extends SceneTree
## Crowd-presentation smoke: starts a shift, waits for bystanders to settle, then
## checks that an aggressive crowd event makes idle NPCs stop and watch, and that
## panic sends them away from the door.
##
## Usage:
##   godot --headless --path . --script res://src/test/smoke_crowd.gd
## Exit code 0 = pass, 1 = failure.

const MAX_FRAMES := 2400

var frame := 0
var gm: Node = null
var started := false
var phase := 0
var failures: Array[String] = []

func _initialize() -> void:
	root.size = Vector2i(1280, 720)
	root.add_child(load("res://scenes/main.tscn").instantiate())

func _process(_delta: float) -> bool:
	frame += 1
	if gm == null:
		gm = root.find_child("GameManager", true, false)
		return false
	if not started:
		gm.call("_on_venue_selected", "hollywood_building")
		started = true
		return false
	if frame > MAX_FRAMES:
		_fail("timeout before crowd reactions were observed")
		return true
	match phase:
		0:
			if frame < 300:
				return false
			# Wait until at least one settled bystander is away from the door (someone
			# waiting at the entrance is being dealt with and must not rubberneck).
			if _bystander_count() == 0:
				return false
			gm.coordinator.crowd.apply_event("aggressive_behavior")
			var watching := _count_mode("watch")
			_check(watching > 0, "aggressive behavior makes idle NPCs watch (%d watching)" % watching)
			phase = 1
		1:
			if frame < 320:
				return false
			var door: Vector3 = gm.selected_scenario._location_or_default("entrance", Vector3(0, 0.5, 1.2))
			for npc in gm.npcs:
				if is_instance_valid(npc) and npc.has_method("reaction_is_active"):
					pass
			gm.coordinator.crowd.apply_event("visible_weapon")
			gm.coordinator.crowd.apply_event("aggressive_behavior")
			gm.coordinator.crowd.apply_event("aggressive_behavior")
			gm.coordinator.crowd.apply_event("emergency_responder")
			_check(gm.coordinator.crowd.should_flee(), "stacked alarms panic the crowd")
			var fleeing := _count_mode("flee")
			_check(fleeing > 0, "panic sends NPCs away from the door (%d fleeing)" % fleeing)
			var away_ok := true
			for npc in gm.npcs:
				if not is_instance_valid(npc) or npc.reaction_mode != "flee":
					continue
				if (npc.target_position - door).length() <= (npc.global_position - door).length():
					away_ok = false
			_check(away_ok, "every fleeing NPC targets a point farther from the door")
			phase = 2
		_:
			_finish()
			return true
	return false

func _bystander_count() -> int:
	var n := 0
	for npc in gm.npcs:
		if not is_instance_valid(npc) or not npc.arrived:
			continue
		if npc.awaiting_interaction and npc.global_position.distance_to(npc.door_position) < 3.0:
			continue
		n += 1
	return n

func _settled_count() -> int:
	var n := 0
	for npc in gm.npcs:
		if is_instance_valid(npc) and npc.arrived:
			n += 1
	return n

func _count_mode(mode: String) -> int:
	var n := 0
	for npc in gm.npcs:
		if is_instance_valid(npc) and npc.reaction_mode == mode:
			n += 1
	return n

func _check(condition: bool, message: String) -> void:
	if condition:
		print("ok: " + message)
	else:
		_fail(message)

func _fail(message: String) -> void:
	failures.append(message)
	_finish()

func _finish() -> void:
	if failures.is_empty():
		print("SMOKE OK: crowd rubberneck and panic flee")
		quit(0)
	else:
		for message in failures:
			printerr("SMOKE FAIL: " + message)
		quit(1)