Python MilitaryAI类代码示例

def calculatePriorities():
    "calculates the priorities of the AI player"
    print("calculating priorities")
    foAI.foAIstate.setPriority(AIPriorityType.PRIORITY_RESOURCE_RESEARCH, calculateResearchPriority())
    ColonisationAI.getColonyFleets() # sets foAI.foAIstate.colonisablePlanetIDs and foAI.foAIstate.outpostPlanetIDs
    InvasionAI.getInvasionFleets() # sets AIstate.invasionFleetIDs, AIstate.opponentPlanetIDs, and AIstate.invasionTargetedPlanetIDs
    MilitaryAI.getMilitaryFleets() # sets AIstate.militaryFleetIDs and AIstate.militaryTargetedSystemIDs

    foAI.foAIstate.setPriority(AIPriorityType.PRIORITY_RESOURCE_PRODUCTION, calculateIndustryPriority())
    foAI.foAIstate.setPriority(AIPriorityType.PRIORITY_RESOURCE_TRADE, 0)
    foAI.foAIstate.setPriority(AIPriorityType.PRIORITY_RESOURCE_CONSTRUCTION, 0)

    foAI.foAIstate.setPriority(AIPriorityType.PRIORITY_PRODUCTION_EXPLORATION, calculateExplorationPriority())
    foAI.foAIstate.setPriority(AIPriorityType.PRIORITY_PRODUCTION_OUTPOST, calculateOutpostPriority())
    foAI.foAIstate.setPriority(AIPriorityType.PRIORITY_PRODUCTION_COLONISATION, calculateColonisationPriority())
    foAI.foAIstate.setPriority(AIPriorityType.PRIORITY_PRODUCTION_INVASION, calculateInvasionPriority())
    foAI.foAIstate.setPriority(AIPriorityType.PRIORITY_PRODUCTION_MILITARY, calculateMilitaryPriority())
    foAI.foAIstate.setPriority(AIPriorityType.PRIORITY_PRODUCTION_BUILDINGS, 25)

    foAI.foAIstate.setPriority(AIPriorityType.PRIORITY_RESEARCH_LEARNING, calculateLearningPriority())
    foAI.foAIstate.setPriority(AIPriorityType.PRIORITY_RESEARCH_GROWTH, calculateGrowthPriority())
    foAI.foAIstate.setPriority(AIPriorityType.PRIORITY_RESEARCH_PRODUCTION, calculateTechsProductionPriority())
    foAI.foAIstate.setPriority(AIPriorityType.PRIORITY_RESEARCH_CONSTRUCTION, calculateConstructionPriority())
    foAI.foAIstate.setPriority(AIPriorityType.PRIORITY_RESEARCH_ECONOMICS, 0)
    foAI.foAIstate.setPriority(AIPriorityType.PRIORITY_RESEARCH_SHIPS, calculateShipsPriority())
    foAI.foAIstate.setPriority(AIPriorityType.PRIORITY_RESEARCH_DEFENSE, 0)

def calculatePriorities():
    "calculates the priorities of the AI player"
    print("checking statuses")
    # Industry, Research, Colony, Invasion, Military
    foAI.foAIstate.setPriority(EnumsAI.AIPriorityType.PRIORITY_RESOURCE_PRODUCTION, 50) # let this one stay fixed & just adjust Research
    foAI.foAIstate.setPriority(EnumsAI.AIPriorityType.PRIORITY_RESOURCE_RESEARCH, calculateResearchPriority())
    ColonisationAI.getColonyFleets() # sets foAI.foAIstate.colonisablePlanetIDs and foAI.foAIstate.outpostPlanetIDs  and many other values used by other modules
    InvasionAI.getInvasionFleets() # sets AIstate.invasionFleetIDs, AIstate.opponentPlanetIDs, and AIstate.invasionTargetedPlanetIDs
    MilitaryAI.getMilitaryFleets() # sets AIstate.militaryFleetIDs and AIstate.militaryTargetedSystemIDs

    print("calculating priorities")
    calculateIndustryPriority()#purely for reporting purposes

    foAI.foAIstate.setPriority(EnumsAI.AIPriorityType.PRIORITY_RESOURCE_TRADE, 0)
    foAI.foAIstate.setPriority(EnumsAI.AIPriorityType.PRIORITY_RESOURCE_CONSTRUCTION, 0)

    foAI.foAIstate.setPriority(EnumsAI.AIPriorityType.PRIORITY_PRODUCTION_EXPLORATION, calculateExplorationPriority())
    foAI.foAIstate.setPriority(EnumsAI.AIPriorityType.PRIORITY_PRODUCTION_OUTPOST, calculateOutpostPriority())
    foAI.foAIstate.setPriority(EnumsAI.AIPriorityType.PRIORITY_PRODUCTION_COLONISATION, calculateColonisationPriority())
    foAI.foAIstate.setPriority(EnumsAI.AIPriorityType.PRIORITY_PRODUCTION_INVASION, calculateInvasionPriority())
    foAI.foAIstate.setPriority(EnumsAI.AIPriorityType.PRIORITY_PRODUCTION_MILITARY, calculateMilitaryPriority())
    foAI.foAIstate.setPriority(EnumsAI.AIPriorityType.PRIORITY_PRODUCTION_BUILDINGS, 25)

