PrefabUtility.CreateEmptyPrefab

Description

Creates an empty prefab at given path.

If a prefab at the path already exists it will be deleted and replaced with an empty prefab. Returns a reference to the prefab.

#pragma strict

// Creates a prefab at the given path.
// If a prefab already exists it asks if you want to replace it

@MenuItem("Examples/Create Empty Prefab")
static function CreatePrefab() {

    var objs = Selection.gameObjects;

    for (var go : GameObject in objs) {
        var localPath : String = "Assets/" + go.name + ".prefab";
        if (AssetDatabase.LoadAssetAtPath(localPath, GameObject)) {
            if (EditorUtility.DisplayDialog("Are you sure?",
                "The prefab already exists. Do you want to overwrite it?",
                "Yes",
                "No"))
                    CreateNew(go, localPath);
        }
        else
            CreateNew(go, localPath);
    }
}

@MenuItem("Examples/Create Empty Prefab", true)
static function ValidateCreatePrefab() {
    return Selection.activeGameObject != null;
}

static function CreateNew(obj : GameObject, localPath : String) {
    var prefab : UnityEngine.Object = PrefabUtility.CreateEmptyPrefab(localPath);
    PrefabUtility.ReplacePrefab(obj, prefab, ReplacePrefabOptions.ConnectToPrefab);
}

// Creates a prefab at the given path.
// If a prefab already exists it asks if you want to replace it

using UnityEngine;
using UnityEditor;

public class CreateEmptyExample : EditorWindow
{
    [MenuItem("Examples/Create Empty Prefab")]
    static void CreatePrefab()
    {
        GameObject[] objs = Selection.gameObjects;

        foreach (GameObject go in objs)
        {
            string localPath = "Assets/" + go.name + ".prefab";
            if (AssetDatabase.LoadAssetAtPath(localPath, typeof(GameObject)))
            {
                if (EditorUtility.DisplayDialog("Are you sure?",
                        "The prefab already exists. Do you want to overwrite it?",
                        "Yes",
                        "No"))
                {
                    CreateNew(go, localPath);
                }
            }
            else
            {
                Debug.Log(go.name + " is not a prefab, will convert");
                CreateNew(go, localPath);
            }
        }
    }

    // Disable the menu item if no selection is in place
    [MenuItem("Examples/Create Empty Prefab", true)]
    static bool ValidateCreatePrefab()
    {
        return Selection.activeGameObject != null;
    }

    static void CreateNew(GameObject obj, string localPath)
    {
        Object prefab = PrefabUtility.CreateEmptyPrefab(localPath);
        PrefabUtility.ReplacePrefab(obj, prefab, ReplacePrefabOptions.ConnectToPrefab);
    }
}