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301 Zeilen
8.9 KiB
301 Zeilen
8.9 KiB
-module(game_core).
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-export([start_game/3, play_cards/3, get_game_state/1, is_valid_play/2]).
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-export([init_deck/0, deal_cards/1, get_card_type/1, compare_cards/2]).
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-record(game_state, {
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players = [], % [{Pid, Cards, Role}]
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current_player, % Pid
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last_play = [], % {Pid, Cards}
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played_cards = [], % [{Pid, Cards}]
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stage = waiting, % waiting | playing | finished
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landlord_cards = [] % 地主牌
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}).
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%% 初始化扑克牌
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init_deck() ->
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Colors = ["♠", "♥", "♣", "♦"],
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Numbers = ["3", "4", "5", "6", "7", "8", "9", "10", "J", "Q", "K", "A", "2"],
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Cards = [{Color, Number} || Color <- Colors, Number <- Numbers],
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Jokers = [{"", "小王"}, {"", "大王"}],
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shuffle(Cards ++ Jokers).
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%% 发牌
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deal_cards(Deck) ->
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{Players, Landlord} = lists:split(51, Deck),
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{lists:sublist(Players, 1, 17),
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lists:sublist(Players, 18, 17),
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lists:sublist(Players, 35, 17),
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Landlord}.
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%% 开始游戏
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start_game(Player1, Player2, Player3) ->
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Deck = init_deck(),
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{Cards1, Cards2, Cards3, LandlordCards} = deal_cards(Deck),
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% 随机选择地主
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LandlordIdx = rand:uniform(3),
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Players = assign_roles([{Player1, Cards1}, {Player2, Cards2}, {Player3, Cards3}], LandlordIdx),
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#game_state{
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players = Players,
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current_player = element(1, lists:nth(LandlordIdx, Players)),
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landlord_cards = LandlordCards
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}.
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%% 出牌
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play_cards(GameState, PlayerPid, Cards) ->
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case validate_play(GameState, PlayerPid, Cards) of
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true ->
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NewState = update_game_state(GameState, PlayerPid, Cards),
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check_game_end(NewState);
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false ->
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{error, invalid_play}
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end.
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%% 验证出牌
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validate_play(GameState, PlayerPid, Cards) ->
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case get_player_cards(GameState, PlayerPid) of
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{ok, PlayerCards} ->
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has_cards(PlayerCards, Cards) andalso
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is_valid_play(Cards, GameState#game_state.last_play);
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_ ->
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false
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end.
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%% 判断牌型
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get_card_type(Cards) ->
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Sorted = sort_cards(Cards),
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case analyze_pattern(Sorted) of
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{Type, Value} -> {ok, Type, Value};
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invalid -> {error, invalid_pattern}
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end.
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%% 内部函数
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shuffle(List) ->
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[X || {_, X} <- lists:sort([{rand:uniform(), N} || N <- List])].
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analyze_pattern(Cards) ->
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case length(Cards) of
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1 -> {single, card_value(hd(Cards))};
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2 -> analyze_pair(Cards);
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3 -> analyze_triple(Cards);
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4 -> analyze_four_cards(Cards);
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_ -> analyze_complex_pattern(Cards)
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end.
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analyze_pair([{_, N}, {_, N}]) -> {pair, card_value({any, N})};
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analyze_pair(_) -> invalid.
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analyze_triple([{_, N}, {_, N}, {_, N}]) -> {triple, card_value({any, N})};
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analyze_triple(_) -> invalid.
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analyze_four_cards(Cards) ->
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case group_cards(Cards) of
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#{4 := [Value]} -> {bomb, card_value({any, Value})};
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_ -> analyze_four_with_two(Cards)
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end.
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analyze_complex_pattern(Cards) ->
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case is_straight(Cards) of
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true -> {straight, highest_card_value(Cards)};
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false -> analyze_other_patterns(Cards)
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end.
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%% 获取游戏状态
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get_game_state(GameId) ->
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% 简单实现，实际应该从某种存储中获取
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{ok, #game_state{}}.
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%% 初始化游戏状态
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init_game_state() ->
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% 创建一个空的游戏状态
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#game_state{
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players = [],
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current_player = undefined,
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last_play = [],
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played_cards = [],
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stage = waiting,
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landlord_cards = []
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}.
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%% 判断出牌是否有效
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is_valid_play(Cards, LastPlay) ->
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% 如果是第一手牌，任何合法牌型都可以
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case LastPlay of
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[] -> is_valid_card_type(Cards);
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{_, LastCards} ->
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% 检查牌型是否相同且大小是否更大
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{ok, Type1, Value1} = get_card_type(Cards),
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{ok, Type2, Value2} = get_card_type(LastCards),
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(Type1 =:= Type2 andalso Value1 > Value2) orelse
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(Type1 =:= bomb andalso Type2 =/= bomb)
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end.
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%% 判断牌型是否合法
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is_valid_card_type(Cards) ->
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case get_card_type(Cards) of
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{ok, _, _} -> true;
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_ -> false
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end.
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%% 比较两手牌的大小
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compare_cards(Cards1, Cards2) ->
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{ok, Type1, Value1} = get_card_type(Cards1),
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{ok, Type2, Value2} = get_card_type(Cards2),
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if
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Type1 =:= bomb andalso Type2 =/= bomb -> greater;
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Type2 =:= bomb andalso Type1 =/= bomb -> lesser;
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Type1 =:= Type2 andalso Value1 > Value2 -> greater;
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Type1 =:= Type2 andalso Value1 < Value2 -> lesser;
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true -> incomparable
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end.
