Don't code too much at once

Have just added a LOT of code to my game today, but can't test it yet! Need to write another four functions before I'll be able to test it, and then there will be a lot of debugging I expect. Nonetheless I should have a working version by mid-afternoon tomorrow ready to post on here, and I can then add the second half of the game in finally!

I really hope the code I've spent so much time on today doesn't have many bugs..