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https://github.com/dcs-retribution/dcs-retribution.git
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1e041b6249
Mission planning on a per-control point basis lacked the context it needed to make good decisions, and the ability to make larger missions that pulled aircraft from multiple airfields. The per-CP planners have been replaced in favor of a global planner per coalition. The planner generates a list of potential missions in order of priority and then allocates aircraft to the proposed flights until no missions remain. Mission planning behavior has changed: * CAP flights will now only be generated for airfields within a predefined threat range of an enemy airfield. * CAS, SEAD, and strike missions get escorts. Strike missions get a SEAD flight. * CAS, SEAD, and strike missions will not be planned unless they have an escort available. * Missions may originate from multiple airfields. There's more to do: * The range limitations imposed on the mission planner should take aircraft range limitations into account. * Air superiority aircraft like the F-15 should be preferred for CAP over multi-role aircraft like the F/A-18 since otherwise we run the risk of running out of ground attack capable aircraft even though there are still unused aircraft. * Mission priorities may need tuning. * Target areas could be analyzed for potential threats, allowing escort flights to be optional or omitted if there is no threat to defend against. For example, late game a SEAD flight for a strike mission probably is not necessary. * SAM threat should be judged by how close the extent of the SAM's range is to friendly locations, not the distance to the site itself. An SA-10 30 nm away is more threatening than an SA-6 25 nm away. * Much of the planning behavior should be factored out into the coalition's doctrine. But as-is this is an improvement over the existing behavior, so those things can be follow ups. The potential regression in behavior here is that we're no longer planning multiple cycles of missions. Each objective will get one CAP. I think this fits better with the turn cycle of the game, as a CAP flight should be able to remain on station for the duration of the turn (especially with refueling). Note that this does break save compatibility as the old planner was a part of the game object, and since that class is now gone it can't be unpickled.
583 lines
21 KiB
Python
583 lines
21 KiB
Python
"""Flight plan generation.
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Flights are first planned generically by either the player or by the
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MissionPlanner. Those only plan basic information like the objective, aircraft
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type, and the size of the flight. The FlightPlanBuilder is responsible for
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generating the waypoints for the mission.
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"""
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from __future__ import annotations
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import logging
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import random
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from typing import List, Optional, TYPE_CHECKING
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from game.data.doctrine import MODERN_DOCTRINE
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from .flight import Flight, FlightType, FlightWaypointType, FlightWaypoint
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from ..conflictgen import Conflict
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from theater import ControlPoint, FrontLine, MissionTarget, TheaterGroundObject
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from game.utils import nm_to_meter
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from dcs.unit import Unit
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if TYPE_CHECKING:
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from game import Game
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class InvalidObjectiveLocation(RuntimeError):
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"""Raised when the objective location is invalid for the mission type."""
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def __init__(self, task: FlightType, location: MissionTarget) -> None:
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super().__init__(
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f"{location.name} is not valid for {task.name} missions."
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)
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class FlightPlanBuilder:
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"""Generates flight plans for flights."""
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def __init__(self, game: Game, is_player: bool) -> None:
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self.game = game
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if is_player:
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faction = self.game.player_faction
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else:
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faction = self.game.enemy_faction
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self.doctrine = faction.get("doctrine", MODERN_DOCTRINE)
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def populate_flight_plan(self, flight: Flight,
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objective_location: MissionTarget) -> None:
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"""Creates a default flight plan for the given mission."""
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# TODO: Flesh out mission types.
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try:
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task = flight.flight_type
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if task == FlightType.ANTISHIP:
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logging.error(
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"Anti-ship flight plan generation not implemented"
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)
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elif task == FlightType.BAI:
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logging.error("BAI flight plan generation not implemented")
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elif task == FlightType.BARCAP:
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self.generate_barcap(flight, objective_location)
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elif task == FlightType.CAP:
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self.generate_barcap(flight, objective_location)
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elif task == FlightType.CAS:
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self.generate_cas(flight, objective_location)
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elif task == FlightType.DEAD:
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self.generate_sead(flight, objective_location)
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elif task == FlightType.ELINT:
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logging.error("ELINT flight plan generation not implemented")
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elif task == FlightType.EVAC:
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logging.error("Evac flight plan generation not implemented")
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elif task == FlightType.EWAR:
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logging.error("EWar flight plan generation not implemented")
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elif task == FlightType.INTERCEPTION:
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logging.error(
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"Intercept flight plan generation not implemented"
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)
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elif task == FlightType.LOGISTICS:
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logging.error(
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"Logistics flight plan generation not implemented"
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)
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elif task == FlightType.RECON:
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logging.error("Recon flight plan generation not implemented")
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elif task == FlightType.SEAD:
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self.generate_sead(flight, objective_location)
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elif task == FlightType.STRIKE:
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self.generate_strike(flight, objective_location)
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elif task == FlightType.TARCAP:
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self.generate_frontline_cap(flight, objective_location)
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elif task == FlightType.TROOP_TRANSPORT:
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logging.error(
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"Troop transport flight plan generation not implemented"
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)
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except InvalidObjectiveLocation as ex:
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logging.error(f"Could not create flight plan: {ex}")
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def generate_strike(self, flight: Flight, location: MissionTarget) -> None:
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"""Generates a strike flight plan.
