Asynchronous operation coroutine.
You can yield until asynchronous operation continues, or manually check whether it's done (isDone) or progress (progress).
See Also: Application.LoadLevelAsync, Application.LoadLevelAdditiveAsync, AssetBundle.LoadAsync.| allowSceneActivation | Allow scenes to be activated as soon as it is ready. |
| isDone | Has the operation finished? (Read Only) |
| priority | Priority lets you tweak in which order async operation calls will be performed. |
| progress | What's the operation's progress. (Read Only) |