added IDObject

inc/hgl/type/_Object.h

@@ -41,4 +41,30 @@ namespace hgl
 
     //此代码取自AngelScript，感谢
     #define GetMemberFuncPointer(c,m) MethodPtr<sizeof(void (c::*)())>::Convert((void (c::*)())(&c::m))
+
+    /**
+    * 取得一个类型的哈希值
+    */
+    template<typename T> inline constexpr const size_t GetTypeHash()
+    {
+        return typeid(T).hash_code();
+    }
+
+    class IDObject :public _Object
+    {
+    private:
+
+        size_t object_type_hash;               ///<最终类的类型哈希值
+
+    public:
+
+        IDObject(const size_t &oth)
+        {
+            object_type_hash=oth;
+        }
+
+        virtual ~IDObject()=default;
+
+        const size_t GetObjectTypeHash()const { return object_type_hash; }
+    };//class IDObject
 }//namespace hgl