extends SceneTree
const RoomScript = preload("res://scripts/room.gd")

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

func run_test() -> void:
	var world = load("res://scenes/main.tscn").instantiate()
	root.add_child(world)
	var surfaces = get_nodes_in_group("office_surfaces")
	# Muri: per ogni muro (aperture+1) pezzi pieni, piu' davanzale e architrave per
	# ogni apertura; poi il soffitto. Il numero si ricava dalle costanti della stanza.
	var per_wall: int = (RoomScript.WINDOWS_PER_WALL + 1) + 2 * RoomScript.WINDOWS_PER_WALL
	assert(surfaces.size() == 4 * per_wall + 1) # quattro muri + soffitto
	for surface in surfaces:
		assert(surface.mesh is ArrayMesh)
		var mat = surface.mesh.surface_get_material(0)
		assert(not mat.uv1_triplanar)
		assert(mat.albedo_texture.resource_path.contains("/office/"))
		var arrays = surface.mesh.surface_get_arrays(0)
		assert(arrays[Mesh.ARRAY_TEX_UV].size() == arrays[Mesh.ARRAY_VERTEX].size())
	print("PASS: %d superfici con UV esplicite e texture office originali (%d per muro)" % [surfaces.size(), per_wall])
	var north := Vector3(0, 2.5, -9.15)
	var low := Vector3(0, 0.75, -9.15)
	var high := Vector3(0, 4.25, -9.15)
	for y in [0.0, 1.5, 2.5, 3.5, 5.0]:
		var p := Vector3(2, y, -9)
		assert(RoomScript.office_uv(p, north, "wall").is_equal_approx(RoomScript.office_uv(p, low, "wall")))
		assert(RoomScript.office_uv(p, north, "wall").is_equal_approx(RoomScript.office_uv(p, high, "wall")))
	assert(is_equal_approx(RoomScript.office_uv(Vector3(0, 2.5, -9), north, "wall").y, 0.5))
	assert(is_equal_approx(RoomScript.office_uv(Vector3(4, 2.5, -9), north, "wall").x - RoomScript.office_uv(Vector3(0, 2.5, -9), north, "wall").x, 1))
	print("PASS: finestre senza reset UV, stessa quota verticale, periodo parete 4m")
	var east := Vector3(9.15, 2.5, 0)
	var south := Vector3(0, 2.5, 9.15)
	var west := Vector3(-9.15, 2.5, 0)
	for pair in [[north, east, Vector3(9, 2.5, -9)], [east, south, Vector3(9, 2.5, 9)], [south, west, Vector3(-9, 2.5, 9)]]:
		assert(RoomScript.office_uv(pair[2], pair[0], "wall").is_equal_approx(RoomScript.office_uv(pair[2], pair[1], "wall")))
	var start := RoomScript.office_uv(Vector3(-9, 2.5, -9), north, "wall")
	var end := RoomScript.office_uv(Vector3(-9, 2.5, -9), west, "wall")
	assert(is_equal_approx(end.x - start.x, 18.0)) # full perimeter = integer repeats
	print("PASS: fase continua ai quattro angoli, chiusura perimetro intera")
	assert(RoomScript.office_uv(Vector3(-9, 5, -9), Vector3.ZERO, "ceiling") == Vector2.ZERO)
	assert(RoomScript.office_uv(Vector3(9, 5, 9), Vector3.ZERO, "ceiling").is_equal_approx(Vector2(15, 15)))
	assert(RoomScript.office_uv(Vector3(-7.8, 5, -7.8), Vector3.ZERO, "ceiling").is_equal_approx(Vector2.ONE))
	print("PASS: soffitto XZ, 15x15 ripetizioni, piastrelle da 60cm")
	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 = 0.25
		var inspection := OmniLight3D.new()
		inspection.position = Vector3(0, 3, 0)
		inspection.omni_range = 30
		inspection.light_energy = 1.8
		world.add_child(inspection)
		for i in 3:
			world.player.rotation.y = -PI * 0.25 if i == 0 else PI * 0.25 + PI
			inspection.visible = i < 2 # last image retains actual horror lighting
			await create_timer(0.4).timeout
			await RenderingServer.frame_post_draw
			root.get_texture().get_image().save_png("/tmp/zombie-office-uv-%d.png" % i)
	world.queue_free()
	await process_frame
	quit()