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.

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

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

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.

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.