4.13 has added support for Stationary actors which “can be changed in game, but enables cached lighting methods when not moving” and should be used for rarely moving actors. However moving that actor then using for example a blueprint timeline prints a warning and prevents it from moving.
Warning Mobility of BP_LevelRoot_C_1 : DefaultSceneRoot has to be 'Movable' if you'd like to move.
Seems like this check has not been updated yet as Stationary actors get moved fine if they are children of a Movable actor which moves.
Hi
Are you referring to the new Cached Shadowmaps system that is being implemented? If so, this is not how it is intended to be used. You can find more info on this in the Release Notes here, but it states:
“Cached shadowmaps for movable point and spot lights When a point or spot light is not moving, we can store off the shadowmap for that light and reuse it next frame.”
This comes with significant limitations, but I was unable to find any information on being able to move stationary or static actors, and the warning you are receiving is what I would expect to happen. If this is not the system you are referring to, can you show me where you saw the information about moving stationary actors?
Hey , yes I am referring to that. I assumed that stationary actors should be movable since they can be moved like mentioned using them as children of movable actors and based on how it is worded in the editor. Also I have been getting a 2fps boost out of that.
After playing around some more I found out that there were some small issues like having stuttering in character movement base movement. Seems like Stationary actors are indeed not intended to be used for moving objects. Maybe it would be a good idea to change the tooltip like this “…but enables cached lighting methods when the light is not moving” as this is what the commit message said as well (Change 3013736)
I was able to reproduce what you are seeing on my end and have entered a bug report, which can be tracked here. Unfortunately, I am not certain whether the tooltip itself is incorrect or if the movable setting has not be implemented in 4.13 yet.