@tool
extends Node3D

func get_resource_name(resource: Resource) -> String: return resource.resource_path.get_file().trim_suffix('.tres') # todo 性能


func snap_vector3(value: Vector3) -> Vector3: return Vector3(snap_float(value.x), snap_float(value.y), snap_float(value.z))


func snap_float(value: float) -> float: return floor(value / Setting.pixel_size) * Setting.pixel_size


func dir_angle(dir: Vector2) -> float:
	dir.x = abs(dir.x)
	return dir.angle_to(Vector2.RIGHT)


func angle_dir(angle: float) -> Vector2:
	return Vector2.RIGHT.rotated(angle)


func vector_reduce(vector: Vector2, reduce: float) -> Vector2:
	var length: float = vector.length()
	if length == 0:
		return vector
	var new_len = max(length - reduce, 0)
	var scale_rate = new_len / length
	return vector * scale_rate


func get_level_grid_pos(pos: Vector3) -> Vector3i:
	var grid_size: float = Setting.pixel_size * Setting.grid_pixel_size
	var ret: Vector3i = Vector3i(get_div_scale(pos.x, grid_size), get_div_scale(pos.y, grid_size), get_div_scale(pos.z, grid_size))
	return ret


func get_level_grid_pos2(pos: Vector3) -> Vector3i:
	pos += Vector3.ONE * Setting.pixel_size * Setting.grid_pixel_size;
	var grid_size: float = Setting.pixel_size * Setting.grid_pixel_size * 2
	var ret: Vector3i = Vector3i(get_div_scale(pos.x, grid_size), get_div_scale(pos.y, grid_size), get_div_scale(pos.z, grid_size))
	return ret


func get_level_float_pos(pos: Vector3i) -> Vector3:
	var grid_size: float = Setting.pixel_size * Setting.grid_pixel_size
	return Vector3(pos.x * grid_size, pos.y * grid_size, pos.z * grid_size)


func get_level_float_pos2(pos: Vector3i) -> Vector3:
	var grid_size: float = Setting.pixel_size * Setting.grid_pixel_size * 2
	return Vector3(pos.x * grid_size, pos.y * grid_size, pos.z * grid_size)

func get_level_float_pos2_floor(pos: Vector3i) -> Vector3:
	var grid_size: float = Setting.pixel_size * Setting.grid_pixel_size
	return get_level_float_pos2(pos) - Vector3(0, grid_size, 0)


func get_level_id(pos: Vector3) -> Vector3i:
	var ret: Vector3i = Vector3i(get_div_scale(pos.x, Setting.size_basic.x), get_div_scale(pos.y, Setting.size_basic.y), get_div_scale(pos.z, Setting.size_basic.z))
	return ret


func get_div_scale(a: float, b: float) -> int:
	#解决浮点数精度问题
	var div: float = a / b
	var is_positive: bool = div > 0
	var decimal: float = abs(div - int(div))
	if is_positive and decimal > 0.999:
		div += 0.001
	if not is_positive and decimal < 0.001:
		div += 0.001
	return floor(div)


func raycast_character(shape: Shape3D, origin: Vector3, dir: Vector2) -> Array[Character]:
	var space_state: PhysicsDirectSpaceState3D = get_world_3d().direct_space_state
	var query: PhysicsShapeQueryParameters3D = PhysicsShapeQueryParameters3D.new()
	var angle: float = dir_angle(dir)
	query.shape = shape
	query.transform.origin = origin
	query.transform.basis = query.transform.basis.rotated(Vector3.UP, angle)
	var result: Array[Dictionary] = space_state.intersect_shape(query)
	var result2: Array = result.map(func(v): return v["collider"]).filter(func(v): return v is Character)
	var result3: Array[Character]
	for node in result2:
		result3.append(node as Character)
	return result3


func clean_animation_lib():
	#删除技能配置中没有的animation文件
	#todo 非阻断 有空再说
	pass


func refresh_animation_lib():
	#刷新animation库 使其与animation文件同步
	var animation_library_path: String = "res://resource/skill_animation_library/animation_library.tres"
	var animation_library = load(animation_library_path)

	var dir_path: String = "res://resource/skill_animation"
	var dir: DirAccess = DirAccess.open(dir_path)
	for file in dir.get_files():
		var path: String = dir_path + "/" + file
		var res = load(path)
		if res is Animation:
			var animation: Animation = res as Animation
			var animation_name: String = Util.get_resource_name(animation)
			print("refresh_animation_lib: ", animation_name)
			animation_library.add_animation(animation_name, animation)
			animation_library.animation_added.emit(animation_name)

