Unity实例化错误

Question

I've created a script that should spawn enemies in some time, and it works perfectly. However, for some reason it shows errors, even then it spawns enemies like it should.

代码：

public class Spawner : MonoBehaviour
{

    [SerializeField]
    private GameObject[] meteors;

    public GameObject meteor1;

    private float TimeBetweenSpawns;
    public float StartTimeBetweenSpawn = 1f;

    public float MaxY = 4.0f;
    public float MinY = -4.0f;
    float yPos;
    

    float MinTime = 1f;
    float MaxTime = 5f;

    private Vector3 spawnPos;

    // Start is called before the first frame update

    void Start()
    {
        
    }

    // Update is called once per frame
    void Update()
    {
        //ChangeSpawnTimes();

        

        yPos = Random.Range(MinY, MaxY);
        spawnPos = new Vector3(transform.position.x, yPos, transform.position.z);


        int WhichMeteor = 0;
        int WhichMeteorRandom = Random.Range(1, 10);
        if(WhichMeteorRandom > 8)
        {
            WhichMeteor = 0;
        }
        else
        {
            WhichMeteor = 1;
        }
        Debug.Log(WhichMeteor.ToString());
        if (TimeBetweenSpawns <= 0)
        {
            Instantiate(meteors[0], transform.position, transform.rotation);

            //float Time = Random.Range(1f,5f);

            TimeBetweenSpawns = 1f;
        }
        else
        {
            TimeBetweenSpawns -= Time.deltaTime;
        }
    }

    private void ChangeSpawnTimes()
    {
        
        Debug.Log(Points.points);
    }
}

错误

如果我尝试仅添加1个Metor而不是数组，只需创建gameObject再次向Inspector添加prefab再次显示出错误，但可以按照原样的速度工作，即它及时催生敌人。

Instantiate(meteor1, transform.position, transform.rotation);

我的错误在哪里？

Answer 1

似乎您的代码中有一个数组＆amp;您正在尝试访问其不存在的索引之一。

例如：

int[] r;
r[0] = 5
r[1] = 4;

// Error Happens Here
print(r[2]);

错误是因为r [2]为null＆amp;未定义。因此，解决方案是在尝试访问该索引之前检查索引是否未零。