def _is_valid_fleet_mission_target(self, mission_type: MissionType,
target: Target):
if not target:
return False
if mission_type == MissionType.EXPLORATION:
if isinstance(target, TargetSystem):
empire = fo.getEmpire()
if not empire.hasExploredSystem(target.id):
return True
elif mission_type in [
MissionType.OUTPOST, MissionType.ORBITAL_OUTPOST
]:
fleet = self.fleet.get_object()
if not fleet.hasOutpostShips:
return False
if isinstance(target, TargetPlanet):
planet = target.get_object()
if planet.unowned:
return True
elif mission_type == MissionType.COLONISATION:
fleet = self.fleet.get_object()
if not fleet.hasColonyShips:
return False
if isinstance(target, TargetPlanet):
planet = target.get_object()
population = planet.initialMeterValue(fo.meterType.population)
if planet.unowned or (planet.owner == fleet.owner
and population == 0):
return True
elif mission_type in [
MissionType.INVASION, MissionType.ORBITAL_INVASION
]:
fleet = self.fleet.get_object()
if not fleet.hasTroopShips:
return False
if isinstance(target, TargetPlanet):
planet = target.get_object()
# TODO remove latter portion of next check in light of invasion retargeting, or else correct logic
if not planet.unowned or planet.owner != fleet.owner:
return True
elif mission_type in [
MissionType.MILITARY,
MissionType.SECURE,
MissionType.ORBITAL_DEFENSE,
MissionType.PROTECT_REGION,
]:
if isinstance(target, TargetSystem):
return True
# TODO: implement other mission types
return False
def trooper_move_reqs_met(invasion_target: Target, order: OrderMove,
verbose: bool) -> bool:
"""
Indicates whether or not move requirements specific to invasion troopers are met for the provided mission and order.
:param verbose: whether to print verbose decision details
"""
# Don't advance outside of our fleet-supply zone unless the target either has no shields at all or there
# is already a military fleet assigned to secure the target, and don't take final jump unless the planet is
# (to the AI's knowledge) down to zero shields. Additional checks will also be done by the later
# generic movement code
invasion_planet = invasion_target.get_object()
invasion_system = invasion_target.get_system()
supplied_systems = fo.getEmpire().fleetSupplyableSystemIDs
# if about to leave supply lines
if order.target.id not in supplied_systems or fo.getUniverse(
).jumpDistance(order.fleet.id, invasion_system.id) < 5:
if invasion_planet.currentMeterValue(fo.meterType.maxShield):
military_support_fleets = MilitaryAI.get_military_fleets_with_target_system(
invasion_system.id)
if not military_support_fleets:
if verbose:
debug(
"trooper_move_reqs_met() holding Invasion fleet %d before leaving supply "
"because target (%s) has nonzero max shields and there is not yet a military fleet "
"assigned to secure the target system." %
(order.fleet.id, invasion_planet))
return False
# if there is a threat in the enemy system, do give military ships at least 1 turn to clear it
delay_to_move_troops = 1 if MilitaryAI.get_system_local_threat(
order.target.id) else 0
def eta(fleet_id):
return FleetUtilsAI.calculate_estimated_time_of_arrival(
fleet_id, invasion_system.id)
eta_this_fleet = eta(order.fleet.id)
if all(((eta_this_fleet -
delay_to_move_troops) <= eta(fid) and eta(fid))
for fid in military_support_fleets):
if verbose:
debug(
"trooper_move_reqs_met() holding Invasion fleet %d before leaving supply "
"because target (%s) has nonzero max shields and no assigned military fleet would arrive"
"at least %d turn earlier than the invasion fleet" %
(order.fleet.id, invasion_planet,
delay_to_move_troops))
return False
if verbose:
debug(
"trooper_move_reqs_met() allowing Invasion fleet %d to leave supply "
"because target (%s) has zero max shields or there is a military fleet assigned to secure "
"the target system which will arrive at least 1 turn before the invasion fleet.",
order.fleet.id, invasion_planet)
return True