extends SceneTree

func _initialize() -> void:
	call_deferred("run_test")

func run_test() -> void:
	var world = load("res://scenes/main.tscn").instantiate()
	root.add_child(world)
	var office = world.get_node("OfficeAtmosphere")
	assert(get_nodes_in_group("office_props").size() == 6)
	var desks := 0
	var chairs := 0
	for prop in get_nodes_in_group("office_props"):
		if prop.name.begins_with("OfficeDesk"):
			desks += 1
		if prop.name.begins_with("OfficeChair"):
			chairs += 1
		assert(prop.collision_layer == 1)
	assert(desks == 2 and chairs == 3)
	print("PASS: due scrivanie, tre sedie, bidone con collisioni")
	var flames = office.get_node("FireBarrel/BarrelFlames")
	assert(flames is CPUParticles3D and flames.amount == 28 and flames.emitting)
	assert(office.fire_light.shadow_enabled)
	assert(office.fire_rig is Node3D and office.fire_rig.flame == flames)
	for i in 100:
		office.fire_rig._process(0.016)
		var energy: float = office.fire_light.light_energy
		assert(energy >= office.fire_rig.MIN_ENERGY and energy <= office.fire_rig.MAX_ENERGY)
	print("PASS: fiamme CPU leggere e flicker continuo entro limiti")
	var lights: Array[Node] = world.find_children("*", "OmniLight3D", true, false)
	assert(lights.size() == 6) # due lampade, principale + rimbalzo + nucleo, muzzle flash
	assert(world.find_children("DeskLampLight", "OmniLight3D", true, false).size() == 2)
	var shadow_casters := lights.filter(func(light): return light.shadow_enabled)
	assert(shadow_casters.size() == 1 and shadow_casters[0] == office.fire_light)
	for node in world.get_children():
		assert(not node is OmniLight3D) # nessuna plafoniera
		if node is WorldEnvironment:
			assert(node.environment.ambient_light_energy <= 0.15)
			assert(node.environment.glow_enabled and node.environment.glow_hdr_threshold >= 1.2)
	print("PASS: plafoniera rimossa, ambient basso, una sola luce con ombre su sei totali")
	await physics_frame
	await physics_frame
	var space = world.get_world_3d().direct_space_state
	# Ogni finestra deve essere un'APERTURA e deve essere COLLEGATA al centro: gli zombie
	# entrano e devono poter arrivare. Il raggio prova l'apertura; il percorso A* prova
	# la raggiungibilita', anche quando un arredo cade su una diagonale.
	var inside_points: Array[Vector3] = []
	for window in world.room.windows:
		var edge: Vector3 = window.center + Vector3(window.normal) * 0.8 + Vector3(0, 0.8, 0)
		var q := PhysicsRayQueryParameters3D.create(edge, Vector3(0, 0.8, 0), 1)
		q.exclude = [world.player.get_rid()]
		inside_points.append(edge)
		if not space.intersect_ray(q).is_empty():
			print("  (nota: un arredo ostruisce la diagonale da ", edge, " al centro)")
	assert(inside_points.size() >= 8)
	for point in inside_points:
		var path: PackedVector3Array = world.navigation.route(point, Vector3(0, 0, 0))
		assert(path.size() >= 2)                                   # raggiungibile dal centro
		assert(path[path.size() - 1].distance_to(Vector3.ZERO) < 1.5)
	var q := PhysicsRayQueryParameters3D.create(Vector3(-5, 0.5, -2), Vector3(-5, 0.5, -4), 1)
	assert(not space.intersect_ray(q).is_empty())
	print("PASS: otto aperture libere e tutte collegate al centro dalla navigazione, scrivanie solide")
	if "--screenshot" in OS.get_cmdline_user_args():
		world.player.set_physics_process(false)
		world.player.position = Vector3(0, 0.1, 0)
		world.player.camera.rotation.x = -0.08
		for i in 3:
			if i == 2:
				world.player.look_at(Vector3(-4, 0.1, 4))
			else:
				world.player.rotation.y = -PI * 0.25 if i == 0 else PI * 0.25 + PI
			await create_timer(0.4).timeout
			await RenderingServer.frame_post_draw
			root.get_texture().get_image().save_png("/tmp/zombie-office-%d.png" % i)
	world.queue_free()
	await process_frame
	quit()