2 files changed, 31 insertions, 5 deletions
diff --git a/src/battlemap/struct/bm_battlemap.erl b/src/battlemap/struct/bm_battlemap.erl
index c3eabb0..6c9fbf9 100644
--- a/src/battlemap/struct/bm_battlemap.erl
+++ b/src/battlemap/struct/bm_battlemap.erl
@@ -38,7 +38,8 @@
 -export
 (
    [
-      random/3
+      random/3,
+      from_list/4
    ]
 ).
 
@@ -119,3 +120,22 @@ random (ID, Width, Height) ->
       height = Height,
       tile_ids = array:from_list(TileIDs)
    }.
+
+-spec from_list
+   (
+      non_neg_integer(),
+      non_neg_integer(),
+      non_neg_integer(),
+      list(non_neg_integer())
+   )
+   -> type().
+from_list (ID, Width, Height, List) ->
+   TileIDs = lists:map(fun bm_tile:id_from_int/1, List),
+
+   #battlemap
+   {
+      id = list_to_binary(integer_to_list(ID)),
+      width = Width,
+      height = Height,
+      tile_ids = array:from_list(TileIDs)
+   }.
diff --git a/src/battlemap/struct/bm_tile.erl b/src/battlemap/struct/bm_tile.erl
index c1dd448..ce04898 100644
--- a/src/battlemap/struct/bm_tile.erl
+++ b/src/battlemap/struct/bm_tile.erl
@@ -21,7 +21,8 @@
 -export
 (
    [
-      random_id/0
+      random_id/0,
+      id_from_int/1
    ]
 ).
 
@@ -37,11 +38,16 @@ cost_when_oob () -> 255.
 
 -spec get_cost (id()) -> non_neg_integer().
 get_cost (N) ->
-   if
-      (N =< 200) -> (N + 8);
-      true -> cost_when_oob()
+   case N of
+      0 -> 6;
+      1 -> 12;
+      2 -> 24;
+      _ -> cost_when_oob()
    end.
 
 -spec random_id () -> id().
 random_id () ->
    sh_roll:between(0, 15).
+
+-spec id_from_int (non_neg_integer()) -> id().
+id_from_int (I) -> I.