/// <summary>
/// 玩家出牌
/// </summary>
/// <param name="player">轮到出牌的玩家</param>
/// <param name="token">取消标识</param>
/// <returns>获取一个 Task，用于等待这个玩家处理结束</returns>
protected virtual async Task PlayerPlay(GameRoundEvent roundEvnet, CardGamePlayer player, CancellationToken token)
{
await OnBeforePlay(roundEvnet, player, token);
await player.Play(roundEvnet, token);
await OnAfterPlay(roundEvnet, player, token);
}
/// <summary>
/// 开始一个回合
/// </summary>
/// <param name="token">取消标识</param>
/// <returns>获取一个 Task，用于等待这个回合游戏结束</returns>
protected virtual async Task PlayAround(CancellationToken token)
{
AnnounceSystemMessage("第 {0} 回合", Rounds);
var roundEvent = new GameRoundEvent(Rounds);
foreach (CardGamePlayer player in Players)
{
await PlayerPlay(roundEvent, player, token);
token.ThrowIfCancellationRequested();
}
Rounds++;
}
/// <summary>
/// 玩家进行该回合的操作
/// </summary>
/// <param name="token">取消标识</param>
/// <returns>获取一个用于等待玩家处理完成的 Task</returns>
public virtual async Task Play(GameRoundEvent roundEvent, CancellationToken token)
{
Game.AnnounceMessage("轮到 {0} 出牌", PlayerName);
var round = new PlayerRoundEvent(roundEvent, this);
await OnGameEvent(round);
await OnBeforePlayCard(round, token);
try
{
await PlayCard(round, token);
}
catch (TimeoutException)
{
await OnTimeout();
}
await OnAfterPlayCard(round, token);
}
/// <summary>
/// 重写 PlayerPlay 方法，在每个玩家操作完毕后，检查所有玩家是否都还活着
/// </summary>
/// <param name="player">正在执行操作的玩家</param>
/// <param name="token">取消标识</param>
/// <returns>获取一个 Task 用于等待操作完成</returns>
protected override async Task PlayerPlay(GameRoundEvent roundEvent, CardGamePlayer player, CancellationToken token)
{
await base.PlayerPlay(roundEvent, player, token);
await EnsurePlayersAlive();
}
/// <summary>
/// 创建 PlayerRoundEvent 对象
/// </summary>
/// <param name="player">当前出牌的玩家</param>
public PlayerRoundEvent(GameRoundEvent roundEvent, CardGamePlayer player)
{
Player = player;
RoundEvent = roundEvent;
}
protected virtual Task OnAfterPlay(GameRoundEvent roundEvent, CardGamePlayer player, CancellationToken token)
{
return(Task.CompletedTask);
}