def evaluate_invasion_planet(planet_id, secure_fleet_missions, verbose=True):
"""Return the invasion value (score, troops) of a planet."""
universe = fo.getUniverse()
empire_id = fo.empireID()
detail = []
planet = universe.getPlanet(planet_id)
if planet is None:
print "Invasion AI couldn't access any info for planet id %d" % planet_id
return [0, 0]
system_id = planet.systemID
# by using the following instead of simply relying on stealth meter reading, can (sometimes) plan ahead even if
# planet is temporarily shrouded by an ion storm
predicted_detectable = EspionageAI.colony_detectable_by_empire(
planet_id, empire_id=fo.empireID(), default_result=False)
if not predicted_detectable:
if get_partial_visibility_turn(planet_id) < fo.currentTurn():
debug("InvasionAI predicts planet id %d to be stealthed" %
planet_id)
return [0, 0]
else:
debug(
"InvasionAI predicts planet id %d to be stealthed" %
planet_id +
", but somehow have current visibity anyway, will still consider as target"
)
# Check if the target planet was extra-stealthed somehow its system was last viewed
# this test below may augment the tests above, but can be thrown off by temporary combat-related sighting
system_last_seen = get_partial_visibility_turn(planet_id)
planet_last_seen = get_partial_visibility_turn(system_id)
if planet_last_seen < system_last_seen:
# TODO: track detection strength, order new scouting when it goes up
debug(
"Invasion AI considering planet id %d (stealthed at last view), still proceeding."
% planet_id)
# get a baseline evaluation of the planet as determined by ColonisationAI
species_name = planet.speciesName
species = fo.getSpecies(species_name)
if not species or AIDependencies.TAG_DESTROYED_ON_CONQUEST in species.tags:
# this call iterates over this Empire's available species with which it could colonize after an invasion
planet_eval = ColonisationAI.assign_colonisation_values(
[planet_id], MissionType.INVASION, None, detail)
colony_base_value = max(
0.75 * planet_eval.get(planet_id, [0])[0],
ColonisationAI.evaluate_planet(planet_id, MissionType.OUTPOST,
None, detail))
else:
colony_base_value = ColonisationAI.evaluate_planet(
planet_id, MissionType.INVASION, species_name, detail)
# Add extra score for all buildings on the planet
building_values = {
"BLD_IMPERIAL_PALACE": 1000,
"BLD_CULTURE_ARCHIVES": 1000,
"BLD_AUTO_HISTORY_ANALYSER": 100,
"BLD_SHIPYARD_BASE": 100,
"BLD_SHIPYARD_ORG_ORB_INC": 200,
"BLD_SHIPYARD_ORG_XENO_FAC": 200,
"BLD_SHIPYARD_ORG_CELL_GRO_CHAMB": 200,
"BLD_SHIPYARD_CON_NANOROBO": 300,
"BLD_SHIPYARD_CON_GEOINT": 400,
"BLD_SHIPYARD_CON_ADV_ENGINE": 1000,
"BLD_SHIPYARD_AST": 300,
"BLD_SHIPYARD_AST_REF": 1000,
"BLD_SHIPYARD_ENRG_SOLAR": 1500,
"BLD_INDUSTRY_CENTER": 500,
"BLD_GAS_GIANT_GEN": 200,
"BLD_SOL_ORB_GEN": 800,
"BLD_BLACK_HOLE_POW_GEN": 2000,
"BLD_ENCLAVE_VOID": 500,
"BLD_NEUTRONIUM_EXTRACTOR": 2000,
"BLD_NEUTRONIUM_SYNTH": 2000,
"BLD_NEUTRONIUM_FORGE": 1000,
"BLD_CONC_CAMP": 100,
"BLD_BIOTERROR_PROJECTOR": 1000,
"BLD_SHIPYARD_ENRG_COMP": 3000,
}
bld_tally = 0
for bldType in [
universe.getBuilding(bldg).buildingTypeName
for bldg in planet.buildingIDs
]:
bval = building_values.get(bldType, 50)
bld_tally += bval
detail.append("%s: %d" % (bldType, bval))
# Add extra score for unlocked techs when we conquer the species
tech_tally = 0
value_per_pp = 4
for unlocked_tech in AIDependencies.SPECIES_TECH_UNLOCKS.get(
species_name, []):
if not tech_is_complete(unlocked_tech):
rp_cost = fo.getTech(unlocked_tech).researchCost(empire_id)
tech_value = value_per_pp * rp_cost
tech_tally += tech_value
detail.append("%s: %d" % (unlocked_tech, tech_value))
max_jumps = 8
capitol_id = PlanetUtilsAI.get_capital()
least_jumps_path = []
clear_path = True
if capitol_id:
homeworld = universe.getPlanet(capitol_id)
if homeworld and homeworld.systemID != INVALID_ID and system_id != INVALID_ID:
least_jumps_path = list(
universe.leastJumpsPath(homeworld.systemID, system_id,
empire_id))
max_jumps = len(least_jumps_path)
system_status = foAI.foAIstate.systemStatus.get(system_id, {})
system_fleet_treat = system_status.get('fleetThreat', 1000)
system_monster_threat = system_status.get('monsterThreat', 0)
sys_total_threat = system_fleet_treat + system_monster_threat + system_status.get(
'planetThreat', 0)
max_path_threat = system_fleet_treat
mil_ship_rating = MilitaryAI.cur_best_mil_ship_rating()
for path_sys_id in least_jumps_path:
path_leg_status = foAI.foAIstate.systemStatus.get(path_sys_id, {})
path_leg_threat = path_leg_status.get(
'fleetThreat', 1000) + path_leg_status.get('monsterThreat', 0)
if path_leg_threat > 0.5 * mil_ship_rating:
clear_path = False
if path_leg_threat > max_path_threat:
max_path_threat = path_leg_threat
pop = planet.currentMeterValue(fo.meterType.population)
target_pop = planet.currentMeterValue(fo.meterType.targetPopulation)
troops = planet.currentMeterValue(fo.meterType.troops)
troop_regen = planet.currentMeterValue(
fo.meterType.troops) - planet.initialMeterValue(fo.meterType.troops)
max_troops = planet.currentMeterValue(fo.meterType.maxTroops)
# TODO: refactor troop determination into function for use in mid-mission updates and also consider defender techs
max_troops += AIDependencies.TROOPS_PER_POP * (target_pop - pop)
this_system = universe.getSystem(system_id)
secure_targets = [system_id] + list(this_system.planetIDs)
system_secured = False
for mission in secure_fleet_missions:
if system_secured:
break
secure_fleet_id = mission.fleet.id
s_fleet = universe.getFleet(secure_fleet_id)
if not s_fleet or s_fleet.systemID != system_id:
continue
if mission.type == MissionType.SECURE:
target_obj = mission.target.get_object()
if target_obj is not None and target_obj.id in secure_targets:
system_secured = True
break
system_secured = system_secured and system_status.get('myFleetRating', 0)
if verbose:
print("Invasion eval of %s\n"
" - maxShields: %.1f\n"
" - sysFleetThreat: %.1f\n"
" - sysMonsterThreat: %.1f") % (
planet, planet.currentMeterValue(fo.meterType.maxShield),
system_fleet_treat, system_monster_threat)
enemy_val = 0
if planet.owner != -1: # value in taking this away from an enemy
enemy_val = 20 * (
planet.currentMeterValue(fo.meterType.targetIndustry) +
2 * planet.currentMeterValue(fo.meterType.targetResearch))
# devalue invasions that would require too much military force
preferred_max_portion = MilitaryAI.get_preferred_max_military_portion_for_single_battle(
)
total_max_mil_rating = MilitaryAI.get_concentrated_tot_mil_rating()
threat_exponent = 2 # TODO: make this a character trait; higher aggression with a lower exponent
threat_factor = min(
1, preferred_max_portion * total_max_mil_rating /
(sys_total_threat + 0.001))**threat_exponent
design_id, _, locs = ProductionAI.get_best_ship_info(
PriorityType.PRODUCTION_INVASION)
if not locs or not universe.getPlanet(locs[0]):
