TouhouGD/script/ui/hud/core_item.gd

@tool
extends Control

@onready var core_item_list: Array[CoreItemSub] = [
											  $CoreItemFree/Up, $CoreItemFree/Left, $CoreItemFree/Down, $CoreItemFree/Right,
											  $CoreItemLock/Up, $CoreItemLock/Left, $CoreItemLock/Down, $CoreItemLock/Right,
											  ]
@onready var core_item_input_list: Array[InputItem] = [
											  $CoreItemInput/Up, $CoreItemInput/Left, $CoreItemInput/Down, $CoreItemInput/Right,
											  ]

@onready var core_item_free: Control = $CoreItemFree
@onready var core_item_lock: Control = $CoreItemLock

@export var is_switch: bool:
	set(value):
		is_switch = value
		is_switch_animation = true

@export var is_lock: bool:
	set(value):
		is_lock = value
		core_item_free.visible = not is_lock
		core_item_lock.visible = is_lock

@export var switch_animation_time_max: float = 0.1
var switch_animation_time: float = 0.0
var is_switch_animation: bool

@export var switch_center_pos1 = Vector2(560, 300)
@export var switch_center_pos2 = Vector2(480, 280)
var switch_item_pos1 = [
						Vector2(0, -16), Vector2(-24, 0), Vector2(0, 16), Vector2(24, 0),
						Vector2(0, -16), Vector2(-24, 0), Vector2(0, 16), Vector2(24, 0),
					]
var switch_item_pos2 = [
						Vector2(0, -32), Vector2(-32, 0), Vector2(0, 32), Vector2(32, 0),
						Vector2(0, -32), Vector2(-32, 0), Vector2(0, 32), Vector2(32, 0),
					]
var core_item_input_pos1 = Vector2(0, 0)
var core_item_input_pos2 = [
						Vector2(0, -16), Vector2(-16, 0), Vector2(0, 16), Vector2(16, 0),
					]

func _process(delta):
	if not is_switch_animation:
		return
	switch_animation_time += delta if is_switch else -delta
	switch_animation_time = max(0, min(switch_animation_time, switch_animation_time_max))
	var rate = switch_animation_time / switch_animation_time_max
	animation_lerp(rate)

	if switch_animation_time == switch_animation_time_max or switch_animation_time == 0:
		is_switch_animation = false


func on_core_active_list_changed(core_list: Array[CoreCfg]):
	for i in range(len(core_list)):
		var cfg: CoreCfg = core_list[i]
		var item: CoreItemSub = core_item_list[i] as CoreItemSub
		item.set_info(cfg)


func on_is_switch_changed(value: bool):
	is_switch = value


func on_is_lock_changed(value: bool):
	is_lock = value
	
func animation_lerp(rate: float):
	position = lerp(switch_center_pos1, switch_center_pos2, rate)
	for i in len(core_item_list):
		var item: CoreItemSub = core_item_list[i] as CoreItemSub
		item.position = lerp(switch_item_pos1[i], switch_item_pos2[i], rate)
		item.detail_rate = rate
	for i in len(core_item_input_list):
		var item: InputItem = core_item_input_list[i] as InputItem
		item.position = lerp(core_item_input_pos1, core_item_input_pos2[i], rate)
		item.detail_rate = rate