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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.
88 lines
2.7 KiB
Python
88 lines
2.7 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 .planningerror import PlanningError
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from .standard import StandardFlightPlan, StandardLayout
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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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@dataclass(frozen=True)
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class FerryLayout(StandardLayout):
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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 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 FerryFlightPlan(StandardFlightPlan[FerryLayout]):
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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 tot_waypoint(self) -> FlightWaypoint:
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return self.layout.arrival
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def tot_for_waypoint(self, waypoint: FlightWaypoint) -> timedelta | None:
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# TOT planning isn't really useful for ferries. They're behind the front
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# lines so no need to wait for escorts or for other missions to complete.
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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 self.package.time_over_target
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class Builder(IBuilder[FerryFlightPlan, FerryLayout]):
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def layout(self) -> FerryLayout:
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if self.flight.departure == self.flight.arrival:
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raise PlanningError(
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f"Cannot plan ferry self.flight: departure and arrival are both "
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f"{self.flight.departure}"
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)
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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.coalition)
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return FerryLayout(
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departure=builder.takeoff(self.flight.departure),
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nav_to_destination=builder.nav_path(
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self.flight.departure.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) -> FerryFlightPlan:
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return FerryFlightPlan(self.flight, self.layout())
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