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https://github.com/dcs-retribution/dcs-retribution.git
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96 lines
3.2 KiB
Python
96 lines
3.2 KiB
Python
from __future__ import annotations
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from typing import Optional, TYPE_CHECKING
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from game.theater import ControlPoint, MissionTarget, OffMapSpawn
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from game.utils import nautical_miles
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from ..ato.flight import Flight
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from ..ato.package import Package
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from ..ato.starttype import StartType
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from ..db.database import Database
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if TYPE_CHECKING:
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from game.dcs.aircrafttype import AircraftType
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from game.squadrons.airwing import AirWing
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from game.ato.closestairfields import ClosestAirfields
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from .missionproposals import ProposedFlight
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class PackageBuilder:
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"""Builds a Package for the flights it receives."""
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def __init__(
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self,
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location: MissionTarget,
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closest_airfields: ClosestAirfields,
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air_wing: AirWing,
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flight_db: Database[Flight],
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is_player: bool,
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package_country: str,
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start_type: StartType,
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asap: bool,
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) -> None:
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self.closest_airfields = closest_airfields
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self.is_player = is_player
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self.package_country = package_country
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self.package = Package(location, flight_db, auto_asap=asap)
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self.air_wing = air_wing
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self.start_type = start_type
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def plan_flight(self, plan: ProposedFlight) -> bool:
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"""Allocates aircraft for the given flight and adds them to the package.
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If no suitable aircraft are available, False is returned. If the failed
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flight was critical and the rest of the mission will be scrubbed, the
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caller should return any previously planned flights to the inventory
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using release_planned_aircraft.
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"""
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squadron = self.air_wing.best_squadron_for(
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self.package.target, plan.task, plan.num_aircraft, this_turn=True
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)
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if squadron is None:
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return False
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start_type = squadron.location.required_aircraft_start_type
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if start_type is None:
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start_type = self.start_type
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flight = Flight(
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self.package,
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self.package_country,
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squadron,
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plan.num_aircraft,
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plan.task,
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start_type,
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divert=self.find_divert_field(squadron.aircraft, squadron.location),
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)
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self.package.add_flight(flight)
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return True
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def find_divert_field(
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self, aircraft: AircraftType, arrival: ControlPoint
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) -> Optional[ControlPoint]:
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divert_limit = nautical_miles(150)
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for airfield in self.closest_airfields.operational_airfields_within(
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divert_limit
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):
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if airfield.captured != self.is_player:
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continue
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if airfield == arrival:
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continue
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if not airfield.can_operate(aircraft):
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continue
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if isinstance(airfield, OffMapSpawn):
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continue
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return airfield
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return None
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def build(self) -> Package:
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"""Returns the built package."""
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return self.package
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def release_planned_aircraft(self) -> None:
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"""Returns any planned flights to the inventory."""
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flights = list(self.package.flights)
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for flight in flights:
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self.package.remove_flight(flight)
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