extends Node

# gdlint: disable=max-file-lines
# The manager is the deliberate scene-tree facade for the simulation slice and
# intentionally keeps its orchestration readable in one authoritative file.

const SimulationEventLogScript := preload("res://simulation/events/SimulationEventLog.gd")
const VillageEconomyScript := preload("res://simulation/economy/VillageEconomy.gd")
const AnimalCareSystemScript := preload("res://simulation/animals/animal_care_system.gd")
const NpcTickDebugLog := preload("res://simulation/debug/npc_tick_debug_log.gd")
const RelationshipSystemScript := preload("res://simulation/relationships/RelationshipSystem.gd")
const EventKnowledgeSystemScript := preload("res://simulation/knowledge/EventKnowledgeSystem.gd")
const ConflictSystemScript := preload("res://simulation/conflict/ConflictSystem.gd")

signal npc_task_changed(npc: SimNPC, old_task: StringName, new_task: StringName)
signal village_changed(village: SimVillage)
signal npc_died(npc: SimNPC)
signal npc_target_requested(npc: SimNPC)
signal npc_travel_requested(npc: SimNPC, target_position: Vector3)
signal npc_inventory_changed(npc: SimNPC, item_id: StringName, amount: float)
signal economic_event_recorded(event: EconomicEventRecord)
signal state_restored
signal npc_decision_recorded(npc: SimNPC, decision: ActionSelectionResult)
signal relationship_changed(relationship: RelationshipStateRecord, cause_event: EconomicEventRecord)
signal event_knowledge_changed(knower_id: int, event: EconomicEventRecord)
signal event_knowledge_transferred(speaker_id: int, listener_id: int, event: EconomicEventRecord)
signal event_knowledge_forgotten(knower_id: int, event: EconomicEventRecord)
signal opportunity_opened(opportunity: OpportunityStateRecord)
signal opportunity_resolved(opportunity: OpportunityStateRecord, cause_event: EconomicEventRecord)
signal opportunity_invalidated(opportunity: OpportunityStateRecord)
signal situation_opened(situation: SituationStateRecord)
signal situation_closed(situation: SituationStateRecord)
signal quest_journal_changed(entry: QuestJournalEntryStateRecord)
signal commitment_changed(commitment: CommitmentStateRecord)
signal conversation_started(conversation_id: StringName, turn: ConversationTurn)
signal conversation_turn_changed(conversation_id: StringName, turn: ConversationTurn)
signal conversation_ended(conversation_id: StringName)
signal combatant_spawned(combatant_id: StringName)
signal combatant_died(combatant_id: StringName)
signal raid_started(raider_ids: Array[StringName])
signal war_resolved(outcome: StringName)
signal war_aborted
signal player_downed

var village := SimVillage.new()
var player_system := PlayerCitizenSystem.new()

var npcs: Array[SimNPC] = []
@export var tick_interval := 1.2
@export_range(1, 16, 1) var max_ticks_per_frame := 4
@export var simulation_seed: int = 1337
@export var cycle_duration_seconds := 240.0
@export var debug_logs := false
@export var active_world_adapter: Node
@export var home_positions: Array[Vector3] = []

var clock: SimulationClock
var tick_count := 0
var wander_random_sources := {}
var resource_states: Dictionary = {}
var event_log := SimulationEventLogScript.new()
var economy := VillageEconomyScript.new()
var animal_care := AnimalCareSystemScript.new()
var relationship_system := RelationshipSystemScript.new()
var event_knowledge_system := EventKnowledgeSystemScript.new()
var opportunity_system := VillageOpportunitySystem.new()
var situation_system := SituationSystem.create_default()
var quest_journal_system := QuestJournalSystem.new()
var commitment_system := SocialCommitmentSystem.new()
var commitment_lifecycle := CommitmentLifecycleService.new()
var conversation_service := ConversationService.new()
var conversation_history: Array[ConversationActStateRecord] = []
var conflict_system := ConflictSystemScript.new()
var storage_states: Dictionary:
	get:
		return economy.storage_states
var economic_events: Array[EconomicEventRecord]:
	get:
		return event_log.events
var next_event_id: int:
	get:
		return event_log.next_event_id
	set(value):
		event_log.next_event_id = value
var latest_decisions: Dictionary = {}
var action_selector := ActionSelectionSystem.new()
var action_executor := ActionExecutionSystem.new()
var target_resolver := ActionTargetResolver.new()
var activity_command_service: ActivityActionCommandService
var interaction_service: CatalogInteractionService
var _abstract_activity_registry: WorldTargetRegistry
var _abstract_activity_command_service: ActivityActionCommandService
var _active_activity_registry_instance_id := 0
var last_player_resource_query_stats: Dictionary = {}
var _population_view := SimulationPopulationView.new()
var speed_index := 2
var _dialogue_speed_index := -1
var _active_player_conversation: StringName
var _conversation_context_by_id: Dictionary = {}
var _next_conversation_act_id := 0
const SPEED_LEVELS := [0.25, 0.5, 1.0, 2.0, 4.0, 10.0]
const KNOWLEDGE_COMMUNICATION_RADIUS := 2.5
const MAX_CONVERSATION_ACTS_PER_PAIR := 8
const MAX_CONVERSATION_HISTORY := 1024
const SEASON_DAYS := 4
const COLD_DAYS := 3
const SEASON_COLD := &"cold"
const SEASON_WARM := &"warm"
signal speed_changed(multiplier: float)

const NPC_NAMES := ["Amina", "Tarik", "Jasmin", "Elma", "Mirza", "Lejla"]


func _ready() -> void:
	add_to_group("simulation_manager")
	event_log.event_recorded.connect(_on_economic_event_recorded)
	economy.inventory_changed.connect(_on_economy_inventory_changed)
	economy.economic_event_requested.connect(_record_economic_event)
	economy.narrative_event_requested.connect(record_narrative_event)
	animal_care.economic_event_requested.connect(_record_economic_event_at)
	animal_care.narrative_event_requested.connect(record_narrative_event)
	conflict_system.narrative_event_requested.connect(record_narrative_event)
	conflict_system.combatant_spawned.connect(_on_conflict_combatant_spawned)
	conflict_system.combatant_died.connect(_on_conflict_combatant_died)
	conflict_system.raid_started.connect(func(raider_ids): raid_started.emit(raider_ids))
	conflict_system.war_resolved.connect(func(outcome): war_resolved.emit(outcome))
	conflict_system.war_aborted.connect(func(): war_aborted.emit())
	conflict_system.player_damaged.connect(_on_player_damaged)
	conflict_system.player_downed.connect(func(): player_downed.emit())
	action_selector.relationship_system = relationship_system
	var definition_errors := SimulationDefinitions.validate()
	if not definition_errors.is_empty():
		for error in definition_errors:
			push_error("SimulationManager: " + error)
		set_process(false)
		return
	_configure_interaction_services()
	clock = SimulationClock.new(tick_interval)
	clock.cycle_duration_seconds = cycle_duration_seconds
	clock.elapsed_ticks = int(0.25 * cycle_duration_seconds / tick_interval)
	village.debug_logs = debug_logs
	economy.configure(village, debug_logs)
	animal_care.configure(economy, active_world_adapter)
	player_system.configure(economy, _record_player_event_at)
	conflict_system.configure(economy, tick_interval)
	economy.initialize_storage()
	village.update_modifiers()
	village.update_priorities()
	generate_npcs()
	relationship_system.initialize_households(npcs)
	conflict_system.initialize_factions()
	conflict_system.register_npc_combatants(npcs)
	call_deferred("register_loaded_resource_nodes")
	animal_care.call_deferred("register_loaded_nodes")
	call_deferred("register_loaded_storage_nodes")
	if debug_logs:
		print("--- Simulation started ---")


func _process(delta: float) -> void:
	advance_player_combat_time(delta)
	var ticks_due := clock.advance(delta * SPEED_LEVELS[speed_index], max_ticks_per_frame)
	for tick in ticks_due:
		simulate_tick()


func _input(event: InputEvent) -> void:
	if not event is InputEventKey or not event.pressed or event.echo:
		return
	if event.keycode == KEY_BRACKETLEFT:
		speed_index = maxi(speed_index - 1, 0)
		speed_changed.emit(SPEED_LEVELS[speed_index])
		if debug_logs:
			print("[SimulationManager] Speed: %.2fx" % SPEED_LEVELS[speed_index])
	elif event.keycode == KEY_BRACKETRIGHT:
		speed_index = mini(speed_index + 1, SPEED_LEVELS.size() - 1)
		speed_changed.emit(SPEED_LEVELS[speed_index])
		if debug_logs:
			print("[SimulationManager] Speed: %.2fx" % SPEED_LEVELS[speed_index])


func generate_npcs() -> void:
	var profession_ids := SimulationDefinitions.get_profession_ids()
	for i in range(NPC_NAMES.size()):
		var npc_random := _create_random_source(i, 0)
		var profession_index := npc_random.randi_range(0, profession_ids.size() - 1)
		var npc := SimNPC.new(
			i,
			NPC_NAMES[i],
			profession_ids[profession_index],
			npc_random.randf_range(1.0, 10.0),
			npc_random.randf_range(1.0, 10.0),
			npc_random
		)
		npc.debug_logs = debug_logs
		npcs.append(npc)
		wander_random_sources[i] = _create_random_source(i, 1)
	var home_count := home_positions.size()
	if home_count > 0:
		for i in range(npcs.size()):
			npcs[i].home_position = home_positions[i % home_count]
	refresh_population_index()


func refresh_population_index() -> void:
	_population_view.rebuild(npcs)


func _create_random_source(npc_id: int, stream_id: int) -> RandomNumberGenerator:
	var source := RandomNumberGenerator.new()
	source.seed = simulation_seed + (npc_id + 1) * 1000003 + stream_id * 7919
	return source


func get_wander_offset(npc_id: int) -> Vector3:
	var source: RandomNumberGenerator = wander_random_sources.get(npc_id)
	if source == null:
		source = _create_random_source(npc_id, 1)
		wander_random_sources[npc_id] = source
	return Vector3(source.randf_range(-6.0, 6.0), 0.0, source.randf_range(-6.0, 6.0))


func simulate_tick() -> void:
	tick_count += 1
	if debug_logs:
		print("--- Tick ", tick_count, " ---")
	animal_care.advance(tick_count)
	advance_player_needs()
	_advance_resource_regrowth()
	var village_was_changed := false
	refresh_population_index()
	for npc in npcs:
		village_was_changed = _simulate_npc_tick(npc) or village_was_changed
	if village_was_changed:
		village_changed.emit(village)
	conflict_system.advance(tick_count)
	var invalidated: OpportunityStateRecord = opportunity_system.maintain_open_opportunity(
		tick_count, get_knowledge_review_interval(), npcs, get_pantry(), get_woodpile()
	)
	if invalidated != null:
		opportunity_invalidated.emit(invalidated)
	_maintain_emergent_world()
	if tick_count % get_knowledge_review_interval() == 0:
		_maintain_event_knowledge(true)
	if debug_logs:
		print(village.get_summary())


func _simulate_npc_tick(npc: SimNPC) -> bool:
	var previous_task := npc.current_task
	var previous_target := npc.target_id
	var previous_state := npc.task_state
	var was_complete := npc.task_complete
	var was_dead := npc.is_dead

