From 107640348cc60f34f8102ec450dea3fba48cd634 Mon Sep 17 00:00:00 2001
From: nlupugla <lupu.gladstein@gmail.com>
Date: Sat, 21 Sep 2024 11:38:25 -0400
Subject: [PATCH] Added Structs to core.

---
 SConstruct                             |   2 +
 core/core_bind.cpp                     |  77 +++++
 core/core_bind.h                       |   8 +
 core/object/class_db.cpp               |  73 +++++
 core/object/class_db.h                 |  10 +
 core/object/method_info.cpp            |  99 +++++++
 core/object/method_info.h              | 137 +++++++++
 core/object/object.cpp                 | 143 +++------
 core/object/object.h                   | 260 ++--------------
 core/object/property_info.cpp          |  90 ++++++
 core/object/property_info.h            | 176 +++++++++++
 core/string/ustring.cpp                |   6 +-
 core/variant/array.cpp                 | 324 ++++++++++++++++----
 core/variant/array.h                   |  28 ++
 core/variant/container_type_validate.h | 152 +++++++---
 core/variant/dictionary.cpp            | 123 ++++----
 core/variant/dictionary.h              |   1 +
 core/variant/struct.h                  | 146 +++++++++
 core/variant/struct_generator.cpp      |  65 ++++
 core/variant/struct_generator.h        | 303 +++++++++++++++++++
 core/variant/typed_array.h             |  51 +++-
 core/variant/variant.cpp               |  17 +-
 core/variant/variant.h                 |   3 +
 core/variant/variant_construct.cpp     |   1 +
 core/variant/variant_construct.h       |  87 ++++++
 core/variant/variant_setget.cpp        |  78 +++--
 scene/resources/2d/tile_set.h          |   4 +-
 tests/core/variant/test_struct.h       | 395 +++++++++++++++++++++++++
 tests/test_main.cpp                    |   1 +
 29 files changed, 2343 insertions(+), 517 deletions(-)
 create mode 100644 core/object/method_info.cpp
 create mode 100644 core/object/method_info.h
 create mode 100644 core/object/property_info.cpp
 create mode 100644 core/object/property_info.h
 create mode 100644 core/variant/struct.h
 create mode 100644 core/variant/struct_generator.cpp
 create mode 100644 core/variant/struct_generator.h
 create mode 100644 tests/core/variant/test_struct.h

diff --git a/SConstruct b/SConstruct
index 63cff4fe1672..1ac598fc0b37 100644
--- a/SConstruct
+++ b/SConstruct
@@ -856,6 +856,8 @@ if env.msvc and not methods.using_clang(env):  # MSVC
             ]
         )
 
+        env.Append(CCFLAGS=["/permissive-"])
+
     if env["werror"]:
         env.Append(CCFLAGS=["/WX"])
         env.Append(LINKFLAGS=["/WX"])
diff --git a/core/core_bind.cpp b/core/core_bind.cpp
index 891e3a28c9ed..a49d8aa44751 100644
--- a/core/core_bind.cpp
+++ b/core/core_bind.cpp
@@ -42,6 +42,7 @@
 #include "core/math/geometry_3d.h"
 #include "core/os/keyboard.h"
 #include "core/os/thread_safe.h"
+#include "core/variant/struct.h"
 #include "core/variant/typed_array.h"
 
 namespace core_bind {
@@ -1442,6 +1443,15 @@ Dictionary ClassDB::class_get_signal(const StringName &p_class, const StringName
 	}
 }
 
+//Struct<MethodInfo> ClassDB::class_get_signal_as_struct(const StringName &p_class, const StringName &p_signal) const {
+//	MethodInfo signal;
+//	if (::ClassDB::get_signal(p_class, p_signal, &signal)) {
+//		return Struct<MethodInfo>(signal);
+//	} else {
+//		return Struct<MethodInfo>();
+//	}
+//}
+
 TypedArray<Dictionary> ClassDB::class_get_signal_list(const StringName &p_class, bool p_no_inheritance) const {
 	List<MethodInfo> signals;
 	::ClassDB::get_signal_list(p_class, &signals, p_no_inheritance);
@@ -1454,6 +1464,12 @@ TypedArray<Dictionary> ClassDB::class_get_signal_list(const StringName &p_class,
 	return ret;
 }
 
+//TypedArray<Struct<MethodInfo>> ClassDB::class_get_signal_list_as_structs(const StringName &p_class, bool p_no_inheritance) const {
+//	List<MethodInfo> signals;
+//	::ClassDB::get_signal_list(p_class, &signals, p_no_inheritance);
+//	return TypedArray<Struct<MethodInfo>>(&signals);
+//}
+
 TypedArray<Dictionary> ClassDB::class_get_property_list(const StringName &p_class, bool p_no_inheritance) const {
 	List<PropertyInfo> plist;
 	::ClassDB::get_property_list(p_class, &plist, p_no_inheritance);
@@ -1465,6 +1481,12 @@ TypedArray<Dictionary> ClassDB::class_get_property_list(const StringName &p_clas
 	return ret;
 }
 
+//TypedArray<Struct<PropertyInfo>> ClassDB::class_get_property_list_as_structs(const StringName &p_class, bool p_no_inheritance) const {
+//	List<PropertyInfo> plist;
+//	::ClassDB::get_property_list(p_class, &plist, p_no_inheritance);
+//	return TypedArray<Struct<PropertyInfo>>(&plist);
+//}
+
 StringName ClassDB::class_get_property_getter(const StringName &p_class, const StringName &p_property) {
 	return ::ClassDB::get_property_getter(p_class, p_property);
 }
@@ -1525,6 +1547,12 @@ TypedArray<Dictionary> ClassDB::class_get_method_list(const StringName &p_class,
 	return ret;
 }
 
+//TypedArray<Struct<MethodInfo>> ClassDB::class_get_method_list_as_structs(const StringName &p_class, bool p_no_inheritance) const {
+//	List<MethodInfo> methods;
+//	::ClassDB::get_method_list(p_class, &methods, p_no_inheritance);
+//	return TypedArray<Struct<MethodInfo>>(&methods);
+//}
+
 Variant ClassDB::class_call_static_method(const Variant **p_arguments, int p_argcount, Callable::CallError &r_call_error) {
 	if (p_argcount < 2) {
 		r_call_error.error = Callable::CallError::CALL_ERROR_TOO_FEW_ARGUMENTS;
@@ -1609,6 +1637,47 @@ bool ClassDB::is_class_enum_bitfield(const StringName &p_class, const StringName
 	return ::ClassDB::is_enum_bitfield(p_class, p_enum, p_no_inheritance);
 }
 
+bool ClassDB::class_has_struct(const StringName &p_class, const StringName &p_struct, bool p_no_inheritance) const {
+	return ::ClassDB::get_struct_info(p_class, p_struct, p_no_inheritance) != nullptr;
+}
+
+TypedArray<Dictionary> ClassDB::class_get_struct_list(const StringName &p_class, bool p_no_inheritance) const {
+	List<StructInfo> structs;
+	TypedArray<Dictionary> ret;
+	::ClassDB::get_struct_list(p_class, &structs, p_no_inheritance);
+	for (const StructInfo &struct_info : structs) {
+		Dictionary struct_dict;
+		for (int i = 0; i < struct_info.count; i++) {
+			Dictionary member_dict;
+			member_dict[SNAME("name")] = struct_info.names[i];
+			member_dict[SNAME("type")] = struct_info.types[i];
+			member_dict[SNAME("class_name")] = struct_info.class_names[i];
+			member_dict[SNAME("default_value")] = struct_info.default_values[i];
+			struct_dict[struct_info.name] = member_dict;
+		}
+		ret.push_back(struct_dict);
+	}
+	return ret;
+}
+
+TypedArray<Dictionary> ClassDB::class_get_struct_members(const StringName &p_class, const StringName &p_struct) const {
+	// TODO: this should return an array of structs if possible without circular reference
+	TypedArray<Dictionary> ret;
+	const StructInfo *struct_info = ::ClassDB::get_struct_info(p_class, p_struct);
+	if (!struct_info) {
+		return ret; // TODO: should this be an error?
+	}
+	for (int i = 0; i < struct_info->count; i++) {
+		Dictionary dict;
+		dict[SNAME("name")] = struct_info->names[i];
+		dict[SNAME("type")] = struct_info->types[i];
+		dict[SNAME("class_name")] = struct_info->class_names[i];
+		dict[SNAME("default_value")] = struct_info->default_values[i];
+		ret.push_back(dict);
+	}
+	return ret;
+}
+
 bool ClassDB::is_class_enabled(const StringName &p_class) const {
 	return ::ClassDB::is_class_enabled(p_class);
 }
@@ -1650,9 +1719,12 @@ void ClassDB::_bind_methods() {
 
 	::ClassDB::bind_method(D_METHOD("class_has_signal", "class", "signal"), &ClassDB::class_has_signal);
 	::ClassDB::bind_method(D_METHOD("class_get_signal", "class", "signal"), &ClassDB::class_get_signal);
+	//::ClassDB::bind_method(D_METHOD("class_get_signal_as_struct", "class", "signal"), &ClassDB::class_get_signal_as_struct);
 	::ClassDB::bind_method(D_METHOD("class_get_signal_list", "class", "no_inheritance"), &ClassDB::class_get_signal_list, DEFVAL(false));
+	//::ClassDB::bind_method(D_METHOD("class_get_signal_list_as_structs", "class", "no_inheritance"), &ClassDB::class_get_signal_list_as_structs, DEFVAL(false));
 
 	::ClassDB::bind_method(D_METHOD("class_get_property_list", "class", "no_inheritance"), &ClassDB::class_get_property_list, DEFVAL(false));
+	//::ClassDB::bind_method(D_METHOD("class_get_property_list_as_structs", "class", "no_inheritance"), &ClassDB::class_get_property_list_as_structs, DEFVAL(false));
 	::ClassDB::bind_method(D_METHOD("class_get_property_getter", "class", "property"), &ClassDB::class_get_property_getter);
 	::ClassDB::bind_method(D_METHOD("class_get_property_setter", "class", "property"), &ClassDB::class_get_property_setter);
 	::ClassDB::bind_method(D_METHOD("class_get_property", "object", "property"), &ClassDB::class_get_property);
@@ -1665,6 +1737,7 @@ void ClassDB::_bind_methods() {
 	::ClassDB::bind_method(D_METHOD("class_get_method_argument_count", "class", "method", "no_inheritance"), &ClassDB::class_get_method_argument_count, DEFVAL(false));
 
 	::ClassDB::bind_method(D_METHOD("class_get_method_list", "class", "no_inheritance"), &ClassDB::class_get_method_list, DEFVAL(false));
+	//::ClassDB::bind_method(D_METHOD("class_get_method_list_as_structs", "class", "no_inheritance"), &ClassDB::class_get_method_list_as_structs, DEFVAL(false));
 
 	::ClassDB::bind_vararg_method(METHOD_FLAGS_DEFAULT, "class_call_static_method", &ClassDB::class_call_static_method, MethodInfo("class_call_static_method", PropertyInfo(Variant::STRING_NAME, "class"), PropertyInfo(Variant::STRING_NAME, "method")));
 
@@ -1680,6 +1753,10 @@ void ClassDB::_bind_methods() {
 
 	::ClassDB::bind_method(D_METHOD("is_class_enum_bitfield", "class", "enum", "no_inheritance"), &ClassDB::is_class_enum_bitfield, DEFVAL(false));
 
+	//	::ClassDB::bind_method(D_METHOD("class_has_struct", "class", "struct", "no_inheritance"), &ClassDB::class_has_struct, DEFVAL(false));
+	//	::ClassDB::bind_method(D_METHOD("class_get_struct_list", "class", "no_inheritance"), &ClassDB::class_get_struct_list, DEFVAL(false));
+	//	::ClassDB::bind_method(D_METHOD("class_get_struct_members", "class", "struct"), &ClassDB::class_get_struct_members);
+
 	::ClassDB::bind_method(D_METHOD("is_class_enabled", "class"), &ClassDB::is_class_enabled);
 
 	BIND_ENUM_CONSTANT(API_CORE);
diff --git a/core/core_bind.h b/core/core_bind.h
index ce0bde3c05b8..a21f04e3a23d 100644
--- a/core/core_bind.h
+++ b/core/core_bind.h
@@ -468,9 +468,12 @@ class ClassDB : public Object {
 	APIType class_get_api_type(const StringName &p_class) const;
 	bool class_has_signal(const StringName &p_class, const StringName &p_signal) const;
 	Dictionary class_get_signal(const StringName &p_class, const StringName &p_signal) const;
+	//Struct<MethodInfo> class_get_signal_as_struct(const StringName &p_class, const StringName &p_signal) const;
 	TypedArray<Dictionary> class_get_signal_list(const StringName &p_class, bool p_no_inheritance = false) const;
+	//TypedArray<Struct<MethodInfo>> class_get_signal_list_as_structs(const StringName &p_class, bool p_no_inheritance = false) const;
 
 	TypedArray<Dictionary> class_get_property_list(const StringName &p_class, bool p_no_inheritance = false) const;
+	//TypedArray<Struct<PropertyInfo>> class_get_property_list_as_structs(const StringName &p_class, bool p_no_inheritance = false) const;
 	StringName class_get_property_getter(const StringName &p_class, const StringName &p_property);
 	StringName class_get_property_setter(const StringName &p_class, const StringName &p_property);
 	Variant class_get_property(Object *p_object, const StringName &p_property) const;
@@ -483,6 +486,7 @@ class ClassDB : public Object {
 	int class_get_method_argument_count(const StringName &p_class, const StringName &p_method, bool p_no_inheritance = false) const;
 
 	TypedArray<Dictionary> class_get_method_list(const StringName &p_class, bool p_no_inheritance = false) const;
+	//TypedArray<Struct<MethodInfo>> class_get_method_list_as_structs(const StringName &p_class, bool p_no_inheritance = false) const;
 	Variant class_call_static_method(const Variant **p_arguments, int p_argcount, Callable::CallError &r_call_error);
 
 	PackedStringArray class_get_integer_constant_list(const StringName &p_class, bool p_no_inheritance = false) const;
@@ -498,6 +502,10 @@ class ClassDB : public Object {
 
 	bool is_class_enabled(const StringName &p_class) const;
 
+	bool class_has_struct(const StringName &p_class, const StringName &p_struct, bool p_no_inheritance = false) const;
+	TypedArray<Dictionary> class_get_struct_list(const StringName &p_class, bool p_no_inheritance = false) const;
+	TypedArray<Dictionary> class_get_struct_members(const StringName &p_class, const StringName &p_struct) const;
+
 #ifdef TOOLS_ENABLED
 	virtual void get_argument_options(const StringName &p_function, int p_idx, List<String> *r_options) const override;
 #endif
diff --git a/core/object/class_db.cpp b/core/object/class_db.cpp
index 9826d73a9dda..82713cd97c0a 100644
--- a/core/object/class_db.cpp
+++ b/core/object/class_db.cpp
@@ -34,6 +34,7 @@
 #include "core/io/resource_loader.h"
 #include "core/object/script_language.h"
 #include "core/os/mutex.h"
+#include "core/variant/struct.h"
 #include "core/version.h"
 
 #define OBJTYPE_RLOCK RWLockRead _rw_lockr_(lock);
@@ -505,6 +506,8 @@ uint32_t ClassDB::get_api_hash(APIType p_api) {
 			hash = hash_murmur3_one_64(F.hint_string.hash(), hash);
 			hash = hash_murmur3_one_64(F.usage, hash);
 		}
+
+		// TODO: do I need to incorporate the structs into the hash?
 	}
 
 	hash = hash_fmix32(hash);
@@ -1317,6 +1320,67 @@ bool ClassDB::is_enum_bitfield(const StringName &p_class, const StringName &p_na
 	return false;
 }
 
+void ClassDB::bind_struct(const StringName &p_class_name, const StructInfo &p_struct_info) {
+	OBJTYPE_WLOCK;
+
+	ClassInfo *type = classes.getptr(p_class_name);
+
+	ERR_FAIL_NULL(type);
+
+	if (type->struct_map.has(p_struct_info.name)) {
+		ERR_FAIL();
+	}
+
+	String struct_name = p_struct_info.name;
+	if (struct_name.contains(".")) {
+		struct_name = struct_name.get_slicec('.', 1);
+	}
+
+	type->struct_map.insert(struct_name, p_struct_info);
+}
+
+void ClassDB::get_struct_list(const StringName &p_class, List<StructInfo> *r_structs, bool p_no_inheritance) {
+	OBJTYPE_RLOCK;
+
+	ClassInfo *type = classes.getptr(p_class);
+
+	while (type) {
+		for (const KeyValue<StringName, StructInfo> &E : type->struct_map) {
+			r_structs->push_back(E.value);
+		}
+
+		if (p_no_inheritance) {
+			break;
+		}
+
+		type = type->inherits_ptr;
+	}
+}
+
+const StructInfo *ClassDB::get_struct_info(const StringName &p_class, const StringName &p_name, bool p_no_inheritance) {
+	OBJTYPE_RLOCK;
+
+	ClassInfo *type = classes.getptr(p_class);
+	while (type) {
+		if (const StructInfo *info = type->struct_map.getptr(p_name)) {
+			return info;
+		}
+		if (p_no_inheritance) {
+			return nullptr;
+		}
+		type = type->inherits_ptr;
+	}
+	return nullptr;
+}
+
+const StructInfo *ClassDB::get_struct_info(const String &p_qualified_name, bool p_no_inheritance) {
+	Vector<String> names = String(p_qualified_name).split("."); // TODO: what about cases other than size == 2?
+	if (names.size() == 2) {
+		return ClassDB::get_struct_info(names[0], names[1]);
+	}
+	return nullptr;
+}
+
 void ClassDB::add_signal(const StringName &p_class, const MethodInfo &p_signal) {
 	OBJTYPE_WLOCK;
 
@@ -1429,6 +1493,15 @@ void ClassDB::add_property_array(const StringName &p_class, const StringName &p_
 	type->property_list.push_back(PropertyInfo(Variant::NIL, p_path, PROPERTY_HINT_NONE, "", PROPERTY_USAGE_EDITOR | PROPERTY_USAGE_ARRAY, p_array_element_prefix));
 }
 
+// TODO: This probably isn't right, I just copied the function above.
+void ClassDB::add_property_struct(const StringName &p_class, const StringName &p_path, const String &p_array_element_prefix) {
+	OBJTYPE_WLOCK; // TODO: I'm not sure what this does but it's in the one above so I figure I need it
+	ClassInfo *type = classes.getptr(p_class);
+	ERR_FAIL_NULL(type);
+
+	type->property_list.push_back(PropertyInfo(Variant::NIL, p_path, PROPERTY_HINT_NONE, "", PROPERTY_USAGE_EDITOR | PROPERTY_USAGE_ARRAY, p_array_element_prefix));
+}
+
 // NOTE: For implementation simplicity reasons, this method doesn't allow setters to have optional arguments at the end.
 void ClassDB::add_property(const StringName &p_class, const PropertyInfo &p_pinfo, const StringName &p_setter, const StringName &p_getter, int p_index) {
 	lock.read_lock();
diff --git a/core/object/class_db.h b/core/object/class_db.h
index 81100d7586b8..22515125de19 100644
--- a/core/object/class_db.h
+++ b/core/object/class_db.h
@@ -114,6 +114,7 @@ class ClassDB {
 		};
 
 		HashMap<StringName, EnumInfo> enum_map;
+		HashMap<StringName, StructInfo> struct_map;
 		HashMap<StringName, MethodInfo> signal_map;
 		List<PropertyInfo> property_list;
 		HashMap<StringName, PropertyInfo> property_map;
@@ -426,6 +427,7 @@ class ClassDB {
 	static void add_property_subgroup(const StringName &p_class, const String &p_name, const String &p_prefix = "", int p_indent_depth = 0);
 	static void add_property_array_count(const StringName &p_class, const String &p_label, const StringName &p_count_property, const StringName &p_count_setter, const StringName &p_count_getter, const String &p_array_element_prefix, uint32_t p_count_usage = PROPERTY_USAGE_DEFAULT);
 	static void add_property_array(const StringName &p_class, const StringName &p_path, const String &p_array_element_prefix);
+	static void add_property_struct(const StringName &p_class, const StringName &p_path, const String &p_array_element_prefix);
 	static void add_property(const StringName &p_class, const PropertyInfo &p_pinfo, const StringName &p_setter, const StringName &p_getter, int p_index = -1);
 	static void set_property_default_value(const StringName &p_class, const StringName &p_name, const Variant &p_default);
 	static void add_linked_property(const StringName &p_class, const String &p_property, const String &p_linked_property);
@@ -467,6 +469,11 @@ class ClassDB {
 	static bool has_enum(const StringName &p_class, const StringName &p_name, bool p_no_inheritance = false);
 	static bool is_enum_bitfield(const StringName &p_class, const StringName &p_name, bool p_no_inheritance = false);
 
+	static void bind_struct(const StringName &p_class, const StructInfo &p_struct_info);
+	static void get_struct_list(const StringName &p_class, List<StructInfo> *r_structs, bool p_no_inheritance = false);
+	static const StructInfo *get_struct_info(const StringName &p_class, const StringName &p_name, bool p_no_inheritance = false);
+	static const StructInfo *get_struct_info(const String &p_qualified_name, bool p_no_inheritance = false);
+
 	static void set_method_error_return_values(const StringName &p_class, const StringName &p_method, const Vector<Error> &p_values);
 	static Vector<Error> get_method_error_return_values(const StringName &p_class, const StringName &p_method);
 	static Variant class_get_default_property_value(const StringName &p_class, const StringName &p_property, bool *r_valid = nullptr);
@@ -506,6 +513,9 @@ class ClassDB {
 #define BIND_CONSTANT(m_constant) \
 	::ClassDB::bind_integer_constant(get_class_static(), StringName(), #m_constant, m_constant);
 
+#define BIND_STRUCT(m_struct) \
+	::ClassDB::bind_struct(get_class_static(), m_struct::Layout::get_struct_info());
+
 #ifdef DEBUG_METHODS_ENABLED
 