# We are in trouble anyway, so just calculate whatever approximation...
build_time = 4
planned_troops = troops if system_secured else min(
troops + troop_regen * (max_jumps + build_time), max_troops)
planned_troops += .01 # we must attack with more troops than there are defenders
troop_cost = math.ceil((planned_troops + _TROOPS_SAFETY_MARGIN) /
6.0) * 20 * FleetUtilsAI.get_fleet_upkeep()
else:
loc = locs[0]
species_here = universe.getPlanet(loc).speciesName
design = fo.getShipDesign(design_id)
cost_per_ship = design.productionCost(empire_id, loc)
build_time = design.productionTime(empire_id, loc)
troops_per_ship = CombatRatingsAI.weight_attack_troops(
design.troopCapacity,
CombatRatingsAI.get_species_troops_grade(species_here))
planned_troops = troops if system_secured else min(
troops + troop_regen * (max_jumps + build_time), max_troops)
planned_troops += .01 # we must attack with more troops than there are defenders
ships_needed = math.ceil(
(planned_troops + _TROOPS_SAFETY_MARGIN) / float(troops_per_ship))
troop_cost = ships_needed * cost_per_ship # fleet upkeep is already included in query from server
# apply some bias to expensive operations
normalized_cost = float(troop_cost) / max(fo.getEmpire().productionPoints,
1)
normalized_cost = max(1., normalized_cost)
cost_score = (normalized_cost**2 / 50.0) * troop_cost
base_score = colony_base_value + bld_tally + tech_tally + enemy_val - cost_score
# If the AI does have enough total miltary to attack this target, and the target is more than minimally valuable,
# don't let the threat_factor discount the adjusted value below MIN_INVASION_SCORE +1, so that if there are no
# other targets the AI could still pursue this one. Otherwise, scoring pressure from
# MilitaryAI.get_preferred_max_military_portion_for_single_battle might prevent the AI from attacking heavily
# defended but still defeatable targets even if it has no softer targets available.
if total_max_mil_rating > sys_total_threat and base_score > 2 * MIN_INVASION_SCORE:
threat_factor = max(threat_factor,
(MIN_INVASION_SCORE + 1) / base_score)
planet_score = retaliation_risk_factor(planet.owner) * threat_factor * max(
0, base_score)
if clear_path:
planet_score *= 1.5
if verbose:
print(' - planet score: %.2f\n'
' - planned troops: %.2f\n'
' - projected troop cost: %.1f\n'
' - threat factor: %s\n'
' - planet detail: %s\n'
' - popval: %.1f\n'
' - bldval: %s\n'
' - enemyval: %s') % (planet_score, planned_troops, troop_cost,
threat_factor, detail, colony_base_value,
bld_tally, enemy_val)
return [planet_score, planned_troops]
def evaluate_invasion_planet(planet_id, secure_fleet_missions, verbose=True):
"""Return the invasion value (score, troops) of a planet."""
detail = []
building_values = {"BLD_IMPERIAL_PALACE": 1000,
"BLD_CULTURE_ARCHIVES": 1000,
"BLD_AUTO_HISTORY_ANALYSER": 100,
"BLD_SHIPYARD_BASE": 100,
"BLD_SHIPYARD_ORG_ORB_INC": 200,
"BLD_SHIPYARD_ORG_XENO_FAC": 200,
"BLD_SHIPYARD_ORG_CELL_GRO_CHAMB": 200,
"BLD_SHIPYARD_CON_NANOROBO": 300,
"BLD_SHIPYARD_CON_GEOINT": 400,
"BLD_SHIPYARD_CON_ADV_ENGINE": 1000,
"BLD_SHIPYARD_AST": 300,
"BLD_SHIPYARD_AST_REF": 1000,
"BLD_SHIPYARD_ENRG_SOLAR": 1500,
"BLD_INDUSTRY_CENTER": 500,
"BLD_GAS_GIANT_GEN": 200,
"BLD_SOL_ORB_GEN": 800,
"BLD_BLACK_HOLE_POW_GEN": 2000,
"BLD_ENCLAVE_VOID": 500,
"BLD_NEUTRONIUM_EXTRACTOR": 2000,
"BLD_NEUTRONIUM_SYNTH": 2000,
"BLD_NEUTRONIUM_FORGE": 1000,
"BLD_CONC_CAMP": 100,
"BLD_BIOTERROR_PROJECTOR": 1000,
"BLD_SHIPYARD_ENRG_COMP": 3000,
}
# TODO: add more factors, as used for colonization
universe = fo.getUniverse()
empire_id = fo.empireID()
max_jumps = 8
planet = universe.getPlanet(planet_id)
if planet is None: # TODO: exclude planets with stealth higher than empireDetection
print "invasion AI couldn't access any info for planet id %d" % planet_id
return [0, 0]
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:
print "invasion AI couldn't get current info on planet id %d (was stealthed at last sighting)" % planet_id
# TODO: track detection strength, order new scouting when it goes up
return [0, 0] # last time we had partial vis of the system, the planet was stealthed to us
species_name = planet.speciesName
species = fo.getSpecies(species_name)
if not species or AIDependencies.TAG_DESTROYED_ON_CONQUEST in species.tags:
# this call iterates over this Empire's available species with which it could colonize after an invasion
planet_eval = ColonisationAI.assign_colonisation_values([planet_id], MissionType.INVASION, None, detail)
pop_val = max(0.75 * planet_eval.get(planet_id, [0])[0],
ColonisationAI.evaluate_planet(planet_id, MissionType.OUTPOST, None, detail))
else:
pop_val = ColonisationAI.evaluate_planet(planet_id, MissionType.INVASION, species_name, detail)
bld_tally = 0
for bldType in [universe.getBuilding(bldg).buildingTypeName for bldg in planet.buildingIDs]:
bval = building_values.get(bldType, 50)
bld_tally += bval
detail.append("%s: %d" % (bldType, bval))
tech_tally = 0
for unlocked_tech in AIDependencies.SPECIES_TECH_UNLOCKS.get(species_name, []):
if not tech_is_complete(unlocked_tech):
rp_cost = fo.getTech(unlocked_tech).researchCost(empire_id)
tech_tally += rp_cost * 4
detail.append("%s: %d" % (unlocked_tech, rp_cost * 4))
p_sys_id = planet.systemID
capitol_id = PlanetUtilsAI.get_capital()
least_jumps_path = []