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Args:
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flight: The flight to generate the flight plan for.
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location: The strike target location.
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"""
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# TODO: Support airfield strikes.
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if not isinstance(location, TheaterGroundObject):
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raise InvalidObjectiveLocation(flight.flight_type, location)
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# TODO: Stop clobbering flight type.
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flight.flight_type = FlightType.STRIKE
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ascend = self.generate_ascend_point(flight.from_cp)
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flight.points.append(ascend)
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heading = flight.from_cp.position.heading_between_point(
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location.position
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)
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ingress_heading = heading - 180 + 25
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egress_heading = heading - 180 - 25
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ingress_pos = location.position.point_from_heading(
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ingress_heading, self.doctrine["INGRESS_EGRESS_DISTANCE"]
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)
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ingress_point = FlightWaypoint(
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FlightWaypointType.INGRESS_STRIKE,
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ingress_pos.x,
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ingress_pos.y,
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self.doctrine["INGRESS_ALT"]
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)
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ingress_point.pretty_name = "INGRESS on " + location.name
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ingress_point.description = "INGRESS on " + location.name
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ingress_point.name = "INGRESS"
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flight.points.append(ingress_point)
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if len(location.groups) > 0 and location.dcs_identifier == "AA":
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for g in location.groups:
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for j, u in enumerate(g.units):
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point = FlightWaypoint(
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FlightWaypointType.TARGET_POINT,
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u.position.x,
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u.position.y,
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0
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)
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point.description = (
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f"STRIKE [{location.name}] : {u.type} #{j}"
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)
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point.pretty_name = (
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f"STRIKE [{location.name}] : {u.type} #{j}"
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)
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point.name = f"{location.name} #{j}"
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point.only_for_player = True
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ingress_point.targets.append(location)
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flight.points.append(point)
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else:
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if hasattr(location, "obj_name"):
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buildings = self.game.theater.find_ground_objects_by_obj_name(
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location.obj_name
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)
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for building in buildings:
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if building.is_dead:
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continue
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point = FlightWaypoint(
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FlightWaypointType.TARGET_POINT,
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building.position.x,
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building.position.y,
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0
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)
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point.description = (
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f"STRIKE on {building.obj_name} {building.category} "
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f"[{building.dcs_identifier}]"
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)
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point.pretty_name = (
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f"STRIKE on {building.obj_name} {building.category} "
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f"[{building.dcs_identifier}]"
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)
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point.name = building.obj_name
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point.only_for_player = True
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ingress_point.targets.append(building)
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flight.points.append(point)
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else:
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point = FlightWaypoint(
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FlightWaypointType.TARGET_GROUP_LOC,
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location.position.x,
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location.position.y,
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0
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)
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point.description = "STRIKE on " + location.name
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point.pretty_name = "STRIKE on " + location.name
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point.name = location.name
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point.only_for_player = True
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ingress_point.targets.append(location)
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flight.points.append(point)
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egress_pos = location.position.point_from_heading(
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egress_heading, self.doctrine["INGRESS_EGRESS_DISTANCE"]
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)
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egress_point = FlightWaypoint(
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FlightWaypointType.EGRESS,
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egress_pos.x,
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egress_pos.y,
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self.doctrine["EGRESS_ALT"]
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)
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egress_point.name = "EGRESS"
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egress_point.pretty_name = "EGRESS from " + location.name
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egress_point.description = "EGRESS from " + location.name
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flight.points.append(egress_point)
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descend = self.generate_descend_point(flight.from_cp)
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flight.points.append(descend)
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rtb = self.generate_rtb_waypoint(flight.from_cp)
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flight.points.append(rtb)
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def generate_barcap(self, flight: Flight, location: MissionTarget) -> None:
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"""Generate a BARCAP flight at a given location.