	if animal_care.requires_working_feed_recovery(npc):
		npc.task_state = SimNPC.TASK_STATE_TRAVELING
		npc.task_complete = false
		if not _continue_animal_feed_delivery(npc):
			_redirect_npc_to_wander(npc)
			return false

	action_executor.advance_npc(npc, village)
	_population_view.refresh_npc(npc)
	_select_action_if_idle(npc, previous_state)

	if previous_task != npc.current_task and not previous_target.is_empty():
		release_npc_reservation(npc.id)

	if not was_dead and npc.is_dead:
		_handle_npc_death(npc, previous_task, previous_target)
	elif previous_task != npc.current_task:
		npc_task_changed.emit(npc, previous_task, npc.current_task)
		npc_target_requested.emit(npc)

	var completed := not was_complete and npc.task_complete and not npc.is_dead
	if completed:
		_complete_current_action(npc)
	_population_view.refresh_npc(npc)

	if debug_logs:
		NpcTickDebugLog.print_tick(npc, previous_state)
	return completed


func _select_action_if_idle(npc: SimNPC, previous_state: StringName) -> void:
	if npc.is_dead:
		return
	if previous_state not in [SimNPC.TASK_STATE_IDLE, SimNPC.TASK_STATE_COMPLETE]:
		return
	if npc.task_state not in [SimNPC.TASK_STATE_IDLE, SimNPC.TASK_STATE_COMPLETE]:
		return
	if _is_weak_villager_state(npc):
		record_narrative_event(SimulationIds.EVENT_VILLAGER_WEAK, npc.id)
	var helper := get_active_opportunity_helper()
	var animal_feed_available := animal_care.has_available_feed_target(npc.id)
	var war_raid_active := conflict_system.is_raiding()
	var selection := action_selector.select_action(
		npc,
		village,
		clock.time_of_day(),
		npcs,
		helper,
		_population_view,
		animal_feed_available,
		war_raid_active
	)
	if selection == null:
		return
	latest_decisions[npc.id] = selection
	npc_decision_recorded.emit(npc, selection)
	npc.set_task(selection.action_id, selection.duration_override)
	var definition := SimulationDefinitions.get_action(selection.action_id)
	var display_name := (
		definition.display_name if definition != null else String(selection.action_id)
	)
	record_narrative_event(SimulationIds.EVENT_TASK_STARTED, npc.id, &"", display_name)


func _is_weak_villager_state(npc: SimNPC) -> bool:
	return (
		npc.is_starving
		and npc.energy < 25.0
		and village.food <= 0.0
		and npc.get_inventory_amount(SimulationIds.RESOURCE_FOOD) < 1.0
		and opportunity_system.get_open_opportunity() == null
	)


func _on_conflict_combatant_spawned(combatant_id: StringName) -> void:
	combatant_spawned.emit(combatant_id)


func _on_conflict_combatant_died(combatant_id: StringName) -> void:
	var combatant := conflict_system.get_combatant(combatant_id)
	var npc: SimNPC
	if combatant != null and combatant.get_npc_id() >= 0:
		npc = _find_npc_by_id(combatant.get_npc_id())
		if npc != null:
			_population_view.refresh_npc(npc)
	combatant_died.emit(combatant_id)
	if npc == null or not npc.is_dead:
		return
	var previous_task := npc.last_task if npc.last_task != &"" else SimulationIds.ACTION_IDLE
	_handle_npc_death(npc, previous_task, npc.target_id)


func player_attack(combatant_id: StringName) -> float:
	return conflict_system.player_attack(combatant_id)


func player_attack_ready() -> bool:
	return conflict_system.is_player_attack_ready()


func advance_player_combat_time(delta: float) -> void:
	conflict_system.advance_realtime(delta)


func spawn_wolf(position: Vector3) -> StringName:
	return conflict_system.spawn_wolf(position)


func get_combatant(combatant_id: StringName) -> CombatantStateRecord:
	return conflict_system.get_combatant(combatant_id)


func get_faction(faction_id: StringName) -> FactionStateRecord:
	return conflict_system.get_faction(faction_id)


func get_living_hostile_combatants() -> Array[CombatantStateRecord]:
	return conflict_system.get_living_hostiles()


func get_village_defense() -> float:
	return conflict_system.village_defense()


func get_village_defender_count() -> int:
	return conflict_system.village_defender_count()


func get_tribe_war_plan() -> StringName:
	var tribe := conflict_system.get_faction(SimulationIds.FACTION_TRIBE)
	return tribe.get_war_plan() if tribe != null else SimulationIds.WAR_PLAN_NONE


func _handle_npc_death(npc: SimNPC, previous_task: StringName, previous_target: StringName) -> void:
	if not previous_target.is_empty():
		release_npc_reservation(npc.id)
	npc_died.emit(npc)
	npc_task_changed.emit(npc, previous_task, npc.current_task)
	record_narrative_event(SimulationIds.EVENT_NPC_DIED, npc.id)
	_notify_mourning(npc)
	if debug_logs:
		print("[SimulationManager] NPC died: ", npc.npc_name)


func _complete_current_action(npc: SimNPC) -> void:
	var completed_task := npc.current_task
	var definition := SimulationDefinitions.get_action(completed_task)
	var completion_succeeded := false
	var completion_already_applied := false
	if _uses_activity_command_handler(definition):
		var activity_result := execute_activity_action(
			WorldEntityRef.create(SimulationIds.ENTITY_PERSON, StringName(str(npc.id))),
			completed_task,
			npc.target_id,
			get_action_state_revision()
		)
		completion_succeeded = activity_result != null and activity_result.did_succeed()
		completion_already_applied = completion_succeeded
	elif completed_task == SimulationIds.ACTION_FEED_ANIMAL:
		completion_succeeded = feed_animal(npc.target_id, npc.id)
	else:
		completion_succeeded = economy.consume_completion_cost(npc, definition)
	if completion_succeeded and not completion_already_applied:
		_apply_action_completion(npc, completed_task, definition)
	elif not npc.target_id.is_empty():
		release_npc_reservation(npc.id)

	npc.task_complete = true
	npc.task_state = SimNPC.TASK_STATE_IDLE
	npc.last_task = completed_task
	npc.current_task = SimulationIds.ACTION_IDLE
	npc.has_travel_target = false
	npc.target_id = &""
	npc_task_changed.emit(npc, completed_task, npc.current_task)


func _apply_action_completion(
	npc: SimNPC, completed_task: StringName, definition: ActionDefinition
) -> void:
	if definition != null and definition.target_type == SimulationIds.TARGET_RESOURCE:
		_complete_resource_gather(npc, completed_task)
		return
	match completed_task:
		SimulationIds.ACTION_DEPOSIT_FOOD:
			economy.deposit_inventory(npc, SimulationIds.RESOURCE_FOOD)
		SimulationIds.ACTION_DEPOSIT_WOOD:
			economy.deposit_inventory(npc, SimulationIds.RESOURCE_WOOD)
		SimulationIds.ACTION_WITHDRAW_FOOD:
			economy.withdraw_to_inventory(npc, SimulationIds.RESOURCE_FOOD, 1.0)
		SimulationIds.ACTION_EAT:
			economy.consume_npc_food(npc)
		SimulationIds.ACTION_SLEEP:
			npc.energy = minf(npc.energy + 40.0, 100.0)
			npc.position = npc.home_position
			record_narrative_event(SimulationIds.EVENT_NPC_SLEPT, npc.id)
			if village.safety < 25.0 and opportunity_system.get_open_opportunity() == null:
				record_narrative_event(SimulationIds.EVENT_HOME_DAMAGED, npc.id)
		SimulationIds.ACTION_FEED_ANIMAL:
			pass
		SimulationIds.ACTION_REST, SimulationIds.ACTION_WANDER:
			village.apply_npc_task(npc)
		SimulationIds.ACTION_DEFEND:
			village.apply_metric_delta(&"safety", 0.5)
	if debug_logs and completed_task == SimulationIds.ACTION_SLEEP:
		print("[SimulationManager] ", npc.npc_name, " completed sleep at home")


func _complete_resource_gather(npc: SimNPC, completed_task: StringName) -> void:
	var resource_state := get_resource_state(npc.target_id)
	if resource_state == null or resource_state.get_reserved_by() != npc.id:
		if debug_logs:
			print(
				(
					"[SimulationManager] %s could not complete %s: invalid reservation"
					% [npc.npc_name, completed_task]
				)
			)
		release_npc_reservation(npc.id)
		return

	var extracted := resource_state.extract(
		resource_state.get_yield_per_action() * _gather_yield_multiplier()
	)
	if extracted > 0.0:
		var resource_id := resource_state.get_resource_id()
		npc.add_inventory(resource_id, extracted)
		npc_inventory_changed.emit(npc, resource_id, npc.get_inventory_amount(resource_id))
		_record_economic_event(
			SimulationIds.EVENT_RESOURCE_EXTRACTED,
			npc.id,
			resource_state.get_node_id(),
			SimulationIds.npc_inventory_id(npc.id),
			resource_id,
			extracted
		)
		if resource_state.get_amount_remaining() <= 0.0:
			record_narrative_event(
				SimulationIds.EVENT_RESOURCE_DEPLETED, npc.id, resource_state.get_node_id()
			)
		if debug_logs:
			print(
				(
					"[SimulationManager] %s extracted %.1f %s from %s"
					% [npc.npc_name, extracted, resource_id, resource_state.get_node_id()]
				)
			)
	release_npc_reservation(npc.id)


func release_npc_reservation(npc_id: int) -> void:
	var npc := _find_npc_by_id(npc_id)
	if npc == null:
		return
	if npc.target_id != &"":
		var resource_state := get_resource_state(npc.target_id)
		if resource_state != null:
			resource_state.release(npc.id)
		var animal_state := animal_care.get_state(npc.target_id)
		if animal_state != null:
			animal_state.release(npc.id)
		npc.target_id = &""


func notify_npc_arrived(npc_id: int) -> void:
	var npc := _find_npc_by_id(npc_id)
	if npc == null or npc.is_dead:
		return

	if npc.task_state == SimNPC.TASK_STATE_TRAVELING:
		var definition := SimulationDefinitions.get_action(npc.current_task)
		if (
			npc.target_id != &""
			and definition != null
			and definition.target_type == SimulationIds.TARGET_RESOURCE
		):
			var resource_state := get_resource_state(npc.target_id)
			if (
				resource_state == null
				or not resource_state.can_extract()
				or resource_state.get_reserved_by() != npc.id
			):
				if debug_logs:
					NpcTickDebugLog.print_unavailable_resource(npc)
				notify_npc_navigation_failed(npc.id)
				return
		if (
			npc.target_id != &""
			and definition != null
			and definition.target_type == SimulationIds.TARGET_ANIMAL
		):
			if not animal_care.can_complete_feed(npc.target_id, npc.id):
				if debug_logs:
					NpcTickDebugLog.print_unavailable_animal(npc)
				notify_npc_navigation_failed(npc.id)
				return
			if animal_care.requires_feed_pickup(npc):
				if _continue_animal_feed_delivery(npc):
					return
				_redirect_npc_to_wander(npc)
				return

		npc.has_travel_target = false
		npc.start_working(
			npc.current_task == SimulationIds.ACTION_FEED_ANIMAL and npc.task_progress > 0.0
		)

