mirror of
https://github.com/dcs-liberation/dcs_liberation.git
synced 2025-11-10 14:22:26 +00:00
90ad1f4a61
https://github.com/dcs-liberation/dcs_liberation/issues/1145 Currently this is fixed at the start of the campaign. The squadron locations are defined by the campaign file. Follow up work: * Track aircraft ownership per-squadron rather than per-airbase. * UI for relocating squadrons. * Ferry missions for squadrons that are relocating. * Auto-relocation (probably only for retreat handling). Fixes https://github.com/dcs-liberation/dcs_liberation/issues/1138
380 lines
14 KiB
Python
380 lines
14 KiB
Python
from __future__ import annotations
|
|
|
|
import math
|
|
import random
|
|
from dataclasses import dataclass
|
|
from typing import Iterator, List, Optional, TYPE_CHECKING, Tuple
|
|
|
|
from game import db
|
|
from game.data.groundunitclass import GroundUnitClass
|
|
from game.dcs.aircrafttype import AircraftType
|
|
from game.dcs.groundunittype import GroundUnitType
|
|
from game.factions.faction import Faction
|
|
from game.squadrons import Squadron
|
|
from game.theater import ControlPoint, MissionTarget
|
|
from game.utils import meters
|
|
from gen.flights.ai_flight_planner_db import aircraft_for_task
|
|
from gen.flights.closestairfields import ObjectiveDistanceCache
|
|
from gen.flights.flight import FlightType
|
|
|
|
if TYPE_CHECKING:
|
|
from game import Game
|
|
|
|
FRONTLINE_RESERVES_FACTOR = 1.3
|
|
|
|
|
|
@dataclass(frozen=True)
|
|
class AircraftProcurementRequest:
|
|
near: MissionTarget
|
|
task_capability: FlightType
|
|
number: int
|
|
|
|
def __str__(self) -> str:
|
|
task = self.task_capability.value
|
|
target = self.near.name
|
|
return f"{self.number} ship {task} near {target}"
|
|
|
|
|
|
class ProcurementAi:
|
|
def __init__(
|
|
self,
|
|
game: Game,
|
|
for_player: bool,
|
|
faction: Faction,
|
|
manage_runways: bool,
|
|
manage_front_line: bool,
|
|
manage_aircraft: bool,
|
|
) -> None:
|
|
|
|
self.game = game
|
|
self.is_player = for_player
|
|
self.air_wing = game.air_wing_for(for_player)
|
|
self.faction = faction
|
|
self.manage_runways = manage_runways
|
|
self.manage_front_line = manage_front_line
|
|
self.manage_aircraft = manage_aircraft
|
|
self.threat_zones = self.game.threat_zone_for(not self.is_player)
|
|
|
|
def calculate_ground_unit_budget_share(self) -> float:
|
|
armor_investment = 0
|
|
aircraft_investment = 0
|
|
|
|
# faction has no ground units
|
|
if (
|
|
len(self.faction.artillery_units) == 0
|
|
and len(self.faction.frontline_units) == 0
|
|
):
|
|
return 0
|
|
|
|
# faction has no planes
|
|
if len(self.faction.aircrafts) == 0:
|
|
return 1
|
|
|
|
for cp in self.owned_points:
|
|
cp_ground_units = cp.allocated_ground_units(
|
|
self.game.coalition_for(self.is_player).transfers
|
|
)
|
|
armor_investment += cp_ground_units.total_value
|
|
cp_aircraft = cp.allocated_aircraft(self.game)
|
|
aircraft_investment += cp_aircraft.total_value
|
|
|
|
total_investment = aircraft_investment + armor_investment
|
|
if total_investment == 0:
|
|
# Turn 0 or all units were destroyed. Either way, split 30/70.
|
|
return 0.3
|
|
|
|
# the more planes we have, the more ground units we want and vice versa
|
|
ground_unit_share = aircraft_investment / total_investment
|
|
if ground_unit_share > 1.0:
|
|
raise ValueError
|
|
|
|
return ground_unit_share
|
|
|
|
def spend_budget(self, budget: float) -> float:
|
|
if self.manage_runways:
|
|
budget = self.repair_runways(budget)
|
|
if self.manage_front_line:
|
|
armor_budget = budget * self.calculate_ground_unit_budget_share()
|
|
budget -= armor_budget
|
|
budget += self.reinforce_front_line(armor_budget)
|
|
|
|
# Don't sell overstock aircraft until after we've bought runways and
|
|
# front lines. Any budget we free up should be earmarked for aircraft.
|
|
if not self.is_player:
|
|
budget += self.sell_incomplete_squadrons()
|
|
if self.manage_aircraft:
|
|
budget = self.purchase_aircraft(budget)
|
|
return budget
|
|
|
|
def sell_incomplete_squadrons(self) -> float:
|
|
# Selling incomplete squadrons gives us more money to spend on the next
|
|
# turn. This serves as a short term fix for
|
|
# https://github.com/dcs-liberation/dcs_liberation/issues/41.
|
|
#
|
|
# Only incomplete squadrons which are unlikely to get used will be sold
|
|
# rather than all unused aircraft because the unused aircraft are what
|
|
# make OCA strikes worthwhile.
|
|
#
|
|
# This option is only used by the AI since players cannot cancel sales
|
|
# (https://github.com/dcs-liberation/dcs_liberation/issues/365).
|
|
total = 0.0
|
|
for cp in self.game.theater.control_points_for(self.is_player):
|
|
inventory = self.game.aircraft_inventory.for_control_point(cp)
|
|
for aircraft, available in inventory.all_aircraft:
|
|
# We only ever plan even groups, so the odd aircraft is unlikely
|
|
# to get used.
|
|
if available % 2 == 0:
|
|
continue
|
|
inventory.remove_aircraft(aircraft, 1)
|
|
total += aircraft.price
|
|
return total
|
|
|
|
def repair_runways(self, budget: float) -> float:
|
|
for control_point in self.owned_points:
|
|
if budget < db.RUNWAY_REPAIR_COST:
|
|
break
|
|
if control_point.runway_can_be_repaired:
|
|
control_point.begin_runway_repair()
|
|
budget -= db.RUNWAY_REPAIR_COST
|
|
if self.is_player:
|
|
self.game.message(
|
|
"OPFOR has begun repairing the runway at " f"{control_point}"
|
|
)
|
|
else:
|
|
self.game.message(
|
|
"We have begun repairing the runway at " f"{control_point}"
|
|
)
|
|
return budget
|
|
|
|
def affordable_ground_unit_of_class(
|
|
self, budget: float, unit_class: GroundUnitClass
|
|
) -> Optional[GroundUnitType]:
|
|
faction_units = set(self.faction.frontline_units) | set(
|
|
self.faction.artillery_units
|
|
)
|
|
of_class = {u for u in faction_units if u.unit_class is unit_class}
|
|
|
|
# faction has no access to needed unit type, take a random unit
|
|
if not of_class:
|
|
of_class = faction_units
|
|
|
|
affordable_units = [u for u in of_class if u.price <= budget]
|
|
if not affordable_units:
|
|
return None
|
|
return random.choice(affordable_units)
|
|
|
|
def reinforce_front_line(self, budget: float) -> float:
|
|
if not self.faction.frontline_units and not self.faction.artillery_units:
|
|
return budget
|
|
|
|
# TODO: Attempt to transfer from reserves.
|
|
|
|
while budget > 0:
|
|
cp = self.ground_reinforcement_candidate()
|
|
if cp is None:
|
|
break
|
|
|
|
most_needed_type = self.most_needed_unit_class(cp)
|
|
unit = self.affordable_ground_unit_of_class(budget, most_needed_type)
|
|
if unit is None:
|
|
# Can't afford any more units.
|
|
break
|
|
|
|
budget -= unit.price
|
|
cp.pending_unit_deliveries.order({unit: 1})
|
|
|
|
return budget
|
|
|
|
def most_needed_unit_class(self, cp: ControlPoint) -> GroundUnitClass:
|
|
worst_balanced: Optional[GroundUnitClass] = None
|
|
worst_fulfillment = math.inf
|
|
for unit_class in GroundUnitClass:
|
|
if not self.faction.has_access_to_unittype(unit_class):
|
|
continue
|
|
|
|
current_ratio = self.cost_ratio_of_ground_unit(cp, unit_class)
|
|
desired_ratio = (
|
|
self.faction.doctrine.ground_unit_procurement_ratios.for_unit_class(
|
|
unit_class
|
|
)
|
|
)
|
|
if not desired_ratio:
|
|
continue
|
|
if current_ratio >= desired_ratio:
|
|
continue
|
|
fulfillment = current_ratio / desired_ratio
|
|
if fulfillment < worst_fulfillment:
|
|
worst_fulfillment = fulfillment
|
|
worst_balanced = unit_class
|
|
if worst_balanced is None:
|
|
return GroundUnitClass.Tank
|
|
return worst_balanced
|
|
|
|
@staticmethod
|
|
def _compatible_squadron_at(
|
|
aircraft: AircraftType, airbase: ControlPoint, task: FlightType, count: int
|
|
) -> Optional[Squadron]:
|
|
for squadron in airbase.squadrons:
|
|
if squadron.aircraft != aircraft:
|
|
continue
|
|
if not squadron.can_auto_assign(task):
|
|
continue
|
|
if not squadron.can_provide_pilots(count):
|
|
continue
|
|
return squadron
|
|
return None
|
|
|
|
def affordable_aircraft_for(
|
|
self, request: AircraftProcurementRequest, airbase: ControlPoint, budget: float
|
|
) -> Optional[AircraftType]:
|
|
best_choice: Optional[AircraftType] = None
|
|
for unit in aircraft_for_task(request.task_capability):
|
|
if unit.price * request.number > budget:
|
|
continue
|
|
|
|
squadron = self._compatible_squadron_at(
|
|
unit, airbase, request.task_capability, request.number
|
|
)
|
|
if squadron is None:
|
|
continue
|
|
|
|
distance_to_target = meters(request.near.distance_to(airbase))
|
|
if distance_to_target > unit.max_mission_range:
|
|
continue
|
|
|
|
# Affordable, compatible, and we have a squadron capable of the task. To
|
|
# keep some variety, skip with a 50/50 chance. Might be a good idea to have
|
|
# the chance to skip based on the price compared to the rest of the choices.
|
|
best_choice = unit
|
|
if random.choice([True, False]):
|
|
break
|
|
return best_choice
|
|
|
|
def fulfill_aircraft_request(
|
|
self, request: AircraftProcurementRequest, budget: float
|
|
) -> Tuple[float, bool]:
|
|
for airbase in self.best_airbases_for(request):
|
|
unit = self.affordable_aircraft_for(request, airbase, budget)
|
|
if unit is None:
|
|
# Can't afford any aircraft capable of performing the
|
|
# required mission that can operate from this airbase. We
|
|
# might be able to afford aircraft at other airbases though,
|
|
# in the case where the airbase we attempted to use is only
|
|
# able to operate expensive aircraft.
|
|
continue
|
|
|
|
budget -= unit.price * request.number
|
|
airbase.pending_unit_deliveries.order({unit: request.number})
|
|
return budget, True
|
|
return budget, False
|
|
|
|
def purchase_aircraft(self, budget: float) -> float:
|
|
for request in self.game.coalition_for(self.is_player).procurement_requests:
|
|
if not list(self.best_airbases_for(request)):