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Args:
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flight: The flight to generate the flight plan for.
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location: The control point to protect.
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"""
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if isinstance(location, FrontLine):
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raise InvalidObjectiveLocation(flight.flight_type, location)
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if isinstance(location, ControlPoint) and location.is_carrier:
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flight.flight_type = FlightType.BARCAP
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else:
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flight.flight_type = FlightType.CAP
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patrol_alt = random.randint(
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self.doctrine["PATROL_ALT_RANGE"][0],
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self.doctrine["PATROL_ALT_RANGE"][1]
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)
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loc = location.position.point_from_heading(
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random.randint(0, 360),
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random.randint(self.doctrine["CAP_DISTANCE_FROM_CP"][0],
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self.doctrine["CAP_DISTANCE_FROM_CP"][1])
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)
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hdg = location.position.heading_between_point(loc)
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radius = random.randint(
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self.doctrine["CAP_PATTERN_LENGTH"][0],
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self.doctrine["CAP_PATTERN_LENGTH"][1]
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)
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orbit0p = loc.point_from_heading(hdg - 90, radius)
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orbit1p = loc.point_from_heading(hdg + 90, radius)
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# Create points
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ascend = self.generate_ascend_point(flight.from_cp)
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flight.points.append(ascend)
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orbit0 = FlightWaypoint(
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FlightWaypointType.PATROL_TRACK,
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orbit0p.x,
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orbit0p.y,
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patrol_alt
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)
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orbit0.name = "ORBIT 0"
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orbit0.description = "Standby between this point and the next one"
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orbit0.pretty_name = "Race-track start"
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flight.points.append(orbit0)
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orbit1 = FlightWaypoint(
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FlightWaypointType.PATROL,
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orbit1p.x,
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orbit1p.y,
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patrol_alt
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)
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orbit1.name = "ORBIT 1"
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orbit1.description = "Standby between this point and the previous one"
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orbit1.pretty_name = "Race-track end"
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flight.points.append(orbit1)
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orbit0.targets.append(location)
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descend = self.generate_descend_point(flight.from_cp)
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flight.points.append(descend)
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rtb = self.generate_rtb_waypoint(flight.from_cp)
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flight.points.append(rtb)
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def generate_frontline_cap(self, flight: Flight,
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location: MissionTarget) -> None:
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"""Generate a CAP flight plan for the given front line.
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Args:
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flight: The flight to generate the flight plan for.
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location: Front line to protect.
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"""
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if not isinstance(location, FrontLine):
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raise InvalidObjectiveLocation(flight.flight_type, location)
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ally_cp, enemy_cp = location.control_points
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flight.flight_type = FlightType.CAP
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patrol_alt = random.randint(self.doctrine["PATROL_ALT_RANGE"][0],
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self.doctrine["PATROL_ALT_RANGE"][1])
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# Find targets waypoints
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ingress, heading, distance = Conflict.frontline_vector(
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ally_cp, enemy_cp, self.game.theater
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)
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center = ingress.point_from_heading(heading, distance / 2)
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orbit_center = center.point_from_heading(
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heading - 90, random.randint(nm_to_meter(6), nm_to_meter(15))
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)
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combat_width = distance / 2
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if combat_width > 500000:
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combat_width = 500000
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if combat_width < 35000:
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combat_width = 35000
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radius = combat_width*1.25
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orbit0p = orbit_center.point_from_heading(heading, radius)
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orbit1p = orbit_center.point_from_heading(heading + 180, radius)
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# Create points
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ascend = self.generate_ascend_point(flight.from_cp)
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flight.points.append(ascend)
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orbit0 = FlightWaypoint(
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FlightWaypointType.PATROL_TRACK,
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orbit0p.x,
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orbit0p.y,
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patrol_alt
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)
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orbit0.name = "ORBIT 0"
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orbit0.description = "Standby between this point and the next one"
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orbit0.pretty_name = "Race-track start"
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flight.points.append(orbit0)
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orbit1 = FlightWaypoint(
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FlightWaypointType.PATROL,
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orbit1p.x,
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orbit1p.y,
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patrol_alt
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)
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orbit1.name = "ORBIT 1"
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orbit1.description = "Standby between this point and the previous one"
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orbit1.pretty_name = "Race-track end"
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flight.points.append(orbit1)
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# Note: Targets of PATROL TRACK waypoints are the points to be defended.
