extends Node2D
const EFFECT := preload("res://scripts/game/enemy_destruction_effect.gd")
func _ready() -> void:
	run.call_deferred()

func run() -> void:
	var source := Sprite2D.new()
	source.texture = preload("res://assets/alien_ships/alien_01.png")
	source.scale = Vector2.ONE*56.0/maxf(source.texture.get_width(),source.texture.get_height())
	source.position = Vector2(100,80)
	add_child(source)
	for tier in 3:
		var effect := Node2D.new()
		effect.set_script(EFFECT)
		effect.play_audio = false
		effect.configure(source,Vector2(100,0),tier)
		add_child(effect)
		effect.set_process(false)
		assert(effect.global_position.is_equal_approx(source.global_position))
		assert(effect._fragments.size() >= 18)
		assert(effect._bursts.size() == 3+tier)
		effect._process(0.1)
		assert(effect.global_position.x > source.global_position.x)
		assert(effect._bursts[0].visual.visible)
		effect._process(1.6)
		for burst in effect._bursts: assert(not burst.visual.visible)
		effect._process(1.0)
		assert(effect.is_queued_for_deletion())
	await get_tree().process_frame
	# Actual enemy death must spawn the new effect and award the kill only once.
	var enemy := preload("res://scenes/game/enemy_ship.tscn").instantiate()
	add_child(enemy)
	enemy.get_node("Sprite2D").texture = source.texture
	enemy.take_damage(1e12)
	enemy.take_damage(1e12)
	assert(enemy.is_queued_for_deletion())
	assert(get_tree().get_nodes_in_group("enemy_explosions").size() == 1)
	await get_tree().process_frame
	for index in 24:
		var effect := Node2D.new()
		effect.set_script(EFFECT)
		effect.play_audio = false
		effect.configure(source,Vector2.ZERO,0)
		add_child(effect)
		await get_tree().process_frame
	assert(get_tree().get_nodes_in_group("enemy_explosions").size() <= EFFECT.MAX_EFFECTS)
	for child in get_children(): child.queue_free()
	for frame in 3: await get_tree().process_frame
	print("ENEMY_DESTRUCTION_TEST: PASS (tiers, debris, drift, lifetime, enemy death, effect cap)")
	get_tree().quit()