[UFUNCTION](Programming/UnrealArchitecture/Reference/Functions)(BlueprintCallable, Category="WFCFunctions") bool ObservationPropagation ( [TArray](API\Runtime\Core\Containers\TArray)< [FWaveFunctionCollapseTile](API\Plugins\WaveFunctionCollapse\FWaveFunctionCollapseTile) > & Tiles, [TArray](API\Runtime\Core\Containers\TArray)< int32 > & RemainingTiles, [TMap](API\Runtime\Core\Containers\TMap)< int32, [FWaveFunctionCollapseQueueElement](API\Plugins\WaveFunctionCollapse\FWaveFunctionCollapseQueueElemen-) > & ObservationQueue, int32 RandomSeed )