 _FORCE_INLINE_ void errarray_add_str(Vector<Error> &arr) {
diff --git a/core/object/method_info.cpp b/core/object/method_info.cpp
new file mode 100644
index 000000000000..e79f937ea868
--- /dev/null
+++ b/core/object/method_info.cpp
@@ -0,0 +1,99 @@
+/**************************************************************************/
+/*  method_info.cpp                                                       */
+/**************************************************************************/
+/*                         This file is part of:                          */
+/*                             GODOT ENGINE                               */
+/*                        https://godotengine.org                         */
+/**************************************************************************/
+/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
+/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur.                  */
+/*                                                                        */
+/* Permission is hereby granted, free of charge, to any person obtaining  */
+/* a copy of this software and associated documentation files (the        */
+/* "Software"), to deal in the Software without restriction, including    */
+/* without limitation the rights to use, copy, modify, merge, publish,    */
+/* distribute, sublicense, and/or sell copies of the Software, and to     */
+/* permit persons to whom the Software is furnished to do so, subject to  */
+/* the following conditions:                                              */
+/*                                                                        */
+/* The above copyright notice and this permission notice shall be         */
+/* included in all copies or substantial portions of the Software.        */
+/*                                                                        */
+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,        */
+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF     */
+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. */
+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY   */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,   */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE      */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                 */
+/**************************************************************************/
+
+#include "method_info.h"
+#include "core/variant/struct.h"
+#include "core/variant/typed_array.h"
+
+PropertyInfo MethodInfo::return_val::from_variant(const Variant &p_variant) {
+	return PropertyInfo(Struct<PropertyInfo>(p_variant));
+}
+
+Variant MethodInfo::return_val::to_variant(const PropertyInfo &p_value) {
+	return Struct<PropertyInfo>(p_value);
+}
+
+List<PropertyInfo> MethodInfo::arguments::from_variant(const Variant &p_variant) {
+	return (List<PropertyInfo>)TypedArray<Struct<PropertyInfo>>(p_variant);
+}
+
+Variant MethodInfo::arguments::to_variant(const List<PropertyInfo> &p_value) {
+	return TypedArray<Struct<PropertyInfo>>(&p_value);
+}
+
+MethodInfo::operator Dictionary() const {
+	Dictionary d;
+	d["name"] = name;
+	d["args"] = convert_property_list(&arguments);
+	Array da;
+	for (int i = 0; i < default_arguments.size(); i++) {
+		da.push_back(default_arguments[i]);
+	}
+	d["default_args"] = da;
+	d["flags"] = flags;
+	d["id"] = id;
+	Dictionary r = return_val;
+	d["return"] = r;
+	return d;
+}
+
+MethodInfo MethodInfo::from_dict(const Dictionary &p_dict) {
+	MethodInfo mi;
+
+	if (p_dict.has("name")) {
+		mi.name = p_dict["name"];
+	}
+	Array args;
+	if (p_dict.has("args")) {
+		args = p_dict["args"];
+	}
+
+	for (const Variant &arg : args) {
+		Dictionary d = arg;
+		mi.arguments.push_back(PropertyInfo::from_dict(d));
+	}
+	Array defargs;
+	if (p_dict.has("default_args")) {
+		defargs = p_dict["default_args"];
+	}
+	for (const Variant &defarg : defargs) {
+		mi.default_arguments.push_back(defarg);
+	}
+
+	if (p_dict.has("return")) {
+		mi.return_val = PropertyInfo::from_dict(p_dict["return"]);
+	}
+
+	if (p_dict.has("flags")) {
+		mi.flags = p_dict["flags"];
+	}
+
+	return mi;
+}
diff --git a/core/object/method_info.h b/core/object/method_info.h
new file mode 100644
index 000000000000..d2b2668d1c61
--- /dev/null
+++ b/core/object/method_info.h
@@ -0,0 +1,137 @@
+/**************************************************************************/
+/*  method_info.h                                                         */
+/**************************************************************************/
+/*                         This file is part of:                          */
+/*                             GODOT ENGINE                               */
+/*                        https://godotengine.org                         */
+/**************************************************************************/
+/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
+/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur.                  */
+/*                                                                        */
+/* Permission is hereby granted, free of charge, to any person obtaining  */
+/* a copy of this software and associated documentation files (the        */
+/* "Software"), to deal in the Software without restriction, including    */
+/* without limitation the rights to use, copy, modify, merge, publish,    */
+/* distribute, sublicense, and/or sell copies of the Software, and to     */
+/* permit persons to whom the Software is furnished to do so, subject to  */
+/* the following conditions:                                              */
+/*                                                                        */
+/* The above copyright notice and this permission notice shall be         */
+/* included in all copies or substantial portions of the Software.        */
+/*                                                                        */
+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,        */
+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF     */
+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. */
+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY   */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,   */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE      */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                 */
+/**************************************************************************/
+
+#ifndef METHOD_INFO_H
+#define METHOD_INFO_H
+
+#include "core/object/property_info.h"
+#include "core/variant/variant.h"
+
+enum MethodFlags {
+	METHOD_FLAG_NORMAL = 1,
+	METHOD_FLAG_EDITOR = 2,
+	METHOD_FLAG_CONST = 4,
+	METHOD_FLAG_VIRTUAL = 8,
+	METHOD_FLAG_VARARG = 16,
+	METHOD_FLAG_STATIC = 32,
+	METHOD_FLAG_OBJECT_CORE = 64,
+	METHOD_FLAG_VIRTUAL_REQUIRED = 128,
+	METHOD_FLAGS_DEFAULT = METHOD_FLAG_NORMAL,
+};
+
+struct MethodInfo {
+	STRUCT_DECLARE(MethodInfo);
+	STRUCT_MEMBER_PRIMITIVE(String, name, String());
+	STRUCT_MEMBER_PRIMITIVE_FROM_TO_ALIAS(List<PropertyInfo>, arguments, "args", List<PropertyInfo>());
+	STRUCT_MEMBER_PRIMITIVE_ALIAS(Vector<Variant>, default_arguments, "default_args", Vector<Variant>());
+	STRUCT_MEMBER_PRIMITIVE(uint32_t, flags, METHOD_FLAGS_DEFAULT);
+	STRUCT_MEMBER_PRIMITIVE(int, id, 0);
+	STRUCT_MEMBER_STRUCT_FROM_TO_ALIAS(PropertyInfo, return_val, "return", PropertyInfo());
+
+	STRUCT_MEMBER_PRIMITIVE(int, return_val_metadata, 0);
+	STRUCT_MEMBER_PRIMITIVE(Vector<int>, arguments_metadata, Vector<int>());
+	STRUCT_LAYOUT_OWNER(Object, MethodInfo, struct name, struct arguments, struct default_arguments, struct flags, struct id, struct return_val, struct return_val_metadata, struct arguments_metadata);
+
+	int get_argument_meta(int p_arg) const {
+		ERR_FAIL_COND_V(p_arg < -1 || p_arg > arguments.size(), 0);
+		if (p_arg == -1) {
+			return return_val_metadata;
+		}
+		return arguments_metadata.size() > p_arg ? arguments_metadata[p_arg] : 0;
+	}
+
+	inline bool operator==(const MethodInfo &p_method) const { return id == p_method.id; }
+	inline bool operator<(const MethodInfo &p_method) const { return id == p_method.id ? (name < p_method.name) : (id < p_method.id); }
+
+	operator Dictionary() const;
+
+	static MethodInfo from_dict(const Dictionary &p_dict);
+
+	MethodInfo() {}
+
+	explicit MethodInfo(const GDExtensionMethodInfo &pinfo) :
+			name(*reinterpret_cast<StringName *>(pinfo.name)) {
+		for (uint32_t j = 0; j < pinfo.argument_count; j++) {
+			arguments.push_back(PropertyInfo(pinfo.arguments[j]));
+		}
+		const Variant *def_values = (const Variant *)pinfo.default_arguments;
+		for (uint32_t j = 0; j < pinfo.default_argument_count; j++) {
+			default_arguments.push_back(def_values[j]);
+		}
+		flags = pinfo.flags;
+		id = pinfo.id;
+		return_val = PropertyInfo(pinfo.return_value);
+	}
+
+	void _push_params(const PropertyInfo &p_param) {
+		arguments.push_back(p_param);
+	}
+
+	template <typename... VarArgs>
+	void _push_params(const PropertyInfo &p_param, VarArgs... p_params) {
+		arguments.push_back(p_param);
+		_push_params(p_params...);
+	}
+
+	MethodInfo(const String &p_name) { name = p_name; }
+
+	template <typename... VarArgs>
+	MethodInfo(const String &p_name, VarArgs... p_params) {
+		name = p_name;
+		_push_params(p_params...);
+	}
+
+	MethodInfo(Variant::Type ret) { return_val.type = ret; }
+	MethodInfo(Variant::Type ret, const String &p_name) {
+		return_val.type = ret;
+		name = p_name;
+	}
+
+	template <typename... VarArgs>
+	MethodInfo(Variant::Type ret, const String &p_name, VarArgs... p_params) {
+		name = p_name;
+		return_val.type = ret;
+		_push_params(p_params...);
+	}
+
+	MethodInfo(const PropertyInfo &p_ret, const String &p_name) {
+		return_val = p_ret;
+		name = p_name;
+	}
+
+	template <typename... VarArgs>
+	MethodInfo(const PropertyInfo &p_ret, const String &p_name, VarArgs... p_params) {
+		return_val = p_ret;
+		name = p_name;
+		_push_params(p_params...);
+	}
+};
+
+#endif // METHOD_INFO_H
diff --git a/core/object/object.cpp b/core/object/object.cpp
index b3a4ec6e2ed6..63231daa241e 100644
--- a/core/object/object.cpp
+++ b/core/object/object.cpp
@@ -39,6 +39,7 @@
 #include "core/string/print_string.h"
 #include "core/string/translation_server.h"
 #include "core/templates/local_vector.h"
+#include "core/variant/struct.h"
 #include "core/variant/typed_array.h"
 
 #ifdef DEBUG_ENABLED
@@ -66,106 +67,6 @@ struct _ObjectDebugLock {
 
 #endif
 
-PropertyInfo::operator Dictionary() const {
-	Dictionary d;
-	d["name"] = name;
-	d["class_name"] = class_name;
-	d["type"] = type;
-	d["hint"] = hint;
-	d["hint_string"] = hint_string;
-	d["usage"] = usage;
-	return d;
-}
-
-PropertyInfo PropertyInfo::from_dict(const Dictionary &p_dict) {
-	PropertyInfo pi;
-
-	if (p_dict.has("type")) {
-		pi.type = Variant::Type(int(p_dict["type"]));
-	}
-
-	if (p_dict.has("name")) {
-		pi.name = p_dict["name"];
-	}
-
-	if (p_dict.has("class_name")) {
-		pi.class_name = p_dict["class_name"];
-	}
-
-	if (p_dict.has("hint")) {
-		pi.hint = PropertyHint(int(p_dict["hint"]));
-	}
-
-	if (p_dict.has("hint_string")) {
-		pi.hint_string = p_dict["hint_string"];
-	}
-
-	if (p_dict.has("usage")) {
-		pi.usage = p_dict["usage"];
-	}
-
-	return pi;
-}
-
-TypedArray<Dictionary> convert_property_list(const List<PropertyInfo> *p_list) {
-	TypedArray<Dictionary> va;
-	for (const List<PropertyInfo>::Element *E = p_list->front(); E; E = E->next()) {
-		va.push_back(Dictionary(E->get()));
-	}
-
-	return va;
-}
-
-MethodInfo::operator Dictionary() const {
-	Dictionary d;
-	d["name"] = name;
-	d["args"] = convert_property_list(&arguments);
-	Array da;
-	for (int i = 0; i < default_arguments.size(); i++) {
-		da.push_back(default_arguments[i]);
-	}
-	d["default_args"] = da;
-	d["flags"] = flags;
-	d["id"] = id;
-	Dictionary r = return_val;
-	d["return"] = r;
-	return d;
-}
-
-MethodInfo MethodInfo::from_dict(const Dictionary &p_dict) {
-	MethodInfo mi;
-
-	if (p_dict.has("name")) {
-		mi.name = p_dict["name"];
-	}
-	Array args;
-	if (p_dict.has("args")) {
-		args = p_dict["args"];
-	}
-
-	for (const Variant &arg : args) {
-		Dictionary d = arg;
-		mi.arguments.push_back(PropertyInfo::from_dict(d));
-	}
-	Array defargs;
-	if (p_dict.has("default_args")) {
-		defargs = p_dict["default_args"];
-	}
-	for (const Variant &defarg : defargs) {
-		mi.default_arguments.push_back(defarg);
-	}
-
-	if (p_dict.has("return")) {
-		mi.return_val = PropertyInfo::from_dict(p_dict["return"]);
-	}
-
-	if (p_dict.has("flags")) {
-		mi.flags = p_dict["flags"];
-	}
-
-	return mi;
-}
-
 Object::Connection::operator Variant() const {
 	Dictionary d;
 	d["signal"] = signal;
@@ -1039,6 +940,12 @@ TypedArray<Dictionary> Object::_get_property_list_bind() const {
 	return convert_property_list(&lpi);
 }
 
+//TypedArray<Struct<PropertyInfo>> Object::_get_property_list_as_structs_bind() const {
+//	List<PropertyInfo> lpi;
+//	get_property_list(&lpi);
+//	return TypedArray<Struct<PropertyInfo>>(&lpi);
+//}
+
 TypedArray<Dictionary> Object::_get_method_list_bind() const {
 	List<MethodInfo> ml;
 	get_method_list(&ml);
@@ -1053,6 +960,12 @@ TypedArray<Dictionary> Object::_get_method_list_bind() const {
 	return ret;
 }
 
+//TypedArray<Struct<MethodInfo>> Object::_get_method_list_as_structs_bind() const {
+//	List<MethodInfo> ml;
+//	get_method_list(&ml);
+//	return TypedArray<Struct<MethodInfo>>(&ml);
+//}
+
 TypedArray<StringName> Object::_get_meta_list_bind() const {
 	TypedArray<StringName> _metaret;
 
@@ -1253,6 +1166,10 @@ void Object::_add_user_signal(const String &p_name, const Array &p_args) {
 	}
 }
 
+//void Object::_add_user_signal_as_struct(const Struct<MethodInfo> &p_signal) {
+//	add_user_signal(MethodInfo(p_signal));
+//}
+
 TypedArray<Dictionary> Object::_get_signal_list() const {
 	List<MethodInfo> signal_list;
 	get_signal_list(&signal_list);
@@ -1265,6 +1182,12 @@ TypedArray<Dictionary> Object::_get_signal_list() const {
 	return ret;
 }
 
+//TypedArray<Struct<MethodInfo>> Object::_get_signal_list_as_structs() const {
+//	List<MethodInfo> signal_list;
+//	get_signal_list(&signal_list);
+//	return TypedArray<Struct<MethodInfo>>(&signal_list);
+//}
+
 TypedArray<Dictionary> Object::_get_signal_connection_list(const StringName &p_signal) const {
 	List<Connection> conns;
 	get_all_signal_connections(&conns);
@@ -1280,6 +1203,12 @@ TypedArray<Dictionary> Object::_get_signal_connection_list(const StringName &p_s
 	return ret;
 }
 
+//TypedArray<Struct<Object::Connection>> Object::_get_signal_connection_list_as_structs(const StringName &p_signal) const {
+//	List<Connection> conns;
+//	get_all_signal_connections(&conns);
+//	return TypedArray<Struct<Connection>>(&conns);
+//}
+
 TypedArray<Dictionary> Object::_get_incoming_connections() const {
 	TypedArray<Dictionary> ret;
 	for (const Object::Connection &connection : connections) {
@@ -1289,6 +1218,10 @@ TypedArray<Dictionary> Object::_get_incoming_connections() const {
 	return ret;
 }
 
+//TypedArray<Struct<Object::Connection>> Object::_get_incoming_connections_as_structs() const {
+//	return TypedArray<Struct<Connection>>(&connections);
+//}
+
 bool Object::has_signal(const StringName &p_name) const {
 	if (!script.is_null()) {
 		Ref<Script> scr = script;
@@ -1655,7 +1588,9 @@ void Object::_bind_methods() {
 	ClassDB::bind_method(D_METHOD("set_indexed", "property_path", "value"), &Object::_set_indexed_bind);
 	ClassDB::bind_method(D_METHOD("get_indexed", "property_path"), &Object::_get_indexed_bind);
 	ClassDB::bind_method(D_METHOD("get_property_list"), &Object::_get_property_list_bind);
+	//ClassDB::bind_method(D_METHOD("get_property_list_as_structs"), &Object::_get_property_list_as_structs_bind);
 	ClassDB::bind_method(D_METHOD("get_method_list"), &Object::_get_method_list_bind);
+	//ClassDB::bind_method(D_METHOD("get_method_list_as_structs"), &Object::_get_method_list_as_structs_bind);
 	ClassDB::bind_method(D_METHOD("property_can_revert", "property"), &Object::property_can_revert);
 	ClassDB::bind_method(D_METHOD("property_get_revert", "property"), &Object::property_get_revert);
 	ClassDB::bind_method(D_METHOD("notification", "what", "reversed"), &Object::notification, DEFVAL(false));
@@ -1672,6 +1607,7 @@ void Object::_bind_methods() {
 	ClassDB::bind_method(D_METHOD("get_meta_list"), &Object::_get_meta_list_bind);
 
 	ClassDB::bind_method(D_METHOD("add_user_signal", "signal", "arguments"), &Object::_add_user_signal, DEFVAL(Array()));
+	//ClassDB::bind_method(D_METHOD("add_user_signal_as_struct", "signal"), &Object::_add_user_signal_as_struct);
 	ClassDB::bind_method(D_METHOD("has_user_signal", "signal"), &Object::_has_user_signal);
 	ClassDB::bind_method(D_METHOD("remove_user_signal", "signal"), &Object::_remove_user_signal);
 
@@ -1709,8 +1645,11 @@ void Object::_bind_methods() {
 
 	ClassDB::bind_method(D_METHOD("has_signal", "signal"), &Object::has_signal);
 	ClassDB::bind_method(D_METHOD("get_signal_list"), &Object::_get_signal_list);
+	//ClassDB::bind_method(D_METHOD("get_signal_list_as_structs"), &Object::_get_signal_list_as_structs);
 	ClassDB::bind_method(D_METHOD("get_signal_connection_list", "signal"), &Object::_get_signal_connection_list);
+	//ClassDB::bind_method(D_METHOD("get_signal_connection_list_as_structs", "signal"), &Object::_get_signal_connection_list_as_structs);
 	ClassDB::bind_method(D_METHOD("get_incoming_connections"), &Object::_get_incoming_connections);
+	//ClassDB::bind_method(D_METHOD("get_incoming_connections_as_structs"), &Object::_get_incoming_connections_as_structs);
 
 	ClassDB::bind_method(D_METHOD("connect", "signal", "callable", "flags"), &Object::connect, DEFVAL(0));
 	ClassDB::bind_method(D_METHOD("disconnect", "signal", "callable"), &Object::disconnect);
@@ -1807,6 +1746,10 @@ void Object::_bind_methods() {
 	BIND_ENUM_CONSTANT(CONNECT_PERSIST);
 	BIND_ENUM_CONSTANT(CONNECT_ONE_SHOT);
 	BIND_ENUM_CONSTANT(CONNECT_REFERENCE_COUNTED);
+
+	BIND_STRUCT(PropertyInfo);
+	BIND_STRUCT(MethodInfo);
+	BIND_STRUCT(Connection);
 }
 
 void Object::set_deferred(const StringName &p_property, const Variant &p_value) {
diff --git a/core/object/object.h b/core/object/object.h
index 110d2790c58e..a215c8e88bdc 100644
--- a/core/object/object.h
+++ b/core/object/object.h
@@ -33,7 +33,9 @@
 
 #include "core/extension/gdextension_interface.h"
 #include "core/object/message_queue.h"
+#include "core/object/method_info.h"
 #include "core/object/object_id.h"
+#include "core/object/property_info.h"
 #include "core/os/rw_lock.h"
 #include "core/os/spin_lock.h"
 #include "core/templates/hash_map.h"
@@ -42,90 +44,14 @@
 #include "core/templates/rb_map.h"
 #include "core/templates/safe_refcount.h"
 #include "core/variant/callable_bind.h"
+#include "core/variant/struct_generator.h"
 #include "core/variant/variant.h"
 
 template <typename T>
 class TypedArray;
 
-enum PropertyHint {
-	PROPERTY_HINT_NONE, ///< no hint provided.
-	PROPERTY_HINT_RANGE, ///< hint_text = "min,max[,step][,or_greater][,or_less][,hide_slider][,radians_as_degrees][,degrees][,exp][,suffix:<keyword>] range.
-	PROPERTY_HINT_ENUM, ///< hint_text= "val1,val2,val3,etc"
-	PROPERTY_HINT_ENUM_SUGGESTION, ///< hint_text= "val1,val2,val3,etc"
-	PROPERTY_HINT_EXP_EASING, /// exponential easing function (Math::ease) use "attenuation" hint string to revert (flip h), "positive_only" to exclude in-out and out-in. (ie: "attenuation,positive_only")
-	PROPERTY_HINT_LINK,
-	PROPERTY_HINT_FLAGS, ///< hint_text= "flag1,flag2,etc" (as bit flags)
-	PROPERTY_HINT_LAYERS_2D_RENDER,
-	PROPERTY_HINT_LAYERS_2D_PHYSICS,
-	PROPERTY_HINT_LAYERS_2D_NAVIGATION,
-	PROPERTY_HINT_LAYERS_3D_RENDER,
-	PROPERTY_HINT_LAYERS_3D_PHYSICS,
-	PROPERTY_HINT_LAYERS_3D_NAVIGATION,
-	PROPERTY_HINT_FILE, ///< a file path must be passed, hint_text (optionally) is a filter "*.png,*.wav,*.doc,"
-	PROPERTY_HINT_DIR, ///< a directory path must be passed
-	PROPERTY_HINT_GLOBAL_FILE, ///< a file path must be passed, hint_text (optionally) is a filter "*.png,*.wav,*.doc,"
-	PROPERTY_HINT_GLOBAL_DIR, ///< a directory path must be passed
-	PROPERTY_HINT_RESOURCE_TYPE, ///< a resource object type
-	PROPERTY_HINT_MULTILINE_TEXT, ///< used for string properties that can contain multiple lines
-	PROPERTY_HINT_EXPRESSION, ///< used for string properties that can contain multiple lines
-	PROPERTY_HINT_PLACEHOLDER_TEXT, ///< used to set a placeholder text for string properties
-	PROPERTY_HINT_COLOR_NO_ALPHA, ///< used for ignoring alpha component when editing a color
-	PROPERTY_HINT_OBJECT_ID,
-	PROPERTY_HINT_TYPE_STRING, ///< a type string, the hint is the base type to choose
-	PROPERTY_HINT_NODE_PATH_TO_EDITED_NODE, // Deprecated.
-	PROPERTY_HINT_OBJECT_TOO_BIG, ///< object is too big to send
-	PROPERTY_HINT_NODE_PATH_VALID_TYPES,
-	PROPERTY_HINT_SAVE_FILE, ///< a file path must be passed, hint_text (optionally) is a filter "*.png,*.wav,*.doc,". This opens a save dialog
-	PROPERTY_HINT_GLOBAL_SAVE_FILE, ///< a file path must be passed, hint_text (optionally) is a filter "*.png,*.wav,*.doc,". This opens a save dialog
-	PROPERTY_HINT_INT_IS_OBJECTID, // Deprecated.
-	PROPERTY_HINT_INT_IS_POINTER,
-	PROPERTY_HINT_ARRAY_TYPE,
-	PROPERTY_HINT_LOCALE_ID,
-	PROPERTY_HINT_LOCALIZABLE_STRING,
-	PROPERTY_HINT_NODE_TYPE, ///< a node object type
-	PROPERTY_HINT_HIDE_QUATERNION_EDIT, /// Only Node3D::transform should hide the quaternion editor.
-	PROPERTY_HINT_PASSWORD,
-	PROPERTY_HINT_LAYERS_AVOIDANCE,
-	PROPERTY_HINT_DICTIONARY_TYPE,
-	PROPERTY_HINT_TOOL_BUTTON,
-	PROPERTY_HINT_MAX,
-};
-
-enum PropertyUsageFlags {
-	PROPERTY_USAGE_NONE = 0,
-	PROPERTY_USAGE_STORAGE = 1 << 1,
-	PROPERTY_USAGE_EDITOR = 1 << 2,
-	PROPERTY_USAGE_INTERNAL = 1 << 3,
-	PROPERTY_USAGE_CHECKABLE = 1 << 4, // Used for editing global variables.
-	PROPERTY_USAGE_CHECKED = 1 << 5, // Used for editing global variables.
-	PROPERTY_USAGE_GROUP = 1 << 6, // Used for grouping props in the editor.
-	PROPERTY_USAGE_CATEGORY = 1 << 7,
-	PROPERTY_USAGE_SUBGROUP = 1 << 8,
-	PROPERTY_USAGE_CLASS_IS_BITFIELD = 1 << 9,
-	PROPERTY_USAGE_NO_INSTANCE_STATE = 1 << 10,
-	PROPERTY_USAGE_RESTART_IF_CHANGED = 1 << 11,
-	PROPERTY_USAGE_SCRIPT_VARIABLE = 1 << 12,
-	PROPERTY_USAGE_STORE_IF_NULL = 1 << 13,
-	PROPERTY_USAGE_UPDATE_ALL_IF_MODIFIED = 1 << 14,
-	PROPERTY_USAGE_SCRIPT_DEFAULT_VALUE = 1 << 15, // Deprecated.
-	PROPERTY_USAGE_CLASS_IS_ENUM = 1 << 16,
-	PROPERTY_USAGE_NIL_IS_VARIANT = 1 << 17,
-	PROPERTY_USAGE_ARRAY = 1 << 18, // Used in the inspector to group properties as elements of an array.
-	PROPERTY_USAGE_ALWAYS_DUPLICATE = 1 << 19, // When duplicating a resource, always duplicate, even with subresource duplication disabled.
-	PROPERTY_USAGE_NEVER_DUPLICATE = 1 << 20, // When duplicating a resource, never duplicate, even with subresource duplication enabled.
-	PROPERTY_USAGE_HIGH_END_GFX = 1 << 21,
-	PROPERTY_USAGE_NODE_PATH_FROM_SCENE_ROOT = 1 << 22,
-	PROPERTY_USAGE_RESOURCE_NOT_PERSISTENT = 1 << 23,
-	PROPERTY_USAGE_KEYING_INCREMENTS = 1 << 24, // Used in inspector to increment property when keyed in animation player.
-	PROPERTY_USAGE_DEFERRED_SET_RESOURCE = 1 << 25, // Deprecated.
-	PROPERTY_USAGE_EDITOR_INSTANTIATE_OBJECT = 1 << 26, // For Object properties, instantiate them when creating in editor.
-	PROPERTY_USAGE_EDITOR_BASIC_SETTING = 1 << 27, //for project or editor settings, show when basic settings are selected.
-	PROPERTY_USAGE_READ_ONLY = 1 << 28, // Mark a property as read-only in the inspector.
-	PROPERTY_USAGE_SECRET = 1 << 29, // Export preset credentials that should be stored separately from the rest of the export config.
-
-	PROPERTY_USAGE_DEFAULT = PROPERTY_USAGE_STORAGE | PROPERTY_USAGE_EDITOR,
-	PROPERTY_USAGE_NO_EDITOR = PROPERTY_USAGE_STORAGE,
-};
+template <typename T>
+class Struct;
 
