def evaluate_invasion_planet(planet_id):
"""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 visibility 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)
empire_research_list = tuple(element.tech
for element in fo.getEmpire().researchQueue)
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],
calculate_planet_colonization_rating.
calculate_planet_colonization_rating(
planet_id=planet_id,
mission_type=MissionType.OUTPOST,
spec_name=None,
detail=detail,
empire_research_list=empire_research_list,
),
)
else:
colony_base_value = calculate_planet_colonization_rating.calculate_planet_colonization_rating(
planet_id=planet_id,
mission_type=MissionType.INVASION,
spec_name=species_name,
detail=detail,
empire_research_list=empire_research_list,
)
# 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))
least_jumps_path, max_jumps = _get_path_from_capital(planet)
clear_path = True
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
secure_fleets = get_aistate().get_fleet_missions_with_any_mission_types(
[MissionType.SECURE, MissionType.MILITARY])
for mission in secure_fleets:
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)
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 = 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 += 0.01 # 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,
get_species_tag_grade(species_here, Tags.ATTACKTROOPS))
planned_troops = troops if system_secured else min(
troops + troop_regen * (max_jumps + build_time), max_troops)
planned_troops += 0.01 # 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(1.0, 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 military 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
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 get_invasion_fleets():
invasion_timer.start("gathering initial info")
universe = fo.getUniverse()
empire = fo.getEmpire()
empire_id = fo.empireID()
home_system_id = PlanetUtilsAI.get_capital_sys_id()
aistate = get_aistate()
visible_system_ids = list(aistate.visInteriorSystemIDs) + list(
aistate.visBorderSystemIDs)
if home_system_id != INVALID_ID:
accessible_system_ids = [
sys_id for sys_id in visible_system_ids
if systems_connected(sys_id, home_system_id)
]
else:
debug(
"Empire has no identifiable homeworld; will treat all visible planets as accessible."
)
# TODO: check if any troop ships owned, use their system as home system
accessible_system_ids = visible_system_ids
acessible_planet_ids = PlanetUtilsAI.get_planets_in__systems_ids(
accessible_system_ids)
all_owned_planet_ids = PlanetUtilsAI.get_all_owned_planet_ids(
acessible_planet_ids) # includes unpopulated outposts
all_populated_planets = PlanetUtilsAI.get_populated_planet_ids(
acessible_planet_ids) # includes unowned natives
empire_owned_planet_ids = PlanetUtilsAI.get_owned_planets_by_empire(
universe.planetIDs)
invadable_planet_ids = set(all_owned_planet_ids).union(
all_populated_planets) - set(empire_owned_planet_ids)
invasion_targeted_planet_ids = get_invasion_targeted_planet_ids(
universe.planetIDs, MissionType.INVASION)
invasion_targeted_planet_ids.extend(
get_invasion_targeted_planet_ids(universe.planetIDs,
MissionType.ORBITAL_INVASION))
all_invasion_targeted_system_ids = set(
PlanetUtilsAI.get_systems(invasion_targeted_planet_ids))
invasion_fleet_ids = FleetUtilsAI.get_empire_fleet_ids_by_role(
MissionType.INVASION)
num_invasion_fleets = len(
FleetUtilsAI.extract_fleet_ids_without_mission_types(
invasion_fleet_ids))
debug("Current Invasion Targeted SystemIDs: %s" %
PlanetUtilsAI.sys_name_ids(AIstate.invasionTargetedSystemIDs))
debug("Current Invasion Targeted PlanetIDs: %s" %
PlanetUtilsAI.planet_string(invasion_targeted_planet_ids))
debug(invasion_fleet_ids and "Invasion Fleet IDs: %s" % invasion_fleet_ids
or "Available Invasion Fleets: 0")
debug("Invasion Fleets Without Missions: %s" % num_invasion_fleets)
invasion_timer.start("planning troop base production")
reserved_troop_base_targets = []
if aistate.character.may_invade_with_bases():
available_pp = {}
for el in empire.planetsWithAvailablePP: # keys are sets of ints; data is doubles
avail_pp = el.data()
for pid in el.key():