		var working_speakers: Array[SimNPC] = []
		if npc.target_id != &"":
			for other in npcs:
				if other.id == npc.id or other.is_dead:
					continue
				if other.target_id != npc.target_id:
					continue
				if other.task_state in [SimNPC.TASK_STATE_TRAVELING, SimNPC.TASK_STATE_WORKING]:
					relationship_system.increase_shared_work_familiarity(npc.id, other.id)
				if other.task_state == SimNPC.TASK_STATE_WORKING:
					working_speakers.append(other)
			working_speakers.sort_custom(_sort_npcs_by_id)
			for speaker in working_speakers:
				if try_communicate_at_shared_activity(speaker.id, npc.id):
					break

		if debug_logs:
			NpcTickDebugLog.print_started_work(npc)


func _continue_animal_feed_delivery(npc: SimNPC) -> bool:
	var animal_target := target_resolver.resolve_claimed_animal(npc, self, active_world_adapter)
	var pantry_target := target_resolver.resolve_storage_target(
		SimulationIds.STORAGE_VILLAGE_PANTRY, active_world_adapter
	)
	if animal_target.is_empty() or pantry_target.is_empty():
		return false
	if not npc.travel_target_position.is_equal_approx(pantry_target["position"]):
		npc.travel_target_position = pantry_target["position"]
		npc.has_travel_target = true
		npc_travel_requested.emit(npc, npc.travel_target_position)
		return true
	var pickup_target := npc.travel_target_position
	npc.travel_target_position = animal_target["position"]
	npc.has_travel_target = true
	if not animal_care.collect_feed_supply(npc):
		npc.travel_target_position = pickup_target
		return false
	village_changed.emit(village)
	npc_travel_requested.emit(npc, npc.travel_target_position)
	return true


func _redirect_npc_to_wander(npc: SimNPC) -> void:
	var failed_task := npc.current_task
	release_npc_reservation(npc.id)
	npc.last_task = failed_task
	npc.set_task(SimulationIds.ACTION_WANDER, 2.0)
	npc_task_changed.emit(npc, failed_task, npc.current_task)
	npc_target_requested.emit(npc)


func notify_npc_navigation_failed(npc_id: int) -> void:
	var npc := _find_npc_by_id(npc_id)
	if npc == null or npc.is_dead or npc.task_state != SimNPC.TASK_STATE_TRAVELING:
		return

	var failed_task := npc.current_task
	_redirect_npc_to_wander(npc)

	if debug_logs:
		NpcTickDebugLog.print_navigation_failure(npc, failed_task)


func resolve_npc_target(npc_id: int, origin: Vector3) -> bool:
	var npc := _find_npc_by_id(npc_id)
	if npc == null or npc.is_dead or npc.task_state != SimNPC.TASK_STATE_TRAVELING:
		return false
	if npc.current_task == SimulationIds.ACTION_SLEEP:
		npc.travel_target_position = npc.home_position
		npc.has_travel_target = true
		npc_travel_requested.emit(npc, npc.travel_target_position)
		return true
	if active_world_adapter == null:
		push_error("SimulationManager: active_world_adapter is missing")
		return false
	var definition := SimulationDefinitions.get_action(npc.current_task)
	if _uses_activity_command_handler(definition) and not _ensure_interaction_services_current():
		return false
	var result := target_resolver.resolve(npc, origin, self, active_world_adapter)
	if result.is_empty():
		notify_npc_navigation_failed(npc.id)
		return false
	npc.target_id = StringName(result.get("target_id", ""))
	npc.travel_target_position = result["position"]
	if (
		definition != null
		and _uses_activity_command_handler(definition)
		and not _bind_abstract_activity_target(
			npc.target_id, npc.current_task, npc.travel_target_position
		)
	):
		notify_npc_navigation_failed(npc.id)
		return false
	npc.has_travel_target = true
	npc_travel_requested.emit(npc, npc.travel_target_position)
	return true


func request_current_travel(npc_id: int) -> bool:
	var npc := _find_npc_by_id(npc_id)
	if npc == null or npc.task_state != SimNPC.TASK_STATE_TRAVELING:
		return false
	if npc.has_travel_target:
		npc_travel_requested.emit(npc, npc.travel_target_position)
	else:
		npc_target_requested.emit(npc)
	return true


func synchronize_npc_position(npc_id: int, active_position: Vector3) -> bool:
	var npc := _find_npc_by_id(npc_id)
	if npc == null:
		return false
	npc.position = active_position
	return true


func get_activity_target_claim_count(target_id: StringName, except_npc_id: int = -1) -> int:
	var count := 0
	for npc in npcs:
		if npc.id == except_npc_id or npc.is_dead:
			continue
		if npc.target_id != target_id:
			continue
		if npc.task_state in [SimNPC.TASK_STATE_TRAVELING, SimNPC.TASK_STATE_WORKING]:
			count += 1
	return count


func get_action_state_revision() -> int:
	return event_log.next_event_id


func get_player_activity_offer(from_position: Vector3, max_distance: float) -> Dictionary:
	if not _ensure_interaction_services_current():
		return {}
	if (
		interaction_service == null
		or active_world_adapter == null
		or not from_position.is_finite()
		or not is_finite(max_distance)
		or max_distance <= 0.0
		or not active_world_adapter.has_method("get_target_registry")
	):
		return {}
	var registry := active_world_adapter.call("get_target_registry") as WorldTargetRegistry
	if registry == null:
		return {}
	var actor := WorldEntityRef.create(
		SimulationIds.ENTITY_PLAYER, StringName(str(SimulationIds.PLAYER_ACTOR_ID))
	)
	var candidates: Array[Dictionary] = []
	for descriptor in registry.get_descriptors(ActiveWorldAdapter.TARGET_KIND_ACTIVITY):
		var distance := from_position.distance_to(descriptor.get_local_position())
		if distance > max_distance:
			continue
		var handle := registry.get_handle(descriptor.get_target_id())
		for offer in interaction_service.get_offers(actor, handle):
			var definition := SimulationDefinitions.get_action(offer.get_action_id())
			if not _uses_activity_command_handler(definition):
				continue
			var capability := descriptor.get_capability(offer.get_action_id())
			var raw_range: Variant = capability.get_attribute(&"interaction_range", 0.0)
			if raw_range is not int and raw_range is not float:
				continue
			var capability_range := float(raw_range)
			if (
				not is_finite(capability_range)
				or capability_range <= 0.0
				or distance > capability_range
			):
				continue
			(
				candidates
				. append(
					{
						"action_id": String(offer.get_action_id()),
						"target_id": String(descriptor.get_target_id()),
						"display_name": descriptor.get_display_name(),
						"action_name": offer.get_display_name(),
						"distance": distance,
						"priority": offer.get_priority(),
						"state_revision": get_action_state_revision(),
						"target_generation": handle.get_generation(),
						"target_context_id": String(handle.get_context_id()),
						"target_registry_instance_id": registry.get_instance_id(),
						"target_kind": String(handle.get_target_kind()),
						"effect": _player_activity_effect_summary(definition),
						"enabled": offer.is_enabled(),
						"blocked_reason": offer.get_rejection_reason(),
						"offer_parameters": offer.get_parameters(),
					}
				)
			)
	if candidates.is_empty():
		return {}
	candidates.sort_custom(_activity_offer_precedes)
	return candidates[0].duplicate(true)


func execute_activity_action(
	actor: WorldEntityRef,
	action_id: StringName,
	target_id: StringName,
	expected_state_revision: int = -1
) -> ActionResult:
	if (
		actor == null
		or not actor.is_valid()
		or actor.get_entity_type() != SimulationIds.ENTITY_PERSON
		or expected_state_revision < 0
	):
		return ActionResult.rejected(&"activity_invalid_actor", &"invalid_actor")
	return _execute_authorized_activity_action(actor, action_id, target_id, expected_state_revision)


func _execute_authorized_activity_action(
	actor: WorldEntityRef,
	action_id: StringName,
	target_id: StringName,
	expected_state_revision: int
) -> ActionResult:
	if not _ensure_interaction_services_current():
		return ActionResult.rejected(&"activity_scope_mismatch", &"service_unavailable")
	var selected_service := activity_command_service
	var handle: WorldTargetHandle
	if actor.get_entity_type() == SimulationIds.ENTITY_PERSON:
		var npc_id_text := String(actor.get_entity_id())
		var npc := _find_npc_by_id(npc_id_text.to_int()) if npc_id_text.is_valid_int() else null
		if (
			npc == null
			or npc.is_dead
			or npc.task_state != SimNPC.TASK_STATE_COMPLETE
			or not npc.task_complete
			or npc.current_task != action_id
			or npc.target_id.is_empty()
			or npc.target_id != target_id
		):
			return ActionResult.rejected(
				&"activity_assignment_mismatch",
				ActivityActionCommandService.REASON_UNSUPPORTED_ACTOR
			)
		selected_service = _abstract_activity_command_service
		handle = _ensure_abstract_activity_handle(action_id, target_id)
	elif active_world_adapter != null and active_world_adapter.has_method("get_target_registry"):
		var registry := active_world_adapter.call("get_target_registry") as WorldTargetRegistry
		handle = registry.get_handle(target_id) if registry != null else null
	if selected_service == null or handle == null:
		return ActionResult.rejected(&"activity_unavailable", &"service_unavailable")
	var actor_key := actor.index_key() if actor != null else "invalid"
	var command_revision := get_action_state_revision()
	var command_id := StringName(
		(
			"activity_%s_%s_%s_%d_%d"
			% [
				actor_key.sha256_text().substr(0, 8),
				action_id,
				target_id,
				tick_count,
				command_revision,
			]
		)
	)
	return selected_service.submit_command(
		ActionCommand.new(command_id, actor, action_id, handle, {}, expected_state_revision)
	)


func execute_player_activity_action(
	action_id: StringName,
	target_id: StringName,
	expected_state_revision: int = -1,
	expected_target_generation: int = -1,
	expected_context_id: StringName = &"",
	expected_registry_instance_id: int = 0
) -> ActionResult:
	if not _ensure_interaction_services_current():
		return ActionResult.rejected(&"player_activity_stale", &"service_unavailable")
	if (
		expected_state_revision < 0
		or expected_target_generation < 1
		or expected_context_id.is_empty()
		or expected_registry_instance_id == 0
		or active_world_adapter == null
		or not active_world_adapter.has_method("get_target_registry")
	):
		return ActionResult.rejected(
			&"player_activity_stale",
			ActivityActionCommandService.REASON_STALE_TARGET,
			"The activity offer is incomplete; refresh it"
		)
	var registry := active_world_adapter.call("get_target_registry") as WorldTargetRegistry
	var current_handle := registry.get_handle(target_id) if registry != null else null
	if (
		current_handle == null
		or registry.get_instance_id() != expected_registry_instance_id
		or current_handle.get_generation() != expected_target_generation
		or current_handle.get_context_id() != expected_context_id
		or current_handle.get_target_kind() != SimulationIds.TARGET_ACTIVITY
	):
		return ActionResult.rejected(
			&"player_activity_stale",
			ActivityActionCommandService.REASON_STALE_TARGET,
			"The activity changed; refresh the interaction offer"
		)
	return _execute_authorized_activity_action(
		WorldEntityRef.create(
			SimulationIds.ENTITY_PLAYER, StringName(str(SimulationIds.PLAYER_ACTOR_ID))
		),
		action_id,
		target_id,
		expected_state_revision
	)


