//Toggles the player's ability to click on the purchase button in order to purchase an upgrade
public void ToggleBuyButton()
{
if (!upgrade.reachedMax)
{
if (upgrade.CheckInventory(this.gameObject))
{
upgradeButton.interactable = true;
}
else
{
upgradeButton.interactable = false;
}
}
else
{
upgradeButton.interactable = false;
}
}