New AI simple problem

Unity Engine
1

In my AI code the enemy need to move around and shot,that’s my code:

var speed: float=20;
var rotateSpeed:float=50;
var direction:int=1;
var speed_rock = 150.0;

function FireRocket () 
{
	 yield WaitForSeconds(2);
	var bullet = GameObject.CreatePrimitive(PrimitiveType.Cube);
        bullet.AddComponent(Rigidbody);
	bullet.transform.position = transform.position;
	bullet.transform.rotation= transform.rotation;
bullet.rigidbody.velocity = transform.forward * speed_rock * -1;
	bullet.rigidbody.mass = 3;
   }

function Update()
{
derection=Random.Range(-1,1);
if(!Physics.Raycast(transform.position,transform.forward,5))
{
transform.Translate(Vector3.forward*speed*Time.smoothDeltaTime);
}
else
{
transform.Rotate(Vector3.up,90*rotateSpeed*Time.smoothDeltaTime*direction);
}
FireRocket ();
}

When I test it out the enemy shots like a crazy:shock:.How can i make a time control to the shot?(one shot per time)

2

Don’t call FireRocket() every Update(). Either throttle calls to FireRocket() or, since you fire constantly, make FireRocket loop (wrap the body of the function in “while (true) { … }” for example) and call it just once from Start() or OnEnabled().