Server/client disagreement on tile crossing cost.

1 files changed, 62 insertions, 0 deletions

diff --git a/src/battlemap/cross.erl b/src/battlemap/cross.erl
new file mode 100644
index 0000000..add9c27
--- /dev/null
+++ b/src/battlemap/cross.erl
@@ -0,0 +1,62 @@
+-export([cross/5]).
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%% LOCAL %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+next_loc (X, Y, <<"L">>) -> {(X - 1), Y};
+next_loc (X, Y, <<"R">>) -> {(X + 1), Y};
+next_loc (X, Y, <<"U">>) -> {X, (Y - 1)};
+next_loc (X, Y, <<"D">>) -> {X, (Y + 1)}.
+
+loc_to_index(X, Y, Map) ->
+   if
+      (X < 0) -> error;
+      (Y < 0) -> error;
+      (X >= Map#battlemap.width) -> error;
+      true -> ((Y * Map#battlemap.width) + X)
+   end.
+
+calc_new_loc (X, Y, [], Points, _Map, _CharInstsLocs) ->
+   io:format("~nPoints remaining: ~p ~n", [Points]),
+   true = (Points >= 0),
+   {X, Y};
+calc_new_loc (X, Y, [Step|Path], Points, Map, CharInstsLocs) ->
+   io:format("~nStep - Points remaining: ~p ~n", [Points]),
+   {NX, NY} = next_loc(X, Y, Step),
+   TileCost = 
+      tile:get_cost
+      (
+         array:get
+         (
+            loc_to_index(NX, NY, Map),
+            Map#battlemap.content
+         )
+      ),
+   io:format("~nStep cost: ~p ~n", [TileCost]),
+   NPoints =
+      (
+         Points
+         -
+         TileCost
+      ),
+   false = lists:member({NX, NY}, CharInstsLocs),
+   calc_new_loc(NX, NY, Path, NPoints, Map, CharInstsLocs).
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%% EXPORTED %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+cross (Battlemap, {X, Y}, Points, Path, CharInsts) ->
+   calc_new_loc
+   (
+      X,
+      Y,
+      Path,
+      Points,
+      Battlemap,
+      lists:map
+      (
+         fun character_instance:get_location/1,
+         CharInsts
+      )
+   ).