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%% 分配角色
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assign_roles(PlayerCards, LandlordIdx) ->
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lists:map(
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fun({Idx, {Pid, Cards}}) ->
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Role = case Idx of
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LandlordIdx -> landlord;
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_ -> farmer
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end,
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{Pid, Cards, Role}
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end,
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lists:zip(lists:seq(1, length(PlayerCards)), PlayerCards)
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).
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%% 更新游戏状态
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update_game_state(GameState, PlayerPid, Cards) ->
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% 更新玩家手牌
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UpdatedPlayers = lists:map(
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fun({Pid, PlayerCards, Role}) when Pid =:= PlayerPid ->
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{Pid, PlayerCards -- Cards, Role};
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(Player) -> Player
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end,
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GameState#game_state.players
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),
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% 更新出牌记录和当前玩家
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NextPlayer = get_next_player(GameState, PlayerPid),
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GameState#game_state{
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players = UpdatedPlayers,
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current_player = NextPlayer,
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last_play = {PlayerPid, Cards},
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played_cards = [{PlayerPid, Cards} | GameState#game_state.played_cards]
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}.
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%% 获取下一个玩家
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get_next_player(GameState, CurrentPid) ->
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Players = GameState#game_state.players,
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PlayerPids = [Pid || {Pid, _, _} <- Players],
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CurrentIdx = get_player_index(PlayerPids, CurrentPid),
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lists:nth(1 + (CurrentIdx rem length(PlayerPids)), PlayerPids).
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%% 获取玩家索引
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get_player_index(PlayerPids, TargetPid) ->
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{Idx, _} = lists:foldl(
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fun(Pid, {Idx, Found}) ->
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case Pid =:= TargetPid of
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true -> {Idx, Idx};
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false -> {Idx + 1, Found}
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end
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end,
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{1, not_found},
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PlayerPids
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),
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Idx.
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%% 检查游戏是否结束
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check_game_end(GameState) ->
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case lists:any(
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fun({_, Cards, _}) -> length(Cards) =:= 0 end,
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GameState#game_state.players
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) of
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true ->
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Winner = lists:keyfind(0, 2, GameState#game_state.players),
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{game_over, Winner, GameState#game_state{stage = finished}};
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false ->
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{continue, GameState}
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end.
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%% 获取玩家手牌
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get_player_cards(GameState, PlayerPid) ->
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case lists:keyfind(PlayerPid, 1, GameState#game_state.players) of
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{_, Cards, _} -> {ok, Cards};
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false -> {error, player_not_found}
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end.
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%% 检查玩家是否有这些牌
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has_cards(PlayerCards, CardsToPlay) ->
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lists:all(
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fun(Card) ->
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Count = count_card(PlayerCards, Card),
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CountToPlay = count_card(CardsToPlay, Card),
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Count >= CountToPlay
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end,
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lists:usort(CardsToPlay)
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).
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%% 计算特定牌的数量
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count_card(Cards, TargetCard) ->
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length([Card || Card <- Cards, Card =:= TargetCard]).
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%% 分析四带二
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analyze_four_with_two(Cards) ->
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Grouped = group_cards(Cards),
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case maps:get(4, Grouped, []) of
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[Value] ->
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case length(Cards) of
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6 -> {four_with_two, card_value({any, Value})};
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_ -> invalid
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end;
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_ -> invalid
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end.
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%% 分组牌
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group_cards(Cards) ->
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lists:foldl(
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fun({_, Number}, Acc) ->
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Count = maps:get(Number, Acc, 0) + 1,
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Acc#{Number => Count}
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end,
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#{},
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Cards
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).
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%% 获取最高牌值
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highest_card_value(Cards) ->
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lists:max([card_value(Card) || Card <- Cards]).
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%% 牌值转换
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card_value({_, "3"}) -> 3;
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card_value({_, "4"}) -> 4;
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card_value({_, "5"}) -> 5;
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card_value({_, "6"}) -> 6;
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card_value({_, "7"}) -> 7;
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card_value({_, "8"}) -> 8;
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card_value({_, "9"}) -> 9;
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card_value({_, "10"}) -> 10;
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card_value({_, "J"}) -> 11;
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card_value({_, "Q"}) -> 12;
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card_value({_, "K"}) -> 13;
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card_value({_, "A"}) -> 14;
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card_value({_, "2"}) -> 15;
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card_value({_, "小王"}) -> 16;
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card_value({_, "大王"}) -> 17;
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card_value({any, Value}) -> card_value({"♠", Value}).
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%% 检查是否为顺子
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is_straight(Cards) ->
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Values = [card_value(Card) || Card <- Cards],
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SortedValues = lists:sort(Values),
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length(SortedValues) >= 5 andalso
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lists:max(SortedValues) =< 14 andalso % A以下的牌才能组成顺子
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SortedValues =:= lists:seq(hd(SortedValues), lists:last(SortedValues)).
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%% 分析其他牌型
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analyze_other_patterns(Cards) ->
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% 实现其他复杂牌型的分析，如飞机、连对等
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% 简单实现，实际应该有更复杂的逻辑
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invalid.
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%% 排序牌
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sort_cards(Cards) ->
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lists:sort(fun(A, B) -> card_value(A) =< card_value(B) end, Cards).
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