The Main Stage contains all the currently open regular Scenes and is always available.
The Main Stage also includes the DontDestroyOnLoad Scene, which the Hierarchy sometimes shows during Play Mode, as well as every GameObject marked with the HideFlags.HideAndAndDontSave HideFlags. It includes these GameObjects because, by default, these GameObjects do not belong to any particular Scene but Unity renders them together with the Main Stage objects in the SceneView.
Other Stage types exists for Editor tooling purposes. For example, you can use PreviewSceneStage as a base class for custom Stages.
| hideFlags | 该对象应该隐藏、随场景一起保存还是由用户修改？ |
| name | 对象的名称。 |
| assetPath | The path of the Asset file associated with the stage, relative to the project root folder. |
| stageHandle | The StageHandle struct for this stage. |
| GetInstanceID | 返回对象的实例 ID。 |
| ToString | 返回对象的名称。 |
| FindComponentOfType | 返回给定类型的第一个载入激活对象。 |
| FindComponentsOfType | 返回给定类型的所有载入激活对象的列表。 |
| GetCombinedSceneCullingMaskForCamera | Gets the Scene culling mask from this Stage. |
| CreateHeaderContent | Creates the header content for this Stage. Both the Hierarchy window header and Scene view breadcrumb bar use this content. |
| GetHashForStateStorage | Unity calls this method to get a hash code that is used to save the state of the Stage to disk. |
| OnCloseStage | Unity calls this method when the Stage is closed. Classes that inherit from Stage should implement cleanup logic in this method. |
| OnDisable | 请参阅 ScriptableObject.OnDisable。 |
| OnEnable | 请参阅 ScriptableObject.OnEnable。 |
| OnFirstTimeOpenStageInSceneView | Unity calls this method the first time a Stage is opened for a specific Asset, for a specific Scene view. |
| OnOpenStage | Unity calls this method when the Stage is opened. Classes that inherit from Stage should implement initialization logic in this method. |
| OnReturnToStage | Unity calls this method when you return to a Stage that is already open. |
| Destroy | 移除 GameObject、组件或资源。 |
| DestroyImmediate | 立即销毁对象 /obj/。强烈建议您改用 Destroy。 |
| DontDestroyOnLoad | 在加载新的 Scene 时，请勿销毁 Object。 |
| FindObjectOfType | 返回第一个类型为 type 的已加载的激活对象。 |
| FindObjectsOfType | Gets a list of all loaded objects of Type type. |
| Instantiate | 克隆 original 对象并返回克隆对象。 |
| CreateInstance | 创建脚本化对象的实例。 |
| bool | 该对象是否存在？ |
| operator != | 比较两个对象是否引用不同的对象。 |
| operator == | 比较两个对象引用，判断它们是否引用同一个对象。 |