 #define ADD_SIGNAL(m_signal) ::ClassDB::add_signal(get_class_static(), m_signal)
 #define ADD_PROPERTY(m_property, m_setter, m_getter) ::ClassDB::add_property(get_class_static(), m_property, _scs_create(m_setter), _scs_create(m_getter))
@@ -140,171 +66,13 @@ enum PropertyUsageFlags {
 #define ADD_ARRAY_COUNT(m_label, m_count_property, m_count_property_setter, m_count_property_getter, m_prefix) ClassDB::add_property_array_count(get_class_static(), m_label, m_count_property, _scs_create(m_count_property_setter), _scs_create(m_count_property_getter), m_prefix)
 #define ADD_ARRAY_COUNT_WITH_USAGE_FLAGS(m_label, m_count_property, m_count_property_setter, m_count_property_getter, m_prefix, m_property_usage_flags) ClassDB::add_property_array_count(get_class_static(), m_label, m_count_property, _scs_create(m_count_property_setter), _scs_create(m_count_property_getter), m_prefix, m_property_usage_flags)
 #define ADD_ARRAY(m_array_path, m_prefix) ClassDB::add_property_array(get_class_static(), m_array_path, m_prefix)
+// TODO: This probably doesn't work yet as is.
+#define ADD_STRUCT(m_array_path, m_prefix) ClassDB::add_property_struct(get_class_static(), m_array_path, m_prefix)
 
 // Helper macro to use with PROPERTY_HINT_ARRAY_TYPE for arrays of specific resources:
 // PropertyInfo(Variant::ARRAY, "fallbacks", PROPERTY_HINT_ARRAY_TYPE, MAKE_RESOURCE_TYPE_HINT("Font")
 #define MAKE_RESOURCE_TYPE_HINT(m_type) vformat("%s/%s:%s", Variant::OBJECT, PROPERTY_HINT_RESOURCE_TYPE, m_type)
 
-struct PropertyInfo {
-	Variant::Type type = Variant::NIL;
-	String name;
-	StringName class_name; // For classes
-	PropertyHint hint = PROPERTY_HINT_NONE;
-	String hint_string;
-	uint32_t usage = PROPERTY_USAGE_DEFAULT;
-
-	// If you are thinking about adding another member to this class, ask the maintainer (Juan) first.
-
-	_FORCE_INLINE_ PropertyInfo added_usage(uint32_t p_fl) const {
-		PropertyInfo pi = *this;
-		pi.usage |= p_fl;
-		return pi;
-	}
-
-	operator Dictionary() const;
-
-	static PropertyInfo from_dict(const Dictionary &p_dict);
-
-	PropertyInfo() {}
-
-	PropertyInfo(const Variant::Type p_type, const String &p_name, const PropertyHint p_hint = PROPERTY_HINT_NONE, const String &p_hint_string = "", const uint32_t p_usage = PROPERTY_USAGE_DEFAULT, const StringName &p_class_name = StringName()) :
-			type(p_type),
-			name(p_name),
-			hint(p_hint),
-			hint_string(p_hint_string),
-			usage(p_usage) {
-		if (hint == PROPERTY_HINT_RESOURCE_TYPE) {
-			class_name = hint_string;
-		} else {
-			class_name = p_class_name;
-		}
-	}
-
-	PropertyInfo(const StringName &p_class_name) :
-			type(Variant::OBJECT),
-			class_name(p_class_name) {}
-
-	explicit PropertyInfo(const GDExtensionPropertyInfo &pinfo) :
-			type((Variant::Type)pinfo.type),
-			name(*reinterpret_cast<StringName *>(pinfo.name)),
-			class_name(*reinterpret_cast<StringName *>(pinfo.class_name)),
-			hint((PropertyHint)pinfo.hint),
-			hint_string(*reinterpret_cast<String *>(pinfo.hint_string)),
-			usage(pinfo.usage) {}
-
-	bool operator==(const PropertyInfo &p_info) const {
-		return ((type == p_info.type) &&
-				(name == p_info.name) &&
-				(class_name == p_info.class_name) &&
-				(hint == p_info.hint) &&
-				(hint_string == p_info.hint_string) &&
-				(usage == p_info.usage));
-	}
-
-	bool operator<(const PropertyInfo &p_info) const {
-		return name < p_info.name;
-	}
-};
-
-TypedArray<Dictionary> convert_property_list(const List<PropertyInfo> *p_list);
-
-enum MethodFlags {
-	METHOD_FLAG_NORMAL = 1,
-	METHOD_FLAG_EDITOR = 2,
-	METHOD_FLAG_CONST = 4,
-	METHOD_FLAG_VIRTUAL = 8,
-	METHOD_FLAG_VARARG = 16,
-	METHOD_FLAG_STATIC = 32,
-	METHOD_FLAG_OBJECT_CORE = 64,
-	METHOD_FLAG_VIRTUAL_REQUIRED = 128,
-	METHOD_FLAGS_DEFAULT = METHOD_FLAG_NORMAL,
-};
-
-struct MethodInfo {
-	String name;
-	PropertyInfo return_val;
-	uint32_t flags = METHOD_FLAGS_DEFAULT;
-	int id = 0;
-	List<PropertyInfo> arguments;
-	Vector<Variant> default_arguments;
-	int return_val_metadata = 0;
-	Vector<int> arguments_metadata;
-
-	int get_argument_meta(int p_arg) const {
-		ERR_FAIL_COND_V(p_arg < -1 || p_arg > arguments.size(), 0);
-		if (p_arg == -1) {
-			return return_val_metadata;
-		}
-		return arguments_metadata.size() > p_arg ? arguments_metadata[p_arg] : 0;
-	}
-
-	inline bool operator==(const MethodInfo &p_method) const { return id == p_method.id && name == p_method.name; }
-	inline bool operator<(const MethodInfo &p_method) const { return id == p_method.id ? (name < p_method.name) : (id < p_method.id); }
-
-	operator Dictionary() const;
-
-	static MethodInfo from_dict(const Dictionary &p_dict);
-
-	MethodInfo() {}
-
-	explicit MethodInfo(const GDExtensionMethodInfo &pinfo) :
-			name(*reinterpret_cast<StringName *>(pinfo.name)),
-			return_val(PropertyInfo(pinfo.return_value)),
-			flags(pinfo.flags),
-			id(pinfo.id) {
-		for (uint32_t j = 0; j < pinfo.argument_count; j++) {
-			arguments.push_back(PropertyInfo(pinfo.arguments[j]));
-		}
-		const Variant *def_values = (const Variant *)pinfo.default_arguments;
-		for (uint32_t j = 0; j < pinfo.default_argument_count; j++) {
-			default_arguments.push_back(def_values[j]);
-		}
-	}
-
-	void _push_params(const PropertyInfo &p_param) {
-		arguments.push_back(p_param);
-	}
-
-	template <typename... VarArgs>
-	void _push_params(const PropertyInfo &p_param, VarArgs... p_params) {
-		arguments.push_back(p_param);
-		_push_params(p_params...);
-	}
-
-	MethodInfo(const String &p_name) { name = p_name; }
-
-	template <typename... VarArgs>
-	MethodInfo(const String &p_name, VarArgs... p_params) {
-		name = p_name;
-		_push_params(p_params...);
-	}
-
-	MethodInfo(Variant::Type ret) { return_val.type = ret; }
-	MethodInfo(Variant::Type ret, const String &p_name) {
-		return_val.type = ret;
-		name = p_name;
-	}
-
-	template <typename... VarArgs>
-	MethodInfo(Variant::Type ret, const String &p_name, VarArgs... p_params) {
-		name = p_name;
-		return_val.type = ret;
-		_push_params(p_params...);
-	}
-
-	MethodInfo(const PropertyInfo &p_ret, const String &p_name) {
-		return_val = p_ret;
-		name = p_name;
-	}
-
-	template <typename... VarArgs>
-	MethodInfo(const PropertyInfo &p_ret, const String &p_name, VarArgs... p_params) {
-		return_val = p_ret;
-		name = p_name;
-		_push_params(p_params...);
-	}
-};
-
 // API used to extend in GDExtension and other C compatible compiled languages.
 class MethodBind;
 class GDExtension;
@@ -575,10 +343,12 @@ class Object {
 	};
 
 	struct Connection {
-		::Signal signal;
-		Callable callable;
+		STRUCT_DECLARE(Connection);
+		STRUCT_MEMBER_PRIMITIVE(::Signal, signal, ::Signal());
+		STRUCT_MEMBER_PRIMITIVE(Callable, callable, Callable());
+		STRUCT_MEMBER_PRIMITIVE(uint32_t, flags, 0);
+		STRUCT_LAYOUT_OWNER(Object, Connection, struct signal, struct callable, struct flags);
 
-		uint32_t flags = 0;
 		bool operator<(const Connection &p_conn) const;
 
 		operator Variant() const;
@@ -634,12 +404,16 @@ class Object {
 	mutable const StringName *_class_name_ptr = nullptr;
 
 	void _add_user_signal(const String &p_name, const Array &p_args = Array());
+	//void _add_user_signal_as_struct(const Struct<MethodInfo> &p_signal);
 	bool _has_user_signal(const StringName &p_name) const;
 	void _remove_user_signal(const StringName &p_name);
 	Error _emit_signal(const Variant **p_args, int p_argcount, Callable::CallError &r_error);
 	TypedArray<Dictionary> _get_signal_list() const;
 	TypedArray<Dictionary> _get_signal_connection_list(const StringName &p_signal) const;
 	TypedArray<Dictionary> _get_incoming_connections() const;
+	//TypedArray<Struct<MethodInfo>> _get_signal_list_as_structs() const;
+	//TypedArray<Struct<Connection>> _get_signal_connection_list_as_structs(const StringName &p_signal) const;
+	//TypedArray<Struct<Connection>> _get_incoming_connections_as_structs() const;
 	void _set_bind(const StringName &p_set, const Variant &p_value);
 	Variant _get_bind(const StringName &p_name) const;
 	void _set_indexed_bind(const NodePath &p_name, const Variant &p_value);
@@ -746,7 +520,9 @@ class Object {
 
 	TypedArray<StringName> _get_meta_list_bind() const;
 	TypedArray<Dictionary> _get_property_list_bind() const;
+	//TypedArray<Struct<PropertyInfo>> _get_property_list_as_structs_bind() const;
 	TypedArray<Dictionary> _get_method_list_bind() const;
+	//TypedArray<Struct<MethodInfo>> _get_method_list_as_structs_bind() const;
 
 	void _clear_internal_resource_paths(const Variant &p_var);
 
diff --git a/core/object/property_info.cpp b/core/object/property_info.cpp
new file mode 100644
index 000000000000..5a29da897773
--- /dev/null
+++ b/core/object/property_info.cpp
@@ -0,0 +1,90 @@
+/**************************************************************************/
+/*  property_info.cpp                                                     */
+/**************************************************************************/
+/*                         This file is part of:                          */
+/*                             GODOT ENGINE                               */
+/*                        https://godotengine.org                         */
+/**************************************************************************/
+/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
+/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur.                  */
+/*                                                                        */
+/* Permission is hereby granted, free of charge, to any person obtaining  */
+/* a copy of this software and associated documentation files (the        */
+/* "Software"), to deal in the Software without restriction, including    */
+/* without limitation the rights to use, copy, modify, merge, publish,    */
+/* distribute, sublicense, and/or sell copies of the Software, and to     */
+/* permit persons to whom the Software is furnished to do so, subject to  */
+/* the following conditions:                                              */
+/*                                                                        */
+/* The above copyright notice and this permission notice shall be         */
+/* included in all copies or substantial portions of the Software.        */
+/*                                                                        */
+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,        */
+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF     */
+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. */
+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY   */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,   */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE      */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                 */
+/**************************************************************************/
+
+#include "property_info.h"
+#include "core/variant/typed_array.h"
+
+Variant::Type PropertyInfo::type::from_variant(const Variant &p_variant) {
+	return (Variant::Type)(int)p_variant;
+}
+
+PropertyHint PropertyInfo::hint::from_variant(const Variant &p_variant) {
+	return (PropertyHint)(int)p_variant;
+}
+
+PropertyInfo::operator Dictionary() const {
+	Dictionary d;
+	d["name"] = name;
+	d["class_name"] = class_name;
+	d["type"] = type;
+	d["hint"] = hint;
+	d["hint_string"] = hint_string;
+	d["usage"] = usage;
+	return d;
+}
+
+PropertyInfo PropertyInfo::from_dict(const Dictionary &p_dict) {
+	PropertyInfo pi;
+
+	if (p_dict.has("type")) {
+		pi.type = Variant::Type(int(p_dict["type"]));
+	}
+
+	if (p_dict.has("name")) {
+		pi.name = p_dict["name"];
+	}
+
+	if (p_dict.has("class_name")) {
+		pi.class_name = p_dict["class_name"];
+	}
+
+	if (p_dict.has("hint")) {
+		pi.hint = PropertyHint(int(p_dict["hint"]));
+	}
+
+	if (p_dict.has("hint_string")) {
+		pi.hint_string = p_dict["hint_string"];
+	}
+
+	if (p_dict.has("usage")) {
+		pi.usage = p_dict["usage"];
+	}
+
+	return pi;
+}
+
+TypedArray<Dictionary> convert_property_list(const List<PropertyInfo> *p_list) {
+	TypedArray<Dictionary> va;
+	for (const List<PropertyInfo>::Element *E = p_list->front(); E; E = E->next()) {
+		va.push_back(Dictionary(E->get()));
+	}
+
+	return va;
+}
diff --git a/core/object/property_info.h b/core/object/property_info.h
new file mode 100644
index 000000000000..a6c014673fdb
--- /dev/null
+++ b/core/object/property_info.h
@@ -0,0 +1,176 @@
+/**************************************************************************/
+/*  property_info.h                                                       */
+/**************************************************************************/
+/*                         This file is part of:                          */
+/*                             GODOT ENGINE                               */
+/*                        https://godotengine.org                         */
+/**************************************************************************/
+/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
+/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur.                  */
+/*                                                                        */
+/* Permission is hereby granted, free of charge, to any person obtaining  */
+/* a copy of this software and associated documentation files (the        */
+/* "Software"), to deal in the Software without restriction, including    */
+/* without limitation the rights to use, copy, modify, merge, publish,    */
+/* distribute, sublicense, and/or sell copies of the Software, and to     */
+/* permit persons to whom the Software is furnished to do so, subject to  */
+/* the following conditions:                                              */
+/*                                                                        */
+/* The above copyright notice and this permission notice shall be         */
+/* included in all copies or substantial portions of the Software.        */
+/*                                                                        */
+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,        */
+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF     */
+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. */
+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY   */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,   */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE      */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                 */
+/**************************************************************************/
+
+#ifndef PROPERTY_INFO_H
+#define PROPERTY_INFO_H
+
+#include "core/extension/gdextension_interface.h"
+#include "core/variant/struct_generator.h"
+#include "core/variant/variant.h"
+
+enum PropertyHint {
+	PROPERTY_HINT_NONE, ///< no hint provided.
+	PROPERTY_HINT_RANGE, ///< hint_text = "min,max[,step][,or_greater][,or_less][,hide_slider][,radians_as_degrees][,degrees][,exp][,suffix:<keyword>] range.
+	PROPERTY_HINT_ENUM, ///< hint_text= "val1,val2,val3,etc"
+	PROPERTY_HINT_ENUM_SUGGESTION, ///< hint_text= "val1,val2,val3,etc"
+	PROPERTY_HINT_EXP_EASING, /// exponential easing function (Math::ease) use "attenuation" hint string to revert (flip h), "positive_only" to exclude in-out and out-in. (ie: "attenuation,positive_only")
+	PROPERTY_HINT_LINK,
+	PROPERTY_HINT_FLAGS, ///< hint_text= "flag1,flag2,etc" (as bit flags)
+	PROPERTY_HINT_LAYERS_2D_RENDER,
+	PROPERTY_HINT_LAYERS_2D_PHYSICS,
+	PROPERTY_HINT_LAYERS_2D_NAVIGATION,
+	PROPERTY_HINT_LAYERS_3D_RENDER,
+	PROPERTY_HINT_LAYERS_3D_PHYSICS,
+	PROPERTY_HINT_LAYERS_3D_NAVIGATION,
+	PROPERTY_HINT_FILE, ///< a file path must be passed, hint_text (optionally) is a filter "*.png,*.wav,*.doc,"
+	PROPERTY_HINT_DIR, ///< a directory path must be passed
+	PROPERTY_HINT_GLOBAL_FILE, ///< a file path must be passed, hint_text (optionally) is a filter "*.png,*.wav,*.doc,"
+	PROPERTY_HINT_GLOBAL_DIR, ///< a directory path must be passed
+	PROPERTY_HINT_RESOURCE_TYPE, ///< a resource object type
+	PROPERTY_HINT_MULTILINE_TEXT, ///< used for string properties that can contain multiple lines
+	PROPERTY_HINT_EXPRESSION, ///< used for string properties that can contain multiple lines
+	PROPERTY_HINT_PLACEHOLDER_TEXT, ///< used to set a placeholder text for string properties
+	PROPERTY_HINT_COLOR_NO_ALPHA, ///< used for ignoring alpha component when editing a color
+	PROPERTY_HINT_OBJECT_ID,
+	PROPERTY_HINT_TYPE_STRING, ///< a type string, the hint is the base type to choose
+	PROPERTY_HINT_NODE_PATH_TO_EDITED_NODE, // Deprecated.
+	PROPERTY_HINT_OBJECT_TOO_BIG, ///< object is too big to send
+	PROPERTY_HINT_NODE_PATH_VALID_TYPES,
+	PROPERTY_HINT_SAVE_FILE, ///< a file path must be passed, hint_text (optionally) is a filter "*.png,*.wav,*.doc,". This opens a save dialog
+	PROPERTY_HINT_GLOBAL_SAVE_FILE, ///< a file path must be passed, hint_text (optionally) is a filter "*.png,*.wav,*.doc,". This opens a save dialog
+	PROPERTY_HINT_INT_IS_OBJECTID, // Deprecated.
+	PROPERTY_HINT_INT_IS_POINTER,
+	PROPERTY_HINT_ARRAY_TYPE,
+	PROPERTY_HINT_LOCALE_ID,
+	PROPERTY_HINT_LOCALIZABLE_STRING,
+	PROPERTY_HINT_NODE_TYPE, ///< a node object type
+	PROPERTY_HINT_HIDE_QUATERNION_EDIT, /// Only Node3D::transform should hide the quaternion editor.
+	PROPERTY_HINT_PASSWORD,
+	PROPERTY_HINT_LAYERS_AVOIDANCE,
+	PROPERTY_HINT_DICTIONARY_TYPE,
+	PROPERTY_HINT_TOOL_BUTTON,
+	PROPERTY_HINT_MAX,
+};
+
+enum PropertyUsageFlags {
+	PROPERTY_USAGE_NONE = 0,
+	PROPERTY_USAGE_STORAGE = 1 << 1,
+	PROPERTY_USAGE_EDITOR = 1 << 2,
+	PROPERTY_USAGE_INTERNAL = 1 << 3,
+	PROPERTY_USAGE_CHECKABLE = 1 << 4, // Used for editing global variables.
+	PROPERTY_USAGE_CHECKED = 1 << 5, // Used for editing global variables.
+	PROPERTY_USAGE_GROUP = 1 << 6, // Used for grouping props in the editor.
+	PROPERTY_USAGE_CATEGORY = 1 << 7,
+	PROPERTY_USAGE_SUBGROUP = 1 << 8,
+	PROPERTY_USAGE_CLASS_IS_BITFIELD = 1 << 9,
+	PROPERTY_USAGE_NO_INSTANCE_STATE = 1 << 10,
+	PROPERTY_USAGE_RESTART_IF_CHANGED = 1 << 11,
+	PROPERTY_USAGE_SCRIPT_VARIABLE = 1 << 12,
+	PROPERTY_USAGE_STORE_IF_NULL = 1 << 13,
+	PROPERTY_USAGE_UPDATE_ALL_IF_MODIFIED = 1 << 14,
+	PROPERTY_USAGE_SCRIPT_DEFAULT_VALUE = 1 << 15, // Deprecated.
+	PROPERTY_USAGE_CLASS_IS_ENUM = 1 << 16,
+	PROPERTY_USAGE_NIL_IS_VARIANT = 1 << 17,
+	PROPERTY_USAGE_ARRAY = 1 << 18, // Used in the inspector to group properties as elements of an array.
+	PROPERTY_USAGE_ALWAYS_DUPLICATE = 1 << 19, // When duplicating a resource, always duplicate, even with subresource duplication disabled.
+	PROPERTY_USAGE_NEVER_DUPLICATE = 1 << 20, // When duplicating a resource, never duplicate, even with subresource duplication enabled.
+	PROPERTY_USAGE_HIGH_END_GFX = 1 << 21,
+	PROPERTY_USAGE_NODE_PATH_FROM_SCENE_ROOT = 1 << 22,
+	PROPERTY_USAGE_RESOURCE_NOT_PERSISTENT = 1 << 23,
+	PROPERTY_USAGE_KEYING_INCREMENTS = 1 << 24, // Used in inspector to increment property when keyed in animation player.
+	PROPERTY_USAGE_DEFERRED_SET_RESOURCE = 1 << 25, // Deprecated.
+	PROPERTY_USAGE_EDITOR_INSTANTIATE_OBJECT = 1 << 26, // For Object properties, instantiate them when creating in editor.
+	PROPERTY_USAGE_EDITOR_BASIC_SETTING = 1 << 27, //for project or editor settings, show when basic settings are selected.
+	PROPERTY_USAGE_READ_ONLY = 1 << 28, // Mark a property as read-only in the inspector.
+	PROPERTY_USAGE_SECRET = 1 << 29, // Export preset credentials that should be stored separately from the rest of the export config.
+
+	PROPERTY_USAGE_DEFAULT = PROPERTY_USAGE_STORAGE | PROPERTY_USAGE_EDITOR,
+	PROPERTY_USAGE_NO_EDITOR = PROPERTY_USAGE_STORAGE,
+};
+
+struct PropertyInfo {
+	STRUCT_DECLARE(PropertyInfo);
+	STRUCT_MEMBER_PRIMITIVE(String, name, String());
+	STRUCT_MEMBER_PRIMITIVE(StringName, class_name, StringName());
+	STRUCT_MEMBER_PRIMITIVE_FROM(Variant::Type, type, Variant::NIL);
+	STRUCT_MEMBER_PRIMITIVE_FROM(PropertyHint, hint, PROPERTY_HINT_NONE);
+	STRUCT_MEMBER_PRIMITIVE(String, hint_string, String());
+	STRUCT_MEMBER_PRIMITIVE(uint32_t, usage, PROPERTY_USAGE_DEFAULT);
+	STRUCT_LAYOUT_OWNER(Object, PropertyInfo, struct name, struct class_name, struct type, struct hint, struct hint_string, struct usage);
+
+	_FORCE_INLINE_ PropertyInfo added_usage(uint32_t p_fl) const {
+		PropertyInfo pi = *this;
+		pi.usage |= p_fl;
+		return pi;
+	}
+
+	operator Dictionary() const;
+
+	static PropertyInfo from_dict(const Dictionary &p_dict);
+
+	PropertyInfo() {}
+
+	PropertyInfo(const Variant::Type p_type, const String p_name, const PropertyHint p_hint = PROPERTY_HINT_NONE, const String &p_hint_string = "", const uint32_t p_usage = PROPERTY_USAGE_DEFAULT, const StringName &p_class_name = StringName()) :
+			name(p_name),
+			class_name(p_hint == PROPERTY_HINT_RESOURCE_TYPE ? StringName(p_hint_string) : p_class_name),
+			type(p_type),
+			hint(p_hint),
+			hint_string(p_hint_string),
+			usage(p_usage) {}
+
+	PropertyInfo(const StringName &p_class_name) :
+			class_name(p_class_name),
+			type(Variant::OBJECT) {}
+
+	explicit PropertyInfo(const GDExtensionPropertyInfo &pinfo) :
+			name(*reinterpret_cast<StringName *>(pinfo.name)),
+			class_name(*reinterpret_cast<StringName *>(pinfo.class_name)),
+			type((Variant::Type)pinfo.type),
+			hint((PropertyHint)pinfo.hint),
+			hint_string(*reinterpret_cast<String *>(pinfo.hint_string)),
+			usage(pinfo.usage) {}
+
+	bool operator==(const PropertyInfo &p_info) const {
+		return ((type == p_info.type) &&
+				(name == p_info.name) &&
+				(class_name == p_info.class_name) &&
+				(hint == p_info.hint) &&
+				(hint_string == p_info.hint_string) &&
+				(usage == p_info.usage));
+	}
+
+	bool operator<(const PropertyInfo &p_info) const {
+		return name < p_info.name;
+	}
+};
+
+TypedArray<Dictionary> convert_property_list(const List<PropertyInfo> *p_list);
+
+#endif // PROPERTY_INFO_H
diff --git a/core/string/ustring.cpp b/core/string/ustring.cpp
index 391a203d5b59..7044a74c6c41 100644
--- a/core/string/ustring.cpp
+++ b/core/string/ustring.cpp
@@ -4006,7 +4006,11 @@ String String::format(const Variant &values, const String &placeholder) const {
 
