Yep, I didn't put any code in to avoid getting stuck in walls, that would have taken minutes I didn't have.
Some details on the Daleks game are here: http://www.nonanone.com/Daleks/ but this is a 2010 re-make of the 1984 classic which you can actually download here: https://macintoshgarden.org/games/daleks. loosely speaking, it's also a wave survival game, theres' no win condition, just more and more Daleks every wave. I was planning on adding waves and day/night cycles, where surviving NPCs would feed you food (so incentive to keep them alive), but that would have overscoped it.