生存期变量对于子画面的所有实例都是相同的，而不是在实例化新实例时重置

Question

我正在编写一个游戏，当玩家冲进一个盒子时，它应该会破碎，而不是在一定时间后消失的碎片精灵。

using System.Collections;

使用系统。集合。泛型；使用UnityEngine

公共类破碎件：单行为{ // 开始在第一帧更新之前调用

public float moveSpeed = 3f;
private Vector3 moveDirection;

public float deceleration = 5f; 

public float lifetime = 3f;

public SpriteRenderer theSR;
public float fadeSpeed = 2.5f;


void Start()
{
    moveDirection.x = Random.Range(-moveSpeed, moveSpeed);
    moveDirection.y = Random.Range(-moveSpeed, moveSpeed);
}

// Update is called once per frame
async void Update()
{
    transform.position += moveDirection * Time.deltaTime;

    moveDirection = Lerp(moveDirection, Vector3.zero, deceleration * Time.deltaTime);

    lifetime -= Time.deltaTime;

    if(lifetime < 0)
    {
        theSR.color=new Color(theSR.color.r, theSR.color.g, theSR.color.b, Mathf.MoveTowards(theSR.color.a, 0f, fadeSpeed * Time.deltaTime));

        if(theSR.color.a == 0f)
        {
            Destroy(gameObject);
        }

        
    }
}

}

using System.Collections;

使用系统。集合。泛型；使用UnityEngine

public class Breakables:MonoBehaviour { public game object[]broken pieces；

public int maxPieces = 5;

public bool shouldDropItem;

public GameObject[] itemsToDrop;
public float itemDropPercent;
// Start is called before the first frame update
void Start()
{
    
}

// Update is called once per frame
void Update()
{
    
}

private void OnTriggerEnter2D(Collider2D other)
{
    if(other.tag == "Player")
    {
        if(PlayerController.instance.dashCounter > 0)
        {
        Destroy(gameObject);
         // show broken pieces
        int piecesToDrop = Random.Range(1, maxPieces);
       
        for(int i = 0; i < piecesToDrop; i++)
        {
            int randomPiece= Random.Range(0, brokenPieces.Length);

            Instantiate(brokenPieces[randomPiece], transform.position, transform.rotation);
        }

        // drop items
        if(shouldDropItem)
        {
            float dropChance = Random.Range(0f,100f);

            if(dropChance < itemDropPercent)
            {
                int randomItem = Random.Range(0, itemsToDrop.Length);

                Instantiate(itemsToDrop[randomItem], transform.position, transform.rotation);
            }
        }
        }
    }
}

}

Answer 1

所以你的实际误差与时间无关。

“游戏对象”类型的对象已被销毁，但您仍在尝试访问它。这个错误是在我打破盒子时出现的

这是因为你破坏了你的物体

Destroy(gameObject);

然后在它已经被摧毁后，尝试访问它的转换位置。

只需事先缓存位置和旋转

var position = transform.position;
var rotation = transform.rotation;
Destroy(gameObject);
// show broken pieces
int piecesToDrop = Random.Range(0, maxPieces) + 1;
   
for(int i = 0; i < piecesToDrop; i++)
{
    int randomPiece= Random.Range(0, brokenPieces.Length);

    Instantiate(brokenPieces[randomPiece], position, rotation);
}

或确保将

Destroy (gameObject);

这样它就不会在销毁它之后试图访问它的任何属性。