VLib
by G_Mungus
VLib is a utility library for Valkyrien Skies addons, with shared functions that other ship mods can call from their code and datapacks.
What it does
The library covers several separate areas. A collision fix changes how players move through tight vertical openings such as trapdoors on rotated ships. Per-dimension settings let a datapack set the default ship gravity and ship scale for each dimension, and the same values can be read or changed in code through the dimension settings manager.
Other parts serve structure builders. Data-driven features can make Minecraft or datapack structures generate as ships. The game utilities provide assembly with or without a blacklist, and they can read and save ship structure templates. Modpack makers and mod developers are the intended audience, along with players who want these behaviors on a server.
VLib needs Fabric API and Valkyrien Skies. It is published for Fabric and Forge under the Apache License 2.0 and is open source. The server must run it, while players may add it; a client without it can still join. Files exist for 1.20.1 only, the latest being 1.20.1-0.1.1 from 2025-12-25, on the beta channel. Four other catalog mods require it.
Key features
Tight-space collision fix
Players moving through trapdoors and similar gaps on rotated ships keep expected movement.
Per-dimension ship gravity
A datapack sets the default ship gravity for each dimension without code changes.
Per-dimension ship scale
A datapack sets the default ship scaling for each dimension.
Structures as ships
Data-driven settings make Minecraft or datapack structures generate as ships.
Compatibility
Latest build for each game version and loader.
Only full game releases are shown. This mod publishes no snapshot builds.
Requirements
Dependencies declared by the latest file for each loader.
Required 2
Required by 4 mods
Use cases
Modpack configuration
Pack makers set gravity and scale per dimension through datapacks rather than writing code.
Ship structure building
Developers assemble structures with or without a blacklist and save ship templates for reuse.
Who it’s for: Mod developers building Valkyrien Skies addons and modpack makers who want consistent ship behavior across dimensions.
How it compares
Vtil is client and server, open source under the GNU General Public License v3.0 or later, and covers 1.20.1 on Fabric and Forge. VS2 for Complete Config is also client and server and open source, but it is released under the GNU Lesser General Public License v3.0 only. VLib differs by being server-required with an optional client, and by using the Apache License 2.0.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| VLib | Fabric and Forge | 1.20.1 | Server required, client optional | 2025-12-25 |
| Vtil | Fabric and Forge | 1.20.1 | Client and server | 2026-01-05 |
| VS2 for Complete Config | Fabric and Forge | 1.20.1 | Client and server | 2024-07-11 |
Questions
Does VLib need to be installed on the client?
Which loaders does VLib support?
Can VLib settings be changed without code?
In the catalog
VLib is one of 3,514 Library mods on ModsFinder, and one of 2,348 Library mods for Fabric. 34,764 mods support Minecraft 1.20.1.
More from G_Mungus
Similar mods
What the author says
VLib is a library mod for Valkyrien Skies that provides many utilities for players, modpack makers, and mod developers. More detailed information can be found on the the wiki.
Official listing
- Modrinth page
- modrinth.com/mod/vlib
- Owner
- G_Mungus
- Published
- 2025-01-06
- Updated on Modrinth
- 2025-12-25
- Facts verified
- 2026-10-15