available_pp[pid] = avail_pp
# For planning base trooper invasion targets we have a two-pass system. (1) In the first pass we consider all
# the invasion targets and figure out which ones appear to be suitable for using base troopers against (i.e., we
# already have a populated planet in the same system that could build base troopers) and we have at least a
# minimal amount of PP available, and (2) in the second pass we go through the reserved base trooper target list
# and check to make sure that there does not appear to be too much military action still needed before the
# target is ready to be invaded, we double check that not too many base troopers would be needed, and if things
# look clear then we queue up the base troopers on the Production Queue and keep track of where we are building
# them, and how many; we may also disqualify and remove previously qualified targets (in case, for example,
# we lost our base trooper source planet since it was first added to list).
#
# For planning and tracking base troopers under construction, we use a dictionary store in
# get_aistate().qualifyingTroopBaseTargets, keyed by the invasion target planet ID. We only store values
# for invasion targets that appear likely to be suitable for base trooper use, and store a 2-item list.
# The first item in this list is the ID of the planet where we expect to build the base troopers, and the second
# entry initially is set to INVALID_ID (-1). The presence of this entry in qualifyingTroopBaseTargets
# flags this target as being reserved as a base-trooper invasion target.
# In the second pass, if/when we actually start construction, then we modify the record, replacing that second
# value with the ID of the planet where the troopers are actually being built. (Right now that is always the
# same as the source planet originally identified, but we could consider reevaluating that, or use that second
# value to instead record how many base troopers have been queued, so that on later turns we can assess if the
# process got delayed & perhaps more troopers need to be queued).
# Pass 1: identify qualifying base troop invasion targets
for pid in invadable_planet_ids: # TODO: reorganize
if pid in aistate.qualifyingTroopBaseTargets:
continue
planet = universe.getPlanet(pid)
if not planet:
continue
sys_id = planet.systemID
sys_partial_vis_turn = get_partial_visibility_turn(sys_id)
planet_partial_vis_turn = get_partial_visibility_turn(pid)
if planet_partial_vis_turn < sys_partial_vis_turn:
continue
best_base_planet = INVALID_ID
best_trooper_count = 0
for pid2 in get_colonized_planets_in_system(sys_id):
if available_pp.get(
pid2, 0
) < 2: # TODO: improve troop base PP sufficiency determination
break
planet2 = universe.getPlanet(pid2)
if not planet2 or not can_build_ship_for_species(
planet2.speciesName):
continue
best_base_trooper_here = get_best_ship_info(
PriorityType.PRODUCTION_ORBITAL_INVASION, pid2)[1]
if not best_base_trooper_here:
continue
troops_per_ship = best_base_trooper_here.troopCapacity
if not troops_per_ship:
continue
species_troop_grade = get_species_tag_grade(
planet2.speciesName, Tags.ATTACKTROOPS)
troops_per_ship = CombatRatingsAI.weight_attack_troops(
troops_per_ship, species_troop_grade)
if troops_per_ship > best_trooper_count:
best_base_planet = pid2
best_trooper_count = troops_per_ship
if best_base_planet != INVALID_ID:
aistate.qualifyingTroopBaseTargets.setdefault(
pid, [best_base_planet, INVALID_ID])
# Pass 2: for each target previously identified for base troopers, check that still qualifies and
# check how many base troopers would be needed; if reasonable then queue up the troops and record this in
# get_aistate().qualifyingTroopBaseTargets
for pid in list(aistate.qualifyingTroopBaseTargets.keys()):
planet = universe.getPlanet(pid)
if planet and planet.owner == empire_id:
del aistate.qualifyingTroopBaseTargets[pid]
continue
if pid in invasion_targeted_planet_ids: # TODO: consider overriding standard invasion mission
continue
if aistate.qualifyingTroopBaseTargets[pid][1] != -1:
reserved_troop_base_targets.append(pid)
if planet:
all_invasion_targeted_system_ids.add(planet.systemID)
