From b046f33b3c30da618b494ac5be61a4e7ffc6e956 Mon Sep 17 00:00:00 2001
From: Aetias <aetias@outlook.com>
Date: Tue, 30 Apr 2024 18:38:48 +0200
Subject: [PATCH] Decomp `ItemManager::LoadDungeonItemModels`

---
 asm/ov00/Item/ItemManager.s         | 45 -----------------------------
 include/DTCM/UnkStruct_027e0f78.hpp | 15 ++++++++++
 include/Item/ItemManager.hpp        |  1 +
 src/00_Core/Item/ItemManager.cpp    | 25 ++++++++++++++++
 4 files changed, 41 insertions(+), 45 deletions(-)
 create mode 100644 include/DTCM/UnkStruct_027e0f78.hpp

diff --git a/asm/ov00/Item/ItemManager.s b/asm/ov00/Item/ItemManager.s
index 74b706e5..cfbe2a4c 100644
--- a/asm/ov00/Item/ItemManager.s
+++ b/asm/ov00/Item/ItemManager.s
@@ -3,51 +3,6 @@
 
 	.text
 
-	.global _ZN11ItemManager21LoadDungeonItemModelsEv
-	thumb_func_start _ZN11ItemManager21LoadDungeonItemModelsEv
-_ZN11ItemManager21LoadDungeonItemModelsEv: ; 0x020ae5fc
-	push {r3, r4, r5, r6, r7, lr}
-	ldr r7, _020ae644 ; =data_027e0f78
-	add r5, r0, #0
-	mov r4, #0
-_020ae604:
-	mov r0, #1
-	lsl r0, r0, #8
-	ldr r0, [r5, r0]
-	cmp r0, #0
-	beq _020ae638
-	cmp r4, #2
-	beq _020ae61a
-	cmp r4, #3
-	beq _020ae61a
-	cmp r4, #4
-	bne _020ae622
-_020ae61a:
-	ldr r2, [r7]
-	ldrh r1, [r2, #0x1e]
-	ldrh r6, [r2, #0x1c]
-	b _020ae628
-_020ae622:
-	ldr r2, [r7]
-	ldrh r1, [r2, #0x1a]
-	ldrh r6, [r2, #0x18]
-_020ae628:
-	blx func_020196bc
-	mov r0, #1
-	lsl r0, r0, #8
-	ldr r0, [r5, r0]
-	add r1, r6, #0
-	blx func_020196fc
-_020ae638:
-	add r4, r4, #1
-	add r5, r5, #4
-	cmp r4, #5
-	blt _020ae604
-	pop {r3, r4, r5, r6, r7, pc}
-	nop
-	thumb_func_end _ZN11ItemManager21LoadDungeonItemModelsEv
-_020ae644: .word data_027e0f78
-
 	.global _ZN11ItemManager18func_ov00_020ae648Ejjj
 	thumb_func_start _ZN11ItemManager18func_ov00_020ae648Ejjj
 _ZN11ItemManager18func_ov00_020ae648Ejjj: ; 0x020ae648
diff --git a/include/DTCM/UnkStruct_027e0f78.hpp b/include/DTCM/UnkStruct_027e0f78.hpp
new file mode 100644
index 00000000..04353f37
--- /dev/null
+++ b/include/DTCM/UnkStruct_027e0f78.hpp
@@ -0,0 +1,15 @@
+#pragma once
+
+#include "global.h"
+#include "types.h"
+
+struct UnkStruct_027e0f78 {
+    /* 00 */ unk8 mUnk_00[0x18];
+    /* 18 */ u16 mUnk_18;
+    /* 1a */ u16 mUnk_1a;
+    /* 1c */ u16 mUnk_1c;
+    /* 1e */ u16 mUnk_1e;
+    /* 20 */
+};
+
+extern UnkStruct_027e0f78 *data_027e0f78;
diff --git a/include/Item/ItemManager.hpp b/include/Item/ItemManager.hpp
index 666ae6de..46c2d70b 100644
--- a/include/Item/ItemManager.hpp
+++ b/include/Item/ItemManager.hpp
@@ -9,6 +9,7 @@ extern "C" {
 #include "lib/math.h"
 
 #include "Actor/ActorNavi.hpp"
+#include "DTCM/UnkStruct_027e0f78.hpp"
 #include "Save/AdventureFlags.hpp"
 #include "Item/Item.hpp"
 #include "Map/MapManager.hpp"
diff --git a/src/00_Core/Item/ItemManager.cpp b/src/00_Core/Item/ItemManager.cpp
index 03cc2f19..b77717eb 100644
--- a/src/00_Core/Item/ItemManager.cpp
+++ b/src/00_Core/Item/ItemManager.cpp
@@ -889,3 +889,28 @@ ARM bool ItemManager::HasPurplePotion() const {
     }
     return false;
 }
+
+extern "C" void func_020196bc(ItemModel *param1, unk32 param2);
+extern "C" void func_020196fc(ItemModel *param1, unk32 param2);
+THUMB void ItemManager::LoadDungeonItemModels() {
+    for (s32 i = 0; i < DungeonItemModelId_COUNT; ++i) {
+        if (mDungeonItemModels[i] == NULL) continue;
+
+        u16 unk1, unk2;
+        switch (i) {
+            case DungeonItemModelId_RoundCrystal:
+            case DungeonItemModelId_SquareCrystal:
+            case DungeonItemModelId_TriangleCrystal: {
+                unk1 = data_027e0f78->mUnk_1e;
+                unk2 = data_027e0f78->mUnk_1c;
+            } break;
+
+            default: {
+                unk1 = data_027e0f78->mUnk_1a;
+                unk2 = data_027e0f78->mUnk_18;
+            } break;
+        }
+        func_020196bc(mDungeonItemModels[i], unk1);
+        func_020196fc(mDungeonItemModels[i], unk2);
+    }
+}