# weapon_trace_test —— 40250 WeaponTrace 的轨迹/生命周期/接入回归。
#   godot --headless --path project --script weapon_trace_test.gd
extends SceneTree

const WeaponTrace = preload("res://ui/weapon_trace.gd")
const PlayerView = preload("res://ui/player_view.gd")

var _fail := 0

func _ck(ok: bool, message: String) -> void:
	if not ok:
		_fail += 1
		printerr("FAIL: " + message)

func _init() -> void:
	await _run()
	if _fail == 0:
		print("PASS: weapon_trace_test")
		quit(0)
	else:
		printerr("%d check(s) failed" % _fail)
		quit(1)

func _run() -> void:
	await _test_trace_lifecycle()
	await _test_player_view_integration()

func _test_trace_lifecycle() -> void:
	var host := Node3D.new()
	get_root().add_child(host)
	var weapon := MeshInstance3D.new()
	var box := BoxMesh.new()
	box.size = Vector3(0.12, 0.12, 1.6)
	weapon.mesh = box
	host.add_child(weapon)
	var trace: Node = WeaponTrace.new()
	host.add_child(trace)
	await process_frame
	_ck(trace.attach_to_weapon(weapon), "box weapon resolves a trace tip")
	trace.turn_on()
	for i in 6:
		weapon.position = Vector3(float(i) * 0.05, 0.0, 0.0)
		trace._process(0.016)
	var active: Dictionary = trace.debug_state()
	_ck(active.get("playing", false), "TurnOn keeps trace active")
	_ck(int(active.get("short_points", 0)) >= 2 and int(active.get("long_points", 0)) >= 2,
			"Update samples both short and long world tracks")
	_ck(int(active.get("vertex_count", 0)) >= 4, "BuildVertex produces a triangle-strip vertex band")
	trace.turn_off()
	var before_fade: Dictionary = trace.debug_state()
	trace._process(0.05)
	var during_fade: Dictionary = trace.debug_state()
	_ck(not during_fade.get("playing", true), "TurnOff stops sampling")
	_ck(int(during_fade.get("long_points", 0)) > 0 and
			int(during_fade.get("long_points", 0)) <= int(before_fade.get("long_points", 0)),
			"TurnOff preserves the tail for lifetime fade")
	trace._process(0.20)
	var expired: Dictionary = trace.debug_state()
	_ck(int(expired.get("short_points", 0)) == 0 and int(expired.get("long_points", 0)) == 0,
			"expired trace samples are removed")
	trace.attach_to_weapon(weapon)
	var replaced: Dictionary = trace.debug_state()
	_ck(int(replaced.get("short_points", 0)) == 0 and int(replaced.get("long_points", 0)) == 0,
			"re-attaching a weapon clears the old actor trace")
	trace.free()
	host.free()
	await process_frame

func _test_player_view_integration() -> void:
	if not ClassDB.class_exists("Metin2Model") or not ClassDB.class_exists("Metin2AnimPlayer"):
		print("  (skip PlayerView integration: animation extension unavailable)")
		return
	var assets := AssetRoot.path()
	var weapon_path := assets.path_join("item/ymir work/item/weapon/00010.gr2")
	if not FileAccess.file_exists(weapon_path):
		print("  (skip PlayerView integration: weapon asset unavailable)")
		return
	var pv: Node = PlayerView.new()
	get_root().add_child(pv)
	_ck(pv.build(assets, 0), "PlayerView builds for WeaponTrace integration")
	pv.set("weapon_gr2", weapon_path)
	for i in 4:
		await process_frame
	var attached: Dictionary = pv.weapon_trace_state()
	_ck(attached.get("present", false), "ordinary sword creates PlayerView WeaponTrace")
	pv.play_attack_motion(2, 14, 1.0)
	var attacking: Dictionary = pv.weapon_trace_state()
	_ck(attacking.get("playing", false), "attack motion turns WeaponTrace on")
	# playback_finished is the 40250 motion-queue boundary; invoke the same
	# callback deterministically instead of trying to interrupt an active once
	# motion with a loop request (PlayerView correctly defers that request).
	pv._on_playback_finished()
	var hidden: Dictionary = pv.weapon_trace_state()
	_ck(not hidden.get("playing", true), "new non-attack motion turns WeaponTrace off")
	pv.set_weapon_trace_enabled(false)
	await process_frame
	_ck(not pv.weapon_trace_state().get("present", true), "weapon type gate can destroy the trace")
	pv.free()
	if ClassDB.class_exists("Metin2Model"):
		Metin2Model.clear_texture_cache()
	if ClassDB.class_exists("Metin2AnimPlayer"):
		Metin2AnimPlayer.clear_clip_cache()
	await process_frame