ProbablyBackpacks

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CAUTION

⚠️ NO NEW CONTENT UPDATES FOR THIS VERSION

This standard version of Probably Backpacks is feature-locked and will NOT receive any new content updates or features. It will only receive maintenance updates to maintain compatibility with newer Minecraft/Paper releases.

Want new features, security, party storage, and advanced upgrades?
Upgrade to Probably Backpacks Premium on BuiltByBit to get access to:

• PIN-Pad Security Locks — Prevent pickpocketing with a 4-digit code GUI
• Synchronized Party Storage — Link backpacks across teammates in real-time
• Smart Auto Smelter — Intelligently route items to furnace/smoker/blast modules
• XP Sponge & Auto Repair — Absorb XP orbs and auto-repair durability
• Fluid Tank Upgrade — Store up to 10 buckets of fluid
• Auto Sort Upgrade & Whitelist Filters
• Stealth Pickpocketing & Custom 3D Cosmetic Skins

Click here to get Probably Backpacks Premium on BuiltByBit!

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✦ What is Probably Backpacks? ✦

Probably Backpacks adds a complete tiered backpack system to your Minecraft server. Players craft backpacks from Leather all the way up to Netherite — each tier offering more storage and more upgrade slots.

Backpacks are equipped in the CuriosPaper Back slot and are visible on the player's back as a 3D model! This plugin is a CuriosPaper addon, hooking into the accessory system to provide a seamless experience with custom textures, real-time dyeing, and a powerful upgrade system.

This plugin requires CuriosPaper to function!

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🚀 What's New in v2.4

• Autonomous Pickup Task (PickupTask): Dedicated background task for the Pickup Upgrade that checks a 1.5-block radius around players to collect nearby item drops directly into active backpack storage (smartly skips duplicate work if MagnetTask is active).
• Modern Paper & 1.21.4+ Version Parsing: Overhauled VersionUtil with regex matching to support Paper build version strings (e.g., 26.2.build.48-alpha) with automatic fallback to Bukkit.getVersion().
• Robust Item & Component Sanitization: Added multi-layered fallback deserialization in BackpackData to strip unregistered/legacy enchantments and invalid item components cleanly.
• GUI Slot Bounds Protection: Added slot boundary safety checks during inventory click processing.

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✦ Features ✦

🎒 Core Backpack System

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✦ Backpack Tiers ✦

Each tier requires the previous backpack as an ingredient — creating a natural progression chain!

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✦ Upgrades ✦

Upgrades are placed into the backpack's upgrade slots to grant powerful abilities:

🛠️ Utility Upgrades

🧺 Automation Upgrades

🍳 Cooking Upgrades

🗄️ Storage Upgrades

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✦ Dyeing & Mobs ✦

🎨 Dyeing System

Express yourself with over 16 unique colors! Leather backpacks can be dyed directly within the backpack inventory.

• Simple Dyeing: No complex GUIs! Simply drop any Minecraft dye onto the dye button in the backpack interface.
• Remove Color: Use a Water Bucket on the dye button to clear the color.
• Live Updates: The 3D model on your back updates instantly when you change the color.

🧟 Mob Drops

Backpacks aren't just for players anymore! Zombies and Skeletons have a small chance to spawn wearing a backpack.

• Visual Models: You can see exactly which tier of backpack a mob is wearing.
• Lootable: Defeat the mob for a chance to collect their backpack!
• Configurable: Adjust spawn rates and which tiers mobs can carry in the config.yml.

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✦ Recipes ✦

🎒 Backpack Recipes (click to expand)

🟤 Leather Backpack Slots: 27 · Upgrade Slots: 1 The starting tier backpack. Requires basic materials to craft. String Leather String String Chest String Leather Leather Leather

🟠 Copper Backpack Slots: 45 · Upgrade Slots: 2 An upgrade from leather — requires copper ingots and a Leather Backpack. Copper Ingot Copper Ingot Copper Ingot Copper Ingot Leather Backpack Copper Ingot Copper Ingot Copper Ingot Copper Ingot

