Interrupt fast-forward on air defense contact.

https://github.com/dcs-liberation/dcs_liberation/issues/1681

game/ato/flight.py

@@ -134,6 +134,8 @@ class Flight:
     def set_state(self, state: FlightState) -> None:
         self.state = state
 
-    def on_game_tick(self, time: datetime, duration: timedelta) -> bool:
+    def on_game_tick(self, time: datetime, duration: timedelta) -> None:
         self.state.on_game_tick(time, duration)
+
+    def should_halt_sim(self) -> bool:
         return self.state.should_halt_sim()

game/ato/flightstate/inflight.py

@@ -123,6 +123,15 @@ class InFlight(FlightState):
                 "ingress point"
             )
             return True
+
+        threat_zone = self.flight.squadron.coalition.opponent.threat_zone
+        if threat_zone.threatened_by_air_defense(self.estimate_position()):
+            logging.info(
+                f"Interrupting simulation because {self.flight} has encountered enemy "
+                "air defenses"
+            )
+            return True
+
         return False
 
     @property

game/sim/aircraftsimulation.py

@@ -47,7 +47,8 @@ class AircraftSimulation:
     def tick(self) -> bool:
         interrupt_sim = False
         for flight in self.iter_flights():
-            if flight.on_game_tick(self.time, TICK):
+            flight.on_game_tick(self.time, TICK)
+            if flight.should_halt_sim():
                 interrupt_sim = True
 
         # TODO: Check for SAM or A2A contact.

game/threatzones.py

@@ -104,6 +104,10 @@ class ThreatZones:
     def _threatened_by_air_defense_geom(self, position: BaseGeometry) -> bool:
         return self.air_defenses.intersects(position)
 
+    @threatened_by_air_defense.register
+    def _threatened_by_air_defense_dcs_point(self, position: DcsPoint) -> bool:
+        return self.threatened_by_air_defense(self.dcs_to_shapely_point(position))
+
     @threatened_by_air_defense.register
     def _threatened_by_air_defense_flight(self, flight: Flight) -> bool:
         return self.threatened_by_air_defense(