public void AddXP(int exp)
    {
        mSumXP += exp;

        ExpText.text = $"{mSumXP}XP";

        XPChangeEvent?.Invoke(mSumXP);
    }
    public bool SubtractXP(int exp)
    {
        if (mSumXP - exp >= 0)
        {
            mSumXP -= exp;

            ExpText.text = $"{mSumXP}XP";

            XPChangeEvent?.Invoke(mSumXP);

            return(true);
        }
        return(false);
    }