DestroyByContact.cs

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class DestroyByContact : MonoBehaviour
{
    public int damage = 1; //how much damage will be done
    public GameObject deathEffect;

 
    void OnTriggerEnter2D(Collider2D hitInfo) //the whole script damades a player when the coresponding gameobject collides with it, and destroys that gameobject as a result
    {
        PlayerHealth player = hitInfo.GetComponent<PlayerHealth>(); //checks for the player health script
        if (player != null)
        {
            player.TakeDamage(damage); //damages the player when collided with it
            Destroy(gameObject); //destorys whatever object this is attached too
            Instantiate(deathEffect, transform.position, Quaternion.identity); //creates an explosion
        }
        
        

    }
}