    foAI.foAIstate.setPriority(EnumsAI.AIPriorityType.PRIORITY_RESEARCH_LEARNING, calculateLearningPriority())
    foAI.foAIstate.setPriority(EnumsAI.AIPriorityType.PRIORITY_RESEARCH_GROWTH, calculateGrowthPriority())
    foAI.foAIstate.setPriority(EnumsAI.AIPriorityType.PRIORITY_RESEARCH_PRODUCTION, calculateTechsProductionPriority())
    foAI.foAIstate.setPriority(EnumsAI.AIPriorityType.PRIORITY_RESEARCH_CONSTRUCTION, calculateConstructionPriority())
    foAI.foAIstate.setPriority(EnumsAI.AIPriorityType.PRIORITY_RESEARCH_ECONOMICS, 0)
    foAI.foAIstate.setPriority(EnumsAI.AIPriorityType.PRIORITY_RESEARCH_SHIPS, calculateShipsPriority())
    foAI.foAIstate.setPriority(EnumsAI.AIPriorityType.PRIORITY_RESEARCH_DEFENSE, 0)

def generateOrders():
    print ("Genearting Orders")
    universe = fo.getUniverse()
    empire = fo.getEmpire()
    planetID = empire.capitalID
    planet = universe.getPlanet(planetID)
    print "EmpireID:    " + str(empire.empireID) + " Name: " + empire.name + " Turn: " + str(fo.currentTurn())
    print "CapitalID: " + str(planetID) + " Name: " + planet.name + " Species: " + planet.speciesName 

    # turn cleanup
    splitFleet()

    identifyShipDesigns()
    identifyFleetsRoles()
    foAIstate.clean(ExplorationAI.getHomeSystemID(), FleetUtilsAI.getEmpireFleetIDs())
    # ...missions
    # ...demands/priorities

    print("Calling AI Modules")

    # call AI modules
    PriorityAI.calculatePriorities()
    ExplorationAI.assignScoutsToExploreSystems()
    ColonisationAI.assignColonyFleetsToColonise()
    InvasionAI.assignInvasionFleetsToInvade()
    MilitaryAI.assignMilitaryFleetsToSystems()
    FleetUtilsAI.generateAIFleetOrdersForAIFleetMissions()
    FleetUtilsAI.issueAIFleetOrdersForAIFleetMissions()
    ResearchAI.generateResearchOrders()
    ProductionAI.generateProductionOrders()
    ResourcesAI.generateResourcesOrders()    

    foAIstate.afterTurnCleanup()
    fo.doneTurn()

    def _portion_of_fleet_needed_here(self):
        """Calculate the portion of the fleet needed in target system considering enemy forces."""
        # TODO check rating against planets
        if assertion_fails(self.type in COMBAT_MISSION_TYPES, msg=str(self)):
            return 0
        if assertion_fails(self.target and self.target.id != INVALID_ID, msg=str(self)):
            return 0
        system_id = self.target.id
        aistate = get_aistate()
        local_defenses = MilitaryAI.get_my_defense_rating_in_system(system_id)
        potential_threat = CombatRatingsAI.combine_ratings(
            MilitaryAI.get_system_local_threat(system_id),
            MilitaryAI.get_system_neighbor_threat(system_id)
        )
        universe = fo.getUniverse()
        system = universe.getSystem(system_id)

        # tally planetary defenses
        total_defense = total_shields = 0
        for planet_id in system.planetIDs:
            planet = universe.getPlanet(planet_id)
            total_defense += planet.currentMeterValue(fo.meterType.defense)
            total_shields += planet.currentMeterValue(fo.meterType.shield)
        planetary_ratings = total_defense * (total_shields + total_defense)
        potential_threat += planetary_ratings  # TODO: rewrite to return min rating vs planets as well

        # consider safety factor just once here rather than everywhere below
        safety_factor = aistate.character.military_safety_factor()
        potential_threat *= safety_factor

        fleet_rating = CombatRatingsAI.get_fleet_rating(self.fleet.id)
        return CombatRatingsAI.rating_needed(potential_threat, local_defenses) / float(fleet_rating)

def calculate_priorities():
    """calculates the priorities of the AI player"""
    print ("checking statuses")
    # Industry, Research, Colony, Invasion, Military

    prioritiees_timer.start("setting Production Priority")
    foAI.foAIstate.set_priority(
        EnumsAI.AIPriorityType.PRIORITY_RESOURCE_PRODUCTION, 50
    )  # let this one stay fixed & just adjust Research
    prioritiees_timer.start("setting Research Priority")
    foAI.foAIstate.set_priority(
        EnumsAI.AIPriorityType.PRIORITY_RESOURCE_RESEARCH, calculateResearchPriority()
    )  # TODO: do univ _survey before this
    prioritiees_timer.start("Evaluating Colonization Status")