# TODO: evaluate changes to situation, any more troops needed, etc.
continue # already building for here
_, planet_troops = evaluate_invasion_planet(pid)
sys_id = planet.systemID
this_sys_status = aistate.systemStatus.get(sys_id, {})
troop_tally = 0
for _fid in this_sys_status.get("myfleets", []):
troop_tally += FleetUtilsAI.count_troops_in_fleet(_fid)
if troop_tally > planet_troops: # base troopers appear unneeded
del aistate.qualifyingTroopBaseTargets[pid]
continue
if planet.currentMeterValue(fo.meterType.shield) > 0 and (
this_sys_status.get("myFleetRating", 0) <
0.8 * this_sys_status.get("totalThreat", 0)
or this_sys_status.get("myFleetRatingVsPlanets", 0) <
this_sys_status.get("planetThreat", 0)):
# this system not secured, so ruling out invasion base troops for now
# don't immediately delete from qualifyingTroopBaseTargets or it will be opened up for regular troops
continue
loc = aistate.qualifyingTroopBaseTargets[pid][0]
best_base_trooper_here = get_best_ship_info(
PriorityType.PRODUCTION_ORBITAL_INVASION, loc)[1]
loc_planet = universe.getPlanet(loc)
if best_base_trooper_here is None: # shouldn't be possible at this point, but just to be safe
warning(
"Could not find a suitable orbital invasion design at %s" %
loc_planet)
continue
# TODO: have TroopShipDesigner give the expected number of troops including species effects directly
troops_per_ship = best_base_trooper_here.troopCapacity
species_troop_grade = get_species_tag_grade(
loc_planet.speciesName, Tags.ATTACKTROOPS)
troops_per_ship = CombatRatingsAI.weight_attack_troops(
troops_per_ship, species_troop_grade)
if not troops_per_ship:
warning(
"The best orbital invasion design at %s seems not to have any troop capacity."
% loc_planet)
continue
_, col_design, build_choices = get_best_ship_info(
PriorityType.PRODUCTION_ORBITAL_INVASION, loc)
if not col_design:
continue
if loc not in build_choices:
warning(
"Best troop design %s can not be produced at planet with id: %s"
% (col_design, build_choices))
continue
n_bases = math.ceil(
(planet_troops + 1) /
troops_per_ship) # TODO: reconsider this +1 safety factor
# TODO: evaluate cost and time-to-build of best base trooper here versus cost and time-to-build-and-travel
# for best regular trooper elsewhere
# For now, we assume what building base troopers is best so long as either (1) we would need no more than
# MAX_BASE_TROOPERS_POOR_INVADERS base troop ships, or (2) our base troopers have more than 1 trooper per
# ship and we would need no more than MAX_BASE_TROOPERS_GOOD_INVADERS base troop ships
if n_bases > MAX_BASE_TROOPERS_POOR_INVADERS or (
troops_per_ship > 1
and n_bases > MAX_BASE_TROOPERS_GOOD_INVADERS):
debug(
"ruling out base invasion troopers for %s due to high number (%d) required."
% (planet, n_bases))
del aistate.qualifyingTroopBaseTargets[pid]
continue
debug(
"Invasion base planning, need %d troops at %d per ship, will build %d ships."
% ((planet_troops + 1), troops_per_ship, n_bases))
retval = fo.issueEnqueueShipProductionOrder(col_design.id, loc)
debug("Enqueueing %d Troop Bases at %s for %s" %
(n_bases, PlanetUtilsAI.planet_string(loc),
PlanetUtilsAI.planet_string(pid)))
if retval != 0:
all_invasion_targeted_system_ids.add(planet.systemID)
reserved_troop_base_targets.append(pid)
aistate.qualifyingTroopBaseTargets[pid][1] = loc
fo.issueChangeProductionQuantityOrder(
empire.productionQueue.size - 1, 1, int(n_bases))
fo.issueRequeueProductionOrder(empire.productionQueue.size - 1,
0)
invasion_timer.start("evaluating target planets")
# TODO: check if any invasion_targeted_planet_ids need more troops assigned
evaluated_planet_ids = list(
set(invadable_planet_ids) - set(invasion_targeted_planet_ids) -
set(reserved_troop_base_targets))
evaluated_planets = assign_invasion_values(evaluated_planet_ids)
sorted_planets = [(pid, pscore % 10000, ptroops)
for pid, (pscore, ptroops) in evaluated_planets.items()]
sorted_planets.sort(key=lambda x: x[1], reverse=True)
sorted_planets = [(pid, pscore % 10000, ptroops)
for pid, pscore, ptroops in sorted_planets]
invasion_table = Table(
Text("Planet"),
Number("Score"),
Text("Species"),
Number("Troops"),
table_name="Potential Targets for Invasion Turn %d" % fo.currentTurn(),
)
for pid, pscore, ptroops in sorted_planets:
planet = universe.getPlanet(pid)
invasion_table.add_row(planet, pscore, planet and planet.speciesName
or "unknown", ptroops)
invasion_table.print_table(info)
sorted_planets = [x for x in sorted_planets if x[1] > 0]
# export opponent planets for other AI modules
AIstate.opponentPlanetIDs = [pid for pid, __, __ in sorted_planets]
AIstate.invasionTargets = sorted_planets
# export invasion targeted systems for other AI modules
AIstate.invasionTargetedSystemIDs = list(all_invasion_targeted_system_ids)
invasion_timer.stop(section_name="evaluating %d target planets" %
(len(evaluated_planet_ids)))
invasion_timer.stop_print_and_clear()
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 get_invasion_fleets():
invasion_timer.start("gathering initial info")
universe = fo.getUniverse()
empire = fo.getEmpire()
empire_id = empire.empireID
all_invasion_fleet_ids = FleetUtilsAI.get_empire_fleet_ids_by_role(MissionType.INVASION)
AIstate.invasionFleetIDs = FleetUtilsAI.extract_fleet_ids_without_mission_types(all_invasion_fleet_ids)
home_system_id = PlanetUtilsAI.get_capital_sys_id()
visible_system_ids = foAI.foAIstate.visInteriorSystemIDs.keys() + foAI.foAIstate. visBorderSystemIDs.keys()
if home_system_id != -1:
accessible_system_ids = [sys_id for sys_id in visible_system_ids
if (sys_id != -1) and universe.systemsConnected(sys_id, home_system_id, empire_id)]
else:
print "Warning: Empire has no identifiable homeworld; will treat all visible planets as accessible."