clear_path = True
if capitol_id:
homeworld = universe.getPlanet(capitol_id)
if homeworld:
home_system_id = homeworld.systemID
eval_system_id = planet.systemID
if (home_system_id != INVALID_ID) and (eval_system_id != INVALID_ID):
least_jumps_path = list(universe.leastJumpsPath(home_system_id, eval_system_id, empire_id))
max_jumps = len(least_jumps_path)
system_status = foAI.foAIstate.systemStatus.get(p_sys_id, {})
system_fleet_treat = system_status.get('fleetThreat', 1000)
system_monster_threat = system_status.get('monsterThreat', 0)
sys_total_threat = system_fleet_treat + system_monster_threat + system_status.get('planetThreat', 0)
max_path_threat = system_fleet_treat
mil_ship_rating = MilitaryAI.cur_best_mil_ship_rating()
for path_sys_id in least_jumps_path:
path_leg_status = foAI.foAIstate.systemStatus.get(path_sys_id, {})
path_leg_threat = path_leg_status.get('fleetThreat', 1000) + path_leg_status.get('monsterThreat', 0)
if path_leg_threat > 0.5 * mil_ship_rating:
clear_path = False
if path_leg_threat > max_path_threat:
max_path_threat = path_leg_threat
pop = planet.currentMeterValue(fo.meterType.population)
target_pop = planet.currentMeterValue(fo.meterType.targetPopulation)
troops = planet.currentMeterValue(fo.meterType.troops)
max_troops = planet.currentMeterValue(fo.meterType.maxTroops)
# TODO: refactor troop determination into function for use in mid-mission updates and also consider defender techs
max_troops += AIDependencies.TROOPS_PER_POP * (target_pop - pop)
this_system = universe.getSystem(p_sys_id)
secure_targets = [p_sys_id] + list(this_system.planetIDs)
system_secured = False
for mission in secure_fleet_missions:
if system_secured:
break
secure_fleet_id = mission.fleet.id
s_fleet = universe.getFleet(secure_fleet_id)
if not s_fleet or s_fleet.systemID != p_sys_id:
continue
if mission.type == MissionType.SECURE:
target_obj = mission.target.get_object()
if target_obj is not None and target_obj.id in secure_targets:
system_secured = True
break
system_secured = system_secured and system_status.get('myFleetRating', 0)
if verbose:
print ("Invasion eval of %s\n"
" - maxShields: %.1f\n"
" - sysFleetThreat: %.1f\n"
" - sysMonsterThreat: %.1f") % (
planet, planet.currentMeterValue(fo.meterType.maxShield), system_fleet_treat,
system_monster_threat)
supply_val = 0
enemy_val = 0
if planet.owner != -1: # value in taking this away from an enemy
enemy_val = 20 * (planet.currentMeterValue(fo.meterType.targetIndustry) +
2*planet.currentMeterValue(fo.meterType.targetResearch))
if p_sys_id in ColonisationAI.annexable_system_ids: # TODO: extend to rings
supply_val = 100
elif p_sys_id in state.get_systems_by_supply_tier(-1):
supply_val = 200
elif p_sys_id in state.get_systems_by_supply_tier(-2):
supply_val = 300
elif p_sys_id in state.get_systems_by_supply_tier(-3):
supply_val = 400
if max_path_threat > 0.5 * mil_ship_rating:
if max_path_threat < 3 * mil_ship_rating:
supply_val *= 0.5
else:
supply_val *= 0.2
# devalue invasions that would require too much military force
threat_factor = min(1, 0.2*MilitaryAI.get_tot_mil_rating()/(sys_total_threat+0.001))**2
design_id, _, locs = ProductionAI.get_best_ship_info(PriorityType.PRODUCTION_INVASION)
if not locs or not universe.getPlanet(locs[0]):
# We are in trouble anyway, so just calculate whatever approximation...
build_time = 4
planned_troops = troops if system_secured else min(troops + max_jumps + build_time, max_troops)
planned_troops += .01 # we must attack with more troops than there are defenders
troop_cost = math.ceil((planned_troops+_TROOPS_SAFETY_MARGIN) / 6.0) * 20 * FleetUtilsAI.get_fleet_upkeep()
else:
loc = locs[0]
species_here = universe.getPlanet(loc).speciesName
design = fo.getShipDesign(design_id)
cost_per_ship = design.productionCost(empire_id, loc)
build_time = design.productionTime(empire_id, loc)
troops_per_ship = CombatRatingsAI.weight_attack_troops(design.troopCapacity,
CombatRatingsAI.get_species_troops_grade(species_here))
planned_troops = troops if system_secured else min(troops + max_jumps + build_time, max_troops)
planned_troops += .01 # we must attack with more troops than there are defenders
ships_needed = math.ceil((planned_troops+_TROOPS_SAFETY_MARGIN) / float(troops_per_ship))
troop_cost = ships_needed * cost_per_ship # fleet upkeep is already included in query from server
# apply some bias to expensive operations
normalized_cost = float(troop_cost) / max(fo.getEmpire().productionPoints, 1)
normalized_cost = max(1., normalized_cost)
cost_score = (normalized_cost**2 / 50.0) * troop_cost
base_score = pop_val + supply_val + bld_tally + tech_tally + enemy_val - cost_score
planet_score = retaliation_risk_factor(planet.owner) * threat_factor * max(0, base_score)
if clear_path:
planet_score *= 1.5
if verbose:
print (' - planet score: %.2f\n'
' - troop score: %.2f\n'
' - projected troop cost: %.1f\n'
' - threat factor: %s\n'
' - planet detail: %s\n'
' - popval: %.1f\n'
' - supplyval: %.1f\n'
' - bldval: %s\n'
' - enemyval: %s') % (planet_score, planned_troops, troop_cost,
threat_factor, detail, pop_val, supply_val, bld_tally, enemy_val)
return [planet_score, planned_troops]
def evaluate_invasion_planet(planet_id, empire, secure_fleet_missions, verbose=True):
"""Return the invasion value (score, troops) of a planet."""