func _configure_interaction_services() -> bool:
	activity_command_service = null
	interaction_service = null
	_active_activity_registry_instance_id = 0
	var current_scope := event_log.get_scope()
	var scope_world_id := StringName(
		current_scope.get("world_id", SimulationIds.REGIONAL_WORLD_BOSNIA)
	)
	var scope_location_id := StringName(
		current_scope.get("location_id", SimulationIds.REGIONAL_LOCATION_JAJCE)
	)
	if active_world_adapter != null and active_world_adapter.has_method("get_context_identity"):
		var identity: Dictionary = active_world_adapter.call("get_context_identity")
		scope_world_id = StringName(identity.get("world_id", scope_world_id))
		scope_location_id = StringName(identity.get("location_id", scope_location_id))
	if not event_log.configure_scope(scope_world_id, scope_location_id):
		return false
	_abstract_activity_registry = WorldTargetRegistry.new(
		&"simulation_jajce", scope_world_id, scope_location_id
	)
	_abstract_activity_command_service = ActivityActionCommandService.new(
		_abstract_activity_registry,
		SimulationDefinitions.get_action,
		_get_activity_actor_position,
		get_action_state_revision,
		_complete_activity_command,
		false,
		false
	)
	register_abstract_activity_target(
		SimulationIds.ACTIVITY_GUARD_POST, SimulationIds.ACTION_PATROL, Vector3.ZERO
	)
	register_abstract_activity_target(
		SimulationIds.ACTIVITY_STUDY_DESK, SimulationIds.ACTION_STUDY, Vector3.ZERO
	)
	_rebuild_abstract_activity_targets_from_npcs()
	var catalog := ContentCatalog.create_core()
	if not catalog.is_valid():
		return false
	if active_world_adapter == null or not active_world_adapter.has_method("get_target_registry"):
		return true
	var registry := active_world_adapter.call("get_target_registry") as WorldTargetRegistry
	if registry == null:
		return false
	activity_command_service = ActivityActionCommandService.new(
		registry,
		SimulationDefinitions.get_action,
		_get_activity_actor_position,
		get_action_state_revision,
		_complete_activity_command,
		true
	)
	interaction_service = CatalogInteractionService.new(
		registry, catalog, _evaluate_activity_availability, true
	)
	_active_activity_registry_instance_id = registry.get_instance_id()
	return true


func register_abstract_activity_target(
	target_id: StringName, action_id: StringName, position: Vector3, interaction_range: float = 0.5
) -> bool:
	if (
		_abstract_activity_registry == null
		or target_id.is_empty()
		or not position.is_finite()
		or not is_finite(interaction_range)
		or interaction_range <= 0.0
		or _abstract_activity_registry.has_target(target_id)
	):
		return false
	var definition := SimulationDefinitions.get_action(action_id)
	if not _uses_activity_command_handler(definition):
		return false
	var scope := _abstract_activity_registry.get_identity()
	var handle := (
		_abstract_activity_registry
		. register_target(
			(
				WorldTargetDescriptor
				. new(
					target_id,
					ActiveWorldAdapter.TARGET_KIND_ACTIVITY,
					[
						WorldTargetCapability.new(
							action_id, {"interaction_range": interaction_range}
						)
					],
					position,
					definition.display_name,
					{
						"authority": "simulation",
						"world_id": String(scope["world_id"]),
						"location_id": String(scope["location_id"]),
					}
				)
			)
		)
	)
	return handle != null


func _bind_abstract_activity_target(
	target_id: StringName, action_id: StringName, position: Vector3
) -> bool:
	if _abstract_activity_registry == null or target_id.is_empty() or not position.is_finite():
		return false
	var existing := _abstract_activity_registry.get_handle(target_id)
	if existing == null:
		return register_abstract_activity_target(target_id, action_id, position)
	var descriptor := _abstract_activity_registry.resolve_handle(existing)
	if (
		descriptor == null
		or descriptor.get_target_kind() != SimulationIds.TARGET_ACTIVITY
		or not descriptor.has_capability(action_id)
	):
		return false
	return _abstract_activity_registry.update_target_position(existing, position)


func _rebuild_abstract_activity_targets_from_npcs() -> void:
	for npc in npcs:
		if npc.is_dead or npc.target_id.is_empty():
			continue
		var definition := SimulationDefinitions.get_action(npc.current_task)
		if not _uses_activity_command_handler(definition):
			continue
		_bind_abstract_activity_target(npc.target_id, npc.current_task, npc.travel_target_position)


func _ensure_interaction_services_current() -> bool:
	if active_world_adapter == null or not active_world_adapter.has_method("get_target_registry"):
		return _abstract_activity_command_service != null
	var registry := active_world_adapter.call("get_target_registry") as WorldTargetRegistry
	if registry == null:
		return false
	var identity := registry.get_identity()
	var event_scope := event_log.get_scope()
	if (
		StringName(identity["world_id"]) != StringName(event_scope["world_id"])
		or StringName(identity["location_id"]) != StringName(event_scope["location_id"])
	):
		if not economic_events.is_empty():
			activity_command_service = null
			interaction_service = null
			return false
	if registry.get_instance_id() == _active_activity_registry_instance_id:
		return activity_command_service != null and _abstract_activity_command_service != null
	return _configure_interaction_services()


func _ensure_abstract_activity_handle(
	action_id: StringName, requested_target_id: StringName
) -> WorldTargetHandle:
	if _abstract_activity_registry == null:
		return null
	var target_id := requested_target_id
	if target_id.is_empty():
		var candidates := _abstract_activity_registry.get_target_ids(
			ActiveWorldAdapter.TARGET_KIND_ACTIVITY, action_id
		)
		if candidates.size() != 1:
			return null
		target_id = candidates[0]
	var existing := _abstract_activity_registry.get_handle(target_id)
	if existing == null:
		return null
	var descriptor := _abstract_activity_registry.resolve_handle(existing)
	if descriptor == null or not descriptor.has_capability(action_id):
		return null
	return _abstract_activity_registry.get_handle(target_id)


func _evaluate_activity_availability(
	actor: WorldEntityRef,
	_descriptor: WorldTargetDescriptor,
	definition: ActionDefinition,
	_capability: WorldTargetCapability
) -> InteractionAvailabilityDecision:
	if not _uses_activity_command_handler(definition):
		return InteractionAvailabilityDecision.denied(
			&"unsupported_handler",
			"This activity has no supported completion handler",
			[&"handler_missing"]
		)
	var effect := ActivityActionCommandService._metric_effect(definition)
	var actor_id := _activity_actor_id(actor)
	if effect == null or actor_id < SimulationIds.PLAYER_ACTOR_ID:
		return InteractionAvailabilityDecision.denied(
			&"invalid_effect", "This activity has no valid effect", [&"effect_rejected"]
		)
	var requested_amount := _activity_effect_amount(actor_id, effect.value, effect.parameters)
	if _bounded_activity_effect_amount(effect.subject_key, requested_amount) <= 0.0:
		return InteractionAvailabilityDecision.denied(
			&"no_effect", "This activity cannot improve the village further", [&"effect_capped"]
		)
	if definition.has_completion_cost():
		var storage := economy.get_storage_for_resource(definition.completion_cost_resource_id)
		var available := (
			storage.get_amount(definition.completion_cost_resource_id) if storage != null else 0.0
		)
		if available < definition.completion_cost_amount:
			return InteractionAvailabilityDecision.denied(
				&"insufficient_cost",
				(
					"Needs %.0f %s"
					% [definition.completion_cost_amount, definition.completion_cost_resource_id]
				),
				[&"cost_rejected"],
				{"available": available, "required": definition.completion_cost_amount}
			)
	return InteractionAvailabilityDecision.allowed([&"cost_allowed"])


func _get_activity_actor_position(actor: WorldEntityRef) -> Variant:
	var actor_id := _activity_actor_id(actor)
	if actor_id == SimulationIds.PLAYER_ACTOR_ID:
		var combatant := conflict_system.get_combatant(ConflictSystemScript.PLAYER_COMBATANT_ID)
		return combatant.get_position() if combatant != null else null
	var npc := _find_npc_by_id(actor_id)
	return npc.position if npc != null and not npc.is_dead else null


func _complete_activity_command(
	actor: WorldEntityRef,
	action_id: StringName,
	target_id: StringName,
	metric_id: StringName,
	base_amount: float,
	effect_parameters: Dictionary,
	world_position: Vector3
) -> Dictionary:
	var actor_id := _activity_actor_id(actor)
	var definition := SimulationDefinitions.get_action(action_id)
	if actor_id < SimulationIds.PLAYER_ACTOR_ID or not _uses_activity_command_handler(definition):
		return {"succeeded": false, "event_id": -1, "state_revision": get_action_state_revision()}
	var requested_amount := _activity_effect_amount(actor_id, base_amount, effect_parameters)
	var applied_amount := _bounded_activity_effect_amount(metric_id, requested_amount)
	if not is_finite(applied_amount) or applied_amount <= 0.0:
		return {
			"succeeded": false,
			"reason_code": "no_effect",
			"message": "This activity cannot improve the village further",
			"event_id": -1,
			"state_revision": get_action_state_revision(),
		}
	var cost_storage: StorageStateRecord
	var cost_item_id: StringName
	var cost_amount := 0.0
	if definition.has_completion_cost():
		cost_item_id = definition.completion_cost_resource_id
		cost_amount = definition.completion_cost_amount
		cost_storage = economy.get_storage_for_resource(cost_item_id)
		var available := cost_storage.get_amount(cost_item_id) if cost_storage != null else 0.0
		if available < cost_amount:
			var blocked := event_log.record_activity_blocked(
				tick_count,
				actor_id,
				target_id,
				action_id,
				(
					"%s: needs %.0f %s"
					% [definition.display_name, cost_amount, String(cost_item_id).capitalize()]
				),
				world_position,
				cost_storage.get_storage_id() if cost_storage != null else &"",
				cost_item_id,
				cost_amount
			)
			return {
				"succeeded": false,
				"reason_code": "insufficient_cost",
				"message": "Needs %.0f %s" % [cost_amount, cost_item_id],
				"event_id": int(blocked.data["event_id"]) if blocked != null else -1,
				"state_revision": get_action_state_revision(),
			}
	var previous_metric := village.safety if metric_id == &"safety" else village.knowledge
	if cost_storage != null and cost_storage.withdraw(cost_item_id, cost_amount) < cost_amount:
		return {"succeeded": false, "event_id": -1, "state_revision": get_action_state_revision()}
	if cost_storage != null:
		economy.sync_resource(cost_item_id)
	village.apply_metric_delta(metric_id, applied_amount)
	var actual_amount := (
		village.safety - previous_metric
		if metric_id == &"safety"
		else village.knowledge - previous_metric
	)
	if not is_finite(actual_amount) or actual_amount <= 0.0:
		if cost_storage != null:
			cost_storage.deposit(cost_item_id, cost_amount)
			economy.sync_resource(cost_item_id)
		_restore_village_metric(metric_id, previous_metric)
		return {
			"succeeded": false,
			"reason_code": "no_effect",
			"message": "This activity cannot improve the village further",
			"event_id": -1,
			"state_revision": get_action_state_revision(),
		}
	var event := event_log.record_activity_completed(
		tick_count,
		actor_id,
		target_id,
		action_id,
		definition.event_type_id,
		metric_id,
		actual_amount,
		world_position,
		cost_item_id,
		cost_amount
	)
	if event == null:
		if cost_storage != null:
			cost_storage.deposit(cost_item_id, cost_amount)
			economy.sync_resource(cost_item_id)
		_restore_village_metric(metric_id, previous_metric)
		return {"succeeded": false, "event_id": -1, "state_revision": get_action_state_revision()}
	village_changed.emit(village)
	return {
		"succeeded": true,
		"event_id": int(event.data["event_id"]),
		"state_revision": get_action_state_revision(),
		"applied_amount": actual_amount,
	}


