Screenshot and update

Busy today, so so just enough time to do another screenshot. This includes the text I wrote about yesterday (though I've rewritten that code to make it more flexible), the lives indicators, and some more gameplay elements that are too complex to describe.

It's still is missing some major elements before it's really a playable game, though those in a way are the easiest bits to put in. Then lots of tweaking and improving, not least of the graphics which I've been adding to but haven't looks at changing.