Only the first enemy is taking damage

Questions & Answers
1

Hello guys
I want to make a game with a stationary player and enemies moving towards the player. When the enemy hits the player they will attack each other. It works with one enemy but when I duplicate the enemy the player only attacks the first one and the second one never takes damage…

This is my EnemyHealth script:

public class EnemyHealth : MonoBehaviour
{
    public float health;
    public float maxHealth = 10f;
    public Image healthBar;

    // Start is called before the first frame update
    void Start()
    {
        health = maxHealth;
    }

    public void TakeDamage(float damage)
    {
        health -= damage;
        healthBar.fillAmount = health / maxHealth;
        if(health <= 0)
        {
            Destroy(gameObject);
        }
    }
    
}

And here is the PlayerDamage script:

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

public class PlayerDamage : MonoBehaviour
{
    public EnemyHealth enemyHealth;
    public float damage = 3f;
    public float atkSpeed = 1.0f;
    private float elapsedTime;
    private bool canAttack;

    void OnTriggerEnter2D(Collider2D trig)
    {
        if(trig.gameObject.CompareTag("Enemy"))
        {
            canAttack = true;
        }
        else
        {
            canAttack = false;
        }
    }
    
    void Update()
    {
        if(canAttack && enemyHealth != null)
        {
            elapsedTime += Time.deltaTime;
            if(elapsedTime > atkSpeed)
            {
                enemyHealth.TakeDamage(damage);
                elapsedTime -= atkSpeed;
            }
        }
    }
}

I’ve done some research on the topic and found out that I need to interact with the separate enemy’s health instead of a single. Currently the script focuses on the “overall” EnemyHealth() but I want it to interact with the specific enemy’s EnemyHealth()
I just can’t figure out how to implement it in my project…
Here is the discussion I found I can't kill more copies of the same enemy?

Hope someone can help!

2

Well, it’s because you are using the reference to a single enemy (your public EnemyHealth enemyHealth;). You need to retrieve the actual enemy reference from the collision, by using GetComponent method. Since you’d be getting the enemy reference from the gameObject, there’s no need to use tags at all.