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https://github.com/dcs-retribution/dcs-retribution.git
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126 lines
4.2 KiB
Python
126 lines
4.2 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.theater import FrontLine
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from game.utils import Distance, Speed, kph, meters
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from .ibuilder import IBuilder
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from .invalidobjectivelocation import InvalidObjectiveLocation
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from .patrolling import PatrollingFlightPlan, PatrollingLayout
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from .waypointbuilder import WaypointBuilder
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from ..flightwaypointtype import FlightWaypointType
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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 CasLayout(PatrollingLayout):
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target: 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
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yield self.patrol_start
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yield self.target
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yield self.patrol_end
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yield from self.nav_from
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yield self.departure
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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 CasFlightPlan(PatrollingFlightPlan[CasLayout]):
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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 patrol_duration(self) -> timedelta:
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return self.flight.coalition.doctrine.cas_duration
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@property
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def patrol_speed(self) -> Speed:
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# 2021-08-02: patrol_speed will currently have no effect because
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# CAS doesn't use OrbitAction. But all PatrollingFlightPlan are expected
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# to have patrol_speed
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return kph(0)
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@property
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def engagement_distance(self) -> Distance:
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max_length = self.flight.coalition.game.settings.max_frontline_length * 1000
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return meters(max_length) / 2
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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.target, self.layout.patrol_end}
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def request_escort_at(self) -> FlightWaypoint | None:
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return self.layout.patrol_start
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def dismiss_escort_at(self) -> FlightWaypoint | None:
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return self.layout.patrol_end
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class Builder(IBuilder[CasFlightPlan, CasLayout]):
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def layout(self) -> CasLayout:
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location = self.package.target
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if not isinstance(location, FrontLine):
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raise InvalidObjectiveLocation(self.flight.flight_type, location)
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from game.missiongenerator.frontlineconflictdescription import (
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FrontLineConflictDescription,
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)
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bounds = FrontLineConflictDescription.frontline_bounds(
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location, self.theater, self.coalition.game.settings
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)
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ingress = bounds.left_position
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center = bounds.center
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egress = bounds.right_position
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ingress_distance = ingress.distance_to_point(self.flight.departure.position)
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egress_distance = egress.distance_to_point(self.flight.departure.position)
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if egress_distance < ingress_distance:
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ingress, egress = egress, ingress
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builder = WaypointBuilder(self.flight, self.coalition)
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is_helo = self.flight.unit_type.dcs_unit_type.helicopter
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ingress_egress_altitude = (
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self.doctrine.ingress_altitude if not is_helo else meters(50)
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)
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use_agl_ingress_egress = is_helo
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return CasLayout(
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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,
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ingress,
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ingress_egress_altitude,
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use_agl_ingress_egress,
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),
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nav_from=builder.nav_path(
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egress,
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self.flight.arrival.position,
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ingress_egress_altitude,
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use_agl_ingress_egress,
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),
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patrol_start=builder.ingress(
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FlightWaypointType.INGRESS_CAS, ingress, location
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),
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target=builder.cas(center),
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patrol_end=builder.egress(egress, location),
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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) -> CasFlightPlan:
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return CasFlightPlan(self.flight, self.layout())
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