Text adventure game - moving - sequence of moves

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)`

Locate the existing update-position function and its position and action representations. Start by reading how turn and apply-delta are implemented, then use the described sequence with reduce to produce the final position and reductions to expose the path. Done means sequential moves return the expected final position and path.