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fa8c0d9660
Split the oversized file into one per plan type. This also moves the layout responsibility out of the oversized FlightPlanBuilder and into each flight plan type file.
91 lines
3.2 KiB
Python
91 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.utils import Heading, feet, knots, meters, nautical_miles
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from .ibuilder import IBuilder
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from .patrolling import PatrollingFlightPlan
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from .waypointbuilder import WaypointBuilder
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class Builder(IBuilder):
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def build(self) -> TheaterRefuelingFlightPlan:
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racetrack_half_distance = nautical_miles(20).meters
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patrol_duration = timedelta(hours=1)
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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 70nm outside the threat zone.
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threat_buffer = nautical_miles(70)
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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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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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# TODO: Could use self.flight.unit_type.preferred_patrol_speed(altitude).
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if tanker_type.patrol_speed is not None:
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speed = tanker_type.patrol_speed
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else:
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# ~280 knots IAS at 21000.
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speed = knots(400)
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racetrack = builder.race_track(racetrack_start, racetrack_end, altitude)
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return TheaterRefuelingFlightPlan(
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flight=self.flight,
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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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patrol_duration=patrol_duration,
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patrol_speed=speed,
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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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engagement_distance=meters(0),
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)
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class TheaterRefuelingFlightPlan(PatrollingFlightPlan):
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@staticmethod
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def builder_type() -> Type[Builder]:
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return Builder
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