refactor 5:

- MapData.cs 现在会携带战斗初始上下文：
    - InitialCoin
    - 建塔 TowerStatsData 快照
    - TryConsumeCoin / AddCoin 运行时回调
- CombatLoadingState.cs 负责从 CombatInRunResourceManager 读取 coin 和 build stats 快照，组装 MapData 后再交给加载链。
- CombatLoadSession.cs 改成接收外部构造好的 MapData，不再自己只塞一个 LevelId。
- CombatScheduler.cs 不再在 Start() 里直接发起地图加载，加载细节回到 CombatLoadingState。
- MapEntity.cs 已经不再直接读 GameEntry.CombatNode 的 coin / build count / build stats，也不再通过它做 coin 读写：
    - 初始 coin 和 build stats 从 MapData 读取
    - 后续 coin 通过 CombatCoinChangedEventArgs 同步
    - 建塔/升级/拆塔时的 coin 变更通过 MapData 注入回调执行

Assets/GameMain/Scripts/CustomComponent/CombatNode/CombatScheduler/CombatLoadSession.cs

@@ -45,7 +45,7 @@ namespace GeometryTD.CustomComponent
             _currentMap = null;
         }
 
-        public bool StartLoading(DRLevel level, out string errorMessage)
+        public bool StartLoading(DRLevel level, MapData mapData, out string errorMessage)
         {
             errorMessage = null;
             if (_entity == null)
@@ -54,7 +54,7 @@ namespace GeometryTD.CustomComponent
                 return false;
             }
 
-            if (!TryShowMap(level, out errorMessage))
+            if (!TryShowMap(level, mapData, out errorMessage))
             {
                 return false;
             }
@@ -224,7 +224,7 @@ namespace GeometryTD.CustomComponent
             }
         }
 
-        private bool TryShowMap(DRLevel level, out string errorMessage)
+        private bool TryShowMap(DRLevel level, MapData mapData, out string errorMessage)
         {
             errorMessage = null;
             if (level == null)
@@ -242,7 +242,10 @@ namespace GeometryTD.CustomComponent
             }
 
             _loadingMapEntityId = _entity.GenerateSerialId();
-            _entity.ShowMap(new MapData(_loadingMapEntityId, level.Id, Vector3.zero), mapAssetName);
+            MapData resolvedMapData = mapData != null
+                ? mapData.CloneForEntity(_loadingMapEntityId, Vector3.zero)
+                : new MapData(_loadingMapEntityId, level.Id, Vector3.zero);
+            _entity.ShowMap(resolvedMapData, mapAssetName);
             return true;
         }
 

Assets/GameMain/Scripts/CustomComponent/CombatNode/CombatScheduler/CombatScheduler.cs

@@ -120,11 +120,6 @@ namespace GeometryTD.CustomComponent
                 return HandleStartFailure($"CombatScheduler start failed. Level '{level.Id}' has no phase data.");
             }
 
-            if (!_loadSession.StartLoading(level, out string loadError))
-            {
-                return HandleStartFailure($"CombatScheduler start failed. {loadError}");
-            }
-
             ChangeState(new CombatLoadingState(this));
             Log.Info(
                 "CombatScheduler started. Level={0}, PhaseCount={1}.",

Assets/GameMain/Scripts/CustomComponent/CombatNode/CombatStates/CombatLoadingState.cs

@@ -1,3 +1,8 @@
+using System.Collections.Generic;
+using GeometryTD.Definition;
+using GeometryTD.Entity.EntityData;
+using UnityEngine;
+
 namespace GeometryTD.CustomComponent
 {
     public partial class CombatScheduler
@@ -8,6 +13,21 @@ namespace GeometryTD.CustomComponent
             {
             }
 
+            public override void OnEnter()
+            {
+                if (Scheduler._currentLevel == null)
+                {
+                    Scheduler.EnterFailureFallback("Combat loading failed. Current level is null.");
+                    return;
+                }
+
+                MapData mapData = BuildMapData();
+                if (!Scheduler._loadSession.StartLoading(Scheduler._currentLevel, mapData, out string errorMessage))
+                {
+                    Scheduler.EnterFailureFallback($"Combat loading failed. {errorMessage}");
+                }
+            }
+
             public override void OnUpdate(float elapseSeconds, float realElapseSeconds)
             {
                 _ = elapseSeconds;
@@ -20,6 +40,29 @@ namespace GeometryTD.CustomComponent
 
