团结-摧毁一个重复的敌人导致可以'不要再攻击了

Question

我创建了一个；游戏"；在那里你可以用剑攻击敌人。所有伤害只适用于一个敌人，即使我攻击另一个。同样，当我销毁第一个我得到这个消息

MissingReferenceException：类型为"RectTransform"的对象已被销毁，但您仍在尝试访问它。

如何修复它？这是我的代码：

附属于敌方

public class EnemyHealth : MonoBehaviour
{
private Transform healthBar;
private Transform canvas;
public float maxHealth = 100f;
public float damage = 10f;
float currentHealth;
float barLength;
private void Start()
{
currentHealth = maxHealth;
GameObject gfx = gameObject.transform.Find("GFX").gameObject;
canvas = gfx.transform.Find("Health Bar");
GameObject canv = canvas.gameObject;
healthBar = canv.transform.Find("Green Bar");
barLength = canvas.GetComponent<RectTransform>().rect.width * canvas.localScale.x;
}
public void GetStruck()
{
currentHealth -= damage;
if (currentHealth < 0) currentHealth = 0;
healthBar.localScale = new Vector3(currentHealth / maxHealth, 1f, 1f);
Vector3 p = healthBar.position;
p -= damage / (maxHealth * 2) * barLength * transform.right * -1;
healthBar.position = p;
if(currentHealth == 0)
{
Destroy(gameObject);
}
}
}

和剑攻击

using UnityEngine;
public class SwordAttack : MonoBehaviour
{
public Animator animator;
private EnemyHealth enemyHealth;
private bool isAttacking;
private void Start()
{
enemyHealth = GameObject.FindGameObjectWithTag("Enemy").GetComponent<EnemyHealth>();
}
void Update()
{
if(Input.GetMouseButtonDown(0))
{
isAttacking = true;
animator.Play("swordSwing", -1, 0f);
}
else if(animator.GetCurrentAnimatorStateInfo(0).normalizedTime > 1)
{
isAttacking = false;
}
animator.SetBool("isAttacking", isAttacking);
}
private void OnTriggerEnter(Collider other)
{
if(isAttacking && other.CompareTag("Enemy"))
{
enemyHealth.GetStruck();
}
}
}

Answer 1

private void Start()
{
enemyHealth = GameObject.FindGameObjectWithTag("Enemy").GetComponent<EnemyHealth>();
}

这是你的错误。你在开始时只得到1个敌人的生命值，而且你的生命值总是在减少。相反，你可以在OnTriggerEnter方法中获得被击中敌人的生命值，并对该敌人施加伤害。