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API > API/Runtime > API/Runtime/MovieScene > API/Runtime/MovieScene/FMovieSceneEntitySystemRunner
Description
Set up initial state before any evaluation runs. Only called once regardless of the number of pending updates we have to process Primarily used for setting up external 'is evaluating' flags for re-entrancy and async checks.
| Name | StartEvaluation |
| Type | function |
| Header File | /Engine/Source/Runtime/MovieScene/Public/EntitySystem/MovieSceneEntitySystemRunner.h |
| Include Path | #include "EntitySystem/MovieSceneEntitySystemRunner.h" |
| Source | /Engine/Source/Runtime/MovieScene/Private/EntitySystem/MovieSceneEntitySystemRunner.cpp |
UE::MovieScene::ERunnerFlushResult StartEvaluation
(
UMovieSceneEntitySystemLinker * Linker
)