Question

我不知道我做错了什么是2D项目有两个对象。一个有RigidBody2D和BoxCollider2D组件。第二个对象只有BoxCollider2D。当按下按钮Object1再次落在Object2和Destroy以及Instantiate Object1时，会有一个按钮。但是当Object1 Instantiate然后点击按钮不起作用。错误就像这样：

The object of type Rigidbody2D has been destroyed but you are still trying to access it. Your script should either check if it is null or you should not destroy the object.

对象1：

对象2：

按钮点击：

对象1脚本：

public class Object1 : MonoBehaviour {

    public static Object1 instance;

    [SerializeField]
    private Rigidbody2D body;

    [SerializeField]
    private bool hasdropped;

    [SerializeField]
    private bool click;

    [SerializeField]
    private float PointerPos;

    [SerializeField]
    private float BorderX;

    void Awake(){

        if (instance == null) {

            instance = this;
        }

        //take width of screen
        Vector3 gameScreen = Camera.main.ScreenToWorldPoint(new Vector3(Screen.width, Screen.height,0));

        BorderX = gameScreen.x - 0.6f;




        body.isKinematic = true;
        click = true;
        hasdropped = true;


    }



    void FixedUpdate () {

        if (click) {

            Vector3 temp = transform.position;

            PointerPos = Camera.main.ScreenToWorldPoint(Input.mousePosition).x;

            temp.x = Mathf.Clamp(PointerPos,-BorderX,BorderX);

            body.position = temp;

            if(hasdropped){
                return;

            }

        }


    }

    public void ButtonClick(){

        body.isKinematic = false;

    }


}

对象2脚本：

public class Object2 : MonoBehaviour {

    [SerializeField]
    private GameObject BallClone;




    void OnCollisionEnter2D(Collision2D target){

        Destroy (target.gameObject);

        Instantiate (BallClone,new Vector3(0f,2f,59f),Quaternion.identity);


    }

}

Answer 1

问题是您在ClickButton On Click（）上引用了Object1Prefab（活动对象，而不是预制件）。（但参考预制件根本不起作用）

由于你销毁它，你错过了链接。（检查一下：选择层次结构上的ClickButton对象，有脚本引用，对吗？单击游戏按钮一次。现在取消选择并再次选择层次结构上的ClickButton对象......它已经消失了。）

尝试创建一个监听器或将ButtonClick（）方法放在object2中（你不会破坏）：

using UnityEngine;
using System.Collections;

public class Object2 : MonoBehaviour {

    [SerializeField]
    private GameObject BallClone;

    public GameObject mine;


    void OnCollisionEnter2D(Collision2D target){

        Destroy (target.gameObject);

        mine = Instantiate (BallClone,new Vector3(0f,2f,59f),Quaternion.identity) as GameObject;


    }




public void ButtonClick(){
//this is just an example. You might wanna to cache this info for better practice and not call GetComponent all the time
            mine.GetComponent<Rigidbody2D> ().isKinematic = false;
        }




}

1-将GameObject1Prefab（实时对象）拖到＆＃34; mine＆＃34;上的Object2脚本领域。参考public GameObject mine。

第一次点击你要摧毁它，并创建一个新的，然后在线上再次以编程方式引用新的：

mine = Instantiate (BallClone,new Vector3(0f,2f,59f),Quaternion.identity) as GameObject;

在ClickButton对象上，你可以在On Click（）上拖动GameObject2，而不是1。

这是否清楚？对不起我的英文。：〜

按钮单击无法正常工作

1 个答案: