public void Init(BackpackUI backpackUI)
{
this.backpackUI = backpackUI;
item_name = transform.Find("name").GetComponent <Text>();
item_attr = transform.Find("attr").GetComponent <Text>();
item_desc = transform.Find("desc").GetComponent <Text>();
item_type = transform.Find("type").GetComponent <Text>();
item_img = transform.Find("img").GetComponent <Image>();
buttons_group = transform.Find("buttons");
print("ui panel init done");
}