Common mistakes

One of the most common mistakes the newcomers make when it comes to SFML input is using certain methods of checking the user input for the wrong tasks, such as using the window events for real time character movement or capturing text input. Understanding the limitations of anything you use is the key to cultivating any kind of decent performance. Make sure to stick to the intended uses of all the different mechanisms we've discussed in order to achieve optimal results.

Another fairly common mistake people make is defining templates in the .cpp file instead of the header. If you are getting linking errors pertaining to a method that just so happens to utilize templates, such as the EventManager::AddCallback() method, make sure to move the implementation of the method and the definition of the template right to the header of your class, otherwise the compiler cannot instantiate the template and the method becomes inaccessible during the linking process.

Lastly, a rather simple...