Redraw flight plans when they change.

qt_ui/windows/GameUpdateSignal.py

@@ -1,3 +1,5 @@
+from __future__ import annotations
+
 from PySide2.QtCore import QObject, Signal
 
 from game import Game
@@ -19,21 +21,31 @@ class GameUpdateSignal(QObject):
     budgetupdated = Signal(Game)
     debriefingReceived = Signal(DebriefingSignal)
 
+    flight_paths_changed = Signal()
+
     def __init__(self):
         super(GameUpdateSignal, self).__init__()
         GameUpdateSignal.instance = self
 
+    def redraw_flight_paths(self) -> None:
+        # noinspection PyUnresolvedReferences
+        self.flight_paths_changed.emit()
+
     def updateGame(self, game: Game):
+        # noinspection PyUnresolvedReferences
         self.gameupdated.emit(game)
 
     def updateBudget(self, game: Game):
+        # noinspection PyUnresolvedReferences
         self.budgetupdated.emit(game)
 
     def sendDebriefing(self, game: Game, gameEvent: Event, debriefing: Debriefing):
         sig = DebriefingSignal(game, gameEvent, debriefing)
+        # noinspection PyUnresolvedReferences
         self.gameupdated.emit(game)
+        # noinspection PyUnresolvedReferences
         self.debriefingReceived.emit(sig)
 
     @staticmethod
-    def get_instance():
+    def get_instance() -> GameUpdateSignal:
         return GameUpdateSignal.instance