# weapon_trace_multi_part_parity_test —— 40250 AttachWeapon 的多部件语义。
#
# CActorInstance::AttachWeapon 会分别对 PART_WEAPON / PART_WEAPON_LEFT
# 创建 CWeaponTrace；匕首（以及骑马扇）可能同时有右手与左手部件。
# 当前端不能只查找单个 Weapon 节点，否则第二条刀光会永久缺失。
extends SceneTree

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

var _fail := 0

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

func _init() -> void:
	call_deferred("_run")

func _run() -> void:
	var pv := PlayerView.new()
	root.add_child(pv)
	await process_frame

	# 用两个带几何体的挂点模拟 Metin2Model 的 Weapon / Shield 部件，
	# 不依赖 native GR2 资产即可验证 AttachWeapon 的部件枚举。
	var model := Node3D.new()
	model.name = "Metin2Model"
	pv.add_child(model)
	var weapon := MeshInstance3D.new()
	weapon.name = "Weapon"
	var weapon_box := BoxMesh.new()
	weapon_box.size = Vector3(0.1, 0.1, 1.0)
	weapon.mesh = weapon_box
	model.add_child(weapon)
	var shield := MeshInstance3D.new()
	shield.name = "Shield"
	var shield_box := BoxMesh.new()
	shield_box.size = Vector3(0.1, 0.1, 1.0)
	shield.mesh = shield_box
	model.add_child(shield)
	pv.model = model
	pv._refresh_weapon_trace()

	var state: Dictionary = pv.weapon_trace_state()
	_ck(int(state.get("count", 0)) == 2,
		"Weapon and Shield parts each create a WeaponTrace")

	pv.set_weapon_trace_enabled(false)
	await process_frame
	_ck(int(pv.weapon_trace_state().get("count", 0)) == 0,
		"disabling traces destroys every weapon-part trace")

	if _fail == 0:
		print("PASS: weapon_trace_multi_part_parity_test (Weapon + Shield traces)")
		quit(0)
	else:
		printerr("%d check(s) failed" % _fail)
		quit(1)