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)
21
Other Books You May Enjoy
22
Index

Controlling Behavior with the State Pattern

In the last chapter, we built a decoupled notification system using the Observer pattern. In this chapter, we’ll jump into more game mechanic territory with the State pattern to create an object that can change its behavior based on an internal state value. While the State pattern is a mainstay of AI programming, you’re intimately familiar with state in everyday life – when you’re tired, you sleep; when you’re hungry, you eat; and when you’re happy, you smile. Each internal state triggers a different behavior in the same underlying object, you. Likewise, when you do a load of laundry, the machine goes through different states before finishing the cycle – rinse, wash, spin dry, and drain; same old washing machine, different states. Applied in code, the object appears to change its class when its behavior changes, when it’s really the underlying state that’s updated!

Like the...