 	if (values.get_type() == Variant::ARRAY) {
 		Array values_arr = values;
-
+		if (const StructInfo *struct_info = values_arr.get_struct_info()) {
+			for (int32_t i = 0; i < struct_info->count; i++) {
+				new_string = new_string.replace(placeholder.replace("_", struct_info->names[i]), values_arr[(int)i]);
+			}
+		}
 		for (int i = 0; i < values_arr.size(); i++) {
 			String i_as_str = String::num_int64(i);
 
diff --git a/core/variant/array.cpp b/core/variant/array.cpp
index 3e62d3dffa87..5a6a27b2d105 100644
--- a/core/variant/array.cpp
+++ b/core/variant/array.cpp
@@ -39,7 +39,9 @@
 #include "core/templates/vector.h"
 #include "core/variant/callable.h"
 #include "core/variant/dictionary.h"
+#include "core/variant/struct.h"
 #include "core/variant/variant.h"
+#include "struct_generator.h"
 
 class ArrayPrivate {
 public:
@@ -47,6 +49,40 @@ class ArrayPrivate {
 	Vector<Variant> array;
 	Variant *read_only = nullptr; // If enabled, a pointer is used to a temporary value that is used to return read-only values.
 	ContainerTypeValidate typed;
+
+	_FORCE_INLINE_ bool is_struct() const {
+		return !typed.is_array_of_structs && typed.struct_info != nullptr;
+	}
+
+	_FORCE_INLINE_ bool is_array_of_structs() const {
+		return typed.is_array_of_structs;
+	}
+
+	_FORCE_INLINE_ bool is_struct_array() const {
+		return false; // TODO: not supported yet
+	}
+
+	_FORCE_INLINE_ int32_t find_member_index(const StringName &p_member) const {
+		// TODO: is there a better way to do this than linear search?
+		ERR_FAIL_NULL_V_MSG(typed.struct_info, -1, "Can only find member on a Struct");
+		for (int32_t i = 0; i < typed.struct_info->count; i++) {
+			if (p_member == typed.struct_info->names[i]) {
+				return i;
+			}
+		}
+		return -1;
+	}
+
+	_FORCE_INLINE_ int32_t rfind_member_index(const StringName &p_member) const {
+		// TODO: is there a better way to do this than linear search?
+		ERR_FAIL_NULL_V_MSG(typed.struct_info, -1, "Can only find member on a Struct");
+		for (int32_t i = typed.struct_info->count - 1; i >= 0; i--) {
+			if (p_member == typed.struct_info->names[i]) {
+				return i;
+			}
+		}
+		return -1;
+	}
 };
 
 void Array::_ref(const Array &p_from) const {
@@ -218,7 +254,7 @@ void Array::assign(const Array &p_array) {
 	const ContainerTypeValidate &typed = _p->typed;
 	const ContainerTypeValidate &source_typed = p_array._p->typed;
 
-	if (typed == source_typed || typed.type == Variant::NIL || (source_typed.type == Variant::OBJECT && typed.can_reference(source_typed))) {
+	if (typed.can_reference(source_typed)) {
 		// from same to same or
 		// from anything to variants or
 		// from subclasses to base classes
@@ -234,8 +270,9 @@ void Array::assign(const Array &p_array) {
 		// from base classes to subclasses
 		for (int i = 0; i < size; i++) {
 			const Variant &element = source[i];
-			if (element.get_type() != Variant::NIL && (element.get_type() != Variant::OBJECT || !typed.validate_object(element, "assign"))) {
-				ERR_FAIL_MSG(vformat(R"(Unable to convert array index %d from "%s" to "%s".)", i, Variant::get_type_name(element.get_type()), Variant::get_type_name(typed.type)));
+			const Variant::Type type = source[i].get_type();
+			if (type != Variant::NIL && (type != Variant::OBJECT || !typed.validate_object(element, "assign"))) {
+				ERR_FAIL_MSG(vformat(R"(Unable to convert array index %d from "%s" to "%s".)", i, Variant::get_type_name(type), Variant::get_type_name(typed.type)));
 			}
 		}
 		_p->array = p_array._p->array;
@@ -249,6 +286,21 @@ void Array::assign(const Array &p_array) {
 	array.resize(size);
 	Variant *data = array.ptrw();
 
+	if (is_struct()) {
+		if (source_typed.type != Variant::NIL) {
+			ERR_FAIL_COND_MSG(typed != source_typed, "Attempted to assign a typed array to a struct.");
+			_p->array = p_array._p->array;
+			return;
+		}
+		for (int i = 0; i < size; i++) {
+			ValidatedVariant validated = typed.validate_struct_member(source[i], i, "assign");
+			ERR_FAIL_COND_MSG(!validated.valid, vformat(R"(Unable to convert array index %i from "%s" to "%s".)", i, Variant::get_type_name(source[i].get_type()), Variant::get_type_name(typed.type)));
+			array.write[i] = validated.value;
+		}
+		_p->array = array;
+		return;
+	}
+
 	if (source_typed.type == Variant::NIL && typed.type != Variant::OBJECT) {
 		// from variants to primitives
 		for (int i = 0; i < size; i++) {
@@ -281,17 +333,21 @@ void Array::assign(const Array &p_array) {
 
 void Array::push_back(const Variant &p_value) {
 	ERR_FAIL_COND_MSG(_p->read_only, "Array is in read-only state.");
-	Variant value = p_value;
-	ERR_FAIL_COND(!_p->typed.validate(value, "push_back"));
-	_p->array.push_back(value);
+	ERR_FAIL_COND_MSG(_p->is_struct(), "Array is a struct."); // TODO: better error message
+	ValidatedVariant validated = _p->typed.validate(p_value, "push_back");
+	ERR_FAIL_COND(!validated.valid);
+	_p->array.push_back(validated.value);
 }
 
 void Array::append_array(const Array &p_array) {
 	ERR_FAIL_COND_MSG(_p->read_only, "Array is in read-only state.");
+	ERR_FAIL_COND_MSG(_p->is_struct(), "Array is a struct."); // TODO: better error message
 
 	Vector<Variant> validated_array = p_array._p->array;
 	for (int i = 0; i < validated_array.size(); ++i) {
-		ERR_FAIL_COND(!_p->typed.validate(validated_array.write[i], "append_array"));
+		ValidatedVariant validated = _p->typed.validate(validated_array[i], "append_array");
+		validated_array.write[i] = validated.value;
+		ERR_FAIL_COND(!validated.valid);
 	}
 
 	_p->array.append_array(validated_array);
@@ -299,36 +355,48 @@ void Array::append_array(const Array &p_array) {
 
 Error Array::resize(int p_new_size) {
 	ERR_FAIL_COND_V_MSG(_p->read_only, ERR_LOCKED, "Array is in read-only state.");
-	Variant::Type &variant_type = _p->typed.type;
+	ERR_FAIL_COND_V_MSG(_p->is_struct(), ERR_LOCKED, "Array is a struct."); // TODO: better error message
+
 	int old_size = _p->array.size();
+	Variant::Type &variant_type = _p->typed.type;
 	Error err = _p->array.resize_zeroed(p_new_size);
-	if (!err && variant_type != Variant::NIL && variant_type != Variant::OBJECT) {
+	if (err || variant_type == Variant::NIL || variant_type == Variant::OBJECT) {
+		return err;
+	}
+	if (const StructInfo *info = _p->typed.struct_info) { // Typed array of structs
 		for (int i = old_size; i < p_new_size; i++) {
-			VariantInternal::initialize(&_p->array.write[i], variant_type);
+			_p->array.write[i] = Array(*info);
 		}
+		return err;
+	}
+	for (int i = old_size; i < p_new_size; i++) {
+		VariantInternal::initialize(&_p->array.write[i], variant_type);
 	}
 	return err;
 }
 
 Error Array::insert(int p_pos, const Variant &p_value) {
 	ERR_FAIL_COND_V_MSG(_p->read_only, ERR_LOCKED, "Array is in read-only state.");
-	Variant value = p_value;
-	ERR_FAIL_COND_V(!_p->typed.validate(value, "insert"), ERR_INVALID_PARAMETER);
-	return _p->array.insert(p_pos, value);
+	ERR_FAIL_COND_V_MSG(_p->is_struct(), ERR_LOCKED, "Array is a struct."); // TODO: better error message
+	ValidatedVariant validated = _p->typed.validate(p_value, "insert");
+	ERR_FAIL_COND_V(!validated.valid, ERR_INVALID_PARAMETER);
+	return _p->array.insert(p_pos, validated.value);
 }
 
 void Array::fill(const Variant &p_value) {
 	ERR_FAIL_COND_MSG(_p->read_only, "Array is in read-only state.");
-	Variant value = p_value;
-	ERR_FAIL_COND(!_p->typed.validate(value, "fill"));
-	_p->array.fill(value);
+	ERR_FAIL_COND_MSG(_p->is_struct(), "Array is a struct."); // TODO: better error message
+	ValidatedVariant validated = _p->typed.validate(p_value, "fill");
+	ERR_FAIL_COND(!validated.valid);
+	_p->array.fill(validated.value);
 }
 
 void Array::erase(const Variant &p_value) {
 	ERR_FAIL_COND_MSG(_p->read_only, "Array is in read-only state.");
-	Variant value = p_value;
-	ERR_FAIL_COND(!_p->typed.validate(value, "erase"));
-	_p->array.erase(value);
+	ERR_FAIL_COND_MSG(_p->is_struct(), "Array is a struct."); // TODO: better error message
+	ValidatedVariant validated = _p->typed.validate(p_value, "erase");
+	ERR_FAIL_COND(!validated.valid);
+	_p->array.erase(validated.value);
 }
 
 Variant Array::front() const {
@@ -350,8 +418,15 @@ int Array::find(const Variant &p_value, int p_from) const {
 	if (_p->array.size() == 0) {
 		return -1;
 	}
-	Variant value = p_value;
-	ERR_FAIL_COND_V(!_p->typed.validate(value, "find"), -1);
+	if (is_struct()) {
+		ERR_FAIL_COND_V_MSG(!p_value.is_string(), -1, "Can only find a String or StringName in a Struct.");
+		StringName member = p_value;
+		return find_member(member);
+	}
+
+	ValidatedVariant validated = _p->typed.validate(p_value, "find");
+
+	ERR_FAIL_COND_V(!validated.valid, -1);
 
 	int ret = -1;
 
@@ -360,7 +435,7 @@ int Array::find(const Variant &p_value, int p_from) const {
 	}
 
 	for (int i = p_from; i < size(); i++) {
-		if (StringLikeVariantComparator::compare(_p->array[i], value)) {
+		if (StringLikeVariantComparator::compare(_p->array[i], validated.value)) {
 			ret = i;
 			break;
 		}
@@ -401,8 +476,14 @@ int Array::rfind(const Variant &p_value, int p_from) const {
 	if (_p->array.size() == 0) {
 		return -1;
 	}
-	Variant value = p_value;
-	ERR_FAIL_COND_V(!_p->typed.validate(value, "rfind"), -1);
+	if (is_struct()) {
+		ERR_FAIL_COND_V_MSG(!p_value.is_string(), -1, "Can only find a String or StringName in a Struct.");
+		StringName member = p_value;
+		return rfind_member(member);
+	}
+
+	ValidatedVariant validated = _p->typed.validate(p_value, "rfind");
+	ERR_FAIL_COND_V(!validated.valid, -1);
 
 	if (p_from < 0) {
 		// Relative offset from the end
@@ -414,7 +495,7 @@ int Array::rfind(const Variant &p_value, int p_from) const {
 	}
 
 	for (int i = p_from; i >= 0; i--) {
-		if (StringLikeVariantComparator::compare(_p->array[i], value)) {
+		if (StringLikeVariantComparator::compare(_p->array[i], validated.value)) {
 			return i;
 		}
 	}
@@ -458,15 +539,15 @@ int Array::rfind_custom(const Callable &p_callable, int p_from) const {
 }
 
 int Array::count(const Variant &p_value) const {
-	Variant value = p_value;
-	ERR_FAIL_COND_V(!_p->typed.validate(value, "count"), 0);
+	ValidatedVariant validated = _p->typed.validate(p_value, "count");
+	ERR_FAIL_COND_V(!validated.valid, 0);
 	if (_p->array.size() == 0) {
 		return 0;
 	}
 
 	int amount = 0;
 	for (int i = 0; i < _p->array.size(); i++) {
-		if (StringLikeVariantComparator::compare(_p->array[i], value)) {
+		if (StringLikeVariantComparator::compare(_p->array[i], validated.value)) {
 			amount++;
 		}
 	}
@@ -475,36 +556,86 @@ int Array::count(const Variant &p_value) const {
 }
 
 bool Array::has(const Variant &p_value) const {
-	Variant value = p_value;
-	ERR_FAIL_COND_V(!_p->typed.validate(value, "use 'has'"), false);
+	ValidatedVariant validated = _p->typed.validate(p_value, "use 'has'");
+	ERR_FAIL_COND_V(!validated.valid, false);
 
-	return find(value) != -1;
+	return find(validated.value) != -1;
 }
 
 void Array::remove_at(int p_pos) {
 	ERR_FAIL_COND_MSG(_p->read_only, "Array is in read-only state.");
+	ERR_FAIL_COND_MSG(_p->is_struct(), "Array is a struct."); // TODO: better error message
 	_p->array.remove_at(p_pos);
 }
 
 void Array::set(int p_idx, const Variant &p_value) {
 	ERR_FAIL_COND_MSG(_p->read_only, "Array is in read-only state.");
-	Variant value = p_value;
-	ERR_FAIL_COND(!_p->typed.validate(value, "set"));
-
-	operator[](p_idx) = value;
+	ERR_FAIL_COND_MSG(_p->is_struct() && (p_idx >= size()), "Array is a struct."); // TODO: better error message
+	ValidatedVariant validated = _p->is_struct() ? _p->typed.validate_struct_member(p_value, p_idx, "set") : _p->typed.validate(p_value, "set");
+	ERR_FAIL_COND(!validated.valid); // TODO: wrong error message
+	operator[](p_idx) = validated.value;
 }
 
 const Variant &Array::get(int p_idx) const {
 	return operator[](p_idx);
 }
 
+void Array::set_named(const StringName &p_member, const Variant &p_value) {
+	CRASH_COND_MSG(!_p->is_struct(), "Array is not a struct"); // TODO: should this crash?
+	int32_t index = _p->find_member_index(p_member);
+	CRASH_COND_MSG(index < 0, vformat("member '%s' not found", p_member));
+	set(index, p_value);
+}
+
+Variant &Array::get_named(const StringName &p_member) {
+	CRASH_COND_MSG(!_p->is_struct(), "Array is not a struct"); // TODO: should this crash?
+	int32_t index = _p->find_member_index(p_member);
+	CRASH_COND_MSG(index < 0, vformat("member '%s' not found", p_member));
+	return operator[](index);
+}
+
+const Variant &Array::get_named(const StringName &p_member) const {
+	CRASH_COND_MSG(!_p->is_struct(), "Array is not a struct"); // TODO: should this crash?
+	int32_t index = _p->find_member_index(p_member);
+	CRASH_COND_MSG(index < 0, vformat("member '%s' not found", p_member));
+	return get(index);
+}
+
+const StringName Array::get_member_name(int p_idx) const {
+	// TODO: probably need some error handling here.
+	return _p->typed.struct_info->names[p_idx];
+}
+
+int Array::find_member(const StringName &p_member) const {
+	return _p->find_member_index(p_member);
+}
+
+int Array::rfind_member(const StringName &p_member) const {
+	return _p->rfind_member_index(p_member);
+}
+
+const Variant *Array::getptr(const StringName &p_member) const {
+	int index = _p->find_member_index(p_member);
+	if (index < 0) {
+		return nullptr;
+	}
+	return &get(index);
+}
+
 Array Array::duplicate(bool p_deep) const {
 	return recursive_duplicate(p_deep, 0);
 }
 
 Array Array::recursive_duplicate(bool p_deep, int recursion_count) const {
 	Array new_arr;
-	new_arr._p->typed = _p->typed;
+	if (const StructInfo *struct_info = get_struct_info()) {
+		new_arr.set_struct(*struct_info, is_array_of_structs());
+	} else {
+		new_arr._p->typed = _p->typed;
+		if (p_deep) {
+			new_arr.resize(size());
+		}
+	}
 
 	if (recursion_count > MAX_RECURSION) {
 		ERR_PRINT("Max recursion reached");
@@ -514,7 +645,6 @@ Array Array::recursive_duplicate(bool p_deep, int recursion_count) const {
 	if (p_deep) {
 		recursion_count++;
 		int element_count = size();
-		new_arr.resize(element_count);
 		for (int i = 0; i < element_count; i++) {
 			new_arr[i] = get(i).recursive_duplicate(true, recursion_count);
 		}
@@ -692,16 +822,19 @@ struct _ArrayVariantSort {
 
 void Array::sort() {
 	ERR_FAIL_COND_MSG(_p->read_only, "Array is in read-only state.");
+	ERR_FAIL_COND_MSG(_p->is_struct(), "Array is a struct."); // TODO: better error message
 	_p->array.sort_custom<_ArrayVariantSort>();
 }
 
 void Array::sort_custom(const Callable &p_callable) {
 	ERR_FAIL_COND_MSG(_p->read_only, "Array is in read-only state.");
+	ERR_FAIL_COND_MSG(_p->is_struct(), "Array is a struct."); // TODO: better error message
 	_p->array.sort_custom<CallableComparator, true>(p_callable);
 }
 
 void Array::shuffle() {
 	ERR_FAIL_COND_MSG(_p->read_only, "Array is in read-only state.");
+	ERR_FAIL_COND_MSG(_p->is_struct(), "Array is a struct."); // TODO: better error message
 	const int n = _p->array.size();
 	if (n < 2) {
 		return;
@@ -716,33 +849,36 @@ void Array::shuffle() {
 }
 
 int Array::bsearch(const Variant &p_value, bool p_before) const {
-	Variant value = p_value;
-	ERR_FAIL_COND_V(!_p->typed.validate(value, "binary search"), -1);
+	ValidatedVariant validated = _p->typed.validate(p_value, "binary search");
+	ERR_FAIL_COND_V(!validated.valid, -1);
 	SearchArray<Variant, _ArrayVariantSort> avs;
-	return avs.bisect(_p->array.ptrw(), _p->array.size(), value, p_before);
+	return avs.bisect(_p->array.ptrw(), _p->array.size(), validated.value, p_before);
 }
 
 int Array::bsearch_custom(const Variant &p_value, const Callable &p_callable, bool p_before) const {
-	Variant value = p_value;
-	ERR_FAIL_COND_V(!_p->typed.validate(value, "custom binary search"), -1);
+	ValidatedVariant validated = _p->typed.validate(p_value, "custom binary search");
+	ERR_FAIL_COND_V(!validated.valid, -1);
 
-	return _p->array.bsearch_custom<CallableComparator>(value, p_before, p_callable);
+	return _p->array.bsearch_custom<CallableComparator>(validated.value, p_before, p_callable);
 }
 
 void Array::reverse() {
 	ERR_FAIL_COND_MSG(_p->read_only, "Array is in read-only state.");
+	ERR_FAIL_COND_MSG(_p->is_struct(), "Array is a struct."); // TODO: better error message
 	_p->array.reverse();
 }
 
 void Array::push_front(const Variant &p_value) {
 	ERR_FAIL_COND_MSG(_p->read_only, "Array is in read-only state.");
-	Variant value = p_value;
-	ERR_FAIL_COND(!_p->typed.validate(value, "push_front"));
-	_p->array.insert(0, value);
+	ERR_FAIL_COND_MSG(_p->is_struct(), "Array is a struct."); // TODO: better error message
+	ValidatedVariant validated = _p->typed.validate(p_value, "push_front");
+	ERR_FAIL_COND(!validated.valid);
+	_p->array.insert(0, validated.value);
 }
 
