cmpne r0, #0x67
-	cmpne r0, #0x6c
-	beq _0200CE64
-	sub r0, r0, #0x77
-	mov r0, r0, lsl #0x10
-	mov r0, r0, asr #0x10
-	mov r0, r0, lsl #0x10
-	mov r0, r0, lsr #0x10
-	cmp r0, #0x11
-	bhi _0200CE6C
-_0200CE64:
-	mov r0, #0
-	ldmia sp!, {r4, pc}
-_0200CE6C:
-	mov r0, #1
-	ldmia sp!, {r4, pc}
-	arm_func_end IsItemUsableNow
-
-	arm_func_start IsTicketItem
-IsTicketItem: ; 0x0200CE74
-	sub r0, r0, #0xa9
-	mov r0, r0, lsl #0x10
-	mov r0, r0, asr #0x10
-	mov r0, r0, lsl #0x10
-	mov r0, r0, lsr #0x10
-	cmp r0, #3
-	movls r0, #1
-	movhi r0, #0
-	and r0, r0, #0xff
-	bx lr
-	arm_func_end IsTicketItem
-
-	arm_func_start InitItem
-InitItem: ; 0x0200CE9C
-	stmdb sp!, {r3, r4, r5, r6, r7, lr}
-	movs r6, r1
-	mov r7, r0
-	mov r5, r2
-	mov r4, r3
-	beq _0200CF44
-	mov r0, #1
-	strb r0, [r7]
-	mov r0, r6
-	strh r6, [r7, #4]
-	mov r1, #0
-	strb r1, [r7, #1]
-	bl IsThrownItem
-	cmp r0, #0
-	mov r0, r6
-	beq _0200CF04
-	mov r1, #1
-	bl GetThrownItemQuantityLimit
-	mov r5, r0
-	mov r0, r6
-	mov r1, #0
-	bl GetThrownItemQuantityLimit
-	mov r1, r5
-	bl RandRangeSafe
-	strh r0, [r7, #2]
-	b _0200CF30
-_0200CF04:
-	bl GetItemCategory
-	cmp r0, #6
-	moveq r0, #1
-	streqh r0, [r7, #2]
-	beq _0200CF30
-	add r0, r0, #0xf4
-	and r0, r0, #0xff
-	cmp r0, #2
-	strlsh r5, [r7, #2]
-	movhi r0, #0
-	strhih r0, [r7, #2]
-_0200CF30:
-	cmp r4, #0
-	ldrneb r0, [r7]
-	orrne r0, r0, #8
-	strneb r0, [r7]
-	ldmia sp!, {r3, r4, r5, r6, r7, pc}
-_0200CF44:
-	mov r0, #0
-	strb r0, [r7]
-	strh r6, [r7, #4]
-	strh r0, [r7, #2]
-	ldmia sp!, {r3, r4, r5, r6, r7, pc}
-	arm_func_end InitItem
-
-	arm_func_start InitStandardItem
-InitStandardItem: ; 0x0200CF58
-	ldr ip, _0200CF68 ; =InitItem
-	mov r3, r2
-	mov r2, #0
-	bx ip
-	.align 2, 0
-_0200CF68: .word InitItem
-	arm_func_end InitStandardItem
-
-	arm_func_start sub_0200CF6C
-sub_0200CF6C: ; 0x0200CF6C
-	ldr ip, _0200CF74 ; =InitItem
-	bx ip
-	.align 2, 0
-_0200CF74: .word InitItem
-	arm_func_end sub_0200CF6C
-
 	arm_func_start InitBulkItem
 InitBulkItem: ; 0x0200CF78
 	stmdb sp!, {r4, r5, r6, lr}
diff --git a/include/item_util_4.h b/include/item_util_4.h
index 555df2ee..552e6388 100644
--- a/include/item_util_4.h
+++ b/include/item_util_4.h
@@ -3,11 +3,23 @@
 
 #include "item.h"
 
