Text adventure game - moving - sequence of moves

[practicalli-johnny]

A function takes a position
{:dir :NORTH :x 0 :y 0}
and a move instruction
"R10" (turn Right, go 10 units)returns a new position{:direction EAST :forward 10 :back 0}`

  "Given a position (direction, forward, back) and move instruction, returns a new position"
  [position action]
  (apply-delta (assoc position :direction (turn position action)) action))

Now start with a single position and a sequence of directions, ["R10", "L20", "R10"] and return the final position.

pseudocode:
var pos = {:dir :NORTH :x 0 :y 0}
for (var dir : directions) {
    pos = move(pos, dir)
}
return pos

In Clojure
`(reduce update-position initial-position)`

To see the "path" taken, use `reductions` instead 
`(reductions update-position initial-position)`