.Net Core使用SignalR實現鬥地主遊戲

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之前開內部培訓，說到實時web應用這一塊講到瞭SignalR，我說找時間用它做個遊戲玩玩，後面時間緊張就一直沒安排。這兩天閑瞭又想起這個事，考慮後決定用2天時間寫個鬥D主，安排瞭前端同學寫客戶端，我寫遊戲邏輯和服務。

這個項目難度並不高，但是遊戲邏輯還是挺繞的，聯調過程中也發現解決瞭很多小問題。來園子裡整理一篇文章，記錄一下。

基礎的介紹就免瞭，畢竟官網跟著走兩圈啥都懂瞭。沒基礎的可以戳這裡，是我之前寫的一篇SignalR基礎介紹，帶有一個極簡聊天室。

tips：文章結尾有開源地址，遊戲數據都是本地的，改下IP運行起來就可以玩瞭。

直接上幹貨，首先是數據模型：

/// <summary>
    /// 用戶信息
    /// </summary>
    public class Customer
    {
        /// <summary>
        /// 唯一ID
        /// </summary>
        public string? ID { get; set; }

        /// <summary>
        /// 昵稱
        /// </summary>
        public string? NickName { get; set; }

        /// <summary>
        /// 卡片
        /// </summary>
        public List<string> Card { get; set; }
    }


    /// <summary>
    /// 房間
    /// </summary>
    public class Room
    {
        /// <summary>
        /// 房間名
        /// </summary>
        public string Name { get; set; }

        /// <summary>
        /// 房主id
        /// </summary>
        public string Masterid { get; set; }

        /// <summary>
        /// 當前出牌人
        /// </summary>
        public int Curr { get; set; }

        /// <summary>
        /// 當前卡片
        /// </summary>
        public List<string> CurrCard { get; set; } = new List<string>();

        /// <summary>
        /// 當前卡片打出人
        /// </summary>
        public string ExistingCardClient { get; set; }

        /// <summary>
        /// 房間成員列表
        /// </summary>
        public List<Customer> Customers { get; set; } = new List<Customer>();
    }

tips：隻是單純為瞭鬥D主設計的，商用版肯定不能這麼搞，參考請慎用。

有瞭數據模型，自然少不瞭CRUD：

/// <summary>
    /// 用戶操作
    /// </summary>
    public static class CustomerAction
    {
        /// <summary>
        /// 用戶列表
        /// </summary>
        private static List<Customer> cusList = new List<Customer>();

        /// <summary>
        /// 不存在則新增，存在則修改昵稱
        /// </summary>
        /// <param name="customer"></param>
        public static void Create(Customer customer)
        {
            Customer curr = null;

            if (cusList.Count > 0)
                curr = cusList.Where(x => x.ID == customer.ID).FirstOrDefault();

            if (curr is null)
                cusList.Add(customer);
            else
            {
                curr.NickName = customer.NickName;

                Up4ID(curr);
            }
        }

        /// <summary>
        /// 用戶列表
        /// </summary>
        /// <returns></returns>
        public static List<Customer> GetList()
        {
            return cusList;
        }

        /// <summary>
        /// 獲取單個
        /// </summary>
        /// <param name="id"></param>
        /// <returns></returns>
        public static Customer GetOne(string id)
        {
            return cusList.Where(x => x.ID == id).FirstOrDefault();
        }

        /// <summary>
        /// 刪除用戶
        /// </summary>
        /// <param name="id"></param>
        public static void Delete(string id)
        {
            cusList.RemoveAll(x => x.ID == id);
        }

        /// <summary>
        /// 增加卡片
        /// </summary>
        /// <param name="id"></param>
        /// <param name="cards"></param>
        public static void InCard(string id, List<string> cards)
        {
            Customer customer = cusList.Where(x => x.ID == id).FirstOrDefault();

            if (customer.Card is null)
                customer.Card = cards;
            else
                customer.Card.AddRange(cards);

            Up4ID(customer);
        }

        /// <summary>
        /// 扣除卡片
        /// </summary>
        /// <param name="id"></param>
        /// <param name="cards"></param>
        /// <param name="group"></param>
        /// <returns></returns>
        public static bool OutCard(string id, List<string> cards, Room group)
        {
            Customer client = cusList.Where(x => x.ID == id).FirstOrDefault();

            if (client is null)
                return false;

            //卡片不匹配直接失敗
            if (client.Card.Where(x => cards.Contains(x)).ToList().Count != cards.Count)
                return false;

            //不符合出牌規則直接失敗
            if (!new Game.WithCard().Rule(group.CurrCard, cards, group.ExistingCardClient is null || group.ExistingCardClient == id))
                return false;

            foreach (var item in cards)
            {
                client.Card.Remove(item);
            }

            group.CurrCard = cards;

            group.ExistingCardClient = id;

