UCLASS(Blueprintable, BlueprintType)class USolusDataSingleton : public UObject{	GENERATED_BODY()public:        USolusDataSingleton(const FObjectInitializer& ObjectInitializer); 	UPROPERTY(EditAnywhere, BlueprintReadWrite, Category="Solus Data Singleton")	TArray
    
      SolusTreeBlueprints; 	UPROPERTY(EditAnywhere, BlueprintReadWrite, Category="Solus Data Singleton")	UTexture2D* SolusT2D; 	UPROPERTY(EditAnywhere, BlueprintReadWrite, Category="Solus Data Singleton")	FVector SolusEssentialVector; 	UPROPERTY(EditAnywhere, BlueprintReadWrite, Category="Solus Data Singleton")	FString SolusCoreFilePath;};
    

SolusDataSingleton.cpp

#include "Solus.h"#include "SolusDataSingleton.h"USolusDataSingleton::USolusDataSingleton(const FObjectInitializer& ObjectInitializer)	: Super(ObjectInitializer){ 	SolusCoreFilePath = "E:/Solus"; 	SolusEssentialVector = FVector(9000,0,0);}

Create The BP_ClassXXX of the CPP Class

Project Settings->Engine->General, 将Game Singleton Class设置为BP_ClassXXX

Easily Set Default Values Any Time!

Function Library To Access Anywhere in BP

SolusDataSingletonLibrary.h

#pragma once //Data Singleton Class#include "SolusDataSingleton.h" #include "SolusDataSingletonLibrary.generated.h" //note about UBlueprintFunctionLibrary// This class is a base class for any function libraries exposed to blueprints.// Methods in subclasses are expected to be static, and no methods should be added to the base class. UCLASS()class SOLUS_API USolusDataSingletonLibrary : public UBlueprintFunctionLibrary{	GENERATED_BODY()public:	USolusDataSingletonLibrary(const FObjectInitializer& ObjectInitializer); 	UFUNCTION(BlueprintPure,   Category="Solus Data Singleton")	static USolusDataSingleton* GetSolusData(bool& IsValid); };

SolusDataSingletonLibrary.cpp

#include "Solus.h"#include "SolusDataSingletonLibrary.h"//// USolusDataSingletonLibrary USolusDataSingletonLibrary::USolusDataSingletonLibrary(const FObjectInitializer& ObjectInitializer)	: Super(ObjectInitializer){  } USolusDataSingleton* USolusDataSingletonLibrary::GetSolusData(bool& IsValid){	IsValid = false;	USolusDataSingleton* DataInstance = Cast
    
     (GEngine->GameSingleton); 	if(!DataInstance) return NULL;	if(!DataInstance->IsValidLowLevel()) return NULL; 	IsValid = true;	return DataInstance;}