Trigger not Working

Unity Engine
1 
var target : Transform;
var raisedHeight = 5.5;
private var startHeight : float;

function Start () {
startHeight = target.transform.position.y;
}

function OnTriggerEnter (other : Collider) {
if(other.gameObject.tag == ("Player" || "Crate")){
	target.transform.position.y = raisedHeight;
}
}

function OnTriggerExit (other : Collider) {
if(other.gameObject.tag == ("Player" || "Crate")){
	target.transform.position.y = startHeight;
}
}

This is for a button that lifts a door. Works fine with the player, but not with the crate. Everything is tagged correctly.

Any ideas?

2

This is probably not the right answer. But what happens when you put a rigid body onto the crate, set its mass to 0 and turn use gravity off?

3

IsTrigger checked?

4

It already has a rigidbody, and I need it to use gravity.

5

Yes. As i said it works fine with the player.

6

Okay just trying to help… Is the size of your collider big enough so that they are intersecting?

7

Have you tried using other.tag instead of other.gameObject.tag? The example I learned from doesn’t include gameObject. Maybe the gameObject of the crate isn’t tagged but something lower in the hierarchy is.

8

the crate is literally a cube with a rigidbody attached. it is what is tagged.

9

Have to ask the obvious questions since its not working…

10

I understand.

11

You know that a Collider that is set as a trigger doesn’t respond to gravity right, or any physics for that matter.

12

I meant the crate, not the trigger.

Sorry for the confusion.

13

I know you’re talking about the crate… What’s your object hierarchy?

You have a few contradicting statements here…

  1. You say you want your crate to respond to gravity, so it has a rigidbody, and I assume a box collider. Thats fine, but non-trigger colliders dont respond to trigger events, only collision.

  2. You dont want it to fall through the ground, so it cant be a trigger, unless you have setup a compound collider system, but since you said its a crate with a rigidbody, I doubt this.

14

I’m confused. if it has to be a trigger to work, than this is completely useless because it needs to use collision for my purposes.

Also, the player is not a trigger, so the crate should not have to be either, if im understanding correctly.

15

Correct.

Easy fix is to use Collision event… its pretty similiar to OnTriggerEnter…

16

But I dont want to use a collision event. I dont want it to actually look like its hitting anything. I dont understand why it works with the player but not the crate.

17

I suggest you go and read this page.

http://docs.unity3d.com/Documentation/Manual/Physics.html

what you want can be done.

18

Ok, well this does nothing whatsoever but return errors:

var target : Transform;
var raisedHeight = 5.5;
private var startHeight : float;

function Start () {
startHeight = target.transform.position.y;
}

function OnCollisionEnter (Collision : Collider) {
if(Collision.gameObject.tag == ("Player" || "Crate")){
	target.transform.position.y = raisedHeight;
}
}

function OnCollisionExit (Collision : Collider) {
if(Collision.gameObject.tag == ("Player" || "Crate")){
	target.transform.position.y = startHeight;
}
}

Help?

19

Scratch that, stupid error on my part.

New code:

var target : Transform;
var raisedHeight = 5.5;
private var startHeight : float;

function Start () {
startHeight = target.transform.position.y;
}

function OnCollisionEnter (other : Collision) {
if(other.gameObject.tag == ("Player" || "Crate")){
	target.transform.position.y = raisedHeight;
}
}

function OnCollisionExit (other : Collision) {
if(other.gameObject.tag == ("Player" || "Crate")){
	target.transform.position.y = startHeight;
}
}

No errors, but it still does nothing.

20

Your setup is still not clear, but i also think that the questions asked by others arent clear
the create needs a rigidbody (with gravity), and not a trigger
then this ‘button’ which has the posted script must not be rigidbody, but is a trigger.

lastly it seems you still didnt read the docs:

function OnTriggerEnter (other : Collider) {
you have
function OnCollisionEnter (other : Collision) {