1 files changed, 58 insertions, 102 deletions

diff --git a/modules/gridmap/grid_map.cpp b/modules/gridmap/grid_map.cpp
index 0dbefbb39f..2975a97bfe 100644
--- a/modules/gridmap/grid_map.cpp
+++ b/modules/gridmap/grid_map.cpp
@@ -40,22 +40,18 @@
 #include "servers/rendering_server.h"
 
 bool GridMap::_set(const StringName &p_name, const Variant &p_value) {
-
 	String name = p_name;
 
 	if (name == "data") {
-
 		Dictionary d = p_value;
 
 		if (d.has("cells")) {
-
 			Vector<int> cells = d["cells"];
 			int amount = cells.size();
 			const int *r = cells.ptr();
 			ERR_FAIL_COND_V(amount % 3, false); // not even
 			cell_map.clear();
 			for (int i = 0; i < amount / 3; i++) {
-
 				IndexKey ik;
 				ik.key = decode_uint64((const uint8_t *)&r[i * 3]);
 				Cell cell;
@@ -67,7 +63,6 @@ bool GridMap::_set(const StringName &p_name, const Variant &p_value) {
 		_recreate_octant_data();
 
 	} else if (name == "baked_meshes") {
-
 		clear_baked_meshes();
 
 		Array meshes = p_value;
@@ -96,11 +91,9 @@ bool GridMap::_set(const StringName &p_name, const Variant &p_value) {
 }
 
 bool GridMap::_get(const StringName &p_name, Variant &r_ret) const {
-
 	String name = p_name;
 
 	if (name == "data") {
-
 		Dictionary d;
 
 		Vector<int> cells;
@@ -109,7 +102,6 @@ bool GridMap::_get(const StringName &p_name, Variant &r_ret) const {
 			int *w = cells.ptrw();
 			int i = 0;
 			for (Map<IndexKey, Cell>::Element *E = cell_map.front(); E; E = E->next(), i++) {
-
 				encode_uint64(E->key().key, (uint8_t *)&w[i * 3]);
 				encode_uint32(E->get().cell, (uint8_t *)&w[i * 3 + 2]);
 			}
@@ -119,7 +111,6 @@ bool GridMap::_get(const StringName &p_name, Variant &r_ret) const {
 
 		r_ret = d;
 	} else if (name == "baked_meshes") {
-
 		Array ret;
 		ret.resize(baked_meshes.size());
 		for (int i = 0; i < baked_meshes.size(); i++) {
@@ -127,14 +118,14 @@ bool GridMap::_get(const StringName &p_name, Variant &r_ret) const {
 		}
 		r_ret = ret;
 
-	} else
+	} else {
 		return false;
+	}
 
 	return true;
 }
 
 void GridMap::_get_property_list(List<PropertyInfo> *p_list) const {
-
 	if (baked_meshes.size()) {
 		p_list->push_back(PropertyInfo(Variant::ARRAY, "baked_meshes", PROPERTY_HINT_NONE, "", PROPERTY_USAGE_STORAGE));
 	}
@@ -143,71 +134,65 @@ void GridMap::_get_property_list(List<PropertyInfo> *p_list) const {
 }
 
 void GridMap::set_collision_layer(uint32_t p_layer) {
-
 	collision_layer = p_layer;
 	_reset_physic_bodies_collision_filters();
 }
 
 uint32_t GridMap::get_collision_layer() const {
-
 	return collision_layer;
 }
 
 void GridMap::set_collision_mask(uint32_t p_mask) {
-
 	collision_mask = p_mask;
 	_reset_physic_bodies_collision_filters();
 }
 
 uint32_t GridMap::get_collision_mask() const {
-
 	return collision_mask;
 }
 
 void GridMap::set_collision_mask_bit(int p_bit, bool p_value) {
-
 	uint32_t mask = get_collision_mask();
-	if (p_value)
+	if (p_value) {
 		mask |= 1 << p_bit;
-	else
+	} else {
 		mask &= ~(1 << p_bit);
+	}
 	set_collision_mask(mask);
 }
 
 bool GridMap::get_collision_mask_bit(int p_bit) const {
-
 	return get_collision_mask() & (1 << p_bit);
 }
 
