extends SceneTree

## Close-up visual regression capture for Akiba's repaired assets.
##   godot --path . --windowed --resolution 1280x720 \
##     -s res://debug/akiba_detail_capture.gd -- <out_dir>

var _frames := 0
var _out_dir := "."
var _camera: Camera3D


func _initialize() -> void:
	var args := OS.get_cmdline_user_args()
	if not args.is_empty():
		_out_dir = args[0]
	change_scene_to_file("res://scenes/maps/neon_alley/neon_alley.tscn")


func _process(_delta: float) -> bool:
	_frames += 1
	if _frames == 60:
		_camera = Camera3D.new()
		_camera.far = 1200.0
		current_scene.add_child(_camera)
		_camera.current = true
		var poles := root.find_children(
			"UtilityPole_*", "StaticBody3D", true, false)
		if not poles.is_empty():
			var pole := poles[0] as StaticBody3D
			_camera.look_at_from_position(
				pole.global_position + Vector3(-8.0, 3.2, -9.0),
				pole.global_position + Vector3(0.6, 5.8, 0), Vector3.UP)
	elif _frames == 90:
		_snap("powerlines")
		var cars := root.find_children("Car_*", "StaticBody3D", true, false)
		if not cars.is_empty():
			var car := cars[0] as StaticBody3D
			_camera.look_at_from_position(
				car.global_position + Vector3(6.5, 3.1, 7.5),
				car.global_position + Vector3(0, 1.0, 0), Vector3.UP)
	elif _frames == 120:
		_snap("parked_car")
		var landings := root.find_children(
			"EscLanding_*", "StaticBody3D", true, false)
		if not landings.is_empty():
			var landing := landings[0] as StaticBody3D
			_camera.look_at_from_position(
				landing.global_position + Vector3(0, 3.2, -10.0),
				landing.global_position + Vector3(0, 2.0, 0), Vector3.UP)
	elif _frames == 150:
		_snap("supported_escape")
		unload_current_scene()
	elif _frames >= 240:
		return true
	return false


func _snap(tag: String) -> void:
	var image := root.get_viewport().get_texture().get_image()
	var path := _out_dir.path_join("akiba_%s.png" % tag)
	var error := image.save_png(path)
	if error == OK:
		print("akiba_detail_capture: saved ", path)
	else:
		printerr("akiba_detail_capture: save failed ", error)