Redraw flight plans when they change.

qt_ui/widgets/ato.py

@@ -16,6 +16,7 @@ from PySide2.QtWidgets import (
 from gen.ato import Package
 from gen.flights.flight import Flight
 from ..models import AtoModel, GameModel, NullListModel, PackageModel
+from qt_ui.windows.GameUpdateSignal import GameUpdateSignal
 
 
 class QFlightList(QListView):
@@ -134,6 +135,7 @@ class QFlightPanel(QGroupBox):
         self.game_model.game.aircraft_inventory.return_from_flight(
             self.flight_list.selected_item)
         self.package_model.delete_flight_at_index(index)
+        GameUpdateSignal.get_instance().redraw_flight_paths()
 
 
 class QPackageList(QListView):
@@ -217,6 +219,7 @@ class QPackagePanel(QGroupBox):
             logging.error(f"Cannot delete package when no package is selected.")
             return
         self.ato_model.delete_package_at_index(index)
+        GameUpdateSignal.get_instance().redraw_flight_paths()
 
 
 class QAirTaskingOrderPanel(QSplitter):

qt_ui/widgets/map/QLiberationMap.py

@@ -1,10 +1,10 @@
-import typing
-from typing import Dict, Tuple
+from typing import Dict, List, Tuple
 
 from PySide2.QtCore import Qt
 from PySide2.QtGui import QBrush, QColor, QPen, QPixmap, QWheelEvent
 from PySide2.QtWidgets import (
     QFrame,
+    QGraphicsItem,
     QGraphicsOpacityEffect,
     QGraphicsScene,
     QGraphicsView,
@@ -44,6 +44,8 @@ class QLiberationMap(QGraphicsView):
         QLiberationMap.instance = self
         self.game_model = game_model
 
+        self.flight_path_items: List[QGraphicsItem] = []
+
         self.setMinimumSize(800,600)
         self.setMaximumHeight(2160)
         self._zoom = 0
@@ -53,6 +55,10 @@ class QLiberationMap(QGraphicsView):
         self.connectSignals()
         self.setGame(game_model.game)
 
+        GameUpdateSignal.get_instance().flight_paths_changed.connect(
+            lambda: self.draw_flight_plans(self.scene())
+        )
+
     def init_scene(self):
         scene = QLiberationScene(self)
         self.setScene(scene)
@@ -176,8 +182,7 @@ class QLiberationMap(QGraphicsView):
             if self.get_display_rule("lines"):
                 self.scene_create_lines_for_cp(cp, playerColor, enemyColor)
 
-        if self.get_display_rule("flight_paths"):
-            self.draw_flight_plans(scene)
+        self.draw_flight_plans(scene)
 
         for cp in self.game.theater.controlpoints:
             pos = self._transform_point(cp.position)
@@ -188,6 +193,15 @@ class QLiberationMap(QGraphicsView):
             text.setPos(pos[0] + CONST.CP_SIZE + 1, pos[1] - CONST.CP_SIZE / 2 + 1)
 
     def draw_flight_plans(self, scene) -> None:
+        for item in self.flight_path_items:
+            try:
+                scene.removeItem(item)
+            except RuntimeError:
+                # Something may have caused those items to already be removed.
+                pass
+        self.flight_path_items.clear()
+        if not self.get_display_rule("flight_paths"):
+            return
         for package in self.game_model.ato_model.packages:
             for flight in package.flights:
                 self.draw_flight_plan(scene, flight)
@@ -209,17 +223,21 @@ class QLiberationMap(QGraphicsView):
                       player: bool) -> None:
         waypoint_pen = self.waypoint_pen(player)
         waypoint_brush = self.waypoint_brush(player)
-        scene.addEllipse(position[0], position[1], self.WAYPOINT_SIZE,
-                         self.WAYPOINT_SIZE, waypoint_pen, waypoint_brush)
+        self.flight_path_items.append(scene.addEllipse(
+            position[0], position[1], self.WAYPOINT_SIZE,
+            self.WAYPOINT_SIZE, waypoint_pen, waypoint_brush
+        ))
 
     def draw_flight_path(self, scene: QGraphicsScene, pos0: Tuple[int, int],
                          pos1: Tuple[int, int], player: bool):
         flight_path_pen = self.flight_path_pen(player)
         # Draw the line to the *middle* of the waypoint.
         offset = self.WAYPOINT_SIZE // 2
-        scene.addLine(pos0[0] + offset, pos0[1] + offset,
-                      pos1[0] + offset, pos1[1] + offset,
-                      flight_path_pen)
+        self.flight_path_items.append(scene.addLine(
+            pos0[0] + offset, pos0[1] + offset,
+            pos1[0] + offset, pos1[1] + offset,
+            flight_path_pen
+        ))
 
     def scene_create_lines_for_cp(self, cp: ControlPoint, playerColor, enemyColor):
         scene = self.scene()

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

qt_ui/windows/mission/QEditFlightDialog.py

@@ -7,6 +7,7 @@ from PySide2.QtWidgets import (
 from game import Game
 from gen.flights.flight import Flight
 from qt_ui.uiconstants import EVENT_ICONS
+from qt_ui.windows.GameUpdateSignal import GameUpdateSignal
 from qt_ui.windows.mission.flight.QFlightPlanner import QFlightPlanner
 
 
@@ -27,3 +28,8 @@ class QEditFlightDialog(QDialog):
         layout.addWidget(self.flight_planner)
 
         self.setLayout(layout)
+        self.finished.connect(self.on_close)
+
+    @staticmethod
+    def on_close(_result) -> None:
+        GameUpdateSignal.get_instance().redraw_flight_paths()

qt_ui/windows/mission/QPackageDialog.py

@@ -17,6 +17,7 @@ from gen.flights.flight import Flight
 from qt_ui.models import AtoModel, PackageModel
 from qt_ui.uiconstants import EVENT_ICONS
 from qt_ui.widgets.ato import QFlightList
+from qt_ui.windows.GameUpdateSignal import GameUpdateSignal
 from qt_ui.windows.mission.flight.QFlightCreator import QFlightCreator
 from theater.missiontarget import MissionTarget
 
@@ -86,6 +87,12 @@ class QPackageDialog(QDialog):
 
         self.setLayout(self.layout)
 
+        self.finished.connect(self.on_close)
+
+    @staticmethod
+    def on_close(_result) -> None:
+        GameUpdateSignal.get_instance().redraw_flight_paths()
+
     def on_selection_changed(self, selected: QItemSelection,
                              _deselected: QItemSelection) -> None:
         """Updates the state of the delete button."""