 void GridMap::set_collision_layer_bit(int p_bit, bool p_value) {
-
 	uint32_t mask = get_collision_layer();
-	if (p_value)
+	if (p_value) {
 		mask |= 1 << p_bit;
-	else
+	} else {
 		mask &= ~(1 << p_bit);
+	}
 	set_collision_layer(mask);
 }
 
 bool GridMap::get_collision_layer_bit(int p_bit) const {
-
 	return get_collision_layer() & (1 << p_bit);
 }
 
 void GridMap::set_mesh_library(const Ref<MeshLibrary> &p_mesh_library) {
-
-	if (!mesh_library.is_null())
+	if (!mesh_library.is_null()) {
 		mesh_library->unregister_owner(this);
+	}
 	mesh_library = p_mesh_library;
-	if (!mesh_library.is_null())
+	if (!mesh_library.is_null()) {
 		mesh_library->register_owner(this);
+	}
 
 	_recreate_octant_data();
 	_change_notify("mesh_library");
 }
 
 Ref<MeshLibrary> GridMap::get_mesh_library() const {
-
 	return mesh_library;
 }
 
@@ -217,24 +202,22 @@ void GridMap::set_cell_size(const Vector3 &p_size) {
 	_recreate_octant_data();
 	emit_signal("cell_size_changed", cell_size);
 }
-Vector3 GridMap::get_cell_size() const {
 
+Vector3 GridMap::get_cell_size() const {
 	return cell_size;
 }
 
 void GridMap::set_octant_size(int p_size) {
-
 	ERR_FAIL_COND(p_size == 0);
 	octant_size = p_size;
 	_recreate_octant_data();
 }
-int GridMap::get_octant_size() const {
 
+int GridMap::get_octant_size() const {
 	return octant_size;
 }
 
 void GridMap::set_center_x(bool p_enable) {
-
 	center_x = p_enable;
 	_recreate_octant_data();
 }
@@ -244,7 +227,6 @@ bool GridMap::get_center_x() const {
 }
 
 void GridMap::set_center_y(bool p_enable) {
-
 	center_y = p_enable;
 	_recreate_octant_data();
 }
@@ -254,7 +236,6 @@ bool GridMap::get_center_y() const {
 }
 
 void GridMap::set_center_z(bool p_enable) {
-
 	center_z = p_enable;
 	_recreate_octant_data();
 }
@@ -264,7 +245,6 @@ bool GridMap::get_center_z() const {
 }
 
 void GridMap::set_cell_item(int p_x, int p_y, int p_z, int p_item, int p_rot) {
-
 	if (baked_meshes.size() && !recreating_octants) {
 		//if you set a cell item, baked meshes go good bye
 		clear_baked_meshes();
@@ -313,7 +293,6 @@ void GridMap::set_cell_item(int p_x, int p_y, int p_z, int p_item, int p_rot) {
 		SceneTree *st = SceneTree::get_singleton();
 
 		if (st && st->is_debugging_collisions_hint()) {
-
 			g->collision_debug = RenderingServer::get_singleton()->mesh_create();
 			g->collision_debug_instance = RenderingServer::get_singleton()->instance_create();
 			RenderingServer::get_singleton()->instance_set_base(g->collision_debug_instance, g->collision_debug);
@@ -340,7 +319,6 @@ void GridMap::set_cell_item(int p_x, int p_y, int p_z, int p_item, int p_rot) {
 }
 
 int GridMap::get_cell_item(int p_x, int p_y, int p_z) const {
-
 	ERR_FAIL_INDEX_V(ABS(p_x), 1 << 20, INVALID_CELL_ITEM);
 	ERR_FAIL_INDEX_V(ABS(p_y), 1 << 20, INVALID_CELL_ITEM);
 	ERR_FAIL_INDEX_V(ABS(p_z), 1 << 20, INVALID_CELL_ITEM);
@@ -350,13 +328,13 @@ int GridMap::get_cell_item(int p_x, int p_y, int p_z) const {
 	key.y = p_y;
 	key.z = p_z;
 
-	if (!cell_map.has(key))
+	if (!cell_map.has(key)) {
 		return INVALID_CELL_ITEM;
+	}
 	return cell_map[key].item;
 }
 
 int GridMap::get_cell_item_orientation(int p_x, int p_y, int p_z) const {
-
 	ERR_FAIL_INDEX_V(ABS(p_x), 1 << 20, -1);
 	ERR_FAIL_INDEX_V(ABS(p_y), 1 << 20, -1);
 	ERR_FAIL_INDEX_V(ABS(p_z), 1 << 20, -1);
@@ -366,8 +344,9 @@ int GridMap::get_cell_item_orientation(int p_x, int p_y, int p_z) const {
 	key.y = p_y;
 	key.z = p_z;
 