    ColonisationAI.get_colony_fleets()  # sets foAI.foAIstate.colonisablePlanetIDs and foAI.foAIstate.outpostPlanetIDs and many other values used by other modules
    prioritiees_timer.start("Evaluating Invasion Status")
    InvasionAI.get_invasion_fleets()  # sets AIstate.invasionFleetIDs, AIstate.opponentPlanetIDs, and AIstate.invasionTargetedPlanetIDs
    prioritiees_timer.start("Evaluating Military Status")
    MilitaryAI.get_military_fleets()  # sets AIstate.militaryFleetIDs and AIstate.militaryTargetedSystemIDs
    prioritiees_timer.start("reporting Production Priority")
    print ("calculating priorities")
    calculateIndustryPriority()  # purely for reporting purposes
    prioritiees_timer.start("setting Exploration Priority")

    foAI.foAIstate.set_priority(EnumsAI.AIPriorityType.PRIORITY_RESOURCE_TRADE, 0)
    foAI.foAIstate.set_priority(EnumsAI.AIPriorityType.PRIORITY_RESOURCE_CONSTRUCTION, 0)

    foAI.foAIstate.set_priority(EnumsAI.AIPriorityType.PRIORITY_PRODUCTION_EXPLORATION, calculateExplorationPriority())
    prioritiees_timer.start("setting Colony Priority")
    foAI.foAIstate.set_priority(
        EnumsAI.AIPriorityType.PRIORITY_PRODUCTION_COLONISATION, calculateColonisationPriority()
    )
    prioritiees_timer.start("setting Outpost Priority")
    foAI.foAIstate.set_priority(EnumsAI.AIPriorityType.PRIORITY_PRODUCTION_OUTPOST, calculateOutpostPriority())
    prioritiees_timer.start("setting Invasion Priority")
    foAI.foAIstate.set_priority(EnumsAI.AIPriorityType.PRIORITY_PRODUCTION_INVASION, calculateInvasionPriority())
    prioritiees_timer.start("setting Military Priority")
    foAI.foAIstate.set_priority(EnumsAI.AIPriorityType.PRIORITY_PRODUCTION_MILITARY, calculateMilitaryPriority())
    prioritiees_timer.start("setting other priorities")
    foAI.foAIstate.set_priority(EnumsAI.AIPriorityType.PRIORITY_PRODUCTION_BUILDINGS, 25)

    foAI.foAIstate.set_priority(EnumsAI.AIPriorityType.PRIORITY_RESEARCH_LEARNING, calculateLearningPriority())
    foAI.foAIstate.set_priority(EnumsAI.AIPriorityType.PRIORITY_RESEARCH_GROWTH, calculateGrowthPriority())
    foAI.foAIstate.set_priority(EnumsAI.AIPriorityType.PRIORITY_RESEARCH_PRODUCTION, calculateTechsProductionPriority())
    foAI.foAIstate.set_priority(EnumsAI.AIPriorityType.PRIORITY_RESEARCH_CONSTRUCTION, calculateConstructionPriority())
    foAI.foAIstate.set_priority(EnumsAI.AIPriorityType.PRIORITY_RESEARCH_ECONOMICS, 0)
    foAI.foAIstate.set_priority(EnumsAI.AIPriorityType.PRIORITY_RESEARCH_SHIPS, calculateShipsPriority())
    foAI.foAIstate.set_priority(EnumsAI.AIPriorityType.PRIORITY_RESEARCH_DEFENSE, 0)
    prioritiees_timer.end()

def calculate_priorities():
    """Calculates the priorities of the AI player."""
    print "\n", 10 * "=", "Preparing to Calculate Priorities", 10 * "="
    prioritiees_timer.start('setting Production Priority')
    foAI.foAIstate.set_priority(PriorityType.RESOURCE_PRODUCTION, 50)  # let this one stay fixed & just adjust Research

    print "\n*** Calculating Research Priority ***\n"
    prioritiees_timer.start('setting Research Priority')
    foAI.foAIstate.set_priority(PriorityType.RESOURCE_RESEARCH, _calculate_research_priority())  # TODO: do univ _survey before this

    print "\n*** Updating Colonization Status ***\n"
    prioritiees_timer.start('Evaluating Colonization Status')
    ColonisationAI.get_colony_fleets()  # sets foAI.foAIstate.colonisablePlanetIDs and foAI.foAIstate.outpostPlanetIDs and many other values used by other modules

    print "\n*** Updating Invasion Status ***\n"
    prioritiees_timer.start('Evaluating Invasion Status')
    InvasionAI.get_invasion_fleets()  # sets AIstate.invasionFleetIDs, AIstate.opponentPlanetIDs, and AIstate.invasionTargetedPlanetIDs

    print "\n*** Updating Military Status ***\n"
    prioritiees_timer.start('Evaluating Military Status')
    MilitaryAI.get_military_fleets()

    print("\n** Calculating Production Priorities ***\n")
    prioritiees_timer.start('reporting Production Priority')
    _calculate_industry_priority()  # purely for reporting purposes
    prioritiees_timer.start('setting Exploration Priority')