            Up4ID(client);

            RoomAction.Up4Name(group);

            return true;
        }

        /// <summary>
        /// 更新（根據ID）
        /// </summary>
        /// <param name="customer"></param>
        /// <returns></returns>
        public static bool Up4ID(Customer customer)
        {
            if (cusList.Count == 0)
                return false;

            cusList.RemoveAll(x => x.ID == customer.ID);

            cusList.Add(customer);

            return true;
        }
    }


    /// <summary>
    /// 房間操作
    /// </summary>
    public static class RoomAction
    {
        /// <summary>
        /// 房間列表
        /// </summary>
        private static List<Room> roomList = new List<Room>();

        /// <summary>
        /// 新增房間
        /// 如果房間已存在則不新增
        /// </summary>
        /// <param name="group"></param>
        public static void Create(Room group)
        {
            if (!roomList.Where(x => x.Name == group.Name).Any())
                roomList.Add(group);
        }

        /// <summary>
        /// 獲取列表
        /// </summary>
        /// <returns></returns>
        public static List<Room> GetList()
        {
            return roomList;
        }

        /// <summary>
        /// 獲取單個
        /// </summary>
        /// <param name="masterid">房主id</param>
        /// <param name="roomName">房間名稱</param>
        /// <returns></returns>
        public static Room GetOne(string masterid = null, string roomName = null)
        {
            if (roomList.Count == 0)
                return null;

            if (masterid != null)
                return roomList.Where(x => x.Masterid == masterid).FirstOrDefault();

            if (roomName != null)
                return roomList.Where(x => x.Name == roomName).FirstOrDefault();

            return null;
        }

        /// <summary>
        /// 加入房間
        /// </summary>
        /// <param name="client"></param>
        /// <param name="roomName"></param>
        public static bool Join(Customer client, string roomName)
        {
            if (roomList.Count == 0)
                return false;

            var room = roomList.Where(x => x.Name == roomName).FirstOrDefault();

            if (room is null)
                return false;

            if (room.Customers.Count == 3)
                return false;

            room.Customers.Add(client);

            Up4Name(room);

            return true;
        }

        /// <summary>
        /// 刪除房間
        /// </summary>
        /// <param name="masterid">房主id</param>
        public static bool Delete(string masterid)
        {
            if (roomList.Count == 0)
                return false;

            var room = roomList.Where(x => x.Masterid == masterid).FirstOrDefault();

            if (room == null)
                return false;

            roomList.Remove(room);

            return true;
        }

        /// <summary>
        /// 更新（根據房名）
        /// </summary>
        /// <param name="room"></param>
        /// <returns></returns>
        public static bool Up4Name(Room room)
        {
            if (roomList.Count == 0)
                return false;

            roomList.RemoveAll(x => x.Name == room.Name);

            roomList.Add(room);

            return true;
        }

        /// <summary>
        /// 更新當前出牌人
        /// </summary>
        /// <param name="roomName"></param>
        /// <param name="index">傳入則強制修改，不傳按規則走</param>
        public static Customer ChangeCurr(string roomName, int index = -1)
        {
            var room = roomList.Where(x => x.Name == roomName).FirstOrDefault();

            if (index != -1)
                room.Curr = index;
            else
                room.Curr = (room.Curr + 1) % 3;

            Up4Name(room);

            return room.Customers[room.Curr];
        }
    }

因為所有數據都是通過靜態屬性保存的，所以大部分都是linq操作（原諒我linq水平有限）。

接下來是遊戲邏輯：

/// <summary>
    /// 卡片相關
    /// </summary>
    public class WithCard
    {
        /// <summary>
        /// 黑桃-S、紅桃-H、梅花-C、方塊-D
        /// BG大王，SG小王，14-A，15-2
        /// </summary>
        readonly List<string> Cards = new List<string>()
        {
            "S-14","S-15","S-3","S-4","S-5","S-6","S-7","S-8","S-9","S-10","S-11","S-12","S-13",
            "H-14","H-15","H-3","H-4","H-5","H-6","H-7","H-8","H-9","H-10","H-11","H-12","H-13",
            "C-14","C-15","C-3","C-4","C-5","C-6","C-7","C-8","C-9","C-10","C-11","C-12","C-13",
            "D-14","D-15","D-3","D-4","D-5","D-6","D-7","D-8","D-9","D-10","D-11","D-12","D-13",
            "BG-99","SG-88"
        };

        /// <summary>
        /// 發牌
        /// </summary>
        public List<List<string>> DrawCard()
        {
            List<string> a = new List<string>();
            List<string> b = new List<string>();
            List<string> c = new List<string>();

            Random ran = new Random();

            //剩3張底牌
            for (int i = 0; i < 51; i++)
            {
                //隨機抽取一張牌
                string item = Cards[ran.Next(Cards.Count)];

                switch (i % 3)
                {
                    case 0:
                        a.Add(item);
                        break;
                    case 1:
                        b.Add(item);
                        break;
                    case 2:
                        c.Add(item);
                        break;
                }

                Cards.Remove(item);
            }

            return new List<List<string>>()
            {
                a,b,c,Cards
            };
        }

        /// <summary>
        /// 規則
        /// </summary>
        /// <param name="existingCard"></param>
        /// <param name="newCard"></param>
        /// <param name="isSelf"></param>
        /// <returns></returns>
        public bool Rule(List<string> existingCard, List<string> newCard, bool isSelf)
        {
            //現有牌號
            List<int> existingCardNo = existingCard.Select(x => Convert.ToInt32(x.Split('-')[1])).ToList().OrderBy(x => x).ToList();

            //新出牌號
            List<int> newCardNo = newCard.Select(x => Convert.ToInt32(x.Split('-')[1])).ToList().OrderBy(x => x).ToList();

            //上一手是王炸，禁止其他人出牌
            if (existingCardNo.All(x => x > 50) && existingCardNo.Count == 2)
            {
                if (isSelf)
                    return true;
                else
                    return false;
            }

            //王炸最大
            if (newCardNo.All(x => x > 50) && newCard.Count == 2)
                return true;

            //單張
            if (newCardNo.Count == 1)
            {
                if (existingCardNo.Count == 0)
                    return true;

                if ((existingCardNo.Count == 1 && newCardNo[0] > existingCardNo[0]) || isSelf)
                    return true;
            }

            //對子/三隻
            if (newCardNo.Count == 2 || newCardNo.Count == 3)
            {
                if (existingCardNo.Count == 0 && newCardNo.All(x => x == newCardNo[0]))
                    return true;

                if (newCardNo.All(x => x == newCardNo[0]) && (isSelf || newCardNo.Count == existingCardNo.Count && newCardNo[0] > existingCardNo[0]))
                    return true;
            }

            if (newCard.Count == 4)
            {
                //炸
                if (newCardNo.All(x => x == newCardNo[0]))
                {
                    if (existingCardNo.Count == 0 || isSelf)
                        return true;

                    if (existingCardNo.All(x => x == existingCardNo[0]) && existingCardNo.Count == 4)
                    {
                        if (newCardNo[0] > existingCardNo[0])
                            return true;
                    }

                    return true;
                }

                //三帶一
                {
                    List<int> flagA = newCardNo.Distinct().ToList();

                    //超過2種牌直接失敗
                    if (flagA.Count > 2)
                        return false;

                    //沒有上一手牌，或者上一手是自己出的牌
                    if (existingCardNo.Count == 0 || isSelf)
                        return true;

                    int newCardFlag = 0;

                    if (newCardNo.Where(x => x == flagA[0]).ToList().Count() > 1)
                    {
                        newCardFlag = flagA[0];
                    }
                    else
                        newCardFlag = flagA[1];

                    List<int> flagB = existingCardNo.Distinct().ToList();

                    //上一手牌不是三帶一
                    if (flagB.Count > 2)
                        return false;

                    int existingCardFlag = 0;

                    if (existingCardNo.Where(x => x == flagB[0]).ToList().Count() > 1)
                    {
                        existingCardFlag = flagB[0];
                    }
                    else
                        existingCardFlag = flagB[1];

                    if (newCardFlag > existingCardFlag)
                        return true;
                }
            }

            if (newCard.Count >= 5)
            {
                bool flag = true;

                for (int i = 0; i < newCardNo.Count - 1; i++)
                {
                    if (newCardNo[i] + 1 != newCardNo[i + 1])
                    {
                        flag = false;
                        break;
                    }
                }

                //順子
                if (flag)
                {
                    if (existingCardNo.Count == 0 || (newCardNo[0] > existingCardNo[0] && newCardNo.Count == existingCardNo.Count) || isSelf)
                        return true;
                }
            }

            return false;
        }
    }

單張規則和普通鬥D主一樣（除瞭王以外2最大，其次是A），多張規則目前支持：王炸、對子、三隻、順子、三帶一。目前隻做到這裡，各位同學可以拿回去自行擴展。

上一些運行圖。房主建房並加入：

新玩傢加入：

房間人滿以後房主開始遊戲，隨機分配地主：

出牌特效：

遊戲結算：

最後附上開源地址（客戶端在web分支）：https://gitee.com/muchengqingxin/card-game

tips：前端同學在沒有UI配合的情況下做到現在這樣，必須給個贊。最後提醒大傢，不要拿去商用。

以上所述是小編給大傢介紹的.Net Core使用SignalR實現鬥地主遊戲，希望對大傢有所幫助。在此也非常感謝大傢對WalkonNet網站的支持！

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