-	if (!cell_map.has(key))
+	if (!cell_map.has(key)) {
 		return -1;
+	}
 	return cell_map[key].rot;
 }
 
@@ -389,7 +368,6 @@ Vector3 GridMap::map_to_world(int p_x, int p_y, int p_z) const {
 }
 
 void GridMap::_octant_transform(const OctantKey &p_key) {
-
 	ERR_FAIL_COND(!octant_map.has(p_key));
 	Octant &g = *octant_map[p_key];
 	PhysicsServer3D::get_singleton()->body_set_state(g.static_body, PhysicsServer3D::BODY_STATE_TRANSFORM, get_global_transform());
@@ -406,15 +384,15 @@ void GridMap::_octant_transform(const OctantKey &p_key) {
 bool GridMap::_octant_update(const OctantKey &p_key) {
 	ERR_FAIL_COND_V(!octant_map.has(p_key), false);
 	Octant &g = *octant_map[p_key];
-	if (!g.dirty)
+	if (!g.dirty) {
 		return false;
+	}
 
 	//erase body shapes
 	PhysicsServer3D::get_singleton()->body_clear_shapes(g.static_body);
 
 	//erase body shapes debug
 	if (g.collision_debug.is_valid()) {
-
 		RS::get_singleton()->mesh_clear(g.collision_debug);
 	}
 
@@ -427,7 +405,6 @@ bool GridMap::_octant_update(const OctantKey &p_key) {
 	//erase multimeshes
 
 	for (int i = 0; i < g.multimesh_instances.size(); i++) {
-
 		RS::get_singleton()->free(g.multimesh_instances[i].instance);
 		RS::get_singleton()->free(g.multimesh_instances[i].multimesh);
 	}
@@ -450,12 +427,12 @@ bool GridMap::_octant_update(const OctantKey &p_key) {
 	Map<int, List<Pair<Transform, IndexKey>>> multimesh_items;
 
 	for (Set<IndexKey>::Element *E = g.cells.front(); E; E = E->next()) {
-
 		ERR_CONTINUE(!cell_map.has(E->get()));
 		const Cell &c = cell_map[E->get()];
 
-		if (!mesh_library.is_valid() || !mesh_library->has_item(c.item))
+		if (!mesh_library.is_valid() || !mesh_library->has_item(c.item)) {
 			continue;
+		}
 
 		Vector3 cellpos = Vector3(E->get().x, E->get().y, E->get().z);
 		Vector3 ofs = _get_offset();
@@ -482,8 +459,9 @@ bool GridMap::_octant_update(const OctantKey &p_key) {
 		// add the item's shape at given xform to octant's static_body
 		for (int i = 0; i < shapes.size(); i++) {
 			// add the item's shape
-			if (!shapes[i].shape.is_valid())
+			if (!shapes[i].shape.is_valid()) {
 				continue;
+			}
 			PhysicsServer3D::get_singleton()->body_add_shape(g.static_body, shapes[i].shape->get_rid(), xform * shapes[i].local_transform);
 			if (g.collision_debug.is_valid()) {
 				shapes.write[i].shape->add_vertices_to_array(col_debug, xform * shapes[i].local_transform);
@@ -509,7 +487,6 @@ bool GridMap::_octant_update(const OctantKey &p_key) {
 
 	//update multimeshes, only if not baked
 	if (baked_meshes.size() == 0) {
-
 		for (Map<int, List<Pair<Transform, IndexKey>>>::Element *E = multimesh_items.front(); E; E = E->next()) {
 			Octant::MultimeshInstance mmi;
 
