}

type direction int

const (
	north direction = iota
	ne
	east
	se
	south
	sw
	west
	nw
	up
	down
)

func (dir direction) String() string {
	strs := map[direction]string{
		north: "north",
		ne:    "ne",
		east:  "east",
		se:    "se",
		south: "south",
		sw:    "sw",
		west:  "west",
		nw:    "nw",
		up:    "up",
		down:  "down",