131 lines
4.4 KiB
Erlang
131 lines
4.4 KiB
Erlang
%% @doc This module handles communication between a player and GGS. This module is
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%% responsible for:
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%% * The storage of the player socket, player token and a table token.
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%% * Ability to fetch a player token.
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%% * Forwarding messages from players to the game
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%% * Remove a player from GGS
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-module(ggs_player).
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-behaviour(gen_server).
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-export([init/1, handle_call/3, handle_cast/2, handle_info/2,
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terminate/2, code_change/3]).
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-export([start/1, notify/3, notify_game/2, get_token/1, stop/1]).
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-vsn(1.0).
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-record(state, {
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token,
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socket,
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table,
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protocol }).
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%% @doc Spawns a process representing the player in GGS. Takes the player socket as
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%% an argument for storage and later usage. Creates a unique player token
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%% identifying the player.
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%% @spec start_link(Socket::socket()) -> {ok, Pid} | {error, Reason}
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start(Socket) ->
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gen_server:start(?MODULE, [Socket], []).
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join_table(Num) ->
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case ggs_coordinator:join_table(integer_to_list(Num)) of
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{ok, T} ->
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%io:format("Joining existing table: ~p~n", [T]),
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T;
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{error, no_such_table} ->
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case ggs_coordinator:create_table({force, integer_to_list(Num)}) of
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{ok, TBToken} -> ok
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end,
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case ggs_coordinator:join_table(integer_to_list(Num)) of
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{ok, T} -> %io:format("Creating new table: ~p~n", [T]),
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T;
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{error, E} -> %erlang:display(E),
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join_table(Num+1)
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end;
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{error, table_full} ->
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%erlang:display("Table full!"),
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join_table(Num+1)
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end.
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init([Socket]) ->
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{ok, Protocol} = ggs_protocol:start_link(),
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{ok, Token} = ggs_coordinator:join_lobby(),
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erlang:port_connect(Socket, self()),
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Table = join_table(1),
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State = #state{
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token = Token,
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socket = Socket,
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table = Table,
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protocol = Protocol
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},
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%ggs_protocol:parse(Protocol, Data),
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ggs_player:notify(self(), self(), {"hello", Token}), % send hello to the client
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{ok, State}.
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%% @doc Handles incoming messages from the GGS and forwards them through the player
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%% socket to the player.
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%% @spec notify(Player::Pid(), From::Pid(),
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%% {Command::String(), Message::string()}) -> ok
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notify(Player, _From, Message) ->
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gen_server:cast(Player, {notify, Message}).
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%% @doc Handles incomming messages form a client and forwards them
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%% through to the game_vm
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notify_game(Player, Message) ->
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gen_server:cast(Player, Message).
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%% @doc Get the player token uniquely representing the player.
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%% @spec get_token() -> string()
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get_token(_Player) ->
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ggs_logger:not_implemented().
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%% @doc Properly terminates the player process. The player token will be lost
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%% together with the table token. It should also close the player socket and the
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%% process should return in the end.
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%% @spec stop(Table::pid()) -> Reason::string()
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stop(Player) ->
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gen_server:cast(Player, stop).
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%% Internals
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handle_call(_Request, _From, St) -> {stop, unimplemented, St}.
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handle_cast({tcp, _Socket, Data}, #state { protocol = Protocol } = _State) ->
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ggs_protocol:parse(Protocol, Data);
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handle_cast({tcp_closed, _Socket}, _State) ->
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erlang:display("Client disconnected, but THIS IS NOT SUPPORTED YET!~n");
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handle_cast({notify, Message}, #state { socket = Socket } = State) ->
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gen_tcp:send(Socket, ggs_protocol:create_message(Message)),
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{noreply, State};
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handle_cast({srv_cmd, "hello", _Headers, Data}, #state { token = Token } = State) ->
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ggs_player:notify(self(), self(), {"hello", Token}),
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{noreply, State};
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handle_cast({srv_cmd, "define", _Headers, Data}, #state { table = Table } = State) ->
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ggs_table:notify(Table, self(), {server, define, Data}),
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{noreply, State};
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handle_cast({game_cmd, Command, _Headers, Data}, #state { table = Table } = State) ->
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ggs_table:notify(Table, self(), {game, Command, Data}),
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{noreply, State};
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handle_cast(Request, St) ->
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{stop, unimplemented1, St}.
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handle_info({tcp, _Socket, Data}, #state { protocol = Protocol } = State) ->
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ggs_protocol:parse(Protocol, Data),
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{noreply, State}.
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terminate(Reason, State) ->
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erlang:display(Reason),
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ggs_table:remove_player(State#state.table, self()),
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% ggs_coordinator:remove_player(self(), self()), % not implemented yet
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% TODO: release Socket
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ok.
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code_change(_OldVsn, St, _Extra) -> {ok, St}.
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