@@ -548,7 +525,6 @@ bool GridMap::_octant_update(const OctantKey &p_key) {
 	}
 
 	if (col_debug.size()) {
-
 		Array arr;
 		arr.resize(RS::ARRAY_MAX);
 		arr[RS::ARRAY_VERTEX] = col_debug;
@@ -573,7 +549,6 @@ void GridMap::_reset_physic_bodies_collision_filters() {
 }
 
 void GridMap::_octant_enter_world(const OctantKey &p_key) {
-
 	ERR_FAIL_COND(!octant_map.has(p_key));
 	Octant &g = *octant_map[p_key];
 	PhysicsServer3D::get_singleton()->body_set_state(g.static_body, PhysicsServer3D::BODY_STATE_TRANSFORM, get_global_transform());
@@ -591,7 +566,6 @@ void GridMap::_octant_enter_world(const OctantKey &p_key) {
 
 	if (navigation && mesh_library.is_valid()) {
 		for (Map<IndexKey, Octant::NavMesh>::Element *F = g.navmesh_ids.front(); F; F = F->next()) {
-
 			if (cell_map.has(F->key()) && F->get().region.is_valid() == false) {
 				Ref<NavigationMesh> nm = mesh_library->get_item_navmesh(cell_map[F->key()].item);
 				if (nm.is_valid()) {
@@ -607,14 +581,12 @@ void GridMap::_octant_enter_world(const OctantKey &p_key) {
 }
 
 void GridMap::_octant_exit_world(const OctantKey &p_key) {
-
 	ERR_FAIL_COND(!octant_map.has(p_key));
 	Octant &g = *octant_map[p_key];
 	PhysicsServer3D::get_singleton()->body_set_state(g.static_body, PhysicsServer3D::BODY_STATE_TRANSFORM, get_global_transform());
 	PhysicsServer3D::get_singleton()->body_set_space(g.static_body, RID());
 
 	if (g.collision_debug_instance.is_valid()) {
-
 		RS::get_singleton()->instance_set_scenario(g.collision_debug_instance, RID());
 	}
 
@@ -624,7 +596,6 @@ void GridMap::_octant_exit_world(const OctantKey &p_key) {
 
 	if (navigation) {
 		for (Map<IndexKey, Octant::NavMesh>::Element *F = g.navmesh_ids.front(); F; F = F->next()) {
-
 			if (F->get().region.is_valid()) {
 				NavigationServer3D::get_singleton()->free(F->get().region);
 				F->get().region = RID();
@@ -634,14 +605,15 @@ void GridMap::_octant_exit_world(const OctantKey &p_key) {
 }
 
 void GridMap::_octant_clean_up(const OctantKey &p_key) {
-
 	ERR_FAIL_COND(!octant_map.has(p_key));
 	Octant &g = *octant_map[p_key];
 
-	if (g.collision_debug.is_valid())
+	if (g.collision_debug.is_valid()) {
 		RS::get_singleton()->free(g.collision_debug);
-	if (g.collision_debug_instance.is_valid())
+	}
+	if (g.collision_debug_instance.is_valid()) {
 		RS::get_singleton()->free(g.collision_debug_instance);
+	}
 
 	PhysicsServer3D::get_singleton()->free(g.static_body);
 
@@ -654,7 +626,6 @@ void GridMap::_octant_clean_up(const OctantKey &p_key) {
 	//erase multimeshes
 
 	for (int i = 0; i < g.multimesh_instances.size(); i++) {
-
 		RS::get_singleton()->free(g.multimesh_instances[i].instance);
 		RS::get_singleton()->free(g.multimesh_instances[i].multimesh);
 	}
@@ -662,11 +633,8 @@ void GridMap::_octant_clean_up(const OctantKey &p_key) {
 }
 
 void GridMap::_notification(int p_what) {
-
 	switch (p_what) {
-
 		case NOTIFICATION_ENTER_WORLD: {
-
 			Node3D *c = this;
 			while (c) {
 				navigation = Object::cast_to<Navigation3D>(c);
@@ -690,10 +658,10 @@ void GridMap::_notification(int p_what) {
 
 		} break;
 		case NOTIFICATION_TRANSFORM_CHANGED: {
-
 			Transform new_xform = get_global_transform();
-			if (new_xform == last_transform)
+			if (new_xform == last_transform) {
 				break;
+			}
 			//update run
 			for (Map<OctantKey, Octant *>::Element *E = octant_map.front(); E; E = E->next()) {
 				_octant_transform(E->key());
@@ -707,7 +675,6 @@ void GridMap::_notification(int p_what) {
 
