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https://github.com/dcs-retribution/dcs-retribution.git
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489b4d6acf
Like the comment says this rarely has any effect due to the ordering of flight planning and convoy creation. Could be separated, but opfor will still not be able to target any convoys that the player creates in the UI on that turn because they planning is done before the player can use the UI. Multi-turn transfers will be targetable, however.
257 lines
8.8 KiB
Python
257 lines
8.8 KiB
Python
from __future__ import annotations
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import logging
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from collections import defaultdict
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from dataclasses import dataclass, field
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from typing import Dict, Iterator, List, Optional, TYPE_CHECKING, Type
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from dcs.unittype import VehicleType
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if TYPE_CHECKING:
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pass
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from game.theater import ControlPoint, MissionTarget
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from game.theater.supplyroutes import SupplyRoute
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from gen.naming import namegen
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from gen.flights.flight import FlightType
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@dataclass
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class TransferOrder:
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"""The base type of all transfer orders.
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A transfer order can transfer multiple units of multiple types.
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"""
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#: The location the units are transferring from.
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origin: ControlPoint
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#: The location the units are transferring to.
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destination: ControlPoint
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#: True if the transfer order belongs to the player.
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player: bool
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@dataclass
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class RoadTransferOrder(TransferOrder):
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"""A transfer order that moves units by road."""
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#: The units being transferred.
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units: Dict[Type[VehicleType], int]
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#: The current position of the group being transferred. Groups move one control
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#: point a turn through the supply line.
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position: ControlPoint = field(init=False)
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def __post_init__(self) -> None:
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self.position = self.origin
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def path(self) -> List[ControlPoint]:
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supply_route = SupplyRoute.for_control_point(self.position)
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return supply_route.shortest_path_between(self.position, self.destination)
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def next_stop(self) -> ControlPoint:
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return self.path()[0]
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class Convoy(MissionTarget):
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def __init__(self, origin: ControlPoint, destination: ControlPoint) -> None:
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super().__init__(namegen.next_convoy_name(), origin.position)
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self.origin = origin
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self.destination = destination
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self.transfers: List[RoadTransferOrder] = []
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def mission_types(self, for_player: bool) -> Iterator[FlightType]:
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if self.is_friendly(for_player):
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return
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yield FlightType.BAI
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yield from super().mission_types(for_player)
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def is_friendly(self, to_player: bool) -> bool:
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return self.origin.captured
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def add_units(self, transfer: RoadTransferOrder) -> None:
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self.transfers.append(transfer)
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def remove_units(self, transfer: RoadTransferOrder) -> None:
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self.transfers.remove(transfer)
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def kill_unit(self, unit_type: Type[VehicleType]) -> None:
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for transfer in self.transfers:
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if unit_type in transfer.units:
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transfer.units[unit_type] -= 1
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return
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raise KeyError
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@property
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def size(self) -> int:
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return sum(sum(t.units.values()) for t in self.transfers)
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@property
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def units(self) -> Dict[Type[VehicleType], int]:
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units: Dict[Type[VehicleType], int] = defaultdict(int)
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for transfer in self.transfers:
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for unit_type, count in transfer.units.items():
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units[unit_type] += count
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return units
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@property
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def player_owned(self) -> bool:
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return self.origin.captured
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class ConvoyMap:
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def __init__(self) -> None:
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# Dict of origin -> destination -> convoy.
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self.convoys: Dict[ControlPoint, Dict[ControlPoint, Convoy]] = defaultdict(dict)
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def convoy_exists(self, origin: ControlPoint, destination: ControlPoint) -> bool:
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return destination in self.convoys[origin]
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def find_convoy(
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self, origin: ControlPoint, destination: ControlPoint
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) -> Optional[Convoy]:
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return self.convoys[origin].get(destination)
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def find_or_create_convoy(
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self, origin: ControlPoint, destination: ControlPoint
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) -> Convoy:
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convoy = self.find_convoy(origin, destination)
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if convoy is None:
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convoy = Convoy(origin, destination)
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self.convoys[origin][destination] = convoy
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return convoy
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def departing_from(self, origin: ControlPoint) -> Iterator[Convoy]:
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yield from self.convoys[origin].values()
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def travelling_to(self, destination: ControlPoint) -> Iterator[Convoy]:
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for destination_dict in self.convoys.values():
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if destination in destination_dict:
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yield destination_dict[destination]
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def disband_convoy(self, convoy: Convoy) -> None:
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del self.convoys[convoy.origin][convoy.destination]
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def add(self, transfer: RoadTransferOrder) -> None:
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next_stop = transfer.next_stop()
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self.find_or_create_convoy(transfer.position, next_stop).add_units(transfer)
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def remove(self, transfer: RoadTransferOrder) -> None:
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next_stop = transfer.next_stop()
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convoy = self.find_convoy(transfer.position, next_stop)
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if convoy is None:
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logging.error(
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f"Attempting to remove {transfer} from convoy but it is in no convoy."