 Variant Array::pop_back() {
 	ERR_FAIL_COND_V_MSG(_p->read_only, Variant(), "Array is in read-only state.");
+	ERR_FAIL_COND_V_MSG(_p->is_struct(), Variant(), "Array is a struct."); // TODO: better error message
 	if (!_p->array.is_empty()) {
 		const int n = _p->array.size() - 1;
 		const Variant ret = _p->array.get(n);
@@ -754,6 +890,7 @@ Variant Array::pop_back() {
 
 Variant Array::pop_front() {
 	ERR_FAIL_COND_V_MSG(_p->read_only, Variant(), "Array is in read-only state.");
+	ERR_FAIL_COND_V_MSG(_p->is_struct(), Variant(), "Array is a struct."); // TODO: better error message
 	if (!_p->array.is_empty()) {
 		const Variant ret = _p->array.get(0);
 		_p->array.remove_at(0);
@@ -764,6 +901,7 @@ Variant Array::pop_front() {
 
 Variant Array::pop_at(int p_pos) {
 	ERR_FAIL_COND_V_MSG(_p->read_only, Variant(), "Array is in read-only state.");
+	ERR_FAIL_COND_V_MSG(_p->is_struct(), Variant(), "Array is a struct."); // TODO: better error message
 	if (_p->array.is_empty()) {
 		// Return `null` without printing an error to mimic `pop_back()` and `pop_front()` behavior.
 		return Variant();
@@ -839,29 +977,67 @@ const void *Array::id() const {
 Array::Array(const Array &p_from, uint32_t p_type, const StringName &p_class_name, const Variant &p_script) {
 	_p = memnew(ArrayPrivate);
 	_p->refcount.init();
-	set_typed(p_type, p_class_name, p_script);
+	initialize_typed(p_type, p_class_name, p_script);
 	assign(p_from);
 }
 
+Error Array::validate_set_type() {
+	// TODO: better return values?
+	ERR_FAIL_COND_V_MSG(_p->read_only, ERR_LOCKED, "Array is in read-only state.");
+	ERR_FAIL_COND_V_MSG(_p->is_struct(), ERR_LOCKED, "Array is a struct."); // TODO: better error message
+	ERR_FAIL_COND_V_MSG(_p->array.size() > 0, ERR_LOCKED, "Type can only be set when array is empty.");
+	ERR_FAIL_COND_V_MSG(_p->refcount.get() > 1, ERR_LOCKED, "Type can only be set when array has no more than one user.");
+	ERR_FAIL_COND_V_MSG(_p->typed.type != Variant::NIL, ERR_LOCKED, "Type can only be set once.");
+	return OK;
+}
+
 void Array::set_typed(uint32_t p_type, const StringName &p_class_name, const Variant &p_script) {
-	ERR_FAIL_COND_MSG(_p->read_only, "Array is in read-only state.");
-	ERR_FAIL_COND_MSG(_p->array.size() > 0, "Type can only be set when array is empty.");
-	ERR_FAIL_COND_MSG(_p->refcount.get() > 1, "Type can only be set when array has no more than one user.");
-	ERR_FAIL_COND_MSG(_p->typed.type != Variant::NIL, "Type can only be set once.");
-	ERR_FAIL_COND_MSG(p_class_name != StringName() && p_type != Variant::OBJECT, "Class names can only be set for type OBJECT");
+	if (validate_set_type() != OK) {
+		return;
+	}
+	ERR_FAIL_COND_MSG(p_class_name != StringName() && !(p_type == Variant::OBJECT || p_type == Variant::ARRAY), "Class names can only be set for type OBJECT or ARRAY");
 	Ref<Script> script = p_script;
 	ERR_FAIL_COND_MSG(script.is_valid() && p_class_name == StringName(), "Script class can only be set together with base class name");
 
-	_p->typed.type = Variant::Type(p_type);
-	_p->typed.class_name = p_class_name;
-	_p->typed.script = script;
-	_p->typed.where = "TypedArray";
+	_p->typed = ContainerTypeValidate(Variant::Type(p_type), p_class_name, script, "TypedArray");
+}
+
+void Array::set_struct(const StructInfo &p_struct_info, bool p_is_array_of_structs) {
+	if (validate_set_type() != OK) {
+		return;
+	}
+	const int32_t size = p_struct_info.count;
+	_p->array.resize(size);
+	_p->typed = ContainerTypeValidate(p_struct_info, p_is_array_of_structs);
+}
+
+void Array::initialize_typed(uint32_t p_type, const StringName &p_class_name, const Variant &p_script) {
+	ERR_FAIL_COND_MSG(p_class_name != StringName() && !(p_type == Variant::OBJECT || p_type == Variant::ARRAY), "Class names can only be set for type OBJECT or ARRAY");
+	Ref<Script> script = p_script;
+	ERR_FAIL_COND_MSG(script.is_valid() && p_class_name == StringName(), "Script class can only be set together with base class name");
+
+	_p->typed = ContainerTypeValidate(Variant::Type(p_type), p_class_name, script, "TypedArray");
+}
+
+void Array::initialize_struct_type(const StructInfo &p_struct_info, bool is_array_of_structs) {
+	if (!is_array_of_structs) {
+		_p->array.resize(p_struct_info.count);
+	}
+	_p->typed = ContainerTypeValidate(p_struct_info, is_array_of_structs);
 }
 
 bool Array::is_typed() const {
 	return _p->typed.type != Variant::NIL;
 }
 
+bool Array::is_struct() const {
+	return _p->is_struct();
+}
+
+bool Array::is_array_of_structs() const {
+	return _p->is_array_of_structs();
+}
+
 bool Array::is_same_typed(const Array &p_other) const {
 	return _p->typed == p_other._p->typed;
 }
@@ -882,6 +1058,10 @@ Variant Array::get_typed_script() const {
 	return _p->typed.script;
 }
 
+const StructInfo *Array::get_struct_info() const {
+	return _p->typed.struct_info;
+}
+
 Array Array::create_read_only() {
 	Array array;
 	array.make_read_only();
@@ -903,6 +1083,38 @@ Array::Array(const Array &p_from) {
 	_ref(p_from);
 }
 
+Array::Array(const Array &p_from, const StructInfo &p_struct_info) {
+	_p = memnew(ArrayPrivate);
+	_p->refcount.init(); // TODO: should this be _ref(p_from)?
+
+	initialize_struct_type(p_struct_info, p_from.is_array_of_structs());
+	assign(p_from);
+}
+
+Array::Array(const Dictionary &p_from, const StructInfo &p_struct_info) {
+	_p = memnew(ArrayPrivate);
+	_p->refcount.init(); // TODO: should this be _ref(p_from)?
+
+	initialize_struct_type(p_struct_info, false);
+	Variant *pw = _p->array.ptrw();
+	for (int32_t i = 0; i < p_struct_info.count; i++) {
+		pw[i] = p_from.has(p_struct_info.names[i]) ? p_from[p_struct_info.names[i]] : p_struct_info.default_values[i];
+	}
+}
+
+Array::Array(const StructInfo &p_struct_info, bool is_array_of_structs) {
+	_p = memnew(ArrayPrivate);
+	_p->refcount.init();
+
+	initialize_struct_type(p_struct_info, is_array_of_structs);
+	if (!is_array_of_structs) {
+		Variant *pw = _p->array.ptrw();
+		for (int32_t i = 0; i < p_struct_info.count; i++) {
+			pw[i] = p_struct_info.default_values[i].duplicate(true);
+		}
+	}
+}
+
 Array::Array() {
 	_p = memnew(ArrayPrivate);
 	_p->refcount.init();
diff --git a/core/variant/array.h b/core/variant/array.h
index 6c3bae6ccb35..40f05abe2546 100644
--- a/core/variant/array.h
+++ b/core/variant/array.h
@@ -40,6 +40,12 @@ class ArrayPrivate;
 class Object;
 class StringName;
 class Callable;
+template <typename T>
+class Vector;
+struct StructMember;
+struct ContainerTypeValidate;
+struct StructInfo;
+class Dictionary;
 
 class Array {
 	mutable ArrayPrivate *_p;
@@ -118,6 +124,14 @@ class Array {
 	void set(int p_idx, const Variant &p_value);
 	const Variant &get(int p_idx) const;
 
+	void set_named(const StringName &p_member, const Variant &p_value);
+	Variant &get_named(const StringName &p_member);
+	const Variant &get_named(const StringName &p_member) const; // TODO: should be & return?
+	const StringName get_member_name(int p_idx) const;
+	int find_member(const StringName &p_member) const;
+	int rfind_member(const StringName &p_member) const;
+	const Variant *getptr(const StringName &p_member) const;
+
 	int size() const;
 	bool is_empty() const;
 	void clear();
@@ -185,13 +199,24 @@ class Array {
 
 	const void *id() const;
 
+	Error validate_set_type();
 	void set_typed(uint32_t p_type, const StringName &p_class_name, const Variant &p_script);
+	void set_struct(const StructInfo &p_struct_info, bool p_is_array_of_structs = false);
+
+protected:
+	void initialize_typed(uint32_t p_type, const StringName &p_class_name, const Variant &p_script);
+	void initialize_struct_type(const StructInfo &p_struct_info, bool p_is_array_of_structs = false);
+
+public:
 	bool is_typed() const;
+	bool is_struct() const;
+	bool is_array_of_structs() const;
 	bool is_same_typed(const Array &p_other) const;
 	bool is_same_instance(const Array &p_other) const;
 	uint32_t get_typed_builtin() const;
 	StringName get_typed_class_name() const;
 	Variant get_typed_script() const;
+	const StructInfo *get_struct_info() const;
 
 	void make_read_only();
 	bool is_read_only() const;
@@ -199,6 +224,9 @@ class Array {
 
 	Array(const Array &p_base, uint32_t p_type, const StringName &p_class_name, const Variant &p_script);
 	Array(const Array &p_from);
+	Array(const Array &p_from, const StructInfo &p_struct_info);
+	Array(const Dictionary &p_from, const StructInfo &p_struct_info);
+	Array(const StructInfo &p_struct_info, bool p_is_array_of_structs = false);
 	Array();
 	~Array();
 };
diff --git a/core/variant/container_type_validate.h b/core/variant/container_type_validate.h
index 0a23c69cb4bd..30417da435f0 100644
--- a/core/variant/container_type_validate.h
+++ b/core/variant/container_type_validate.h
@@ -32,18 +32,59 @@
 #define CONTAINER_TYPE_VALIDATE_H
 
 #include "core/object/script_language.h"
+#include "core/variant/struct_generator.h"
 #include "core/variant/variant.h"
 
+struct ValidatedVariant {
+	Variant value;
+	bool valid;
+
+	ValidatedVariant(const Variant &p_value, const bool p_valid) {
+		value = p_value;
+		valid = p_valid;
+	}
+};
+
 struct ContainerTypeValidate {
 	Variant::Type type = Variant::NIL;
 	StringName class_name;
 	Ref<Script> script;
+
+	bool is_array_of_structs = false;
+	const StructInfo *struct_info = nullptr; // TODO: if is_array_of_structs == true, then require struct_info != nullptr, but not sure the best way to enforce this.
 	const char *where = "container";
 
+	ContainerTypeValidate() {};
+	ContainerTypeValidate(const Variant::Type p_type, const StringName &p_class_name, const Ref<Script> &p_script, const char *p_where = "container") {
+		type = p_type;
+		class_name = p_class_name;
+		script = p_script;
+		struct_info = nullptr;
+		where = p_where;
+	}
+	ContainerTypeValidate(const StructInfo &p_struct_info, bool p_is_array_of_structs = false) {
+		type = Variant::ARRAY;
+		class_name = p_struct_info.name;
+		script = Ref<Script>();
+		is_array_of_structs = p_is_array_of_structs;
+		struct_info = &p_struct_info;
+		where = p_is_array_of_structs ? "TypedArray" : "Struct";
+	}
+
 	_FORCE_INLINE_ bool can_reference(const ContainerTypeValidate &p_type) const {
+		if (type == Variant::NIL) {
+			return true;
+		}
 		if (type != p_type.type) {
 			return false;
-		} else if (type != Variant::OBJECT) {
+		}
+		if (is_array_of_structs != p_type.is_array_of_structs) {
+			return false;
+		}
+		if (!StructInfo::is_compatible(struct_info, p_type.struct_info)) {
+			return false;
+		}
+		if (type != Variant::OBJECT) {
 			return true;
 		}
 
@@ -62,49 +103,43 @@ struct ContainerTypeValidate {
 		} else if (script != p_type.script && !p_type.script->inherits_script(script)) {
 			return false;
 		}
-
 		return true;
 	}
 
 	_FORCE_INLINE_ bool operator==(const ContainerTypeValidate &p_type) const {
-		return type == p_type.type && class_name == p_type.class_name && script == p_type.script;
+		return type == p_type.type && class_name == p_type.class_name && script == p_type.script && is_array_of_structs == p_type.is_array_of_structs && StructInfo::is_compatible(struct_info, p_type.struct_info);
 	}
 	_FORCE_INLINE_ bool operator!=(const ContainerTypeValidate &p_type) const {
-		return type != p_type.type || class_name != p_type.class_name || script != p_type.script;
+		return type != p_type.type || class_name != p_type.class_name || script != p_type.script || is_array_of_structs != p_type.is_array_of_structs || !StructInfo::is_compatible(struct_info, p_type.struct_info);
 	}
 
-	// Coerces String and StringName into each other and int into float when needed.
-	_FORCE_INLINE_ bool validate(Variant &inout_variant, const char *p_operation = "use") const {
-		if (type == Variant::NIL) {
-			return true;
+	_FORCE_INLINE_ static ValidatedVariant validate_variant_type(const Variant::Type p_type, const Variant &p_variant, const char *p_where, const char *p_operation = "use") {
+		if (p_type == Variant::NIL) {
+			return ValidatedVariant(p_variant, true);
 		}
-
-		if (type != inout_variant.get_type()) {
-			if (inout_variant.get_type() == Variant::NIL && type == Variant::OBJECT) {
-				return true;
-			}
-			if (type == Variant::STRING && inout_variant.get_type() == Variant::STRING_NAME) {
-				inout_variant = String(inout_variant);
-				return true;
-			} else if (type == Variant::STRING_NAME && inout_variant.get_type() == Variant::STRING) {
-				inout_variant = StringName(inout_variant);
-				return true;
-			} else if (type == Variant::FLOAT && inout_variant.get_type() == Variant::INT) {
-				inout_variant = (float)inout_variant;
-				return true;
-			}
-
-			ERR_FAIL_V_MSG(false, "Attempted to " + String(p_operation) + " a variable of type '" + Variant::get_type_name(inout_variant.get_type()) + "' into a " + where + " of type '" + Variant::get_type_name(type) + "'.");
+		if (p_type == p_variant.get_type()) {
+			return ValidatedVariant(p_variant, true);
 		}
-
-		if (type != Variant::OBJECT) {
-			return true;
+		if (p_type == Variant::OBJECT && p_variant.get_type() == Variant::NIL) {
+			return ValidatedVariant(p_variant, true);
 		}
-
-		return validate_object(inout_variant, p_operation);
+		if (p_type == Variant::STRING && p_variant.get_type() == Variant::STRING_NAME) {
+			return ValidatedVariant(String(p_variant), true);
+		}
+		if (p_type == Variant::STRING_NAME && p_variant.get_type() == Variant::STRING) {
+			return ValidatedVariant(StringName(p_variant), true);
+		}
+		if (p_type == Variant::FLOAT && p_variant.get_type() == Variant::INT) {
+			return ValidatedVariant((float)p_variant, true);
+		}
+		ERR_FAIL_V_MSG(ValidatedVariant(p_variant, false), "Attempted to " + String(p_operation) + " a variable of type '" + Variant::get_type_name(p_variant.get_type()) + "' into a " + p_where + " of type '" + Variant::get_type_name(p_type) + "'.");
 	}
 
 	_FORCE_INLINE_ bool validate_object(const Variant &p_variant, const char *p_operation = "use") const {
+		return validate_object(class_name, script, p_variant, where, p_operation);
+	}
+
+	_FORCE_INLINE_ static bool validate_object(const StringName &p_class_name, const Ref<Script> &p_script, const Variant &p_variant, const char *p_where, const char *p_operation = "use") {
 		ERR_FAIL_COND_V(p_variant.get_type() != Variant::OBJECT, false);
 
 #ifdef DEBUG_ENABLED
@@ -113,34 +148,77 @@ struct ContainerTypeValidate {
 			return true; // This is fine, it's null.
 		}
 		Object *object = ObjectDB::get_instance(object_id);
-		ERR_FAIL_NULL_V_MSG(object, false, "Attempted to " + String(p_operation) + " an invalid (previously freed?) object instance into a '" + String(where) + ".");
+		ERR_FAIL_NULL_V_MSG(object, false, "Attempted to " + String(p_operation) + " an invalid (previously freed?) object instance into a '" + String(p_where) + ".");
 #else
 		Object *object = p_variant;
 		if (object == nullptr) {
 			return true; //fine
 		}
 #endif
-		if (class_name == StringName()) {
+		if (p_class_name == StringName()) {
 			return true; // All good, no class type requested.
 		}
 
 		StringName obj_class = object->get_class_name();
-		if (obj_class != class_name) {
-			ERR_FAIL_COND_V_MSG(!ClassDB::is_parent_class(object->get_class_name(), class_name), false, "Attempted to " + String(p_operation) + " an object of type '" + object->get_class() + "' into a " + where + ", which does not inherit from '" + String(class_name) + "'.");
+		if (obj_class != p_class_name) {
+			ERR_FAIL_COND_V_MSG(!ClassDB::is_parent_class(object->get_class_name(), p_class_name), false, "Attempted to " + String(p_operation) + " an object of type '" + object->get_class() + "' into a " + p_where + ", which does not inherit from '" + String(p_class_name) + "'.");
 		}
 
-		if (script.is_null()) {
+		if (p_script.is_null()) {
 			return true; // All good, no script requested.
 		}
 
 		Ref<Script> other_script = object->get_script();
 
 		// Check base script..
-		ERR_FAIL_COND_V_MSG(other_script.is_null(), false, "Attempted to " + String(p_operation) + " an object into a " + String(where) + ", that does not inherit from '" + String(script->get_class_name()) + "'.");
-		ERR_FAIL_COND_V_MSG(!other_script->inherits_script(script), false, "Attempted to " + String(p_operation) + " an object into a " + String(where) + ", that does not inherit from '" + String(script->get_class_name()) + "'.");
+		ERR_FAIL_COND_V_MSG(other_script.is_null(), false, "Attempted to " + String(p_operation) + " an object into a " + String(p_where) + ", that does not inherit from '" + String(p_script->get_class_name()) + "'.");
+		ERR_FAIL_COND_V_MSG(!other_script->inherits_script(p_script), false, "Attempted to " + String(p_operation) + " an object into a " + String(p_where) + ", that does not inherit from '" + String(p_script->get_class_name()) + "'.");
 
 		return true;
 	}
+
+	_FORCE_INLINE_ ValidatedVariant validate(const Variant &p_variant, const char *p_operation = "use") const {
+		// TODO: Ensure !is_struct ?
+		// Coerces String and StringName into each other and int into float when needed.
+		ValidatedVariant ret = ContainerTypeValidate::validate_variant_type(type, p_variant, where, p_operation);
+		if (!ret.valid) {
+			return ret;
+		}
+
+		// Variant types match
+		if (type == Variant::ARRAY) {
+			const Array array = p_variant;
+			if (array.is_struct()) { // validating a struct into a typed array of structs
+				ret.valid = StructInfo::is_compatible(struct_info, array.get_struct_info());
+			} else { // validating a typed array into a typed array of typed arrays (which is currently not supported)
+				ret.valid = class_name == array.get_typed_class_name();
+			}
+		} else if (type == Variant::OBJECT) {
+			ret.valid = validate_object(p_variant, p_operation);
+		}
+		return ret;
+	}
+
+	_FORCE_INLINE_ ValidatedVariant validate_struct_member(const Variant &p_variant, const int p_struct_index, const char *p_operation = "use") const {
+		// TODO: Ensure is_struct and struct_info != nullptr ?
+		CRASH_BAD_INDEX_MSG(p_struct_index, struct_info->count, "Struct tried validation for a non-existent member");
+		const Variant::Type variant_type = struct_info->types[p_struct_index];
+		// Coerces String and StringName into each other and int into float when needed.
+		ValidatedVariant ret = ContainerTypeValidate::validate_variant_type(variant_type, p_variant, where, p_operation);
+		if (!ret.valid) {
+			return ret;
+		}
+
+		// Variant types match
+		if (variant_type == Variant::ARRAY) {
+			const Array array = p_variant;
+			// Valid if (the struct member is itself a struct and the other array is a compatible struct) or (neither the struct member nor the other array are a struct).
+			ret.valid = StructInfo::is_compatible(struct_info->struct_member_infos[p_struct_index], array.get_struct_info());
+		} else if (variant_type == Variant::OBJECT) {
+			ret.valid = validate_object(struct_info->class_names[p_struct_index], Ref<Script>(), p_variant, where, p_operation);
+		}
+		return ret;
+	}
 };
 
 #endif // CONTAINER_TYPE_VALIDATE_H
diff --git a/core/variant/dictionary.cpp b/core/variant/dictionary.cpp
index 2db754438ff1..cffef3c97aed 100644
--- a/core/variant/dictionary.cpp
+++ b/core/variant/dictionary.cpp
@@ -86,31 +86,31 @@ Variant Dictionary::get_value_at_index(int p_index) const {
 // WARNING: This operator does not validate the value type. For scripting/extensions this is
 // done in `variant_setget.cpp`. Consider using `set()` if the data might be invalid.
 Variant &Dictionary::operator[](const Variant &p_key) {
-	Variant key = p_key;
-	if (unlikely(!_p->typed_key.validate(key, "use `operator[]`"))) {
+	ValidatedVariant validated_key = _p->typed_key.validate(p_key, "use `operator[]`");
+	if (unlikely(!validated_key.valid)) {
 		if (unlikely(!_p->typed_fallback)) {
 			_p->typed_fallback = memnew(Variant);
 		}
 		VariantInternal::initialize(_p->typed_fallback, _p->typed_value.type);
 		return *_p->typed_fallback;
 	} else if (unlikely(_p->read_only)) {
-		if (likely(_p->variant_map.has(key))) {
-			*_p->read_only = _p->variant_map[key];
+		if (likely(_p->variant_map.has(validated_key.value))) {
+			*_p->read_only = _p->variant_map[validated_key.value];
 		} else {
 			VariantInternal::initialize(_p->read_only, _p->typed_value.type);
 		}
 		return *_p->read_only;
 	} else {
-		if (unlikely(!_p->variant_map.has(key))) {
-			VariantInternal::initialize(&_p->variant_map[key], _p->typed_value.type);
+		if (unlikely(!_p->variant_map.has(validated_key.value))) {
+			VariantInternal::initialize(&_p->variant_map[validated_key.value], _p->typed_value.type);
 		}
-		return _p->variant_map[key];
+		return _p->variant_map[validated_key.value];
 	}
 }
 
 const Variant &Dictionary::operator[](const Variant &p_key) const {
-	Variant key = p_key;
-	if (unlikely(!_p->typed_key.validate(key, "use `operator[]`"))) {
+	ValidatedVariant validated_key = _p->typed_key.validate(p_key, "use `operator[]`");
+	if (unlikely(!validated_key.valid)) {
 		if (unlikely(!_p->typed_fallback)) {
 			_p->typed_fallback = memnew(Variant);
 		}
@@ -118,16 +118,16 @@ const Variant &Dictionary::operator[](const Variant &p_key) const {
 		return *_p->typed_fallback;
 	} else {
 		// Will not insert key, so no initialization is necessary.
-		return _p->variant_map[key];
+		return _p->variant_map[validated_key.value];
 	}
 }
 
 const Variant *Dictionary::getptr(const Variant &p_key) const {
-	Variant key = p_key;
-	if (unlikely(!_p->typed_key.validate(key, "getptr"))) {
+	ValidatedVariant validated_key = _p->typed_key.validate(p_key, "getptr");
+	if (unlikely(!validated_key.valid)) {
 		return nullptr;
 	}
-	HashMap<Variant, Variant, VariantHasher, StringLikeVariantComparator>::ConstIterator E(_p->variant_map.find(key));
+	HashMap<Variant, Variant, VariantHasher, StringLikeVariantComparator>::ConstIterator E(_p->variant_map.find(validated_key.value));
 	if (!E) {
 		return nullptr;
 	}
@@ -136,11 +136,11 @@ const Variant *Dictionary::getptr(const Variant &p_key) const {
 