|
|
# No airbases in range of this request. Skip it.
|
|
continue
|
|
budget, fulfilled = self.fulfill_aircraft_request(request, budget)
|
|
if not fulfilled:
|
|
# The request was not fulfilled because we could not afford any suitable
|
|
# aircraft. Rather than continuing, which could proceed to buy tons of
|
|
# cheap escorts that will never allow us to plan a strike package, stop
|
|
# buying so we can save the budget until a turn where we *can* afford to
|
|
# fill the package.
|
|
break
|
|
return budget
|
|
|
|
@property
|
|
def owned_points(self) -> List[ControlPoint]:
|
|
if self.is_player:
|
|
return self.game.theater.player_points()
|
|
else:
|
|
return self.game.theater.enemy_points()
|
|
|
|
def best_airbases_for(
|
|
self, request: AircraftProcurementRequest
|
|
) -> Iterator[ControlPoint]:
|
|
distance_cache = ObjectiveDistanceCache.get_closest_airfields(request.near)
|
|
threatened = []
|
|
for cp in distance_cache.operational_airfields:
|
|
if not cp.is_friendly(self.is_player):
|
|
continue
|
|
if cp.unclaimed_parking(self.game) < request.number:
|
|
continue
|
|
if self.threat_zones.threatened(cp.position):
|
|
threatened.append(cp)
|
|
yield cp
|
|
yield from threatened
|
|
|
|
def ground_reinforcement_candidate(self) -> Optional[ControlPoint]:
|
|
worst_supply = math.inf
|
|
understaffed: Optional[ControlPoint] = None
|
|
|
|
# Prefer to buy front line units at active front lines that are not
|
|
# already overloaded.
|
|
for cp in self.owned_points:
|
|
if not cp.has_active_frontline:
|
|
continue
|
|
|
|
if not cp.has_ground_unit_source(self.game):
|
|
# No source of ground units, so can't buy anything.
|
|
continue
|
|
|
|
purchase_target = cp.frontline_unit_count_limit * FRONTLINE_RESERVES_FACTOR
|
|
allocated = cp.allocated_ground_units(
|
|
self.game.coalition_for(self.is_player).transfers
|
|
)
|
|
if allocated.total >= purchase_target:
|
|
# Control point is already sufficiently defended.
|
|
continue
|
|
if allocated.total < worst_supply:
|
|
worst_supply = allocated.total
|
|
understaffed = cp
|
|
|
|
if understaffed is not None:
|
|
return understaffed
|
|
|
|
# Otherwise buy reserves, but don't exceed the amount defined in the settings.
|
|
# These units do not exist in the world until the CP becomes
|
|
# connected to an active front line, at which point all these units
|
|
# will suddenly appear at the gates of the newly captured CP.
|
|
#
|
|
# To avoid sudden overwhelming numbers of units we avoid buying
|
|
# many.
|
|
#
|
|
# Also, do not bother buying units at bases that will never connect
|
|
# to a front line.
|
|
for cp in self.owned_points:
|
|
if cp.is_global:
|
|
continue
|
|
if not cp.can_recruit_ground_units(self.game):
|
|
continue
|
|
|
|
allocated = cp.allocated_ground_units(
|
|
self.game.coalition_for(self.is_player).transfers
|
|
)
|
|
if allocated.total >= self.game.settings.reserves_procurement_target:
|
|
continue
|
|
|
|
if allocated.total < worst_supply:
|
|
worst_supply = allocated.total
|
|
understaffed = cp
|
|
|
|
return understaffed
|
|
|
|
def cost_ratio_of_ground_unit(
|
|
self, control_point: ControlPoint, unit_class: GroundUnitClass
|
|
) -> float:
|
|
allocations = control_point.allocated_ground_units(
|
|
self.game.coalition_for(self.is_player).transfers
|
|
)
|
|
class_cost = 0
|
|
total_cost = 0
|
|
for unit_type, count in allocations.all.items():
|
|
cost = unit_type.price * count
|
|
total_cost += cost
|
|
if unit_type.unit_class is unit_class:
|
|
class_cost += cost
|
|
if not total_cost:
|
|
return 0
|
|
return class_cost / total_cost
|