Day Ten

Continued the hackery. Got a simple Engine class going, although that took longer than expected because hge's update and render callbacks need to be static. Resolved this by making Engine a singleton, but still need double-indirection for the callbacks. Then got a sprite moving around. Or, to put it bluntly, a white box. Must investigate file loading soon, so I expect the tune for the next few days will be investigating how best to do something, implementing, refactoring and so forth, until HelloWorld hits yesterday's feature list, and is structured in a sound way, providing a framework for further development. Natch.