accessible_system_ids = visible_system_ids # TODO: check if any troop ships owned, use their system as home system
acessible_planet_ids = PlanetUtilsAI.get_planets_in__systems_ids(accessible_system_ids)
all_owned_planet_ids = PlanetUtilsAI.get_all_owned_planet_ids(acessible_planet_ids) # includes unpopulated outposts
all_populated_planets = PlanetUtilsAI.get_populated_planet_ids(acessible_planet_ids) # includes unowned natives
empire_owned_planet_ids = PlanetUtilsAI.get_owned_planets_by_empire(universe.planetIDs)
invadable_planet_ids = set(all_owned_planet_ids).union(all_populated_planets) - set(empire_owned_planet_ids)
invasion_targeted_planet_ids = get_invasion_targeted_planet_ids(universe.planetIDs, MissionType.INVASION)
invasion_targeted_planet_ids.extend(get_invasion_targeted_planet_ids(universe.planetIDs, MissionType.ORBITAL_INVASION))
all_invasion_targeted_system_ids = set(PlanetUtilsAI.get_systems(invasion_targeted_planet_ids))
invasion_fleet_ids = FleetUtilsAI.get_empire_fleet_ids_by_role(MissionType.INVASION)
num_invasion_fleets = len(FleetUtilsAI.extract_fleet_ids_without_mission_types(invasion_fleet_ids))
print "Current Invasion Targeted SystemIDs: ", PlanetUtilsAI.sys_name_ids(AIstate.invasionTargetedSystemIDs)
print "Current Invasion Targeted PlanetIDs: ", PlanetUtilsAI.planet_name_ids(invasion_targeted_planet_ids)
print invasion_fleet_ids and "Invasion Fleet IDs: %s" % invasion_fleet_ids or "Available Invasion Fleets: 0"
print "Invasion Fleets Without Missions: %s" % num_invasion_fleets
invasion_timer.start("planning troop base production")
# only do base invasions if aggression is typical or above
reserved_troop_base_targets = []
if foAI.foAIstate.aggression > fo.aggression.typical:
available_pp = {}
for el in empire.planetsWithAvailablePP: # keys are sets of ints; data is doubles
avail_pp = el.data()
for pid in el.key():
available_pp[pid] = avail_pp
for pid in invadable_planet_ids: # TODO: reorganize
planet = universe.getPlanet(pid)
if not planet:
continue
sys_id = planet.systemID
sys_partial_vis_turn = universe.getVisibilityTurnsMap(planet.systemID, empire_id).get(fo.visibility.partial, -9999)
planet_partial_vis_turn = universe.getVisibilityTurnsMap(pid, empire_id).get(fo.visibility.partial, -9999)
if planet_partial_vis_turn < sys_partial_vis_turn:
continue
for pid2 in state.get_empire_inhabited_planets_by_system().get(sys_id, []):
if available_pp.get(pid2, 0) < 2: # TODO: improve troop base PP sufficiency determination
break
planet2 = universe.getPlanet(pid2)
if not planet2:
continue
if pid not in foAI.foAIstate.qualifyingTroopBaseTargets and planet2.speciesName in ColonisationAI.empire_ship_builders:
foAI.foAIstate.qualifyingTroopBaseTargets.setdefault(pid, [pid2, -1])
break
for pid in list(foAI.foAIstate.qualifyingTroopBaseTargets):
planet = universe.getPlanet(pid) # TODO: also check that still have a colony in this system that can make troops
if planet and planet.owner == empire_id:
del foAI.foAIstate.qualifyingTroopBaseTargets[pid]
secure_ai_fleet_missions = foAI.foAIstate.get_fleet_missions_with_any_mission_types([MissionType.SECURE])
for pid in (set(foAI.foAIstate.qualifyingTroopBaseTargets.keys()) - set(invasion_targeted_planet_ids)): # TODO: consider overriding standard invasion mission
