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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.
92 lines
3.2 KiB
Python
92 lines
3.2 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 game.ato.flightplans.ibuilder import IBuilder
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from game.ato.flightplans.patrolling import PatrollingFlightPlan, PatrollingLayout
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from game.ato.flightplans.waypointbuilder import WaypointBuilder
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from game.utils import Distance, Heading, Speed, feet, knots, meters, nautical_miles
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class Builder(IBuilder):
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def build(self) -> PatrollingLayout:
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racetrack_half_distance = nautical_miles(30).meters
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location = self.package.target
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closest_boundary = self.threat_zones.closest_boundary(location.position)
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heading_to_threat_boundary = Heading.from_degrees(
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location.position.heading_between_point(closest_boundary)
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)
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distance_to_threat = meters(
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location.position.distance_to_point(closest_boundary)
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)
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orbit_heading = heading_to_threat_boundary
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# Station 80nm outside the threat zone.
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threat_buffer = nautical_miles(80)
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if self.threat_zones.threatened(location.position):
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orbit_distance = distance_to_threat + threat_buffer
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else:
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orbit_distance = distance_to_threat - threat_buffer
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racetrack_center = location.position.point_from_heading(
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orbit_heading.degrees, orbit_distance.meters
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)
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racetrack_start = racetrack_center.point_from_heading(
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orbit_heading.right.degrees, racetrack_half_distance
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)
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racetrack_end = racetrack_center.point_from_heading(
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orbit_heading.left.degrees, racetrack_half_distance
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)
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builder = WaypointBuilder(self.flight, self.coalition)
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if self.flight.unit_type.patrol_altitude is not None:
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altitude = self.flight.unit_type.patrol_altitude
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else:
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altitude = feet(25000)
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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 AewcFlightPlan(PatrollingFlightPlan[PatrollingLayout]):
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@property
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def patrol_duration(self) -> timedelta:
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return timedelta(hours=4)
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@property
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def patrol_speed(self) -> Speed:
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altitude = self.layout.patrol_start.alt
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if self.flight.unit_type.preferred_patrol_speed(altitude) is not None:
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return self.flight.unit_type.preferred_patrol_speed(altitude)
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return knots(390)
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@property
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def engagement_distance(self) -> Distance:
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# TODO: Factor out a common base of the combat and non-combat race-tracks.
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# No harm in setting this, but we ought to clean up a bit.
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return meters(0)
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@staticmethod
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def builder_type() -> Type[IBuilder]:
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return Builder
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