How can I delay the cast of a fireball as well as destroy a gameobject mid script

Questions & Answers
1

So I have this script launch a fireball on a 3 second cooldown, that works fine. Im trying to implement a cast time by spawning a flame object that lasts 1.5 secs then disapears as the fireball is cast. I keep getting the most retarded error ever so i assume im writing it way wrong…

#pragma strict

public var missileObject:GameObject;
public var throwForce:float = 10;
private var canFire : boolean = true;
public var flameObject:GameObject;
public var fireAnchor:GameObject;

function Start () {

}

function Update () {
	if(Input.GetKeyDown("2") && canFire){
			var newFlame:GameObject = Instantiate(flameObject,fireAnchor.transform.position, fireAnchor.transform.rotation);
			yield WaitForSeconds (1.5)
				Destroy newFlame:GameObject;
			var newMissile:GameObject = Instantiate(missileObject, this.transform.position, this.transform.rotation);
				Physics.IgnoreCollision(newMissile.collider, this.transform.parent.collider);
				newMissile.rigidbody.AddForce(throwForce * this.transform.forward, ForceMode.Impulse);
	canFire = false;
		Reload();	
	}
}

function Reload (){
	yield WaitForSeconds (3);
		canFire = true;
		
}
2

You need to do:

 Destroy(newFlame);

But also you cannot yield inside an Update function - as you see with the Reload - in fact you are better off putting all of the stuff inside the if inside reload now:

 function Update () {
    if(Input.GetKeyDown("2") && canFire){
         
       FireAndReload(); 
    }
}
 
function FireAndReload (){
         canFire = false;

         var newFlame:GameObject = Instantiate(flameObject,fireAnchor.transform.position, fireAnchor.transform.rotation);
         yield WaitForSeconds (1.5)

         Destroy(newFlame);

         var newMissile:GameObject = Instantiate(missileObject, this.transform.position, this.transform.rotation);
         Physics.IgnoreCollision(newMissile.collider, this.transform.parent.collider);
         newMissile.rigidbody.AddForce(throwForce * this.transform.forward, ForceMode.Impulse);

         yield WaitForSeconds (3);
         canFire = true;
 
}
3

This was the final script I ended up using, still a slight issue with the instantiating of the 1st flame effect as it doesnt follow the character, though its only alive for a second so not to bad but rest of it works fine.

#pragma strict

public var missileObject:GameObject;
public var throwForce:float = 10;
private var canFire : boolean = true;
public var flameObject:GameObject;
public var fireAnchor:GameObject;
public var fireballCast:AudioClip;
public var fireballLaunch:AudioClip;



function Start () {

}

function Update () {
	if(Input.GetKeyDown("2") && canFire){   //Press 2 key in game to initiate script
			
	FireandReload();	//Calls the below function
	}
}

function FireandReload (){
	var newFlame:GameObject = Instantiate(flameObject,fireAnchor.transform.position, fireAnchor.transform.rotation); //Instantiates the flame effect on the players hands
		audio.PlayOneShot (fireballCast);
			yield WaitForSeconds (1);
				Destroy (newFlame); //Destroys flame effect
	var newMissile:GameObject = Instantiate(missileObject, this.transform.position, this.transform.rotation); //Instantiates the fireball in front of the player
		Physics.IgnoreCollision(newMissile.collider, this.transform.parent.collider); //Stops the fireball colliding with the player
			newMissile.rigidbody.AddForce(throwForce * this.transform.forward, ForceMode.Impulse); //Propels the fireball forwards
				audio.PlayOneShot(fireballLaunch);
		canFire = false; //Script can now no longer player again
			yield WaitForSeconds (3);
		canFire = true; //After 3 second delay script is reset
		
}