	ResourceSaver.save(animation_library, animation_library_path)


func refresh_mesh_library(path_list: Array, from_editor_tool: bool = false):
	print("refresh_mesh_library")
	var default_shape_normal_full: Array[Variant] = [load("res://resource/mesh_library/default_shape_normal_full.tres") as Shape3D, Transform3D.IDENTITY]
	var default_shape_normal_half: Array[Variant] = [load("res://resource/mesh_library/default_shape_normal_half.tres") as Shape3D, Transform3D.IDENTITY]
	var default_shape_normal_stair1: Array[Variant] = [load("res://resource/mesh_library/default_shape_normal_stair1.tres") as Shape3D, Transform3D.IDENTITY]
	var default_shape_normal_stair2: Array[Variant] = [load("res://resource/mesh_library/default_shape_normal_stair2.tres") as Shape3D, Transform3D.IDENTITY]
	var default_shape_large_full: Array[Variant] = [load("res://resource/mesh_library/default_shape_large_full.tres") as Shape3D, Transform3D.IDENTITY]
	var default_shape_large_half: Array[Variant] = [load("res://resource/mesh_library/default_shape_large_half.tres") as Shape3D, Transform3D.IDENTITY]
	var default_shape_large_stair1: Array[Variant] = [load("res://resource/mesh_library/default_shape_large_stair1.tres") as Shape3D, Transform3D.IDENTITY]
	var default_shape_large_stair2: Array[Variant] = [load("res://resource/mesh_library/default_shape_large_stair2.tres") as Shape3D, Transform3D.IDENTITY]

	var mesh_library_main: MeshLibrary = load("res://resource/mesh_library/mesh_library_main.tres") as MeshLibrary
	var mesh_library_sub: MeshLibrary = load("res://resource/mesh_library/mesh_library_sub.tres") as MeshLibrary
	var mesh_library_deco1: MeshLibrary = load("res://resource/mesh_library/mesh_library_deco1.tres") as MeshLibrary
	var mesh_library_deco2: MeshLibrary = load("res://resource/mesh_library/mesh_library_deco2.tres") as MeshLibrary
	var mesh_library_chara: MeshLibrary = load("res://resource/mesh_library/mesh_library_chara.tres") as MeshLibrary
	var mesh_library_main_id_list: Array[int] = []
	var mesh_library_sub_id_list: Array[int] = []
	var mesh_library_deco1_id_list: Array[int] = []
	var mesh_library_deco2_id_list: Array[int] = []
	var mesh_library_chara_id_list: Array[int] = []

	var material_grid_block: Material = load("res://render/material/level_grid_block.tres") as Material
	var material_grid_mark_white: Material = load("res://render/material/level_grid_mark_white.tres") as Material
	var material_grid_mark_black: Material = load("res://render/material/level_grid_mark_black.tres") as Material
	var material_grid_mark_green: Material = load("res://render/material/level_grid_mark_green.tres") as Material

	var reimport_files: Array[String] = []
	for file_name_full in path_list:
		var mesh_name = file_name_full.get_file().split('-')[0].trim_suffix('.vox')
		if not mesh_name.contains("_"):
			continue
		var name_prefix = mesh_name.split("_")[0]

		var mesh_library: MeshLibrary
		var mesh_library_id_list: Array[int]
		var has_material: bool
		var has_shape: bool
		match name_prefix:
			"main":
				mesh_library = mesh_library_main; mesh_library_id_list = mesh_library_main_id_list; has_material = true; has_shape = true;
			"sub":
				mesh_library = mesh_library_sub; mesh_library_id_list = mesh_library_sub_id_list; has_material = true; has_shape = true;
			"deco1":
				mesh_library = mesh_library_deco1; mesh_library_id_list = mesh_library_deco1_id_list; has_material = true;
			"deco2":
				mesh_library = mesh_library_deco2; mesh_library_id_list = mesh_library_deco2_id_list; has_material = true;
			"chara":
				mesh_library = mesh_library_chara; mesh_library_id_list = mesh_library_chara_id_list;
			_: continue

		var mesh: Mesh = load(file_name_full) as Mesh
		var mesh_id: int = mesh_library.find_item_by_name(mesh_name)
		if mesh_id == -1:
			mesh_id = mesh_library.get_last_unused_item_id()
			mesh_library.create_item(mesh_id)
		mesh_library_id_list.append(mesh_id)
		mesh_library.set_item_name(mesh_id, mesh_name)
		mesh_library.set_item_mesh(mesh_id, mesh)