planet = universe.getPlanet(pid)
if foAI.foAIstate.qualifyingTroopBaseTargets[pid][1] != -1:
reserved_troop_base_targets.append(pid)
if planet:
all_invasion_targeted_system_ids.add(planet.systemID)
continue # already building for here
sys_id = planet.systemID
this_sys_status = foAI.foAIstate.systemStatus.get(sys_id, {})
if (planet.currentMeterValue(fo.meterType.shield) > 0 and
this_sys_status.get('myFleetRating', 0) < 0.8 * this_sys_status.get('totalThreat', 0)):
continue
loc = foAI.foAIstate.qualifyingTroopBaseTargets[pid][0]
best_base_trooper_here = ProductionAI.get_best_ship_info(PriorityType.PRODUCTION_ORBITAL_INVASION, loc)[1]
loc_planet = universe.getPlanet(loc)
if best_base_trooper_here is None: # shouldn't be possible at this point, but just to be safe
print "Could not find a suitable orbital invasion design at %s" % loc_planet
continue
# TODO: have TroopShipDesigner give the expected number of troops including species effects directly
troops_per_ship = best_base_trooper_here.troopCapacity
species_troop_grade = CombatRatingsAI.get_species_troops_grade(loc_planet.speciesName)
troops_per_ship = CombatRatingsAI.weight_attack_troops(troops_per_ship, species_troop_grade)
if not troops_per_ship:
print "The best orbital invasion design at %s seems not to have any troop capacity." % loc_planet
continue
this_score, p_troops = evaluate_invasion_planet(pid, empire, secure_ai_fleet_missions, False)
_, col_design, build_choices = ProductionAI.get_best_ship_info(PriorityType.PRODUCTION_ORBITAL_INVASION, loc)
if not col_design:
continue
if loc not in build_choices:
sys.stderr.write(
'Best troop design %s can not be produces in at planet with id: %s\d' % (col_design, build_choices)
)
n_bases = math.ceil((p_troops + 1) / troops_per_ship) # TODO: reconsider this +1 safety factor
print "Invasion base planning, need %d troops at %d pership, will build %d ships." % ((p_troops + 1), troops_per_ship, n_bases)
retval = fo.issueEnqueueShipProductionOrder(col_design.id, loc)
print "Enqueueing %d Troop Bases at %s for %s" % (n_bases, PlanetUtilsAI.planet_name_ids([loc]), PlanetUtilsAI.planet_name_ids([pid]))
if retval != 0:
all_invasion_targeted_system_ids.add(planet.systemID)
reserved_troop_base_targets.append(pid)
foAI.foAIstate.qualifyingTroopBaseTargets[pid][1] = loc
fo.issueChangeProductionQuantityOrder(empire.productionQueue.size - 1, 1, int(n_bases))
fo.issueRequeueProductionOrder(empire.productionQueue.size - 1, 0)
invasion_timer.start("evaluating target planets")
# TODO: check if any invasion_targeted_planet_ids need more troops assigned
evaluated_planet_ids = list(set(invadable_planet_ids) - set(invasion_targeted_planet_ids) - set(reserved_troop_base_targets))
evaluated_planets = assign_invasion_values(evaluated_planet_ids, empire)
sorted_planets = [(pid, pscore % 10000, ptroops) for pid, (pscore, ptroops) in evaluated_planets.items()]
sorted_planets.sort(key=lambda x: x[1], reverse=True)
sorted_planets = [(pid, pscore % 10000, ptroops) for pid, pscore, ptroops in sorted_planets]
invasion_table = Table([Text('Planet'), Float('Score'), Text('Species'), Float('Troops')],
