diff --git a/src/DivaGL/object.cpp b/src/DivaGL/object.cpp
index 7fcf844..3620768 100644
--- a/src/DivaGL/object.cpp
+++ b/src/DivaGL/object.cpp
@@ -22,7 +22,7 @@ struct ObjsetInfo {
     bool obj_loaded;
     p_file_handler tex_file_handler;
     bool tex_loaded;
-    shared_ptr_prj__stack_allocator alloc_handler;
+    prj::shared_ptr<void*> alloc_handler; // prj::stack_allocator
     obj_set* obj_set;
     prj::vector<std::pair<uint32_t, int32_t>> obj_id_data;
     bool field_50;
diff --git a/src/DivaGL/sprite.hpp b/src/DivaGL/sprite.hpp
index f15b7df..49b6f6f 100644
--- a/src/DivaGL/sprite.hpp
+++ b/src/DivaGL/sprite.hpp
@@ -76,7 +76,7 @@ struct SprSet {
     int32_t load_count;
     void* file_handler;
     bool ready;
-    shared_ptr_prj__stack_allocator alloc_handler;
+    prj::shared_ptr<void*> alloc_handler; // prj::stack_allocator
     prj::string file;
 };
 
diff --git a/src/DivaGL/types.hpp b/src/DivaGL/types.hpp
index 296fa97..2c6b201 100644
--- a/src/DivaGL/types.hpp
+++ b/src/DivaGL/types.hpp
@@ -75,9 +75,40 @@ namespace prj {
 
     template<typename T, typename U>
     using map = std::map<T, U, std::less<T>, Allocator<pair<T, U>>>;
-}
 
-struct shared_ptr_prj__stack_allocator {
-    void* ptr;
-    void* ref;
-};
+    template<typename T>
+    class ref_count {
+    private:
+        int32_t uses;
+        int32_t weaks;
+        T* ptr;
+        void(*delete_this_func)(ref_count* ref);
+        void(*destroy_func)(ref_count* ref, T* ptr);
+    };
+
+    template<class T>
+    class shared_ptr;
+
+    template<class T>
+    class ptr_base {
+    private:
+        T* ptr;
+        ref_count<T>* ref;
+
+        template<class U>
+        friend class ptr_base;
+    };
+
+    template<class T>
+    class shared_ptr : public ptr_base<T> {
+    public:
+    };
+
+    template<typename T, typename U>
+    struct sorted_vector {
+        vector<pair<T, U>> field_0;
+        size_t field_18;
+        vector<pair<T, U>> field_20;
+        bool field_38;
+    };
+}