我在Unity中进行一个项目，并创建了一个名为DeerHater的脚本，用于定位进入指定区域的对象的变换和控制器。这个脚本本身是可以工作的，但它连接到一个父对象上，该父对象附带了控制器，而这个控制器应该访问DeerHater的变量并执行指定的功能。

问题在于，当目标对象进入触发器后，控制器中的变量并没有从空值变为DeerHater中已更改的变量，并且显示以下两个错误：

NullReferenceException: 对象引用未设置到对象的实例

MissingFieldException: DeerController.targetDeer

由于我完全是初学者，我实在看不出问题出在哪里，有人能告诉我为什么无法访问DeerHater的变量吗？

BearController脚本（父对象）：

var distanceDeer : float;var deerHater : DeerHater;var deer : GameObject = null;var targetDeer : Transform;var isFollowing : boolean = false;var center : Transform;var deerKilled : boolean = false;function Start(){    deerHater = GameObject.Find("DeerHater").GetComponent(DeerHater);}function Update(){    deer = deerHater.deerController.    targetDeer = deerHater.stupidDeer;    distanceDeer = Vector3.Distance(deerHater.stupidDeer.position, transform.position);if(deerHater.collisionDeer == true)    {        ChaseDeer();        if(distanceDeer < attackRange)        {            deer.health = -0.1;            deerKilled = true;        }        if(deerKilled == true)        {            GoBack();            deerKilled = false;        }    }}function ChaseDeer(){    var rotation = Quaternion.LookRotation(deerHater.stupidDeer.position - transform.position);    transform.rotation = Quaternion.Slerp(transform.rotation, rotation, Time.deltaTime * damping);    moveSpeed = 6;    animation.Play("Run");    animation["Run"].speed = 1.25;    moveDirection = transform.forward;    moveDirection *= moveSpeed;    isFollowing = true;    moveDirection.y -= gravity * Time.deltaTime;        controller.Move(moveDirection * Time.deltaTime);}

这是DeerHater脚本：

#pragma strictvar stupidDeer : Transform;var deerController : DeerController;public var collisionDeer : boolean = false;function OnTriggerEnter(col : Collider){    if(col.gameObject.tag == "Deer")    {        collisionDeer = true;        stupidDeer = col.gameObject.transform;        deerController = col.gameObject.GetComponent(DeerController);    }}function OnTriggerExit(col : Collider) {    if(col.gameObject.tag == "Deer")    {        collisionDeer = false;        stupidDeer = null;        deerController = null;    }}

提前感谢！

回答：

我已经通过将DeerHater代码放入BeerController中，并将鹿的变量从全局变量移动到if(deerCollision == true)中来解决这个问题了。