		if has_material:
			var material_set: Material = material_grid_block
			if mesh_name.contains("mark_black"):
				material_set = material_grid_mark_black
			elif mesh_name.contains("mark_white"):
				material_set = material_grid_mark_white
			elif mesh_name.contains("mark_green"):
				material_set = material_grid_mark_green
			if from_editor_tool:
				reimport_files.append(file_name_full)
			else:
				print("surface_set_material")
				mesh.surface_set_material(0, material_set)
				ResourceSaver.save(mesh, file_name_full)

		if has_shape:
			var item_shapes: Array
			var is_main = name_prefix == "main"
			var name_subfix = mesh_name.split("_")[-1]
			match name_subfix:
				"full": item_shapes = default_shape_normal_full if not is_main else default_shape_large_full
				"half": item_shapes = default_shape_normal_half if not is_main else default_shape_large_half
				"stair1": item_shapes = default_shape_normal_stair1 if not is_main else default_shape_large_stair1
				"stair2": item_shapes = default_shape_normal_stair2 if not is_main else default_shape_large_stair2
				"auto": item_shapes = [mesh.create_convex_shape(), Transform3D.IDENTITY]
				_: pass
			if item_shapes:
				mesh_library.set_item_shapes(mesh_id, item_shapes)

	_save_mesh_library(mesh_library_main, mesh_library_main_id_list, from_editor_tool)
	_save_mesh_library(mesh_library_sub, mesh_library_sub_id_list, from_editor_tool)
	_save_mesh_library(mesh_library_deco1, mesh_library_deco1_id_list, from_editor_tool)
	_save_mesh_library(mesh_library_deco2, mesh_library_deco2_id_list, from_editor_tool)
	_save_mesh_library(mesh_library_chara, mesh_library_chara_id_list, from_editor_tool)

	if from_editor_tool and reimport_files:
		EditorInterface.get_resource_filesystem().reimport_files(reimport_files)


func _save_mesh_library(mesh_library: MeshLibrary, id_list: Array[int], from_editor_tool: bool):
	if from_editor_tool:
		var ids: PackedInt32Array = mesh_library.get_item_list()
		for id in ids:
			if not id in id_list:
				mesh_library.remove_item(id)

	var meshes: Array[Variant] = []
	for id in id_list:
		meshes.append(mesh_library.get_item_mesh(id))
	var previews: Array[Texture2D] = EditorInterface.make_mesh_previews(meshes, 64)
	for i in range(len(id_list)):
		mesh_library.set_item_preview(id_list[i], previews[i])
	ResourceSaver.save(mesh_library)


func refresh_all_animation_by_sprite_frames(sprite_frames: SpriteFrames):
	var dir_path: String = "res://resource/skill_animation"
	var dir: DirAccess = DirAccess.open(dir_path)
	var sprite_frames_name: String = sprite_frames.resource_path.get_file().split('-')[0]
	for file in dir.get_files():
		var path: String = dir_path + "/" + file
		var res = load(path)
		if not res is Animation:
			continue
		var animation: Animation = res as Animation
		var sprite_frames_track: int = animation.find_track(NodePath("View:sprite_frames"), Animation.TYPE_VALUE)
		if sprite_frames_track < 0:
			continue
		var sprite_frames_track_key_count: int = animation.track_get_key_count(sprite_frames_track)
		if sprite_frames_track_key_count == 0:
			continue
		var sprite_frames_value: SpriteFrames = animation.track_get_key_value(sprite_frames_track, 0) as SpriteFrames
		var target_sprite_frames_name: String = sprite_frames_value.resource_path.get_file().split('-')[0]
		if sprite_frames_name != target_sprite_frames_name:
			continue
		var animation_track: int = animation.find_track(NodePath("View:animation"), Animation.TYPE_VALUE)
		if animation_track < 0:
			continue
		var animation_track_key_count: int = animation.track_get_key_count(animation_track)
		if animation_track_key_count == 0:
			continue
		var animation_value: String = animation.track_get_key_value(animation_track, 0) as String
		refresh_animation_by_sprite_frames(path, sprite_frames, animation_value, animation)
	Util.refresh_animation_lib()