                 Scheduler.TryBeginNextPhase();
             }
+
+            private MapData BuildMapData()
+            {
+                List<TowerStatsData> buildTowerStatsSnapshot = new();
+                for (int i = 0; i < Scheduler._combatInRunResourceManager.CurrentBuildTowerCount; i++)
+                {
+                    if (Scheduler._combatInRunResourceManager.TryGetBuildTowerStats(i, out TowerStatsData stats) &&
+                        stats != null)
+                    {
+                        buildTowerStatsSnapshot.Add(stats);
+                    }
+                }
+
+                return new MapData(
+                    entityId: 0,
+                    typeId: 0,
+                    levelId: Scheduler._currentLevel.Id,
+                    position: Vector3.zero,
+                    initialCoin: Scheduler._combatInRunResourceManager.CurrentCoin,
+                    buildTowerStatsSnapshot: buildTowerStatsSnapshot,
+                    tryConsumeCoin: Scheduler.TryConsumeCoin,
+                    addCoin: Scheduler.AddCoin);
+            }
         }
     }
 }

Assets/GameMain/Scripts/Entity/EntityData/MapData.cs

@@ -1,4 +1,7 @@
 using System;
+using System.Collections.Generic;
+using GeometryTD.Definition;
+using GeometryTD.CustomUtility;
 using UnityEngine;
 
 namespace GeometryTD.Entity.EntityData
@@ -7,6 +10,11 @@ namespace GeometryTD.Entity.EntityData
     public class MapData : EntityDataBase
     {
         [SerializeField] private int _levelId = 0;
+        [SerializeField] private int _initialCoin = 0;
+        [SerializeField] private TowerStatsData[] _buildTowerStatsSnapshot = Array.Empty<TowerStatsData>();
+
+        [NonSerialized] private Func<int, bool> _tryConsumeCoin;
+        [NonSerialized] private Action<int> _addCoin;
 
         public MapData(int entityId, int levelId, Vector3 position) : this(entityId, 0, levelId, position)
         {
@@ -18,10 +26,110 @@ namespace GeometryTD.Entity.EntityData
             Position = position;
         }
 
+        public MapData(
+            int entityId,
+            int typeId,
+            int levelId,
+            Vector3 position,
+            int initialCoin,
+            IReadOnlyList<TowerStatsData> buildTowerStatsSnapshot,
+            Func<int, bool> tryConsumeCoin,
+            Action<int> addCoin) : base(entityId, typeId)
+        {
+            _levelId = levelId;
+            Position = position;
+            _initialCoin = Mathf.Max(0, initialCoin);
+            SetBuildTowerStatsSnapshot(buildTowerStatsSnapshot);
+            _tryConsumeCoin = tryConsumeCoin;
+            _addCoin = addCoin;
+        }
+
         public int LevelId
         {
             get => _levelId;
             set => _levelId = value;
         }
+
+        public int InitialCoin
+        {
+            get => _initialCoin;
+            set => _initialCoin = Mathf.Max(0, value);
+        }
+
+        public int CurrentBuildTowerCount => _buildTowerStatsSnapshot != null ? _buildTowerStatsSnapshot.Length : 0;
+
+        public void BindCombatCallbacks(Func<int, bool> tryConsumeCoin, Action<int> addCoin)
+        {
+            _tryConsumeCoin = tryConsumeCoin;
+            _addCoin = addCoin;
+        }
+
+        public bool TryConsumeCoin(int coin)
+        {
+            int requiredCoin = Mathf.Max(0, coin);
+            if (requiredCoin <= 0)
+            {
+                return true;
+            }
+
+            return _tryConsumeCoin != null && _tryConsumeCoin.Invoke(requiredCoin);
+        }
+
+        public void AddCoin(int coin)
+        {
+            int amount = Mathf.Max(0, coin);
+            if (amount <= 0)
+            {
+                return;
+            }
+
+            _addCoin?.Invoke(amount);
+        }
+
+        public bool TryGetBuildTowerStats(int buildIndex, out TowerStatsData stats)
+        {
+            stats = null;
+            if (_buildTowerStatsSnapshot == null || buildIndex < 0 || buildIndex >= _buildTowerStatsSnapshot.Length)
+            {
+                return false;
+            }
+
+            TowerStatsData sourceStats = _buildTowerStatsSnapshot[buildIndex];
+            if (sourceStats == null)
+            {
+                return false;
+            }
+
+            stats = InventoryCloneUtility.CloneTowerStats(sourceStats);
+            return stats != null;
+        }
+
+        public void SetBuildTowerStatsSnapshot(IReadOnlyList<TowerStatsData> buildTowerStatsSnapshot)
+        {
+            if (buildTowerStatsSnapshot == null || buildTowerStatsSnapshot.Count <= 0)
+            {
+                _buildTowerStatsSnapshot = Array.Empty<TowerStatsData>();
+                return;
+            }
+
+            _buildTowerStatsSnapshot = new TowerStatsData[buildTowerStatsSnapshot.Count];
+            for (int i = 0; i < buildTowerStatsSnapshot.Count; i++)
+            {
+                _buildTowerStatsSnapshot[i] = InventoryCloneUtility.CloneTowerStats(buildTowerStatsSnapshot[i]);
+            }
+        }
+
+        public MapData CloneForEntity(int entityId, Vector3 position)
+        {
+            return new MapData(
+                entityId,
+                TypeId,
+                _levelId,
+                position,
+                _initialCoin,
+                _buildTowerStatsSnapshot,
+                _tryConsumeCoin,
+                _addCoin);
+        }
     }
 }