table_name="Potential Targets for Invasion Turn %d" % fo.currentTurn())
for pid, pscore, ptroops in sorted_planets:
planet = universe.getPlanet(pid)
invasion_table.add_row([
planet,
pscore,
planet and planet.speciesName or "unknown",
ptroops
])
print
invasion_table.print_table()
sorted_planets = filter(lambda x: x[1] > 0, sorted_planets)
# export opponent planets for other AI modules
AIstate.opponentPlanetIDs = [pid for pid, _, _ in sorted_planets]
AIstate.invasionTargets = sorted_planets
# export invasion targeted systems for other AI modules
AIstate.invasionTargetedSystemIDs = list(all_invasion_targeted_system_ids)
invasion_timer.stop(section_name="evaluating %d target planets" % (len(evaluated_planet_ids)))
invasion_timer.end()
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 get_invasion_fleets():
invasion_timer.start("gathering initial info")
universe = fo.getUniverse()
empire = fo.getEmpire()
empire_id = fo.empireID()
home_system_id = PlanetUtilsAI.get_capital_sys_id()
aistate = get_aistate()
visible_system_ids = list(aistate.visInteriorSystemIDs) + list(aistate.visBorderSystemIDs)
if home_system_id != INVALID_ID:
accessible_system_ids = [sys_id for sys_id in visible_system_ids if
(sys_id != INVALID_ID) and universe.systemsConnected(sys_id, home_system_id,
empire_id)]
else:
debug("Empire has no identifiable homeworld; will treat all visible planets as accessible.")
# TODO: check if any troop ships owned, use their system as home system
accessible_system_ids = visible_system_ids
acessible_planet_ids = PlanetUtilsAI.get_planets_in__systems_ids(accessible_system_ids)
all_owned_planet_ids = PlanetUtilsAI.get_all_owned_planet_ids(acessible_planet_ids) # includes unpopulated outposts
all_populated_planets = PlanetUtilsAI.get_populated_planet_ids(acessible_planet_ids) # includes unowned natives
empire_owned_planet_ids = PlanetUtilsAI.get_owned_planets_by_empire(universe.planetIDs)
invadable_planet_ids = set(all_owned_planet_ids).union(all_populated_planets) - set(empire_owned_planet_ids)
invasion_targeted_planet_ids = get_invasion_targeted_planet_ids(universe.planetIDs, MissionType.INVASION)
invasion_targeted_planet_ids.extend(
get_invasion_targeted_planet_ids(universe.planetIDs, MissionType.ORBITAL_INVASION))
all_invasion_targeted_system_ids = set(PlanetUtilsAI.get_systems(invasion_targeted_planet_ids))
invasion_fleet_ids = FleetUtilsAI.get_empire_fleet_ids_by_role(MissionType.INVASION)
num_invasion_fleets = len(FleetUtilsAI.extract_fleet_ids_without_mission_types(invasion_fleet_ids))
debug("Current Invasion Targeted SystemIDs: %s" % PlanetUtilsAI.sys_name_ids(AIstate.invasionTargetedSystemIDs))
debug("Current Invasion Targeted PlanetIDs: %s" % PlanetUtilsAI.planet_string(invasion_targeted_planet_ids))
debug(invasion_fleet_ids and "Invasion Fleet IDs: %s" % invasion_fleet_ids or "Available Invasion Fleets: 0")
debug("Invasion Fleets Without Missions: %s" % num_invasion_fleets)
invasion_timer.start("planning troop base production")
reserved_troop_base_targets = []
if aistate.character.may_invade_with_bases():
available_pp = {}
for el in empire.planetsWithAvailablePP: # keys are sets of ints; data is doubles
avail_pp = el.data()
for pid in el.key():
available_pp[pid] = avail_pp
# For planning base trooper invasion targets we have a two-pass system. (1) In the first pass we consider all
# the invasion targets and figure out which ones appear to be suitable for using base troopers against (i.e., we
# already have a populated planet in the same system that could build base troopers) and we have at least a
# minimal amount of PP available, and (2) in the second pass we go through the reserved base trooper target list
# and check to make sure that there does not appear to be too much military action still needed before the
# target is ready to be invaded, we double check that not too many base troopers would be needed, and if things
# look clear then we queue up the base troopers on the Production Queue and keep track of where we are building
# them, and how many; we may also disqualify and remove previously qualified targets (in case, for example,
# we lost our base trooper source planet since it was first added to list).
#
# For planning and tracking base troopers under construction, we use a dictionary store in
# get_aistate().qualifyingTroopBaseTargets, keyed by the invasion target planet ID. We only store values
# for invasion targets that appear likely to be suitable for base trooper use, and store a 2-item list.
# The first item in this list is the ID of the planet where we expect to build the base troopers, and the second
# entry initially is set to INVALID_ID (-1). The presence of this entry in qualifyingTroopBaseTargets
# flags this target as being reserved as a base-trooper invasion target.
# In the second pass, if/when we actually start construction, then we modify the record, replacing that second
# value with the ID of the planet where the troopers are actually being built. (Right now that is always the
# same as the source planet originally identified, but we could consider reevaluating that, or use that second
# value to instead record how many base troopers have been queued, so that on later turns we can assess if the
# process got delayed & perhaps more troopers need to be queued).
secure_ai_fleet_missions = aistate.get_fleet_missions_with_any_mission_types([MissionType.SECURE,
MissionType.MILITARY])
# Pass 1: identify qualifying base troop invasion targets
for pid in invadable_planet_ids: # TODO: reorganize
if pid in aistate.qualifyingTroopBaseTargets:
continue
planet = universe.getPlanet(pid)
if not planet:
continue
sys_id = planet.systemID
sys_partial_vis_turn = get_partial_visibility_turn(sys_id)
planet_partial_vis_turn = get_partial_visibility_turn(pid)
if planet_partial_vis_turn < sys_partial_vis_turn:
continue
best_base_planet = INVALID_ID
best_trooper_count = 0
for pid2 in state.get_empire_planets_by_system(sys_id, include_outposts=False):
if available_pp.get(pid2, 0) < 2: # TODO: improve troop base PP sufficiency determination
break
planet2 = universe.getPlanet(pid2)
if not planet2 or planet2.speciesName not in ColonisationAI.empire_ship_builders:
continue
best_base_trooper_here = \
ProductionAI.get_best_ship_info(PriorityType.PRODUCTION_ORBITAL_INVASION, pid2)[1]
if not best_base_trooper_here:
continue
troops_per_ship = best_base_trooper_here.troopCapacity
if not troops_per_ship:
continue
species_troop_grade = CombatRatingsAI.get_species_troops_grade(planet2.speciesName)
troops_per_ship = CombatRatingsAI.weight_attack_troops(troops_per_ship, species_troop_grade)
if troops_per_ship > best_trooper_count:
best_base_planet = pid2
best_trooper_count = troops_per_ship
if best_base_planet != INVALID_ID:
aistate.qualifyingTroopBaseTargets.setdefault(pid, [best_base_planet, INVALID_ID])
# Pass 2: for each target previously identified for base troopers, check that still qualifies and
# check how many base troopers would be needed; if reasonable then queue up the troops and record this in
# get_aistate().qualifyingTroopBaseTargets
for pid in aistate.qualifyingTroopBaseTargets.keys():
planet = universe.getPlanet(pid)
if planet and planet.owner == empire_id:
del aistate.qualifyingTroopBaseTargets[pid]
continue
if pid in invasion_targeted_planet_ids: # TODO: consider overriding standard invasion mission
continue
if aistate.qualifyingTroopBaseTargets[pid][1] != -1:
reserved_troop_base_targets.append(pid)
if planet:
all_invasion_targeted_system_ids.add(planet.systemID)