func refresh_animation_by_sprite_frames(animation_path: String, sprite_frames: SpriteFrames, animation_name: String, animation: Animation) -> void:
	if not sprite_frames.has_animation(animation_name):
		print("动画不存在: ", animation_name)
		return
	var track_sprite_frames: int = animation.find_track(NodePath("View:sprite_frames"), Animation.TYPE_VALUE)
	if track_sprite_frames < 0:
		track_sprite_frames = animation.add_track(Animation.TYPE_VALUE)
		animation.track_set_path(track_sprite_frames, "View:sprite_frames")
		animation.track_insert_key(track_sprite_frames, 0, sprite_frames)

	var track_animation: int = animation.find_track(NodePath("View:animation"), Animation.TYPE_VALUE)
	if track_animation < 0:
		track_animation = animation.add_track(Animation.TYPE_VALUE)
		animation.track_set_path(track_animation, "View:animation")
		animation.track_insert_key(track_animation, 0, animation_name)

	var track_frame: int = animation.find_track(NodePath("View:frame"), Animation.TYPE_VALUE)
	if track_frame >= 0:
		animation.remove_track(track_frame)
	track_frame = animation.add_track(Animation.TYPE_VALUE)
	animation.track_set_path(track_frame, "View:frame")
	var animation_speed: float = Setting.animation_frame_rate
	var animation_frame_count: int = sprite_frames.get_frame_count(animation_name)
	animation.length = animation_speed * animation_frame_count
	for i in range(0, animation_frame_count):
		var time = i * animation_speed
		animation.track_insert_key(track_frame, time, i)
	animation.value_track_set_update_mode(track_sprite_frames, Animation.UPDATE_DISCRETE)
	animation.value_track_set_update_mode(track_animation, Animation.UPDATE_DISCRETE)
	animation.value_track_set_update_mode(track_frame, Animation.UPDATE_DISCRETE)
	print("refresh_animation: ", animation_name, "(", animation_frame_count, " frames)")
	ResourceSaver.save(animation, animation_path)


func get_all_skill() -> Array[SkillCfg]:
	var ret: Array[SkillCfg] = []
	var dir_path: String = "res://config"
	var dir: DirAccess = DirAccess.open(dir_path)
	for sub_dir_name: String in dir.get_directories():
		if not sub_dir_name.begins_with("skill_"):
			continue
		var sub_dir_path: String = dir_path + "/" + sub_dir_name
		var sub_dir: DirAccess = DirAccess.open(sub_dir_path)
		for file: String in sub_dir.get_files():
			var path: String = sub_dir_path + "/" + file
			var res = load(path)
			if res is SkillCfg:
				ret.append(res)
	return ret


func get_all_skill_player_weapon() -> Array[SkillWeaponCfg]:
	var ret: Array[SkillWeaponCfg] = []
	var dir_path: String = "res://config/skill_player_weapon"
	var dir: DirAccess = DirAccess.open(dir_path)
	for file: String in dir.get_files():
		var path: String = dir_path + "/" + file
		var res = load(path)
		if res is SkillWeaponCfg:
			ret.append(res)
	return ret


func get_all_skill_player_basic() -> Array[SkillWeaponCfg]:
	var ret: Array[SkillWeaponCfg] = []
	var dir_path: String = "res://config/skill_player_basic"
	var dir: DirAccess = DirAccess.open(dir_path)
	for file: String in dir.get_files():
		var path: String = dir_path + "/" + file
		var res = load(path)
		if res is SkillWeaponCfg:
			ret.append(res)
	return ret


func get_skill_player_weapon_by_weapon(weapon: WeaponCfg) -> Array[SkillWeaponCfg]:
	var ret: Array[SkillWeaponCfg] = []
	var dir_path: String = "res://config/skill_player_weapon"
	var dir: DirAccess = DirAccess.open(dir_path)
	for file: String in dir.get_files():
		var path: String = dir_path + "/" + file
		var res = load(path)
		if res is SkillWeaponCfg:
			if res.weapon == weapon:
				ret.append(res)
	return ret


func get_character_cfg_by_name(name: String) -> CharacterCfg:
	var path_default: String = "res://config/character/%s.tres" % name
	if ResourceLoader.exists(path_default):
		var res = load(path_default)
		if res is CharacterCfg:
			return res
	return null


func get_level_active_scene_by_name(name: String) -> PackedScene:
	var path_default: String = "res://scene/level_active/%s.tscn" % name
	if ResourceLoader.exists(path_default):
		var res = load(path_default)
		return res
	return null