Book Image

Learning Design Patterns with Unity

By : Harrison Ferrone
Book Image

Learning Design Patterns with Unity

By: Harrison Ferrone

Overview of this book

Struggling to write maintainable and clean code for your Unity games? Look no further! Learning Design Patterns with Unity empowers you to harness the fullest potential of popular design patterns while building exciting Unity projects. Through hands-on game development, you'll master creational patterns like Prototype to efficiently spawn enemies and delve into behavioral patterns like Observer to create reactive game mechanics. As you progress, you'll also identify the negative impacts of bad architectural decisions and understand how to overcome them with simple but effective practices. By the end of this Unity 2023 book, the way you develop Unity games will change. You'll emerge not just as a more skilled Unity developer, but as a well-rounded software engineer equipped with industry-leading design patterns.
Table of Contents (23 chapters)
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Index

Breaking down the State pattern

As part of the behavioral family of design patterns, the State pattern allows an object to change its internal behavior based on an internally tracked state. The internal state can be switched to any other concrete state object, which are self-contained classes that implement a common set of rules and customized logic. This means the State pattern is most useful when:

  • You want an object’s behavior to change (either at runtime or at every frame) based on an internal state.
  • You want to refactor an object’s long conditional statements into separate classes so it can be treated independently.
  • You want to add new behavior to an object without changing or breaking existing code.

Going back to the analogy a few pages ago, think of yourself as a state machine. You (as a person) have specific needs that change and depend on various internal and external factors. If you’re hungry, you eat; if you’re...