detail = []
building_values = {"BLD_IMPERIAL_PALACE": 1000,
"BLD_CULTURE_ARCHIVES": 1000,
"BLD_SHIPYARD_BASE": 100,
"BLD_SHIPYARD_ORG_ORB_INC": 200,
"BLD_SHIPYARD_ORG_XENO_FAC": 200,
"BLD_SHIPYARD_ORG_CELL_GRO_CHAMB": 200,
"BLD_SHIPYARD_CON_NANOROBO": 300,
"BLD_SHIPYARD_CON_GEOINT": 400,
"BLD_SHIPYARD_CON_ADV_ENGINE": 1000,
"BLD_SHIPYARD_AST": 300,
"BLD_SHIPYARD_AST_REF": 1000,
"BLD_SHIPYARD_ENRG_SOLAR": 1500,
"BLD_INDUSTRY_CENTER": 500,
"BLD_GAS_GIANT_GEN": 200,
"BLD_SOL_ORB_GEN": 800,
"BLD_BLACK_HOLE_POW_GEN": 2000,
"BLD_ENCLAVE_VOID": 500,
"BLD_NEUTRONIUM_EXTRACTOR": 2000,
"BLD_NEUTRONIUM_SYNTH": 2000,
"BLD_NEUTRONIUM_FORGE": 1000,
"BLD_CONC_CAMP": 100,
"BLD_BIOTERROR_PROJECTOR": 1000,
"BLD_SHIPYARD_ENRG_COMP": 3000,
}
# TODO: add more factors, as used for colonization
universe = fo.getUniverse()
empire_id = empire.empireID
max_jumps = 8
planet = universe.getPlanet(planet_id)
if planet is None: # TODO: exclude planets with stealth higher than empireDetection
print "invasion AI couldn't access any info for planet id %d" % planet_id
return [0, 0]
sys_partial_vis_turn = universe.getVisibilityTurnsMap(planet.systemID, empire_id).get(fo.visibility.partial, -9999)
planet_partial_vis_turn = universe.getVisibilityTurnsMap(planet_id, empire_id).get(fo.visibility.partial, -9999)
if planet_partial_vis_turn < sys_partial_vis_turn:
print "invasion AI couldn't get current info on planet id %d (was stealthed at last sighting)" % planet_id
# TODO: track detection strength, order new scouting when it goes up
return [0, 0] # last time we had partial vis of the system, the planet was stealthed to us
species_name = planet.speciesName
species = fo.getSpecies(species_name)
if not species: # this call iterates over this Empire's available species with which it could colonize after an invasion
planet_eval = ColonisationAI.assign_colonisation_values([planet_id], EnumsAI.AIFleetMissionType.FLEET_MISSION_INVASION, None, empire, detail)
pop_val = max(0.75*planet_eval.get(planet_id, [0])[0], ColonisationAI.evaluate_planet(planet_id, EnumsAI.AIFleetMissionType.FLEET_MISSION_OUTPOST, None, empire, detail))
else:
pop_val = ColonisationAI.evaluate_planet(planet_id, EnumsAI.AIFleetMissionType.FLEET_MISSION_INVASION, species_name, empire, detail)
bld_tally = 0
for bldType in [universe.getObject(bldg).buildingTypeName for bldg in planet.buildingIDs]:
bval = building_values.get(bldType, 50)
bld_tally += bval
detail.append("%s: %d" % (bldType, bval))
p_sys_id = planet.systemID
capitol_id = PlanetUtilsAI.get_capital()
least_jumps_path = []
clear_path = True
if capitol_id:
homeworld = universe.getPlanet(capitol_id)
if homeworld:
home_system_id = homeworld.systemID
eval_system_id = planet.systemID
if (home_system_id != -1) and (eval_system_id != -1):
least_jumps_path = list(universe.leastJumpsPath(home_system_id, eval_system_id, empire_id))
max_jumps = len(least_jumps_path)
system_status = foAI.foAIstate.systemStatus.get(p_sys_id, {})
system_fleet_treat = system_status.get('fleetThreat', 1000)
system_monster_threat = system_status.get('monsterThreat', 0)
sys_total_threat = system_fleet_treat + system_monster_threat + system_status.get('planetThreat', 0)
max_path_threat = system_fleet_treat
mil_ship_rating = MilitaryAI.cur_best_mil_ship_rating()
for path_sys_id in least_jumps_path:
path_leg_status = foAI.foAIstate.systemStatus.get(path_sys_id, {})
path_leg_threat = path_leg_status.get('fleetThreat', 1000) + path_leg_status.get('monsterThreat', 0)
if path_leg_threat > 0.5 * mil_ship_rating:
clear_path = False
if path_leg_threat > max_path_threat:
max_path_threat = path_leg_threat
troops = planet.currentMeterValue(fo.meterType.troops)
max_troops = planet.currentMeterValue(fo.meterType.maxTroops)
this_system = universe.getSystem(p_sys_id)
secure_targets = [p_sys_id] + list(this_system.planetIDs)
system_secured = False
for mission in secure_fleet_missions:
if system_secured:
break
secure_fleet_id = mission.target_id
s_fleet = universe.getFleet(secure_fleet_id)
if not s_fleet or s_fleet.systemID != p_sys_id:
continue
for ai_target in mission.get_targets(EnumsAI.AIFleetMissionType.FLEET_MISSION_SECURE):
target_obj = ai_target.target_obj
if (target_obj is not None) and target_obj.id in secure_targets:
system_secured = True
break
if verbose:
print "invasion eval of %s %d --- maxShields %.1f -- sysFleetThreat %.1f -- sysMonsterThreat %.1f" % (
planet.name, planet_id, planet.currentMeterValue(fo.meterType.maxShield), system_fleet_treat,
system_monster_threat)
supply_val = 0
enemy_val = 0
if planet.owner != -1: # value in taking this away from an enemy
enemy_val = 20 * (planet.currentMeterValue(fo.meterType.targetIndustry) + 2*planet.currentMeterValue(fo.meterType.targetResearch))
if p_sys_id in ColonisationAI.annexable_system_ids: # TODO: extend to rings
supply_val = 100
elif p_sys_id in ColonisationAI.annexable_ring1:
supply_val = 200
elif p_sys_id in ColonisationAI.annexable_ring2:
supply_val = 300
elif p_sys_id in ColonisationAI.annexable_ring3:
supply_val = 400
if max_path_threat > 0.5 * mil_ship_rating:
if max_path_threat < 3 * mil_ship_rating:
supply_val *= 0.5
else:
supply_val *= 0.2
threat_factor = min(1, 0.2*MilitaryAI.totMilRating/(sys_total_threat+0.001))**2 # devalue invasions that would require too much military force
build_time = 4
planned_troops = troops if system_secured else min(troops+max_jumps+build_time, max_troops)
if not tech_is_complete("SHP_ORG_HULL"):
troop_cost = math.ceil(planned_troops/6.0) * (40*(1+foAI.foAIstate.shipCount * AIDependencies.SHIP_UPKEEP))
else:
troop_cost = math.ceil(planned_troops/6.0) * (20*(1+foAI.foAIstate.shipCount * AIDependencies.SHIP_UPKEEP))
planet_score = retaliation_risk_factor(planet.owner) * threat_factor * max(0, pop_val+supply_val+bld_tally+enemy_val-0.8*troop_cost)
if clear_path:
planet_score *= 1.5
invasion_score = [planet_score, planned_troops]
print invasion_score, "projected Troop Cost:", troop_cost, ", threatFactor: ", threat_factor, ", planet detail ", detail, "popval, supplyval, bldval, enemyval", pop_val, supply_val, bld_tally, enemy_val
return invasion_score
def evaluate_invasion_planet(planet_id, empire, secure_fleet_missions, verbose=True):
"""Return the invasion value (score, troops) of a planet."""
