static PrefabOverrides GetPrefabOverrides(GameObject prefabInstance, bool includeDefaultOverrides = false)
{
if (!PrefabUtility.IsPartOfNonAssetPrefabInstance(prefabInstance))
{
Debug.LogError("GeneratePrefabOverrides should only be called with GameObjects that are part of a prefab");
return(new PrefabOverrides());
}
var mods = new PrefabOverrides();
mods.objectOverrides = PrefabOverridesUtility.GetObjectOverrides(prefabInstance, includeDefaultOverrides);
mods.addedComponents = PrefabOverridesUtility.GetAddedComponents(prefabInstance);
mods.removedComponents = PrefabOverridesUtility.GetRemovedComponents(prefabInstance);
mods.addedGameObjects = PrefabOverridesUtility.GetAddedGameObjects(prefabInstance);
return(mods);
}
static GameObject[] GetOutermostPrefabInstancesFromSelection()
{
var gos = new List <GameObject>();
var gameObjects = Selection.gameObjects;
for (int i = 0; i < gameObjects.Length; i++)
{
var go = gameObjects[i];
if (go != null && PrefabUtility.IsPartOfNonAssetPrefabInstance(go) && PrefabUtility.IsOutermostPrefabInstanceRoot(go))
{
gos.Add(go);
}
}
return(gos.ToArray());
}
internal static UInt64 GetOrGenerateFileIDHint(UnityEngine.Object obj)
{
UInt64 fileID = Unsupported.GetFileIDHint(obj);
if (fileID == 0)
{
// GenerateFileIDHint only work on saved nested prefabs instances.
var instanceHandle = PrefabUtility.GetPrefabInstanceHandle(obj);
if (instanceHandle != null)
{
bool isPrefabInstanceSaved = Unsupported.GetFileIDHint(instanceHandle) != 0;
if (isPrefabInstanceSaved && PrefabUtility.IsPartOfNonAssetPrefabInstance(obj) && PrefabUtility.GetPrefabAssetType(obj) != PrefabAssetType.MissingAsset)
{
fileID = Unsupported.GenerateFileIDHint(obj);
}
}
}
return(fileID);
}
internal static GameObject FindSelectionBase(GameObject go)
{
if (go == null)
{
return(null);
}
// Find prefab based base
Transform prefabBase = null;
if (PrefabUtility.IsPartOfNonAssetPrefabInstance(go))
{
prefabBase = PrefabUtility.GetOutermostPrefabInstanceRoot(go).transform;
}
// Find attribute based base
Transform tr = go.transform;
while (tr != null)
{
// If we come across the prefab base, no need to search further down.
if (tr == prefabBase)
{
return(tr.gameObject);
}
// If this one has the attribute, return this one.
if (AttributeHelper.GameObjectContainsAttribute <SelectionBaseAttribute>(tr.gameObject))
{
return(tr.gameObject);
}
tr = tr.parent;
}
// There is neither a prefab or attribute based selection root, so return null
return(null);
}
internal static void AddGameObjectsToPrefabAndConnect(GameObject[] gameObjects, Object targetPrefab)
{
if (gameObjects == null)
{
throw new ArgumentNullException("gameObjects");
}
if (gameObjects.Length == 0)
{
throw new ArgumentException("gameObjects array is empty");
}
if (targetPrefab == null)
{
throw new ArgumentNullException("targetPrefab");
}
if (!PrefabUtility.IsPartOfPrefabAsset(targetPrefab))
{
throw new ArgumentException("Target Prefab has to be a Prefab Asset");
}
Object targetPrefabInstance = null;
var targetPrefabObject = PrefabUtility.GetPrefabAssetHandle(targetPrefab);
foreach (GameObject go in gameObjects)
{
if (go == null)
{
throw new ArgumentException("GameObject in input 'gameObjects' array is null");
}
if (EditorUtility.IsPersistent(go)) // Prefab asset
{
throw new ArgumentException("Game object is part of a prefab");
}
var parentPrefabInstance = GetParentPrefabInstance(go);
if (parentPrefabInstance == null)
{
throw new ArgumentException("GameObject is not (directly) parented under a target Prefab instance.");
}
if (targetPrefabInstance == null)
{
targetPrefabInstance = parentPrefabInstance;
if (!IsPrefabInstanceObjectOf(go.transform.parent, targetPrefabObject))
{
throw new ArgumentException("GameObject is not parented under a target Prefab instance.");
}
}
else
{
if (parentPrefabInstance != targetPrefabInstance)
{
throw new ArgumentException("GameObjects must be parented under the same Prefab instance.");
}
}
if (PrefabUtility.IsPartOfNonAssetPrefabInstance(go))
{
var correspondingGO = PrefabUtility.GetCorrespondingObjectFromSource(go);
var correspondingGOPrefabObject = PrefabUtility.GetPrefabAssetHandle(correspondingGO);
if (targetPrefabObject == correspondingGOPrefabObject)
{
throw new ArgumentException("GameObject is already part of target prefab");
}
}
}
string prefabGUID = AssetDatabase.AssetPathToGUID(AssetDatabase.GetAssetPath(targetPrefab));
if (!VerifyNestingFromScript(gameObjects, prefabGUID, null))
{
throw new ArgumentException("Cyclic nesting detected");
}
AddGameObjectsToPrefabAndConnect_Internal(gameObjects, targetPrefab);
}
