89 lines
2.4 KiB
Markdown
89 lines
2.4 KiB
Markdown
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# NotInputConfigurable
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- **功能描述：** 让一些UInputModifier和UInputTrigger不能在ProjectSettings里配置。
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- **使用位置：** UCLASS
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- **引擎模块：** Blueprint
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- **元数据类型：** bool
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- **限制类型：** UInputModifier和UInputTrigger的子类
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- **常用程度：** ★
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让一些UInputModifier和UInputTrigger不能在ProjectSettings里配置。
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## 源码例子：
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```cpp
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UCLASS(NotBlueprintable, meta = (DisplayName = "Chorded Action", NotInputConfigurable = "true"))
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class ENHANCEDINPUT_API UInputTriggerChordAction : public UInputTrigger
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{}
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UCLASS(NotBlueprintable, meta = (DisplayName = "Combo (Beta)", NotInputConfigurable = "true"))
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class ENHANCEDINPUT_API UInputTriggerCombo : public UInputTrigger
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{}
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```
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## 测试代码：
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```cpp
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UCLASS( meta = (NotInputConfigurable = "true"))
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class INSIDER_API UMyInputTrigger_NotInputConfigurable :public UInputTrigger
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{
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GENERATED_BODY()
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public:
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UPROPERTY(EditAnywhere)
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float MyFloat = 123;
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};
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UCLASS( meta = ())
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class INSIDER_API UMyInputTrigger_Configurable :public UInputTrigger
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{
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GENERATED_BODY()
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public:
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UPROPERTY(EditAnywhere)
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float MyFloatConfigurable = 123;
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};
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```
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## 测试效果：
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可见只有UMyInputTrigger_Configurable 可以编辑默认值。
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## 原理：
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UEnhancedInputDeveloperSettings的UI定制化会收集UInputModifier和UInputTrigger的CDO对象，然后根据NotInputConfigurable过滤掉一些不能配置的。
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```cpp
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GatherNativeClassDetailsCDOs(UInputModifier::StaticClass(), ModifierCDOs);
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GatherNativeClassDetailsCDOs(UInputTrigger::StaticClass(), TriggerCDOs);
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void FEnhancedInputDeveloperSettingsCustomization::GatherNativeClassDetailsCDOs(UClass* Class, TArray<UObject*>& CDOs)
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{
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// Strip objects with no config stored properties
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CDOs.RemoveAll([Class](UObject* Object) {
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UClass* ObjectClass = Object->GetClass();
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if (ObjectClass->GetMetaData(TEXT("NotInputConfigurable")).ToBool())
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{
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return true;
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}
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while (ObjectClass)
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{
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for (FProperty* Property : TFieldRange<FProperty>(ObjectClass, EFieldIteratorFlags::ExcludeSuper, EFieldIteratorFlags::ExcludeDeprecated))
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{
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if (Property->HasAnyPropertyFlags(CPF_Config))
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{
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return false;
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}
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}
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// Stop searching at the base type. We don't care about configurable properties lower than that.
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ObjectClass = ObjectClass != Class ? ObjectClass->GetSuperClass() : nullptr;
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}
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return true;
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});
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}
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```
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