loat Unit::CalculateLevelPenalty(SpellInfo const* spellProto) const
{
    if (spellProto->SpellLevel <= 0 || spellProto->SpellLevel >= spellProto->MaxLevel)
         return 1.0f;

     float LvlPenalty = 0.0f;

     if (spellProto->SpellLevel < 20)
         LvlPenalty = 20.0f - spellProto->SpellLevel * 3.75f;
     float LvlFactor = (float(spellProto->SpellLevel) + 6.0f) / float(getLevel());
     if (LvlFactor > 1.0f)
         LvlFactor = 1.0f;

     return AddPctF(LvlFactor, -LvlPenalty);
  return true;
}