detail = []
building_values = {"BLD_IMPERIAL_PALACE": 1000,
"BLD_CULTURE_ARCHIVES": 1000,
"BLD_SHIPYARD_BASE": 100,
"BLD_SHIPYARD_ORG_ORB_INC": 200,
"BLD_SHIPYARD_ORG_XENO_FAC": 200,
"BLD_SHIPYARD_ORG_CELL_GRO_CHAMB": 200,
"BLD_SHIPYARD_CON_NANOROBO": 300,
"BLD_SHIPYARD_CON_GEOINT": 400,
"BLD_SHIPYARD_CON_ADV_ENGINE": 1000,
"BLD_SHIPYARD_AST": 300,
"BLD_SHIPYARD_AST_REF": 1000,
"BLD_SHIPYARD_ENRG_SOLAR": 1500,
"BLD_INDUSTRY_CENTER": 500,
"BLD_GAS_GIANT_GEN": 200,
"BLD_SOL_ORB_GEN": 800,
"BLD_BLACK_HOLE_POW_GEN": 2000,
"BLD_ENCLAVE_VOID": 500,
"BLD_NEUTRONIUM_EXTRACTOR": 2000,
"BLD_NEUTRONIUM_SYNTH": 2000,
"BLD_NEUTRONIUM_FORGE": 1000,
"BLD_CONC_CAMP": 100,
"BLD_BIOTERROR_PROJECTOR": 1000,
"BLD_SHIPYARD_ENRG_COMP": 3000,
}
# TODO: add more factors, as used for colonization
universe = fo.getUniverse()
empire_id = empire.empireID
max_jumps = 8
planet = universe.getPlanet(planet_id)
if planet is None: # TODO: exclude planets with stealth higher than empireDetection
print "invasion AI couldn't access any info for planet id %d" % planet_id
return [0, 0]
sys_partial_vis_turn = universe.getVisibilityTurnsMap(planet.systemID, empire_id).get(fo.visibility.partial, -9999)
planet_partial_vis_turn = universe.getVisibilityTurnsMap(planet_id, empire_id).get(fo.visibility.partial, -9999)
if planet_partial_vis_turn < sys_partial_vis_turn:
print "invasion AI couldn't get current info on planet id %d (was stealthed at last sighting)" % planet_id
# TODO: track detection strength, order new scouting when it goes up
return [0, 0] # last time we had partial vis of the system, the planet was stealthed to us
species_name = planet.speciesName
species = fo.getSpecies(species_name)
if not species: # this call iterates over this Empire's available species with which it could colonize after an invasion
planet_eval = ColonisationAI.assign_colonisation_values([planet_id], EnumsAI.AIFleetMissionType.FLEET_MISSION_INVASION, None, empire, detail)
pop_val = max(0.75*planet_eval.get(planet_id, [0])[0], ColonisationAI.evaluate_planet(planet_id, EnumsAI.AIFleetMissionType.FLEET_MISSION_OUTPOST, None, empire, detail))
else:
pop_val = ColonisationAI.evaluate_planet(planet_id, EnumsAI.AIFleetMissionType.FLEET_MISSION_INVASION, species_name, empire, detail)
bld_tally = 0
for bldType in [universe.getObject(bldg).buildingTypeName for bldg in planet.buildingIDs]:
bval = building_values.get(bldType, 50)
bld_tally += bval
detail.append("%s: %d" % (bldType, bval))
p_sys_id = planet.systemID
capitol_id = PlanetUtilsAI.get_capital()
least_jumps_path = []
clear_path = True
if capitol_id:
homeworld = universe.getPlanet(capitol_id)
if homeworld:
home_system_id = homeworld.systemID
eval_system_id = planet.systemID
if (home_system_id != -1) and (eval_system_id != -1):
least_jumps_path = list(universe.leastJumpsPath(home_system_id, eval_system_id, empire_id))
max_jumps = len(least_jumps_path)
system_status = foAI.foAIstate.systemStatus.get(p_sys_id, {})
system_fleet_treat = system_status.get('fleetThreat', 1000)
system_monster_threat = system_status.get('monsterThreat', 0)
sys_total_threat = system_fleet_treat + system_monster_threat + system_status.get('planetThreat', 0)
max_path_threat = system_fleet_treat
mil_ship_rating = MilitaryAI.cur_best_mil_ship_rating()
for path_sys_id in least_jumps_path:
path_leg_status = foAI.foAIstate.systemStatus.get(path_sys_id, {})
path_leg_threat = path_leg_status.get('fleetThreat', 1000) + path_leg_status.get('monsterThreat', 0)
if path_leg_threat > 0.5 * mil_ship_rating:
clear_path = False
if path_leg_threat > max_path_threat:
max_path_threat = path_leg_threat
pop = planet.currentMeterValue(fo.meterType.population)
target_pop = planet.currentMeterValue(fo.meterType.targetPopulation)
troops = planet.currentMeterValue(fo.meterType.troops)
max_troops = planet.currentMeterValue(fo.meterType.maxTroops)
# TODO: refactor troop determination into function for use in mid-mission updates and also consider defender techs
max_troops += AIDependencies.TROOPS_PER_POP * (target_pop - pop)
this_system = universe.getSystem(p_sys_id)
secure_targets = [p_sys_id] + list(this_system.planetIDs)
system_secured = False
for mission in secure_fleet_missions:
if system_secured:
break
secure_fleet_id = mission.target_id
s_fleet = universe.getFleet(secure_fleet_id)
if not s_fleet or s_fleet.systemID != p_sys_id:
continue
for ai_target in mission.get_targets(EnumsAI.AIFleetMissionType.FLEET_MISSION_SECURE):
target_obj = ai_target.target_obj
if (target_obj is not None) and target_obj.id in secure_targets:
system_secured = True
break
system_secured = system_secured and system_status.get('myFleetRating',0)
if verbose:
print "invasion eval of %s %d --- maxShields %.1f -- sysFleetThreat %.1f -- sysMonsterThreat %.1f" % (
planet.name, planet_id, planet.currentMeterValue(fo.meterType.maxShield), system_fleet_treat,
system_monster_threat)
supply_val = 0
enemy_val = 0
if planet.owner != -1: # value in taking this away from an enemy
enemy_val = 20 * (planet.currentMeterValue(fo.meterType.targetIndustry) + 2*planet.currentMeterValue(fo.meterType.targetResearch))
if p_sys_id in ColonisationAI.annexable_system_ids: # TODO: extend to rings
supply_val = 100
elif p_sys_id in ColonisationAI.annexable_ring1:
supply_val = 200
elif p_sys_id in ColonisationAI.annexable_ring2:
supply_val = 300
elif p_sys_id in ColonisationAI.annexable_ring3:
supply_val = 400
if max_path_threat > 0.5 * mil_ship_rating:
if max_path_threat < 3 * mil_ship_rating:
supply_val *= 0.5
else:
supply_val *= 0.2
threat_factor = min(1, 0.2*MilitaryAI.totMilRating/(sys_total_threat+0.001))**2 # devalue invasions that would require too much military force
build_time = 4
planned_troops = troops if system_secured else min(troops+max_jumps+build_time, max_troops)
if not tech_is_complete("SHP_ORG_HULL"):
troop_cost = math.ceil(planned_troops/6.0) * (40*(1+foAI.foAIstate.shipCount * AIDependencies.SHIP_UPKEEP))
else:
troop_cost = math.ceil(planned_troops/6.0) * (20*(1+foAI.foAIstate.shipCount * AIDependencies.SHIP_UPKEEP))
planet_score = retaliation_risk_factor(planet.owner) * threat_factor * max(0, pop_val+supply_val+bld_tally+enemy_val-0.8*troop_cost)
if clear_path:
planet_score *= 1.5
invasion_score = [planet_score, planned_troops]
print invasion_score, "projected Troop Cost:", troop_cost, ", threatFactor: ", threat_factor, ", planet detail ", detail, "popval, supplyval, bldval, enemyval", pop_val, supply_val, bld_tally, enemy_val
return invasion_score
def evaluate_invasion_planet(planet_id, secure_fleet_missions, verbose=True):
"""Return the invasion value (score, troops) of a planet."""
