59 lines
1.2 KiB
Markdown
59 lines
1.2 KiB
Markdown
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# Bitmask
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- **功能描述：** 设定一个属性采用Bitmask赋值
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- **使用位置：** UPROPERTY
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- **引擎模块：** Enum Property
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- **元数据类型：** bool
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- **限制类型：** 用来表示枚举值的int32
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- **关联项：** [BitmaskEnum](../BitmaskEnum/BitmaskEnum.md)
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- **常用程度：** ★★★★★
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这个标记和enum身上的定义并没有一定的关系，因此可以单独定义。
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```cpp
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UENUM(BlueprintType)
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enum class EMyEnum_Normal:uint8
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{
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First,
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Second,
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Third,
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};
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UENUM(BlueprintType,Flags)
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enum class EMyEnum_Flags:uint8
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{
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First,
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Second,
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Third,
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};
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UENUM(BlueprintType,Meta = (Bitflags))
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enum class EMyEnum_BitFlags:uint8
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{
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First,
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Second,
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Third,
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};
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UCLASS(Blueprintable, BlueprintType)
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class INSIDER_API AMyActor_EnumBitFlags_Test:public AActor
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{
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GENERATED_BODY()
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public:
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UPROPERTY(EditAnywhere, Meta = (Bitmask, BitmaskEnum = "EMyEnum_Normal"))
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int32 MyNormal;
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UPROPERTY(EditAnywhere, Meta = (Bitmask, BitmaskEnum = "EMyEnum_Flags"))
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int32 MyFlags;
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UPROPERTY(EditAnywhere, Meta = (Bitmask, BitmaskEnum = "EMyEnum_BitFlags"))
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int32 MyBitFlags;
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};
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```
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都是可以在蓝图中用标记来定义
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可以用BitmaskEnum进一步提供枚举值
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