public void HotKeyDeletePress(Transform self)
    {
        SoundDatabase.PlaySound(21);
        int        selfIndex  = self.GetSiblingIndex();
        PanelSkill panelSkill = hotSkillPanel.transform.GetChild(selfIndex).GetComponent <PanelSkill>();

        panelSkill.cooldownCircle.fillAmount = 0;
        panelSkill.playerSkill = null;
        panelSkill.UpdateImage();
    }
    public void HotkeyAssignPress(Transform self)
    {
        SoundDatabase.PlaySound(32);
        int        selfIndex  = self.GetSiblingIndex();
        PanelSkill panelSkill = hotSkillPanel.transform.GetChild(selfIndex).GetComponent <PanelSkill>();

        panelSkill.playerSkill = currentSkill;
        panelSkill.UpdateImage();
        hotkeyAssign.SetActive(!hotkeyAssign.activeInHierarchy);
    }