I just blew up a floor sander in the most dramatic way. Sheared bolts and everything. Ooops. At least this computer is less likely to explode, although I built it myself, so there is always a possibility that it might.
A comment on one of those sites that are redistributing SCMIV said that it wasn’t just another Sokoban clone. Hmm, I thought and looked up Sokoban (there is an academic page here). And then following links I looked at Chip’s Challenge. So I could have used either to illustrate what I wanted to say about basic spatial construction in games without having to knock my own up. I am constantly hit by my ignorance of games, despite having my head stuck into them for a long time and to an almost worrying degree. Ah well, I wasn’t trying to do anything particularly original, but it is interesting to see how the designers of those games made a virtue out of the problem of ‘boxing in’ that I addressed through a control system that seems to irritate its players. I live and learn.