universe = fo.getUniverse()
empire_id = fo.empireID()
detail = []
planet = universe.getPlanet(planet_id)
if planet is None:
debug("Invasion AI couldn't access any info for planet id %d" % planet_id)
return [0, 0]
system_id = planet.systemID
# by using the following instead of simply relying on stealth meter reading, can (sometimes) plan ahead even if
# planet is temporarily shrouded by an ion storm
predicted_detectable = EspionageAI.colony_detectable_by_empire(planet_id, empire=fo.empireID(),
default_result=False)
if not predicted_detectable:
if get_partial_visibility_turn(planet_id) < fo.currentTurn():
debug("InvasionAI predicts planet id %d to be stealthed" % planet_id)
return [0, 0]
else:
debug("InvasionAI predicts planet id %d to be stealthed" % planet_id +
", but somehow have current visibity anyway, will still consider as target")
# Check if the target planet was extra-stealthed somehow its system was last viewed
# this test below may augment the tests above, but can be thrown off by temporary combat-related sighting
system_last_seen = get_partial_visibility_turn(planet_id)
planet_last_seen = get_partial_visibility_turn(system_id)
if planet_last_seen < system_last_seen:
# TODO: track detection strength, order new scouting when it goes up
debug("Invasion AI considering planet id %d (stealthed at last view), still proceeding." % planet_id)
# get a baseline evaluation of the planet as determined by ColonisationAI
species_name = planet.speciesName
species = fo.getSpecies(species_name)
if not species or AIDependencies.TAG_DESTROYED_ON_CONQUEST in species.tags:
# this call iterates over this Empire's available species with which it could colonize after an invasion
planet_eval = ColonisationAI.assign_colonisation_values([planet_id], MissionType.INVASION, None, detail)
colony_base_value = max(0.75 * planet_eval.get(planet_id, [0])[0],
ColonisationAI.evaluate_planet(planet_id, MissionType.OUTPOST, None, detail))
else:
colony_base_value = ColonisationAI.evaluate_planet(planet_id, MissionType.INVASION, species_name, detail)
# Add extra score for all buildings on the planet
building_values = {"BLD_IMPERIAL_PALACE": 1000,
"BLD_CULTURE_ARCHIVES": 1000,
"BLD_AUTO_HISTORY_ANALYSER": 100,
"BLD_SHIPYARD_BASE": 100,
"BLD_SHIPYARD_ORG_ORB_INC": 200,
"BLD_SHIPYARD_ORG_XENO_FAC": 200,
"BLD_SHIPYARD_ORG_CELL_GRO_CHAMB": 200,
"BLD_SHIPYARD_CON_NANOROBO": 300,
"BLD_SHIPYARD_CON_GEOINT": 400,
"BLD_SHIPYARD_CON_ADV_ENGINE": 1000,
"BLD_SHIPYARD_AST": 300,
"BLD_SHIPYARD_AST_REF": 1000,
"BLD_SHIPYARD_ENRG_SOLAR": 1500,
"BLD_INDUSTRY_CENTER": 500,
"BLD_GAS_GIANT_GEN": 200,
"BLD_SOL_ORB_GEN": 800,
"BLD_BLACK_HOLE_POW_GEN": 2000,
"BLD_ENCLAVE_VOID": 500,
"BLD_NEUTRONIUM_EXTRACTOR": 2000,
"BLD_NEUTRONIUM_SYNTH": 2000,
"BLD_NEUTRONIUM_FORGE": 1000,
"BLD_CONC_CAMP": 100,
"BLD_BIOTERROR_PROJECTOR": 1000,
"BLD_SHIPYARD_ENRG_COMP": 3000,
}
bld_tally = 0
for bldType in [universe.getBuilding(bldg).buildingTypeName for bldg in planet.buildingIDs]:
bval = building_values.get(bldType, 50)
bld_tally += bval
detail.append("%s: %d" % (bldType, bval))
# Add extra score for unlocked techs when we conquer the species
tech_tally = 0
value_per_pp = 4
for unlocked_tech in AIDependencies.SPECIES_TECH_UNLOCKS.get(species_name, []):
if not tech_is_complete(unlocked_tech):
rp_cost = fo.getTech(unlocked_tech).researchCost(empire_id)
tech_value = value_per_pp * rp_cost
tech_tally += tech_value
detail.append("%s: %d" % (unlocked_tech, tech_value))
max_jumps = 8
capitol_id = PlanetUtilsAI.get_capital()
least_jumps_path = []
clear_path = True
if capitol_id:
homeworld = universe.getPlanet(capitol_id)
if homeworld and homeworld.systemID != INVALID_ID and system_id != INVALID_ID:
least_jumps_path = list(universe.leastJumpsPath(homeworld.systemID, system_id, empire_id))
max_jumps = len(least_jumps_path)
aistate = get_aistate()
system_status = aistate.systemStatus.get(system_id, {})
system_fleet_treat = system_status.get('fleetThreat', 1000)
system_monster_threat = system_status.get('monsterThreat', 0)
sys_total_threat = system_fleet_treat + system_monster_threat + system_status.get('planetThreat', 0)
max_path_threat = system_fleet_treat
mil_ship_rating = MilitaryAI.cur_best_mil_ship_rating()
for path_sys_id in least_jumps_path:
path_leg_status = aistate.systemStatus.get(path_sys_id, {})
path_leg_threat = path_leg_status.get('fleetThreat', 1000) + path_leg_status.get('monsterThreat', 0)
if path_leg_threat > 0.5 * mil_ship_rating:
clear_path = False
if path_leg_threat > max_path_threat:
max_path_threat = path_leg_threat
pop = planet.currentMeterValue(fo.meterType.population)
target_pop = planet.currentMeterValue(fo.meterType.targetPopulation)
troops = planet.currentMeterValue(fo.meterType.troops)
troop_regen = planet.currentMeterValue(fo.meterType.troops) - planet.initialMeterValue(fo.meterType.troops)
max_troops = planet.currentMeterValue(fo.meterType.maxTroops)
# TODO: refactor troop determination into function for use in mid-mission updates and also consider defender techs
max_troops += AIDependencies.TROOPS_PER_POP * (target_pop - pop)
this_system = universe.getSystem(system_id)
secure_targets = [system_id] + list(this_system.planetIDs)
system_secured = False
for mission in secure_fleet_missions:
if system_secured:
break
secure_fleet_id = mission.fleet.id
s_fleet = universe.getFleet(secure_fleet_id)
if not s_fleet or s_fleet.systemID != system_id:
continue
if mission.type in [MissionType.SECURE, MissionType.MILITARY]:
target_obj = mission.target.get_object()
if target_obj is not None and target_obj.id in secure_targets:
system_secured = True
break
system_secured = system_secured and system_status.get('myFleetRating', 0)
if verbose:
debug("Invasion eval of %s\n"
" - maxShields: %.1f\n"
" - sysFleetThreat: %.1f\n"
" - sysMonsterThreat: %.1f",
planet, planet.currentMeterValue(fo.meterType.maxShield), system_fleet_treat, system_monster_threat)
enemy_val = 0
if planet.owner != -1: # value in taking this away from an enemy
enemy_val = 20 * (planet.currentMeterValue(fo.meterType.targetIndustry) +
2*planet.currentMeterValue(fo.meterType.targetResearch))
# devalue invasions that would require too much military force
preferred_max_portion = MilitaryAI.get_preferred_max_military_portion_for_single_battle()
total_max_mil_rating = MilitaryAI.get_concentrated_tot_mil_rating()
threat_exponent = 2 # TODO: make this a character trait; higher aggression with a lower exponent
threat_factor = min(1, preferred_max_portion * total_max_mil_rating/(sys_total_threat+0.001))**threat_exponent
design_id, _, locs = ProductionAI.get_best_ship_info(PriorityType.PRODUCTION_INVASION)
if not locs or not universe.getPlanet(locs[0]):