⚪ Iron Backpack Slots: 54 · Upgrade Slots: 3 Solid mid-tier storage. Requires iron ingots and a Copper Backpack. Iron Ingot Iron Ingot Iron Ingot Iron Ingot Copper Backpack Iron Ingot Iron Ingot Iron Ingot Iron Ingot

🟡 Gold Backpack Slots: 81 · Upgrade Slots: 4 High-capacity storage with plenty of room for upgrades. Gold Ingot Gold Ingot Gold Ingot Gold Ingot Iron Backpack Gold Ingot Gold Ingot Gold Ingot Gold Ingot

🔵 Diamond Backpack Slots: 108 · Upgrade Slots: 5 Premium-tier storage. Only one step away from the ultimate backpack. Diamond Diamond Diamond Diamond Gold Backpack Diamond Diamond Diamond Diamond

🟣 Netherite Backpack Slots: 120 · Upgrade Slots: 6 The ultimate backpack. Features fire and lava immunity (won't burn when dropped). Crafted at a Smithing Table using the Netherite Upgrade template. Component Item Template Netherite Upgrade Smithing Template Base Diamond Backpack Addition Netherite Ingot

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⬆️ Upgrade Recipes (click to expand)

🛠️ Upgrade Base The fundamental component for crafting most upgrades. String Iron Ingot String Iron Ingot Leather Iron Ingot String Iron Ingot String

🔧 Crafting Station Adds a portable crafting table to your backpack. Oak Planks Crafting Table Oak Planks Oak Planks Upgrade Base Oak Planks Oak Planks Crafting Table Oak Planks

📥 Pickup Upgrade Auto-collects picked-up items into the backpack. Piston String Upgrade Base String Redstone Redstone Redstone

🧲 Magnet Upgrade Pulls nearby items directly into your backpack. Requires the Pickup Upgrade. Ender Pearl Iron Ingot Ender Pearl Iron Ingot Pickup Upgrade Iron Ingot Redstone Diamond Lapis Lazuli

🍖 Feeding Upgrade Auto-feeds the player using food stored in the backpack. Golden Carrot Golden Apple Upgrade Base Glistering Melon Slice Ender Pearl

🔄 Refill Upgrade Auto-refills hotbar items from the backpack as they deplete. Ender Pearl Iron Ingot Upgrade Base Iron Ingot Redstone Chest Redstone

📦 Compacting Upgrade Auto-compresses items into their block forms. Iron Ingot Piston Iron Ingot Piston Upgrade Base Piston Redstone Piston Redstone

⚔️ Tool Swapper Auto-swaps to the best tool for the block you are mining. Redstone Wood Sword Redstone Wood Pick Upgrade Base Wood Axe Iron Ingot Wood Shovel Iron Ingot

🔨 Anvil Upgrade Adds a portable anvil to your backpack. Anvil Diamond Anvil Iron Ingot Upgrade Base Iron Ingot Chest

🎵 Jukebox Upgrade Play music discs directly from your backpack's GUI. Jukebox Iron Ingot Upgrade Base Iron Ingot Redstone

🛠️ Smithing Upgrade A portable Smithing Table for your backpack. Smithing Table Iron Ingot Upgrade Base Iron Ingot Chest

🔥 Smelting Upgrade Smelts items automatically while you travel. Redstone Iron Ingot Redstone Iron Ingot Upgrade Base Iron Ingot Redstone Furnace Redstone

💨 Blasting Upgrade High-speed smelting for ores and materials. Redstone Iron Ingot Redstone Iron Ingot Upgrade Base Iron Ingot Redstone Blast Furnace Redstone

🍖 Smoker Upgrade Rapidly cooks food items while you're on the move. Redstone Iron Ingot Redstone Iron Ingot Upgrade Base Iron Ingot Redstone Smoker Redstone

🟠 Copper Stack Upgrade Increases max stack size in the backpack to 96. Copper Block Copper Block Copper Block Copper Block Upgrade Base Copper Block Copper Block Copper Block Copper Block

⚪ Iron Stack Upgrade Increases max stack size in the backpack to 128. Iron Block Iron Block Iron Block Iron Block Copper Stack Upgrade Iron Block Iron Block Iron Block Iron Block