仓库组件 + 防御塔升级

- `PlayerInventoryComponent`：玩家库存组件，收集金币/组件/防御塔等道具
- 补全防御塔的升级逻辑，最高 5 级

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

@@ -8,13 +8,16 @@ namespace GeometryTD.Entity.EntityData
     public class DefenseTowerData : EntityDataBase
     {
         [SerializeField] private DefenseTowerStatsData _stats = new DefenseTowerStatsData();
+        [SerializeField] private int _towerLevel = 0;
 
-        public DefenseTowerData(int entityId, int typeId, Vector3 position, Quaternion rotation, DefenseTowerStatsData stats)
+        public DefenseTowerData(int entityId, int typeId, Vector3 position, Quaternion rotation,
+            DefenseTowerStatsData stats, int towerLevel = 0)
             : base(entityId, typeId)
         {
             Position = position;
             Rotation = rotation;
             _stats = stats ?? new DefenseTowerStatsData();
+            _towerLevel = Mathf.Max(0, towerLevel);
         }
 
         public DefenseTowerStatsData Stats
@@ -22,5 +25,11 @@ namespace GeometryTD.Entity.EntityData
             get => _stats;
             set => _stats = value ?? new DefenseTowerStatsData();
         }
+
+        public int TowerLevel
+        {
+            get => _towerLevel;
+            set => _towerLevel = Mathf.Max(0, value);
+        }
     }
 }

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

@@ -8,9 +8,15 @@ namespace GeometryTD.Entity
 {
     public sealed class CombatSelectInputService
     {
-        public bool TryBuildUserData(Tilemap tilemap, Transform mapTransform,
-            IReadOnlyDictionary<Vector3Int, int> towerEntityIdByFoundationCell, Func<Vector3Int, bool> isFoundationCell,
-            int upgradeCost, int destroyGain, out CombatSelectFormUserData userData)
+        public bool TryBuildUserData(
+            Tilemap tilemap,
+            Transform mapTransform,
+            IReadOnlyDictionary<Vector3Int, int> towerEntityIdByFoundationCell,
+            Func<Vector3Int, bool> isFoundationCell,
+            Func<int, bool> isTowerAtMaxLevel,
+            int upgradeCost,
+            int destroyGain,
+            out CombatSelectFormUserData userData)
         {
             userData = null;
             if (tilemap == null || !TryGetPointerWorldPosition(tilemap, mapTransform, out Vector3 worldPosition,
@@ -44,13 +50,15 @@ namespace GeometryTD.Entity
                 WorldPosition = worldPosition,
                 CellPosition = clickedCell,
                 TowerEntityId = towerEntityId,
+                IsTowerAtMaxLevel = towerEntityId != 0 && isTowerAtMaxLevel != null && isTowerAtMaxLevel(towerEntityId),
                 UpgradeCost = Mathf.Max(0, upgradeCost),
                 DestroyGain = Mathf.Max(0, destroyGain)
             };
             return true;
         }
 
-        private static bool TryGetPointerWorldPosition(Tilemap tilemap, Transform mapTransform, out Vector3 worldPosition,
+        private static bool TryGetPointerWorldPosition(Tilemap tilemap, Transform mapTransform,
+            out Vector3 worldPosition,
             out Vector2 contentPosition)
         {
             worldPosition = Vector3.zero;
@@ -63,7 +71,9 @@ namespace GeometryTD.Entity
             }
 
             Ray ray = mainCamera.ScreenPointToRay(Input.mousePosition);
-            float mapPlaneZ = tilemap != null ? tilemap.transform.position.z : (mapTransform != null ? mapTransform.position.z : 0f);
+            float mapPlaneZ = tilemap != null
+                ? tilemap.transform.position.z
+                : (mapTransform != null ? mapTransform.position.z : 0f);
             Vector3 planeNormal = mainCamera.transform.forward.sqrMagnitude > Mathf.Epsilon
                 ? -mainCamera.transform.forward
                 : Vector3.forward;

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

@@ -1,4 +1,5 @@
 using Components;
+using GeometryTD.Definition;
 using GeometryTD.Entity.EntityData;
 using UnityGameFramework.Runtime;
 
@@ -13,6 +14,17 @@ namespace GeometryTD.Entity
             _towerController?.SetAttackRangeVisible(visible);
         }
 
+        public bool TryApplyStats(DefenseTowerStatsData stats, int towerLevel)
+        {
+            if (_towerController == null || stats == null)
+            {
+                return false;
+            }
+
+            _towerController.OnInit(stats, towerLevel);
+            return true;
+        }
+
         protected override void OnInit(object userData)
         {
             base.OnInit(userData);
@@ -41,8 +53,7 @@ namespace GeometryTD.Entity
                 return;
             }
 
-            _towerController.SetAutoUpdate(false);
-            _towerController.OnInit(towerData.Stats);
+            _towerController.OnInit(towerData.Stats, towerData.TowerLevel);
         }
 
         protected override void OnUpdate(float elapseSeconds, float realElapseSeconds)

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

@@ -242,7 +242,8 @@ namespace GeometryTD.Entity
             if (_combatSelectInputService == null ||
                 !_combatSelectInputService.TryBuildUserData(Tilemap, CachedTransform,
                     _towerPlacementService != null ? _towerPlacementService.TowerEntityIdByFoundationCell : null,
-                    IsFoundationCell, _upgradeCost, _destroyGain, out CombatSelectFormUserData userData))
+                    IsFoundationCell, IsTowerAtMaxLevel, _upgradeCost, _destroyGain,
+                    out CombatSelectFormUserData userData))
             {
                 userData = new CombatSelectFormUserData
                 {
@@ -254,6 +255,11 @@ namespace GeometryTD.Entity
             GameEntry.UIRouter.OpenUI(UIFormType.CombatSelectForm, userData);
         }
 
+        private bool IsTowerAtMaxLevel(int towerEntityId)
+        {
+            return _towerPlacementService != null && _towerPlacementService.IsTowerAtMaxLevel(towerEntityId);
+        }
+
         private void ApplySelectedObject(CombatSelectFormUserData userData)
         {
             _towerSelectionPresenter?.ApplySelectedObject(userData);