 // WARNING: This method does not validate the value type.
 Variant *Dictionary::getptr(const Variant &p_key) {
-	Variant key = p_key;
-	if (unlikely(!_p->typed_key.validate(key, "getptr"))) {
+	ValidatedVariant validated_key = _p->typed_key.validate(p_key, "getptr");
+	if (unlikely(!validated_key.valid)) {
 		return nullptr;
 	}
-	HashMap<Variant, Variant, VariantHasher, StringLikeVariantComparator>::Iterator E(_p->variant_map.find(key));
+	HashMap<Variant, Variant, VariantHasher, StringLikeVariantComparator>::Iterator E(_p->variant_map.find(validated_key.value));
 	if (!E) {
 		return nullptr;
 	}
@@ -153,9 +153,9 @@ Variant *Dictionary::getptr(const Variant &p_key) {
 }
 
 Variant Dictionary::get_valid(const Variant &p_key) const {
-	Variant key = p_key;
-	ERR_FAIL_COND_V(!_p->typed_key.validate(key, "get_valid"), Variant());
-	HashMap<Variant, Variant, VariantHasher, StringLikeVariantComparator>::ConstIterator E(_p->variant_map.find(key));
+	ValidatedVariant validated = _p->typed_key.validate(p_key, "get_valid");
+	ERR_FAIL_COND_V(!validated.valid, Variant());
+	HashMap<Variant, Variant, VariantHasher, StringLikeVariantComparator>::ConstIterator E(_p->variant_map.find(validated.value));
 
 	if (!E) {
 		return Variant();
@@ -164,9 +164,9 @@ Variant Dictionary::get_valid(const Variant &p_key) const {
 }
 
 Variant Dictionary::get(const Variant &p_key, const Variant &p_default) const {
-	Variant key = p_key;
-	ERR_FAIL_COND_V(!_p->typed_key.validate(key, "get"), p_default);
-	const Variant *result = getptr(key);
+	ValidatedVariant validated = _p->typed_key.validate(p_key, "get");
+	ERR_FAIL_COND_V(!validated.valid, p_default);
+	const Variant *result = getptr(validated.value);
 	if (!result) {
 		return p_default;
 	}
@@ -175,25 +175,27 @@ Variant Dictionary::get(const Variant &p_key, const Variant &p_default) const {
 }
 
 Variant Dictionary::get_or_add(const Variant &p_key, const Variant &p_default) {
-	Variant key = p_key;
-	ERR_FAIL_COND_V(!_p->typed_key.validate(key, "get"), p_default);
-	const Variant *result = getptr(key);
-	if (!result) {
-		Variant value = p_default;
-		ERR_FAIL_COND_V(!_p->typed_value.validate(value, "add"), value);
-		operator[](key) = value;
-		return value;
+	ValidatedVariant validated_key = _p->typed_key.validate(p_key, "get");
+	ERR_FAIL_COND_V(!validated_key.valid, p_default);
+	const Variant *result = getptr(validated_key.value);
+
+	if (result) {
+		return *result;
 	}
-	return *result;
+
+	ValidatedVariant validated_default = _p->typed_key.validate(p_default, "add");
+	ERR_FAIL_COND_V(!validated_default.valid, validated_default.value);
+	operator[](validated_key.value) = validated_default.value;
+	return validated_default.value;
 }
 
 bool Dictionary::set(const Variant &p_key, const Variant &p_value) {
 	ERR_FAIL_COND_V_MSG(_p->read_only, false, "Dictionary is in read-only state.");
-	Variant key = p_key;
-	ERR_FAIL_COND_V(!_p->typed_key.validate(key, "set"), false);
-	Variant value = p_value;
-	ERR_FAIL_COND_V(!_p->typed_value.validate(value, "set"), false);
-	_p->variant_map[key] = value;
+	ValidatedVariant validated_key = _p->typed_key.validate(p_key, "set");
+	ERR_FAIL_COND_V(!validated_key.valid, false);
+	ValidatedVariant validated_value = _p->typed_value.validate(p_value, "set");
+	ERR_FAIL_COND_V(!validated_value.valid, false);
+	_p->variant_map[validated_key.value] = validated_value.value;
 	return true;
 }
 
@@ -206,16 +208,16 @@ bool Dictionary::is_empty() const {
 }
 
 bool Dictionary::has(const Variant &p_key) const {
-	Variant key = p_key;
-	ERR_FAIL_COND_V(!_p->typed_key.validate(key, "use 'has'"), false);
+	ValidatedVariant validated = _p->typed_key.validate(p_key, "use 'has'");
+	ERR_FAIL_COND_V(!validated.valid, false);
 	return _p->variant_map.has(p_key);
 }
 
 bool Dictionary::has_all(const Array &p_keys) const {
 	for (int i = 0; i < p_keys.size(); i++) {
-		Variant key = p_keys[i];
-		ERR_FAIL_COND_V(!_p->typed_key.validate(key, "use 'has_all'"), false);
-		if (!has(key)) {
+		ValidatedVariant validated = _p->typed_key.validate(p_keys[i], "use 'has_all'");
+		ERR_FAIL_COND_V(!validated.valid, false);
+		if (!has(validated.value)) {
 			return false;
 		}
 	}
@@ -223,10 +225,10 @@ bool Dictionary::has_all(const Array &p_keys) const {
 }
 
 Variant Dictionary::find_key(const Variant &p_value) const {
-	Variant value = p_value;
-	ERR_FAIL_COND_V(!_p->typed_value.validate(value, "find_key"), Variant());
+	ValidatedVariant validated = _p->typed_key.validate(p_value, "find_key");
+	ERR_FAIL_COND_V(!validated.valid, Variant());
 	for (const KeyValue<Variant, Variant> &E : _p->variant_map) {
-		if (E.value == value) {
+		if (E.value == validated.value) {
 			return E.key;
 		}
 	}
@@ -234,10 +236,10 @@ Variant Dictionary::find_key(const Variant &p_value) const {
 }
 
 bool Dictionary::erase(const Variant &p_key) {
-	Variant key = p_key;
-	ERR_FAIL_COND_V(!_p->typed_key.validate(key, "erase"), false);
+	ValidatedVariant validated = _p->typed_key.validate(p_key, "erase");
+	ERR_FAIL_COND_V(!validated.valid, false);
 	ERR_FAIL_COND_V_MSG(_p->read_only, false, "Dictionary is in read-only state.");
-	return _p->variant_map.erase(key);
+	return _p->variant_map.erase(validated.value);
 }
 
 bool Dictionary::operator==(const Dictionary &p_dictionary) const {
@@ -297,12 +299,12 @@ void Dictionary::clear() {
 void Dictionary::merge(const Dictionary &p_dictionary, bool p_overwrite) {
 	ERR_FAIL_COND_MSG(_p->read_only, "Dictionary is in read-only state.");
 	for (const KeyValue<Variant, Variant> &E : p_dictionary._p->variant_map) {
-		Variant key = E.key;
-		Variant value = E.value;
-		ERR_FAIL_COND(!_p->typed_key.validate(key, "merge"));
-		ERR_FAIL_COND(!_p->typed_value.validate(value, "merge"));
-		if (p_overwrite || !has(key)) {
-			operator[](key) = value;
+		ValidatedVariant validated_key = _p->typed_key.validate(E.key, "merge");
+		ERR_FAIL_COND(!validated_key.valid);
+		ValidatedVariant validated_value = _p->typed_key.validate(E.value, "merge");
+		ERR_FAIL_COND(!validated_value.valid);
+		if (p_overwrite || !has(validated_key.value)) {
+			operator[](validated_key.value) = validated_value.value;
 		}
 	}
 }
@@ -536,9 +538,9 @@ const Variant *Dictionary::next(const Variant *p_key) const {
 		}
 		return nullptr;
 	}
-	Variant key = *p_key;
-	ERR_FAIL_COND_V(!_p->typed_key.validate(key, "next"), nullptr);
-	HashMap<Variant, Variant, VariantHasher, StringLikeVariantComparator>::Iterator E = _p->variant_map.find(key);
+	ValidatedVariant validated = _p->typed_key.validate(*p_key, "next");
+	ERR_FAIL_COND_V(!validated.valid, nullptr);
+	HashMap<Variant, Variant, VariantHasher, StringLikeVariantComparator>::Iterator E = _p->variant_map.find(validated.value);
 
 	if (!E) {
 		return nullptr;
@@ -683,6 +685,15 @@ Dictionary::Dictionary(const Dictionary &p_from) {
 	_ref(p_from);
 }
 
+Dictionary::Dictionary(const Array &p_from, const StructInfo &p_struct_info) {
+	_p = memnew(DictionaryPrivate);
+	_p->refcount.init();
+	for (int i = 0; i < p_struct_info.count; i++) { // TODO: is there a more efficient way to do this?
+		Variant value = (0 <= i && i < p_from.size()) ? p_from[i] : p_struct_info.default_values[i];
+		_p->variant_map.insert(p_struct_info.names[i], value);
+	}
+}
+
 Dictionary::Dictionary() {
 	_p = memnew(DictionaryPrivate);
 	_p->refcount.init();
diff --git a/core/variant/dictionary.h b/core/variant/dictionary.h
index 5f3ce40219bd..bd724fbc601a 100644
--- a/core/variant/dictionary.h
+++ b/core/variant/dictionary.h
@@ -111,6 +111,7 @@ class Dictionary {
 
 	Dictionary(const Dictionary &p_base, uint32_t p_key_type, const StringName &p_key_class_name, const Variant &p_key_script, uint32_t p_value_type, const StringName &p_value_class_name, const Variant &p_value_script);
 	Dictionary(const Dictionary &p_from);
+	Dictionary(const Array &p_from, const StructInfo &p_struct_info);
 	Dictionary();
 	~Dictionary();
 };
diff --git a/core/variant/struct.h b/core/variant/struct.h
new file mode 100644
index 000000000000..7c4c8c6fc83c
--- /dev/null
+++ b/core/variant/struct.h
@@ -0,0 +1,146 @@
+/**************************************************************************/
+/*  struct.h                                                              */
+/**************************************************************************/
+/*                         This file is part of:                          */
+/*                             GODOT ENGINE                               */
+/*                        https://godotengine.org                         */
+/**************************************************************************/
+/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
+/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur.                  */
+/*                                                                        */
+/* Permission is hereby granted, free of charge, to any person obtaining  */
+/* a copy of this software and associated documentation files (the        */
+/* "Software"), to deal in the Software without restriction, including    */
+/* without limitation the rights to use, copy, modify, merge, publish,    */
+/* distribute, sublicense, and/or sell copies of the Software, and to     */
+/* permit persons to whom the Software is furnished to do so, subject to  */
+/* the following conditions:                                              */
+/*                                                                        */
+/* The above copyright notice and this permission notice shall be         */
+/* included in all copies or substantial portions of the Software.        */
+/*                                                                        */
+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,        */
+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF     */
+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. */
+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY   */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,   */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE      */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                 */
+/**************************************************************************/
+
+#ifndef STRUCT_H
+#define STRUCT_H
+
+#include "core/object/object.h"
+#include "core/variant/array.h"
+#include "core/variant/binder_common.h"
+#include "core/variant/method_ptrcall.h"
+#include "core/variant/type_info.h"
+#include "core/variant/variant.h"
+
+class Array;
+
+template <class T>
+class Struct : public Array {
+public:
+	_FORCE_INLINE_ void operator=(const Array &p_array) {
+		ERR_FAIL_COND_MSG(!is_same_typed(p_array), "Cannot assign a Struct from array with a different format.");
+		_ref(p_array);
+	}
+	_FORCE_INLINE_ Variant &operator[](const StringName &p_struct_member) {
+		return get_named(p_struct_member);
+	}
+	_FORCE_INLINE_ const Variant &operator[](const StringName &p_struct_member) const {
+		return get_named(p_struct_member);
+	}
+	template <typename StructMember>
+	_FORCE_INLINE_ int get_member_index() const {
+		return T::Layout::template get_member_index<StructMember>();
+	}
+	template <typename StructMember>
+	_FORCE_INLINE_ Variant get_member_value() const {
+		return get(get_member_index<StructMember>());
+	}
+	template <typename StructMember>
+	_FORCE_INLINE_ void set_member_value(const typename StructMember::Type &p_value) {
+		set(get_member_index<StructMember>(), p_value);
+	}
+	template <typename StructMember>
+	_FORCE_INLINE_ typename StructMember::Type get_member() const {
+		return StructMember::from_variant(get(get_member_index<StructMember>()));
+	}
+	template <typename StructMember>
+	_FORCE_INLINE_ void set_member(const typename StructMember::Type &p_struct_member) {
+		set(get_member_index<StructMember>(), StructMember::to_variant(p_struct_member));
+	}
+	_FORCE_INLINE_ Struct(const T &p_struct) :
+			Array(T::Layout::to_array(p_struct), T::get_struct_info()) {
+	}
+	_FORCE_INLINE_ Struct(const Variant &p_variant) :
+			Array(Array(p_variant), T::get_struct_info()) {
+	}
+	_FORCE_INLINE_ Struct(const Array &p_array) :
+			Array(p_array, T::get_struct_info()) {
+	}
+	_FORCE_INLINE_ Struct() :
+			Array(T::get_struct_info()) {
+	}
+	_FORCE_INLINE_ operator Dictionary() {
+		Dictionary dict;
+		for (int i = 0; i < size(); i++) {
+			dict[get_member_name(i)] = get(i);
+		}
+		return dict;
+	}
+};
+
+template <class T>
+struct VariantInternalAccessor<Struct<T>> {
+	_FORCE_INLINE_ static Struct<T> get(const Variant *v) { return *VariantInternal::get_array(v); }
+	_FORCE_INLINE_ static void set(Variant *v, const Struct<T> &p_array) { *VariantInternal::get_array(v) = p_array; }
+};
+
+template <class T>
+struct VariantInternalAccessor<const Struct<T> &> {
+	_FORCE_INLINE_ static Struct<T> get(const Variant *v) { return *VariantInternal::get_array(v); }
+	_FORCE_INLINE_ static void set(Variant *v, const Struct<T> &p_array) { *VariantInternal::get_array(v) = p_array; }
+};
+
+template <class T>
+struct PtrToArg<Struct<T>> {
+	_FORCE_INLINE_ static Struct<T> convert(const void *p_ptr) {
+		return Struct<T>(*reinterpret_cast<const Array *>(p_ptr));
+	}
+	typedef Array EncodeT;
+	_FORCE_INLINE_ static void encode(Struct<T> p_val, void *p_ptr) {
+		*(Array *)p_ptr = p_val;
+	}
+};
+
+template <class T>
+struct PtrToArg<const Struct<T> &> {
+	typedef Array EncodeT;
+	_FORCE_INLINE_ static Struct<T> convert(const void *p_ptr) {
+		return Struct<T>(*reinterpret_cast<const Array *>(p_ptr));
+	}
+};
+
+template <class T>
+struct GetTypeInfo<Struct<T>> {
+	static const Variant::Type VARIANT_TYPE = Variant::ARRAY;
+	static const GodotTypeInfo::Metadata METADATA = GodotTypeInfo::METADATA_NONE;
+	static PropertyInfo get_class_info() {
+		return PropertyInfo(Variant::ARRAY, String(), PROPERTY_HINT_ARRAY_TYPE, T::Layout::get_struct_name());
+	}
+};
+
+template <class T>
+struct GetTypeInfo<const Struct<T> &> {
+	static const Variant::Type VARIANT_TYPE = Variant::ARRAY;
+	static const GodotTypeInfo::Metadata METADATA = GodotTypeInfo::METADATA_NONE;
+	static PropertyInfo get_class_info() {
+		return PropertyInfo(Variant::ARRAY, String(), PROPERTY_HINT_ARRAY_TYPE, T::Layout::get_struct_name());
+	}
+};
+
+#endif // STRUCT_H
diff --git a/core/variant/struct_generator.cpp b/core/variant/struct_generator.cpp
new file mode 100644
index 000000000000..057f7f190c1f
--- /dev/null
+++ b/core/variant/struct_generator.cpp
@@ -0,0 +1,65 @@
+/**************************************************************************/
+/*  struct_generator.cpp                                                  */
+/**************************************************************************/
+/*                         This file is part of:                          */
+/*                             GODOT ENGINE                               */
+/*                        https://godotengine.org                         */
+/**************************************************************************/
+/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
+/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur.                  */
+/*                                                                        */
+/* Permission is hereby granted, free of charge, to any person obtaining  */
+/* a copy of this software and associated documentation files (the        */
+/* "Software"), to deal in the Software without restriction, including    */
+/* without limitation the rights to use, copy, modify, merge, publish,    */
+/* distribute, sublicense, and/or sell copies of the Software, and to     */
+/* permit persons to whom the Software is furnished to do so, subject to  */
+/* the following conditions:                                              */
+/*                                                                        */
+/* The above copyright notice and this permission notice shall be         */
+/* included in all copies or substantial portions of the Software.        */
+/*                                                                        */
+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,        */
+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF     */
+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. */
+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY   */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,   */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE      */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                 */
+/**************************************************************************/
+
+#include "struct_generator.h"
+
+#include "core/variant/struct.h"
+#include "core/variant/typed_array.h"
+
+Dictionary StructInfo::to_dict() const {
+	Dictionary dict;
+	dict["name"] = name;
+	dict["count"] = count;
+	dict["names"] = names;
+	PackedInt32Array packed_types;
+	packed_types.resize(count);
+	for (int i = 0; i < count; i++) {
+		packed_types.write[i] = types[i];
+	}
+	dict["types"] = packed_types;
+	dict["class_names"] = class_names;
+	TypedArray<Dictionary> member_info_dictionaries;
+	member_info_dictionaries.resize(count);
+	for (int i = 0; i < count; i++) {
+		const StructInfo *member_info = struct_member_infos[i];
+		// TODO: Recursion limit?
+		member_info_dictionaries[i] = member_info ? member_info->to_dict() : Dictionary();
+	}
+	dict["struct_member_infos"] = member_info_dictionaries;
+	dict["default_values"] = default_values;
+	return dict;
+}
+
+// Needs to be in .cpp so struct.h can be included
+template <typename StructType, typename... StructMembers>
+void StructLayout<StructType, StructMembers...>::fill_struct_array(Struct<StructType> &p_array, const StructType &p_struct) {
+	int dummy[] = { 0, (p_array.template set_member_value<StructMembers>(StructMembers::get_variant(p_struct)), 0)... };
+	(void)dummy; // Suppress unused variable warning
+}
diff --git a/core/variant/struct_generator.h b/core/variant/struct_generator.h
new file mode 100644
index 000000000000..0289ff473d49
--- /dev/null
+++ b/core/variant/struct_generator.h
@@ -0,0 +1,303 @@
+/**************************************************************************/
+/*  struct_generator.h                                                    */
+/**************************************************************************/
+/*                         This file is part of:                          */
+/*                             GODOT ENGINE                               */
+/*                        https://godotengine.org                         */
+/**************************************************************************/
+/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
+/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur.                  */
+/*                                                                        */
+/* Permission is hereby granted, free of charge, to any person obtaining  */
+/* a copy of this software and associated documentation files (the        */
+/* "Software"), to deal in the Software without restriction, including    */
+/* without limitation the rights to use, copy, modify, merge, publish,    */
+/* distribute, sublicense, and/or sell copies of the Software, and to     */
+/* permit persons to whom the Software is furnished to do so, subject to  */
+/* the following conditions:                                              */
+/*                                                                        */
+/* The above copyright notice and this permission notice shall be         */
+/* included in all copies or substantial portions of the Software.        */
+/*                                                                        */
+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,        */
+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF     */
+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. */
+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY   */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,   */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE      */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                 */
+/**************************************************************************/
+
+#ifndef STRUCT_GENERATOR_H
+#define STRUCT_GENERATOR_H
+
+#include "core/variant/variant.h"
+
+template <typename T>
+class TypedArray;
+
+template <typename T>
+class Struct;
+
+#define STRUCT_DECLARE(m_struct_name) using StructType = m_struct_name
+
+#define STRUCT_MEMBER_TYPEDEF_ALIAS(m_type, m_member_name, m_member_name_alias, m_default)                                                       \
+	using Type = m_type;                                                                                                                         \
+	_FORCE_INLINE_ static const StringName get_name() { return SNAME(m_member_name_alias); }                                                     \
+	_FORCE_INLINE_ static Variant get_variant(const StructType &p_struct) { return to_variant(p_struct.m_member_name); }                         \
+	_FORCE_INLINE_ static const Variant get_default_value_variant() { return to_variant(m_default); }                                            \
+	_FORCE_INLINE_ static Type get(const StructType &p_struct) { return p_struct.m_member_name; }                                                \
+	_FORCE_INLINE_ static Type get_default_value() { return m_default; }                                                                         \
+	_FORCE_INLINE_ static void set_variant(StructType &p_struct, const Variant &p_variant) { p_struct.m_member_name = from_variant(p_variant); } \
+	_FORCE_INLINE_ static void set(StructType &p_struct, const m_type &p_value) { p_struct.m_member_name = p_value; }
+
+#define STRUCT_MEMBER_TYPEDEF(m_type, m_member_name, m_default) \
+	STRUCT_MEMBER_TYPEDEF_ALIAS(m_type, m_member_name, #m_member_name, m_default)
+
+#define STRUCT_MEMBER_TYPEDEF_POINTER(m_type, m_member_name, m_default)                                                                          \
+	using Type = m_type *;                                                                                                                       \
+	_FORCE_INLINE_ static const StringName get_name() { return SNAME(#m_member_name); }                                                          \
+	_FORCE_INLINE_ static Variant get_variant(const StructType &p_struct) { return to_variant(p_struct.m_member_name); }                         \
+	_FORCE_INLINE_ static const Variant get_default_value_variant() { return to_variant(m_default); }                                            \
+	_FORCE_INLINE_ static Type get(const StructType &p_struct) { return p_struct.m_member_name; }                                                \
+	_FORCE_INLINE_ static const m_type *get_default_value() { return m_default; }                                                                \
+	_FORCE_INLINE_ static void set_variant(StructType &p_struct, const Variant &p_variant) { p_struct.m_member_name = from_variant(p_variant); } \
+	_FORCE_INLINE_ static void set(StructType &p_struct, Type p_value) { p_struct.m_member_name = p_value; }
+
+#define STRUCT_MEMBER_PRIMITIVE_ALIAS(m_type, m_member_name, m_member_name_alias, m_default)                \
+	m_type m_member_name = m_default;                                                                       \
+	struct m_member_name {                                                                                  \
+		_FORCE_INLINE_ static m_type from_variant(const Variant &p_variant) { return p_variant; }           \
+		_FORCE_INLINE_ static Variant to_variant(const m_type &p_value) { return p_value; }                 \
+		STRUCT_MEMBER_TYPEDEF_ALIAS(m_type, m_member_name, m_member_name_alias, m_default);                 \
+		_FORCE_INLINE_ static Variant::Type get_variant_type() { return to_variant(m_default).get_type(); } \
+		_FORCE_INLINE_ static const StringName get_class_name() { return StringName(); }                    \
+		static const StructInfo *get_struct_member_info() { return nullptr; }                               \
+	}
+
+#define STRUCT_MEMBER_PRIMITIVE_FROM(m_type, m_member_name, m_default)                                      \
+	m_type m_member_name = m_default;                                                                       \
+	struct m_member_name {                                                                                  \
+		static m_type from_variant(const Variant &p_variant);                                               \
+		_FORCE_INLINE_ static Variant to_variant(const m_type &p_value) { return p_value; }                 \
+		STRUCT_MEMBER_TYPEDEF(m_type, m_member_name, m_default);                                            \
+		_FORCE_INLINE_ static Variant::Type get_variant_type() { return to_variant(m_default).get_type(); } \
+		_FORCE_INLINE_ static const StringName get_class_name() { return StringName(); }                    \
+		static const StructInfo *get_struct_member_info() { return nullptr; }                               \
+	}
+
+#define STRUCT_MEMBER_PRIMITIVE(m_type, m_member_name, m_default) \
+	STRUCT_MEMBER_PRIMITIVE_ALIAS(m_type, m_member_name, #m_member_name, m_default)
+
+#define STRUCT_MEMBER_PRIMITIVE_FROM_TO_ALIAS(m_type, m_member_name, m_member_name_alias, m_default)        \
+	m_type m_member_name = m_default;                                                                       \
+	struct m_member_name {                                                                                  \
+		static m_type from_variant(const Variant &p_variant);                                               \
+		static Variant to_variant(const m_type &p_value);                                                   \
+		STRUCT_MEMBER_TYPEDEF_ALIAS(m_type, m_member_name, m_member_name_alias, m_default);                 \
+		_FORCE_INLINE_ static Variant::Type get_variant_type() { return to_variant(m_default).get_type(); } \
+		_FORCE_INLINE_ static const StringName get_class_name() { return StringName(); }                    \
+		static const StructInfo *get_struct_member_info() { return nullptr; }                               \
+	}
+
+#define STRUCT_MEMBER_PRIMITIVE_FROM_TO(m_type, m_member_name, m_default) \
+	STRUCT_MEMBER_PRIMITIVE_FROM_TO_ALIAS(m_type, m_member_name, #m_member_name, m_default)
+
+#define STRUCT_MEMBER_CLASS_POINTER(m_type, m_member_name, m_default)                                                       \
+	m_type *m_member_name = m_default;                                                                                      \
+	struct m_member_name {                                                                                                  \
+		_FORCE_INLINE_ static m_type *from_variant(const Variant &p_variant) { return Object::cast_to<m_type>(p_variant); } \
+		_FORCE_INLINE_ static Variant to_variant(m_type *p_value) { return p_value; }                                       \
+		STRUCT_MEMBER_TYPEDEF_POINTER(m_type, m_member_name, m_default);                                                    \
+		_FORCE_INLINE_ static Variant::Type get_variant_type() { return Variant::OBJECT; }                                  \
+		_FORCE_INLINE_ static const StringName get_class_name() { return SNAME(#m_type); }                                  \
+		static const StructInfo *get_struct_member_info() { return nullptr; }                                               \
+	}
+
+#define STRUCT_MEMBER_CLASS_VALUE(m_type, m_member_name, m_default)                               \
+	m_type m_member_name = m_default;                                                             \
+	struct m_member_name {                                                                        \
+		_FORCE_INLINE_ static m_type from_variant(const Variant &p_variant) { return p_variant; } \
+		_FORCE_INLINE_ static Variant to_variant(const m_type &p_value) { return p_value; }       \
+		STRUCT_MEMBER_TYPEDEF(m_type, m_member_name, m_default);                                  \
+		_FORCE_INLINE_ static Variant::Type get_variant_type() { return Variant::OBJECT; }        \
+		_FORCE_INLINE_ static const StringName get_class_name() { return SNAME(#m_type); }        \
+		static const StructInfo *get_struct_member_info() { return nullptr; }                     \
+	}
+
+#define STRUCT_MEMBER_STRUCT(m_type, m_member_name, m_default)                                                          \
+	m_type m_member_name = m_default;                                                                                   \
+	struct m_member_name {                                                                                              \
+		_FORCE_INLINE_ static m_type from_variant(const Variant &p_variant) { return Struct<m_type>(p_variant); }       \
+		_FORCE_INLINE_ static Variant to_variant(const m_type &p_value) { return Struct<m_type>(p_value); }             \
+		STRUCT_MEMBER_TYPEDEF(m_type, m_member_name, m_default);                                                        \
+		_FORCE_INLINE_ static Variant::Type get_variant_type() { return Variant::ARRAY; }                               \
+		_FORCE_INLINE_ static const StringName get_class_name() { return StringName(); }                                \
+		_FORCE_INLINE_ static const StructInfo *get_struct_member_info() { return &m_type::Layout::get_struct_info(); } \
+	}
+
+#define STRUCT_MEMBER_STRUCT_FROM_TO_ALIAS(m_type, m_member_name, m_member_name_alias, m_default) \
+	m_type m_member_name = m_default;                                                             \
+	struct m_member_name {                                                                        \
+		static m_type from_variant(const Variant &p_variant);                                     \
+		static Variant to_variant(const m_type &p_value);                                         \
+		STRUCT_MEMBER_TYPEDEF_ALIAS(m_type, m_member_name, m_member_name_alias, m_default);       \
+		_FORCE_INLINE_ static Variant::Type get_variant_type() { return Variant::ARRAY; }         \
+		_FORCE_INLINE_ static const StringName get_class_name() { return StringName(); }          \
+		_FORCE_INLINE_ static const StructInfo *get_struct_member_info() {                        \
+			return &m_type::Layout::get_struct_info();                                            \
+		}                                                                                         \
+	}
+
+#define STRUCT_MEMBER_STRUCT_FROM_TO(m_type, m_member_name, m_default) \
+	STRUCT_MEMBER_STRUCT_FROM_TO_ALIAS(m_type, m_member_name, #m_member_name, m_default)
+
+#define STRUCT_LAYOUT_WITH_NAME(m_struct_name, m_struct, ...) \
+	static const StringName get_struct_name() {               \
+		return SNAME(m_struct_name);                          \
+	}                                                         \
+	static const StructInfo &get_struct_info() {              \
+		return Layout::get_struct_info();                     \
+	}                                                         \
+	using Layout = StructLayout<m_struct, __VA_ARGS__>;       \
+	m_struct(const Dictionary &p_dict) {                      \
+		Layout::fill_struct(p_dict, *this);                   \
+	}                                                         \
+	m_struct(const Array &p_array) {                          \
+		Layout::fill_struct(p_array, *this);                  \
+	}
+
+#define STRUCT_LAYOUT_OWNER(m_owner, m_struct, ...) STRUCT_LAYOUT_WITH_NAME(#m_owner "." #m_struct, m_struct, __VA_ARGS__)
+
+#define STRUCT_LAYOUT(m_struct, ...) STRUCT_LAYOUT_WITH_NAME(#m_struct, m_struct, __VA_ARGS__)
+
+struct StructInfo {
+	StringName name = StringName();
+	int32_t count = 0;
+
+	Vector<StringName> names;
+	Vector<Variant::Type> types;
+	Vector<StringName> class_names;
+	Vector<const StructInfo *> struct_member_infos;
+	Vector<Variant> default_values;
+
+	StructInfo() {};
+	StructInfo(const StringName &p_name, const int32_t p_count) :
+			name(p_name), count(p_count) {
+		names.resize(p_count);
+		types.resize(p_count);
+		class_names.resize(p_count);
+		struct_member_infos.resize(p_count);
+		default_values.resize(p_count);
+	}
+	StructInfo(const StringName &p_name, const int32_t p_count, const Vector<StringName> &p_names, const Vector<Variant::Type> &p_types, const Vector<StringName> &p_class_names, const Vector<const StructInfo *> &p_struct_member_infos, const Vector<Variant> &p_default_values) :
+			name(p_name),
+			count(p_count),
+			names(p_names),
+			types(p_types),
+			class_names(p_class_names),
+			struct_member_infos(p_struct_member_infos),
+			default_values(p_default_values) {};
+
+	Dictionary to_dict() const;
+
+	_FORCE_INLINE_ void set(int32_t p_index, const StringName &p_name, const Variant::Type &p_type, const StringName &p_class_name, const StructInfo *p_struct_member_info, const Variant &p_default_value) {
+		names.write[p_index] = p_name;
+		types.write[p_index] = p_type;
+		class_names.write[p_index] = p_class_name;
+		struct_member_infos.write[p_index] = p_struct_member_info;
+		default_values.write[p_index] = p_default_value;
+	}
+
+	_FORCE_INLINE_ bool operator==(const StructInfo &p_struct_info) const {
+		return name == p_struct_info.name;
+	}
+	_FORCE_INLINE_ bool operator!=(const StructInfo &p_struct_info) const {
+		return name != p_struct_info.name;
+	}
+	_FORCE_INLINE_ static bool is_compatible(const StructInfo *p_struct_info_1, const StructInfo *p_struct_info_2) {
+		if (p_struct_info_1) {
+			if (p_struct_info_2) {
+				return *p_struct_info_1 == *p_struct_info_2;
+			}
+			return false;
+		}
+		return p_struct_info_2 == nullptr;
+	}
+};
+
+template <typename StructType, typename... StructMembers>
+struct StructLayout {
+	static constexpr int32_t struct_member_count = sizeof...(StructMembers);
+	_FORCE_INLINE_ static const StringName get_struct_name() {
+		return StructType::get_struct_name();
+	}
+	_FORCE_INLINE_ static const StructInfo &get_struct_info() {
+		static const Vector<StringName> names = { StructMembers::get_name()... };
+		static const Vector<Variant::Type> types = { StructMembers::get_variant_type()... };
+		static const Vector<StringName> class_names = { StructMembers::get_class_name()... };
+		static const Vector<const StructInfo *> struct_member_infos = { StructMembers::get_struct_member_info()... };
+		static const Vector<Variant> default_values = { StructMembers::get_default_value_variant()... };
+		static const StructInfo info = StructInfo(get_struct_name(), struct_member_count, names, types, class_names, struct_member_infos, default_values);
+		return info;
+	}
+
+	static Array to_array(const StructType &p_struct) {
+		Array array;
+		fill_array(array, p_struct);
+		return array;
+	}
+	static void fill_array(Array &p_array, const StructType &p_struct) {
+		p_array.resize(struct_member_count);
+		Variant vals[struct_member_count] = { StructMembers::get_variant(p_struct)... };
+		for (int32_t i = 0; i < struct_member_count; i++) {
+			p_array.set(i, vals[i]);
+		}
+	}
+	static void fill_struct(const Array &p_array, StructType &p_struct) {
+		int32_t i = 0;
+		int temp[] = { 0, (StructMembers::set_variant(p_struct, p_array.get(i)), i++, 0)... };
+		(void)temp; // Suppress unused variable warning
+	}
+	static void fill_struct_array(Struct<StructType> &p_array, const StructType &p_struct);
+
+	static Dictionary to_dict(const StructType &p_struct) {
+		Dictionary dict;
+		fill_dict(dict, p_struct);
+		return dict;
+	}
+	static void fill_dict(Dictionary &p_dict, const StructType &p_struct) {
+		int temp[] = { 0, (p_dict[StructMembers::get_name()] = StructMembers::get_variant(p_struct), 0)... };
+		(void)temp; // Suppress unused variable warning
+	}
+	static void fill_struct(const Dictionary &p_dict, StructType &p_struct) {
+		int temp[] = { 0, (StructMembers::set_variant(p_struct, p_dict[StructMembers::get_name()]), 0)... };
+		(void)temp; // Suppress unused variable warning
+	}
+
+	template <typename T>
+	_FORCE_INLINE_ static constexpr int get_member_index() {
+		return sizeof...(StructMembers) - TypeFinder<T, StructMembers...>::remaining_count - 1;
+	}
+
+private:
+	template <typename TypeToFind, typename... TypesToSearch>
+	struct TypeFinder;
+
+	template <typename TypeFound, typename... TypesRemaining>
+	struct TypeFinder<TypeFound, TypeFound, TypesRemaining...> {
+		static constexpr int remaining_count = sizeof...(TypesRemaining);
+	};
+
+	template <typename TypeNotFound>
+	struct TypeFinder<TypeNotFound> {
+		static constexpr int remaining_count = 0;
+	};
+
+	template <typename TypeToFind, typename TypeToCheck, typename... TypesRemaining>
+	struct TypeFinder<TypeToFind, TypeToCheck, TypesRemaining...> {
+		static constexpr int remaining_count = TypeFinder<TypeToFind, TypesRemaining...>::remaining_count;
+	};
+};
+
+#endif // STRUCT_GENERATOR_H
diff --git a/core/variant/typed_array.h b/core/variant/typed_array.h
index 07bf8afa7b7b..7cada0e2f705 100644
--- a/core/variant/typed_array.h
+++ b/core/variant/typed_array.h
@@ -57,7 +57,7 @@ class TypedArray : public Array {
 		}
 	}
 	_FORCE_INLINE_ TypedArray() {
-		set_typed(Variant::OBJECT, T::get_class_static(), Variant());
+		initialize_typed(Variant::OBJECT, T::get_class_static(), Variant());
 	}
 };
 
