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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.
98 lines
3.0 KiB
Python
98 lines
3.0 KiB
Python
from __future__ import annotations
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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 feet
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from .ibuilder import IBuilder
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from .standard import StandardFlightPlan, StandardLayout
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from .waypointbuilder import WaypointBuilder
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from ..flightstate import InFlight
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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 RtbLayout(StandardLayout):
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abort_location: FlightWaypoint
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nav_to_destination: 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.abort_location
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yield from self.nav_to_destination
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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 RtbFlightPlan(StandardFlightPlan[RtbLayout]):
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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 abort_index(self) -> int:
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return 1
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@property
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def tot_waypoint(self) -> FlightWaypoint:
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return self.layout.abort_location
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def tot_for_waypoint(self, waypoint: FlightWaypoint) -> timedelta | None:
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return None
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def depart_time_for_waypoint(self, waypoint: FlightWaypoint) -> timedelta | None:
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return None
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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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@property
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def mission_departure_time(self) -> timedelta:
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return timedelta()
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class Builder(IBuilder[RtbFlightPlan, RtbLayout]):
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def layout(self) -> RtbLayout:
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if not isinstance(self.flight.state, InFlight):
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raise RuntimeError(f"Cannot abort {self} because it is not in flight")
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current_position = self.flight.state.estimate_position()
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current_altitude, altitude_reference = self.flight.state.estimate_altitude()
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altitude_is_agl = self.flight.unit_type.dcs_unit_type.helicopter
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altitude = (
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feet(1500)
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if altitude_is_agl
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else self.flight.unit_type.preferred_patrol_altitude
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)
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builder = WaypointBuilder(self.flight, self.flight.coalition)
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abort_point = builder.nav(
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current_position, current_altitude, altitude_reference == "RADIO"
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)
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abort_point.name = "ABORT AND RTB"
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abort_point.pretty_name = "Abort and RTB"
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abort_point.description = "Abort mission and return to base"
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return RtbLayout(
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departure=builder.takeoff(self.flight.departure),
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abort_location=abort_point,
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nav_to_destination=builder.nav_path(
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current_position,
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self.flight.arrival.position,
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altitude,
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altitude_is_agl,
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),
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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 build(self) -> RtbFlightPlan:
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return RtbFlightPlan(self.flight, self.layout())
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