 		} break;
 		case NOTIFICATION_EXIT_WORLD: {
-
 			for (Map<OctantKey, Octant *>::Element *E = octant_map.front(); E; E = E->next()) {
 				_octant_exit_world(E->key());
 			}
@@ -729,8 +696,9 @@ void GridMap::_notification(int p_what) {
 }
 
 void GridMap::_update_visibility() {
-	if (!is_inside_tree())
+	if (!is_inside_tree()) {
 		return;
+	}
 
 	_change_notify("visible");
 
@@ -744,31 +712,29 @@ void GridMap::_update_visibility() {
 }
 
 void GridMap::_queue_octants_dirty() {
-
-	if (awaiting_update)
+	if (awaiting_update) {
 		return;
+	}
 
 	MessageQueue::get_singleton()->push_call(this, "_update_octants_callback");
 	awaiting_update = true;
 }
 
 void GridMap::_recreate_octant_data() {
-
 	recreating_octants = true;
 	Map<IndexKey, Cell> cell_copy = cell_map;
 	_clear_internal();
 	for (Map<IndexKey, Cell>::Element *E = cell_copy.front(); E; E = E->next()) {
-
 		set_cell_item(E->key().x, E->key().y, E->key().z, E->get().item, E->get().rot);
 	}
 	recreating_octants = false;
 }
 
 void GridMap::_clear_internal() {
-
 	for (Map<OctantKey, Octant *>::Element *E = octant_map.front(); E; E = E->next()) {
-		if (is_inside_world())
+		if (is_inside_world()) {
 			_octant_exit_world(E->key());
+		}
 
 		_octant_clean_up(E->key());
 		memdelete(E->get());
@@ -779,24 +745,21 @@ void GridMap::_clear_internal() {
 }
 
 void GridMap::clear() {
-
 	_clear_internal();
 	clear_baked_meshes();
 }
 
 void GridMap::resource_changed(const RES &p_res) {
-
 	_recreate_octant_data();
 }
 
 void GridMap::_update_octants_callback() {
-
-	if (!awaiting_update)
+	if (!awaiting_update) {
 		return;
+	}
 
 	List<OctantKey> to_delete;
 	for (Map<OctantKey, Octant *>::Element *E = octant_map.front(); E; E = E->next()) {
-
 		if (_octant_update(E->key())) {
 			to_delete.push_back(E->key());
 		}
@@ -812,7 +775,6 @@ void GridMap::_update_octants_callback() {
 }
 
 void GridMap::_bind_methods() {
-
 	ClassDB::bind_method(D_METHOD("set_collision_layer", "layer"), &GridMap::set_collision_layer);
 	ClassDB::bind_method(D_METHOD("get_collision_layer"), &GridMap::get_collision_layer);
 
@@ -885,11 +847,12 @@ void GridMap::_bind_methods() {
 }
 
 void GridMap::set_clip(bool p_enabled, bool p_clip_above, int p_floor, Vector3::Axis p_axis) {
-
-	if (!p_enabled && !clip)
+	if (!p_enabled && !clip) {
 		return;
-	if (clip && p_enabled && clip_floor == p_floor && p_clip_above == clip_above && p_axis == clip_axis)
+	}
+	if (clip && p_enabled && clip_floor == p_floor && p_clip_above == clip_above && p_axis == clip_axis) {
 		return;
+	}
 
 	clip = p_enabled;
 	clip_floor = p_floor;
@@ -898,7 +861,6 @@ void GridMap::set_clip(bool p_enabled, bool p_clip_above, int p_floor, Vector3::
 
 	//make it all update
 	for (Map<OctantKey, Octant *>::Element *E = octant_map.front(); E; E = E->next()) {
-
 		Octant *g = E->get();
 		g->dirty = true;
 	}
@@ -907,18 +869,15 @@ void GridMap::set_clip(bool p_enabled, bool p_clip_above, int p_floor, Vector3::
 }
 
 void GridMap::set_cell_scale(float p_scale) {
-
 	cell_scale = p_scale;
 	_recreate_octant_data();
 }
 
 float GridMap::get_cell_scale() const {
-
 	return cell_scale;
 }
 
 Array GridMap::get_used_cells() const {
-
 	Array a;
 	a.resize(cell_map.size());
 	int i = 0;
@@ -931,21 +890,22 @@ Array GridMap::get_used_cells() const {
 }
 
 Array GridMap::get_meshes() {
-
-	if (mesh_library.is_null())
+	if (mesh_library.is_null()) {
 		return Array();
+	}
 