    foAI.foAIstate.set_priority(PriorityType.RESOURCE_TRADE, 0)
    foAI.foAIstate.set_priority(PriorityType.RESOURCE_CONSTRUCTION, 0)

    foAI.foAIstate.set_priority(PriorityType.PRODUCTION_EXPLORATION, _calculate_exploration_priority())
    prioritiees_timer.start('setting Colony Priority')
    foAI.foAIstate.set_priority(PriorityType.PRODUCTION_COLONISATION, _calculate_colonisation_priority())
    prioritiees_timer.start('setting Outpost Priority')
    foAI.foAIstate.set_priority(PriorityType.PRODUCTION_OUTPOST, _calculate_outpost_priority())
    prioritiees_timer.start('setting Invasion Priority')
    foAI.foAIstate.set_priority(PriorityType.PRODUCTION_INVASION, _calculate_invasion_priority())
    prioritiees_timer.start('setting Military Priority')
    foAI.foAIstate.set_priority(PriorityType.PRODUCTION_MILITARY, _calculate_military_priority())
    prioritiees_timer.start('setting other priorities')
    foAI.foAIstate.set_priority(PriorityType.PRODUCTION_BUILDINGS, 25)

    foAI.foAIstate.set_priority(PriorityType.RESEARCH_LEARNING, _calculate_learning_priority())
    foAI.foAIstate.set_priority(PriorityType.RESEARCH_GROWTH, _calculate_growth_priority())
    foAI.foAIstate.set_priority(PriorityType.RESEARCH_PRODUCTION, _calculate_techs_production_priority())
    foAI.foAIstate.set_priority(PriorityType.RESEARCH_CONSTRUCTION, _calculate_construction_priority())
    foAI.foAIstate.set_priority(PriorityType.RESEARCH_ECONOMICS, 0)
    foAI.foAIstate.set_priority(PriorityType.RESEARCH_SHIPS, _calculate_ships_priority())
    foAI.foAIstate.set_priority(PriorityType.RESEARCH_DEFENSE, 0)
    prioritiees_timer.stop_print_and_clear()

def trooper_move_reqs_met(main_fleet_mission, order, verbose):
    """
    Indicates whether or not move requirements specific to invasion troopers are met for the provided mission and order.
    :type main_fleet_mission: AIFleetMission.AIFleetMission
    :type order: OrderMove
    :param verbose: whether to print verbose decision details
    :type verbose: bool
    :rtype: bool
    """
    # 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_target = main_fleet_mission.target
    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:
                    print ("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:
                    print ("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:
            print ("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

def _calculate_exploration_priority():
    """Calculates the demand for scouts by unexplored systems."""
    empire = fo.getEmpire()
    num_unexplored_systems = len(ExplorationAI.borderUnexploredSystemIDs)
    num_scouts = sum([foAI.foAIstate.fleetStatus.get(fid, {}).get('nships', 0) for fid in FleetUtilsAI.get_empire_fleet_ids_by_role(
        MissionType.EXPLORATION)])
    production_queue = empire.productionQueue
    queued_scout_ships = 0
    for queue_index in range(0, len(production_queue)):
        element = production_queue[queue_index]
        if element.buildType == EmpireProductionTypes.BT_SHIP:
            if foAI.foAIstate.get_ship_role(element.designID) == ShipRoleType.CIVILIAN_EXPLORATION:
                queued_scout_ships += element.remaining * element.blocksize

    mil_ships = MilitaryAI.get_num_military_ships()
    # intent of the following calc is essentially
    # new_scouts_needed = min(need_cap_A, need_cap_B, base_need) - already_got_or_queued
    # where need_cap_A is to help prevent scouting needs from swamping military needs, and
    # need_cap_B is to help regulate investment into scouting while the empire is small.
    # These caps could perhaps instead be tied more directly to military priority and
    # total empire production.
    desired_number_of_scouts = int(min(4 + mil_ships/5, 4 + fo.currentTurn()/50.0, 2 + num_unexplored_systems**0.5))
    scouts_needed = max(0, desired_number_of_scouts - (num_scouts + queued_scout_ships))
    exploration_priority = int(40 * scouts_needed)

    print
    print "Number of Scouts: %s" % num_scouts
    print "Number of Unexplored systems: %s" % num_unexplored_systems
    print "Military size: %s" % mil_ships
    print "Priority for scouts: %s" % exploration_priority

    return exploration_priority

    def can_issue_order(self, verbose=False):
        if not super(OrderMove, self).can_issue_order(verbose=verbose):
            return False
        # TODO: figure out better way to have invasions (& possibly colonizations) require visibility on target without needing visibility of all intermediate systems
        # if False and main_mission_type not in [AIFleetMissionType.FLEET_MISSION_ATTACK,  # TODO: consider this later
        #                                      AIFleetMissionType.FLEET_MISSION_MILITARY,
        #                                      AIFleetMissionType.FLEET_MISSION_SECURE,
        #                                      AIFleetMissionType.FLEET_MISSION_HIT_AND_RUN,
        #                                      AIFleetMissionType.FLEET_MISSION_EXPLORATION]:
        #     if not universe.getVisibility(target_id, foAI.foAIstate.empireID) >= fo.visibility.partial:
        #         #if not target_id in interior systems
        #         foAI.foAIstate.needsEmergencyExploration.append(fleet.systemID)
        #         return False
        system_id = self.fleet.get_system().id
        if system_id == self.target.get_system().id:
            return True  # TODO: already there, but could consider retreating

