Okay, I have most of the resource manager tested. I was quite surprised that most of it worked as it was supposed to. Its probably because I put more thought into its design than any other subsystem in the engine. At the moment its loading lists of resources from files, loading the resources themselves, and allowing me to retrieve them as necessary. There is just one class left to test, the one that ties it all together. So I'll get that done up tomorrow.

Looking back on my code already I can see many many places where I could improve the design or implementation of this engine. It will run well for this game, but I'll enjoy improving it in a few weeks time.