1 files changed, 70 insertions, 0 deletions
diff --git a/src/shared/battle-map/BattleMap/Struct/Location.elm b/src/shared/battle-map/BattleMap/Struct/Location.elm
new file mode 100644
index 0000000..3443150
--- /dev/null
+++ b/src/shared/battle-map/BattleMap/Struct/Location.elm
@@ -0,0 +1,70 @@
+module BattleMap.Struct.Location exposing (..)
+
+-- Elm -------------------------------------------------------------------------
+import Json.Decode
+import Json.Decode.Pipeline
+
+import Json.Encode
+
+-- Battle Map ------------------------------------------------------------------
+import BattleMap.Struct.Direction
+
+--------------------------------------------------------------------------------
+-- TYPES -----------------------------------------------------------------------
+--------------------------------------------------------------------------------
+type alias Type =
+   {
+      x : Int,
+      y : Int
+   }
+
+type alias Ref = (Int, Int)
+
+--------------------------------------------------------------------------------
+-- LOCAL -----------------------------------------------------------------------
+--------------------------------------------------------------------------------
+
+--------------------------------------------------------------------------------
+-- EXPORTED --------------------------------------------------------------------
+--------------------------------------------------------------------------------
+neighbor : BattleMap.Struct.Direction.Type -> Type -> Type
+neighbor dir loc =
+   case dir of
+      BattleMap.Struct.Direction.Right -> {loc | x = (loc.x + 1)}
+      BattleMap.Struct.Direction.Left -> {loc | x = (loc.x - 1)}
+      BattleMap.Struct.Direction.Up -> {loc | y = (loc.y - 1)}
+      BattleMap.Struct.Direction.Down -> {loc | y = (loc.y + 1)}
+      BattleMap.Struct.Direction.None -> loc
+
+get_ref : Type -> Ref
+get_ref l =
+   (l.x, l.y)
+
+from_ref : Ref -> Type
+from_ref (x, y) =
+   {x = x, y = y}
+
+dist : Type -> Type -> Int
+dist loc_a loc_b =
+   (
+      (abs (loc_a.x - loc_b.x))
+      +
+      (abs (loc_a.y - loc_b.y))
+   )
+
+decoder : (Json.Decode.Decoder Type)
+decoder =
+   (Json.Decode.succeed
+      Type
+      |> (Json.Decode.Pipeline.required "x" Json.Decode.int)
+      |> (Json.Decode.Pipeline.required "y" Json.Decode.int)
+   )
+
+encode : Type -> Json.Encode.Value
+encode loc =
+   (Json.Encode.object
+      [
+         ( "x", (Json.Encode.int loc.x) ),
+         ( "y", (Json.Encode.int loc.y) )
+      ]
+   )