Question

Namespace: UnityEngine

Description 描述

Makes a script execute in edit mode.

使一个脚本在编辑模式下运行。

By default, script components are only executed in play mode. By adding this attribute, each script component will also have its callback functions executed while the Editor is not in playmode.

默认，脚本组件仅在play模式下运行。但是添加这个属性之后，每个脚本组件在编辑器而不是在运行模式也将执行它的回调函数

The functions are not called constantly like they are in play mode.

这个功能不断调用，就像在运行模式。

- Update is only called when something in the scene changed.
- 当某些东西在场景被改变Update才被调用。
- OnGUI is called when the Game View recieves an Event.
- 当Game视图接收了事件OnGUI被调用。
- OnRenderObject and the other rendering callback functions are called on every repaint of the Scene View or Game View.
- OnRenderObject以及其他渲染回调函数在Scene视图或Game视图每当重绘时被调用。

JavaScript:

// Make the script also execute in edit mode.
@script ExecuteInEditMode()// Just a simple script that looks at the target transform.
var target : Transform;
function Update () {
	if (target)
		transform.LookAt(target);
}

C#:

using UnityEngine;
using System.Collections;
 
[ExecuteInEditMode]
public class ExampleClass : MonoBehaviour {
    public Transform target;
    void Update() {
        if (target)
            transform.LookAt(target);
 
    }
}