How to destroy a light after collision

Physics
1

Hiya, I am trying to figure out how to destroy a light on collision, basically its a ball with a light attached to it, and im not sure how to write a script for the light to destroy once it collides with anything. Anyone got any ideas?

2

112 posts and you haven’t yet read the docs? :shock:

3

Well im not sure what im doing wrong but

var ToDestroy : GameObject ;

function OnCollisionEnter(collision : Collision) {
 for (var contact : ContactPoint in collision.contacts) {
    Destroy (gameObject);
	}
}

It should work, ive attached the light to ToDestroy.
What did i do wrong?

4

I don’t really know what the contact point part is for, and I’m assuming that you want to destroy “toDestroy” (which can’t have a capital letter first), so I think this would do it

var toDestroy : GameObject ;
function OnCollisionEnter(collision : Collision) {
    Destroy (toDestroy);
}

that would destroy the light(if your light is a seperate gameObject) when whatever this script is attached to collides. If you want to destroy the light component of the gameObject, it would be

function OnCollisionEnter(collision : Collision) {
    Destroy (light);
}

if you’re wondering what you did wrong, it would be the variable, the for loop which is useless, and the fact that Destroy(gameObject) destroys whatever this script is attached to.

5

hurray, thanks btm, now the light destroys on collsion, thanks bro :stuck_out_tongue:

6

You’re attaching this script to the object that the lightball is colliding with, correct? Make sure the lightball thingy has a tag of lightball assigned. Then try the following.

Function OnCollisionEnter(collision : Collision) {

if (collision.gameObject.CompareTag ("Lightball")) {
        Destroy (collision.gameObject);
    }

}

I’m not sure why you were collecting the contact information. If you are simply destroying the object why do you need that information? You spawning a prefab at the collision point or something?

If you don’t really need the detailed collision information a trigger would be more performant. In fact if you look at the docs for triggers.

// Destroy everything that enters the trigger
function OnTriggerEnter (other : Collider) {
    Destroy(other.gameObject);
}

It’s script does exactly what you want.

7

Yeah i get it now, the script turned out to be really simple, just

var todestroy : GameObject ; 
function OnCollisionEnter(collision : Collision) { 
    Destroy (todestroy); 
}

Thanks for your help (:

8

Well the only problem with that script, is that the lightball thingy will be destroyed no matter what collides with your target. That’s why I compared tags in the example I gave you.

If your lightball is the only thing moving about, then that’s not really an issue.

9

Thats the beauty of that script, its exactly what i wanted, to be destroyed if it hits any single thing, but i will definetly be using what you said for other occasions if ever needed :stuck_out_tongue: