结构大修改，改成朴实无华的结构，不过度架构。能跑就行

Assets/Scripts/Fishing2~/Map/Handler.meta

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+fileFormatVersion: 2
+guid: 9720afaa3bc94081b63a7c0571e4c86a
+timeCreated: 1757251153

Assets/Scripts/Fishing2~/Map/Handler/Map2C_ChangeMapHandler.cs

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+using Fantasy;
+using Fantasy.Async;
+using Fantasy.Network;
+using Fantasy.Network.Interface;
+using NBF.Fishing2;
+using Log = NBC.Log;
+
+namespace NBF.Fishing2
+{
+    public class Map2C_ChangeMapHandler : Message<Map2C_ChangeMap>
+    {
+        protected override async FTask Run(Session session, Map2C_ChangeMap message)
+        {
+            Log.Info($"收到地图切换消息=={message.MapId}");
+            // await MapHelper.ChangeMap(message.MapId);
+            
+            // await MapHelper.CreateRoomTest(message.MapId);
+        }
+    }
+}

Assets/Scripts/Fishing2~/Map/Handler/Map2C_ChangeMapHandler.cs.meta

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+fileFormatVersion: 2
+guid: 9aca13592484450582e818dd128a23c2
+timeCreated: 1756301493

Assets/Scripts/Fishing2~/Map/Handler/Map2C_RoleEnterMapNotifyHandler.cs

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+using Fantasy;
+using Fantasy.Async;
+using Fantasy.Network;
+using Fantasy.Network.Interface;
+using NBC;
+using Log = NBC.Log;
+
+namespace NBF.Fishing2
+{
+    public class Map2C_RoleEnterMapNotifyHandler : Message<Map2C_RoleEnterRoomNotify>
+    {
+        protected override async FTask Run(Session session, Map2C_RoleEnterRoomNotify message)
+        {
+            Log.Info($"收到进入房间推送 id={message.Info.Id} ");
+            var map = App.Main.GetComponent<Map>();
+            if (map == null || !map.IsRoomMap)
+            {
+                Log.Info("房间不是好友房间，不处理进入请求");
+                return;
+            }
+
+            var info = message.Info;
+            var unit = map.GetUnit(info.Id);
+            if (unit == null)
+            {
+                unit = map.CreateMapUnit(info);
+            }
+
+            await unit.CreateView();
+        }
+    }
+}

Assets/Scripts/Fishing2~/Map/Handler/Map2C_RoleEnterMapNotifyHandler.cs.meta

@@ -0,0 +1,3 @@
+fileFormatVersion: 2
+guid: b0934eeab5b8445b824f1337f774379e
+timeCreated: 1757251141

Assets/Scripts/Fishing2~/Map/Handler/Map2C_RoleExitMapNotifyHandler.cs

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+using Fantasy;
+using Fantasy.Async;
+using Fantasy.Network;
+using Fantasy.Network.Interface;
+using NBC;
+using Log = NBC.Log;
+
+namespace NBF.Fishing2
+{
+    public class Map2C_RoleExitMapNotifyHandler : Message<Map2C_RoleExitRoomNotify>
+    {
+        protected override async FTask Run(Session session, Map2C_RoleExitRoomNotify message)
+        {
+            Log.Info($"收到离开房间推送 id={message.Id} ");
+            var map = App.Main.GetComponent<Map>();
+            if (map == null)
+            {
+                Log.Info("地图不存在，不处理退出请求");
+                return;
+            }
+            if (map.Units.Remove(message.Id, out var unit))
+            {
+                unit.Dispose();
+            }
+        }
+    }
+}

Assets/Scripts/Fishing2~/Map/Handler/Map2C_RoleExitMapNotifyHandler.cs.meta

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+fileFormatVersion: 2
+guid: 18ae467167c44db1873fee88067d2f9a
+timeCreated: 1757251193

Assets/Scripts/Fishing2~/Map/Map.cs

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+using System;
+using System.Collections.Generic;
+using Fantasy;
+using NBC;
+using Fantasy.Entitas;
+using Fantasy.Entitas.Interface;
+
+namespace NBF.Fishing2
+{
+    public class Map : Entity
+    {
+        public int MapId;
+
+        public string RoomCode;
+
+        /// <summary>
+        /// 自己的实体id
+        /// </summary>
+        public long SelfId;
+
+        /// <summary>
+        /// 好友房地图
+        /// </summary>
+        public bool IsRoomMap => !string.IsNullOrEmpty(RoomCode);
+
+        /// <summary>
+        /// 地图中的单位
+        /// </summary>
+        public Dictionary<long, MapUnit> Units = new Dictionary<long, MapUnit>();
+
+        /// <summary>
+        /// 自己的实体
+        /// </summary>
+        public MapUnit SelfMapUnit => GetUnit(SelfId);
+
+
+        #region System
+
+        public class MapDestroySystem : DestroySystem<Map>
+        {
+            protected override void Destroy(Map self)
+            {
+                self.MapId = 0;
+                self.SelfId = 0;
+                self.RoomCode = string.Empty;
+                self.Units.Clear();
+            }
+        }
+
+        #endregion
+
+        public MapUnit CreateMapUnit(MapUnitInfo unitInfo)
+        {
+            var mapUnit = Create<MapUnit>(Scene, unitInfo.Id, true, true);
+            mapUnit.SetUnitInfo(unitInfo);
+            Add(mapUnit);
+            return mapUnit;
+        }
+
+        /// <summary>
+        /// 获取一个单位
+        /// </summary>
+        /// <param name="self"></param>
+        /// <param name="id"></param>
+        /// <returns></returns>
+        public MapUnit GetUnit(long id)
+        {
+            return Units.GetValueOrDefault(id);
+        }
+
+        /// <summary>
+        /// 进入地图
+        /// </summary>
+        /// <param name="map"></param>
+        /// <param name="unit"></param>
+        /// <returns></returns>
+        public bool Add(MapUnit unit)
+        {
+            Units.Add(unit.Id, unit);
+            return true;
+        }
+
+        /// <summary>
+        /// 离开地图
+        /// </summary>
+        /// <param name="self"></param>
+        /// <param name="id"></param>
+        /// <returns></returns>
+        public bool Remove(long id)
+        {
+            return Units.Remove(id);
+        }
+    }
+}

Assets/Scripts/Fishing2~/Map/Map.cs.meta

@@ -0,0 +1,3 @@
+fileFormatVersion: 2
+guid: 2acb8a2309ee4443a812939b0e02c18f
+timeCreated: 1756049289

Assets/Scripts/Fishing2~/Map/MapManageComponent.cs

@@ -0,0 +1,11 @@
+using Fantasy.Entitas;
+
+namespace NBF.Fishing2
+{
+    /// <summary>
+    /// 地图管理组件
+    /// </summary>
+    public class MapManageComponent : Entity
+    {
+    }
+}

Assets/Scripts/Fishing2~/Map/MapManageComponent.cs.meta

@@ -0,0 +1,3 @@
+fileFormatVersion: 2
+guid: 226c840e80f840ae8a4ff54bc7c6645a
+timeCreated: 1756304063