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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.
148 lines
4.5 KiB
Python
148 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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class Builder(IBuilder):
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def build(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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refuel = None
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if self.package.waypoints is not None:
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refuel = builder.refuel(self.package.waypoints.refuel)
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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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refuel=refuel,
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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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@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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refuel: FlightWaypoint | None
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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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if self.refuel is not None:
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yield self.refuel
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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 | None:
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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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def mission_departure_time(self) -> timedelta:
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return self.sweep_end_time
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