]).
--define(INTERVAL, 100). % In milliseconds
+-define(GEN_INTERVAL, 100). % In milliseconds
--define(CHAR_DEAD, 32). % Space
--define(CHAR_ALIVE, 111). % o
--define(CHAR_BAR, 45). % -
+-define(CHAR_DEAD, 32). % " "
+-define(CHAR_ALIVE, 111). % "o"
+-define(CHAR_BAR, 45). % "-"
-record(state, {x :: integer()
,state_pairs :: list(tuple(integer(), integer())) | []
,replies_pending :: integer()
,gen_id :: integer()
+ ,gen_began :: erlang:timestamp()
}).
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
%% ============================================================================
,replies_pending = 0
,gen_id = 0
},
- ok = schedule_next_gen(),
+ NextGenDelay = 0,
+ ok = schedule_next_gen(NextGenDelay),
{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,
+handle_info(next_gen,
#state{cells=Cells
,num_cells=NumCells
,state_pairs=[]
,gen_id=GenID
}=State) ->
+ GenBegan = os:timestamp(),
NewGenID = GenID + 1,
- ok = cast_all(Cells, {next_gen, NewGenID}),
+ 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
,state_pairs=StatePairs
,replies_pending=RepliesPending
,gen_id=GenID
+ ,gen_began=GenBegan
,num_cells=NumCells
}=State) ->
),
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~n",
- [X, Y, NumCells, NewNDead, NewNAlive, GenID]
+ "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 = timer:sleep(?INTERVAL),
- ok = schedule_next_gen(),
+
+ ok = schedule_next_gen(NextGenDelay),
{noreply, NewState#state{state_pairs=[]}};
_N ->
{noreply, State}.
-handle_info(_Msg, State) ->
- {noreply, State}.
-
-
%% ============================================================================
%% Internal
%% ============================================================================
increment_dead_or_alive(1, NDead, NAlive) -> {NDead, NAlive + 1}.
-schedule_next_gen() ->
- ok = gen_server:cast(?MODULE, next_gen).
-
+schedule_next_gen(Delay) when Delay > 0 ->
+ erlang:send_after(Delay, self(), next_gen),
+ ok;
-cast_all([], _) -> ok;
-cast_all([Server | Servers], Msg) ->
- ok = gen_server:cast(Server, Msg),
- cast_all(Servers, Msg).
+schedule_next_gen(_) ->
+ erlang:send(self(), next_gen),
+ ok.
state_to_char(0) -> ?CHAR_DEAD;