        fleet_rating = foAI.foAIstate.get_rating(self.fleet.id).get('overall', 0)
        target_sys_status = foAI.foAIstate.systemStatus.get(self.target.id, {})
        f_threat = target_sys_status.get('fleetThreat', 0)
        m_threat = target_sys_status.get('monsterThreat', 0)
        p_threat = target_sys_status.get('planetThreat', 0)
        threat = f_threat + m_threat + p_threat
        safety_factor = MilitaryAI.get_safety_factor()
        universe = fo.getUniverse()
        if fleet_rating >= safety_factor * threat:
            return True
        elif not p_threat and self.target.id in fo.getEmpire().supplyUnobstructedSystems:
                    return True
        else:
            sys1 = universe.getSystem(system_id)
            sys1_name = sys1 and sys1.name or "unknown"
            targ1 = self.target.get_system()
            targ1_name = (targ1 and targ1.get_object().name) or "unknown"
            # following line was poor because AIstate.militaryFleetIDs only covers fleets without current missions
            # my_other_fleet_rating = sum([foAI.foAIstate.fleetStatus.get(fleet_id, {}).get('rating', 0) for fleet_id in foAI.foAIstate.militaryFleetIDs if ( foAI.foAIstate.fleetStatus.get(fleet_id, {}).get('sysID', -1) == thisSystemID ) ])
            # myOtherFleetsRatings = [foAI.foAIstate.fleetStatus.get(fid, {}).get('rating', {}) for fid in foAI.foAIstate.systemStatus.get(target_id, {}).get('myfleets', [])]
            # my_other_fleet_rating = sum([foAI.foAIstate.fleetStatus.get(fid, {}).get('rating', 0) for fid in foAI.foAIstate.systemStatus.get( target_id, {}).get('myfleets', []) ])
            my_other_fleet_rating = foAI.foAIstate.systemStatus.get(self.target.id, {}).get('myFleetRating', 0)  # TODO: adjust calc for any departing fleets
            is_military = foAI.foAIstate.get_fleet_role(self.fleet.id) == AIFleetMissionType.FLEET_MISSION_MILITARY
            if ((my_other_fleet_rating > 3 * safety_factor * threat) or
                        (is_military and my_other_fleet_rating + fleet_rating > safety_factor * threat) or
                        (is_military and my_other_fleet_rating + fleet_rating > 0.8 * safety_factor * threat and fleet_rating > 0.2 * threat)):
                if verbose:
                    print "\tAdvancing fleet %d (rating %d) at system %d (%s) into system %d (%s) with threat %d because of sufficient empire fleet strength already at destination" % (
                        self.fleet.id, fleet_rating, system_id, sys1_name, self.target.id, targ1_name, threat)
                return True
            elif threat == p_threat and not self.fleet.get_object().aggressive and not my_other_fleet_rating and not target_sys_status.get('localEnemyFleetIDs', [-1]):
                if verbose:
                    print ("\tAdvancing fleet %d (rating %d) at system %d (%s) into system %d (%s) with planet threat %d because nonaggressive" +
                           " and no other fleets present to trigger combat") % (self.fleet.id, fleet_rating, system_id, sys1_name, self.target.id, targ1_name, threat)
                return True
            else:
                if verbose:
                    print "\tHolding fleet %d (rating %d) at system %d (%s) before travelling to system %d (%s) with threat %d" % (self.fleet.id, fleet_rating, system_id, sys1_name, self.target.id, targ1_name, threat)
                needs_vis = foAI.foAIstate.misc.setdefault('needs_vis', [])
                if self.target.id not in needs_vis:
                    needs_vis.append(self.target.id)
                return False
        return True

    def get_fleet_role(self, fleet_id, force_new=False):
        """Returns fleet role by ID."""

        if not force_new and fleet_id in self.__fleetRoleByID:
            return self.__fleetRoleByID[fleet_id]
        else:
            role = FleetUtilsAI.assess_fleet_role(fleet_id)
            self.__fleetRoleByID[fleet_id] = role
            make_aggressive = False
            if role in [MissionType.COLONISATION,
                        MissionType.OUTPOST,
                        MissionType.ORBITAL_INVASION,
                        MissionType.ORBITAL_OUTPOST
                        ]:
                pass
            elif role in [MissionType.EXPLORATION,
                          MissionType.INVASION
                          ]:
                this_rating = self.get_rating(fleet_id)  # Done!
                n_ships = self.fleetStatus.get(fleet_id, {}).get('nships', 1)  # entry sould exist due to above line
                if float(this_rating) / n_ships >= 0.5 * MilitaryAI.cur_best_mil_ship_rating():
                    make_aggressive = True
            else:
                make_aggressive = True
            fo.issueAggressionOrder(fleet_id, make_aggressive)
            return role

    def _need_repair(self, repair_limit=0.70):
        """Check if fleet needs to be repaired.

