public void UpgradeAction()
{
//inverse active
active = !active;
//perform active or inactive action
if (active)
{
//check if upgrade can be bought
if (upgrade.CanBuyUpgrade(true, ID))
{
//subtract gold amount, and apply upgrade
overlord.SubtractGold(cost);
activeAction();
}
}
else
{
//return gold and deactivate
overlord.AddGold(cost);
deactiveAction();
}
}