枚举

• UENUM宏搭配BlueprintType可以将枚举暴露给蓝图，不使用的话，仅能在C++使用

  //定义一个原生enum class
  enum class EMyType
  {
  Type1,
  Type2,
  Type3,
  };

  UENUM(BlueprintType)
  enum class ECurrentState : uint8
  {
  Idle UMETA(DisplayName="空闲"),
  Attack UMETA(DisplayName="攻击"),
  Roll UMETA(DisplayName="翻滚"),
  Dead UMETA(DisplayName="死亡"),
  };

  UPROPERTY(EditAnywhere,BlueprintReadWrite)
  ECurrentState MyCurrentState UMETA(DisplayName = "当前状态");

结构体

• BlueprintType可以将枚举暴露给蓝图

  //结构体
  USTRUCT(BlueprintType)
  struct FMyStruct
  {
  GENERATED_BODY()

  // 暴露给蓝图
  UPROPERTY(EditAnywhere, BlueprintReadWrite, Category="Test Variables")
  int32 MyIntegerMemberVariable;
  
  // 不暴露给蓝图
  int32 NativeOnlyMemberVariable;
  
  // 蓝图图表无法访问此UObject指针，但是指针对UE4的反射、智能指针和垃圾回收系统可见。
  UPROPERTY()
  UObject* SafeObjectPointer;

  };

  UPROPERTY(EditAnywhere,BlueprintReadWrite)
  FMyStruct MyStruct;

• 继承FTableRowBase之后可以用于DataTable

  struct FInventoryItemInfo : public FTableRowBase
  {
  GENERATED_BODY()

  UPROPERTY(EditAnywhere, BlueprintReadWrite)
      FString ItemName UMETA(DisplayName="名称");
  
  UPROPERTY(EditAnywhere, BlueprintReadWrite)
      int32 index UMETA(DisplayName="编号");
  
  UPROPERTY(EditAnywhere, BlueprintReadWrite)
      bool bCanStaking UMETA(DisplayName="可否叠加");
  
  UPROPERTY(EditAnywhere, BlueprintReadWrite)
      int32 Count UMETA(DisplayName="数量");
  
  UPROPERTY(EditAnywhere, BlueprintReadWrite)
      UTexture2D* Icon UMETA(DisplayName="图标");
  
  UPROPERTY(EditAnywhere, BlueprintReadWrite)
      TSubclassOf<AActor> ItemClass;
  
  UPROPERTY(EditAnywhere, BlueprintReadWrite)
      USkeletalMesh* SkeletalMesh;

  };

  UPROPERTY(EditAnywhere,BlueprintReadWrite)
  FInventoryItemInfo EmptyItem;

参考

结构体