wumpus

Copperbox revision 2375.

I've re-enabled pivot paths in Wumpus-Drawing and added some comments and deleted some commented out code in Wumpus-Basic. Also, I think I've found a more satisfying idiom for encoding path moves:

lines [go_up 20, up_right 20, go_down 60]

This encodes the moves in vector constructors once, rather than encoding them each time in Displacements, Paths etc. I don't know why I didn't spot this sooner. The only downside is that some names ("up", "down") are too valuable to be taken this library, but other names are already long enough without a go_ prefix.