fix self hosting

apps/networked_physics_demo/client/src/netcode.rs

@@ -83,8 +83,8 @@ fn apply_queued_commands(
 /// Other plugins create this when they want to connect to a manager.
 #[derive(Debug, Event, Eq, PartialEq)]
 pub struct ConnectToManagerRequest {
-	/// The URL of the manager to connect to. If `None`, locally host.
-	pub manager_url: Option<Url>,
+	/// The URL of the manager to connect to.
+	pub manager_url: Url,
 }
 
 /// Produced in response to [`ConnectToManagerRequest`].
@@ -94,13 +94,8 @@ pub struct ConnectToManagerResponse(pub Result<()>);
 fn handle_connect_to_manager_evt(
 	command_queue: Res<CommandQueueChannel>,
 	mut request: EventReader<ConnectToManagerRequest>,
-	mut response: EventWriter<ConnectToManagerResponse>,
 ) {
 	for ConnectToManagerRequest { manager_url } in request.read() {
-		let Some(manager_url) = manager_url else {
-			response.send(ConnectToManagerResponse(Ok(())));
-			continue;
-		};
 		let manager_url = manager_url.to_owned();
 		let tx = command_queue.tx.clone();
 		let pool = IoTaskPool::get();

apps/networked_physics_demo/client/src/title_screen.rs

@@ -178,7 +178,7 @@ mod ui {
 							.then(|| manager_url.parse())
 							.transpose()
 						{
-							Ok(parsed_manager_url) => {
+							Ok(Some(parsed_manager_url)) => {
 								evw.send(ConnectToManagerRequest {
 									manager_url: parsed_manager_url,
 								});
@@ -187,6 +187,13 @@ mod ui {
 								}
 								.into();
 							}
+							Ok(None) => {
+								// Locally host
+								evw.send(ConnectToInstanceRequest {
+									instance_url: None,
+								});
+								return JoinInstance::WaitingForConnection.into();
+							}
 							Err(_parse_err) => {
 								error_msg.clear();
 								error_msg.push_str("Invalid URL");