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SLM: Codex

Add a Codex system with Skills, Passives, Actives, Lore, etc. for Items, Weapons, Armor & Curios
by Sleys
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173,408 downloads
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Updated Jul 6, 2026
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Addons API and Library Cosmetic Utility & QoL

📖 SLM: Codex

This mod introduces a Codex system that enhances how items are displayed and understood, providing detailed and organized information directly in-game.

It supports Items, Weapons, Armor, and Curios.


 

⚙️ Features

Each supported item can include a complete Codex entry with:

  • 🧩 Passives  
  • ⚔️ Skills
  • 📜 Description / Lore  
  • 📊 Attributes / Stats

All information is presented through a clean, tab-based interface.


 

🗂️ Supported Categories

The Codex system is divided into multiple sections:

  • 🗡️ Weapons

 

  • 🛡️ Armor  

 

  • 🎒 Curios  

 

  • 📦 Items  

Each category has its own specialized layout and data handling.


 

🧠 Skill Integration

  • Supports Innate Skills integration
  • Can display and redirect skills from compatible systems (such as Epic Fight)  
  • Provides a unified view of abilities tied to equipment  

 

📘 Codex JSON Guide

The Codex system allows you to define custom entries for items, weapons, armor, and curios using JSON.

You can use translation keys or raw text for any visible field:

  • Translation keys enable multi-language support
  • Raw text is useful for quick definitions or testing

🧩 Common Fields (All Entries)

Field Description
nameKey Item name. Supports translation keys or plain text.
nameColorKey Adding a color to the item name supports standard Minecraft styles and hexadecimal as a string.
descriptionKey Main description shown in the codex.
overwritteTooltip If true, replaces the default tooltip with the codex one.
passiveSkills List of passive abilities.
activeSkills List of active abilities.

 

The entries for Passive Skills or Active Skills are not mandatory; if you don't include them or leave them blank, they won't appear in the codex! And your file will still work.


 

⚙️ Skills Format (Passive & Active)

Both passiveSkills and activeSkills use the same structure (Supports multiple entries):

 

Parameters

Field Description
title Skill name
description Main effect or explanation
additional (optional) Extra details, conditions, or notes

 

 

🔽 More Details (Advanced) | ⚔️ Weapon / Item Codex

Path: data/<item_namespaces>/renderable_codex/<item_name>.json

Field Description
itemType Defines the type. Supported: weapon, item
scale Controls the rendered size of the item in the codex
translate Adjusts the position [x, y, z] in the display
rotation Controls orientation

 

🔄 Rotation Values

Supports predefined directions:

"up", "down", "left", "right",
"up_left", "up_right",
"down_left", "down_right"

You can also use custom numeric values as strings, for example:

"4.15"

 

Final Example for Weapon & Item Codex

 

🔽 More Details (Advanced) | 🛡️ Armor Codex

data/<item_namespaces>/armor_codex/<item_name>.json

Field Description
armorSlot Armor piece type

 

Supported values:

  • head    →  Helmet
  • chest  →  Chestplate
  • legs    →  Leggings
  • feet    →  Boots
Extra Field Description
correctionFactor Adjusts rendering alignment (fine-tuning value)

 

Final Example for Armor Codex

 

🎒 Curios Fields

data/<item_namespaces>/curios_codex/<item_name>.json

Field Description
curiosSlot Slot where the item is equipped

 

Final Example for Curios Codex


 

🖥️ User Interface

  • Interactive Codex panels accessible in-game  
  • Tab-based navigation for different data types  
  • Scrollable sections for large amounts of information  
SLM-Codex-1.3-1.20.1+[Forge].jar
MC Client, 1.20.1, Forge, Server
Release 2026-05-28 Get
SLM-Codex-1.3-1.21.1+[NeoForge].jar
MC Client, 1.21.1, NeoForge, Server
Release 2026-05-23 Get

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