Allow more general detection of item use focus

src/Dodge/Creature/Action/Blink.hs

@@ -15,6 +15,9 @@ import Geometry
 import LensHelp
 import Picture
 
+-- note collideCircWalls doesn't always correctly zone walls, this should be
+-- replaced.
+-- I think the test circHitWall DOES work
 -- | Teleport a creature to the mouse position
 blinkActionMousePos :: Creature -> World -> World
 blinkActionMousePos cr w =