Disable navmesh, lightmap, and VoxelGI generation on foreign data

1 files changed, 29 insertions, 1 deletions

diff --git a/modules/navigation/editor/navigation_mesh_editor_plugin.cpp b/modules/navigation/editor/navigation_mesh_editor_plugin.cpp
index 54f7abda8d..557d45b386 100644
--- a/modules/navigation/editor/navigation_mesh_editor_plugin.cpp
+++ b/modules/navigation/editor/navigation_mesh_editor_plugin.cpp
@@ -60,12 +60,40 @@ void NavigationMeshEditor::_bake_pressed() {
 	button_bake->set_pressed(false);
 
 	ERR_FAIL_COND(!node);
-	if (!node->get_navigation_mesh().is_valid()) {
+	Ref<NavigationMesh> navmesh = node->get_navigation_mesh();
+	if (!navmesh.is_valid()) {
 		err_dialog->set_text(TTR("A NavigationMesh resource must be set or created for this node to work."));
 		err_dialog->popup_centered();
 		return;
 	}
 
+	String path = navmesh->get_path();
+	if (!path.is_resource_file()) {
+		int srpos = path.find("::");
+		if (srpos != -1) {
+			String base = path.substr(0, srpos);
+			if (ResourceLoader::get_resource_type(base) == "PackedScene") {
+				if (!get_tree()->get_edited_scene_root() || get_tree()->get_edited_scene_root()->get_scene_file_path() != base) {
+					err_dialog->set_text(TTR("Cannot generate navigation mesh because it does not belong to the edited scene. Make it unique first."));
+					err_dialog->popup_centered();
+					return;
+				}
+			} else {
+				if (FileAccess::exists(base + ".import")) {
+					err_dialog->set_text(TTR("Cannot generate navigation mesh because it belongs to a resource which was imported."));
+					err_dialog->popup_centered();
+					return;
+				}
+			}
+		}
+	} else {
+		if (FileAccess::exists(path + ".import")) {
+			err_dialog->set_text(TTR("Cannot generate navigation mesh because the resource was imported from another type."));
+			err_dialog->popup_centered();
+			return;
+		}
+	}
+
 	NavigationMeshGenerator::get_singleton()->clear(node->get_navigation_mesh());
 	NavigationMeshGenerator::get_singleton()->bake(node->get_navigation_mesh(), node);