@@ -72,6 +72,53 @@ struct VariantInternalAccessor<const TypedArray<T> &> {
 	static _FORCE_INLINE_ void set(Variant *v, const TypedArray<T> &p_array) { *VariantInternal::get_array(v) = p_array; }
 };
 
+template <typename T>
+class TypedArray<Struct<T>> : public Array {
+public:
+	_FORCE_INLINE_ void operator=(const Array &p_array) {
+		ERR_FAIL_COND_MSG(!is_same_typed(p_array), "Cannot assign an array with a different element type.");
+		_ref(p_array);
+	}
+	_FORCE_INLINE_ TypedArray(const Variant &p_variant) :
+			Array(Array(p_variant), T::get_struct_info()) {
+	}
+	_FORCE_INLINE_ TypedArray(const Array &p_array) : // TypedArray(struct) creates [ struct ]
+			Array(p_array.is_array_of_structs() ? p_array : Array({ p_array }, T::get_struct_info()), T::get_struct_info()) {
+	}
+	_FORCE_INLINE_ TypedArray() {
+		initialize_struct_type(T::get_struct_info(), true);
+	}
+	_FORCE_INLINE_ TypedArray(const List<T> *p_list) {
+		initialize_struct_type(T::get_struct_info(), true);
+		for (const typename List<T>::Element *E = p_list->front(); E; E = E->next()) {
+			push_back(Struct<T>(E->get()));
+		}
+	}
+	_FORCE_INLINE_ operator List<T>() const {
+		List<T> list;
+		for (int i = 0; i < size(); i++) {
+			list.push_back(T(Struct<T>(get(i))));
+		}
+		return list;
+	}
+};
+template <typename T>
+struct GetTypeInfo<TypedArray<Struct<T>>> {
+	static const Variant::Type VARIANT_TYPE = Variant::ARRAY;
+	static const GodotTypeInfo::Metadata METADATA = GodotTypeInfo::METADATA_NONE;
+	static inline PropertyInfo get_class_info() {
+		return PropertyInfo(Variant::ARRAY, String(), PROPERTY_HINT_ARRAY_TYPE, T::get_struct_name());
+	}
+};
+template <typename T>
+struct GetTypeInfo<const TypedArray<Struct<T>> &> {
+	static const Variant::Type VARIANT_TYPE = Variant::ARRAY;
+	static const GodotTypeInfo::Metadata METADATA = GodotTypeInfo::METADATA_NONE;
+	static inline PropertyInfo get_class_info() {
+		return PropertyInfo(Variant::ARRAY, String(), PROPERTY_HINT_ARRAY_TYPE, T::get_struct_name());
+	}
+};
+
 //specialization for the rest of variant types
 
 #define MAKE_TYPED_ARRAY(m_type, m_variant_type)                                                                 \
@@ -94,7 +141,7 @@ struct VariantInternalAccessor<const TypedArray<T> &> {
 			}                                                                                                    \
 		}                                                                                                        \
 		_FORCE_INLINE_ TypedArray() {                                                                            \
-			set_typed(m_variant_type, StringName(), Variant());                                                  \
+			initialize_typed(m_variant_type, StringName(), Variant());                                           \
 		}                                                                                                        \
 	};
 
diff --git a/core/variant/variant.cpp b/core/variant/variant.cpp
index 186643b024ac..ce7b76af487b 100644
--- a/core/variant/variant.cpp
+++ b/core/variant/variant.cpp
@@ -1694,6 +1694,21 @@ String stringify_vector(const T &vec, int recursion_count) {
 	return str;
 }
 
+String stringify_array(const Array &p_array, int recursion_count) { // TODO: should this be called r_recursion_count?
+	String str("[");
+	for (int i = 0; i < p_array.size(); i++) {
+		if (i > 0) {
+			str += ", ";
+		}
+		if (p_array.is_struct()) {
+			str += String(p_array.get_member_name(i)) + ": ";
+		}
+		str += stringify_variant_clean(p_array[i], recursion_count);
+	}
+	str += "]";
+	return str;
+}
+
 String Variant::stringify(int recursion_count) const {
 	switch (type) {
 		case NIL:
@@ -1809,7 +1824,7 @@ String Variant::stringify(int recursion_count) const {
 			ERR_FAIL_COND_V_MSG(recursion_count > MAX_RECURSION, "[...]", "Maximum array recursion reached!");
 			recursion_count++;
 
-			return stringify_vector(operator Array(), recursion_count);
+			return stringify_array(operator Array(), recursion_count);
 		}
 		case OBJECT: {
 			if (_get_obj().obj) {
diff --git a/core/variant/variant.h b/core/variant/variant.h
index d4e4b330cdc6..3d876296ac91 100644
--- a/core/variant/variant.h
+++ b/core/variant/variant.h
@@ -350,6 +350,9 @@ class Variant {
 	_FORCE_INLINE_ bool is_array() const {
 		return type >= ARRAY;
 	}
+	_FORCE_INLINE_ bool is_struct() const {
+		return Array(*this).is_struct(); // TODO: not sure if this is the best way to do this.
+	}
 	bool is_shared() const;
 	bool is_zero() const;
 	bool is_one() const;
diff --git a/core/variant/variant_construct.cpp b/core/variant/variant_construct.cpp
index fb75a874e728..94c5e87dd6b8 100644
--- a/core/variant/variant_construct.cpp
+++ b/core/variant/variant_construct.cpp
@@ -203,6 +203,7 @@ void Variant::_register_variant_constructors() {
 	add_constructor<VariantConstructNoArgs<Array>>(sarray());
 	add_constructor<VariantConstructor<Array, Array>>(sarray("from"));
 	add_constructor<VariantConstructorTypedArray>(sarray("base", "type", "class_name", "script"));
+	//	add_constructor<VariantConstructorStruct>(sarray("base", "size", "struct_name", "member_names"));
 	add_constructor<VariantConstructorToArray<PackedByteArray>>(sarray("from"));
 	add_constructor<VariantConstructorToArray<PackedInt32Array>>(sarray("from"));
 	add_constructor<VariantConstructorToArray<PackedInt64Array>>(sarray("from"));
diff --git a/core/variant/variant_construct.h b/core/variant/variant_construct.h
index 68210a945128..c9bc1b875299 100644
--- a/core/variant/variant_construct.h
+++ b/core/variant/variant_construct.h
@@ -581,6 +581,93 @@ class VariantConstructorTypedArray {
 	}
 };
 
+//class VariantConstructorStruct {
+//public:
+//	static void construct(Variant &r_ret, const Variant **p_args, Callable::CallError &r_error) {
+//		// want to call Array::Array(const Array &p_from, uint32_t p_size, const StringName &p_name, const StructMember &(*p_get_member)(uint32_t))
+//		for (int i = 0; i < get_argument_count(); i++) {
+//			Variant::Type arg_type = get_argument_type(i);
+//			if (p_args[i]->get_type() != arg_type) {
+//				r_error.error = Callable::CallError::CALL_ERROR_INVALID_ARGUMENT;
+//				r_error.argument = i;
+//				r_error.expected = arg_type;
+//				return;
+//			}
+//		}
+//
+//		const Array &base_arr = *VariantGetInternalPtr<Array>::get_ptr(p_args[0]);
+//		const uint32_t size = p_args[1]->operator uint32_t();
+//		const StringName &struct_name = *VariantGetInternalPtr<StringName>::get_ptr(p_args[2]);
+//		// TODO: I don't like have to use PackedStringArray here, but there is no PackedStringNameArray
+//		const PackedStringArray &member_names = *VariantGetInternalPtr<PackedStringArray>::get_ptr(p_args[3]);
+//		Vector<StringName> names;
+//		const int count = member_names.size();
+//		names.resize(count);
+//		for (int i = 0; i < count; i++) {
+//			names.write[i] = StringName(member_names[i]);
+//		}
+//		r_ret = Array(base_arr, size, struct_name, names);
+//	}
+//
+//	_FORCE_INLINE_ static void validated_construct(Variant *r_ret, const Variant **p_args) {
+//		const Array &base_arr = *VariantGetInternalPtr<Array>::get_ptr(p_args[0]);
+//		const uint32_t size = p_args[1]->operator uint32_t();
+//		const StringName &struct_name = *VariantGetInternalPtr<StringName>::get_ptr(p_args[2]);
+//		const PackedStringArray &member_names = *VariantGetInternalPtr<PackedStringArray>::get_ptr(p_args[3]);
+//		Vector<StringName> names;
+//		const int count = member_names.size();
+//		names.resize(count);
+//		for (int i = 0; i < count; i++) {
+//			names.write[i] = StringName(member_names[i]);
+//		}
+//		*r_ret = Array(base_arr, size, struct_name, names);
+//	}
+//
+//	static void ptr_construct(void *base, const void **p_args) {
+//		const Array &base_arr = PtrToArg<Array>::convert(p_args[0]);
+//		const uint32_t size = PtrToArg<uint32_t>::convert(p_args[1]);
+//		const StringName &struct_name = PtrToArg<StringName>::convert(p_args[2]);
+//		const PackedStringArray &member_names = PtrToArg<PackedStringArray>::convert(p_args[3]);
+//		Vector<StringName> names;
+//		const int count = member_names.size();
+//		names.resize(count);
+//		for (int i = 0; i < count; i++) {
+//			names.write[i] = StringName(member_names[i]);
+//		}
+//		Array dst_arr = Array(base_arr, size, struct_name, names);
+//
+//		PtrConstruct<Array>::construct(dst_arr, base);
+//	}
+//
+//	_FORCE_INLINE_ static int get_argument_count() { // TODO: should this be const?
+//		return 4;
+//	}
+//
+//	_FORCE_INLINE_ static Variant::Type get_argument_type(int p_arg) { // TODO: should this be const?
+//		switch (p_arg) {
+//			case 0: {
+//				return Variant::ARRAY;
+//			} break;
+//			case 1: {
+//				return Variant::INT;
+//			} break;
+//			case 2: {
+//				return Variant::STRING_NAME;
+//			} break;
+//			case 3: {
+//				return Variant::PACKED_STRING_ARRAY;
+//			} break;
+//			default: {
+//				return Variant::NIL;
+//			} break;
+//		}
+//	}
+//
+//	_FORCE_INLINE_ static Variant::Type get_base_type() { // TODO: should this be const?
+//		return Variant::ARRAY;
+//	}
+//};
+
 template <typename T>
 class VariantConstructorToArray {
 public:
diff --git a/core/variant/variant_setget.cpp b/core/variant/variant_setget.cpp
index 1652f81d9994..d53c7e214d2f 100644
--- a/core/variant/variant_setget.cpp
+++ b/core/variant/variant_setget.cpp
@@ -253,6 +253,13 @@ void Variant::set_named(const StringName &p_member, const Variant &p_value, bool
 	} else if (type == Variant::DICTIONARY) {
 		Dictionary &dict = *VariantGetInternalPtr<Dictionary>::get_ptr(this);
 		r_valid = dict.set(p_member, p_value);
+	} else if (type == Variant::ARRAY && is_struct()) {
+		Array &array = *VariantGetInternalPtr<Array>::get_ptr(this);
+		int index = array.find_member(p_member);
+		if (index >= 0) {
+			array.set(index, p_value);
+			r_valid = true;
+		}
 	} else {
 		r_valid = false;
 	}
@@ -288,6 +295,20 @@ Variant Variant::get_named(const StringName &p_member, bool &r_valid) const {
 				return *v;
 			}
 		} break;
+		case Variant::ARRAY: {
+			const Array *array = VariantGetInternalPtr<Array>::get_ptr(this);
+			if (!array->get_struct_info()) {
+				if (Variant::has_builtin_method(type, p_member)) {
+					r_valid = true;
+					return Callable(memnew(VariantCallable(*this, p_member)));
+				}
+			}
+			const Variant *v = array->getptr(p_member);
+			if (v) {
+				r_valid = true;
+				return *v;
+			}
+		} break;
 		default: {
 			if (Variant::has_builtin_method(type, p_member)) {
 				r_valid = true;
@@ -1252,28 +1273,45 @@ Variant Variant::get(const Variant &p_index, bool *r_valid, VariantGetError *err
 }
 
