Ignore non-escorted regions when planning escorts.

We shouldn't consider the non-escorted parts of the flight path when
checking for threats to determine if escorts should be used or not,
since escorts can't help in those areas anyway. This was causing escorts
to be overly requested since the bullseye is now a part of the
"flight plan", but could have also triggered for divert waypoints, or
for aircraft taking off in a retreat from a threatened location.

gen/flights/ai_flight_planner.py

@@ -831,9 +831,13 @@ class CoalitionMissionPlanner:
     def check_needed_escorts(self, builder: PackageBuilder) -> Dict[EscortType, bool]:
         threats = defaultdict(bool)
         for flight in builder.package.flights:
-            if self.threat_zones.threatened_by_aircraft(flight):
+            if self.threat_zones.waypoints_threatened_by_aircraft(
+                flight.flight_plan.escorted_waypoints()
+            ):
                 threats[EscortType.AirToAir] = True
-            if self.threat_zones.threatened_by_radar_sam(flight):
+            if self.threat_zones.waypoints_threatened_by_radar_sam(
+                list(flight.flight_plan.escorted_waypoints())
+            ):
                 threats[EscortType.Sead] = True
         return threats
 

gen/flights/flightplan.py

@@ -198,6 +198,20 @@ class FlightPlan:
     def dismiss_escort_at(self) -> Optional[FlightWaypoint]:
         return None
 
+    def escorted_waypoints(self) -> Iterator[FlightWaypoint]:
+        begin = self.request_escort_at()
+        end = self.dismiss_escort_at()
+        if begin is None or end is None:
+            return
+        escorting = False
+        for waypoint in self.waypoints:
+            if waypoint == begin:
+                escorting = True
+            if escorting:
+                yield waypoint
+            if waypoint == end:
+                return
+
     def takeoff_time(self) -> Optional[timedelta]:
         tot_waypoint = self.tot_waypoint
         if tot_waypoint is None:
@@ -600,10 +614,6 @@ class StrikeFlightPlan(FormationFlightPlan):
             )
         return total
 
-    @property
-    def mission_speed(self) -> Speed:
-        return GroundSpeed.for_flight(self.flight, self.ingress.alt)
-
     @property
     def join_time(self) -> timedelta:
         travel_time = self.travel_time_between_waypoints(self.join, self.ingress)