ScriptableWizard.OnWizardUpdate 当向导更新

// C#
// Simple Wizard that clones an object several times.
//创建向导，多次克隆物体
using UnityEngine;
using UnityEditor;
using System.Collections;

public class CloneObjects : ScriptableWizard {

	public GameObject ObjectToCopy = null;
	public int numberOfCopies = 2;
	[MenuItem ("Example/Clone objects")]
	static void CreateWindow() {
		// Creates the wizard for display
		//创建向导显示
		ScriptableWizard.DisplayWizard("Clone an object.", typeof(CloneObjects), "Clone!");
	}
	void OnWizardUpdate() {
		helpString =
			"Clones an object a number of times and move the cloned objects to the origin";
		if(!ObjectToCopy) {
			errorString = "Please assign an object";
			isValid = false;
		} else {
			errorString = "";
			isValid = true;
		}
	}
	void OnWizardCreate () {
		for(int i = 0; i < numberOfCopies; i++)
		Instantiate(ObjectToCopy, Vector3.zero, Quaternion.identity);
	}
}