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 Observer pattern

These are some of the benefits of the Observer pattern:

  • Dynamism: The Observer permits the Subject to add as many objects as it necessitates as Observers. But it can also remove them dynamically at runtime. 
  • One-to-Many: The main benefit of the Observer pattern is that it elegantly solves the problem of implementing an event handling system in which there's a one-to-many relationship between objects.

The following are some potential drawbacks of the Observer pattern:

  • Disorder: The Observer pattern doesn't guarantee the order in which Observers get notified. So, if two or more Observer objects share dependencies and must work together in a specific sequence, the Observer pattern, in its native form, is not designed to handle that type of execution context. 
  • Leaking: The Observer can cause memory leaks as the subject holds strong references to its observers. If it's implemented incorrectly and the Observer...