# We are in trouble anyway, so just calculate whatever approximation...
build_time = 4
planned_troops = troops if system_secured else min(troops + troop_regen*(max_jumps + build_time), max_troops)
planned_troops += .01 # we must attack with more troops than there are defenders
troop_cost = math.ceil((planned_troops+_TROOPS_SAFETY_MARGIN) / 6.0) * 20 * FleetUtilsAI.get_fleet_upkeep()
else:
loc = locs[0]
species_here = universe.getPlanet(loc).speciesName
design = fo.getShipDesign(design_id)
cost_per_ship = design.productionCost(empire_id, loc)
build_time = design.productionTime(empire_id, loc)
troops_per_ship = CombatRatingsAI.weight_attack_troops(design.troopCapacity,
CombatRatingsAI.get_species_troops_grade(species_here))
planned_troops = troops if system_secured else min(troops + troop_regen*(max_jumps + build_time), max_troops)
planned_troops += .01 # we must attack with more troops than there are defenders
ships_needed = math.ceil((planned_troops+_TROOPS_SAFETY_MARGIN) / float(troops_per_ship))
troop_cost = ships_needed * cost_per_ship # fleet upkeep is already included in query from server
# apply some bias to expensive operations
normalized_cost = float(troop_cost) / max(fo.getEmpire().productionPoints, 1)
normalized_cost = max(1., normalized_cost)
cost_score = (normalized_cost**2 / 50.0) * troop_cost
base_score = colony_base_value + bld_tally + tech_tally + enemy_val - cost_score
# If the AI does have enough total miltary to attack this target, and the target is more than minimally valuable,
# don't let the threat_factor discount the adjusted value below MIN_INVASION_SCORE +1, so that if there are no
# other targets the AI could still pursue this one. Otherwise, scoring pressure from
# MilitaryAI.get_preferred_max_military_portion_for_single_battle might prevent the AI from attacking heavily
# defended but still defeatable targets even if it has no softer targets available.
if total_max_mil_rating > sys_total_threat and base_score > 2 * MIN_INVASION_SCORE:
threat_factor = max(threat_factor, (MIN_INVASION_SCORE + 1)/base_score)
planet_score = retaliation_risk_factor(planet.owner) * threat_factor * max(0, base_score)
if clear_path:
planet_score *= 1.5
if verbose:
debug(' - planet score: %.2f\n'
' - planned troops: %.2f\n'
' - projected troop cost: %.1f\n'
' - threat factor: %s\n'
' - planet detail: %s\n'
' - popval: %.1f\n'
' - bldval: %s\n'
' - enemyval: %s',
planet_score, planned_troops, troop_cost, threat_factor, detail, colony_base_value, bld_tally, enemy_val)
debug(' - system secured: %s' % system_secured)
return [planet_score, planned_troops]
def evaluate_invasion_planet(planet_id, secure_fleet_missions, verbose=True):
"""Return the invasion value (score, troops) of a planet."""
detail = []
building_values = {"BLD_IMPERIAL_PALACE": 1000,
"BLD_CULTURE_ARCHIVES": 1000,
"BLD_AUTO_HISTORY_ANALYSER": 100,
"BLD_SHIPYARD_BASE": 100,
"BLD_SHIPYARD_ORG_ORB_INC": 200,
"BLD_SHIPYARD_ORG_XENO_FAC": 200,
"BLD_SHIPYARD_ORG_CELL_GRO_CHAMB": 200,
"BLD_SHIPYARD_CON_NANOROBO": 300,
"BLD_SHIPYARD_CON_GEOINT": 400,
"BLD_SHIPYARD_CON_ADV_ENGINE": 1000,
"BLD_SHIPYARD_AST": 300,
"BLD_SHIPYARD_AST_REF": 1000,
"BLD_SHIPYARD_ENRG_SOLAR": 1500,
"BLD_INDUSTRY_CENTER": 500,
"BLD_GAS_GIANT_GEN": 200,
"BLD_SOL_ORB_GEN": 800,
"BLD_BLACK_HOLE_POW_GEN": 2000,
"BLD_ENCLAVE_VOID": 500,
"BLD_NEUTRONIUM_EXTRACTOR": 2000,
"BLD_NEUTRONIUM_SYNTH": 2000,
"BLD_NEUTRONIUM_FORGE": 1000,
"BLD_CONC_CAMP": 100,
"BLD_BIOTERROR_PROJECTOR": 1000,
"BLD_SHIPYARD_ENRG_COMP": 3000,
}
# TODO: add more factors, as used for colonization
universe = fo.getUniverse()
empire_id = fo.empireID()
max_jumps = 8
planet = universe.getPlanet(planet_id)
if planet is None: # TODO: exclude planets with stealth higher than empireDetection
print "invasion AI couldn't access any info for planet id %d" % planet_id
return [0, 0]
sys_partial_vis_turn = universe.getVisibilityTurnsMap(planet.systemID, empire_id).get(fo.visibility.partial, -9999)
planet_partial_vis_turn = universe.getVisibilityTurnsMap(planet_id, empire_id).get(fo.visibility.partial, -9999)
if planet_partial_vis_turn < sys_partial_vis_turn:
print "invasion AI couldn't get current info on planet id %d (was stealthed at last sighting)" % planet_id
# TODO: track detection strength, order new scouting when it goes up
return [0, 0] # last time we had partial vis of the system, the planet was stealthed to us
species_name = planet.speciesName
species = fo.getSpecies(species_name)
if not species or AIDependencies.TAG_DESTROYED_ON_CONQUEST in species.tags:
# this call iterates over this Empire's available species with which it could colonize after an invasion
planet_eval = ColonisationAI.assign_colonisation_values([planet_id], MissionType.INVASION, None, detail)
pop_val = max(0.75 * planet_eval.get(planet_id, [0])[0],
ColonisationAI.evaluate_planet(planet_id, MissionType.OUTPOST, None, detail))
else:
pop_val = ColonisationAI.evaluate_planet(planet_id, MissionType.INVASION, species_name, detail)
bld_tally = 0
for bldType in [universe.getBuilding(bldg).buildingTypeName for bldg in planet.buildingIDs]:
bval = building_values.get(bldType, 50)
bld_tally += bval
detail.append("%s: %d" % (bldType, bval))
tech_tally = 0
for unlocked_tech in AIDependencies.SPECIES_TECH_UNLOCKS.get(species_name, []):
if not tech_is_complete(unlocked_tech):