func _activity_actor_id(actor: WorldEntityRef) -> int:
	if actor == null or not actor.is_valid():
		return SimulationIds.PLAYER_ACTOR_ID - 1
	var id_text := String(actor.get_entity_id())
	if not id_text.is_valid_int():
		return SimulationIds.PLAYER_ACTOR_ID - 1
	var actor_id := id_text.to_int()
	if actor.get_entity_type() == SimulationIds.ENTITY_PLAYER:
		return (
			actor_id
			if (
				actor_id == SimulationIds.PLAYER_ACTOR_ID
				and player_system.player_state != null
				and not player_system.player_state.is_downed()
			)
			else -2
		)
	if actor.get_entity_type() != SimulationIds.ENTITY_PERSON or actor_id < 0:
		return -2
	var npc := _find_npc_by_id(actor_id)
	return actor_id if npc != null and not npc.is_dead else -2


func _activity_effect_amount(actor_id: int, base_amount: float, parameters: Dictionary) -> float:
	var result := base_amount
	if actor_id == SimulationIds.PLAYER_ACTOR_ID:
		var raw_multiplier: Variant = parameters.get("player_multiplier", 1.0)
		if raw_multiplier is int or raw_multiplier is float:
			result *= float(raw_multiplier)
		return result
	if bool(parameters.get("npc_productivity", false)):
		var npc := _find_npc_by_id(actor_id)
		if npc == null:
			return 0.0
		if npc.is_starving:
			result *= 0.35
		elif npc.energy < 20.0:
			result *= 0.25
		elif npc.energy < 40.0:
			result *= 0.5
	return result


func _player_activity_effect_summary(definition: ActionDefinition) -> Dictionary:
	if definition == null:
		return {}
	var effect := ActivityActionCommandService._metric_effect(definition)
	if effect == null:
		return {}
	var requested_amount := _activity_effect_amount(
		SimulationIds.PLAYER_ACTOR_ID, effect.value, effect.parameters
	)
	return {
		"metric_id": String(effect.subject_key),
		"amount": _bounded_activity_effect_amount(effect.subject_key, requested_amount),
	}


func _bounded_activity_effect_amount(metric_id: StringName, requested_amount: float) -> float:
	if not is_finite(requested_amount) or requested_amount <= 0.0:
		return 0.0
	if metric_id == &"safety":
		return minf(requested_amount, maxf(100.0 - village.safety, 0.0))
	if metric_id == &"knowledge":
		return requested_amount
	return 0.0


func _restore_village_metric(metric_id: StringName, value: float) -> void:
	if metric_id == &"safety":
		village.safety = value
	elif metric_id == &"knowledge":
		village.knowledge = value
	village.update_modifiers()
	village.update_priorities()


static func _uses_activity_command_handler(definition: ActionDefinition) -> bool:
	return (
		definition != null
		and definition.completion_handler_id == ActivityActionCommandService.HANDLER_METRIC_DELTA
	)


static func _activity_offer_precedes(first: Dictionary, second: Dictionary) -> bool:
	if not is_equal_approx(float(first["distance"]), float(second["distance"])):
		return float(first["distance"]) < float(second["distance"])
	if float(first["priority"]) != float(second["priority"]):
		return float(first["priority"]) > float(second["priority"])
	if String(first["target_id"]) != String(second["target_id"]):
		return String(first["target_id"]) < String(second["target_id"])
	return String(first["action_id"]) < String(second["action_id"])


func _notify_mourning(dead_npc: SimNPC) -> void:
	var mourner := relationship_system.get_most_familiar_living(dead_npc.id, npcs, _population_view)
	if mourner == null:
		return
	mourner.mourning_ticks = 100
	if debug_logs:
		print("[SimulationManager] ", mourner.npc_name, " is mourning ", dead_npc.npc_name)


func _record_economic_event(
	event_type: StringName,
	actor_id: int,
	source_id: StringName,
	destination_id: StringName,
	item_id: StringName,
	amount: float
) -> void:
	_record_economic_event_at(
		event_type,
		actor_id,
		source_id,
		destination_id,
		item_id,
		amount,
		_get_event_world_position(actor_id, source_id, destination_id)
	)


func _record_economic_event_at(
	event_type: StringName,
	actor_id: int,
	source_id: StringName,
	destination_id: StringName,
	item_id: StringName,
	amount: float,
	world_position: Vector3
) -> void:
	event_log.record_economic(
		tick_count, event_type, actor_id, source_id, destination_id, item_id, amount, world_position
	)


func record_narrative_event(
	event_type: StringName,
	actor_id: int,
	source_id: StringName = &"",
	action_display: String = "",
	action_id: StringName = &"",
	item_id: StringName = &"",
	required_amount: float = 0.0
) -> void:
	_record_narrative_event_at(
		event_type,
		actor_id,
		source_id,
		action_display,
		_get_event_world_position(actor_id, source_id, &""),
		action_id,
		item_id,
		required_amount
	)


func _record_narrative_event_at(
	event_type: StringName,
	actor_id: int,
	source_id: StringName,
	action_display: String,
	world_position: Vector3,
	action_id: StringName = &"",
	item_id: StringName = &"",
	required_amount: float = 0.0
) -> void:
	event_log.record_narrative(
		tick_count,
		event_type,
		actor_id,
		source_id,
		action_display,
		world_position,
		action_id,
		item_id,
		required_amount
	)


func _get_event_world_position(
	actor_id: int, source_id: StringName, destination_id: StringName
) -> Vector3:
	for npc in npcs:
		if npc.id != actor_id:
			continue
		if not npc.target_id.is_empty() and npc.target_id in [source_id, destination_id]:
			return npc.travel_target_position
		return npc.position
	return Vector3.ZERO


func get_npc_events(npc_id: int, max_count: int = 8) -> Array[EconomicEventRecord]:
	return event_log.get_for_actor(npc_id, max_count)


func get_recent_events(max_count: int = 5) -> Array[EconomicEventRecord]:
	return event_log.get_recent(max_count)


func _on_economic_event_recorded(event: EconomicEventRecord) -> void:
	var learned_records: Array[KnownEventStateRecord] = event_knowledge_system.observe_event(
		event, npcs
	)
	for learned_record in learned_records:
		_apply_new_event_knowledge(learned_record, event)
	_update_opportunity_from_event(event)
	_update_situations_from_event(event)
	economic_event_recorded.emit(event)


func try_communicate_at_shared_activity(speaker_id: int, listener_id: int) -> bool:
	var speaker := _find_npc_by_id(speaker_id)
	var listener := _find_npc_by_id(listener_id)
	if not _can_communicate_at_shared_activity(speaker, listener):
		return false
	var known_event_ids := event_knowledge_system.get_communicable_event_ids(
		speaker.id,
		_get_lasting_event_ids(speaker.id),
		opportunity_system.get_open_trigger_event_id()
	)
	for event_id in known_event_ids:
		var event := event_log.get_by_id(event_id)
		if event == null:
			continue
		var learned_record := event_knowledge_system.communicate_event(
			event, speaker.id, listener.id, tick_count
		)
		if learned_record == null:
			continue
		_apply_new_event_knowledge(learned_record, event)
		event_knowledge_transferred.emit(speaker.id, listener.id, event)
		_update_opportunity_from_event(event)
		return true
	return false


func _can_communicate_at_shared_activity(speaker: SimNPC, listener: SimNPC) -> bool:
	if speaker == null or listener == null or speaker.id == listener.id:
		return false
	if speaker.is_dead or listener.is_dead:
		return false
	if (
		speaker.task_state != SimNPC.TASK_STATE_WORKING
		or listener.task_state != SimNPC.TASK_STATE_WORKING
	):
		return false
	if speaker.target_id.is_empty() or speaker.target_id != listener.target_id:
		return false
	if storage_states.has(speaker.target_id):
		return false
	var speaker_action := SimulationDefinitions.get_action(speaker.current_task)
	var listener_action := SimulationDefinitions.get_action(listener.current_task)
	if (
		speaker_action == null
		or listener_action == null
		or speaker_action.target_type != SimulationIds.TARGET_ACTIVITY
		or listener_action.target_type != SimulationIds.TARGET_ACTIVITY
	):
		return false
	return (
		speaker.position.distance_squared_to(listener.position)
		<= KNOWLEDGE_COMMUNICATION_RADIUS * KNOWLEDGE_COMMUNICATION_RADIUS
	)


func _apply_new_event_knowledge(
	known_event: KnownEventStateRecord, event: EconomicEventRecord
) -> void:
	var newly_informed_ids: Array[int] = [known_event.get_knower_id()]
	var changed_relationships: Array[RelationshipStateRecord] = relationship_system.apply_event(
		event, npcs, newly_informed_ids
	)
	event_knowledge_changed.emit(known_event.get_knower_id(), event)
	for relationship in changed_relationships:
		relationship_changed.emit(relationship, event)
	_maintain_event_knowledge(false)


func _update_opportunity_from_event(event: EconomicEventRecord) -> void:
	var changed: OpportunityStateRecord = opportunity_system.consider_event(
		event,
		tick_count,
		get_pantry(),
		npcs,
		event_knowledge_system,
		resource_states,
		get_woodpile()
	)
	if changed == null:
		return
	if changed.get_status() == OpportunityStateRecord.STATUS_OPEN:
		opportunity_opened.emit(changed)
		return
	opportunity_resolved.emit(changed, event)
	_maintain_event_knowledge(false)


func _update_situations_from_event(event: EconomicEventRecord) -> void:
	var world_event := event_log.get_world_event(int(event.data["event_id"]))
	if world_event == null:
		return
	var interested_npc_id := int(event.data["actor_id"])
	if interested_npc_id < 0 or _find_npc_by_id(interested_npc_id) == null:
		_maintain_emergent_world()
		return
	var facts := _get_situation_facts(interested_npc_id)
	for evaluation in situation_system.consider_event(world_event, tick_count, facts):
		if evaluation.opened_situation_id < 0:
			continue
		var opened := situation_system.get_by_id(evaluation.opened_situation_id)
		if opened != null:
			situation_opened.emit(opened)
	_maintain_emergent_world()


func _maintain_emergent_world() -> void:
	var facts := _get_situation_facts()
	var closed := situation_system.maintain(tick_count, event_log.world_events, facts)
	var changed_commitments := commitment_lifecycle.maintain_and_record(
		tick_count, commitment_system, situation_system, event_log, facts, relationship_system
	)
	for situation in closed:
		situation_closed.emit(situation)
		var journal_entry := quest_journal_system.synchronize(situation, tick_count)
		if journal_entry != null:
			quest_journal_changed.emit(journal_entry)
	for commitment in changed_commitments:
		var outcome_fact := commitment_lifecycle.record_outcome(
			commitment, event_log, relationship_system
		)
		_share_commitment_fact_with_creditor(commitment, outcome_fact)
		commitment_changed.emit(commitment)


func _get_situation_facts(interested_npc_id: int = -1) -> Dictionary:
	var facts := {
		"pantry.food": get_pantry().get_amount(SimulationIds.RESOURCE_FOOD),
		"target_id": String(SimulationIds.STORAGE_VILLAGE_PANTRY),
	}
	if interested_npc_id >= 0:
		facts["interested_npc_id"] = interested_npc_id
	return facts


func _maintain_event_knowledge(expire_by_age: bool) -> void:
	var forgotten := event_knowledge_system.maintain_retention(
		tick_count, get_knowledge_review_interval(), _get_lasting_knowledge_records(), expire_by_age
	)
	for known_event in forgotten:
		var event := event_log.get_by_id(known_event.get_event_id())
		if event != null:
			event_knowledge_forgotten.emit(known_event.get_knower_id(), event)


func _get_lasting_knowledge_records() -> Array[KnownEventStateRecord]:
	var lasting: Array[KnownEventStateRecord] = []
	var seen := {}
	for relationship in relationship_system.get_all_sorted():
		for dimension in RelationshipStateRecord.DIMENSIONS:
			var event_id := relationship.get_last_cause_event_id(dimension)
			_append_lasting_knowledge(lasting, seen, relationship.get_observer_id(), event_id)
	var open_opportunity: OpportunityStateRecord = opportunity_system.get_open_opportunity()
	if open_opportunity != null:
		var opportunity_record := event_knowledge_system.get_record(
			open_opportunity.get_interested_npc_id(), open_opportunity.get_trigger_event_id()
		)
		if opportunity_record != null:
			var opportunity_key := (
				"%d:%d" % [opportunity_record.get_knower_id(), opportunity_record.get_event_id()]
			)
			if not seen.has(opportunity_key):
				seen[opportunity_key] = true
				lasting.append(opportunity_record)
	for situation in situation_system.get_all_sorted():
		var context := situation.get_context()
		var interested_text := String(context.get("interested_npc_id", ""))
		if interested_text.is_valid_int():
			_append_lasting_knowledge(
				lasting, seen, interested_text.to_int(), situation.get_trigger_event_id()
			)
		if quest_journal_system.get_for_situation(situation.get_situation_id()) != null:
			_append_lasting_knowledge(
				lasting, seen, SimulationIds.PLAYER_ACTOR_ID, situation.get_trigger_event_id()
			)
	return lasting


func _append_lasting_knowledge(
	lasting: Array[KnownEventStateRecord], seen: Dictionary, knower_id: int, event_id: int
) -> void:
	if event_id < 0:
		return
	var record := event_knowledge_system.get_record(knower_id, event_id)
	if record == null:
		return
	var key := "%d:%d" % [record.get_knower_id(), record.get_event_id()]
	if seen.has(key):
		return
	seen[key] = true
	lasting.append(record)


func _get_lasting_event_ids(npc_id: int) -> Array[int]:
	var event_ids: Array[int] = []
	for record in _get_lasting_knowledge_records():
		if record.get_knower_id() == npc_id:
			event_ids.append(record.get_event_id())
	event_ids.sort()
	return event_ids


func _find_npc_by_id(npc_id: int) -> SimNPC:
	var npc := _population_view.get_any(npc_id)
	if npc != null:
		return npc
	# Population growth can introduce an ID between scheduled rebuild points.
	# Rebuild once on a miss while keeping ordinary runtime callbacks O(1).
	refresh_population_index()
	return _population_view.get_any(npc_id)


static func _sort_npcs_by_id(first: SimNPC, second: SimNPC) -> bool:
	return first.id < second.id


func get_primary_relationship(npc_id: int) -> RelationshipStateRecord:
	return relationship_system.get_primary_relationship(npc_id)


func get_relationship_cause(relationship: RelationshipStateRecord) -> EconomicEventRecord:
	if relationship == null:
		return null
	return event_log.get_by_id(relationship.get_last_trust_cause_event_id())


func get_known_events(npc_id: int, max_count: int = 3) -> Array[EconomicEventRecord]:
	return event_log.get_by_ids(event_knowledge_system.get_known_event_ids(npc_id, max_count))


func get_retained_memory_events(npc_id: int, max_count: int = 4) -> Array[EconomicEventRecord]:
	var event_ids := event_knowledge_system.get_retained_event_ids(
		npc_id, _get_lasting_event_ids(npc_id), max_count
	)
	return event_log.get_by_ids(event_ids)


func get_active_opportunity() -> OpportunityStateRecord:
	return opportunity_system.get_open_opportunity()


func get_active_opportunity_helper() -> OpportunityHelperResult:
	var active := get_active_opportunity()
	if active == null:
		return null
	return opportunity_system.find_capable_helper(
		active,
		economy.get_storage(active.get_target_id()),
		npcs,
		event_knowledge_system,
		relationship_system,
		resource_states
	)


func get_active_opportunity_player_response() -> OpportunityPlayerResponseResult:
	var active := get_active_opportunity()
	if active == null:
		return null
	var helper := get_active_opportunity_helper()
	return opportunity_system.find_player_response(
		active, economy.get_storage(active.get_target_id()), resource_states, helper != null
	)


func get_latest_opportunity_for_npc(npc_id: int) -> OpportunityStateRecord:
	return opportunity_system.get_latest_for_npc(npc_id)


func get_active_situations() -> Array[SituationStateRecord]:
	return situation_system.get_active_sorted()


func get_quest_journal_entries() -> Array[QuestJournalEntryStateRecord]:
	return quest_journal_system.get_all_sorted()


func get_active_commitments() -> Array[CommitmentStateRecord]:
	return commitment_system.get_active_sorted()


func begin_player_conversation(npc_id: int) -> StringName:
	if not _active_player_conversation.is_empty():
		return &""
	var npc := _find_npc_by_id(npc_id)
	if npc == null or npc.is_dead:
		return &""
	var situation := _get_known_situation_for_npc(npc_id)
	if situation != null:
		_discover_situation_from_speaker(situation, npc_id)
	var npc_ref := WorldEntityRef.create(WorldEventRecord.ENTITY_TYPE_NPC, StringName(str(npc_id)))
	var player_ref := WorldEntityRef.create(
		WorldEventRecord.ENTITY_TYPE_PLAYER, StringName(str(SimulationIds.PLAYER_ACTOR_ID))
	)
	var context := _build_conversation_context(npc, situation)
	var conversation_id := conversation_service.begin(npc_ref, player_ref, context)
	if conversation_id.is_empty():
		return &""
	_active_player_conversation = conversation_id
	_conversation_context_by_id[conversation_id] = {
		"npc_id": npc_id,
		"situation_id": situation.get_situation_id() if situation != null else -1,
	}
	_dialogue_speed_index = speed_index
	speed_index = SPEED_LEVELS.find(1.0)
	speed_changed.emit(SPEED_LEVELS[speed_index])
	var turn := conversation_service.get_turn(conversation_id)
	_record_conversation_act(turn)
	conversation_started.emit(conversation_id, turn)
	return conversation_id


func select_player_conversation_option(
	conversation_id: StringName, option_id: StringName, expected_revision: int
) -> ConversationSelectionResult:
	if conversation_id != _active_player_conversation:
		return ConversationSelectionResult.new()
	var current_turn := conversation_service.get_turn(conversation_id)
	var selected_option := current_turn.get_option(option_id) if current_turn != null else null
	var result := conversation_service.select_option(conversation_id, option_id, expected_revision)
	if not result.was_accepted():
		return result
	if selected_option != null:
		_apply_conversation_intent(conversation_id, selected_option.get_intent_id())
	var turn := result.get_turn()
	_record_conversation_act(turn)
	conversation_turn_changed.emit(conversation_id, turn)
	if turn != null and turn.is_terminal():
		end_player_conversation(conversation_id, turn.get_revision())
	return result


func end_player_conversation(conversation_id: StringName, expected_revision: int = -1) -> bool:
	if conversation_id != _active_player_conversation:
		return false
	if not conversation_service.end(conversation_id, expected_revision):
		return false
	_active_player_conversation = &""
	_conversation_context_by_id.erase(conversation_id)
	if _dialogue_speed_index >= 0:
		speed_index = clampi(_dialogue_speed_index, 0, SPEED_LEVELS.size() - 1)
		_dialogue_speed_index = -1
		speed_changed.emit(SPEED_LEVELS[speed_index])
	conversation_ended.emit(conversation_id)
	return true


func is_dialogue_active() -> bool:
	return not _active_player_conversation.is_empty()


func _get_known_situation_for_npc(npc_id: int) -> SituationStateRecord:
	var known: Array[SituationStateRecord] = []
	for situation in situation_system.get_all_sorted():
		var context := situation.get_context()
		if String(context.get("interested_npc_id", "")) != str(npc_id):
			continue
		if event_knowledge_system.knows_event(npc_id, situation.get_trigger_event_id()):
			known.append(situation)
	if known.is_empty():
		return null
	known.sort_custom(
		func(first: SituationStateRecord, second: SituationStateRecord) -> bool:
			if first.get_created_tick() != second.get_created_tick():
				return first.get_created_tick() > second.get_created_tick()
			return first.get_situation_id() > second.get_situation_id()
	)
	return known[0]


func _discover_situation_from_speaker(situation: SituationStateRecord, npc_id: int) -> void:
	var event := event_log.get_by_id(situation.get_trigger_event_id())
	if event == null:
		return
	if not event_knowledge_system.knows_event(
		SimulationIds.PLAYER_ACTOR_ID, event.data["event_id"]
	):
		var learned := event_knowledge_system.communicate_event_to_player(event, npc_id, tick_count)
		if learned != null:
			_apply_new_event_knowledge(learned, event)
			event_knowledge_transferred.emit(npc_id, SimulationIds.PLAYER_ACTOR_ID, event)
		event_knowledge_system.pin_event(SimulationIds.PLAYER_ACTOR_ID, int(event.data["event_id"]))
	var existing := quest_journal_system.get_for_situation(situation.get_situation_id())
	if existing == null and situation.is_active():
		var definition := situation_system.get_definition(situation.get_definition_id())
		var entry := quest_journal_system.add_situation(situation, definition, &"", tick_count)
		if entry != null:
			quest_journal_changed.emit(entry)


