1

I’m trying to destroy an object called “Spear” after it collides with the “ground”. But it just keeps going?

using UnityEngine;
using System.Collections;

public class LauncherScript: MonoBehaviour {

	void Update(){

		transform.Translate(Vector3.right*30 * Time.deltaTime, Space.World);
	}


	void OnCollisionEnter(Collision other) {
		if(other.collider.name == "ground")
		{
			Debug.Log("Collided");
			Destroy(other.gameObject);
		}
	}
}
3

I didn’t have a rigidbody on the spear. Plus the script was wrong.

I put

public class LauncherScript: MonoBehaviour {

	void OnCollisionEnter(Collision other) {
		if(other.collider.name == "Spear")
		{
			Debug.Log("Collided");
			Destroy(other.gameObject);
		}
	}
}

on the ground and

public class SpearLauncher : MonoBehaviour {

	void Update(){
		
		transform.Translate(Vector3.right*30 * Time.deltaTime, Space.World);
	}
}

on the spear

2

Try putting this in your “ground” object:

	void OnCollisionEnter (Collision col)
	{
		if(col.gameObject.name == "spear")
		{
			Destroy(col.gameObject);
		}
	}
}
4

You should be doing

if (col.GameObject.name == "Name Here")
{
Destroy (GameObject.find ("Other Name Here");
}