RoamingActorSubsystem

[Ingarnm]

I spent some time working on actors that move between WorldPartition cells. The idea is that roaming actors "live" in the PersistentLevel, but are saved and loaded per WorldPartition cell. If a roaming actor crosses into the bounds of an inactive cell, it will save itself into that cell.

For a roaming actor to function correctly, it must implement the ISpudRoamingActor interface and register itself with SpudRoamingActorSubsystem. From that point, its save and destroy lifecycle is fully managed by the subsystem. Upon restoration, the actor will always belong to the PersistentLevel rather than the cell it was restored from.

USpudRuntimeStoredActorComponent is kept as-is for now, it only subscribes and unsubscribes its owner from subsystem tracking.

Currently, a separate interface is used to distinguish roaming actors during the SPUD save and restore process, there might be a better way to handle this.

[sinbad]

Thanks! Can anyone who uses WP put this through their paces? I'll ping the Discord to see.

[Ingarnm]

For those who want to test it, it's better to use console command: RoamingActorSubsystem.DebugDrawCells 1 , WP creates cells automatically, and they may be generated based on actors that don't need WP cells, like a SkySphere or some utility volumes, so this will make them easier to track.