Wrote a fix that works Unity 2020.1
NOTE : Works for Prefabs found at a given Path, but can be easily adapted for gameobjects in a scene.
Heavilly inspired from Clean up all missing scripts in the prefab under the project directory - Programmer Sought (thanks!)
using UnityEngine;
#if UNITY_EDITOR
using UnityEditor;
public static class Tool_RemoveMissingComponent
{
/// <summary>
/// DOES :
/// Remove missing scripts in prefabs found at PATH, then save prefab.
/// Saved prefab will have no missing scripts left.
/// Will not mod prefabs that dont have missing scripts.
///
/// NOTE :
/// If prefab has another prefab#2 that is not in PATH, that prefab#2 will still have missing scripts.
/// The instance of the prefab#2 in prefab will not have missing scripts (thus counted has override of prefab#2)
///
/// HOW TO USE :
/// Copy code in script anywhere in project.
/// Set the PATH var in method <see cref="RemoveMissingScripstsInPrefabsAtPath"/>.
/// Clik the button.
/// </summary>
[MenuItem("Tools/FixingStuff/Remove MissingComponents in Prefabs at Path")]
public static void RemoveMissingScripstsInPrefabsAtPath()
{
string PATH = "Assets/Prefabs";
EditorUtility.DisplayProgressBar("Modify Prefab", "Please wait...", 0);
string[] ids = AssetDatabase.FindAssets("t:Prefab", new string[] { PATH});
for (int i = 0; i < ids.Length; i++)
{
string path = AssetDatabase.GUIDToAssetPath(ids*);*
GameObject prefab = AssetDatabase.LoadAssetAtPath(path, typeof(GameObject)) as GameObject;
GameObject instance = PrefabUtility.InstantiatePrefab(prefab) as GameObject;
int delCount = 0;
RecursivelyModifyPrefabChilds(instance, ref delCount);
if (delCount > 0)
{
Debug.Log($“Removed({delCount}) on {path}”, prefab);
PrefabUtility.SaveAsPrefabAssetAndConnect(instance, path, InteractionMode.AutomatedAction);
}
UnityEngine.Object.DestroyImmediate(instance);
EditorUtility.DisplayProgressBar(“Modify Prefab”, “Please wait…”, i / (float)ids.Length);
}
AssetDatabase.SaveAssets();
EditorUtility.ClearProgressBar();
}
private static void RecursivelyModifyPrefabChilds(GameObject obj, ref int delCount)
{
if (obj.transform.childCount > 0)
{
for (int i = 0; i < obj.transform.childCount; i++)
{
var _childObj = obj.transform.GetChild(i).gameObject;
RecursivelyModifyPrefabChilds(_childObj, ref delCount);
}
}
int innerDelCount = GameObjectUtility.RemoveMonoBehavioursWithMissingScript(obj);
delCount += innerDelCount;
}
}
#endif
,Wrote a fix that works Unity 2020.1
NOTE : Works for Prefabs found at a given Path, but can be easily adapted for gameobjects in a scene.
Heavilly inspired from Clean up all missing scripts in the prefab under the project directory - Programmer Sought (thanks!)
using UnityEngine;
#if UNITY_EDITOR
using UnityEditor;
public static class Tool_RemoveMissingComponent
{
///
/// DOES :
/// Remove missing scripts in prefabs found at PATH, then save prefab.
/// Saved prefab will have no missing scripts left.
/// Will not mod prefabs that dont have missing scripts.
///
/// NOTE :
/// If prefab has another prefab#2 that is not in PATH, that prefab#2 will still have missing scripts.
/// The instance of the prefab#2 in prefab will not have missing scripts (thus counted has override of prefab#2)
///
/// HOW TO USE :
/// Copy code in script anywhere in project.
/// Set the PATH var in method .
/// Clik the button.
///
[MenuItem(“Tools/FixingStuff/Remove MissingComponents in Prefabs at Path”)]
public static void RemoveMissingScripstsInPrefabsAtPath()
{
string PATH = “Assets/Prefabs”;
EditorUtility.DisplayProgressBar(“Modify Prefab”, “Please wait…”, 0);
string[] ids = AssetDatabase.FindAssets(“t:Prefab”, new string[] { PATH});
for (int i = 0; i < ids.Length; i++)
{
string path = AssetDatabase.GUIDToAssetPath(ids*);*
GameObject prefab = AssetDatabase.LoadAssetAtPath(path, typeof(GameObject)) as GameObject;
GameObject instance = PrefabUtility.InstantiatePrefab(prefab) as GameObject;
int delCount = 0;
RecursivelyModifyPrefabChilds(instance, ref delCount);
if (delCount > 0)
{
Debug.Log($“Removed({delCount}) on {path}”, prefab);
PrefabUtility.SaveAsPrefabAssetAndConnect(instance, path, InteractionMode.AutomatedAction);
}
UnityEngine.Object.DestroyImmediate(instance);
EditorUtility.DisplayProgressBar(“Modify Prefab”, “Please wait…”, i / (float)ids.Length);
}
AssetDatabase.SaveAssets();
EditorUtility.ClearProgressBar();
}
private static void RecursivelyModifyPrefabChilds(GameObject obj, ref int delCount)
{
if (obj.transform.childCount > 0)
{
for (int i = 0; i < obj.transform.childCount; i++)
{
var _childObj = obj.transform.GetChild(i).gameObject;
RecursivelyModifyPrefabChilds(_childObj, ref delCount);
}
}
int innerDelCount = GameObjectUtility.RemoveMonoBehavioursWithMissingScript(obj);
delCount += innerDelCount;
}
}
#endif
