public void Upgrade()
{
TowerUpgrade tu = ActiveTower.GetComponent <TowerUpgrade>();
if (tu.CanUpgrade && resource.Money >= tu.Cost)
{
resource.Money -= tu.Cost;
tu.Upgrade();
upgrade.GetComponent <TileButton>().SetUpgradeImage();
}
else
{
Debug.Log("Don't have money to do this");
}
}
