
VLib
A utility lib for Valkyrien Skies addons.
About this Mod
VLib is a library mod for Valkyrien Skies that provides many utilities for players, modpack makers, and mod developers.
For Players / Modpack Makers
- VS Player Collision Bug Fix: Going through tight vertical spaces such as trapdoors on ships will now behave as expected when the ship is rotated.
- Automatic Modded Block Mass Calculation: run
/vlib generateMassesand VLib will calculate block mass estimates for all modded blocks. It will save the masses and bundle them into a jar file in your mods folder - Assembly Stick: Right click on a build to instantly assemble it as a ship! (NOTE: this feature is currently incompatible with C2ME)
- Per-Dimension Ship Gravity: Allows you to set the default ship gravity per dimension with a datapack
- Per-Dimension Ship Scale: Allows you to set the default ship scaling per dimension with a datapack
For Developers
- Data driven features for setting MC (or datapack) structures to generate as ships
- VLibGameUtils provides functions for assembly (with or without blacklist), and getting and saving ship structure templates.
- DimensionSettingsManager allows you to query or set default ship gravity and scale per dimension (via code or datapack)
More detailed information can be found on the the wiki.
Available Versions
How to Install VLib on Your Server
Order Server
Order a Minecraft Java server with at least 3 GB RAM (4 GB recommended).
Set fabric Loader
In the panel under "Egg", select the fabric loader and matching Minecraft version (1.20.1).
Install Mod
Open the mod browser in the dashboard and search for "VLib". Click "Install" – done! Alternatively, upload the .jar via SFTP to the /mods folder.
Compatibility
Mod Loaders
Minecraft Versions
1.20.1
Server-side
✓ RequiredRecommended RAM
4 GB(min. 3 GB)Frequently Asked Questions
VLib 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 VLib compatible with fabric and forge?
VLib officially supports fabric, forge for Minecraft 1.20.1. Note: Forge and Fabric mods are NOT cross-compatible – pick one loader and stick with it. The Mado dashboard automatically detects incompatible loader combinations.
Server lagging with VLib – how to optimize performance?
Recommended RAM: 4 GB (per 8 players). Use /spark profiler to check if VLib 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.
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Rent Modded Server
Install VLib with just one click on your server.