Introduction into HookUI

HookUI is a lightweight, decoupled, and code-driven UI framework for Unity. It is designed to bridge the gap between visual node-based workflows and robust, scalable software architecture.

Unlike other solutions that force you into heavy, black-box systems, HookUI focuses on providing tools that empower your codebase rather than hiding it.

Why HookUI?

Unity's built-in UI tools are powerful but often lack a cohesive structure for managing navigation, complex flows, and state.

• Designers need a visual way to see screen flow (HookUI Graph).
• Programmers need a clean API, typed IDs, and zero magic strings (HookUI Database & Signals).
• Teams need a system that doesn't break when merging git branches (ScriptableObject Architecture).

HookUI delivers on all fronts by decoupling the Trigger (Buttons/Signals) from the Action (Navigation/Logic).

Key Features

1. The ID Database

Forget about referencing GameObjects by name or dragging references into unlimited slots. HookUI uses a centralization approach:

• Views, Buttons, and Signals are defined as IDs in a Global Database.
• The Inspector offers dropdowns with search, categorization, and filtering.
• Multi-Database Support: Load external or demo databases automatically without polluting your core data.

2. Flux Navigation Graph

Visualize your entire UI flow in a node-based editor.

• Drag & Drop connection between Screens.
• Logic Nodes: "Start", "Quit", and custom logic gates.
• Portals: Jump between distant parts of the flow without spaghetti wires.

3. Decoupled Signal System

A robust Event Bus system built-in.

• Senders emit signals with IDs.
• Listeners react to them anywhere in the scene.
• Zero direct dependencies between your HUD and your Player Controller.

4. Smart Logging & Debugging

• Channels: Filter logs by Navigation, Interaction, Core, etc.
• Color-Coded: Instantly recognize what system is talking.
• Editor Integration: Configure debug levels directly from the HookUI Settings.

Comparison

Feature	Standard Unity UI	HookUI	Doozy UI / Others
Workflow	Prefab referencing	ID-based & Graph-based	Heavy FSM / Node Graph
Coding	Monolithic Managers	Decoupled Events/API	Component-heavy
Performance	High (Native)	High (Lightweight Wrapper)	Variable (Reflection overhead)
Data	Scene-based	ScriptableObject Database	ScriptableObject / Proprietary

Next Steps

Ready to dive in? Check out the Installation Guide to set up your project.