extends SceneTree
const Anchor = preload("res://fx/target_effect_anchor.gd")
const GameScene = preload("res://game_scene.gd")
class Client extends Node:
	func get_main_vid() -> int: return 1
class World extends Node:
	var target: Node3D
	func node_for(_vid: int) -> Node3D: return target
class Registry extends RefCounted:
	var seen: Array = []
	func spawn_target(event: Dictionary, target: Node3D, _world: Node3D): seen.append([event, target])
var failures := 0
func check(ok: bool, label: String) -> void:
	if not ok:
		failures += 1
		printerr("FAIL: " + label)
func _init() -> void:
	call_deferred("run")
func run() -> void:
	var target := Node3D.new()
	root.add_child(target)
	target.position = Vector3(8, 2, -5)
	target.rotation.y = PI * 0.5
	var effect := Node3D.new()
	root.add_child(effect)
	var anchor := Anchor.new()
	effect.add_child(anchor)
	check(anchor.configure(target, Vector3(100, 0, 100), true), "following target configured")
	check(effect.global_position.distance_to(target.to_global(Vector3(1, 1, 0))) < 0.00001, "source Z-up/cm and target rotation")
	target.position.x += 3
	anchor._process(0)
	check(effect.global_position.distance_to(target.to_global(Vector3(1, 1, 0))) < 0.00001, "follows target movement")
	anchor.configure(target, Vector3(100, 0, 100), false)
	check(effect.global_position.distance_to(target.global_position + Vector3(1, 1, 0)) < 0.00001, "snapshot offset is world-aligned")
	var position := effect.global_position
	target.position.x += 2
	await process_frame
	check(effect.global_position == position, "snapshot does not follow")
	var game := GameScene.new()
	root.add_child(game)
	game.client = Client.new()
	game.add_child(game.client)
	var world := World.new()
	game.add_child(world)
	world.target = target
	game.net_world = world
	var registry := Registry.new()
	game.fx = registry
	game._on_skill_cast_started(1, 2)
	world.target = null # selected target later changes, original cast remains.
	game._on_local_motion_event_detailed({"type": 10, "effect": "full/path.mse", "sound": "", "pos": Vector3.ZERO})
	check(registry.seen.size() == 1 and registry.seen[0][1] == target, "event keeps cast-time target and full path")
	check(registry.seen[0][0].effect == "full/path.mse", "path not reduced to basename")
	target.free()
	game._on_local_motion_event_detailed({"type": 10, "effect": "full/path.mse", "sound": "", "pos": Vector3.ZERO})
	check(registry.seen.size() == 1, "despawned target not replaced by caster")
	game._on_skill_cast_started(1, 0)
	game._on_local_motion_event_detailed({"type": 10, "effect": "full/path.mse", "sound": "", "pos": Vector3.ZERO})
	check(registry.seen.size() == 1, "cast without a target spawns no target effect")
	# A following effect whose target dies/despawns mid-life is freed, never left at a stale position.
	var victim := Node3D.new()
	root.add_child(victim)
	var outside := Node3D.new()
	var outside_anchor := Anchor.new()
	check(not outside_anchor.configure(outside, Vector3.ZERO, true), "target outside the tree is rejected")
	outside_anchor.free()
	outside.free()
	var follower := Node3D.new()
	root.add_child(follower)
	var follow_anchor := Anchor.new()
	follower.add_child(follow_anchor)
	check(follow_anchor.configure(victim, Vector3.ZERO, true), "follower configured")
	var follower_ref: WeakRef = weakref(follower)
	victim.free()
	await process_frame
	await process_frame
	check(follower_ref.get_ref() == null, "follower freed after its target left the tree")
	game.free()
	effect.free()
	await process_frame
	print("target_effect_test: failures=%d" % failures)
	quit(1 if failures else 0)