Question

您能告诉我如何从另一个脚本访问脚本的变量吗？我甚至已经阅读了统一网站上的所有内容，但我仍然无法做到。我知道如何访问另一个对象而不是另一个变量。

情况如下：我在脚本 B ，我想从脚本 A 访问变量X。变量X为boolean。你能救我吗？

顺便说一下，我需要在脚本 B 中更新X的值，我该怎么做？在Update函数中访问它如果你能给我这些字母的例子会很棒！

谢谢

Answer 1

首先需要获取变量的脚本组件，如果它们位于不同的游戏对象中，则需要将游戏对象作为参考传递给检查器。

例如，我scriptA.cs中的GameObject A和scriptB.cs中的GameObject B：

scriptA.cs

// make sure its type is public so you can access it later on
public bool X = false;

scriptB.cs

public GameObject a; // you will need this if scriptB is in another GameObject
                     // if not, you can omit this
                     // you'll realize in the inspector a field GameObject will appear
                     // assign it just by dragging the game object there
public scriptA script; // this will be the container of the script

void Start(){
    // first you need to get the script component from game object A
    // getComponent can get any components, rigidbody, collider, etc from a game object
    // giving it <scriptA> meaning you want to get a component with type scriptA
    // note that if your script is not from another game object, you don't need "a."
    // script = a.gameObject.getComponent<scriptA>(); <-- this is a bit wrong, thanks to user2320445 for spotting that
    // don't need .gameObject because a itself is already a gameObject
    script = a.getComponent<scriptA>();
}

void Update(){
    // and you can access the variable like this
    // even modifying it works
    script.X = true;
}

Answer 2

只是为了完成第一个答案

不需要

a.gameObject.getComponent<scriptA>();

a已经是GameObject所以这样做

a.getComponent<scriptA>();

如果您尝试访问的变量位于GameObject的子级中，则应使用

a.GetComponentInChildren<scriptA>();

如果您需要它的变量或方法，您可以像这样访问它

a.GetComponentInChildren<scriptA>().nameofyourvar;
a.GetComponentInChildren<scriptA>().nameofyourmethod(Methodparams);

Answer 3

你可以在这里使用静态。

这是一个例子：

<强> ScriptA.cs

Class ScriptA : MonoBehaviour{
 public static bool X = false;
}

<强> ScriptB.cs

Class ScriptB : MonoBehaviour{
 void Update() {
   bool AccesingX = ScriptA.X;
   // or you can do this also 
   ScriptA.X = true;
 }
}

OR

<强> ScriptA.cs

Class ScriptA : MonoBehaviour{

//you are actually creating instance of this class to access variable.
 public static ScriptA instance;

 void Awake(){

     // give reference to created object.
     instance = this;

 }

 // by this way you can access non-static members also.
 public bool X = false;


}

<强> ScriptB.cs

Class ScriptB : MonoBehaviour{
 void Update() {
   bool AccesingX = ScriptA.instance.X;
   // or you can do this also 
   ScriptA.instance.X = true;
 }
}

有关更多详细信息，您可以参考singleton类。

从另一个脚本C＃访问变量

3 个答案: