Iron Backpacks Mod Wiki

Iron Backpacks is a sophisticated utility mod designed to solve inventory management issues through a system of tiered, modular portable containers. Unlike simple backpack mods, Iron Backpacks allows players to specialize their gear into either massive storage units or high-tech "Mobile Command Centers" capable of automated item manipulation.

Key Features

• Tiered Progression: Four distinct tiers (Basic, Iron, Gold, and Diamond).
• Specializations: Choose between maximizing raw storage slots or maximizing upgrade points for advanced automation.
• Modular Upgrades: Over 20 unique upgrades including auto-pickup, filtering, compacting, and restocking.
• Visual Rendering: Equipped backpacks appear on the player's character model.
• Performance Optimized: Specifically coded to be efficient and compatible with major mods like JEI and Inventory Tweaks.

Starting at the Iron tier, backpacks must be specialized during the crafting process. You must choose between Storage Emphasis (more slots, fewer points) or Upgrade Emphasis (fewer slots, more points).

Note: Slot counts and point values may vary slightly based on server configuration files.

Upgrades are modular components that add functionality to your backpack. In Minecraft, these are applied to the backpack using an Anvil.

Collection & Filtering

• Pickup Upgrade: Automatically pulls items picked up by the player into the backpack. The Advanced version offers more filter slots.
• Filter Upgrade: Allows you to whitelist or blacklist specific items. Available in Basic, Advanced, and Fuzzy (ignores metadata/durability) variants.
• Void Upgrade: Automatically deletes items that match the filter, preventing your inventory from filling with junk like cobblestone.

Item Manipulation

• Compacting Upgrade: Automatically crafts items into their block forms (e.g., Redstone to Redstone Blocks) when picked up. Available in 2x2 and 3x3 variants.
• Decompressing Upgrade: The inverse of compacting; turns blocks back into their base components.
• Restock Upgrade: Automatically refills stacks in your hotbar from the backpack's inventory.
• Resupply Upgrade: Pulls items from nearby chests into the backpack to keep your supplies topped off.
• Quick Deposit: Allows you to shift-right-click a chest to instantly dump the backpack's contents into it.

Utility & Logistics

• Nesting Upgrade: Allows you to place backpacks inside other backpacks while maintaining their functionality.
• Depth Upgrade: Enables upgrades in nested backpacks to function even if the parent backpack is the one equipped.
• Eternity Upgrade: Ensures the backpack and its contents are kept in your inventory upon death (Soulbound).
• Button Upgrade: Adds convenient buttons to the GUI for sorting and moving items between the backpack and player inventory.
• Damage Bar Upgrade: Adds a durability-style bar under the backpack icon to visually indicate how full it is.
• Latch Upgrade: Locks the backpack so only the owner can open it.

Equipping Backpacks

Backpacks can be equipped directly to the player's back. When equipped, they render on the character model. You can set a dedicated keybind (default is often 'B') to open the equipped backpack without having it in your hand.

Applying Upgrades

1. Place your backpack in the first slot of an Anvil.
2. Place the desired Upgrade item in the second slot.
3. If you have enough Upgrade Points and experience levels, you can retrieve the upgraded backpack from the output slot.

Removing Upgrades

To remove an upgrade and reclaim the points, place the backpack in a crafting grid. This will typically strip the upgrades, though specific behavior can depend on the version and configuration.

Crafting follows a linear progression. You must upgrade a lower-tier backpack to reach the next level.

Base Components

• Blank Upgrade: Crafted with 1 Stick (center), 4 Paper (top, bottom, left, right), and 4 String (corners).
• Basic Backpack: Crafted with 1 Chest (center), 4 Leather (top, bottom, left, right), and 4 Wool (corners).

Tier Upgrades

The mod is highly configurable via the ironbackpacks.cfg file. Server owners and modpack authors can adjust:

• Inventory Size: Change the number of rows and columns for every tier.
• Point Costs: Modify how many upgrade points each ability consumes.
• Recipe Tweaks: Enable or disable specific recipes or change required materials.
• Appearance: Adjust tooltip delay and button visibility in the GUI.