From 932698a237ab29263d24c56fbd3ffae0402471f7 Mon Sep 17 00:00:00 2001
From: CorranEveryone <81649947+CorranEveryone@users.noreply.github.com>
Date: Wed, 25 Feb 2026 09:32:03 -1000
Subject: [PATCH 1/3] Prevent items from swapping in inventories when the slot
 to move the same items to already has a max stack

---
 src/inventory.rs | 10 +++++++---
 1 file changed, 7 insertions(+), 3 deletions(-)

diff --git a/src/inventory.rs b/src/inventory.rs
index b1e46cd..ef25474 100644
--- a/src/inventory.rs
+++ b/src/inventory.rs
@@ -208,8 +208,10 @@ impl Inventory {
                         ),
                     );
                 } else {
-                    other_inventory.replace_slot_item_stack(end_slot, start_slot_itemstack);
-                    self.replace_slot_item_stack(start_slot, end_slot_itemstack);
+                    if end_slot_itemstack.amount as usize != end_max_stack_amount {
+                        other_inventory.replace_slot_item_stack(end_slot, start_slot_itemstack);
+                        self.replace_slot_item_stack(start_slot, end_slot_itemstack);
+                    }
                 }
             }
         }
@@ -366,7 +368,9 @@ impl Inventory {
                         ),
                     );
                 } else {
-                    self.swap_slots(start_slot, end_slot);
+                    if end_slot_itemstack.amount as usize != end_max_stack_amount {
+                        self.swap_slots(start_slot, end_slot);
+                    }
                 }
             }
         }

From a820f15fdf6058eb3f52c753acdf59fae50f7260 Mon Sep 17 00:00:00 2001
From: CorranEveryone <81649947+CorranEveryone@users.noreply.github.com>
Date: Wed, 25 Feb 2026 09:40:15 -1000
Subject: [PATCH 2/3] Fixed not being able to move items to empty slots unless
 it was from the creative inventory or splitting stacks

---
 src/inventory.rs | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/src/inventory.rs b/src/inventory.rs
index ef25474..ac8aa3e 100644
--- a/src/inventory.rs
+++ b/src/inventory.rs
@@ -208,7 +208,9 @@ impl Inventory {
                         ),
                     );
                 } else {
-                    if end_slot_itemstack.amount as usize != end_max_stack_amount {
+                    if end_slot_itemstack.amount as usize != end_max_stack_amount
+                    && end_slot_itemstack.item_type == ItemType::Air
+                    {
                         other_inventory.replace_slot_item_stack(end_slot, start_slot_itemstack);
                         self.replace_slot_item_stack(start_slot, end_slot_itemstack);
                     }
@@ -368,7 +370,9 @@ impl Inventory {
                         ),
                     );
                 } else {
-                    if end_slot_itemstack.amount as usize != end_max_stack_amount {
+                    if end_slot_itemstack.amount as usize != end_max_stack_amount 
+                    && end_slot_itemstack.item_type == ItemType::Air
+                    {
                         self.swap_slots(start_slot, end_slot);
                     }
                 }

From 08774cfa503680c6cf81c64072234643a3a082fd Mon Sep 17 00:00:00 2001
From: CorranEveryone <81649947+CorranEveryone@users.noreply.github.com>
Date: Wed, 25 Feb 2026 09:58:29 -1000
Subject: [PATCH 3/3] Replace the if x and y statement I made with an if x or y
 statement to fix the last change I made

---
 src/inventory.rs | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/inventory.rs b/src/inventory.rs
index ac8aa3e..f5dd915 100644
--- a/src/inventory.rs
+++ b/src/inventory.rs
@@ -209,7 +209,7 @@ impl Inventory {
                     );
                 } else {
                     if end_slot_itemstack.amount as usize != end_max_stack_amount
-                    && end_slot_itemstack.item_type == ItemType::Air
+                    || end_slot_itemstack.item_type == ItemType::Air
                     {
                         other_inventory.replace_slot_item_stack(end_slot, start_slot_itemstack);
                         self.replace_slot_item_stack(start_slot, end_slot_itemstack);
@@ -371,7 +371,7 @@ impl Inventory {
                     );
                 } else {
                     if end_slot_itemstack.amount as usize != end_max_stack_amount 
-                    && end_slot_itemstack.item_type == ItemType::Air
+                    || end_slot_itemstack.item_type == ItemType::Air
                     {
                         self.swap_slots(start_slot, end_slot);
                     }