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orbit0.targets.append(flight.from_cp)
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orbit0.targets.append(center)
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descend = self.generate_descend_point(flight.from_cp)
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flight.points.append(descend)
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rtb = self.generate_rtb_waypoint(flight.from_cp)
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flight.points.append(rtb)
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def generate_sead(self, flight: Flight, location: MissionTarget,
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custom_targets: Optional[List[Unit]] = None) -> None:
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"""Generate a SEAD/DEAD flight at a given location.
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Args:
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flight: The flight to generate the flight plan for.
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location: Location of the SAM site.
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custom_targets: Specific radar equipped units selected by the user.
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"""
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if not isinstance(location, TheaterGroundObject):
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raise InvalidObjectiveLocation(flight.flight_type, location)
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if custom_targets is None:
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custom_targets = []
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flight.points = []
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flight.flight_type = random.choice([FlightType.SEAD, FlightType.DEAD])
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ascend = self.generate_ascend_point(flight.from_cp)
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flight.points.append(ascend)
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heading = flight.from_cp.position.heading_between_point(
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location.position
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)
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ingress_heading = heading - 180 + 25
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egress_heading = heading - 180 - 25
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ingress_pos = location.position.point_from_heading(
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ingress_heading, self.doctrine["INGRESS_EGRESS_DISTANCE"]
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)
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ingress_point = FlightWaypoint(
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FlightWaypointType.INGRESS_SEAD,
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ingress_pos.x,
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ingress_pos.y,
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self.doctrine["INGRESS_ALT"]
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)
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ingress_point.name = "INGRESS"
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ingress_point.pretty_name = "INGRESS on " + location.name
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ingress_point.description = "INGRESS on " + location.name
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flight.points.append(ingress_point)
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if len(custom_targets) > 0:
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for target in custom_targets:
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point = FlightWaypoint(
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FlightWaypointType.TARGET_POINT,
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target.position.x,
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target.position.y,
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0
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)
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point.alt_type = "RADIO"
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if flight.flight_type == FlightType.DEAD:
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point.description = "DEAD on " + target.type
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point.pretty_name = "DEAD on " + location.name
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point.only_for_player = True
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else:
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point.description = "SEAD on " + location.name
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point.pretty_name = "SEAD on " + location.name
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point.only_for_player = True
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flight.points.append(point)
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ingress_point.targets.append(location)
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ingress_point.targetGroup = location
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else:
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point = FlightWaypoint(
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FlightWaypointType.TARGET_GROUP_LOC,
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location.position.x,
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location.position.y,
|
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0
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)
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point.alt_type = "RADIO"
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if flight.flight_type == FlightType.DEAD:
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point.description = "DEAD on " + location.name
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point.pretty_name = "DEAD on " + location.name
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point.only_for_player = True
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else:
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point.description = "SEAD on " + location.name
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point.pretty_name = "SEAD on " + location.name
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point.only_for_player = True
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ingress_point.targets.append(location)
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ingress_point.targetGroup = location
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flight.points.append(point)
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egress_pos = location.position.point_from_heading(
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egress_heading, self.doctrine["INGRESS_EGRESS_DISTANCE"]
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)
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egress_point = FlightWaypoint(
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FlightWaypointType.EGRESS,
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egress_pos.x,
|
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egress_pos.y,
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self.doctrine["EGRESS_ALT"]
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)
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egress_point.name = "EGRESS"
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egress_point.pretty_name = "EGRESS from " + location.name
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egress_point.description = "EGRESS from " + location.name
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flight.points.append(egress_point)
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descend = self.generate_descend_point(flight.from_cp)
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flight.points.append(descend)
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|
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rtb = self.generate_rtb_waypoint(flight.from_cp)
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flight.points.append(rtb)
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|
|
def generate_cas(self, flight: Flight, location: MissionTarget) -> None:
|
|
"""Generate a CAS flight plan for the given target.
|
|
|
|
Args:
|
|
flight: The flight to generate the flight plan for.
|
|
location: Front line with CAS targets.
