Using a singleton QObject to propagate game model update across whole app

qt_ui/windows/GameUpdateSignal.py

@@ -0,0 +1,19 @@
+from PySide2.QtCore import QObject, Signal
+from game import Game
+
+
+class GameUpdateSignal(QObject):
+
+    instance = None
+    gameupdated = Signal(Game)
+
+    def __init__(self):
+        super(GameUpdateSignal, self).__init__()
+        GameUpdateSignal.instance = self
+
+    def updateGame(self, game: Game):
+        self.gameupdated.emit(game)
+
+    @staticmethod
+    def get_instance():
+        return GameUpdateSignal.instance