collider other.gameObject

Code (CSharp):

1. using System.Collections;
2. using System.Collections.Generic;
3. using UnityEngine;
4.  
5. public class DestroyByBoundary : MonoBehaviour
6. {
7.     void OnTriggerExit(Collider other)
8.     {
9.         Destroy (other.gameObject);
10.     }
11.  
12. }

This is a very simple code for boundary setting for my game

while practicing with this code

I got to have a question

for the first time I put like this "Destroy(other)"

What I had in my mind was there "other" means

any other colliders leaving the collider where this script is attached

of course the object I created as a laser bolt has its "Capsule Collider"

So I expected just with "other" inside "Destroy()" function

but It was not working correctly

why do i need to specify "gameObject" there?

 

Destroy(other) will just destroy the Collider you hit but nothing else.

Destroy(other.gameObject) will destroy the entire GameObject containing the collider you hit, and everything parented beneath it.

 

Thank you so much for your detailed explanation

 

You're welcome! It's helpful to think about Unity's organization of stuff: every single entry in your Hierarchy window is a GameObject, and Components are plugged into GameObjects.

Every GameObject has a Transform component, plus whatever other Components you put on it: Camera, Collider, Renderer, Light, your own scripts (Monobehaviors) etc.

And finally Components can have often Asset references plugged into them: Materials, Textures, Models, or references to other Components or GameObjects.