making an object stop responding with an object at a certain distance away

Question

i have a turret aiming at my character, how do i get it to stop when my character is at a certain distance?

var LookAtTarget:Transform;

var damp = 6.0;

var laserPrefab:Transform;

var savedTime=0;

function Update () {
if(LookAtTarget) { var rotate = Quaternion.LookRotation(LookAtTarget.position - transform.position);

transform.rotation = Quaternion.Slerp(transform.rotation, rotate, Time.deltaTime * damp);

 var seconds : int = Time.time;
 var oddeven = (seconds % 2);

 if(oddeven)
 {       
     Shoot(seconds);
 }

} function Shoot(seconds) { if(seconds!=savedTime) { var laser = Instantiate(laserPrefab ,transform.Find("bang").transform.position, Quaternion.identity); laser.gameObject.tag = "Untagged";
laser.rigidbody.AddForce(transform.forward * 10000);

    savedTime=seconds;
}

}

thanks :D

Answer 1

Best Answer

Answer by The_r0nin · Dec 26, 2010 at 01:05 AM

Add in the Update function:

if (Vector3.Distance(lookAtTarget.position,transform.position) <= 10){

 // your code here.

Two points of advice. First, naming conventions in Unity/Javascript usually begin variables with a lowercase letter and functions with an uppercase one (i.e. lookAtTarget, as opposed to LookAtTarget()...). It will help you keep track of what you are doing (and you'll be surprised at how easy it is to lose track).

Second, you might want to test against the square of the distance you want rather than the distance. Every square root sucks up more computing power, and the end result is the same. Your code would look like:

if ((lookAtTarget.position-transform.position).sqrMagnitude <= 100){ // 100 is 10 squared

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oinkoinkflapflap · Dec 29, 2010 at 03:30 PM 0

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yeah i do know how easy it is 2 lose track, haha, god scripting is confusing!!!! thanks 4 the help and pointers, :D

oinkoinkflapflap · Dec 29, 2010 at 03:32 PM 0

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oh you say // your code here, is that the code i posted as a question??

The_r0nin · Dec 30, 2010 at 02:54 AM 0

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Yes. Check the distance, then have it rotate to your character (put everything in your Update function in this).

The_r0nin · Dec 30, 2010 at 02:55 AM 0

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Also, if this works for you, click the checkmark next to the answer so everyone will know that it is solved.

oinkoinkflapflap · Jan 30, 2011 at 08:33 PM 0

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the only problem is that it says error "expecting "(" found "Update" :/

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making an object stop responding with an object at a certain distance away

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