void attack()
{
if (dna.GetTowerGene(0) != Vector3.zero)
{
if (Vector3.Distance(transform.position, dna.GetTowerGene(0)) < 30.0f)
{
gun.transform.LookAt(dna.GetTowerGene(0));
gun.Shoot();
hitTower = true;
dna.Clear();
for (int i = 0; i < 4; i++)
{
gameObject.transform.GetChild(1).gameObject.transform.GetChild(0)
.gameObject.transform.GetChild(i).gameObject.GetComponent <Renderer> ().material.color = Color.red;
}
}
}
}