func _build_conversation_context(npc: SimNPC, situation: SituationStateRecord) -> Dictionary:
	var topics: Array[StringName] = []
	var trace: Array[StringName] = [&"speaker_available"]
	var options: Dictionary = {}
	var initial_intent := ConversationIntentIds.GREET
	if situation != null:
		var definition := situation_system.get_definition(situation.get_definition_id())
		topics = definition.dialogue_topic_ids.duplicate()
		trace.append(&"speaker_knows_trigger_fact")
		trace.append(&"listener_learned_trigger_fact")
		trace.append(StringName("evidence_event_%d" % situation.get_trigger_event_id()))
		if npc.hunger >= 60.0:
			trace.append(&"speaker_hungry")
		var relationship := relationship_system.get_relationship(
			npc.id, SimulationIds.PLAYER_ACTOR_ID
		)
		if relationship == null:
			trace.append(&"relationship_unfamiliar")
		elif relationship.get_familiarity() >= 0.5:
			trace.append(&"relationship_familiar")
		else:
			trace.append(&"relationship_known")
		var outcome := _get_latest_commitment_for_npc(npc.id, situation.get_situation_id())
		if outcome != null and not outcome.is_active():
			trace.append(StringName("commitment_%s" % outcome.get_status()))
			if outcome.get_cause_event_id() >= 0:
				trace.append(StringName("outcome_event_%d" % outcome.get_cause_event_id()))
			match outcome.get_status():
				CommitmentStateRecord.STATUS_FULFILLED:
					initial_intent = ConversationIntentIds.THANK
				CommitmentStateRecord.STATUS_BROKEN:
					initial_intent = ConversationIntentIds.REPROACH
				CommitmentStateRecord.STATUS_SUPERSEDED:
					initial_intent = ConversationIntentIds.ACKNOWLEDGE_SUPERSESSION
		options[ConversationIntentIds.GREET] = [
			ConversationIntentIds.ASK_WELLBEING,
			ConversationIntentIds.ASK_WHAT_HAPPENED,
			ConversationIntentIds.OFFER_HELP,
			ConversationIntentIds.DECLINE,
			ConversationIntentIds.ASK_WHO_ELSE,
			ConversationIntentIds.GOODBYE,
		]
	return {
		"conversation_key": &"jajce_npc_%d" % npc.id,
		"initial_intent_id": initial_intent,
		"topic_ids": topics,
		"option_intent_ids": options,
		"reason_trace": trace,
	}


func _get_latest_commitment_for_npc(npc_id: int, situation_id: int = -1) -> CommitmentStateRecord:
	var latest: CommitmentStateRecord
	for commitment in commitment_system.get_all_sorted():
		var creditor := commitment.get_creditor()
		if (
			creditor.get_entity_type() != WorldEventRecord.ENTITY_TYPE_NPC
			or String(creditor.get_entity_id()) != str(npc_id)
			or (situation_id >= 0 and commitment.get_situation_id() != situation_id)
		):
			continue
		if latest == null or commitment.get_commitment_id() > latest.get_commitment_id():
			latest = commitment
	return latest


func _apply_conversation_intent(conversation_id: StringName, intent_id: StringName) -> void:
	if intent_id not in [ConversationIntentIds.OFFER_HELP, ConversationIntentIds.ACCEPT]:
		return
	var context: Dictionary = _conversation_context_by_id.get(conversation_id, {})
	var situation := situation_system.get_by_id(int(context.get("situation_id", -1)))
	var npc_id := int(context.get("npc_id", -1))
	if situation == null or npc_id < 0:
		return
	var definition := situation_system.get_definition(situation.get_definition_id())
	var alternative_id := SituationSystem.ALTERNATIVE_RESTOCK
	var entry := quest_journal_system.get_for_situation(situation.get_situation_id())
	if entry != null and entry.get_selected_alternative_id().is_empty():
		quest_journal_system.select_alternative(situation, definition, alternative_id)
		quest_journal_changed.emit(entry)
	var player_ref := WorldEntityRef.create(
		WorldEventRecord.ENTITY_TYPE_PLAYER, StringName(str(SimulationIds.PLAYER_ACTOR_ID))
	)
	var npc_ref := WorldEntityRef.create(WorldEventRecord.ENTITY_TYPE_NPC, StringName(str(npc_id)))
	var commitment := commitment_system.create_for_alternative(
		situation, definition, alternative_id, player_ref, npc_ref, tick_count, tick_count + 20
	)
	if commitment != null:
		var acceptance_fact := commitment_lifecycle.record_acceptance(
			commitment, event_log, relationship_system
		)
		_share_commitment_fact_with_creditor(commitment, acceptance_fact)
		commitment_changed.emit(commitment)


func _share_commitment_fact_with_creditor(
	commitment: CommitmentStateRecord, fact: EconomicEventRecord
) -> void:
	if commitment == null or fact == null:
		return
	var creditor := commitment.get_creditor()
	if (
		creditor.get_entity_type()
		not in [WorldEventRecord.ENTITY_TYPE_NPC, WorldEventRecord.ENTITY_TYPE_PLAYER]
	):
		return
	var creditor_text := String(creditor.get_entity_id())
	if not creditor_text.is_valid_int():
		return
	var debtor := commitment.get_debtor()
	var debtor_text := String(debtor.get_entity_id())
	if not debtor_text.is_valid_int():
		return
	var shared := event_knowledge_system.communicate_event(
		fact, debtor_text.to_int(), creditor_text.to_int(), tick_count
	)
	if shared != null:
		_apply_new_event_knowledge(shared, fact)


func _record_conversation_act(turn: ConversationTurn) -> void:
	if turn == null or turn.get_act() == null:
		return
	var act := turn.get_act()
	var record := ConversationActStateRecord.create(
		_next_conversation_act_id,
		tick_count,
		act.get_speaker(),
		act.get_listener(),
		act.get_intent_id(),
		act.get_causal_topic_ids()
	)
	if record == null:
		return
	conversation_history.append(record)
	_next_conversation_act_id += 1
	_prune_conversation_history(record)


func _prune_conversation_history(latest: ConversationActStateRecord) -> void:
	var latest_pair := _conversation_pair_key(latest)
	var pair_count := 0
	for index in range(conversation_history.size() - 1, -1, -1):
		if _conversation_pair_key(conversation_history[index]) != latest_pair:
			continue
		pair_count += 1
		if pair_count > MAX_CONVERSATION_ACTS_PER_PAIR:
			conversation_history.remove_at(index)
	while conversation_history.size() > MAX_CONVERSATION_HISTORY:
		conversation_history.pop_front()


func _conversation_pair_key(act: ConversationActStateRecord) -> String:
	var keys := [act.get_speaker().index_key(), act.get_listener().index_key()]
	keys.sort()
	return "%s|%s" % keys


func get_opportunity_trigger_event(opportunity: OpportunityStateRecord) -> EconomicEventRecord:
	return event_log.get_by_id(opportunity.get_trigger_event_id() if opportunity != null else -1)


func get_opportunity_resolution_event(opportunity: OpportunityStateRecord) -> EconomicEventRecord:
	return event_log.get_by_id(opportunity.get_resolution_event_id() if opportunity != null else -1)


func npc_knows_event(npc_id: int, event_id: int) -> bool:
	return event_knowledge_system.knows_event(npc_id, event_id)


func get_known_event_record(npc_id: int, event_id: int) -> KnownEventStateRecord:
	return event_knowledge_system.get_record(npc_id, event_id)


func is_known_event_lasting(npc_id: int, event_id: int) -> bool:
	return event_id in _get_lasting_event_ids(npc_id)


func get_memory_summary(npc_id: int) -> Dictionary:
	var total := event_knowledge_system.get_known_event_ids(npc_id, 0).size()
	var lasting := _get_lasting_event_ids(npc_id).size()
	return {"lasting": lasting, "recent": maxi(total - lasting, 0)}


func get_knowledge_review_interval() -> int:
	var active_cycle_duration := (
		clock.cycle_duration_seconds if clock != null else cycle_duration_seconds
	)
	var active_tick_interval := clock.tick_interval if clock != null else tick_interval
	return maxi(roundi(active_cycle_duration / maxf(active_tick_interval, 0.0001)), 1)


func get_current_speed() -> String:
	return "%.2fx" % SPEED_LEVELS[speed_index]


func get_resource_rates() -> Dictionary:
	return event_log.get_consumption_rates(tick_count)


func get_pantry() -> StorageStateRecord:
	return economy.get_pantry()


func get_woodpile() -> StorageStateRecord:
	return economy.get_woodpile()


func register_loaded_storage_nodes() -> void:
	for candidate in StorageNode.get_all():
		var node := candidate as StorageNode
		register_storage_node(node)


func register_storage_node(node: StorageNode) -> bool:
	if node == null or node.storage_id.is_empty():
		return false
	var storage_state := storage_states.get(node.storage_id) as StorageStateRecord
	if storage_state == null:
		push_error(
			(
				"SimulationManager: StorageNode '%s' has no authoritative StorageStateRecord"
				% node.storage_id
			)
		)
		return false
	return node.bind_state(storage_state)


func _on_economy_inventory_changed(npc: SimNPC, item_id: StringName, amount: float) -> void:
	npc_inventory_changed.emit(npc, item_id, amount)


func feed_animal(animal_id: StringName, actor_id: int = -1) -> bool:
	var succeeded := animal_care.feed(animal_id, actor_id, npcs, tick_count)
	if succeeded:
		village_changed.emit(village)
	return succeeded


func register_loaded_resource_nodes() -> void:
	for node in ResourceNode.get_all():
		register_resource_node(node)


func register_resource_node(node: ResourceNode) -> bool:
	if node == null or node.node_id.is_empty():
		return false
	var action_definition := SimulationDefinitions.get_action(node.action_id)
	if (
		action_definition == null
		or action_definition.target_type != SimulationIds.TARGET_RESOURCE
		or action_definition.resource_action_id != node.action_id
		or node.resource_id not in [SimulationIds.RESOURCE_FOOD, SimulationIds.RESOURCE_WOOD]
	):
		push_error(
			(
				"SimulationManager: ResourceNode '%s' has invalid action/resource IDs '%s'/'%s'"
				% [node.node_id, node.action_id, node.resource_id]
			)
		)
		return false
	var resource_state := get_resource_state(node.node_id)
	if resource_state == null:
		resource_state = ResourceStateRecord.create_from_node(node)
		resource_states[node.node_id] = resource_state
	elif not resource_state.apply_definition(node):
		push_error("SimulationManager: ResourceNode definition mismatch for '%s'" % node.node_id)
		return false
	return node.bind_state(resource_state)


func get_resource_state(node_id: StringName) -> ResourceStateRecord:
	return resource_states.get(node_id) as ResourceStateRecord


func reserve_resource(node_id: StringName, agent_id: int) -> bool:
	var resource_state := get_resource_state(node_id)
	return resource_state != null and resource_state.reserve(agent_id)


func release_resource(node_id: StringName, agent_id: int) -> void:
	var resource_state := get_resource_state(node_id)
	if resource_state != null:
		resource_state.release(agent_id)


func find_resource_node_for_player(from_position: Vector3, max_distance: float) -> ResourceNode:
	var best: ResourceNode
	var best_distance := max_distance * max_distance
	var candidates: Array[ResourceNode]
	var query_mode := &"registry"
	if (
		active_world_adapter != null
		and active_world_adapter.has_method("get_resource_nodes_in_radius")
	):
		candidates = active_world_adapter.get_resource_nodes_in_radius(from_position, max_distance)
		query_mode = &"spatial"
	else:
		candidates = ResourceNode.get_all()
	last_player_resource_query_stats = {
		"mode": query_mode,
		"candidate_count": candidates.size(),
	}
	for node in candidates:
		var resource_state := get_resource_state(node.node_id)
		if (
			resource_state == null
			or not resource_state.can_player_use_resource()
			or not resource_state.can_extract()
		):
			continue
		var distance := from_position.distance_squared_to(node.interaction_point.global_position)
		if distance <= best_distance:
			best_distance = distance
			best = node
	return best


