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https://github.com/dcs-liberation/dcs_liberation.git
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4aa42e6573
mypy struggles to prove this cast correct when there are two or'd isinstance checks where both types coincidentally have properties of the same name (but no defined protocol making that explicit). I'm not really sure why mypy is happy with this in its current state, but it isn't after a change I'm making. All our isinstance use is a bit of an anti-pattern anyway, so extract a method that exposes the data we care about. The start/end times for tankers aren't actually used, so this could be simplified even more, but that data _should_ be used.
146 lines
4.5 KiB
Python
146 lines
4.5 KiB
Python
from __future__ import annotations
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from dataclasses import dataclass
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from datetime import timedelta
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from typing import Iterator, TYPE_CHECKING, Type
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from dcs import Point
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from game.utils import Heading
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from .ibuilder import IBuilder
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from .loiter import LoiterFlightPlan, LoiterLayout
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from .waypointbuilder import WaypointBuilder
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from ..traveltime import GroundSpeed, TravelTime
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from ...flightplan import HoldZoneGeometry
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if TYPE_CHECKING:
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from ..flightwaypoint import FlightWaypoint
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@dataclass(frozen=True)
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class SweepLayout(LoiterLayout):
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nav_to: list[FlightWaypoint]
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sweep_start: FlightWaypoint
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sweep_end: FlightWaypoint
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nav_from: list[FlightWaypoint]
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def iter_waypoints(self) -> Iterator[FlightWaypoint]:
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yield self.departure
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yield self.hold
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yield from self.nav_to
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yield self.sweep_start
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yield self.sweep_end
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yield from self.nav_from
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yield self.arrival
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if self.divert is not None:
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yield self.divert
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yield self.bullseye
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class SweepFlightPlan(LoiterFlightPlan):
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@property
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def lead_time(self) -> timedelta:
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return timedelta(minutes=5)
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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 combat_speed_waypoints(self) -> set[FlightWaypoint]:
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return {self.layout.sweep_end}
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@property
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def tot_waypoint(self) -> FlightWaypoint:
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return self.layout.sweep_end
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@property
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def tot_offset(self) -> timedelta:
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return -self.lead_time
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@property
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def sweep_start_time(self) -> timedelta:
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travel_time = self.travel_time_between_waypoints(
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self.layout.sweep_start, self.layout.sweep_end
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)
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return self.sweep_end_time - travel_time
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@property
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def sweep_end_time(self) -> timedelta:
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return self.tot
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def tot_for_waypoint(self, waypoint: FlightWaypoint) -> timedelta | None:
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if waypoint == self.layout.sweep_start:
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return self.sweep_start_time
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if waypoint == self.layout.sweep_end:
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return self.sweep_end_time
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return None
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def depart_time_for_waypoint(self, waypoint: FlightWaypoint) -> timedelta | None:
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if waypoint == self.layout.hold:
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return self.push_time
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return None
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@property
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def push_time(self) -> timedelta:
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return self.sweep_end_time - TravelTime.between_points(
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self.layout.hold.position,
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self.layout.sweep_end.position,
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GroundSpeed.for_flight(self.flight, self.layout.hold.alt),
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)
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@property
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def mission_begin_on_station_time(self) -> timedelta | None:
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return None
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def mission_departure_time(self) -> timedelta:
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return self.sweep_end_time
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class Builder(IBuilder[SweepFlightPlan, SweepLayout]):
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def layout(self) -> SweepLayout:
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assert self.package.waypoints is not None
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target = self.package.target.position
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heading = Heading.from_degrees(
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self.package.waypoints.join.heading_between_point(target)
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)
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start_pos = target.point_from_heading(
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heading.degrees, -self.doctrine.sweep_distance.meters
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)
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builder = WaypointBuilder(self.flight, self.coalition)
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start, end = builder.sweep(start_pos, target, self.doctrine.ingress_altitude)
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hold = builder.hold(self._hold_point())
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return SweepLayout(
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departure=builder.takeoff(self.flight.departure),
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hold=hold,
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nav_to=builder.nav_path(
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hold.position, start.position, self.doctrine.ingress_altitude
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),
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nav_from=builder.nav_path(
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end.position,
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self.flight.arrival.position,
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self.doctrine.ingress_altitude,
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),
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sweep_start=start,
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sweep_end=end,
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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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def _hold_point(self) -> Point:
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assert self.package.waypoints is not None
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origin = self.flight.departure.position
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target = self.package.target.position
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join = self.package.waypoints.join
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ip = self.package.waypoints.ingress
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return HoldZoneGeometry(
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target, origin, ip, join, self.coalition, self.theater
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).find_best_hold_point()
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def build(self) -> SweepFlightPlan:
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return SweepFlightPlan(self.flight, self.layout())
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