# TODO: evaluate changes to situation, any more troops needed, etc.
continue # already building for here
_, planet_troops = evaluate_invasion_planet(pid, secure_ai_fleet_missions, True)
sys_id = planet.systemID
this_sys_status = aistate.systemStatus.get(sys_id, {})
troop_tally = 0
for _fid in this_sys_status.get('myfleets', []):
troop_tally += FleetUtilsAI.count_troops_in_fleet(_fid)
if troop_tally > planet_troops: # base troopers appear unneeded
del aistate.qualifyingTroopBaseTargets[pid]
continue
if (planet.currentMeterValue(fo.meterType.shield) > 0 and
(this_sys_status.get('myFleetRating', 0) < 0.8 * this_sys_status.get('totalThreat', 0) or
this_sys_status.get('myFleetRatingVsPlanets', 0) < this_sys_status.get('planetThreat', 0))):
# this system not secured, so ruling out invasion base troops for now
# don't immediately delete from qualifyingTroopBaseTargets or it will be opened up for regular troops
continue
loc = aistate.qualifyingTroopBaseTargets[pid][0]
best_base_trooper_here = ProductionAI.get_best_ship_info(PriorityType.PRODUCTION_ORBITAL_INVASION, loc)[1]
loc_planet = universe.getPlanet(loc)
if best_base_trooper_here is None: # shouldn't be possible at this point, but just to be safe
warn("Could not find a suitable orbital invasion design at %s" % loc_planet)
continue
# TODO: have TroopShipDesigner give the expected number of troops including species effects directly
troops_per_ship = best_base_trooper_here.troopCapacity
species_troop_grade = CombatRatingsAI.get_species_troops_grade(loc_planet.speciesName)
troops_per_ship = CombatRatingsAI.weight_attack_troops(troops_per_ship, species_troop_grade)
if not troops_per_ship:
warn("The best orbital invasion design at %s seems not to have any troop capacity." % loc_planet)
continue
_, col_design, build_choices = ProductionAI.get_best_ship_info(PriorityType.PRODUCTION_ORBITAL_INVASION,
loc)
if not col_design:
continue
if loc not in build_choices:
warn('Best troop design %s can not be produced at planet with id: %s\d' % (col_design, build_choices))
continue
n_bases = math.ceil((planet_troops + 1) / troops_per_ship) # TODO: reconsider this +1 safety factor
# TODO: evaluate cost and time-to-build of best base trooper here versus cost and time-to-build-and-travel
# for best regular trooper elsewhere
# For now, we assume what building base troopers is best so long as either (1) we would need no more than
# MAX_BASE_TROOPERS_POOR_INVADERS base troop ships, or (2) our base troopers have more than 1 trooper per
# ship and we would need no more than MAX_BASE_TROOPERS_GOOD_INVADERS base troop ships
if (n_bases > MAX_BASE_TROOPERS_POOR_INVADERS or
(troops_per_ship > 1 and n_bases > MAX_BASE_TROOPERS_GOOD_INVADERS)):
debug("ruling out base invasion troopers for %s due to high number (%d) required." % (planet, n_bases))
del aistate.qualifyingTroopBaseTargets[pid]
continue
debug("Invasion base planning, need %d troops at %d per ship, will build %d ships." % (
(planet_troops + 1), troops_per_ship, n_bases))
retval = fo.issueEnqueueShipProductionOrder(col_design.id, loc)
debug("Enqueueing %d Troop Bases at %s for %s" % (n_bases, PlanetUtilsAI.planet_string(loc),
PlanetUtilsAI.planet_string(pid)))
if retval != 0:
all_invasion_targeted_system_ids.add(planet.systemID)
reserved_troop_base_targets.append(pid)
aistate.qualifyingTroopBaseTargets[pid][1] = loc
fo.issueChangeProductionQuantityOrder(empire.productionQueue.size - 1, 1, int(n_bases))
fo.issueRequeueProductionOrder(empire.productionQueue.size - 1, 0)
invasion_timer.start("evaluating target planets")
# TODO: check if any invasion_targeted_planet_ids need more troops assigned
evaluated_planet_ids = list(
set(invadable_planet_ids) - set(invasion_targeted_planet_ids) - set(reserved_troop_base_targets))
evaluated_planets = assign_invasion_values(evaluated_planet_ids)
sorted_planets = [(pid, pscore % 10000, ptroops) for pid, (pscore, ptroops) in evaluated_planets.items()]
sorted_planets.sort(key=lambda x: x[1], reverse=True)
sorted_planets = [(pid, pscore % 10000, ptroops) for pid, pscore, ptroops in sorted_planets]
invasion_table = Table([Text('Planet'), Float('Score'), Text('Species'), Float('Troops')],
table_name="Potential Targets for Invasion Turn %d" % fo.currentTurn())
for pid, pscore, ptroops in sorted_planets:
planet = universe.getPlanet(pid)
invasion_table.add_row([
planet,
pscore,
planet and planet.speciesName or "unknown",
ptroops
])
info(invasion_table)
sorted_planets = filter(lambda x: x[1] > 0, sorted_planets)
# export opponent planets for other AI modules
AIstate.opponentPlanetIDs = [pid for pid, __, __ in sorted_planets]
AIstate.invasionTargets = sorted_planets
# export invasion targeted systems for other AI modules
AIstate.invasionTargetedSystemIDs = list(all_invasion_targeted_system_ids)
invasion_timer.stop(section_name="evaluating %d target planets" % (len(evaluated_planet_ids)))
invasion_timer.stop_print_and_clear()
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]
