extends Node2D

# Preview, not a test - #53's "telegraph visible mid-countdown" screenshot.
# Freezes an EnemyBigLaserBeam partway through its charge, aimed across the
# fleet, so the widening beam-line telegraph is clearly visible.
#
#   bash tests/screenshot.sh res://tests/_mothership_beam_preview.tscn /tmp/beam.png 20 720x1280

var main: Node


func _ready() -> void:
	GameState.buildings.clear()
	GameState.extractors.clear()
	main = load("res://Main.tscn").instantiate()
	add_child(main)
	main.get_node("BackgroundLayer").visible = false
	main.get_node("AsteroidField").visible = false
	main.get_node("PlanetField").visible = false
	main.get_node("BuildingField").visible = false
	main.get_node("EnemySpawner").set_process(false)
	main.get_node("AsteroidField").set_process(false)

	var fleet: Node = main.get_node("Fleet")
	for ship in fleet.ships:
		if is_instance_valid(ship):
			ship.set_physics_process(false)

	var mothership: Node = load("res://Enemy.tscn").instantiate()
	mothership.enemy_id = "enemy_mothership"
	mothership.position = Vector2(-500, -300)
	main.add_child(mothership)

	var beam: Node2D = load("res://EnemyBigLaserBeam.tscn").instantiate()
	beam.charge_time = 10.0   # frozen mid-countdown for the screenshot
	beam.beam_range = 1400.0
	beam.beam_half_width = 35.0
	main.add_child(beam)
	beam.launch(mothership.position, fleet.get_centroid() - mothership.position)
	beam.charge_left = beam.charge_time * 0.55
	beam.set_process(false)
	beam.queue_redraw()

	var camera: Camera2D = main.get_node("Camera2D")
	camera.position = (mothership.position + fleet.get_centroid()) * 0.5
	camera.zoom = Vector2(0.7, 0.7)

	get_tree().paused = true