 void Variant::get_property_list(List<PropertyInfo> *p_list) const {
-	if (type == DICTIONARY) {
-		const Dictionary *dic = reinterpret_cast<const Dictionary *>(_data._mem);
-		List<Variant> keys;
-		dic->get_key_list(&keys);
-		for (const Variant &E : keys) {
-			if (E.is_string()) {
-				p_list->push_back(PropertyInfo(dic->get_valid(E).get_type(), E));
+	switch (type) {
+		case DICTIONARY: {
+			const Dictionary *dic = reinterpret_cast<const Dictionary *>(_data._mem);
+			List<Variant> keys;
+			dic->get_key_list(&keys);
+			for (const Variant &E : keys) {
+				if (E.is_string()) {
+					p_list->push_back(PropertyInfo(dic->get_valid(E).get_type(), E));
+				}
 			}
+			break;
 		}
-	} else if (type == OBJECT) {
-		Object *obj = get_validated_object();
-		ERR_FAIL_NULL(obj);
-		obj->get_property_list(p_list);
-
-	} else {
-		List<StringName> members;
-		get_member_list(type, &members);
-		for (const StringName &E : members) {
-			PropertyInfo pi;
-			pi.name = E;
-			pi.type = get_member_type(type, E);
-			p_list->push_back(pi);
+		case OBJECT: {
+			Object *obj = get_validated_object();
+			ERR_FAIL_NULL(obj);
+			obj->get_property_list(p_list);
+			break;
+		}
+		case ARRAY: {
+			const Array *array = reinterpret_cast<const Array *>(_data._mem);
+			// if not struct, continue on to default case, otherwise...
+			if (array->is_struct()) {
+				const StructInfo *struct_info = array->get_struct_info();
+				for (int32_t i = 0; i < struct_info->count; i++) {
+					p_list->push_back(PropertyInfo(struct_info->types[i], struct_info->names[i], PropertyHint::PROPERTY_HINT_NONE, "", PROPERTY_USAGE_DEFAULT, struct_info->class_names[i]));
+				}
+				break;
+			}
+			[[fallthrough]];
+		}
+		default: {
+			List<StringName> members;
+			get_member_list(type, &members);
+			for (const StringName &E : members) {
+				PropertyInfo pi;
+				pi.name = E;
+				pi.type = get_member_type(type, E);
+				p_list->push_back(pi);
+			}
 		}
 	}
 }
diff --git a/scene/resources/2d/tile_set.h b/scene/resources/2d/tile_set.h
index 15e1a16359e8..a2677a5beba8 100644
--- a/scene/resources/2d/tile_set.h
+++ b/scene/resources/2d/tile_set.h
@@ -152,8 +152,8 @@ class TileSet : public Resource {
 private:
 	struct CompatibilityShapeData {
 		Vector2i autotile_coords;
-		bool one_way;
-		float one_way_margin;
+		bool one_way = false; // TODO: I added these defaults to make the CI happy but I'm not sure if it will break anything
+		float one_way_margin = 1.0f;
 		Ref<Shape2D> shape;
 		Transform2D transform;
 	};
diff --git a/tests/core/variant/test_struct.h b/tests/core/variant/test_struct.h
new file mode 100644
index 000000000000..d7cf7c3a8a07
--- /dev/null
+++ b/tests/core/variant/test_struct.h
@@ -0,0 +1,395 @@
+/**************************************************************************/
+/*  test_struct.h                                                         */
+/**************************************************************************/
+/*                         This file is part of:                          */
+/*                             GODOT ENGINE                               */
+/*                        https://godotengine.org                         */
+/**************************************************************************/
+/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
+/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur.                  */
+/*                                                                        */
+/* Permission is hereby granted, free of charge, to any person obtaining  */
+/* a copy of this software and associated documentation files (the        */
+/* "Software"), to deal in the Software without restriction, including    */
+/* without limitation the rights to use, copy, modify, merge, publish,    */
+/* distribute, sublicense, and/or sell copies of the Software, and to     */
+/* permit persons to whom the Software is furnished to do so, subject to  */
+/* the following conditions:                                              */
+/*                                                                        */
+/* The above copyright notice and this permission notice shall be         */
+/* included in all copies or substantial portions of the Software.        */
+/*                                                                        */
+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,        */
+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF     */
+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. */
+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY   */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,   */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE      */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                 */
+/**************************************************************************/
+
+#ifndef TEST_STRUCT_H
+#define TEST_STRUCT_H
+
+#include "core/variant/array.h"
+#include "core/variant/struct.h"
+#include "core/variant/struct_generator.h"
+#include "core/variant/variant.h"
+#include "scene/main/node.h"
+#include "tests/test_macros.h"
+#include "tests/test_tools.h"
+
+// TODO: methods to structify:
+/*
+ * ClassDB::class_get_signal_list()
+ * ClassDB::class_get_property_list()
+ * ClassDB::class_get_method_list()
+ * CodeEdit::_filter_code_completion_candidates()
+ * CodeEdit::get_code_completion_options()
+ * DisplayServer::tts_get_voices()
+ * EditorExportPlugin::_get_export_options()
+ * EditorImportPlugin::_get_import_options()
+ * ScriptLanguage::CodeCompletionOption
+ * ResourceImporter::ImportOption
+ * EditorVCSInterface::DiffLine
+ * EditorVCSInterface::DiffHunk
+ * EditorVCSInterface::DiffFile
+ * EditorVCSInterface::Commit
+ * EditorVCSInterface::StatusFile
+ * EditorVCSInterface::_get_modified_files_data()
+ * EditorVCSInterface::_get_diff()
+ * EditorVCSInterface::_get_previous_commits()
+ * EditorVCSInterface::_get_line_diff()
+ * EditorVCSInterface::add_diff_hunks_into_diff_file()
+ * EditorVCSInterface::add_line_diffs_into_diff_hunk()
+ * Engine::get_author_info()
+ * Engine::get_copyright_info()
+ * Engine::get_donor_info()
+ * Engine::get_version_info()
+ * Font::get_opentype_features()
+ * Font::get_ot_name_strings()
+ * Font::get_supported_variation_list()
+ * Font::find_variation()
+ * Font::get_opentype_feature_overrides()
+ * GLTFCamera::to_dictionary()
+ * GLTFCamera::from_dictionary()
+ * GLTFLight::to_dictionary()
+ * GLTFLight::from_dictionary()
+ * GLTFPhysicsBody::to_dictionary()
+ * GLTFPhysicsBody::from_dictionary()
+ * GLTFPhysicsShape::to_dictionary()
+ * GLTFPhysicsShape::from_dictionary()
+ * Geometry2D::make_atlas()
+ * GraphEdit::get_connection_list()
+ * Image::compute_image_metrics()
+ * Image::data
+ * IP::get_local_interfaces()
+ * LightmapGIData::probe_data
+ * NavigationAgent2D::waypoint_reached()
+ * NavigationAgent2D::link_reached()
+ * NavigationAgent3D::waypoint_reached()
+ * NavigationAgent3D::link_reached()
+ * Object::get_property_list()
+ * Object::get_method_list()
+ * Object::get_signal_list()
+ * Object::get_signal_connection_list()
+ * Object::get_incoming_connections()
+ * OS::get_memory_info()
+ * PhysicsDirectSpaceState2D::get_rest_info()
+ * PhysicsDirectSpaceState2D::intersect_point()
+ * PhysicsDirectSpaceState2D::intersect_ray()
+ * PhysicsDirectSpaceState2D::intersect_shape()
+ * PhysicsDirectSpaceState3D::get_rest_info()
+ * PhysicsDirectSpaceState3D::intersect_point()
+ * PhysicsDirectSpaceState3D::intersect_ray()
+ * PhysicsDirectSpaceState3D::intersect_shape()
+ * PolygonPathFinder::data
+ * ProjectSettings::add_property_info()
+ * ProjectSettings::get_global_class_list()
+ * RenderingServer::mesh_add_surface()
+ * RenderingServer::mesh_get_surface()
+ * RenderingServer::get_shader_parameter_list()
+ * RenderingServer::mesh_create_from_surfaces()
+ * RenderingServer::instance_geometry_get_shader_parameter_list()
+ * Script::get_script_property_list()
+ * Script::get_script_method_list()
+ * Script::get_script_signal_list()
+ * ScriptLanguage::_get_method_info()
+ * ScriptLanguageExtension::_validate()
+ * ScriptLanguageExtension::_complete_code()
+ * ScriptLanguageExtension::_lookup_code()
+ * ScriptLanguageExtension::_debug_get_current_stack_info()
+ * ScriptLanguageExtension::_get_public_functions()
+ * ScriptLanguageExtension::_get_public_annotations()
+ * ScriptLanguageExtension::_debug_get_stack_level_locals()
+ * ScriptLanguageExtension::_debug_get_stack_level_members()
+ * ScriptLanguageExtension::_debug_get_globals()
+ * ScriptLanguageExtension::_get_built_in_templates()
+ * ScriptLanguageExtension::_get_public_constants()
+ * ScriptLanguageExtension::_get_public_annotations()
+ * ScriptLanguageExtension::_get_global_class_name()
+ * ScriptExtension::_get_documentation()
+ * ScriptExtension::_get_script_signal_list()
+ * ScriptExtension::_get_script_method_list()
+ * ScriptExtension::_get_script_property_list()
+ * TextServer::font_set_variation_coordinates()
+ * TextServer::font_get_variation_coordinates()
+ * TextServer::font_get_glyph_contours()
+ * TextServer::font_set_opentype_feature_overrides()
+ * TextServer::font_get_opentype_feature_overrides()
+ * TextServer::font_supported_feature_list()
+ * TextServer::font_supported_variation_list()
+ * TextServer::shaped_text_add_string()
+ * TextServer::shaped_set_span_update_font()
+ * TextServer::shaped_text_get_carets()
+ * TextServer::shaped_text_get_glyphs()
+ * TextServer::shaped_text_sort_logical()
+ * TextServer::shaped_text_get_ellipsis_glyphs()
+ * TextServerExtension::_font_set_variation_coordinates()
+ * TextServerExtension::_font_get_variation_coordinates()
+ * TextServerExtension::_font_get_glyph_contours()
+ * TextServerExtension::_font_set_opentype_feature_overrides()
+ * TextServerExtension::_font_get_opentype_feature_overrides()
+ * TextServerExtension::_font_supported_feature_list()
+ * TextServerExtension::_font_supported_variation_list()
+ * TextServerExtension::_shaped_text_add_string()
+ * TextServerExtension::_shaped_set_span_update_font()
+ * TextServerManager::get_interfaces()
+ * Time::get_datetime_dict_from_unix_time()
+ * Time::get_date_dict_from_unix_time()
+ * Time::get_time_dict_from_unix_time()
+ * Time::get_datetime_dict_from_datetime_string()
+ * Time::get_datetime_string_from_datetime_dict()
+ * Time::get_unix_time_from_datetime_dict()
+ * Time::get_datetime_dict_from_system()
+ * Time::get_date_dict_from_system()
+ * Time::get_time_dict_from_system()
+ * Time::get_time_zone_from_system()
+ * Tree::get_range_config()
+ * VisualShader::get_node_connections()
+ * WebRTCMultiplayerPeer::get_peer()
+ * WebRTCMultiplayerPeer::get_peers()
+ * WebRTCPeerConnection::initialize()
+ * WebRTCPeerConnection::create_data_channel()
+ * WebRTCPeerConnectionExtension::_initialize()
+ * WebRTCPeerConnectionExtension::_create_data_channel()
+ * XRInterface::get_system_info()
+ * XRInterfaceExtension::_get_system_info()
+ * XRServer::get_interfaces()
+ * XRServer::get_trackers()
+ *
+ *
+ * */
+
+namespace TestStruct {
+
+//TEST_CASE("[Struct] PropertyInfo") {
+//	Node *my_node = memnew(Node);
+//
+//	List<PropertyInfo> list;
+//	my_node->get_property_list(&list);
+//	PropertyInfo info = list.get(0);
+//
+//	TypedArray<Struct<PropertyInfo>> property_list = my_node->call(SNAME("get_property_list_as_structs"));
+//	Struct<PropertyInfo> prop = property_list[0];
+//
+//	SUBCASE("Equality") {
+//		CHECK_EQ(info.name, prop.get_member<struct PropertyInfo::name>());
+//		CHECK_EQ(info.class_name, prop.get_member<struct PropertyInfo::class_name>());
+//		CHECK_EQ(info.type, prop.get_member<struct PropertyInfo::type>());
+//		CHECK_EQ(info.hint, prop.get_member<struct PropertyInfo::hint>());
+//		CHECK_EQ(info.hint_string, prop.get_member<struct PropertyInfo::hint_string>());
+//		CHECK_EQ(info.usage, prop.get_member<struct PropertyInfo::usage>());
+//	}
+//
+//	SUBCASE("Duplication") {
+//		Variant var = prop;
+//		CHECK_EQ(var.get_type(), Variant::ARRAY);
+//		Variant var_dup = prop.duplicate();
+//		CHECK_EQ(var_dup.get_type(), Variant::ARRAY);
+//		CHECK_EQ(var, var_dup);
+//	}
+//
+//	SUBCASE("Setget Named") {
+//		Variant variant_prop = prop;
+//		bool valid = false;
+//		variant_prop.set_named(SNAME("name"), SNAME("Changed"), valid);
+//		CHECK_EQ(valid, true);
+//		Variant val = variant_prop.get_named(SNAME("name"), valid);
+//		CHECK_EQ(valid, true);
+//		CHECK_EQ((StringName)val, SNAME("Changed"));
+//
+//		val = variant_prop.get_named(SNAME("oops"), valid);
+//		CHECK_EQ(valid, false);
+//		CHECK_EQ(val, Variant());
+//
+//		variant_prop.set_named(SNAME("oops"), SNAME("oh no"), valid);
+//		CHECK_EQ(valid, false);
+//	}
+//	memdelete(my_node);
+//}
+
+TEST_CASE("[Struct] Validation") {
+	struct NamedInt {
+		STRUCT_DECLARE(NamedInt);
+		STRUCT_MEMBER_PRIMITIVE(String, name, String());
+		STRUCT_MEMBER_PRIMITIVE(int, value, 0);
+		STRUCT_LAYOUT(NamedInt, struct name, struct value);
+	};
+
+	Struct<NamedInt> named_int;
+	named_int["name"] = "Godot";
+	named_int["value"] = 4;
+	CHECK_EQ(((Variant)named_int).stringify(), "[name: \"Godot\", value: 4]");
+
+	SUBCASE("Self Equal") {
+		CHECK(named_int.is_same_typed(named_int));
+		Variant variant_named_int = named_int;
+		CHECK(named_int.is_same_typed(variant_named_int));
+		Struct<NamedInt> same_named_int = variant_named_int;
+		CHECK_EQ(named_int, same_named_int);
+	}
+
+	SUBCASE("Assignment") {
+		Struct<NamedInt> a_match = named_int;
+		CHECK_EQ(named_int, a_match);
+		Array not_a_match;
+
+		ERR_PRINT_OFF;
+		named_int.set_named("name", 4);
+		CHECK_MESSAGE(named_int["name"] == "Godot", "assigned an int to a string member");
+
+		named_int.set_named("value", "Godot");
+		CHECK_MESSAGE((int)named_int["value"] == 4, "assigned a string to an int member");
+
+		named_int = not_a_match;
+		CHECK_MESSAGE(named_int != not_a_match, "assigned an empty array to a struct");
+
+		not_a_match.resize(2);
+		named_int.assign(not_a_match);
+		CHECK_MESSAGE(named_int != not_a_match, "assigned an array with the wrong size");
+
+		not_a_match[0] = 4;
+		not_a_match[1] = "Godot";
+		named_int.assign(not_a_match);
+		CHECK_MESSAGE(named_int != not_a_match, "assigned an array with mismatched types");
+
+		Array also_a_match;
+		also_a_match.resize(2);
+		also_a_match[0] = "Godooot";
+		also_a_match[1] = 5;
+		named_int = not_a_match;
+		CHECK_MESSAGE(named_int != not_a_match, "assigned a non-struct to a struct using '=' operator");
+		ERR_PRINT_ON;
+
+		named_int.assign(also_a_match);
+		CHECK_MESSAGE(named_int == also_a_match, "failed to assign an array with correct types using 'assign' function");
+	}
+}
+
+TEST_CASE("[Struct] Nesting") {
+	struct BasicStruct {
+		STRUCT_DECLARE(BasicStruct);
+		STRUCT_MEMBER_PRIMITIVE(int, int_val, 4);
+		STRUCT_MEMBER_PRIMITIVE(float, float_val, 5.5f);
+		STRUCT_LAYOUT(BasicStruct, struct int_val, struct float_val);
+		BasicStruct() {};
+	};
+	struct BasicStructLookalike {
+		STRUCT_DECLARE(BasicStructLookalike);
+		STRUCT_MEMBER_PRIMITIVE(int, int_val, 4);
+		STRUCT_MEMBER_PRIMITIVE(float, float_val, 5.5f);
+		STRUCT_LAYOUT(BasicStructLookalike, struct int_val, struct float_val);
+	};
+	struct NestedStruct {
+		STRUCT_DECLARE(NestedStruct);
+		STRUCT_MEMBER_CLASS_POINTER(Node, node, nullptr);
+		STRUCT_MEMBER_STRUCT(BasicStruct, value, BasicStruct());
+		STRUCT_LAYOUT(NestedStruct, struct node, struct value);
+	};
+
+	REQUIRE_EQ(NestedStruct::Layout::struct_member_count, 2);
+	CHECK_EQ(NestedStruct::Layout::get_struct_info().struct_member_infos[0], nullptr);
+	CHECK_EQ(NestedStruct::Layout::get_struct_info().struct_member_infos[1]->count, 2);
+
+	Struct<BasicStruct> basic_struct;
+	Struct<BasicStructLookalike> basic_struct_lookalike;
+	Struct<NestedStruct> nested_struct;
+
+	SUBCASE("Defaults") {
+		CHECK_EQ(basic_struct.get_member<struct BasicStruct::int_val>(), 4);
+		CHECK_EQ(basic_struct.get_member<struct BasicStruct::float_val>(), 5.5);
+
+		CHECK_EQ(nested_struct.get_member<struct NestedStruct::node>(), nullptr);
+		CHECK_EQ(Struct<BasicStruct>(nested_struct.get_member<struct NestedStruct::value>()), basic_struct);
+	}
+
+	SUBCASE("Assignment") {
+		basic_struct.set_member<struct BasicStruct::int_val>(1);
+		basic_struct.set_member<struct BasicStruct::float_val>(3.14);
+
+		basic_struct_lookalike.set_member<struct BasicStructLookalike::int_val>(2);
+		basic_struct_lookalike.set_member<struct BasicStructLookalike::float_val>(2.7);
+
+		Node *node = memnew(Node);
+		nested_struct.set_member<struct NestedStruct::node>(node);
+		nested_struct.set_member<struct NestedStruct::value>(basic_struct);
+
+		CHECK_EQ(nested_struct.get_member<struct NestedStruct::node>(), node);
+		Struct<BasicStruct> basic_struct_match = nested_struct.get_member<struct NestedStruct::value>();
+		CHECK_EQ(basic_struct_match, basic_struct);
+		CHECK_EQ(basic_struct_match.get_member<struct BasicStruct::int_val>(), basic_struct.get_member<struct BasicStruct::int_val>());
+		CHECK_EQ(basic_struct_match.get_member<struct BasicStruct::float_val>(), basic_struct.get_member<struct BasicStruct::float_val>());
+
+		ERR_PRINT_OFF;
+		nested_struct.set_named("value", basic_struct_lookalike);
+		CHECK_EQ(nested_struct["value"], basic_struct);
+		ERR_PRINT_ON;
+
+		memdelete(node);
+	}
+
+	SUBCASE("Typed Array of Struct") {
+		TypedArray<Struct<BasicStruct>> array;
+		Struct<BasicStruct> basic_struct_0;
+		basic_struct_0["int_val"] = 1;
+		basic_struct_0["float_val"] = 3.14;
+		Struct<BasicStruct> basic_struct_1;
+		basic_struct_1["int_val"] = 2;
+		basic_struct_1["float_val"] = 2.7;
+		array.push_back(basic_struct_0);
+		array.push_back(basic_struct_1);
+		CHECK_EQ(array[0], basic_struct_0);
+		CHECK_EQ(array[1], basic_struct_1);
+
+		ERR_PRINT_OFF;
+		array.push_back(0);
+		CHECK_EQ(array.size(), 2);
+
+		basic_struct_lookalike["int_val"] = 3;
+		basic_struct_lookalike["float_val"] = 5.4;
+		array.push_back(basic_struct_lookalike);
+		CHECK_EQ(array.size(), 2);
+		ERR_PRINT_ON;
+
+		TypedArray<Struct<BasicStruct>> array_of_defaults;
+		array_of_defaults.resize(2);
+		CHECK_EQ(array_of_defaults[0], Variant(Struct<BasicStruct>()));
+		CHECK_EQ(array_of_defaults[1], Variant(Struct<BasicStruct>()));
+	}
+}
+
+TEST_CASE("[Struct] ClassDB") {
+	const StructInfo *struct_info = ::ClassDB::get_struct_info(SNAME("Object"), SNAME("PropertyInfo"));
+	REQUIRE(struct_info);
+	CHECK_EQ(struct_info->count, 6);
+	CHECK_EQ(struct_info->name, "Object.PropertyInfo");
+	CHECK_EQ(struct_info->names[3], "hint");
+	CHECK_EQ(struct_info->types[3], Variant::INT);
+	CHECK_EQ(struct_info->class_names[3], "");
+	CHECK_EQ((int)struct_info->default_values[3], PROPERTY_HINT_NONE);
+}
+
+} // namespace TestStruct
+
+#endif // TEST_STRUCT_H
diff --git a/tests/test_main.cpp b/tests/test_main.cpp
index 12ff3ad4bc9e..fdbe7482646a 100644
--- a/tests/test_main.cpp
+++ b/tests/test_main.cpp
@@ -100,6 +100,7 @@
 #include "tests/core/variant/test_array.h"
 #include "tests/core/variant/test_callable.h"
 #include "tests/core/variant/test_dictionary.h"
+#include "tests/core/variant/test_struct.h"
 #include "tests/core/variant/test_variant.h"
 #include "tests/core/variant/test_variant_utility.h"
 #include "tests/scene/test_animation.h"