UE4創建一個單例


UCLASS()
class MYNULL_1_API UManagerObj : public UObject
{
	GENERATED_BODY()
public:
	UManagerObj();
	UFUNCTION(BlueprintCallable, Category = "UManagerObj")
	static UManagerObj* GetInstancePtr()
	{
		if (Instance == nullptr)
		{
			Instance = NewObject<UManagerObj>();
			Instance->AddToRoot();
		}
		return Instance;
	}
	static UManagerObj& GetInstanceRef() 
	{
		return *GetInstancePtr();
	}
private:
	static UManagerObj* Instance;
};

  

UManagerObj::UManagerObj()
{

}
UManagerObj* UManagerObj::Instance = nullptr;

  


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