This small game engine, or if you look at it in more detail it's actually just a state machine, is the result of a thread in the SFML forum, where someone pointed to a tutorial on a state machine programmed in C++ and intended for the graphics Simple DirectMedia Libraray (SDL). I've taken the question as a challenge and transformed the source code to make use of the Simple and Fast Multimedia Library (SFML) instead. Meanwhile I've added quite a few changes to not only provide a more modern approach to C++ by using features from the new C++11 standard, as well as utilizing idioms likes RAII, but also to encapsulate classes a bit better. I'm not sure if this is a project I'll make much or any changes on but I might base a small game on it just for fun.

Although I don't own the rights on the source code the engine is based on I'll release it under the zlib license anyway. For further details take a look at the LICENSE file.

A big thanks for the tutorial in the first place goes out to Anthony Lewis, make sure to checkout his development blog and his personal blog. Thanks to kurayama for the suggestion on using a template based Build() function rather than the Instance() functions embedded in every state class.