In this chapter, we will explain about the pattern and many arguments for and against it. We will describe how and why core systems within the Mach5 engine such as the Graphics Engine and Object Manager are utilized as Singletons. Finally, we will explain a number of different ways to implement this in C++, along with the pros and cons of each choice.
- Preface
- Introduction to Design Patterns
- One Instance to Rule Them All - Singletons
- Chapter overview
- Your objective
- An overview on class access specifiers
- The static keyword
- Pros and cons of global variables
- What is a Singleton?
- Learning about templates
- Templatizing Singletons
- Advantages/disadvantages of using only one instance
- The Singleton in action - the Application class
- Summary
- Creating Flexibility with the Component Object Model
- Artificial Intelligence Using the State Pattern
- Decoupling Code via the Factory Method Pattern
- Creating Objects with the Prototype Pattern
- Improving Performance with Object Pools
- Controlling the UI via the Command Pattern
- Decoupling Gameplay via the Observer Pattern
- Sharing Objects with the Flyweight Pattern
- Understanding Graphics and Animation
- Best Practices
Chapter overview
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