 	Vector3 ofs = _get_offset();
 	Array meshes;
 
 	for (Map<IndexKey, Cell>::Element *E = cell_map.front(); E; E = E->next()) {
-
 		int id = E->get().item;
-		if (!mesh_library->has_item(id))
+		if (!mesh_library->has_item(id)) {
 			continue;
+		}
 		Ref<Mesh> mesh = mesh_library->get_item_mesh(id);
-		if (mesh.is_null())
+		if (mesh.is_null()) {
 			continue;
+		}
 
 		IndexKey ik = E->key();
 
@@ -973,7 +933,6 @@ Vector3 GridMap::_get_offset() const {
 }
 
 void GridMap::clear_baked_meshes() {
-
 	for (int i = 0; i < baked_meshes.size(); i++) {
 		RS::get_singleton()->free(baked_meshes[i].instance);
 	}
@@ -983,24 +942,25 @@ void GridMap::clear_baked_meshes() {
 }
 
 void GridMap::make_baked_meshes(bool p_gen_lightmap_uv, float p_lightmap_uv_texel_size) {
-
-	if (!mesh_library.is_valid())
+	if (!mesh_library.is_valid()) {
 		return;
+	}
 
 	//generate
 	Map<OctantKey, Map<Ref<Material>, Ref<SurfaceTool>>> surface_map;
 
 	for (Map<IndexKey, Cell>::Element *E = cell_map.front(); E; E = E->next()) {
-
 		IndexKey key = E->key();
 
 		int item = E->get().item;
-		if (!mesh_library->has_item(item))
+		if (!mesh_library->has_item(item)) {
 			continue;
+		}
 
 		Ref<Mesh> mesh = mesh_library->get_item_mesh(item);
-		if (!mesh.is_valid())
+		if (!mesh.is_valid()) {
 			continue;
+		}
 
 		Vector3 cellpos = Vector3(key.x, key.y, key.z);
 		Vector3 ofs = _get_offset();
@@ -1023,9 +983,9 @@ void GridMap::make_baked_meshes(bool p_gen_lightmap_uv, float p_lightmap_uv_texe
 		Map<Ref<Material>, Ref<SurfaceTool>> &mat_map = surface_map[ok];
 
 		for (int i = 0; i < mesh->get_surface_count(); i++) {
-
-			if (mesh->surface_get_primitive_type(i) != Mesh::PRIMITIVE_TRIANGLES)
+			if (mesh->surface_get_primitive_type(i) != Mesh::PRIMITIVE_TRIANGLES) {
 				continue;
+			}
 
 			Ref<Material> surf_mat = mesh->surface_get_material(i);
 			if (!mat_map.has(surf_mat)) {
@@ -1041,7 +1001,6 @@ void GridMap::make_baked_meshes(bool p_gen_lightmap_uv, float p_lightmap_uv_texe
 	}
 
 	for (Map<OctantKey, Map<Ref<Material>, Ref<SurfaceTool>>>::Element *E = surface_map.front(); E; E = E->next()) {
-
 		Ref<ArrayMesh> mesh;
 		mesh.instance();
 		for (Map<Ref<Material>, Ref<SurfaceTool>>::Element *F = E->get().front(); F; F = F->next()) {
@@ -1068,7 +1027,6 @@ void GridMap::make_baked_meshes(bool p_gen_lightmap_uv, float p_lightmap_uv_texe
 }
 
 Array GridMap::get_bake_meshes() {
-
 	if (!baked_meshes.size()) {
 		make_baked_meshes(true);
 	}
@@ -1083,13 +1041,11 @@ Array GridMap::get_bake_meshes() {
 }
 
 RID GridMap::get_bake_mesh_instance(int p_idx) {
-
 	ERR_FAIL_INDEX_V(p_idx, baked_meshes.size(), RID());
 	return baked_meshes[p_idx].instance;
 }
 
 GridMap::GridMap() {
-
 	collision_layer = 1;
 	collision_mask = 1;
 
@@ -1113,9 +1069,9 @@ GridMap::GridMap() {
 }
 
 GridMap::~GridMap() {
-
-	if (!mesh_library.is_null())
+	if (!mesh_library.is_null()) {
 		mesh_library->unregister_owner(this);
+	}
 
 	clear();
 }