Creating GameObjects, parenting, and registering Undo actions

Whether from a menu item, or an Inspector view, there are times when we want to create a new GameObject in the scene from an Editor Extension. In this recipe, we'll create a new GameObject and set its position and color randomly:

 

 

How to do it...

To create an object and change its value follow these steps:

1. In the Project panel, create a new folder, Editor.
2. In your new Editor folder create a new C# script-class named ObjectManager.cs, containing the following:

using UnityEditor;
 using UnityEngine;

 public class ObjectManager : EditorWindow
 {
     [MenuItem("GameObject/MyObjectManager/Create New Empty Game Object")]
     static void CreateCustomEmptyGameObject(MenuCommand menuCommand)
     {
         GameObject go = new GameObject("GameObject - custom - Empty");
         go.transform.position = RandomPosition(5);

         // Ensure it gets reparented if this was a context click (otherwise does nothing)
         GameObjectUtility...