Lib39

Lib39

Useful mixins, events, and utilities originating in Yttr.

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28.4K Downloads
fabricquiltgame-mechanicslibraryutility
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About this Mod

Lib39 is a loose collection of utilities, mixins, events, etc originating in our content mod Yttr — people constantly talk about "stealing" mixins from Yttr since it has so many random useful things in it, so we decided it'd be a good thing to split it up into a library.

39 is the atomic number of Yttrium. You can pronounce it as "lib thirty nine", "lib three nine", "lib miku", whatever you want.

Getting Started

Lib39 is distributed on the Sleeping Town Maven. Merge the following with your build.gradle:

repositories {
	maven {
    	url 'https://repo.sleeping.town'
        content {
        	includeGroup 'com.unascribed'
        }
    }
}

dependencies {
	modApi include("com.unascribed:lib39-core:2.0.7+1.20.1")
	// put any other modules you want here
	// loom won't JiJ transitive deps, so you need to include all of them
}

Lib39 is also distributed on Modrinth, but you are strongly encouraged to JiJ the modules. They're small.

Exact module sizes when JIJ'd if you care
Module Size
Lockpick 4.38KiB
AQI 5.20KiB
Util 5.58KiB
Ripple 6.06KiB
Sandman 6.56KiB
Deferral 6.57KiB
Crowbar 6.83KiB
Dessicant 9.23KiB
Wrangle 9.62KiB
Recoil 9.79KiB
Phantom 12.10KiB
Mesh 13.99KiB
Weld 16.69KiB
Waypoint 22.33KiB
Core 26.12KiB
Tunnel 27.85KiB
Machination 33.06KiB
Keygen 34.88KiB
Total 257KiB

Replace core with whatever the module (or modules) you want is/are.

Lib39 1.4 and earlier only support 1.19-1.19.2. Lib39 1.5 adds 1.18.2 and 1.19.3 support, and a series of "experimental" builds provide 1.20.1 support. Lib39 2.0 is API-compatible with 1.x and is presently only available for 1.20.1, and is developed in tandem with Yttr.

Modules

  • Core
    Random utility classes such as AutoRegistry, AutoMixin, and shared classes with the other modules.
    Also contains random small tidbits, such as crafting sounds.
  • Lockpick
    Mixins to allow removing artificial limits, such as model rotation angles, crafting recipe sizes,
    and more. Various other related utilities as well, such as the ability to inherit elements from
    parent models.
  • Ripple
    Allows customizing splash texts.
  • Tunnel
    Adds a convenient networking system based on Concrete Network from 1.12.
  • Phantom
    Adds the ability to "phase" blocks out of the world temporarily. The blocks are never removed from
    the world, simply hidden.
  • Waypoint
    Adds an additional baked world layer with additive blending for rendering various kinds of glowy
    effects.
  • Weld
    Adds a "big blocks" system for creating "prefab" blocks like vanilla beds, but way nicer and with
    theoretically no size limit.
  • Sandman
    Adds the ability to make items "always tick", leveraging random ticks.
  • Crowbar
    Adds events for low-level world generation phases, such as constructing surface rules, and raw
    access to chunks during the surface and population phases for invoking custom generators.
  • Keygen
    Adds the ability to load music in XM, S3M, and MOD format via IBXM2.
  • Dessicant
    Implements "logical defaults" for loot tables, and automatically manages recipe unlocks based on a
    "discovered_by" key in recipe JSONs. Blockstates and block/item models soon.
  • Machination
    Adds new recipe types, such as a "soaking" recipe for throwing items in a fluid and a "smashing" recipe for crushing a block between two others with a piston. Comes with EMI support.
  • Recoil
    Events to let you mess with the camera and FOV, and a way to suppress vanilla behavior and catch raw attack/use. Everything you need to make a satisfying gun mod, basically.
  • Util
    Random utility classes. No docs yet.
  • AQI
    Fixes vanilla particle rendering behind translucent blocks on Fancy/Fast graphics by rendering in two passes, like pre-1.14.
  • Mesh
    Adds an efficient graph-based block network system, for pipes and the like. No docs yet.
  • Wrangle
    Adds a "control hints" system. No docs yet.

Former modules

Future modules

Yttr has a lot of weird mixins and utilities in it, and I'd be here a while were I to factor them all out at once. Here's some things I want to separate out but haven't gotten around to yet:

  • Equivalence
    Adds a "substitutes" system, for making items functionally the same as others in recipe ingredients and tags.
  • Conflagration
    Adds a CSS-based configuration system and a framework for making GUIs that interact with it.

Available Versions

2.0.12+1.20.1release
MC 1.20.1fabric, quilt
December 3, 2025
v1.4.2release
MC 1.19.1, 1.19.2fabric, quilt
December 29, 2022
v1.4.1release
MC 1.19.1, 1.19.2fabric, quilt
December 24, 2022
v1.4.0release
MC 1.19.1, 1.19.2fabric, quilt
December 18, 2022
v1.3.4release
MC 1.19.1, 1.19.2fabric, quilt
December 12, 2022

How to Install Lib39 on Your Server

1

Order Server

Order a Minecraft Java server with at least 3 GB RAM (4 GB recommended).

2

Set fabric Loader

In the panel under "Egg", select the fabric loader and matching Minecraft version (1.20.1).

3

Install Mod

Open the mod browser in the dashboard and search for "Lib39". Click "Install" – done! Alternatively, upload the .jar via SFTP to the /mods folder.

Compatibility

Mod Loaders

fabricquilt

Minecraft Versions

1.20.1, 1.19.3, 1.19.2 (+2 more)

Server-side

Required

Recommended RAM

4 GB(min. 3 GB)

Frequently Asked Questions

Lib39 server crashes on startup – what to do?

Most common cause: wrong fabric version or insufficient RAM. Check the server log (latest.log) for "OutOfMemoryError" or "Mixin" errors. With Mado Hosting: ensure at least 3 GB RAM is allocated and the loader matches the mod version (1.20.1). You can switch loaders with one click in the panel.

Is Lib39 compatible with fabric and quilt?

Lib39 officially supports fabric, quilt for Minecraft 1.20.1, 1.19.3, 1.19.2. The Mado dashboard automatically detects incompatible loader combinations.

Server lagging with Lib39 – how to optimize performance?

Recommended RAM: 4 GB (per 8 players). Use /spark profiler to check if Lib39 consumes the most tick time. Common fixes: reduce server view-distance to 8-10, install "performant" or "starlight" as supplementary mods on Forge. With Mado Hosting, your server runs on NVMe SSDs with dedicated CPU cores for minimal latency.

Rent Modded Server

Install Lib39 with just one click on your server.

Recommended RAM
4 GBab €8/mo
Min. 3 GB | +1 GB pro 8 Spieler
Create Server Now
1-Click Mod Install
NVMe SSD Storage
DDoS Protection included

Details

License
MIT License
Server-side
Required

Supported Versions

1.20.11.19.31.19.21.19.11.18.2