CatFrame

A Modern Rendering & UI Framework for Minecraft 1.7.10
CatFrame is a comprehensive rendering and UI framework for Minecraft 1.7.10, providing a full backport of the 1.8+ JSON model pipeline, an extensible blockstate system, an enhanced multi‑layer item renderer, and a modular UI component toolkit, for all of my works.
It serves as a foundational library for advanced mod development, enabling clean, data‑driven rendering and modern GUI design on a legacy version of Minecraft.

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Rendering & Model System

CatFrame implements a complete 1.8‑style JSON model architecture:

• Model inheritance (parent) with full merging of textures, elements, and display
• Blockstate JSON with property‑based variants, rotations, UV lock, weighted randomness, and multipart logic
• Runtime state mapping via IBlockStateProvider, allowing metadata/world state → variant resolution
• Automatic model baking into BakedQuad with Mixin‑based integration into vanilla block/item rendering
• Namespace‑based resource loading (models/, blockstates/, model_mappings.json)
• Texture collection & stitching during TextureStitchEvent
• Full display transform support for GUI, ground, fixed, first‑person, third‑person, and custom contexts

This system eliminates the need for ISBRH/TESR renderers and enables fully data‑driven block and item visuals.

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ItemModern

Enhanced Item Rendering, CatFrame extends the vanilla item renderer with:

• Unlimited texture layers (not limited to 1–2 like vanilla)
• Per‑layer color tinting
• 2D GUI rendering + 3D in‑hand transforms
• Full compatibility with JSON item models
• Automatic multi‑pass rendering via getRenderPasses() and getColorFromItemStack()

This allows complex item visuals (weapons, tools, overlays, dyeable layers) without custom rendering code.

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UI Framework

CatFrame includes a modular UI toolkit used by CreateWorldUI and available for any mod:

GuiCyclableButton<T>

A type‑safe cycling button with scroll‑wheel support, customizable value‑to‑text formatting, and update callbacks.
Ideal for option selectors, difficulty toggles, mode switches, and world‑creation parameters.

ContentPanelRenderer

A shared renderer for modern panel layouts:

• Header/footer separators
• Tiled backgrounds
• Custom textures
• One‑call drawContentPanel() convenience method

Useful for structured option panels and grouped UI sections.

Tab System

A complete multi‑tab GUI framework:

• Tab interface for custom logic
• AbstractScreenTab for easy implementation
• TabManager for switching, input routing, and resize persistence
• TabBar for customizable tab bars (solid color, tiled textures, custom tab button textures)
• TabRegistry for registering tabs from external mods

Designed for complex screens, configuration menus, and multi‑section interfaces.

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Credits

• 草莓龍醬 & AmarokIce for the json model support.