+struct bulk_item
+{
+    /* 0x0 */ s16 id;
+    /* 0x2 */ u16 quantity;
+} BulkItem;
+
 BOOL IsLosableItem(struct item* item);
 bool8 IsTreasureBox(s16 item_id);
 bool8 IsStorableItem(s16 item_id);
 bool8 IsShoppableItem(s16 item_id);
 bool8 IsValidTargetItem(s16 item_id);
+bool8 IsItemUsableNow(struct item *item);
+bool8 IsTicketItem(s16 item_id);
+void InitItem(struct item* item, s16 id, s16 quantity, bool8 isSticky);
+void InitStandardItem(struct item* item, s16 id, bool8 isSticky);
+void sub_0200CF6C(struct item* item, s16 id, s16 quantity, bool8 isSticky);
+//void InitBulkItem(struct bulk_item* item, s16 id);
 
 #endif //PMDSKY_ITEM_UTIL_4_H
 
diff --git a/src/item_util_4.c b/src/item_util_4.c
index ab85a7ad..cd663a12 100644
--- a/src/item_util_4.c
+++ b/src/item_util_4.c
@@ -6,6 +6,9 @@
 
 extern s32 GetItemSellPrice(s16);
 extern s32 GetItemBuyPrice(s16);
+extern s32 GetThrownItemQuantityLimit(s16, s32);
+extern s16 RandRangeSafe(s32, s32);
+extern s16 _020A18BC[10];
 
 BOOL IsLosableItem(struct item* item)
 {
@@ -48,14 +51,13 @@ bool8 IsShoppableItem(s16 item_id)
     return 1;
 }
 
-extern s16 _020A18BC[10];
-
-bool8 IsValidTargetItem(s16 item_id) {
+bool8 IsValidTargetItem(s16 item_id)
+{
     s32 var_ip;
 
-    if (item_id >= 0x16C) return TRUE;
+    if (item_id >= ITEM_GORGEOUS_BOX_1) return TRUE;
 
-    for (var_ip = 0; _020A18BC[var_ip] != 0x578; var_ip++)
+    for (var_ip = 0; _020A18BC[var_ip] != NUM_ITEM_IDS; var_ip++)
     {
         if (item_id == _020A18BC[var_ip]) {
             return TRUE;
@@ -64,3 +66,80 @@ bool8 IsValidTargetItem(s16 item_id) {
     
     return FALSE;
 }
+
+bool8 IsItemUsableNow(struct item* item)
+{
+    s16 item_id;
+
+    if (item->flags & ITEM_FLAG_IN_SHOP) {
+        if (GetItemCategory(item->id) != CATEGORY_TMS_HMS) {
+            item_id = item->id;
+            if ((item_id != ITEM_SITRUS_BERRY) && 
+                (item_id != ITEM_LIFE_SEED) && 
+                (item_id != ITEM_GINSENG) && 
+                (item_id != ITEM_JOY_SEED) && 
+                (item_id != ITEM_GOLDEN_SEED) && 
+                (item_id != ITEM_PROTEIN) && 
+                (item_id != ITEM_CALCIUM) && 
+                (item_id != ITEM_IRON) && 
+                (item_id != ITEM_NECTAR) && 
+                (item_id != ITEM_ZINC)) {
+                if ((u16) (s16) (item_id - 0x77) > 0x11) {
+                    goto _ret;
+                }
+            }
+        }
+        return FALSE;
+    }
+_ret:
+    return TRUE;
+}
+
+bool8 IsTicketItem(s16 item_id)
+{
+    s32 arg0 = (u16)(s16)(item_id - ITEM_PRIZE_TICKET);
+
+    return ((arg0) <= 3U);
+}
+
+void InitItem(struct item* item, s16 id, s16 quantity, bool8 isSticky)
+{
+    s32 category;
+    s32 to;
+
+    if (id != 0) {
+        item->flags = ITEM_FLAG_EXISTS;
+        item->id = id;
+        item->held_by = 0;
+        if (IsThrownItem(id)) {
+            to = GetThrownItemQuantityLimit(id, 1);
+            item->quantity = RandRangeSafe(GetThrownItemQuantityLimit(id, 0), to);
+        } else {
+            category = GetItemCategory(id);
+            if (category == CATEGORY_POKE) {
+                item->quantity = 1;
+            } else if ((u8) (category + 0xF4) <= 2) {
+                item->quantity = quantity;
+            } else {
+                item->quantity = 0;
+            }
+        }
+        if (isSticky != 0) {
+            item->flags |= ITEM_FLAG_STICKY;
+        }
+        return;
+    }
+    item->flags = 0;
+    item->id = id;
+    item->quantity = 0;
+}
+
+void InitStandardItem(struct item* item, s16 id, bool8 isSticky)
+{
+   InitItem(item, id, 0, isSticky);
+}
+
+void sub_0200CF6C(struct item* item, s16 id, s16 quantity, bool8 isSticky)
+{
+    InitItem(item, id, quantity, isSticky);
+}

