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|
-module(btl_map).
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%% TYPES %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-record
(
map,
{
width :: integer(),
height :: integer(),
tile_ids :: shr_tile:instances_tuple()
}
).
-opaque type() :: #map{}.
-export_type([type/0]).
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%% EXPORTS %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%%% Accessors
-export
(
[
get_width/1,
get_height/1,
get_tile_instances/1,
get_tile_instance/2,
get_used_tile_ids/1
]
).
-export
(
[
from_list/3,
from_instances_tuple/3
]
).
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%% LOCAL FUNCTIONS %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-spec location_to_index
(
non_neg_integer(),
btl_location:type()
)
-> ('error' | non_neg_integer()).
location_to_index (ArrayWidth, {X, Y}) ->
if
(X < 0) -> error;
(Y < 0) -> error;
(X >= ArrayWidth) -> error;
true -> ((Y * ArrayWidth) + X)
end.
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%% EXPORTED FUNCTIONS %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%%% Accessors
-spec get_width (type()) -> integer().
get_width (Map) -> Map#map.width.
-spec get_height (type()) -> integer().
get_height (Map) -> Map#map.height.
-spec get_tile_instances (type()) -> shr_tile:instances_tuple().
get_tile_instances (Map) -> Map#map.tile_ids.
-spec get_tile_instance (btl_location:type(), type()) -> shr_tile:instance().
get_tile_instance (Location, Map) ->
TileIX = location_to_index(Map#map.width, Location),
element((TileIX + 1), Map#map.tile_ids).
-spec from_list
(
non_neg_integer(),
non_neg_integer(),
list(list(binary()))
)
-> type().
from_list (Width, Height, List) ->
TileInstances = lists:map(fun shr_tile:instance_from_binary_list/1, List),
#map
{
width = Width,
height = Height,
tile_ids = list_to_tuple(TileInstances)
}.
-spec from_instances_tuple
(
non_neg_integer(),
non_neg_integer(),
shr_tile:instances_tuple()
)
-> type().
from_instances_tuple (Width, Height, TileInstances) ->
#map
{
width = Width,
height = Height,
tile_ids = TileInstances
}.
-spec get_used_tile_ids (type()) -> ordsets:ordset(shr_tile:class_id()).
get_used_tile_ids (Map) ->
UsedTileIDs =
lists:foldl
(
fun (TileInstance, CurrentTileIDs) ->
ordsets:add_element
(
shr_tile:extract_main_class_id(TileInstance),
CurrentTileIDs
)
end,
ordsets:new(),
tuple_to_list(Map#map.tile_ids)
),
UsedTileIDs.
|
