Where can a Lerp be used?

Questions & Answers
1

I’m trying to make a lerp for one of my enemies once its trigger is activated. So I have to put it in the function that dictates that, which is a collision function.

Does lerp only work in function Update? Or do I have something wrong?

Here are the relevant parts of my script:

var thePrefab: GameObject;
var enemyActive : boolean = true;
var jelReg : Material;
var jelShock : Material;
var duration = 60.0;

private var coin : GameObject;
private var player : PlayerScript;

function Start(){
player = GameObject.FindWithTag("Player").GetComponent(PlayerScript);
renderer.material = jelReg;
}

function Update () {
}


function OnCollisionEnter(theCollision : Collision){
	if(player.Diamond == true){
		Destroy(gameObject.transform.root.gameObject);
		coin = Instantiate(thePrefab, transform.position, Quaternion.identity);
	}
	if(player.Diamond == false){
		if(theCollision.gameObject.tag == "Player"){
			yield WaitForSeconds(2);
			gameObject.collider.isTrigger = true;
			enemyActive = true;

			var lerp : float = Mathf.PingPong (Time.time, duration) / duration;
			renderer.material.Lerp (jelReg, jelShock, lerp);

			yield WaitForSeconds(3);
			gameObject.collider.isTrigger = false;
			renderer.material = jelReg;
			enemyActive = false;
		}
	}
}

it’s probably something small, or that lerps just can’t be used outside of the update function. Whatever the case, please help!

2

OnCollisionEnter gets called only, you guessed it, on collision enter. it gets executed once.

lerping is a process over time, so you will need a way to constantly update the lerp over time. An update or fixed update is the perfect place to do this.

have a read here, it describes it a little bit better.

3

have you tried on collision enter, then on collision stay. [Unity - Scripting API: Collider.OnCollisionStay(Collision)][1]