From afd76a33ac6b5a3be24b47665aed93ed1a449076 Mon Sep 17 00:00:00 2001
From: Seth Barberee <seth.barberee@gmail.com>
Date: Wed, 27 Aug 2025 21:28:41 -0700
Subject: [PATCH 3/4] Decomp InitBulkItem thanks to @tgsm

---
 asm/main_0200CAFC.s   | 36 ------------------------------------
 include/item.h        |  6 ++++++
 include/item_util_4.h |  8 +-------
 src/item_util_4.c     | 25 +++++++++++++++++++++++--
 4 files changed, 30 insertions(+), 45 deletions(-)

diff --git a/asm/main_0200CAFC.s b/asm/main_0200CAFC.s
index 37ae83b6..d52a31f2 100644
--- a/asm/main_0200CAFC.s
+++ b/asm/main_0200CAFC.s
@@ -3,42 +3,6 @@
 
 	.text
 
-	arm_func_start InitBulkItem
-InitBulkItem: ; 0x0200CF78
-	stmdb sp!, {r4, r5, r6, lr}
-	movs r5, r1
-	mov r6, r0
-	strh r5, [r6]
-	beq _0200CFE4
-	mov r0, r5
-	bl IsThrownItem
-	cmp r0, #0
-	mov r0, r5
-	beq _0200CFC8
-	mov r1, #1
-	bl GetThrownItemQuantityLimit
-	mov r4, r0
-	mov r0, r5
-	mov r1, #0
-	bl GetThrownItemQuantityLimit
-	mov r1, r4
-	bl RandRangeSafe
-	strh r0, [r6, #2]
-	ldmia sp!, {r4, r5, r6, pc}
-_0200CFC8:
-	bl GetItemCategory
-	cmp r0, #6
-	moveq r0, #1
-	streqh r0, [r6, #2]
-	movne r0, #0
-	strneh r0, [r6, #2]
-	ldmia sp!, {r4, r5, r6, pc}
-_0200CFE4:
-	mov r0, #0
-	strh r0, [r6, #2]
-	ldmia sp!, {r4, r5, r6, pc}
-	arm_func_end InitBulkItem
-
 	arm_func_start BulkItemToItem
 BulkItemToItem: ; 0x0200CFF0
 	stmdb sp!, {r3, r4, r5, lr}
diff --git a/include/item.h b/include/item.h
index 0ababff7..6f19b699 100644
--- a/include/item.h
+++ b/include/item.h
@@ -1661,4 +1661,10 @@ struct item_data_entry
     /* 0xE */ u8 flags;
 };
 
+struct bulk_item
+{
+    /* 0x0 */ s16 id;
+    /* 0x2 */ u16 quantity;
+};
+
 #endif //PMDSKY_ITEM_H
diff --git a/include/item_util_4.h b/include/item_util_4.h
index 552e6388..6cd20d75 100644
--- a/include/item_util_4.h
+++ b/include/item_util_4.h
@@ -3,12 +3,6 @@
 
