Moog's Structure Lib (moogs_structures) guide for All the Mods 10 4.13 to 8.1

Moog's Structure Lib is a library mod for the Moogs Structure series. It provides flexible, data-driven structure generation systems that other mods build on, so it works behind the scenes to support those mods.^[1]

What it offers

Mod developers add it as a dependency and use its structure types and placement systems. It includes a complete barn structure example that shows how to use all of its features. The project also links a wiki with step-by-step guides, JSON references, real examples from MoogsVoyagerStructures and troubleshooting tips.^[1]

It can also be installed server-side only, and it is released under the GNU Lesser General Public License v3.0 only.^[1]

In this pack

The pack includes version 3.1.2, the NeoForge 1.21.1 build (MoogsStructureLib-neoforge-1.21.1-3.1.2.jar). It has been part of the pack since version 4.13 or earlier.^[2]

There's nothing to craft here, and that's the first thing to know. Moog's Structure Lib is a library mod that gives other mods data-driven structure generation systems to build on, so it isn't something you play with directly.^[1]

In this pack there are no quests involving the mod and no recipes that produce its items. That's why this section has no recipe blocks: there's no in-pack recipe to point you to.^[1]

What to do first

1. Don't go looking for an item to make. The mod is a dependency for other mods in the Moog's structure series, and it works behind the scenes.^[1]
2. Explore the world as normal. Structures that rely on this library are generated by the mods that use it, so you find them while exploring.^[1]
3. If you run a server, the mod can be installed server-side only.^[1]

Structure rarity

The mod does have rarity settings. Its config text says one option multiplies the spacing of every Moog's structure, where a higher value means rarer structures and a lower value means more common ones. There's also a per-mod version that multiplies the spacing of every structure from one specific mod.^[3]

Unverified The config file name, the default values and any changes this pack makes to the rarity settings couldn't be confirmed, so check the config files in your own instance before changing them.

Moog's Structure Lib is a library mod, so there are no machines, power or item automation to learn here. What it offers is a data-driven structure generation system that other mods build on, so its core mechanics are about how structures get placed in the world.^[1]

What the library does

Other mods add it as a dependency and use its structure types and placement systems. It includes a complete barn structure as an example of how to use all of its features.^[1]

It can also be installed server-side only, so a server can run it without every player needing it on the client.^[1]

Structure rarity

The mod's language file describes a universal rarity option that multiplies the spacing of every Moog's structure. Higher values make structures rarer and lower values make them more common.^[3]

There is also a per-mod rarity option that multiplies the spacing of every structure belonging to one particular mod.^[3]

Unverified The sources here show no config file for this mod in the pack, so the exact option names and the spacing values the pack uses are unverified. Don't assume the pack has changed structure spacing.

Unverified The mod has its own online wiki with JSON references and examples for structure authors, but it was not available as a source here, so the details of its structure types and placement systems are not covered in this guide.

Moog's Structure Lib has been in All the Mods 10 since version 4.13 or earlier, and the pack has updated it several times since. The current version in 8.1 is 3.1.2.^[2][4]

Pack release timeline

• 4.13: the mod was added to the pack as version 1.0.1-1.21-1.21.1.^[4]
• 5.2: updated from 1.21-2.0.0 to 1.1.0-1.21-1.21.1.^[5]
• 7.0: updated from 1.1.0-1.21-1.21.1 to 2.0.2.^[6]
• 7.1: updated from 2.0.2 to 3.0.0.^[7]
• 7.2: updated from 3.0.0 to 3.0.3.^[8]
• 8.1: updated from 3.0.3 to 3.1.2. The shipped file is MoogsStructureLib-neoforge-1.21.1-3.1.2.jar.^[2][9]

The jump from 2.0.2 to 3.0.0 in 7.1 is the biggest version step in this history, but the pack changelogs only record the version numbers, not what changed in them.^[7]

Unverified No changelogs for the shipped jars are available, so what each update changed inside the mod (features, fixes or breaking changes) is unverified. Check the mod's own release notes if you need those details.