public void buildCannonTower()
{
if (fm.checkBalanceAgainst(data.CannonTowerPrice[0]))
{
fm.useMoney(data.CannonTowerPrice[0]);
int stubID = gameSceneController.getChosenStubNum();
Debug.Log("buildCannonTower at " + stubID);
BuildBtnGroup.SetActive(false);
Transform tower = stubList[stubID].GetComponent <StubBehavior>().buildCannonTower();
tower.GetComponent <BaseTowerBehavior>().setStubID(stubID);
int id = towerList.Count;
tower.GetComponent <BaseTowerBehavior>().setID(id);
towerList.Add(tower);
}
}