用于指定编辑器播放模式状态更改的枚举。
另请参阅：PauseState、EditorApplication.playModeStateChanged、EditorApplication.isPlaying。
| EnteredEditMode | Occurs as soon as the Editor is in edit mode, after having been in play mode. |
| ExitingEditMode | 在编辑器进入播放模式之前以编辑模式退出时发生。 |
| EnteredPlayMode | Occurs as soon as the Editor is in play mode. |
| ExitingPlayMode | 在编辑器进入编辑模式之前以播放模式退出时发生。 |