UMG Viewmodel Basics
A simplified schematic to see how it should work.
What is a Viewmodel?
A Viewmodel (VM) is a design pattern that separates presentation logic from business logic and data in a game.
Why use a Viewmodel?
Separation of concerns: Separates UI logic from business logic.
Improved testability: Easier to write unit tests for logic independent of UI.
Reusability: Logic can be used in different parts of the interface.
Simplified development: Developers can work on UI and logic independently.
Advantages over traditional methods
Compared to direct property/function binding in UMG:
Less coupling: UI doesn't depend directly on game logic.
Easier to maintain: Changes in logic don't require changes in UI.
Cleaner code: Less logic in Widget Blueprints.
Better performance: Fewer direct calls to game objects.
How does UMG Viewmodel work?
Model: Contains data and business logic.
Viewmodel: Transforms model data into a format convenient for display.
View: UMG widget that displays data from the Viewmodel.
Resolver: Connects Viewmodel and View.
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