func harvest_resource_node(node: ResourceNode) -> float:
	if node == null:
		return 0.0
	var resource_state := get_resource_state(node.node_id)
	if resource_state == null or not resource_state.can_player_use_resource():
		return 0.0
	var extracted := resource_state.extract(
		resource_state.get_yield_per_action() * _gather_yield_multiplier()
	)
	if extracted <= 0.0:
		return 0.0
	var resource_id := resource_state.get_resource_id()
	player_system.add_carried(resource_id, extracted)

	var event_position := (
		node.interaction_point.global_position
		if node.interaction_point != null
		else node.global_position
	)
	_record_economic_event_at(
		SimulationIds.EVENT_RESOURCE_EXTRACTED,
		SimulationIds.PLAYER_ACTOR_ID,
		resource_state.get_node_id(),
		SimulationIds.PLAYER_INVENTORY_ID,
		resource_id,
		extracted,
		event_position
	)
	if resource_state.get_amount_remaining() <= 0.0:
		_record_narrative_event_at(
			SimulationIds.EVENT_RESOURCE_DEPLETED,
			SimulationIds.PLAYER_ACTOR_ID,
			resource_state.get_node_id(),
			"",
			event_position
		)
	village_changed.emit(village)

	if debug_logs:
		print(
			"[SimulationManager] Player carried ",
			extracted,
			" ",
			resource_id,
			" from ",
			resource_state.get_node_id()
		)

	return extracted


func advance_player_needs() -> void:
	player_system.advance_needs(village.food_modifier)
	player_system.player_state.advance_health()
	_sync_player_combatant()


func _sync_player_combatant() -> void:
	conflict_system.set_player_health(
		player_system.player_state.get_health(), player_system.player_state.is_downed()
	)


func _on_player_damaged(amount: float) -> void:
	player_system.player_state.take_damage(amount)
	_sync_player_combatant()


func update_player_combatant(position: Vector3) -> void:
	conflict_system.set_player_combatant_position(position)


func player_is_downed() -> bool:
	return player_system.player_state.is_downed()


func get_player_health() -> float:
	return player_system.player_state.get_health()


func get_season() -> StringName:
	var ticks_per_day := maxi(get_knowledge_review_interval(), 1)
	var season_day := int(clock.elapsed_ticks / ticks_per_day)
	return SEASON_COLD if season_day % SEASON_DAYS >= COLD_DAYS else SEASON_WARM


func is_cold_season() -> bool:
	return get_season() == SEASON_COLD


func _gather_yield_multiplier() -> float:
	return 0.5 if is_cold_season() else 1.0


func _advance_resource_regrowth() -> void:
	if is_cold_season():
		return
	for resource_id in resource_states:
		var resource_state := resource_states[resource_id] as ResourceStateRecord
		resource_state.regrow()


func get_player_state() -> PlayerStateRecord:
	return player_system.player_state


func deposit_player_inventory(item_id: StringName) -> float:
	var storage := economy.get_storage_for_resource(item_id)
	var storage_node := (
		StorageNode.get_by_id(storage.get_storage_id()) as StorageNode if storage != null else null
	)
	var deposited := player_system.deposit(
		item_id, storage_node.get_interaction_position() if storage_node != null else Vector3.ZERO
	)
	village_changed.emit(village)
	return deposited


func eat_player_food() -> bool:
	var succeeded := player_system.eat(Vector3.ZERO)
	village_changed.emit(village)
	return succeeded


func _record_player_event_at(
	event_type: StringName,
	source_id: StringName,
	destination_id: StringName,
	item_id: StringName,
	amount: float,
	world_position: Vector3
) -> void:
	_record_economic_event_at(
		event_type,
		SimulationIds.PLAYER_ACTOR_ID,
		source_id,
		destination_id,
		item_id,
		amount,
		world_position
	)


func add_safety(amount: float) -> void:
	village.apply_metric_delta(&"safety", amount)
	village_changed.emit(village)


func add_knowledge(amount: float) -> void:
	village.apply_metric_delta(&"knowledge", amount)
	village_changed.emit(village)


func get_starving_count() -> int:
	return _population_view.starving_count()


func get_state_checksum() -> String:
	return create_state_record().to_json().sha256_text()


func get_latest_decision(npc_id: int) -> ActionSelectionResult:
	return latest_decisions.get(npc_id)


func create_state_record() -> SimulationStateRecord:
	var record := SimulationStateRecord.new()
	var event_scope := event_log.get_scope()
	var wander_streams: Array[Dictionary] = []
	var sorted_npc_ids: Array = wander_random_sources.keys()
	sorted_npc_ids.sort()
	for npc_id in sorted_npc_ids:
		var source: RandomNumberGenerator = wander_random_sources[npc_id]
		wander_streams.append(
			{"npc_id": int(npc_id), "seed": str(source.seed), "state": str(source.state)}
		)
	record.simulation = {
		"seed": simulation_seed,
		"tick_interval": tick_interval,
		"tick_count": tick_count,
		"clock_accumulator": clock.accumulator,
		"clock_elapsed_ticks": clock.elapsed_ticks,
		"wander_random_streams": wander_streams,
		"next_event_id": next_event_id,
		"next_opportunity_id": opportunity_system.next_opportunity_id,
		"next_situation_id": situation_system.get_next_situation_id(),
		"next_journal_entry_id": quest_journal_system.get_next_entry_id(),
		"next_commitment_id": commitment_system.get_next_commitment_id(),
		"next_conversation_act_id": _next_conversation_act_id,
		"world_id": String(event_scope["world_id"]),
		"location_id": String(event_scope["location_id"]),
		"cycle_duration_seconds": clock.cycle_duration_seconds
	}
	record.village = VillageStateRecord.capture(village)
	for npc in npcs:
		record.npcs.append(NPCStateRecord.capture(npc))
	animal_care.append_state_records(record)
	var sorted_resource_ids: Array = resource_states.keys()
	sorted_resource_ids.sort()
	for resource_id in sorted_resource_ids:
		var resource_state: ResourceStateRecord = resource_states[resource_id]
		record.resources.append(resource_state)
	var sorted_storage_ids: Array = storage_states.keys()
	sorted_storage_ids.sort()
	for storage_id in sorted_storage_ids:
		var storage_state: StorageStateRecord = storage_states[storage_id]
		record.storages.append(storage_state)
	for event in economic_events:
		record.economic_events.append(event)
	for relationship in relationship_system.get_all_sorted():
		record.relationships.append(relationship)
	for known_event in event_knowledge_system.get_all_sorted():
		record.event_knowledge.append(known_event)
	for opportunity in opportunity_system.get_all_sorted():
		record.opportunities.append(opportunity)
	for situation in situation_system.get_all_sorted():
		record.situations.append(situation)
	for journal_entry in quest_journal_system.get_all_sorted():
		record.quest_journal.append(journal_entry)
	for commitment in commitment_system.get_all_sorted():
		record.commitments.append(commitment)
	for conversation_act in conversation_history:
		record.conversation_history.append(conversation_act)
	record.player = player_system.player_state
	conflict_system.append_state_records(record)
	return record


func serialize_state() -> String:
	return create_state_record().to_json()


func restore_state_from_json(json_text: String) -> bool:
	var record := SimulationStateRecord.from_json(json_text)
	if record == null:
		push_error("SimulationManager: refused invalid or unsupported simulation state")
		return false
	return restore_state(record)


func restore_state(record: SimulationStateRecord) -> bool:
	if record == null or not _saved_scope_matches_active_adapter(record):
		return false
	simulation_seed = int(record.simulation["seed"])
	tick_interval = float(record.simulation["tick_interval"])
	tick_count = int(record.simulation["tick_count"])
	clock = SimulationClock.new(tick_interval)
	clock.accumulator = float(record.simulation["clock_accumulator"])
	clock.elapsed_ticks = int(record.simulation["clock_elapsed_ticks"])
	clock.cycle_duration_seconds = float(record.simulation.get("cycle_duration_seconds", 240.0))
	village = record.village.restore(debug_logs)
	economy.configure(village, debug_logs)
	economy.restore_storage(record.storages)
	# Priorities and modifiers are deterministic derived state, not save payload.
	# Rebuild them before the next decision so save/load cannot change outcomes.
	village.update_modifiers()
	village.update_priorities()
	if not event_log.restore(
		record.economic_events,
		int(record.simulation["next_event_id"]),
		StringName(record.simulation["world_id"]),
		StringName(record.simulation["location_id"])
	):
		return false
	latest_decisions.clear()
	npcs.clear()
	for npc_record in record.npcs:
		npcs.append(npc_record.restore(debug_logs))
	refresh_population_index()
	if not _configure_interaction_services():
		return false
	relationship_system.restore(record.relationships)
	event_knowledge_system.restore(record.event_knowledge)
	opportunity_system.restore(record.opportunities, int(record.simulation["next_opportunity_id"]))
	situation_system = SituationSystem.create_default()
	if not situation_system.restore(record.situations, int(record.simulation["next_situation_id"])):
		return false
	if record.situations.is_empty():
		var migratable_opportunities: Array[OpportunityStateRecord] = []
		for opportunity in record.opportunities:
			if opportunity.get_opportunity_type() == SimulationIds.OPPORTUNITY_RESTOCK_EMPTY_PANTRY:
				migratable_opportunities.append(opportunity)
		if not situation_system.import_opportunities(migratable_opportunities).is_empty():
			return false
	quest_journal_system = QuestJournalSystem.new()
	if not quest_journal_system.restore(
		record.quest_journal, int(record.simulation["next_journal_entry_id"])
	):
		return false
	commitment_system = SocialCommitmentSystem.new()
	if not commitment_system.restore(
		record.commitments, int(record.simulation["next_commitment_id"])
	):
		return false
	commitment_lifecycle = CommitmentLifecycleService.new()
	conversation_service = ConversationService.new()
	conversation_history.assign(record.conversation_history)
	_next_conversation_act_id = int(record.simulation["next_conversation_act_id"])
	_active_player_conversation = &""
	_conversation_context_by_id.clear()
	_dialogue_speed_index = -1
	_maintain_event_knowledge(tick_count % get_knowledge_review_interval() == 0)
	wander_random_sources.clear()
	var wander_streams: Array = record.simulation["wander_random_streams"]
	for stream_data in wander_streams:
		var source := RandomNumberGenerator.new()
		source.seed = String(stream_data["seed"]).to_int()
		source.state = String(stream_data["state"]).to_int()
		wander_random_sources[int(stream_data["npc_id"])] = source
	resource_states.clear()
	for resource_record in record.resources:
		resource_states[resource_record.get_node_id()] = resource_record
	register_loaded_resource_nodes()
	animal_care.restore_state_records(record.animals, tick_count)
	if record.player != null:
		player_system.player_state = record.player
	conflict_system.restore_state_records(record.combatants, record.factions, tick_count)
	conflict_system.register_npc_combatants(npcs)
	conflict_system.configure(economy, tick_interval)
	_sync_player_combatant()
	village_changed.emit(village)
	state_restored.emit()
	return true


func _saved_scope_matches_active_adapter(record: SimulationStateRecord) -> bool:
	if active_world_adapter == null or not active_world_adapter.has_method("get_context_identity"):
		return true
	var identity: Dictionary = active_world_adapter.call("get_context_identity")
	return (
		(
			StringName(identity.get("world_id", &""))
			== StringName(record.simulation.get("world_id", &""))
		)
		and (
			StringName(identity.get("location_id", &""))
			== StringName(record.simulation.get("location_id", &""))
		)
	)