Assets/GameMain/Scripts/Entity/EntityLogic/MapEntity.cs

@@ -1,6 +1,8 @@
 using System;
 using System.Collections.Generic;
 using GeometryTD.CustomComponent;
+using GeometryTD.CustomEvent;
+using GameFramework.Event;
 using GeometryTD.Map;
 using GeometryTD.Definition;
 using GeometryTD.Entity.EntityData;
@@ -37,6 +39,8 @@ namespace GeometryTD.Entity
         private TowerSelectionPresenter _towerSelectionPresenter;
         
         private CombatSelectUseCaseConfigurator _combatSelectUseCaseConfigurator;
+        private int _currentCoin;
+        private bool _isCoinEventSubscribed;
 
         public IReadOnlyList<Vector3Int> PathCells => _mapTopologyService != null
             ? _mapTopologyService.PathCells
@@ -117,6 +121,11 @@ namespace GeometryTD.Entity
             {
                 Log.Warning("MapData is invalid for map entity '{0}'.", Id);
             }
+            else
+            {
+                _currentCoin = Mathf.Max(0, _mapData.InitialCoin);
+                SubscribeCombatEvents();
+            }
 
             RefreshTiles();
             ConfigureCombatSelectUseCase();
@@ -125,6 +134,7 @@ namespace GeometryTD.Entity
 
         protected override void OnHide(bool isShutdown, object userData)
         {
+            UnsubscribeCombatEvents();
             HideCombatSelectForm();
             _towerPlacementService?.HideAndClearAllPlacedTowers();
             ClearSelectionState();
@@ -301,8 +311,7 @@ namespace GeometryTD.Entity
                 return false;
             }
 
-            CombatNodeComponent combatNode = GameEntry.CombatNode;
-            if (combatNode == null || !combatNode.TryGetBuildTowerStats(buildIndex, out TowerStatsData buildTowerStats))
+            if (_mapData == null || !_mapData.TryGetBuildTowerStats(buildIndex, out TowerStatsData buildTowerStats))
             {
                 return false;
             }
@@ -376,17 +385,49 @@ namespace GeometryTD.Entity
             GameEntry.UIRouter.CloseUI(UIFormType.CombatSelectForm);
         }
 
-        private static int GetCurrentBuildTowerCount()
+        private void SubscribeCombatEvents()
         {
-            if (GameEntry.CombatNode == null)
+            if (_isCoinEventSubscribed)
+            {
+                return;
+            }
+
+            GameEntry.Event.Subscribe(CombatCoinChangedEventArgs.EventId, OnCombatCoinChanged);
+            _isCoinEventSubscribed = true;
+        }
+
+        private void UnsubscribeCombatEvents()
+        {
+            if (!_isCoinEventSubscribed)
+            {
+                return;
+            }
+
+            GameEntry.Event.Unsubscribe(CombatCoinChangedEventArgs.EventId, OnCombatCoinChanged);
+            _isCoinEventSubscribed = false;
+        }
+
+        private void OnCombatCoinChanged(object sender, GameEventArgs e)
+        {
+            if (e is not CombatCoinChangedEventArgs args)
+            {
+                return;
+            }
+
+            _currentCoin = Mathf.Max(0, args.CurrentCoin);
+        }
+
+        private int GetCurrentBuildTowerCount()
+        {
+            if (_mapData == null)
             {
                 return 0;
             }
 
-            return Mathf.Clamp(GameEntry.CombatNode.CurrentBuildTowerCount, 0, 4);
+            return Mathf.Clamp(_mapData.CurrentBuildTowerCount, 0, 4);
         }
 
-        private static bool TryConsumeCoin(int cost)
+        private bool TryConsumeCoin(int cost)
         {
             int requiredCoin = Mathf.Max(0, cost);
             if (requiredCoin <= 0)
@@ -394,27 +435,28 @@ namespace GeometryTD.Entity
                 return true;
             }
 
-            if (GameEntry.CombatNode == null)
+            if (_mapData == null)
             {
                 return false;
             }
 
-            return GameEntry.CombatNode.TryConsumeCoin(requiredCoin);
+            return _mapData.TryConsumeCoin(requiredCoin);
         }
 
-        private static int GetCurrentCoin()
+        private int GetCurrentCoin()
         {
-            return GameEntry.CombatNode != null ? Mathf.Max(0, GameEntry.CombatNode.CurrentCoin) : 0;
+            return Mathf.Max(0, _currentCoin);
         }
 
-        private static void AddCoin(int coin)
+        private void AddCoin(int coin)
         {
             int amount = Mathf.Max(0, coin);
             if (amount <= 0)
             {
                 return;
             }
-            GameEntry.CombatNode?.AddCoin(amount);
+
+            _mapData?.AddCoin(amount);
         }
     }
 }