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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.
23 lines
799 B
Python
23 lines
799 B
Python
from __future__ import annotations
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from dataclasses import dataclass
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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.transfers import CargoShip
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from gen.flights.flight import FlightType
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@dataclass
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class PlanAntiShipping(PackagePlanningTask[CargoShip]):
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def preconditions_met(self, state: TheaterState) -> bool:
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return self.target in state.enemy_shipping
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def apply_effects(self, state: TheaterState) -> None:
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state.enemy_shipping.remove(self.target)
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def propose_flights(self, doctrine: Doctrine) -> None:
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self.propose_flight(FlightType.ANTISHIP, 2, doctrine.mission_ranges.offensive)
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self.propose_common_escorts(doctrine)
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