Game Development Patterns and Best Practices

Keeping the single in Singleton

As we've mentioned previously, one of the most important parts of the Singleton pattern is the fact that there is only one of those objects. That causes some issues with the original code that we've written, namely that with some simple usage of C++ it is quite easy to have more than one of these classes created by other programmers on your team. First and most obviously, they can just create a Singleton variable (a variable of type Singleton) like the following:

Singleton singleton;

In addition, as a higher-level programming language, C++ will try to do some things automatically for you when creating classes to eliminate some of the busy work that would be involved otherwise. One of these things is automatically ...