Change squadrons to operate out of a single base.

https://github.com/dcs-liberation/dcs_liberation/issues/1145

Currently this is fixed at the start of the campaign. The squadron
locations are defined by the campaign file.

Follow up work:

* Track aircraft ownership per-squadron rather than per-airbase.
* UI for relocating squadrons.
* Ferry missions for squadrons that are relocating.
* Auto-relocation (probably only for retreat handling).

Fixes https://github.com/dcs-liberation/dcs_liberation/issues/1138

game/commander/aircraftallocator.py

@@ -2,7 +2,8 @@ from typing import Optional, Tuple
 
 from game.commander.missionproposals import ProposedFlight
 from game.inventory import GlobalAircraftInventory
-from game.squadrons import AirWing, Squadron
+from game.squadrons.squadron import Squadron
+from game.squadrons.airwing import AirWing
 from game.theater import ControlPoint, MissionTarget
 from game.utils import meters
 from gen.flights.ai_flight_planner_db import aircraft_for_task
@@ -67,7 +68,7 @@ class AircraftAllocator:
                 # Valid location with enough aircraft available. Find a squadron to fit
                 # the role.
                 squadrons = self.air_wing.auto_assignable_for_task_with_type(
-                    aircraft, task
+                    aircraft, task, airfield
                 )
                 for squadron in squadrons:
                     if squadron.operates_from(airfield) and squadron.can_provide_pilots(

game/commander/packagebuilder.py

@@ -3,10 +3,10 @@ from typing import Optional
 from game.commander.missionproposals import ProposedFlight
 from game.dcs.aircrafttype import AircraftType
 from game.inventory import GlobalAircraftInventory
-from game.squadrons import AirWing
+from game.squadrons.airwing import AirWing
 from game.theater import MissionTarget, OffMapSpawn, ControlPoint
 from game.utils import nautical_miles
-from gen import Package
+from gen.ato import Package
 from game.commander.aircraftallocator import AircraftAllocator
 from gen.flights.closestairfields import ClosestAirfields
 from gen.flights.flight import Flight

game/commander/packagefulfiller.py

@@ -13,8 +13,8 @@ from game.settings import Settings
 from game.squadrons import AirWing
 from game.theater import ConflictTheater
 from game.threatzones import ThreatZones
-from gen import AirTaskingOrder, Package
 from game.commander.packagebuilder import PackageBuilder
+from gen.ato import AirTaskingOrder, Package
 from gen.flights.closestairfields import ObjectiveDistanceCache
 from gen.flights.flight import FlightType
 from gen.flights.flightplan import FlightPlanBuilder

game/commander/tasks/packageplanningtask.py

@@ -11,12 +11,11 @@ from game.commander.missionproposals import ProposedFlight, EscortType, Proposed
 from game.commander.packagefulfiller import PackageFulfiller
 from game.commander.tasks.theatercommandertask import TheaterCommanderTask
 from game.commander.theaterstate import TheaterState
-from game.data.doctrine import Doctrine
 from game.settings import AutoAtoBehavior
 from game.theater import MissionTarget
 from game.theater.theatergroundobject import IadsGroundObject, NavalGroundObject
 from game.utils import Distance, meters
-from gen import Package
+from gen.ato import Package
 from gen.flights.flight import FlightType
 
 if TYPE_CHECKING: