feat(地图系统): 实现角色移动约束和地图切换功能

添加地图移动区域检测和角色移动约束逻辑
引入地图切换请求队列机制，支持延迟处理角色传送
在CharacterObject中实现地图边界检测和位置约束应用

Game/include/character/CharacterObject.h

@@ -15,6 +15,8 @@
 
 namespace frostbite2D {
 
+class GameMap;
+
 /// @brief 角色系统的主聚合对象。
 ///
 /// 这个类可以理解为“角色外壳”：
@@ -170,6 +172,9 @@ private:
   void CommitPendingActionContext(const std::string& defaultRequestedActionId,
                                   const std::string& defaultSourceActionId,
                                   CharacterStateId defaultSourceStateId);
+  GameMap* FindOwningMap() const;
+  void ApplyMapMovementConstraints(const CharacterWorldPosition& previousPosition);
+  void QueueMapTransitionIfNeeded();
   void SyncActorPositionFromWorld();
   bool SetActionStrict(const std::string& actionName,
                        const char* phase,

Game/include/map/GameMap.h

@@ -44,6 +44,7 @@ public:
   Vec3 CheckIsItMovable(const Vec3& curPos, const Vec3& posOffset) const;
   /// 检查当前位置是否进入 town move area，用于切图/传送判定。
   MapMoveArea CheckIsItMoveArea(const Vec3& curPos) const;
+  bool TryGetMoveAreaTarget(const Vec3& curPos, MapMoveArea& outTarget) const;
   const std::vector<MapMoveArea>& GetMoveAreaInfo() const;
   Rect GetMovablePositionArea(size_t index) const;
 

Game/include/world/GameWorld.h

@@ -3,6 +3,7 @@
 #include "world/GameTown.h"
 #include <frostbite2D/scene/scene.h>
 #include <map>
+#include <optional>
 
 namespace frostbite2D {
 
@@ -13,18 +14,28 @@ public:
 
   void onEnter() override;
   void onExit() override;
+  void Update(float deltaTime) override;
 
   void AddCharacter(RefPtr<Actor> actor, int townId);
   void MoveCharacter(RefPtr<Actor> actor, int townId, int area);
+  void RequestMoveCharacter(RefPtr<Actor> actor, int townId, int area);
 
   static GameWorld* GetWorld();
 
 private:
+  struct PendingCharacterMove {
+    RefPtr<Actor> actor;
+    int townId = -1;
+    int area = -1;
+  };
+
   bool InitWorld();
+  void ProcessPendingCharacterMove();
 
   std::map<int, std::string> townPathMap_;
   std::map<int, RefPtr<GameTown>> townMap_;
   RefPtr<Actor> mainActor_;
+  std::optional<PendingCharacterMove> pendingCharacterMove_;
   int curTown_ = -1;
   bool initialized_ = false;
 };