unity-mvc-pattern

name	unity-mvc-pattern
description	Implementation of Model-View-Controller (MVC) and Model-View-Presenter (MVP) patterns in Unity. Focuses on Separation of Concerns for scalable UI and game systems.

Unity MVC / MVP Pattern

This skill implements the architectural principle of "Separation of Concerns." It divides your code into three distinct layers: Model (Data), View (Visuals), and Presenter (Logic bridge).

Core Features

1. ObservableList: A reactive collection that notifies listeners (the View) when data changes.
2. Passive View: Views are MonoBehaviours that only care about HOW to display data, not WHERE it comes from.
3. Mediated Logic: The Presenter handles the "Wiring" and lifecycle, keeping Data and Visuals completely decoupled.
4. MMO Hotbar Pattern: A concrete implementation of the multi-slot observable layout described in the reference text.

Core Files (Max 3)

• ObservableList.cs.txt: Generic collection wrapper with structural change notifications.
• GenericPresenter.cs.txt: Base class for creating M-V-P relationships without boilerplate.
• MMOHotbarExample.cs.txt: Practical application showing data flowing from a Model to a UI view.

Usage

1. The Model (Data)

Contains your state using Observable<T> or ObservableList<T>. It does not know about Unity UI.

2. The View (Visuals)

A MonoBehaviour that exposes public methods for updating its state (e.g., SetHealth(float val)).

3. The Presenter (Bridge)

public class MyPresenter : Presenter<MyModel, MyView> {
    protected override void Bind() {
        model.health.OnChanged += view.SetHealth;
    }
}

When to Use

Use this pattern for complex UI (Inventories, Skill Trees, Settings) or high-level game managers where logic and visuals are likely to change independently.