/// <summary>
/// 实现 PlayCard 方法，令玩家出牌
/// </summary>
/// <param name="round">当前回合事件</param>
/// <param name="token">取消标识</param>
/// <returns>返回一个 Task 对象，用于等待玩家出牌完毕</returns>
protected override async Task PlayCard(PlayerRoundEvent round, CancellationToken token)
{
while (ActionPoint > 0)
{
var card = await CherryCard(token);
if (card == null)
{
throw new TimeoutException();
}
CardCollection.RemoveCard(card);
try
{
await card.Play(this, token);
ActionPoint -= card.ActionPoint;
}
catch
{
CardCollection.AddCard(card);
throw;
}
}
}
/// <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);
}
protected virtual Task OnAfterPlayCard(PlayerRoundEvent round, CancellationToken token)
{
return(Task.CompletedTask);
}
protected abstract Task PlayCard(PlayerRoundEvent round, CancellationToken token);