lock a target after a few seconds

Questions & Answers
1

I like to lock a target based on Raycasthit, but it will change a ‘tag’ from the object AFTER a few seconds… if the RaycastHit exit, before 5 seconds, the ‘tag’ is not changed.

I have this code:

function Update () {

	var foundHit : boolean = false;
	var hit : RaycastHit;

		var fwd =  transform.TransformDirection (Vector3.forward);
		foundHit = Physics.Raycast(transform.position, fwd, hit);
	

	if (foundHit && hit.transform.tag != tagCheck) //&& !checkAllTags
		foundHit = false;

	if (foundHit)
	{
            // here is my problem. i need 5 seconds before execute....
            yield WaitForSeconds (5);   
             // ...the next line
		hit.collider.transform.tag = "lockEnemy";
		print ("Mudeia a tag para = lockEnemy");
	}
}

But, the line:

yield WaitForSeconds (5);

needs a coroutine to set properly… so how i can do this to work?

2

You have a few problems here. The major one is that you cannot yield inside of Update(). So you would need to create a coroutine to use yield. As an alternate you can use what I like to call a ‘timestamp’. I’m assuming what you want to happen is that the player needs to have an object in front of this game object continuously for 5 seconds in order to change the tag to ‘lockEnemy’. Here is some alternate code:

#pragma strict

var tagCheck = "Target";
var lockTime = 5.0;

private var locking = false;
private var timestamp = 0.0;
private var hit : RaycastHit;

function Update () {
     
    if (Physics.Raycast(transform.position, transform.forward, hit) && (hit.transform.tag == tagCheck)) {
    	if (!locking) {
    		locking = true;
    		timestamp = Time.time + lockTime;
    	}
    }
    else {
    	locking = false;
    }

    if (locking && Time.time >= timestamp) {
       hit.collider.transform.tag = "lockEnemy";
       print ("Mudeia a tag para = lockEnemy");
    }
}