void OnMouseUp()
{
//towerSprite.transform.position = curPosition;
if (isEmpty)
{
//Debug.Log("create");
//towerPrefabScript.
managerUIScript.downEnergy(energy);
Instantiate(towerPrefab, towerPosition, Quaternion.identity);
isEmpty = false;
//Instantiate(towerPrefab, getPosition(), Quaternion.identity);
}
//towerSpriteSelected.transform.position = gameObject.transform.position;
towerSpriteSelected.GetComponent <SpriteRenderer>().enabled = false;
isDrag = false;
}