Game Development Patterns and Best Practices

Treating a function call like an object

The biggest benefit of using the Command pattern is that we are encapsulating the function or method call and the parameters. This means that everything needed for the call can be passed to another function, returned from a function, or stored as a variable for later use. This is an extra level of indirection over only using function or method pointers, but it means the client doesn't need to worry about the details. They only need to decide when to execute the command.

This might not seem very useful since we need to know all the function arguments before we pass it to the client. However, this situation can happen more often than you might think. The fact that the client doesn't need to know the details ...