extends Node
const MOTION := preload("res://scripts/planets/lander_motion.gd")
func _ready() -> void:
	var motion := MOTION.new()
	for tick in 60:
		motion.step(1.0/60,1,false,false,0,false)
	assert(motion.velocity == Vector2.ZERO and motion.rotation > 1)
	motion = MOTION.new()
	for tick in 60:
		motion.step(1.0/60,0,true,false,0,false)
	assert(motion.velocity.y < -50)
	var speed: float = motion.velocity.length()
	motion.step(1.0/60,0,false,false,0,false)
	assert(motion.velocity.length() > speed-1 and motion.velocity.length() < speed)
	for tick in 120:
		motion.step(1.0/60,0,false,true,0,false)
	assert(motion.velocity.y > 0 and motion.velocity.y <= motion.reverse_max_speed)
	motion = MOTION.new()
	motion.rotation = PI*0.5
	motion.step(0.1,0,true,false,0,false)
	assert(motion.velocity.x > 0 and absf(motion.velocity.y) < 0.01)
	motion = MOTION.new()
	motion.step(0.1,0,false,false,1,false)
	assert(motion.velocity.x > 0 and motion.rotation == 0)
	for tick in 120:
		motion.step(1.0/60,0,true,false,0,true)
	assert(motion.boost_active and motion.energy < 100 and motion.velocity.length() > motion.max_speed)
	var game := preload("res://scenes/game/game.tscn").instantiate()
	add_child(game)
	await get_tree().process_frame
	var manager := game.get_node("PlanetExpeditions")
	for enemy in get_tree().get_nodes_in_group("enemies"):
		enemy.position = Vector2(-9999,-9999)
	# Compare the actual ship controller with the lander under the same actions.
	var paired := MOTION.new()
	paired.configure(game.player)
	game.player.position = Vector2(10000,10000)
	game.player.velocity = Vector2.ZERO
	game.player.rotation = 0
	game.player.angular_velocity = 0
	for phase in [["ship_thrust",0.0,true,false,0.0],["ship_turn_right",1.0,false,false,0.0],["ship_strafe_right",0.0,false,false,1.0],["ship_brake",0.0,false,true,0.0]]:
		Input.action_press(phase[0])
		for tick in 60:
			game.player._physics_process(1.0/60)
			paired.step(1.0/60,phase[1],phase[2],phase[3],phase[4],false)
			assert(game.player.velocity.distance_to(paired.velocity) < 0.001)
			assert(absf(angle_difference(game.player.rotation,paired.rotation)) < 0.001)
		Input.action_release(phase[0])
	game.player.velocity = Vector2.ZERO
	game.player.rotation = 0
	game.player.angular_velocity = 0
	game.player.position = game.protected_planet.position
	manager._process(0)
	assert(manager._text.text.contains("TLEN") and manager._text.text.contains("TEMP") and manager._text.text.contains("BIO"))
	assert(manager._text.text.contains("ŁUP POI"))
	manager.land_nearby()
	var screen: Control = manager.screen
	assert(screen._motion.max_speed == game.player.max_speed)
	assert(screen._motion.turn_acceleration == game.player.turn_acceleration)
	screen.lander.position = screen.world.data.pois[0].position
	var key := InputEventKey.new()
	key.pressed = true
	key.keycode = KEY_F
	screen._input(key)
	assert(not screen._dialog.visible)
	key.keycode = KEY_E
	screen._input(key)
	assert(screen._dialog.visible)
	var ship_energy: float = game.player.energy
	Input.action_press("ship_thrust")
	screen._dialog.hide()
	screen._physics_process(0.1)
	Input.action_release("ship_thrust")
	assert(screen._motion.velocity.y < 0)
	assert(game.player.energy == ship_energy)
	manager.finish_surface(true)
	game.queue_free()
	await get_tree().process_frame
	print("LANDER FLIGHT PASS: thrust, inertia, brake/reverse, rotation, local strafe, boost, shared parameters, E interaction, immediate scan")
	get_tree().quit()