OnCollision stuff, which one to use?

Hello, i have a Object A, which is moving, when Object A entering Object B, i want object B to be destroyed.

And the script have to be attacthed to object B

What do i do?

 

You'll probably want to use OnTriggerEnter () and set object B up with a rigid body that is kinematic. Is object B moving/a character? If so then OnCollisionEnter () makes sense, you just check against the tag or name of object B to be sure you don't destroy everything you touch!

 

keep in mind if you are using rigidbody2d and 2d colliders you have to use

working with 2d colliders as trigger

Code (CSharp):

1. OnTriggerEnter2D(Collider2D other) {}
2.  
3. OnTriggerStay2D(Collider2D other) {}
4.  
5. OnTriggerExit2D(Collider2D other) {}

working with 2d colliders (no trigger set)

Code (CSharp):

1. OnCollisionEnter2D(Collision2D other) {}
2.  
3. OnCollisionStay2D(Collision2D other) {}
4.  
5. OnCollisionExit2D(Collision2D other) {}

 

It's seems that I didn't do a good job with explain

I have 2 objects
3D Object A: Which is moving
3D Object B: Which is standing still, in mid air

The function im looking for: When Object A has entered Object B, i want Object B to be destroyed, and the script shall be attached on Object B

The current code for Object B, which is not working

Code (CSharp):

1. using UnityEngine;
2. using System.Collections;
3.  
4.  
5. public class delivery : MonoBehaviour {
6.     static int i = 0;
7.     // Use this for initialization
8.     void Start () {
9.    
10.     }
11.    
12.     // Update is called once per frame
13.     void Update () {
14.  
15.     }
16.  
17.  
18.  
19.     void OnTriggerEnter(Collider col)
20.     {
21.         if (col.gameObject.tag == "Player")
22.         {
23.             Destroy(gameObject);
24.             carSettings.pizzaAmount--;
25.  
26.         }
27.     }
28. }
29.  

The funny thing about this code, is if i attach the script on Object A, and check the tag, it works by deleting the player

 

show us inspector screenshot of object b.

do u use a rigidbody on it? kinematic? has it a collider (trigger)?

 

Here is the insceptors of the objects

 

object a has no collider, add one... this should help.

collisions can only be recognized if there are to collider hitting each other

 

There is tobad, im using the car from Unity3d version 5, so there should be colliders on the car

 

you have to look up in which child gameobject the colliders are and set theire tag to "Player"

or you have to change your OnTriggerEnter if(cold.gameObject.tag == "..." ) condition

 

I just narrowed it down, with which one is "touching" and i set it to Player tag, but didn't help

 

Code (CSharp):

1.     using UnityEngine;
2.     using System.Collections;
3.    
4.    
5.     public class delivery : MonoBehaviour {
6.         static int i = 0;
7.         // Use this for initialization
8.         void Start () {
9.      
10.         }
11.      
12.         // Update is called once per frame
13.         void Update () {
14.    
15.         }
16.    
17.    
18.    
19.         void OnTriggerEnter(Collider col)
20.         {
21.             Debug.Log(col.gameObject.name);
22.         }
23.     }
24.    
25.  

use this and look at your console

 

theres is nothing in the Log, when i run the code

 

Make sure the script is attached to the object?
Maybe you've removed it accidently or intentionally, but on your screenshot there isn't any script attached to Object B.

 

Suddoha, im not sure, if I didn't apply the script on.

So i deleted the Object B, and made a new one, a now its working with Toboad script

 

Great that it works now.
Then you simply forgot to attach it before. Scripts that you attach to a gameobject always appear as a component in the inspector when you select the gameobject. In your case it's the delivery script.