 #include "item.h"
 
-struct bulk_item
-{
-    /* 0x0 */ s16 id;
-    /* 0x2 */ u16 quantity;
-} BulkItem;
-
 BOOL IsLosableItem(struct item* item);
 bool8 IsTreasureBox(s16 item_id);
 bool8 IsStorableItem(s16 item_id);
@@ -19,7 +13,7 @@ bool8 IsTicketItem(s16 item_id);
 void InitItem(struct item* item, s16 id, s16 quantity, bool8 isSticky);
 void InitStandardItem(struct item* item, s16 id, bool8 isSticky);
 void sub_0200CF6C(struct item* item, s16 id, s16 quantity, bool8 isSticky);
-//void InitBulkItem(struct bulk_item* item, s16 id);
+void InitBulkItem(struct bulk_item* item, s16 id);
 
 #endif //PMDSKY_ITEM_UTIL_4_H
 
diff --git a/src/item_util_4.c b/src/item_util_4.c
index cd663a12..23384c27 100644
--- a/src/item_util_4.c
+++ b/src/item_util_4.c
@@ -107,7 +107,7 @@ void InitItem(struct item* item, s16 id, s16 quantity, bool8 isSticky)
     s32 category;
     s32 to;
 
-    if (id != 0) {
+    if (id != ITEM_NOTHING) {
         item->flags = ITEM_FLAG_EXISTS;
         item->id = id;
         item->held_by = 0;
@@ -124,7 +124,7 @@ void InitItem(struct item* item, s16 id, s16 quantity, bool8 isSticky)
                 item->quantity = 0;
             }
         }
-        if (isSticky != 0) {
+        if (isSticky) {
             item->flags |= ITEM_FLAG_STICKY;
         }
         return;
@@ -143,3 +143,24 @@ void sub_0200CF6C(struct item* item, s16 id, s16 quantity, bool8 isSticky)
 {
     InitItem(item, id, quantity, isSticky);
 }
+
+void InitBulkItem(struct bulk_item* item, s16 id) {
+    s32 to;
+
+    item->id = id;
+    if (id != ITEM_NOTHING) {
+        if (IsThrownItem(id)) {
+            to = GetThrownItemQuantityLimit(id, 1);
+            item->quantity = RandRangeSafe(GetThrownItemQuantityLimit(id, 0), to);
+        }
+        else if (GetItemCategory(id) == CATEGORY_POKE) {
+            item->quantity = 1;
+        } else {
+            item->quantity = 0;
+        }
+    }
+    else
+    {
+        item->quantity = 0;
+    }
+}

From b3d4fda4a157eb529666254b359374d3ef27e3ef Mon Sep 17 00:00:00 2001
From: Seth Barberee <seth.barberee@gmail.com>
Date: Sat, 3 Jan 2026 13:10:56 -0800
Subject: [PATCH 4/4] fix build

---
 src/item_util.c   | 2 --
 src/item_util_4.c | 3 ---
 2 files changed, 5 deletions(-)

diff --git a/src/item_util.c b/src/item_util.c
index f3c34306..ae01f12d 100644
--- a/src/item_util.c
+++ b/src/item_util.c
@@ -1,8 +1,6 @@
 #include "item_util.h"
 #include "item_util_2.h"
 
-extern s32 GetItemMoveId(s32 item_id);
-
 enum item_category GetItemCategoryVeneer(s16 item_id)
 {
     return GetItemCategory(item_id);
diff --git a/src/item_util_4.c b/src/item_util_4.c
index 23384c27..ddc0480b 100644
--- a/src/item_util_4.c
+++ b/src/item_util_4.c
@@ -4,9 +4,6 @@
 #include "item_util.h"
 #include "item_util_2.h"
 
-extern s32 GetItemSellPrice(s16);
-extern s32 GetItemBuyPrice(s16);
-extern s32 GetThrownItemQuantityLimit(s16, s32);
 extern s16 RandRangeSafe(s32, s32);
 extern s16 _020A18BC[10];