extends Node
const RANGE := preload("res://scripts/planets/orbital_contact_range.gd")

func settle() -> void:
	for frame in 5: await get_tree().process_frame
	await RenderingServer.frame_post_draw

func capture(name: String) -> void:
	await settle()
	get_viewport().get_texture().get_image().save_png("res://artifacts/surface_atmosphere_%s.png" % name)

func _ready() -> void:
	GameState.start_new_run()
	GameState.system_seed = 8428159
	var game := preload("res://scenes/game/game.tscn").instantiate()
	add_child(game)
	await settle()
	var manager := game.get_node("PlanetExpeditions")
	for enemy in get_tree().get_nodes_in_group("enemies"): enemy.position = Vector2(9999,9999)
	game.player.landing_combat_lock = 0
	game.player.set_physics_process(false)
	var planet: Node2D = game.protected_planet
	game.player.position = planet.position+Vector2(planet.radius+40,0)
	manager._message_time = 0
	manager._process(0)
	assert(not manager._prompt.visible and not game.is_near_protected_planet())
	game.player.position = planet.position+Vector2(planet.radius*0.85,0)
	manager._process(0)
	assert(manager._prompt.visible and game.is_near_protected_planet())
	game.player.position = manager.freighter.position+Vector2(140,0)
	manager._process(0)
	assert(not RANGE.at_freighter(game.player,manager.freighter))
	game.player.position = manager.freighter.position+Vector2(45,0)
	manager._process(0)
	assert(manager._prompt.visible and manager._land_button.text == "DOKUJ  [L]")
	game.player.position = manager.freighter.position+Vector2(0,155)
	assert(not RANGE.at_freighter(game.player,manager.freighter))
	game.free()
	var progress: Resource = GameState.captain.expedition
	var profile: Dictionary = preload("res://scripts/planets/planet_profiles.gd").generate(99,0,"Atmosfera")
	profile.temperature = 20
	profile.oxygen = 98
	profile.flora = 0
	assert(progress.begin_visit(profile))
	progress.visit_seed = 200
	var surface := Control.new()
	surface.set_script(preload("res://scripts/planets/surface_screen.gd"))
	surface.captain = GameState.captain
	surface.progress = progress
	add_child(surface)
	surface.set_physics_process(false)
	surface.set_process(false)
	var atmosphere: Node2D = surface._surface_viewport.get_node("SurfaceAtmosphere")
	var mountains: Node2D = surface.world.get_node("Mountains")
	assert(mountains.material.shader.resource_path.ends_with("mountain_blend.gdshader"))
	assert(atmosphere.clouds.z_index > surface.lander.z_index)
	assert(atmosphere.shadows.z_index < surface.lander.z_index)
	assert(atmosphere._banks.size() == 49)
	assert(atmosphere.TEXTURE.get_image().has_mipmaps())
	var target: Vector2 = surface.world.data.mountains[0].position
	for mountain in surface.world.data.mountains:
		if mountain.position.length_squared() < target.length_squared(): target = mountain.position
	surface.lander.position = target+Vector2(70,50)
	surface.lander.reset_physics_interpolation()
	surface.camera.position_smoothing_enabled = false
	surface.camera.position = target
	surface.camera.force_update_scroll()
	await settle()
	# Freeze time and compare camera-space displacement: clouds must move faster.
	atmosphere.set_process(false)
	atmosphere._process(0)
	var bank: Dictionary = atmosphere._banks[0]
	var previous: Vector2 = bank.mist.position
	var previous_center: Vector2 = surface.camera.get_screen_center_position()
	surface.camera.position += Vector2(100,0)
	surface.camera.force_update_scroll()
	await settle()
	atmosphere._process(0)
	var center_delta: Vector2 = surface.camera.get_screen_center_position()-previous_center
	assert(center_delta.length() > 50)
	assert(bank.mist.position.is_equal_approx(previous+center_delta*(1.0-float(bank.parallax))))
	previous = bank.mist.position
	atmosphere._process(1.0)
	assert(bank.mist.position.distance_to(previous) > 4)
	surface.camera.position = target
	surface.camera.force_update_scroll()
	atmosphere._process(0)
	var blend: Material = mountains.material
	mountains.material = null
	atmosphere.hide()
	await capture("before")
	mountains.material = blend
	await capture("mountains")
	atmosphere.show()
	atmosphere.set_process(true)
	await capture("clouds")
	progress.finish_visit(GameState.captain,false)
	surface.queue_free()
	await get_tree().process_frame
	print("SURFACE ATMOSPHERE PASS: close-only planet/freighter contact, shared service range, transparent clouds above ship, shadows below, two parallax speeds, wind, mipmaps, blended mountains")
	get_tree().quit()