For a personal project I want to create a simple 2D game that I can use to build out some AI classes and the like in C++.

Does anyone know of any resources for adding C++ classes into your XCode projects? Everything out there seems to be written in Objective-C, or doesn't include any discussion of graphics (not game-type graphics, at least).

I don't mind doing the graphics whichever way but I'd like the AI classes to be in C++. Any suggestions on how to bridge the gap? Can Objective-C and C++ even be mixed in a single application? Any thoughts on Qt?