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[cellular-automata.git] / 001 / src / life_time.erl

diff --git a/001/src/life_time.erl b/001/src/life_time.erl
deleted file mode 100644 (file)
index b47073c..0000000
--- a/001/src/life_time.erl
+++ /dev/null
@@ -1,163 +0,0 @@
--module(life_time).
--behaviour(gen_server).
-
-
-%% API
--export([start_link/3
-        ,report_state/2
-        ]).
-
-%% Callbacks
--export([init/1
-        ,handle_call/3
-        ,handle_cast/2
-        ,handle_info/2
-        ,terminate/2
-        ,code_change/3
-        ]).
-
-
--define(INTERVAL, 100).  % In milliseconds
-
--define(CHAR_DEAD,   32).  % Space
--define(CHAR_ALIVE, 111).  % o
--define(CHAR_BAR,    45).  % -
-
-
--record(state, {x               :: integer()
-               ,y               :: integer()
-               ,cells           :: list(atom())
-               ,num_cells       :: integer()
-               ,state_pairs     :: list(tuple(integer(), integer())) | []
-               ,replies_pending :: integer()
-               ,gen_id          :: integer()
-               }).
-
-
-%% ============================================================================
-%% API
-%% ============================================================================
-
-start_link(X, Y, Cells) ->
-    ServerName = {local, ?MODULE},
-    Args = [X, Y, Cells],
-    Opts = [],
-    gen_server:start_link(ServerName, ?MODULE, Args, Opts).
-
-
-report_state(CellID, CellState) ->
-    gen_server:cast(?MODULE, {report_state, {CellID, CellState}}).
-
-
-%% ============================================================================
-%% Callbacks
-%% ============================================================================
-
-init([X, Y, Cells]) ->
-    State = #state{x               = X
-                  ,y               = Y
-                  ,cells           = Cells
-                  ,num_cells       = length(Cells)
-                  ,state_pairs     = []
-                  ,replies_pending = 0
-                  ,gen_id          = 0
-                  },
-    schedule_next_gen(),
-    {ok, State}.
-
-
-terminate(_Reason, State) ->
-    {ok, State}.
-
-
-code_change(_Old, State, _Other) ->
-    {ok, State}.
-
-
-handle_call(_Msg, _From, State) ->
-    {reply, ok, State}.
-
-
-handle_cast(next_gen,
-    #state{cells=Cells
-          ,num_cells=NumCells
-          ,state_pairs=[]
-          ,gen_id=GenID
-          }=State) ->
-
-    NewGenID = GenID + 1,
-    ok = cast_all(Cells, {next_gen, NewGenID}),
-    {noreply, State#state{replies_pending=NumCells, gen_id=NewGenID}};
-
-handle_cast({report_state, {ID, CellState}},
-    #state{x=X
-          ,y=Y
-          ,state_pairs=StatePairs
-          ,replies_pending=RepliesPending
-          ,gen_id=GenID
-          ,num_cells=NumCells
-          }=State) ->
-
-    NewStatePairs = [{ID, CellState} | StatePairs],
-    NewRepliesPending = RepliesPending - 1,
-    NewState = State#state{replies_pending=NewRepliesPending},
-
-    case NewRepliesPending of
-        0 ->
-            SortedStatePairs = lists:sort(
-                fun({A, _}, {B, _}) -> A < B end,
-                NewStatePairs
-            ),
-            StateChars = [state_to_char(S) || {_, S} <- SortedStatePairs],
-
-            ok = io:format(
-                "X: ~b Y: ~b CELLS: ~b GENERATION: ~b~n",
-                [X, Y, NumCells, GenID]
-            ),
-            ok = do_print_bar(X),
-
-            ok = do_print_state_chars(X, StateChars),
-
-            ok = timer:sleep(?INTERVAL),
-            schedule_next_gen(),
-            {noreply, NewState#state{state_pairs=[]}};
-
-        _N ->
-            {noreply, NewState#state{state_pairs=NewStatePairs}}
-    end;
-
-handle_cast(_Msg, State) ->
-    {noreply, State}.
-
-
-handle_info(_Msg, State) ->
-    {noreply, State}.
-
-
-%% ============================================================================
-%% Internal
-%% ============================================================================
-
-schedule_next_gen() ->
-    gen_server:cast(?MODULE, next_gen).
-
-
-cast_all([], _) -> ok;
-cast_all([Server | Servers], Msg) ->
-    ok = gen_server:cast(Server, Msg),
-    cast_all(Servers, Msg).
-
-
-state_to_char(0) -> ?CHAR_DEAD;
-state_to_char(1) -> ?CHAR_ALIVE.
-
-
-do_print_state_chars(_, []) -> ok;
-do_print_state_chars(X, Chars) ->
-    {XChars, RestChars} = lists:split(X, Chars),
-    ok = io:format([XChars, $\n]),
-    do_print_state_chars(X, RestChars).
-
-
-do_print_bar(X) ->
-    io:format("~s~n", [[?CHAR_BAR || _ <- lists:seq(1, X - 1)]]).