Universal Multiblock Viewer 0.4

Universal Multiblock Viewer 0.4 improves compatibility with more complex multiblocks and makes guides easier to find and inspect.

Companion Resource Packs

Three companion resource packs with ready-made multiblock guides are now available:

• Forbidden Arcanus Guides
• Neo Vitae (Blood Magic) Guides
• Occultism Guides

Install the resource pack for any supported mod to add its interactive multiblock guides to Universal Multiblock Viewer.

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Highlights

• Material entries in the bottom palette now highlight every matching visible position in the 3D preview when hovered.
• Added an in-game list of all registered multiblock guides.
• Multiblocks are grouped by their source namespace, then sorted alphabetically.
• Items with registered guides can show an amber tooltip hint:
  • Press U for multiblock guide
  • Press R for multiblock guide
  • Press R or U for multiblock guide

Better Compatibility with Complex Structures

• Added support for rendering a block while displaying a different item in the materials list.
  • Useful for structures built with reusable items that place special rendered blocks, such as chalk glyphs.
• Added material behaviour types for placed blocks, required items, and reusable tools.
• Reusable tools are listed once instead of incorrectly being counted once per placed position.
• Added block-state support for both exact block IDs and tag-based alternatives.
• State-aware blocks render with their configured orientation while material counts remain correctly combined.
• Improved rendering fallbacks for blocks that rely on specialised rendering, including skull-style blocks.
• Improved diagnostics for malformed definitions, missing registry entries, invalid state properties, and registration problems.

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Viewer Improvements

• Selected-block alternatives now avoid duplicate entries when several rendered alternatives use the same reusable material.
• Alternative highlighting only marks positions with genuinely distinct material choices.
• The main lookup or controller item is kept first in the materials palette and receives a subtle green frame.
• Added descriptions through the in-viewport info indicator, with cleaner title and wrapped description presentation.
• Increased the maximum preview zoom for small or spread-out structures.
• Improved selected-block highlighting with a clean amber overlay and red outline.
• Improved block outlines so highlights remain clear on both solid and see-through blocks.

For Guide Authors

• Added optional state support for tag entries.
• Added the optional material object for mapping rendered blocks to material-bar items and defining collection behaviour.
• Existing JSON definitions remain compatible. The new fields are optional.

See the JSON Authoring Guide for the full schema and examples.

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Compatibility

Universal Multiblock Viewer remains a client-side visual guide mod. It does not create, validate, or alter the behaviour of third-party multiblock machines.

Minecraft 1.21.1 · NeoForge · JEI / EMI