diff --git a/engine/3rdparty/zlib/include/refl/detail/convert.inl b/engine/3rdparty/zlib/include/refl/detail/convert.inl
index d2269df..c7da5c0 100644
--- a/engine/3rdparty/zlib/include/refl/detail/convert.inl
+++ b/engine/3rdparty/zlib/include/refl/detail/convert.inl
@@ -13,8 +13,8 @@ namespace refl {
 	inline bool Convert::Construct(Any& dst, const Any& src)
 	{
 		if (dst.Check(src.cls)) {
-			dst.cls->InitObject((void*)dst.ptr);
-			dst.cls->CopyObject((void*)dst.ptr, src.ptr);
+			dst.cls->parent->InitObject((void*)dst.ptr);
+			dst.cls->parent->CopyObject((void*)dst.ptr, src.ptr);
 			return true;
 		}
 		auto it = ClassMap.find(dst.cls);
diff --git a/engine/3rdparty/zlib/include/refl/detail/field.inl b/engine/3rdparty/zlib/include/refl/detail/field.inl
index 5941854..25b31e4 100644
--- a/engine/3rdparty/zlib/include/refl/detail/field.inl
+++ b/engine/3rdparty/zlib/include/refl/detail/field.inl
@@ -1,3 +1,4 @@
+#pragma once
 #include "uclass.h"
 namespace refl {
 	template<typename Func, typename... Args>
diff --git a/engine/3rdparty/zlib/include/refl/detail/meta.h b/engine/3rdparty/zlib/include/refl/detail/meta.h
index 3e19ee7..4235a4c 100644
--- a/engine/3rdparty/zlib/include/refl/detail/meta.h
+++ b/engine/3rdparty/zlib/include/refl/detail/meta.h
@@ -18,6 +18,9 @@ namespace refl {
 		for (auto& field : fields) {
 			size += field.data.member.offset;
 		}
+		if (size == 0) {
+			size = 1;
+		}
 		return size;
 	}
 	enum MetaFlag :uint32_t {
diff --git a/engine/3rdparty/zlib/include/refl/macro.h b/engine/3rdparty/zlib/include/refl/macro.h
index 3bfa402..c4909f4 100644
--- a/engine/3rdparty/zlib/include/refl/macro.h
+++ b/engine/3rdparty/zlib/include/refl/macro.h
@@ -1,3 +1,4 @@
+#pragma once
 #if !defined(__cppast)
 #define __cppast(...)
 #endif
\ No newline at end of file
diff --git a/engine/3rdparty/zlib/test/refl/vertex.h b/engine/3rdparty/zlib/test/refl/vertex.h
index e2dacf5..81fe330 100644
--- a/engine/3rdparty/zlib/test/refl/vertex.h
+++ b/engine/3rdparty/zlib/test/refl/vertex.h
@@ -12,14 +12,14 @@ struct vec3_parent {
 struct vec4 {
 	string name{ "hello" };
 };
-struct vec3_Meta;
+class vec3_Meta;
 struct vec3 : public vec3_parent {
 	using MyMeta = vec3_Meta;
-	__cppast(Meta = { 0.f})
+	__cppast(Meta = { 1.f})
 	float x = 1;
-	__cppast(Meta = { 0.f})
+	__cppast(Meta = { 2.f})
 	float y = 2;
-	__cppast(Meta = { 0.f})
+	__cppast(Meta = { 5.f})
 	float z = 3;
 	__cppast(Meta = { "hello meta"})
 	string name = "???";
@@ -50,5 +50,4 @@ struct vec3 : public vec3_parent {
 		cout << x1 << "::norm3" << endl;
 	}
 };
-
 #include "meta_vertex_gen.inl"
\ No newline at end of file