This enumeration describes the different kind of changes that can be tracked in an ObjectChangeEventStream. Each event has a corresponding type in ObjectChangeEvents.
| None | Indicates an uninitialized value. |
| ChangeScene | A change of this type indicates that an open scene has been changed ("dirtied") without any more specific information available. This happens for example when EditorSceneManager.MarkSceneDirty is used. |
| CreateGameObjectHierarchy | A change of this type indicates that a GameObject has been created, possibly with additional objects below it in the hierarchy. This happens for example when Undo.RegisterCreatedObjectUndo is used with a GameObject. |
| ChangeGameObjectStructureHierarchy | A change of this type indicates that the structure of a GameObject has changed and any GameObject in the hierarchy below it might have changed. This happens for example when Undo.RegisterFullObjectHierarchyUndo is used. |
| ChangeGameObjectStructure | A change of this type indicates that the structure of a GameObject has changed. This happens when a component is added to or removed from the GameObject using Undo.AddComponent or Undo.DestroyObjectImmediate. |
| ChangeGameObjectParent | A change of this type indicates that the parent of a GameObject has changed. This happens when Undo.SetTransformParent or SceneManager.MoveGameObjectToScene is used. |
| ChangeGameObjectOrComponentProperties | A change of this type indicates that a property of a GameObject or Component has changed. This happens for example when Undo.RecordObject is used with an instance of a Component. |
| DestroyGameObjectHierarchy | A change of this type indicates that a GameObject and the entire hierarchy below it has been destroyed. This happens for example when Undo.DestroyObjectImmediate is used with an GameObject. |
| CreateAssetObject | A change of this type indicates that an asset object has been created. This happens for example when Undo.RegisterCreatedObjectUndo is used with an instance of an asset (e.g. Texture). |
| DestroyAssetObject | A change of this type indicates that an asset object has been destroyed. This happens for example when Undo.DestroyObjectImmediate is used with an instance of an asset (e.g. Texture). |
| ChangeAssetObjectProperties | A change of this type indicates that a property of an asset object in memory has changed. This happens for example when Undo.RecordObject is used with an instance of an asset (e.g. Texture). |
| UpdatePrefabInstances | A change of this type indicates that prefab instances in an open scene have been updated due to a change to the source prefab. |