From bb481bc3ccf3e2c355af4df4d12c5d6ebfae3d17 Mon Sep 17 00:00:00 2001
From: judicornadamsfoster <judicornadamsfoster@gmail.com>
Date: Sun, 5 Jul 2026 21:04:20 +0100
Subject: [PATCH] Created Increase item bag capacity (markdown)

---
 Increase-item-bag-capacity.md | 135 ++++++++++++++++++++++++++++++++++
 1 file changed, 135 insertions(+)
 create mode 100644 Increase-item-bag-capacity.md

diff --git a/Increase-item-bag-capacity.md b/Increase-item-bag-capacity.md
new file mode 100644
index 0000000..1e3a410
--- /dev/null
+++ b/Increase-item-bag-capacity.md
@@ -0,0 +1,135 @@
+
+original source: [MapleFall's pokecommunity post](https://www.pokecommunity.com/threads/simple-modifications-directory.416647/page-20#post-10523495) and 
+[Lunos' 999 items branch](https://github.com/LOuroboros/pokeemerald/tree/999items)
+
+This code increases the bag item capacity from 99 up to 999 items
+
+<img width="240" height="160" alt="pokeemerald-0" src="https://github.com/user-attachments/assets/c21f50bc-1b26-4d4d-9ce5-72c7a544583a" />
+<img width="240" height="160" alt="pokeemerald-2" src="https://github.com/user-attachments/assets/b440bc4f-5ff1-4e57-a212-8eb5e9ff70f8" />
+
+
+> `include/shop.h` is now at `src/shop.c` and is slightly different code to the original
+
+__________
+
+### include/constants/items.h
+
+change `#define MAX_BAG_ITEM_CAPACITY  99` (at line 451)  
+to
+```
+#define MAX_BAG_ITEM_CAPACITY  999
+```
+__
+
+change `#define BAG_ITEM_CAPACITY_DIGITS 2` (at line 455)  
+to
+```
+#define BAG_ITEM_CAPACITY_DIGITS 3
+```
+
+__________
+
+### include/global.h
+
+in section `struct PyramidBag` (line 224)  
+change `u8 quantity[FRONTIER_LVL_MODE_COUNT][PYRAMID_BAG_ITEMS_COUNT];`  
+to
+```
+    u16 quantity[FRONTIER_LVL_MODE_COUNT][PYRAMID_BAG_ITEMS_COUNT];
+```
+
+__________
+
+### src/shop.c
+(data no longer stored in include/shop.h)
+
+in section `struct ShopData` (line 94)  
+change `u8 maxQuantity;`  
+to
+```
+    u16 maxQuantity;
+```
+
+__________
+
+### src/battle_pyramid_bag.c
+
+in these 3 sections (they are all after each other)  
+`static void SwapItems(u8 id1, u8 id2)` (line 725)  
+`static void MovePyramidBagItemSlotInList(u8 from, u8 to)` (line 735)  
+`static void CompactItems(void)` (line 768)  
+
+change `u8 *quantities = gSaveBlock2Ptr->frontier.pyramidBag.quantity[gSaveBlock2Ptr->frontier.lvlMode];`  
+to
+```
+    u16 *quantities = gSaveBlock2Ptr->frontier.pyramidBag.quantity[gSaveBlock2Ptr->frontier.lvlMode];
+```
+__
+
+in section void `TryStoreHeldItemsInPyramidBag(void)` (line 1402)  
+change `u8 *newQuantities = Alloc(PYRAMID_BAG_ITEMS_COUNT * sizeof(*newQuantities));`  
+to
+```
+    u16 *newQuantities = Alloc(PYRAMID_BAG_ITEMS_COUNT * sizeof(*newQuantities));
+```
+
+__________
+
+### src/item.c
+
+in these 4 sections (they're all after each other):  
+`static bool8 CheckPyramidBagHasItem(u16 itemId, u16 count)` (line 685)  
+`static bool8 CheckPyramidBagHasSpace(u16 itemId, u16 count)` (line 707)  
+`bool8 AddPyramidBagItem(u16 itemId, u16 count)` (line 729)  
+`bool8 RemovePyramidBagItem(u16 itemId, u16 count)` (line 802)  
+
+change `u8 *quantities = gSaveBlock2Ptr->frontier.pyramidBag.quantity[gSaveBlock2Ptr->frontier.lvlMode];`  
+to
+```
+    u16 *quantities = gSaveBlock2Ptr->frontier.pyramidBag.quantity[gSaveBlock2Ptr->frontier.lvlMode];
+```
+
+in these 2 sections:  
+`bool8 AddPyramidBagItem(u16 itemId, u16 count)` (line 729)  
+`bool8 RemovePyramidBagItem(u16 itemId, u16 count)` (line 802)  
+
+change `u8 *newQuantities = Alloc(PYRAMID_BAG_ITEMS_COUNT * sizeof(*newQuantities));`  
+to
+```
+    u16 *newQuantities = Alloc(PYRAMID_BAG_ITEMS_COUNT * sizeof(*newQuantities));
+```
+
+__________
+
+### src/scrcmd.c
+
+> these 4 sections are after each other
+
+__
+in section `bool8 ScrCmd_additem(struct ScriptContext *ctx)` (line 488)  
+change `gSpecialVar_Result = AddBagItem(itemId, (u8)quantity);`  
+to
+```
+    gSpecialVar_Result = AddBagItem(itemId, quantity);
+```
+__
+in section `bool8 ScrCmd_removeitem(struct ScriptContext *ctx)` (line 497)  
+change `gSpecialVar_Result = RemoveBagItem(itemId, (u8)quantity);`  
+to
+```
+    gSpecialVar_Result = RemoveBagItem(itemId, quantity);
+```
+__
+in section `bool8 ScrCmd_checkitemspace(struct ScriptContext *ctx)` (line 506)  
+change `gSpecialVar_Result = CheckBagHasSpace(itemId, (u8)quantity);`  
+to
+```
+    gSpecialVar_Result = CheckBagHasSpace(itemId, quantity);
+```
+
+in section `bool8 ScrCmd_checkitem(struct ScriptContext *ctx)` (line 515)  
+change `gSpecialVar_Result = CheckBagHasItem(itemId, (u8)quantity);`  
+to
+```
+    gSpecialVar_Result = CheckBagHasItem(itemId, quantity);
+```