         If the fleet is already at a system where it can be repaired, stay there until fully repaired.
         Otherwise, repair if fleet health is below specified *repair_limit*.
         For military fleets, there is a special evaluation called, cf. *MilitaryAI.avail_mil_needing_repair()*

         :param repair_limit: percentage of health below which the fleet is sent to repair
         :type repair_limit: float
         :return: True if fleet needs repair
         :rtype: bool
        """
        # TODO: More complex evaluation if fleet needs repair (consider self-repair, distance, threat, mission...)
        fleet_id = self.fleet.id
        # if we are already at a system where we can repair, make sure we use it...
        system = self.fleet.get_system()
        # TODO starlane obstruction is not considered in the next call
        nearest_dock = MoveUtilsAI.get_best_drydock_system_id(system.id, fleet_id)
        if nearest_dock == system.id:
            repair_limit = 0.99
        # if combat fleet, use military repair check
        if get_aistate().get_fleet_role(fleet_id) in COMBAT_MISSION_TYPES:
            return fleet_id in MilitaryAI.avail_mil_needing_repair([fleet_id], on_mission=bool(self.orders),
                                                                   repair_limit=repair_limit)[0]
        # TODO: Allow to split fleet to send only damaged ships to repair
        ships_cur_health, ships_max_health = FleetUtilsAI.get_current_and_max_structure(fleet_id)
        return ships_cur_health < repair_limit * ships_max_health

    def check_mergers(self, context=""):
        """
        Merge local fleets with same mission into this fleet.

        :param context: Context of the function call for logging purposes
        :type context: str
        """
        debug("Considering to merge %s", self.__str__())
        if self.type not in MERGEABLE_MISSION_TYPES:
            debug("Mission type does not allow merging.")
            return

        if not self.target:
            debug("Mission has no valid target - do not merge.")
            return

        universe = fo.getUniverse()
        empire_id = fo.empireID()

        fleet_id = self.fleet.id
        main_fleet = universe.getFleet(fleet_id)
        main_fleet_system_id = main_fleet.systemID
        if main_fleet_system_id == INVALID_ID:
            debug("Can't merge: fleet in middle of starlane.")
            return

        # only merge PROTECT_REGION if there is any threat near target
        if self.type == MissionType.PROTECT_REGION:
            neighbor_systems = universe.getImmediateNeighbors(self.target.id, empire_id)
            if not any(MilitaryAI.get_system_local_threat(sys_id)
                       for sys_id in neighbor_systems):
                debug("Not merging PROTECT_REGION fleet - no threat nearby.")
                return

        destroyed_list = set(universe.destroyedObjectIDs(empire_id))
        aistate = get_aistate()
        system_status = aistate.systemStatus[main_fleet_system_id]
        other_fleets_here = [fid for fid in system_status.get('myFleetsAccessible', []) if fid != fleet_id and
                             fid not in destroyed_list and universe.getFleet(fid).ownedBy(empire_id)]
        if not other_fleets_here:
            debug("No other fleets here")
            return

        for fid in other_fleets_here:
            fleet_mission = aistate.get_fleet_mission(fid)
            if fleet_mission.type != self.type or fleet_mission.target != self.target:
                debug("Local candidate %s does not have same mission." % fleet_mission)
                continue
            FleetUtilsAI.merge_fleet_a_into_b(fid, fleet_id, context="Order %s of mission %s" % (context, self))

    def _need_repair(self):
        """
        Check if fleet need repair. Check if fleet HP is less of cutoff.
        TODO make more clever implementation.
        """
        repair_limit = 0.70

        universe = fo.getUniverse()
        fleet_id = self.fleet.id
        # if combat fleet, use military repair check
        if foAI.foAIstate.get_fleet_role(fleet_id) in COMBAT_MISSION_TYPES:
            return fleet_id in MilitaryAI.avail_mil_needing_repair([fleet_id], False, bool(self.orders))[0]
        fleet = universe.getFleet(fleet_id)
        ships_cur_health = 0
        ships_max_health = 0

        for ship_id in fleet.shipIDs:
            this_ship = universe.getShip(ship_id)
            ships_cur_health += this_ship.currentMeterValue(fo.meterType.structure)
            ships_max_health += this_ship.currentMeterValue(fo.meterType.maxStructure)
        return ships_cur_health < repair_limit * ships_max_health

