Book Image

Game Development Patterns with Unity 2021 - Second Edition

By : David Baron
Book Image

Game Development Patterns with Unity 2021 - Second Edition

By: David Baron

Overview of this book

This book is written for every game developer ready to tackle the bigger picture and start working with advanced programming techniques and design patterns in Unity. Game Development Patterns with Unity 2021 is an introduction to the core principles of reusable software patterns and how to employ them to build components efficiently. In this second edition, you'll tackle design patterns with the help of a practical example; a playable racing game prototype where you’ll get to apply all your newfound knowledge. Notable updates also include a game design document (GDD), a Unity programming primer, and the downloadable source code of a complete prototype. Your journey will start by learning about overall design of the core game mechanics and systems. You’ll discover tried-and-tested software patterns to code essential components of a game in a structured manner, and start using classic design patterns to utilize Unity's unique API features. 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 book, the way you develop Unity games will change – you’ll adapt a more structured, scalable, and optimized process that will help you take the next step in your career.
Table of Contents (22 chapters)
Sections 1: Fundamentals
Section 2: Core Patterns
Section 3: Alternative Patterns
About Packt

Benefits and drawbacks of the Decorator pattern

The following are some of the benefits of the Decorator pattern:

  • Alternative to subclassing: Inheritance is a static process. Unlike the Decorator pattern, it doesn't permit extending an existing object's behavior at runtime. You can only replace an instance with another with the same parent class that has the desired behavior. Therefore, the Decorator pattern is a more dynamic alternative to subclassing and overcomes the limits of inheritance.
  • Runtime dynamics: The Decorator pattern permits us to add functionality to an object at runtime by attaching decorators to it. But this also means that the reverse is possible, and you can restore an object back to its original form by removing its decorators. 

The following are some of the potential drawbacks of the Decorator pattern:

  • Relationship complexity: Keeping track of the chain of initialization and the relationships between decorators can become very complicated if there...