extends SceneTree

## LEVEL 0's horror layer, verified headlessly: does the entity wake only there, does it
## FREEZE while watched and CLOSE while not (the Slender rule), does noise pull it (the
## xenomorph rule), does the loop wrap you, and does all of it shut down on the way out.

func _initialize() -> void:
	var main: Node = (load("res://main.tscn") as PackedScene).instantiate()
	get_root().add_child(main)
	await process_frame
	main._load_level("backrooms")
	for i in 8:
		await physics_frame

	var br = main.get("_backrooms")
	var ent = br.entity
	var player = main.get("_player")
	var cam = main.get("_cam")
	print("active        : ", br.active, "   entity awake: ", ent.is_awake())
	print("totems hung   : ", br._totems.size())

	# --- SLENDER RULE: frozen while watched ---
	# It's a maze, so a random pair of points usually has a wall between them and the
	# line-of-sight test correctly reports "not seen". Hunt for a clear sightline first,
	# or this tests nothing.
	player.global_position = Vector3(0, 0, 0)
	player.rotation.y = 0.0                      # facing -Z
	var placed := false
	for d in [3.0, 4.0, 5.0, 6.0, 8.0, 10.0]:
		ent.global_position = Vector3(0, 0, -d)
		await physics_frame
		await physics_frame
		if ent.seen_now:
			print("clear sightline at %.0f m" % d)
			placed = true
			break
	if not placed:
		print("NO clear sightline found — maze too dense at this seed")
	for i in 3:
		await physics_frame
	var before = ent.global_position
	for i in 40:
		await physics_frame
	var moved_watched = before.distance_to(ent.global_position)
	print("watched       : moved %.2f m   seen=%s   static=%.2f" % [
		moved_watched, ent.seen_now, ent.static_level])

	# --- and closes when you look away ---
	player.rotation.y = PI                       # now facing +Z, away from it
	ent.state = Entity.S.STALKING
	before = ent.global_position
	for i in 40:
		await physics_frame
	print("looking away  : moved %.2f m   seen=%s" % [
		before.distance_to(ent.global_position), ent.seen_now])

	# --- XENOMORPH RULE: it walks toward noise ---
	ent.global_position = Vector3(14, 0, 14)
	ent.state = Entity.S.STALKING
	ent.noise_heat = 0.0
	player.rotation.y = 0.0                      # look AWAY from it, at -Z
	var noise := Vector3(-14, 0, -14)
	br.on_noise(noise, 2.0)
	var d0 = ent.global_position.distance_to(noise)
	for i in 60:
		await physics_frame
	var d1 = ent.global_position.distance_to(noise)
	print("noise at %s : closed %.2f m toward it" % [noise, d0 - d1])

	# --- BLAIR WITCH: the loop ---
	var loops0 = br.loops
	player.global_position = Vector3(0, 0, 18.6)  # right at the boundary
	for i in 6:
		await physics_frame
	print("wrap          : loops %d -> %d   player now z=%.1f" % [
		loops0, br.loops, player.global_position.z])

	# --- the scare costs you something ---
	var dust = main.get("_dust")
	var rage = main.get("_rage")
	var lungs0 = dust.inhaled
	var rage0 = rage.value
	ent._cd = 0.0
	ent._catch()
	await process_frame
	print("caught        : lungs %.2f -> %.2f   rage %.2f -> %.2f   touched=%d" % [
		lungs0, dust.inhaled, rage0, rage.value, br.caught])

	# --- and none of it follows you to the office ---
	main._load_level("scranton")
	for i in 6:
		await physics_frame
	print("back at office: horror active=%s  entity awake=%s  dust active=%s" % [
		br.active, ent.is_awake(), dust.active])
	quit()