    def issue_fleet_orders(self):
        """issues AIFleetOrders which can be issued in system and moves to next one if is possible"""
        # TODO: priority
        order_completed = True
        print
        print "Checking orders for fleet %s (on turn %d), with mission type %s" % (
            self.fleet.get_object(), fo.currentTurn(), self.type or 'No mission')
        if MissionType.INVASION == self.type:
            self._check_retarget_invasion()
        just_issued_move_order = False
        last_move_target_id = INVALID_ID
        # Note: the following abort check somewhat assumes only one major mission type
        for fleet_order in self.orders:
            if (isinstance(fleet_order, (OrderColonize, OrderOutpost, OrderInvade)) and
                    self._check_abort_mission(fleet_order)):
                return
        for fleet_order in self.orders:
            if just_issued_move_order and self.fleet.get_object().systemID != last_move_target_id:
                # having just issued a move order, we will normally stop issuing orders this turn, except that if there
                # are consecutive move orders we will consider moving through the first destination rather than stopping
                # Without the below noinspection directive, PyCharm is concerned about the 2nd part of the test
                # noinspection PyTypeChecker
                if (not isinstance(fleet_order, OrderMove) or
                        self.need_to_pause_movement(last_move_target_id, fleet_order)):
                    break
            print "Checking order: %s" % fleet_order
            self.check_mergers(context=str(fleet_order))
            if fleet_order.can_issue_order(verbose=False):
                if isinstance(fleet_order, OrderMove) and order_completed:  # only move if all other orders completed
                    print "Issuing fleet order %s" % fleet_order
                    fleet_order.issue_order()
                    just_issued_move_order = True
                    last_move_target_id = fleet_order.target.id
                elif not isinstance(fleet_order, OrderMove):
                    print "Issuing fleet order %s" % fleet_order
                    fleet_order.issue_order()
                else:
                    print "NOT issuing (even though can_issue) fleet order %s" % fleet_order
                print "Order issued: %s" % fleet_order.order_issued
                if not fleet_order.executed:
                    order_completed = False
            else:  # check that we're not held up by a Big Monster
                if fleet_order.order_issued:
                    # A previously issued order that wasn't instantly executed must have had cirumstances change so that
                    # the order can't currently be reissued (or perhaps simply a savegame has been reloaded on the same
                    # turn the order was issued).
                    if not fleet_order.executed:
                        order_completed = False
                    # Go on to the next order.
                    continue
                print "CAN'T issue fleet order %s" % fleet_order
                if isinstance(fleet_order, OrderMove):
                    this_system_id = fleet_order.target.id
                    this_status = foAI.foAIstate.systemStatus.setdefault(this_system_id, {})
                    threat_threshold = fo.currentTurn() * MilitaryAI.cur_best_mil_ship_rating() / 4.0
                    if this_status.get('monsterThreat', 0) > threat_threshold:
                        # if this move order is not this mil fleet's final destination, and blocked by Big Monster,
                        # release and hope for more effective reassignment
                        if (self.type not in (MissionType.MILITARY, MissionType.SECURE) or
                                fleet_order != self.orders[-1]):
                            print "Aborting mission due to being blocked by Big Monster at system %d, threat %d" % (
                                this_system_id, foAI.foAIstate.systemStatus[this_system_id]['monsterThreat'])
                            print "Full set of orders were:"
                            for this_order in self.orders:
                                print " - %s" % this_order
                            self.clear_fleet_orders()
                            self.clear_target()
                            return
                break  # do not order the next order until this one is finished.
        else:  # went through entire order list
            if order_completed:
                print "Final order is completed"
                orders = self.orders
                last_order = orders[-1] if orders else None
                universe = fo.getUniverse()

                if last_order and isinstance(last_order, OrderColonize):
                    planet = universe.getPlanet(last_order.target.id)
                    sys_partial_vis_turn = get_partial_visibility_turn(planet.systemID)
                    planet_partial_vis_turn = get_partial_visibility_turn(planet.id)
                    if (planet_partial_vis_turn == sys_partial_vis_turn and
                            not planet.initialMeterValue(fo.meterType.population)):
                        warn("Fleet %d has tentatively completed its "
                             "colonize mission but will wait to confirm population." % self.fleet.id)
                        print "    Order details are %s" % last_order
                        print "    Order is valid: %s; issued: %s; executed: %s" % (
                            last_order.is_valid(), last_order.order_issued, last_order.executed)
                        if not last_order.is_valid():
                            source_target = last_order.fleet
                            target_target = last_order.target
                            print "        source target validity: %s; target target validity: %s " % (
                                bool(source_target), bool(target_target))
                        return  # colonize order must not have completed yet
                clear_all = True
                last_sys_target = INVALID_ID
                if last_order and isinstance(last_order, OrderMilitary):
                    last_sys_target = last_order.target.id
                    # not doing this until decide a way to release from a SECURE mission
                    # if (MissionType.SECURE == self.type) or
                    secure_targets = set(AIstate.colonyTargetedSystemIDs +
#.........这里部分代码省略.........

