Unreal Engine: Is Spatially Loaded
If your Unreal Engine level has a World Partition, you shoud know about “Is Spatially Loaded”.
Is Spatially Loaded determine if this actor is spatially loaded when placed in a partitioned world.
- If true, this actor will be loaded when in the range of any streaming sources and if (1) in no data layers, or (2) one or more of its data layers are enabled.
- If false, this actor will be loaded if (1) in no data layers, or (2) one or more of its data layers are enabled.
This means that If it’s unchecked, the actor will always be visible even if the World Partition cells are unloaded.
When making a big map in Unreal Engine with World Partition enabled, the grid cells are not loaded from the start. When you open the Level, the Editor will only load Actors that have their “Is Spatially Loaded” setting marked as False.
A ‘spatially loaded actor‘ means that if the actor is inside a cell that is unloaded, it will also be unloaded. However, if another actor, such as the Level Blueprint, references the unloaded actor, it can cause a crash.
This is useful for creating really big worlds because the Editor doesn’t need to load everything all at once.
Hope This Helps!