client: added ConnectionStatus to invoke UI changes when connection status changes

components/web_client_tcp.gd

@@ -24,6 +24,16 @@ signal disconnected_from_lobby()
 
 signal client_joined_lobby(client_name: String)
 
+signal connection_status_changed(new_status: ConnectionStatus)
+
+enum ConnectionStatus {
+	DISCONNECTED,
+	ATTEMPTING_CONNECTION,
+	LOBBYLESS, # == connected
+	ATTEMPTING_JOIN,
+	JOINED,
+}
+
 func _process(delta: float) -> void:
 	_tcp.poll()
 	_new_status = _tcp.get_status()
@@ -31,15 +41,17 @@ func _process(delta: float) -> void:
 	if not _processed_status == _new_status:
 		match _new_status:
 			StreamPeerTCP.Status.STATUS_NONE:
-				pass
+				connection_status_changed.emit(ConnectionStatus.DISCONNECTED)
 			StreamPeerTCP.Status.STATUS_CONNECTING:
-				pass
+				connection_status_changed.emit(ConnectionStatus.ATTEMPTING_CONNECTION)
 			StreamPeerTCP.Status.STATUS_CONNECTED:
 				_thread = Thread.new()
 				_thread.start(_listen_for_data)
 				connected_to_server.emit()
+				connection_status_changed.emit(ConnectionStatus.LOBBYLESS)
 			StreamPeerTCP.Status.STATUS_ERROR:
 				connection_error_occurred.emit()
+				connection_status_changed.emit(ConnectionStatus.DISCONNECTED)
 		
 		_processed_status = _new_status
 	
@@ -59,9 +71,11 @@ func _handle_response(response: String) -> void:
 		"create_lobby":
 			if data["status"] == "ok":
 				connected_to_lobby.emit.call_deferred(_lobby_id)
+				connection_status_changed.emit.call_deferred(ConnectionStatus.JOINED)
 		"join_lobby":
 			if data["status"] == "ok":
 				connected_to_lobby.emit.call_deferred(_lobby_id)
+				connection_status_changed.emit.call_deferred(ConnectionStatus.JOINED)
 		"client_joined_lobby":
 			client_joined_lobby.emit.call_deferred(data["new_client_name"])
 
@@ -79,6 +93,7 @@ func disconnect_from_server() -> void:
 	if _thread:
 		_thread.wait_to_finish()
 	disconnected_from_server.emit()
+	connection_status_changed.emit(ConnectionStatus.DISCONNECTED)
 
 func create_lobby(client_name: String) -> void:
 	_lobby_id = _generate_code()
@@ -102,6 +117,7 @@ func leave_lobby() -> void:
 	_client_name = ""
 	
 	disconnected_from_lobby.emit()
+	connection_status_changed.emit(ConnectionStatus.LOBBYLESS)
 
 func _send_message(message: String) -> void:
 	_tcp.put_data(message.to_utf8_buffer())