public void UseItem(BaseCharacterEntity characterEntity, short itemIndex, CharacterItem characterItem)
{
if (!characterEntity.CanUseItem() || characterItem.level <= 0 || !characterEntity.DecreaseItemsByIndex(itemIndex, 1))
{
return;
}
characterEntity.FillEmptySlots();
characterEntity.ApplyBuff(DataId, BuffType.PotionBuff, characterItem.level, characterEntity.GetInfo());
characterEntity.RewardExp(new Reward()
{
exp = Exp
}, 1, RewardGivenType.None);
}