|
|
"""
|
|
if not isinstance(location, FrontLine):
|
|
raise InvalidObjectiveLocation(flight.flight_type, location)
|
|
|
|
from_cp, location = location.control_points
|
|
is_helo = getattr(flight.unit_type, "helicopter", False)
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|
cap_alt = 1000
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flight.points = []
|
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flight.flight_type = FlightType.CAS
|
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|
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ingress, heading, distance = Conflict.frontline_vector(
|
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from_cp, location, self.game.theater
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)
|
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center = ingress.point_from_heading(heading, distance / 2)
|
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egress = ingress.point_from_heading(heading, distance)
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|
|
ascend = self.generate_ascend_point(flight.from_cp)
|
|
if is_helo:
|
|
cap_alt = 500
|
|
ascend.alt = 500
|
|
flight.points.append(ascend)
|
|
|
|
ingress_point = FlightWaypoint(
|
|
FlightWaypointType.INGRESS_CAS,
|
|
ingress.x,
|
|
ingress.y,
|
|
cap_alt
|
|
)
|
|
ingress_point.alt_type = "RADIO"
|
|
ingress_point.name = "INGRESS"
|
|
ingress_point.pretty_name = "INGRESS"
|
|
ingress_point.description = "Ingress into CAS area"
|
|
flight.points.append(ingress_point)
|
|
|
|
center_point = FlightWaypoint(
|
|
FlightWaypointType.CAS,
|
|
center.x,
|
|
center.y,
|
|
cap_alt
|
|
)
|
|
center_point.alt_type = "RADIO"
|
|
center_point.description = "Provide CAS"
|
|
center_point.name = "CAS"
|
|
center_point.pretty_name = "CAS"
|
|
flight.points.append(center_point)
|
|
|
|
egress_point = FlightWaypoint(
|
|
FlightWaypointType.EGRESS,
|
|
egress.x,
|
|
egress.y,
|
|
cap_alt
|
|
)
|
|
egress_point.alt_type = "RADIO"
|
|
egress_point.description = "Egress from CAS area"
|
|
egress_point.name = "EGRESS"
|
|
egress_point.pretty_name = "EGRESS"
|
|
flight.points.append(egress_point)
|
|
|
|
descend = self.generate_descend_point(flight.from_cp)
|
|
if is_helo:
|
|
descend.alt = 300
|
|
flight.points.append(descend)
|
|
|
|
rtb = self.generate_rtb_waypoint(flight.from_cp)
|
|
flight.points.append(rtb)
|
|
|
|
def generate_ascend_point(self, departure: ControlPoint) -> FlightWaypoint:
|
|
"""Generate ascend point.
|
|
|
|
Args:
|
|
departure: Departure airfield or carrier.
|
|
"""
|
|
ascend_heading = departure.heading
|
|
pos_ascend = departure.position.point_from_heading(
|
|
ascend_heading, 10000
|
|
)
|
|
ascend = FlightWaypoint(
|
|
FlightWaypointType.ASCEND_POINT,
|
|
pos_ascend.x,
|
|
pos_ascend.y,
|
|
self.doctrine["PATTERN_ALTITUDE"]
|
|
)
|
|
ascend.name = "ASCEND"
|
|
ascend.alt_type = "RADIO"
|
|
ascend.description = "Ascend"
|
|
ascend.pretty_name = "Ascend"
|
|
return ascend
|
|
|
|
def generate_descend_point(self, arrival: ControlPoint) -> FlightWaypoint:
|
|
"""Generate approach/descend point.
|
|
|
|
Args:
|
|
arrival: Arrival airfield or carrier.
|
|
"""
|
|
ascend_heading = arrival.heading
|
|
descend = arrival.position.point_from_heading(
|
|
ascend_heading - 180, 10000
|
|
)
|
|
descend = FlightWaypoint(
|
|
FlightWaypointType.DESCENT_POINT,
|
|
descend.x,
|
|
descend.y,
|
|
self.doctrine["PATTERN_ALTITUDE"]
|
|
)
|
|
descend.name = "DESCEND"
|
|
descend.alt_type = "RADIO"
|
|
descend.description = "Descend to pattern alt"
|
|
descend.pretty_name = "Descend to pattern alt"
|
|
return descend
|
|
|
|
@staticmethod
|
|
def generate_rtb_waypoint(arrival: ControlPoint) -> FlightWaypoint:
|
|
"""Generate RTB landing point.
|
|
|
|
Args:
|
|
arrival: Arrival airfield or carrier.
|
|
"""
|
|
rtb = arrival.position
|
|
rtb = FlightWaypoint(
|
|
FlightWaypointType.LANDING_POINT,
|
|
rtb.x,
|
|
rtb.y,
|
|
0
|
|
)
|
|
rtb.name = "LANDING"
|
|
rtb.alt_type = "RADIO"
|
|
rtb.description = "RTB"
|
|
rtb.pretty_name = "RTB"
|
|
return rtb
|