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An HTN (https://en.wikipedia.org/wiki/Hierarchical_task_network) is similar to a decision tree, but it is able to reset to an earlier stage if a subtask fails and tasks are able to account for the changes in world state caused by earlier tasks. Currently this just uses exactly the same strategy as before so we can prove the system, but it should make it simpler to improve on task planning.
52 lines
2.0 KiB
Python
52 lines
2.0 KiB
Python
from __future__ import annotations
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from dataclasses import dataclass
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from game.commander.missionproposals import EscortType
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from game.commander.tasks.packageplanningtask import PackagePlanningTask
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from game.commander.theaterstate import TheaterState
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from game.data.doctrine import Doctrine
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from game.theater.theatergroundobject import IadsGroundObject
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from gen.flights.flight import FlightType
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@dataclass
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class PlanDead(PackagePlanningTask[IadsGroundObject]):
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def preconditions_met(self, state: TheaterState) -> bool:
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return self.target in state.threatening_air_defenses
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def apply_effects(self, state: TheaterState) -> None:
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state.threatening_air_defenses.remove(self.target)
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def propose_flights(self, doctrine: Doctrine) -> None:
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self.propose_flight(FlightType.DEAD, 2, doctrine.mission_ranges.offensive)
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# Only include SEAD against SAMs that still have emitters. No need to
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# suppress an EWR, and SEAD isn't useful against a SAM that no longer has a
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# working track radar.
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#
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# For SAMs without track radars and EWRs, we still want a SEAD escort if
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# needed.
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#
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# Note that there is a quirk here: we should potentially be included a SEAD
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# escort *and* SEAD when the target is a radar SAM but the flight path is
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# also threatened by SAMs. We don't want to include a SEAD escort if the
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# package is *only* threatened by the target though. Could be improved, but
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# needs a decent refactor to the escort planning to do so.
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if self.target.has_live_radar_sam:
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self.propose_flight(FlightType.SEAD, 2, doctrine.mission_ranges.offensive)
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else:
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self.propose_flight(
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FlightType.SEAD_ESCORT,
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2,
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doctrine.mission_ranges.offensive,
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EscortType.Sead,
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)
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self.propose_flight(
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FlightType.ESCORT,
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2,
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doctrine.mission_ranges.offensive,
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EscortType.AirToAir,
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)
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