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)
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return
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convoy.remove_units(transfer)
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if not convoy.transfers:
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self.disband_convoy(convoy)
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def disband_all(self) -> None:
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self.convoys = defaultdict(dict)
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def __iter__(self) -> Iterator[Convoy]:
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for destination_dict in self.convoys.values():
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yield from destination_dict.values()
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class PendingTransfers:
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def __init__(self) -> None:
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self.convoys = ConvoyMap()
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self.pending_transfers: List[RoadTransferOrder] = []
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def __iter__(self) -> Iterator[RoadTransferOrder]:
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yield from self.pending_transfers
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@property
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def pending_transfer_count(self) -> int:
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return len(self.pending_transfers)
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def transfer_at_index(self, index: int) -> RoadTransferOrder:
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return self.pending_transfers[index]
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def new_transfer(self, transfer: RoadTransferOrder) -> None:
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transfer.origin.base.commit_losses(transfer.units)
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self.pending_transfers.append(transfer)
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self.convoys.add(transfer)
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def cancel_transfer(self, transfer: RoadTransferOrder) -> None:
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self.convoys.remove(transfer)
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self.pending_transfers.remove(transfer)
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transfer.origin.base.commision_units(transfer.units)
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def perform_transfers(self) -> None:
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incomplete = []
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for transfer in self.pending_transfers:
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if not self.perform_transfer(transfer):
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incomplete.append(transfer)
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self.pending_transfers = incomplete
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self.rebuild_convoys()
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def rebuild_convoys(self) -> None:
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self.convoys.disband_all()
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for transfer in self.pending_transfers:
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self.convoys.add(transfer)
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def perform_transfer(self, transfer: RoadTransferOrder) -> bool:
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# TODO: Can be improved to use the convoy map.
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# The convoy map already has a lot of the data that we're recomputing here.
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if transfer.player != transfer.destination.captured:
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logging.info(
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f"Transfer destination {transfer.destination.name} was captured."
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)
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self.handle_route_interrupted(transfer)
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return True
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supply_route = SupplyRoute.for_control_point(transfer.destination)
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if transfer.position not in supply_route:
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logging.info(
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f"Route from {transfer.position.name} to {transfer.destination.name} "
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"was cut off."
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)
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self.handle_route_interrupted(transfer)
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return True
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path = transfer.path()
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next_hop = path[0]
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if next_hop == transfer.destination:
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logging.info(
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f"Units transferred from {transfer.origin.name} to "
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f"{transfer.destination.name}"
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)
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transfer.destination.base.commision_units(transfer.units)
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return True
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logging.info(
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f"Units transferring from {transfer.origin.name} to "
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f"{transfer.destination.name} arrived at {next_hop.name}. {len(path) - 1} "
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"turns remaining."
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)
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transfer.position = next_hop
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return False
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@staticmethod
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def handle_route_interrupted(transfer: RoadTransferOrder):
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# Halt the transfer in place if safe.
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if transfer.player == transfer.position.captured:
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logging.info(f"Transferring units are halting at {transfer.position.name}.")
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transfer.position.base.commision_units(transfer.units)
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return
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# If the current position was captured attempt to divert to a neighboring
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# friendly CP.
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for connected in transfer.position.connected_points:
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if connected.captured == transfer.player:
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logging.info(f"Transferring units are re-routing to {connected.name}.")
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connected.base.commision_units(transfer.units)
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return
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# If the units are cutoff they are destroyed.
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logging.info(
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f"Both {transfer.position.name} and {transfer.destination.name} were "
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"captured. Units were surrounded and destroyed during transfer."
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)
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