From 86889daa658ee09a7a76008627aeeeb9f25cb365 Mon Sep 17 00:00:00 2001
From: Aetias <aetias@outlook.com>
Date: Tue, 30 Apr 2024 17:49:06 +0200
Subject: [PATCH] Decomp `ItemManager::GiveKeys`

---
 asm/ov00/Item/ItemManager.s      | 27 +--------------------------
 include/Map/Course.hpp           |  2 ++
 src/00_Core/Item/ItemManager.cpp |  8 +++++++-
 3 files changed, 10 insertions(+), 27 deletions(-)

diff --git a/asm/ov00/Item/ItemManager.s b/asm/ov00/Item/ItemManager.s
index b17db746..07ae53b7 100644
--- a/asm/ov00/Item/ItemManager.s
+++ b/asm/ov00/Item/ItemManager.s
@@ -2,31 +2,6 @@
     .include "ov00/Item/ItemManager.inc"
 
 	.text
-	.global _ZN11ItemManager8GiveKeysEj
-	thumb_func_start _ZN11ItemManager8GiveKeysEj
-_ZN11ItemManager8GiveKeysEj: ; 0x020ae368
-	push {r4, lr}
-	ldr r0, _020ae38c ; =gMapManager
-	add r4, r1, #0
-	ldr r0, [r0]
-	blx _ZN10MapManager10GetNumKeysEv
-	add r1, r4, r0
-	cmp r1, #8
-	blt _020ae37c
-	mov r1, #8
-_020ae37c:
-	cmp r1, #0
-	bgt _020ae382
-	mov r1, #0
-_020ae382:
-	ldr r0, _020ae38c ; =gMapManager
-	ldr r0, [r0]
-	blx _ZN10MapManager10SetNumKeysEi
-	pop {r4, pc}
-	.align 2, 0
-	thumb_func_end _ZN11ItemManager8GiveKeysEj
-_020ae38c: .word gMapManager
-
 	.global _ZNK11ItemManager15GetEquippedItemEv
 	arm_func_start _ZNK11ItemManager15GetEquippedItemEv
 _ZNK11ItemManager15GetEquippedItemEv: ; 0x020ae390
@@ -57,7 +32,7 @@ _ZN11ItemManager17EquipPreviousItemEv: ; 0x020ae3c0
 	bx ip
 	.align 2, 0
 	arm_func_end _ZN11ItemManager17EquipPreviousItemEv
-_020ae3cc: .word _ZN11ItemManager15SetEquippedItemEi - 1
+_020ae3cc: .word _ZN11ItemManager15SetEquippedItemEi
 
 	.global _ZN11ItemManager13ForceEquipItemEi
 	thumb_func_start _ZN11ItemManager13ForceEquipItemEi
diff --git a/include/Map/Course.hpp b/include/Map/Course.hpp
index 1768ae85..352cae1b 100644
--- a/include/Map/Course.hpp
+++ b/include/Map/Course.hpp
@@ -8,6 +8,8 @@
 #include "Physics/AABB.hpp"
 #include "System/SysNew.hpp"
 
+#define MAX_KEYS 8
+
 typedef unk32 CourseType;
 enum CourseType_ {
     CourseType_Normal = 0,
diff --git a/src/00_Core/Item/ItemManager.cpp b/src/00_Core/Item/ItemManager.cpp
index baf6e76b..ac550e81 100644
--- a/src/00_Core/Item/ItemManager.cpp
+++ b/src/00_Core/Item/ItemManager.cpp
@@ -1,5 +1,4 @@
 #include "Item/ItemManager.hpp"
-#include "Map/MapManager.hpp"
 
 extern u32 *data_027e0ce0[];
 
@@ -785,3 +784,10 @@ ARM void ItemManager::GiveRupees(s16 amount, bool param2) {
 ARM unk32 ItemManager::GetNumKeys() const {
     return gMapManager->GetNumKeys();
 }
+
+THUMB void ItemManager::GiveKeys(u32 amount) {
+    s32 keys = amount + gMapManager->GetNumKeys();
+    if (keys >= MAX_KEYS) keys = MAX_KEYS;
+    if (keys <= 0) keys = 0;
+    gMapManager->SetNumKeys(keys);
+}