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|
-module(btl_tile).
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%% TYPES %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-record
(
tile,
{
id :: class_id(),
name :: binary(),
cost :: non_neg_integer()
}
).
-opaque class_id() :: non_neg_integer().
-opaque instance() :: (
{class_id(), class_id(), non_neg_integer()}
| non_neg_integer()
).
-opaque type() :: #tile{}.
-export_type([type/0, class_id/0, instance/0]).
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%% EXPORTS %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-export
(
[
get_class_id/1,
get_name/1,
get_cost/1,
from_class_id/1,
cost_when_oob/0
]
).
-export
(
[
instance_to_int_list/1,
instance_from_ints/1
]
).
-export
(
[
extract_main_class_id/1,
extract_border_class_id/1,
extract_variant_ix/1
]
).
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%% LOCAL FUNCTIONS %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%% EXPORTED FUNCTIONS %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-spec extract_main_class_id (instance()) -> class_id().
extract_main_class_id (M) when is_integer(M) ->
M;
extract_main_class_id ({M, _, _}) ->
M.
-spec extract_border_class_id (instance()) -> class_id().
extract_border_class_id (M) when is_integer(M) ->
M;
extract_border_class_id ({_, B, _}) ->
B.
-spec extract_variant_ix (instance()) -> non_neg_integer().
extract_variant_ix (M) when is_integer(M) ->
0;
extract_variant_ix ({_, _, V}) ->
V.
-spec from_class_id (class_id()) -> type().
from_class_id (0) ->
#tile
{
id = 0,
name = <<"[Grassland] Grass">>,
cost = 6
};
from_class_id (1) ->
#tile
{
id = 1,
name = <<"[Grassland] Mushroom Infestation">>,
cost = 12
};
from_class_id (2) ->
#tile
{
id = 2,
name = <<"[Grassland] Tree Remains">>,
cost = 24
};
from_class_id (3) ->
#tile
{
id = 3,
name = <<"[Grassland] Clear Water">>,
cost = 201
};
from_class_id(_) ->
from_class_id(0).
-spec cost_when_oob () -> non_neg_integer().
cost_when_oob () -> 255.
-spec get_class_id (type()) -> non_neg_integer().
get_class_id (Tile) -> Tile#tile.id.
-spec get_cost (type()) -> non_neg_integer().
get_cost (Tile) -> Tile#tile.cost.
-spec get_name (type()) -> binary().
get_name (Tile) -> Tile#tile.name.
-spec instance_from_ints
(
{non_neg_integer(), non_neg_integer(), non_neg_integer()}
) -> instance().
instance_from_ints ({M, B, V}) ->
case (M == B) of
true -> M;
_ -> {M, B, V}
end.
-spec instance_to_int_list (instance()) -> list(non_neg_integer()).
instance_to_int_list (M) when is_integer(M) -> [M];
instance_to_int_list ({M, B, V}) -> [M, B, V].
|
