public void UseSkill()
    {
        if (currentStamina < skillStamina)
        {
            PlaySound(ref failClip);                                    // play fail sound if player hasn't enough stamina
            return;
        }


        if (isStaminaFull)
        {
            isStaminaFull = false;
            staminaBar.BlueIcone(false);
        }

        Skill();                                                        // call function responsible for skill action

        currentStamina -= skillStamina;
        staminaBar.UpdateBar(currentStamina, maxStamina);

        if (isIncreaseWithTime && !isStaminaFull)
        {
            StartCoroutine(IncreaseWithTime());
        }
    }