YUNG’s Library is a foundational Minecraft mod for Fabric that powers a suite of world-generation and utility mods by providing shared functions and data structures. While it doesn’t add new gameplay content by itself, this library is required for all of YUNG’s Fabric mods on versions 1.16.5 and above. By including YUNG’s Library in your mods folder, you ensure that any mod built on top of it can register blocks, items, and world features automatically and efficiently, without extra boilerplate code.
Under the hood, YUNG’s Library offers an auto-registration system (on 1.18+), a custom Jigsaw Manager with better performance and flexible pool element types, and a safe-structure locator trigger that only activates if the structure genuinely exists. It also comes with built-in JSON (de)serialization interfaces, lightweight math utilities for vectors and column positions, and handy abstractions like BlockStateRandomizer and ItemRandomizer to simplify adding random blocks or items to custom structures. These tools make it easier for mod developers—especially those focused on Minecraft worldgen—to build complex, performance-tuned features. When you install mods that depend on YUNG’s Library, you’ll benefit from smoother world generation, faster load times, and more reliable custom content.
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