7 files changed, 18 insertions, 9 deletions
diff --git a/scene/resources/environment.cpp b/scene/resources/environment.cpp
index 285b11fefd..6790f02128 100644
--- a/scene/resources/environment.cpp
+++ b/scene/resources/environment.cpp
@@ -815,6 +815,7 @@ float Environment::get_fog_height_curve() const {
 }
 
 #ifndef DISABLE_DEPRECATED
+// Kept for compatibility from 3.x to 4.0.
 bool Environment::_set(const StringName &p_name, const Variant &p_value) {
 	if (p_name == "background_sky") {
 		set_sky(p_value);
@@ -822,6 +823,10 @@ bool Environment::_set(const StringName &p_name, const Variant &p_value) {
 	} else if (p_name == "background_sky_custom_fov") {
 		set_sky_custom_fov(p_value);
 		return true;
+	} else if (p_name == "background_sky_orientation") {
+		Vector3 euler = p_value.operator Basis().get_euler();
+		set_sky_rotation(euler);
+		return true;
 	} else {
 		return false;
 	}
diff --git a/scene/resources/environment.h b/scene/resources/environment.h
index 4360ceeca3..f9fe26f792 100644
--- a/scene/resources/environment.h
+++ b/scene/resources/environment.h
@@ -170,6 +170,7 @@ protected:
 	static void _bind_methods();
 	virtual void _validate_property(PropertyInfo &property) const;
 #ifndef DISABLE_DEPRECATED
+	// Kept for compatibility from 3.x to 4.0.
 	bool _set(const StringName &p_name, const Variant &p_value);
 #endif
 
diff --git a/scene/resources/material.cpp b/scene/resources/material.cpp
index 1255bb8a87..01e3c4c930 100644
--- a/scene/resources/material.cpp
+++ b/scene/resources/material.cpp
@@ -2598,8 +2598,9 @@ BaseMaterial3D::~BaseMaterial3D() {
 }
 
 //////////////////////
-#ifndef DISABLE_DEPRECATED
 
+#ifndef DISABLE_DEPRECATED
+// Kept for compatibility from 3.x to 4.0.
 bool StandardMaterial3D::_set(const StringName &p_name, const Variant &p_value) {
 	if (p_name == "flags_transparent") {
 		bool transparent = p_value;
@@ -2686,5 +2687,4 @@ bool StandardMaterial3D::_set(const StringName &p_name, const Variant &p_value)
 
 	return false;
 }
-
-#endif
+#endif // DISABLE_DEPRECATED
diff --git a/scene/resources/material.h b/scene/resources/material.h
index 328c868f2a..8c5a648058 100644
--- a/scene/resources/material.h
+++ b/scene/resources/material.h
@@ -697,6 +697,7 @@ class StandardMaterial3D : public BaseMaterial3D {
 	GDCLASS(StandardMaterial3D, BaseMaterial3D)
 protected:
 #ifndef DISABLE_DEPRECATED
+	// Kept for compatibility from 3.x to 4.0.
 	bool _set(const StringName &p_name, const Variant &p_value);
 #endif
 
diff --git a/scene/resources/mesh.cpp b/scene/resources/mesh.cpp
index 6049d96fee..58463abad8 100644
--- a/scene/resources/mesh.cpp
+++ b/scene/resources/mesh.cpp
@@ -743,6 +743,7 @@ bool ArrayMesh::_set(const StringName &p_name, const Variant &p_value) {
 	}
 
 #ifndef DISABLE_DEPRECATED
+	// Kept for compatibility from 3.x to 4.0.
 	if (!sname.begins_with("surfaces"))
 		return false;
 
@@ -841,8 +842,7 @@ bool ArrayMesh::_set(const StringName &p_name, const Variant &p_value) {
 
 		return true;
 	}
-
-#endif
+#endif // DISABLE_DEPRECATED
 
 	return false;
 }
diff --git a/scene/resources/multimesh.cpp b/scene/resources/multimesh.cpp
index 946511c766..9c34ae0504 100644
--- a/scene/resources/multimesh.cpp
+++ b/scene/resources/multimesh.cpp
@@ -29,9 +29,11 @@
 /*************************************************************************/
 
 #include "multimesh.h"
+
 #include "servers/visual_server.h"
 
 #ifndef DISABLE_DEPRECATED
+// Kept for compatibility from 3.x to 4.0.
 
 void MultiMesh::_set_transform_array(const PoolVector<Vector3> &p_array) {
 	if (transform_format != TRANSFORM_3D)
@@ -193,8 +195,8 @@ PoolVector<Color> MultiMesh::_get_custom_data_array() const {
 
 	return custom_datas;
 }
+#endif // DISABLE_DEPRECATED
 
-#endif
 void MultiMesh::set_buffer(const PoolVector<float> &p_buffer) {
 	VS::get_singleton()->multimesh_set_buffer(multimesh, p_buffer);
 }
@@ -351,8 +353,7 @@ void MultiMesh::_bind_methods() {
 	ADD_PROPERTY(PropertyInfo(Variant::POOL_REAL_ARRAY, "buffer", PROPERTY_HINT_NONE), "set_buffer", "get_buffer");
 
 #ifndef DISABLE_DEPRECATED
-	//kept for compatibility
-
+	// Kept for compatibility from 3.x to 4.0.
 	ClassDB::bind_method(D_METHOD("_set_transform_array"), &MultiMesh::_set_transform_array);
 	ClassDB::bind_method(D_METHOD("_get_transform_array"), &MultiMesh::_get_transform_array);
 	ClassDB::bind_method(D_METHOD("_set_transform_2d_array"), &MultiMesh::_set_transform_2d_array);
@@ -367,6 +368,7 @@ void MultiMesh::_bind_methods() {
 	ADD_PROPERTY(PropertyInfo(Variant::POOL_COLOR_ARRAY, "color_array", PROPERTY_HINT_NONE, "", 0), "_set_color_array", "_get_color_array");
 	ADD_PROPERTY(PropertyInfo(Variant::POOL_COLOR_ARRAY, "custom_data_array", PROPERTY_HINT_NONE, "", 0), "_set_custom_data_array", "_get_custom_data_array");
 #endif
+
 	BIND_ENUM_CONSTANT(TRANSFORM_2D);
 	BIND_ENUM_CONSTANT(TRANSFORM_3D);
 }
diff --git a/scene/resources/multimesh.h b/scene/resources/multimesh.h
index e7d62d0993..5423e66358 100644
--- a/scene/resources/multimesh.h
+++ b/scene/resources/multimesh.h
@@ -58,7 +58,7 @@ protected:
 	static void _bind_methods();
 
 #ifndef DISABLE_DEPRECATED
-
+	// Kept for compatibility from 3.x to 4.0.
 	void _set_transform_array(const PoolVector<Vector3> &p_array);
 	PoolVector<Vector3> _get_transform_array() const;