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769fe12159
During package planning we don't care about the details of the flight plan, just the layout (to check if the layout is threatened and we need escorts). Splitting these will allow us to reduce the amount of work that must be done in each loop of the planning phase, potentially caching attempted flight plans between loops.
125 lines
4.0 KiB
Python
125 lines
4.0 KiB
Python
from __future__ import annotations
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from datetime import timedelta
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from typing import Type
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from dcs import Point
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from game.utils import Distance, Heading, feet, meters
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from .patrolling import PatrollingLayout
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from .theaterrefueling import (
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Builder as TheaterRefuelingBuilder,
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TheaterRefuelingFlightPlan,
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)
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from .waypointbuilder import WaypointBuilder
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from ..flightwaypoint import FlightWaypoint
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from ..flightwaypointtype import FlightWaypointType
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class Builder(TheaterRefuelingBuilder):
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def build(self) -> PatrollingLayout:
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package_waypoints = self.package.waypoints
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assert package_waypoints is not None
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racetrack_half_distance = Distance.from_nautical_miles(20).meters
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racetrack_center = package_waypoints.refuel
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split_heading = Heading.from_degrees(
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racetrack_center.heading_between_point(package_waypoints.split)
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)
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home_heading = split_heading.opposite
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racetrack_start = racetrack_center.point_from_heading(
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split_heading.degrees, racetrack_half_distance
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)
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racetrack_end = racetrack_center.point_from_heading(
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home_heading.degrees, racetrack_half_distance
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)
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builder = WaypointBuilder(self.flight, self.coalition)
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tanker_type = self.flight.unit_type
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if tanker_type.patrol_altitude is not None:
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altitude = tanker_type.patrol_altitude
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else:
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altitude = feet(21000)
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racetrack = builder.race_track(racetrack_start, racetrack_end, altitude)
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return PatrollingLayout(
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departure=builder.takeoff(self.flight.departure),
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nav_to=builder.nav_path(
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self.flight.departure.position, racetrack_start, altitude
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),
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nav_from=builder.nav_path(
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racetrack_end, self.flight.arrival.position, altitude
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),
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patrol_start=racetrack[0],
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patrol_end=racetrack[1],
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arrival=builder.land(self.flight.arrival),
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divert=builder.divert(self.flight.divert),
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bullseye=builder.bullseye(),
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)
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class PackageRefuelingFlightPlan(TheaterRefuelingFlightPlan):
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@staticmethod
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def builder_type() -> Type[Builder]:
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return Builder
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@property
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def patrol_duration(self) -> timedelta:
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# TODO: Only consider aircraft that can refuel with this tanker type.
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refuel_time_minutes = 5
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for self.flight in self.package.flights:
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flight_size = self.flight.roster.max_size
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refuel_time_minutes = refuel_time_minutes + 4 * flight_size + 1
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return timedelta(minutes=refuel_time_minutes)
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def target_area_waypoint(self) -> FlightWaypoint:
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return FlightWaypoint(
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"TARGET AREA",
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FlightWaypointType.TARGET_GROUP_LOC,
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self.package.target.position,
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meters(0),
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"RADIO",
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)
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@property
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def patrol_start_time(self) -> timedelta:
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altitude = self.flight.unit_type.patrol_altitude
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if altitude is None:
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altitude = Distance.from_feet(20000)
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assert self.package.waypoints is not None
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# Cheat in a FlightWaypoint for the split point.
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split: Point = self.package.waypoints.split
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split_waypoint: FlightWaypoint = FlightWaypoint(
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"SPLIT", FlightWaypointType.SPLIT, split, altitude
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)
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# Cheat in a FlightWaypoint for the refuel point.
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refuel: Point = self.package.waypoints.refuel
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refuel_waypoint: FlightWaypoint = FlightWaypoint(
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"REFUEL", FlightWaypointType.REFUEL, refuel, altitude
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)
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delay_target_to_split: timedelta = self.travel_time_between_waypoints(
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self.target_area_waypoint(), split_waypoint
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)
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delay_split_to_refuel: timedelta = self.travel_time_between_waypoints(
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split_waypoint, refuel_waypoint
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)
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return (
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self.package.time_over_target
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+ delay_target_to_split
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+ delay_split_to_refuel
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- timedelta(minutes=1.5)
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)
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