Backpack Side GUI

v1.2.5-beta-b Update

This update focuses on multiplayer stability, crafting behavior, and an improved anvil system.

Multiplayer Stability Improvements

• Fixed a potential issue where quick transfer could bypass special container slot logic
• Quick transfer is now limited to moving items from the player inventory or hotbar into the backpack
• It no longer forcibly takes items from machine output slots, crafting result slots, reward slots, or special modded slots
• This reduces the risk of item duplication, item loss, or bypassing other mods’ container logic on multiplayer servers

Crafting Table Improvements

• Fixed drag-splitting inside the crafting utility panel
• Left-click dragging now evenly distributes items across crafting input slots
• Right-click dragging now places one item into each slot
• Double-click collecting now works inside the crafting utility panel
• Crafting remainder handling has been improved
• Recipes such as cake crafting now correctly return empty buckets
• Container-return behavior for vanilla and some modded recipes is now supported

Anvil Improvements

The side GUI anvil utility now supports more vanilla-like behavior:

• Experience level cost
• Item renaming
• Enchanted book merging
• Enchantment conflict checks
• Too Expensive limit handling
• Item repairing
• Combining similar equipment for repairs

Hidden Utility Data Improvements

• Crafting, furnace, anvil, and smithing utility data is stored with the backpack
• If the corresponding upgrade is removed, remaining items are returned to the player
• If the player inventory is full, remaining items are dropped near the player
• Server-side cache cleanup has been improved to reduce long-term memory growth on multiplayer servers

Requirements

• Minecraft 1.20.1
• Forge 47.x
• Sophisticated Backpacks
• Sophisticated Core
• Curios API, optional
• JEI, optional

Notes

This mod is still in beta. Most item interactions are handled server-side, but some special machines, heavily customized containers, or modded recipe systems may still require additional compatibility work.