rp_cost = fo.getTech(unlocked_tech).researchCost(empire_id)
tech_tally += rp_cost * 4
detail.append("%s: %d" % (unlocked_tech, rp_cost * 4))
p_sys_id = planet.systemID
capitol_id = PlanetUtilsAI.get_capital()
least_jumps_path = []
clear_path = True
if capitol_id:
homeworld = universe.getPlanet(capitol_id)
if homeworld:
home_system_id = homeworld.systemID
eval_system_id = planet.systemID
if (home_system_id != INVALID_ID) and (eval_system_id != INVALID_ID):
least_jumps_path = list(universe.leastJumpsPath(home_system_id, eval_system_id, empire_id))
max_jumps = len(least_jumps_path)
system_status = foAI.foAIstate.systemStatus.get(p_sys_id, {})
system_fleet_treat = system_status.get('fleetThreat', 1000)
system_monster_threat = system_status.get('monsterThreat', 0)
sys_total_threat = system_fleet_treat + system_monster_threat + system_status.get('planetThreat', 0)
max_path_threat = system_fleet_treat
mil_ship_rating = MilitaryAI.cur_best_mil_ship_rating()
for path_sys_id in least_jumps_path:
path_leg_status = foAI.foAIstate.systemStatus.get(path_sys_id, {})
path_leg_threat = path_leg_status.get('fleetThreat', 1000) + path_leg_status.get('monsterThreat', 0)
if path_leg_threat > 0.5 * mil_ship_rating:
clear_path = False
if path_leg_threat > max_path_threat:
max_path_threat = path_leg_threat
pop = planet.currentMeterValue(fo.meterType.population)
target_pop = planet.currentMeterValue(fo.meterType.targetPopulation)
troops = planet.currentMeterValue(fo.meterType.troops)
max_troops = planet.currentMeterValue(fo.meterType.maxTroops)
# TODO: refactor troop determination into function for use in mid-mission updates and also consider defender techs
max_troops += AIDependencies.TROOPS_PER_POP * (target_pop - pop)
this_system = universe.getSystem(p_sys_id)
secure_targets = [p_sys_id] + list(this_system.planetIDs)
system_secured = False
for mission in secure_fleet_missions:
if system_secured:
break
secure_fleet_id = mission.fleet.id
s_fleet = universe.getFleet(secure_fleet_id)
if not s_fleet or s_fleet.systemID != p_sys_id:
continue
if mission.type == MissionType.SECURE:
target_obj = mission.target.get_object()
if target_obj is not None and target_obj.id in secure_targets:
system_secured = True
break
system_secured = system_secured and system_status.get('myFleetRating', 0)
if verbose:
print ("Invasion eval of %s\n"
" - maxShields: %.1f\n"
" - sysFleetThreat: %.1f\n"
" - sysMonsterThreat: %.1f") % (
planet, planet.currentMeterValue(fo.meterType.maxShield), system_fleet_treat,
system_monster_threat)
supply_val = 0
enemy_val = 0
if planet.owner != -1: # value in taking this away from an enemy
enemy_val = 20 * (planet.currentMeterValue(fo.meterType.targetIndustry) + 2*planet.currentMeterValue(fo.meterType.targetResearch))
if p_sys_id in ColonisationAI.annexable_system_ids: # TODO: extend to rings
supply_val = 100
elif p_sys_id in ColonisationAI.annexable_ring1:
supply_val = 200
elif p_sys_id in ColonisationAI.annexable_ring2:
supply_val = 300
elif p_sys_id in ColonisationAI.annexable_ring3:
supply_val = 400
if max_path_threat > 0.5 * mil_ship_rating:
if max_path_threat < 3 * mil_ship_rating:
supply_val *= 0.5
else:
supply_val *= 0.2
threat_factor = min(1, 0.2*MilitaryAI.get_tot_mil_rating()/(sys_total_threat+0.001))**2 # devalue invasions that would require too much military force
design_id, _, locs = ProductionAI.get_best_ship_info(PriorityType.PRODUCTION_INVASION)
if not locs or not universe.getPlanet(locs[0]):
# We are in trouble anyway, so just calculate whatever approximation...
build_time = 4
planned_troops = troops if system_secured else min(troops + max_jumps + build_time, max_troops)
planned_troops += .01 # we must attack with more troops than there are defenders
troop_cost = math.ceil((planned_troops+_TROOPS_SAFETY_MARGIN) / 6.0) * 20 * FleetUtilsAI.get_fleet_upkeep()
else:
loc = locs[0]
species_here = universe.getPlanet(loc).speciesName
design = fo.getShipDesign(design_id)
cost_per_ship = design.productionCost(empire_id, loc)
build_time = design.productionTime(empire_id, loc)
troops_per_ship = CombatRatingsAI.weight_attack_troops(design.troopCapacity,
CombatRatingsAI.get_species_troops_grade(species_here))
planned_troops = troops if system_secured else min(troops + max_jumps + build_time, max_troops)
planned_troops += .01 # we must attack with more troops than there are defenders
ships_needed = math.ceil((planned_troops+_TROOPS_SAFETY_MARGIN) / float(troops_per_ship))
troop_cost = ships_needed * cost_per_ship # fleet upkeep is already included in query from server
# apply some bias to expensive operations
normalized_cost = float(troop_cost) / max(fo.getEmpire().productionPoints, 1)
normalized_cost = max(1, normalized_cost)
cost_score = (normalized_cost**2 / 50.0) * troop_cost
base_score = pop_val + supply_val + bld_tally + tech_tally + enemy_val - cost_score
planet_score = retaliation_risk_factor(planet.owner) * threat_factor * max(0, base_score)
if clear_path:
planet_score *= 1.5
if verbose:
print (' - planet score: %.2f\n'
' - troop score: %.2f\n'
' - projected troop cost: %.1f\n'
' - threat factor: %s\n'
' - planet detail: %s\n'
' - popval: %.1f\n'
' - supplyval: %.1f\n'
' - bldval: %s\n'
' - enemyval: %s') % (planet_score, planned_troops, troop_cost,
threat_factor, detail, pop_val, supply_val, bld_tally, enemy_val)
return [planet_score, planned_troops]