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https://github.com/dcs-liberation/dcs_liberation.git
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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.
127 lines
4.0 KiB
Python
127 lines
4.0 KiB
Python
from __future__ import annotations
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import random
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from collections.abc import Iterator
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from dataclasses import dataclass
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from datetime import timedelta
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from typing import TYPE_CHECKING, Type
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from game.utils import Distance, Speed, feet
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from .capbuilder import CapBuilder
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from .patrolling import PatrollingFlightPlan, PatrollingLayout
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from .waypointbuilder import WaypointBuilder
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if TYPE_CHECKING:
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from ..flightwaypoint import FlightWaypoint
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class Builder(CapBuilder):
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def build(self) -> TarCapLayout:
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location = self.package.target
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preferred_alt = self.flight.unit_type.preferred_patrol_altitude
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randomized_alt = preferred_alt + feet(random.randint(-2, 1) * 1000)
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patrol_alt = max(
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self.doctrine.min_patrol_altitude,
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min(self.doctrine.max_patrol_altitude, randomized_alt),
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)
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builder = WaypointBuilder(self.flight, self.coalition)
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orbit0p, orbit1p = self.cap_racetrack_for_objective(location, barcap=False)
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start, end = builder.race_track(orbit0p, orbit1p, patrol_alt)
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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 TarCapLayout(
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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, orbit0p, patrol_alt
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),
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nav_from=builder.nav_path(
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orbit1p, self.flight.arrival.position, patrol_alt
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),
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patrol_start=start,
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patrol_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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@dataclass(frozen=True)
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class TarCapLayout(PatrollingLayout):
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refuel: FlightWaypoint | None
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def iter_waypoints(self) -> Iterator[FlightWaypoint]:
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yield self.departure
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yield from self.nav_to
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yield self.patrol_start
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yield self.patrol_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 TarCapFlightPlan(PatrollingFlightPlan[TarCapLayout]):
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@property
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def lead_time(self) -> timedelta:
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return timedelta(minutes=2)
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@property
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def patrol_duration(self) -> timedelta:
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# Note that this duration only has an effect if there are no
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# flights in the package that have requested escort. If the package
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# requests an escort the CAP self.flight will remain on station for the
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# duration of the escorted mission, or until it is winchester/bingo.
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return self.flight.coalition.doctrine.cap_duration
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@property
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def patrol_speed(self) -> Speed:
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return self.flight.unit_type.preferred_patrol_speed(
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self.layout.patrol_start.alt
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)
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@property
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def engagement_distance(self) -> Distance:
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return self.flight.coalition.doctrine.cap_engagement_range
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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.patrol_start, self.layout.patrol_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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def depart_time_for_waypoint(self, waypoint: FlightWaypoint) -> timedelta | None:
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if waypoint == self.layout.patrol_end:
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return self.patrol_end_time
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return super().depart_time_for_waypoint(waypoint)
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@property
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def patrol_start_time(self) -> timedelta:
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start = self.package.escort_start_time
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if start is not None:
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return start + self.tot_offset
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return self.tot
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@property
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def patrol_end_time(self) -> timedelta:
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end = self.package.escort_end_time
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if end is not None:
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return end
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return super().patrol_end_time
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