    def issue_fleet_orders(self):
        """issues AIFleetOrders which can be issued in system and moves to next one if is possible"""
        # TODO: priority
        order_completed = True
        print
        print "Checking orders for fleet %s (on turn %d), with mission type %s" % (self.fleet.get_object(), fo.currentTurn(), self.type or 'No mission')
        if MissionType.INVASION == self.type:
            self._check_retarget_invasion()
        for fleet_order in self.orders:
            print "Checking order: %s" % fleet_order
            if isinstance(fleet_order, (OrderColonize, OrderOutpost, OrderInvade)):  # TODO: invasion?
                if self._check_abort_mission(fleet_order):
                    print "Aborting fleet order %s" % fleet_order
                    return
            self.check_mergers(context=str(fleet_order))
            if fleet_order.can_issue_order(verbose=False):
                if isinstance(fleet_order, OrderMove) and order_completed:  # only move if all other orders completed
                    print "Issuing fleet order %s" % fleet_order
                    fleet_order.issue_order()
                elif not isinstance(fleet_order, OrderMove):
                    print "Issuing fleet order %s" % fleet_order
                    fleet_order.issue_order()
                else:
                    print "NOT issuing (even though can_issue) fleet order %s" % fleet_order
                print "Order issued: %s" % fleet_order.order_issued
                if not fleet_order.order_issued:
                    order_completed = False
            else:  # check that we're not held up by a Big Monster
                if fleet_order.order_issued:
                    # It's unclear why we'd really get to this spot, but it has been observed to happen, perhaps due to
                    # game being reloaded after code changes.
                    # Go on to the next order.
                    continue
                print "CAN'T issue fleet order %s" % fleet_order
                if isinstance(fleet_order, OrderMove):
                    this_system_id = fleet_order.target.id
                    this_status = foAI.foAIstate.systemStatus.setdefault(this_system_id, {})
                    if this_status.get('monsterThreat', 0) > fo.currentTurn() * MilitaryAI.cur_best_mil_ship_rating() / 4.0:
                        if (self.type not in (MissionType.MILITARY,
                                              MissionType.SECURE) or
                            fleet_order != self.orders[-1]  # if this move order is not this mil fleet's final destination, and blocked by Big Monster, release and hope for more effective reassignment
                            ):
                            print "Aborting mission due to being blocked by Big Monster at system %d, threat %d" % (this_system_id, foAI.foAIstate.systemStatus[this_system_id]['monsterThreat'])
                            print "Full set of orders were:"
                            for this_order in self.orders:
                                print " - %s" % this_order
                            self.clear_fleet_orders()
                            self.clear_target()
                            return
            # moving to another system stops issuing all orders in system where fleet is
            # move order is also the last order in system
            if isinstance(fleet_order, OrderMove):
                fleet = self.fleet.get_object()
                if fleet.systemID != fleet_order.target.id:
                    break
        else:  # went through entire order list
            if order_completed:
                print "Final order is completed"
                orders = self.orders
                last_order = orders[-1] if orders else None
                universe = fo.getUniverse()

                if last_order and isinstance(last_order, OrderColonize):
                    planet = universe.getPlanet(last_order.target.id)
                    sys_partial_vis_turn = universe.getVisibilityTurnsMap(planet.systemID, fo.empireID()).get(fo.visibility.partial, -9999)
                    planet_partial_vis_turn = universe.getVisibilityTurnsMap(planet.id, fo.empireID()).get(fo.visibility.partial, -9999)
                    if planet_partial_vis_turn == sys_partial_vis_turn and not planet.currentMeterValue(fo.meterType.population):
                        print "Potential Error: Fleet %d has tentatively completed its colonize mission but will wait to confirm population." % self.fleet.id
                        print "    Order details are %s" % last_order
                        print "    Order is valid: %s; issued: %s; executed: %s" % (last_order.is_valid(), last_order.order_issued, last_order.executed)
                        if not last_order.is_valid():
                            source_target = last_order.fleet
                            target_target = last_order.target
                            print "        source target validity: %s; target target validity: %s " % (bool(source_target), bool(target_target))
                        return  # colonize order must not have completed yet
                clear_all = True
                last_sys_target = -1
                if last_order and isinstance(last_order, OrderMilitary):
                    last_sys_target = last_order.target.id
                    # if (MissionType.SECURE == self.type) or # not doing this until decide a way to release from a SECURE mission
                    secure_targets = set(AIstate.colonyTargetedSystemIDs + AIstate.outpostTargetedSystemIDs + AIstate.invasionTargetedSystemIDs + AIstate.blockadeTargetedSystemIDs)
                    if last_sys_target in secure_targets:  # consider a secure mission
                        if last_sys_target in AIstate.colonyTargetedSystemIDs:
                            secure_type = "Colony"
                        elif last_sys_target in AIstate.outpostTargetedSystemIDs:
                            secure_type = "Outpost"
                        elif last_sys_target in AIstate.invasionTargetedSystemIDs:
                            secure_type = "Invasion"
                        elif last_sys_target in AIstate.blockadeTargetedSystemIDs:
                            secure_type = "Blockade"
                        else:
                            secure_type = "Unidentified"
                        print "Fleet %d has completed initial stage of its mission to secure system %d (targeted for %s), may release a portion of ships" % (self.fleet.id, last_sys_target, secure_type)
                        clear_all = False
                fleet_id = self.fleet.id
                if clear_all:
                    if orders:
                        print "Fleet %d has completed its mission; clearing all orders and targets." % self.fleet.id
                        print "Full set of orders were:"
                        for this_order in orders:
#.........这里部分代码省略.........