Moved Life implementations into 'life' directory.

[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 204b67f..0000000
--- a/001/src/life_time.erl
+++ /dev/null
@@ -1,186 +0,0 @@
--module(life_time).
--behaviour(gen_server).
-
-
-%% API
--export([start_link/3
-        ,report_state/3
-        ]).
-
-%% Callbacks
--export([init/1
-        ,handle_call/3
-        ,handle_cast/2
-        ,handle_info/2
-        ,terminate/2
-        ,code_change/3
-        ]).
-
-
--define(GEN_INTERVAL, 100).  % In milliseconds
-
--define(CHAR_DEAD,   32).  % " "
--define(CHAR_ALIVE, 111).  % "o"
--define(CHAR_BAR,    45).  % "-"
-
-
--record(state, {x               :: integer()
-               ,y               :: integer()
-               ,cells           :: list(atom())
-               ,num_cells       :: integer()
-               ,num_dead        :: integer()
-               ,num_alive       :: integer()
-               ,state_pairs     :: list(tuple(integer(), integer())) | []
-               ,replies_pending :: integer()
-               ,gen_id          :: integer()
-               ,gen_began       :: erlang:timestamp()
-               }).
-
-
-%% ============================================================================
-%% 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, GenID, CellState) ->
-    gen_server:cast(?MODULE, {report_state, {CellID, GenID, CellState}}).
-
-
-%% ============================================================================
-%% Callbacks (unused)
-%% ============================================================================
-
-handle_call(_Msg, _From, State)  -> {reply, ok, State}.
-code_change(_Old, State, _Other) -> {ok, State}.
-terminate(_Reason, State)        -> {ok, State}.
-
-
-%% ============================================================================
-%% 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
-                  },
-    NextGenDelay = 0,
-    ok = schedule_next_gen(NextGenDelay),
-    {ok, State}.
-
-
-handle_info(next_gen,
-    #state{cells=Cells
-          ,num_cells=NumCells
-          ,state_pairs=[]
-          ,gen_id=GenID
-          }=State) ->
-
-    GenBegan = os:timestamp(),
-    NewGenID = GenID + 1,
-    ok = life_lib:cast_one2all(Cells, {next_gen, NewGenID}),
-    NewState = State#state{replies_pending=NumCells
-                          ,gen_id=NewGenID
-                          ,gen_began=GenBegan
-                          ,num_dead=0
-                          ,num_alive=0
-                          },
-    {noreply, NewState};
-
-handle_info(_Msg, State) ->
-    {noreply, State}.
-
-
-handle_cast({report_state, {CellID, GenID, CellState}},
-    #state{x=X
-          ,y=Y
-          ,num_dead=NDead
-          ,num_alive=NAlive
-          ,state_pairs=StatePairs
-          ,replies_pending=RepliesPending
-          ,gen_id=GenID
-          ,gen_began=GenBegan
-          ,num_cells=NumCells
-          }=State) ->
-
-    NewStatePairs = [{CellID, CellState} | StatePairs],
-    NewRepliesPending = RepliesPending - 1,
-    {NewNDead, NewNAlive} = increment_dead_or_alive(CellState, NDead, NAlive),
-    NewState = State#state{replies_pending=NewRepliesPending
-                          ,num_dead=NewNDead
-                          ,num_alive=NewNAlive
-                          },
-
-    case NewRepliesPending of
-        0 ->
-            SortedStatePairs = lists:sort(
-                fun({A, _}, {B, _}) -> A < B end,
-                NewStatePairs
-            ),
-            StateChars = [state_to_char(S) || {_, S} <- SortedStatePairs],
-
-            GenDurationMic = timer:now_diff(os:timestamp(), GenBegan),
-            GenDurationMil = GenDurationMic / 1000,
-            GenDurationSec = GenDurationMic / 1000000,
-            NextGenDelay = round(?GEN_INTERVAL - GenDurationMil),
-
-            ok = life_observer:log_generation(GenID, GenDurationSec, NewNDead, NewNAlive),
-
-            ok = io:format(
-                "X: ~b Y: ~b CELLS: ~b DEAD: ~b ALIVE: ~b GENERATION: ~b DURATION: ~f~n",
-                [X, Y, NumCells, NewNDead, NewNAlive, GenID, GenDurationSec]
-            ),
-            ok = do_print_bar(X),
-            ok = do_print_state_chars(X, StateChars),
-
-            ok = schedule_next_gen(NextGenDelay),
-            {noreply, NewState#state{state_pairs=[]}};
-
-        _N ->
-            {noreply, NewState#state{state_pairs=NewStatePairs}}
-    end;
-
-handle_cast(_Msg, State) ->
-    {noreply, State}.
-
-
-%% ============================================================================
-%% Internal
-%% ============================================================================
-
-increment_dead_or_alive(0, NDead, NAlive) -> {NDead + 1, NAlive};
-increment_dead_or_alive(1, NDead, NAlive) -> {NDead, NAlive + 1}.
-
-
-schedule_next_gen(Delay) when Delay > 0 ->
-    erlang:send_after(Delay, self(), next_gen),
-    ok;
-
-schedule_next_gen(_) ->
-    erlang:send(self(), next_gen),
-    ok.
-
-
-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)]]).