public void UpdateDisplay()
{
if (isItem)
{
itemBack.color = Color.white;
cost.text = player.GetItem(itemId).Quantity.ToString();
}
else
{
if (player.CheckCost(skillCost, costType))
{
itemBack.color = Color.white;
itemBack.sprite = skillBackImg;
}
else
{
itemBack.color = disabled;
itemBack.sprite = skillBackImgDisabled;
}
}
}