# game_camera_test —— CameraProcedure / PythonApplicationCamera 的离线状态回归。
extends SceneTree

const GameCamera = preload("res://game_camera.gd")

var _fail := 0

func _ck(condition: bool, message: String) -> void:
	if not condition:
		_fail += 1
		printerr("FAIL: " + message)

func _init() -> void:
	await _run()
	if _fail == 0:
		print("PASS: game_camera_test (NORMAL/STAND/BLEND + cm/degree conversion)")
		quit(0)
	else:
		printerr("%d check(s) failed" % _fail)
		quit(1)

func _run() -> void:
	var root := Node3D.new()
	get_root().add_child(root)
	var actor := Node3D.new()
	actor.position = Vector3(10, 2, 20)
	root.add_child(actor)
	var camera: Camera3D = GameCamera.new()
	camera.target = actor
	root.add_child(camera)
	await process_frame

	_ck(camera.camera_mode == GameCamera.CameraMode.NORMAL, "starts in NORMAL mode")
	_ck(is_equal_approx(camera.dist, 15.5), "default distance is 1550cm")
	_ck(is_equal_approx(camera.pitch, deg_to_rad(27.0)), "default pitch is 27 degrees")

	var shot := {"x": 1000, "y": 2000, "z": 300, "distance": 500, "pitch": 40, "rot": 90,
		"up": 0, "view": 0, "cross": 0}
	camera.set_event_camera(shot)
	_ck(camera.camera_mode == GameCamera.CameraMode.STAND, "SET_CAMERA enters STAND")
	_ck(camera.is_event_locked(), "event camera locks orbit")
	var setting: Dictionary = camera.get_camera_setting()
	_ck(is_equal_approx(float(setting.distance), 500.0), "event distance remains centimetres")
	camera.snap_to_target()
	_ck(camera.global_position.distance_to(Vector3(13.830, 6.214, 20)) < 0.02,
		"event centre converts server x/y/z into world axes: %s" % camera.global_position)

	camera.blend_event_camera({"x": 3000, "y": 4000, "z": 500, "distance": 1000,
		"pitch": 60, "rot": 180}, 1.0)
	camera._process(0.5)
	var middle: Dictionary = camera.get_camera_setting()
	_ck(camera.camera_mode == GameCamera.CameraMode.BLEND, "blend remains BLEND before deadline")
	_ck(is_equal_approx(float(middle.distance), 750.0), "blend is linear at half duration")
	camera._process(0.6)
	_ck(camera.camera_mode == GameCamera.CameraMode.STAND, "blend settles into STAND")
	_ck(is_equal_approx(camera.dist, 10.0), "blend target distance applied")
	camera.set_default_camera()
	_ck(camera.camera_mode == GameCamera.CameraMode.NORMAL, "RESTORE_CAMERA enters NORMAL")
	_ck(is_equal_approx(camera.dist, 15.5), "RESTORE_CAMERA restores saved normal view")
	root.queue_free()