Ladder (elm_playground.Ladder)

val reach : 
  (char -> bool) ->
  Tilemap.t ->
  (Playground.number * Playground.number) ->
  Playground.number ->
  Playground.number ->
  Playground.number option

val standing : 
  (char -> bool) ->
  (char -> bool) ->
  Tilemap.t ->
  (Playground.number * Playground.number) ->
  Playground.number ->
  Playground.number ->
  bool

val on_top : 
  (char -> bool) ->
  Tilemap.t ->
  (Playground.number * Playground.number) ->
  Playground.number ->
  Playground.number ->
  bool

val climb : 
  (char -> bool) ->
  (char -> bool) ->
  Tilemap.t ->
  (Playground.number * Playground.number) ->
  (Playground.number * Playground.number) ->
  Playground.number ->
  Playground.number * Playground.number