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Unreal Engine C++ API Reference > Runtime > MovieScene > EntitySystem > FEntityAllocation
References
| Module | MovieScene |
| Header | /Engine/Source/Runtime/MovieScene/Public/EntitySystem/MovieSceneEntitySystemTypes.h |
| Include | #include "EntitySystem/MovieSceneEntitySystemTypes.h" |
bool HasStructureChangedSince
&40;
uint64 InSystemVersion
&41; const
Remarks
Retrieve this allocation's serial number. The serial number is incremented whenever a component is modified on this allocation, or when an entity is added or removed. Typically used for caching component data on a per-allocation basis