PhantomLoot

PhantomLoot is a lightweight, high-performance, 100% server-side instanced looting mod designed for modern Fabric servers. It brings unique, per-player container inventories to your world without requiring players to install any client-side mods. Vanilla clients can connect and experience fully isolated loot seamlessly!

Key Features

• 100% Server-Side: No client-side files required. Fully compatible with vanilla connecting clients.
• Per-Player Instanced Loot: When a player opens a world-generated structure chest, barrel, or shulker box, they get a unique virtual inventory roll. Other players can step up to the exact same chest and get their own fresh loot!
• Persistent Containers: If a player takes only half the items and closes the chest, the mod remembers exactly what they left behind without resetting or changing what other players see.
• Crash & Rollback Protection: Uses a deterministic seeding algorithm derived from the block coordinates, world seed, and player UUID. If a player disconnects or the server crashes mid-loot, their inventory remains exactly identical upon logging back in.
• Double-Chest Synchronization: Smart coordinate tracking automatically pairs double chests to a single master coordinate lookup key, preventing players from double-dipping the left and right sides of a single double chest.
• Anti-Grief Protection: Prevents non-administrative players from breaking unlooted or registered world-gen containers, stopping loot deletion or chest duplication exploits.

Performance & Architecture

Built from the ground up for high-concurrency environments and multi-core server hardware:

• Zero Dependencies: This mod operates completely on raw vanilla mappings and native Mixins. It has strictly zero reliance on the Fabric API, keeping the server footprint extremely small.
• Asynchronous Storage Pipeline: Deep NBT serialization and world-level PersistentState disk-flushing are offloaded entirely to background worker threads. The main game loop handles zero disk I/O, ensuring absolute stability and zero micro-stutters/tick drops.
• Modern Baseline Integration: Built specifically utilizing the type-safe Data Component Type registries introduced in modern Minecraft versions, completely bypassing legacy, laggy NBT inspection methods.

Configuration & Compatibility

Because the mod hooks deeply into the AbstractBlock interaction layer, it works out-of-the-box with all vanilla loot tables and any server-side custom data packs.

Commands & Permissions

• Players with Level 4 Operator permissions can bypass the anti-break protection to remove or modify chests freely.
• Unauthorized break attempts will safely cancel the block destruction packet and notify the player on their action bar.

Support & Optimization Notes

Perfect for community SMP networks, competitive survival servers, and headless Linux deployment hardware. Pair this mod with optimization performance maps for the ultimate lag-free looting experience!

Enhance your server setup! Check out my other server-side mods over at : Fabric Server Essentials