# skybox_test —— 40250 ClientVS22 texture-mode SkyBox -> Godot sky shader。
# 验证真实 texture-mode SkyBox：CapeDragonHead 的五个非空面回退渐变，
# DawnMistWood 的六面天空与云层同时接入并保留参考 UV / 速度参数。
extends SceneTree

var _fail := 0

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

func _make_world(map_path: String) -> Node:
	var world: Node = ClassDB.instantiate("Metin2World")
	world.set("auto_load", false)
	world.set("assets_root", AssetRoot.path())
	world.set("map_path", map_path)
	world.set("focus_tile", Vector2i(0, 0))
	world.set("load_radius_tiles", 0)
	world.set("objects_enabled", false)
	world.set("splat_enabled", false)
	world.set("water_enabled", false)
	get_root().add_child(world)
	return world

func _init() -> void:
	if not ClassDB.class_exists("Metin2World"):
		printerr("FAIL: Metin2World extension is not registered")
		quit(1)
		return
	var world := _make_world("metin2_patch_dragon_rock/metin2_map_capedragonhead")
	_ck(bool(world.call("load_map")), "CapeDragonHead map loads")
	var report: Dictionary = world.call("get_load_report")
	_ck(bool(report.get("env_ok", false)), "texture-mode .msenv env_ok")
	var env_node := world.get_node_or_null("WorldEnv") as WorldEnvironment
	_ck(env_node != null and env_node.environment != null, "WorldEnv has Environment")
	if env_node != null:
		_ck(int(env_node.get_meta("msenv_sky_face_count", 0)) == 5,
				"five non-empty SkyBox faces resolve")
		_ck(bool(env_node.get_meta("msenv_sky_texture_mode_applied", false)),
				"texture render mode uses six-face shader")
		var sky := env_node.environment.sky
		_ck(sky != null, "WorldEnv has sky")
		if sky != null:
			var mat := sky.get_material() as ShaderMaterial
			_ck(mat != null, "texture-mode sky uses ShaderMaterial")
			if mat != null:
				_ck(mat.shader != null and mat.shader.code.find("shader_type sky;") >= 0,
						"six-face sky shader is installed")
				_ck(bool(mat.get_shader_parameter("has_front")), "front face is present")
				_ck(bool(mat.get_shader_parameter("has_back")), "back face is present")
				_ck(bool(mat.get_shader_parameter("has_left")), "left face is present")
				_ck(bool(mat.get_shader_parameter("has_right")), "right face is present")
				_ck(bool(mat.get_shader_parameter("has_top")), "top face is present")
				_ck(not bool(mat.get_shader_parameter("has_bottom")),
						"empty bottom face falls back to gradient")
	world.queue_free()
	await process_frame

	var cloud_world := _make_world("metin2_patch_dragon_rock/metin2_map_dawnmistwood")
	_ck(bool(cloud_world.call("load_map")), "DawnMistWood map loads")
	var cloud_report: Dictionary = cloud_world.call("get_load_report")
	_ck(bool(cloud_report.get("env_ok", false)), "texture-mode + cloud .msenv env_ok")
	var cloud_env := cloud_world.get_node_or_null("WorldEnv") as WorldEnvironment
	_ck(cloud_env != null and cloud_env.environment != null, "cloud WorldEnv has Environment")
	if cloud_env != null:
		_ck(int(cloud_env.get_meta("msenv_sky_face_count", 0)) == 5,
				"cloud map five non-empty SkyBox faces resolve")
		_ck(bool(cloud_env.get_meta("msenv_sky_texture_mode_applied", false)),
				"texture render mode remains active when CloudTexture exists")
		_ck(bool(cloud_env.get_meta("msenv_sky_cloud_applied", false)),
				"cloud texture is attached to texture-mode sky shader")
		var cloud_sky := cloud_env.environment.sky
		var cloud_mat := cloud_sky.get_material() as ShaderMaterial if cloud_sky != null else null
		_ck(cloud_mat != null, "cloud map uses ShaderMaterial")
		if cloud_mat != null:
			_ck(bool(cloud_mat.get_shader_parameter("has_cloud")),
					"sky shader enables cloud plane")
			_ck(cloud_mat.shader != null and cloud_mat.shader.code.find("TIME * cloud_speed") >= 0,
					"cloud shader preserves reference UV scroll")
			if cloud_mat != null:
				var scale := cloud_mat.get_shader_parameter("cloud_scale") as Vector2
				_ck(scale != null and is_equal_approx(scale.x, 2000.0) and is_equal_approx(scale.y, 2000.0),
						"cloud scale converts reference centimetres to Godot metres")
				var speed := cloud_mat.get_shader_parameter("cloud_speed") as Vector2
				_ck(speed != null and is_equal_approx(speed.x, 0.001) and is_equal_approx(speed.y, 0.001),
						"cloud speed preserves reference seconds parameter")
	cloud_world.queue_free()
	await process_frame
	if _fail == 0:
		print("PASS: skybox_test (.msenv six-face texture sky)")
		quit(0)
	else:
		printerr("%d check(s) failed" % _fail)
		quit(1)