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|
-module(bm_battlemap).
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%% TYPES %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-type id() :: binary().
-record
(
battlemap,
{
id :: id(),
width :: integer(),
height :: integer(),
tile_ids :: array:array(bm_tile:id())
}
).
-opaque type() :: #battlemap{}.
-export_type([type/0, id/0]).
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%% EXPORTS %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%%% Accessors
-export
(
[
get_id/1,
get_width/1,
get_height/1,
get_tile_ids/1,
get_tile_id/2
]
).
-export
(
[
random/3
]
).
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%% LOCAL FUNCTIONS %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-spec generate_random_tile_ids
(
bm_tile:id(),
list(bm_tile:id()),
non_neg_integer(),
non_neg_integer(),
non_neg_integer()
)
-> list(bm_tile:id()).
generate_random_tile_ids (_PreviousTileID, Result, _X, 0, _Width) ->
Result;
generate_random_tile_ids (PreviousTileID, Result, 0, Y, Width) ->
generate_random_tile_ids(PreviousTileID, Result, Width, (Y - 1), Width);
generate_random_tile_ids (PreviousTileID, Result, X, Y, Width) ->
NewTile =
case sh_roll:percentage() of
N when (N >= 10) -> PreviousTileID;
_ -> bm_tile:random_id()
end,
generate_random_tile_ids(NewTile, [NewTile|Result], (X - 1), Y, Width).
-spec location_to_array_index
(
non_neg_integer(),
bm_location:type()
)
-> ('error' | non_neg_integer()).
location_to_array_index (ArrayWidth, {X, Y}) ->
if
(X < 0) -> error;
(Y < 0) -> error;
(X >= ArrayWidth) -> error;
true -> ((Y * ArrayWidth) + X)
end.
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%% EXPORTED FUNCTIONS %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%%% Accessors
-spec get_id (type()) -> id().
get_id (Battlemap) -> Battlemap#battlemap.id.
-spec get_width (type()) -> integer().
get_width (Battlemap) -> Battlemap#battlemap.width.
-spec get_height (type()) -> integer().
get_height (Battlemap) -> Battlemap#battlemap.height.
-spec get_tile_ids (type()) -> array:array(bm_tile:id()).
get_tile_ids (Battlemap) -> Battlemap#battlemap.tile_ids.
-spec get_tile_id (bm_location:type(), type()) -> bm_tile:id().
get_tile_id (Location, Battlemap) ->
TileIX = location_to_array_index(Battlemap#battlemap.width, Location),
array:get(TileIX, Battlemap#battlemap.tile_ids).
-spec random
(
non_neg_integer(),
non_neg_integer(),
non_neg_integer()
)
-> type().
random (ID, Width, Height) ->
InitialTile = bm_tile:random_id(),
TileIDs = generate_random_tile_ids(InitialTile, [], Width, Height, Width),
#battlemap
{
id = list_to_binary(integer_to_list(ID)),
width = Width,
height = Height,
tile_ids = array:from_list(TileIDs)
}.
|
