Book Image

Game Development Patterns and Best Practices

By : John P. Doran, Matt Casanova
Book Image

Game Development Patterns and Best Practices

By: John P. Doran, Matt Casanova

Overview of this book

You’ve learned how to program, and you’ve probably created some simple games at some point, but now you want to build larger projects and find out how to resolve your problems. So instead of a coder, you might now want to think like a game developer or software engineer. To organize your code well, you need certain tools to do so, and that’s what this book is all about. You will learn techniques to code quickly and correctly, while ensuring your code is modular and easily understandable. To begin, we will start with the core game programming patterns, but not the usual way. We will take the use case strategy with this book. We will take an AAA standard game and show you the hurdles at multiple stages of development. Similarly, various use cases are used to showcase other patterns such as the adapter pattern, prototype pattern, flyweight pattern, and observer pattern. Lastly, we’ll go over some tips and tricks on how to refactor your code to remove common code smells and make it easier for others to work with you. By the end of the book you will be proficient in using the most popular and frequently used patterns with the best practices.
Table of Contents (19 chapters)
Title Page
Credits
About the Authors
About the Reviewers
www.PacktPub.com
Customer Feedback
Preface
4
Artificial Intelligence Using the State Pattern

Chapter 6. Creating Objects with the Prototype Pattern

We saw in the last chapter how using a Dynamic Factory can help us decouple our high-level modules, such as the M5StageManager or M5ObjectManager from the implementation details of our derived M5Stage or M5Component classes. We did this by pushing those dependencies into derived builder classes that would be used by a Dynamic Factory. This allowed us the freedom to change our derived stage and component classes without needing to modify our higher level modules. C++ template classes made using the Dynamic Factory very easy, since we were not required to create a derived class builder for every stage and component.

However, we are required to create a builder for each M5Object type we want, since they will contain a set of components that are unique to each object. Unfortunately, these builders may require frequent changes as we playtest, balance, and modify our game design. Each time these builders change, the game will be need to be...