12 终止游戏

来加一个游戏状态好了

本来是要弄回合时间限制
但发现怎样算开始呢？
集满两胜好像也还没有说谁获胜了。

建立游戏之後，正常的进行游戏的话，依照顺序会有

1. 等待guest
2. 进行中
3. host获胜 / guest获胜

等等 等待guest 应该不是核心游戏这层的，在这边应该只会有两个

1. 进行中
2. host获胜 / guest获胜

status 可能会有 :start, :host_win, :guest_win

来把它加进初始 Game struct

  defstruct host: %{desk: [], hand: initial_hand, wins: 0},
            guest: %{desk: [], hand: initial_hand, wins: 0},
            turn: 1,
            round: 1,
            status: :start

检查胜利

检查胜利的时间点，好像又只能放在出牌後，感觉太多东西在那边了，
没关系，先放，有想到更好的再改
应该是接在 |> end_round 後面，来做一个方法检查有没有人 wins: 2

  def handle_cast({:play_card, player, card}, game) do
    game =
      game
      |> play_card_for(player, card)
      |> end_turn()
      |> add_wins()
      |> end_round()
      |> end_game()

    {:noreply, game}
  end

end_game 方法跟前几个比单纯很多

  defp end_game(%{guest: %{wins: 2}} = game), do: Map.replace game, :status, :guest_win
  defp end_game(%{host: %{wins: 2}} = game), do: Map.replace game, :status, :host_win
  defp end_game(game), do: game

来做一个假的後期游戏来测

  def start_late_game do
    late_game = %Game{
      guest: %{wins: 1, desk: [3, 2, 1, 3, 2], hand: [1]},
      host: %{wins: 1, desk: [6, 3, 3, 5, 2], hand: [2]},
      turn: 3,
      round: 2
    }

    GenServer.start_link(__MODULE__, late_game)
  end

iex(1)> import Game
Game
iex(2)> {:ok, pid} = start_late_game
{:ok, #PID<0.113.0>}
iex(3)> status pid
%Game{
  guest: %{desk: [3, 2, 1, 3, 2], hand: [1], wins: 1},
  host: %{desk: [6, 3, 3, 5, 2], hand: [2], wins: 1},
  round: 2,
  status: :start,
  turn: 3
}
iex(4)> play_card pid, :guest, 1
:ok
iex(5)> play_card pid, :host, 2 
:ok
iex(6)> status pid              
%Game{
  guest: %{desk: [3, 2, 1, 3, 2, 1], hand: [], wins: 1},
  host: %{desk: [6, 3, 3, 5, 2, 2], hand: [], wins: 2},
  round: 3,
  status: :host_win,
  turn: 1
}

状态变成获胜了

明天看要来弄每回合出牌限时
还是修一下就算手上没有要出的牌，也可以出的情况