42 lines
1.7 KiB
Markdown
42 lines
1.7 KiB
Markdown
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# HideSpawnParms
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- **功能描述：** 在UGamelayTask子类生成的蓝图异步节点上隐藏UGamelayTask子类继承链中某些属性。
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- **使用位置：** UFUNCTION
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- **元数据类型：** strings="a，b，c"
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- **关联项：** [ExposedAsyncProxy](../../ExposedAsyncProxy/ExposedAsyncProxy.md)
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在UGamelayTask子类生成的蓝图异步节点上隐藏UGamelayTask子类继承链中某些属性。
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HideSpawnParms 只在UK2Node_LatentGameplayTaskCall中判断，因此只作用于UGameplayTask的子类。在源码中找到的唯一用法是 HideSpawnParms = "Instigator”，但是其UGamelayTask子类继承链中并无该属性，因此其实是不发挥作用的。
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```cpp
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UFUNCTION(BlueprintCallable, Meta = (HidePin = "OwningAbility", DefaultToSelf = "OwningAbility", BlueprintInternalUseOnly = "true", HideSpawnParms = "Instigator"), Category = "Ability|Tasks")
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static UAbilityTask_StartAbilityState* StartAbilityState(UGameplayAbility* OwningAbility, FName StateName, bool bEndCurrentState = true);
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```
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保留和去掉HideSpawnParms 的蓝图的节点都为：
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## 源码里发生的位置：
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```cpp
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void UK2Node_LatentGameplayTaskCall::CreatePinsForClass(UClass* InClass)
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{
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// Tasks can hide spawn parameters by doing meta = (HideSpawnParms="PropertyA,PropertyB")
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// (For example, hide Instigator in situations where instigator is not relevant to your task)
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TArray<FString> IgnorePropertyList;
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{
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UFunction* ProxyFunction = ProxyFactoryClass->FindFunctionByName(ProxyFactoryFunctionName);
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const FString& IgnorePropertyListStr = ProxyFunction->GetMetaData(FName(TEXT("HideSpawnParms")));
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if (!IgnorePropertyListStr.IsEmpty())
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{
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IgnorePropertyListStr.ParseIntoArray(IgnorePropertyList, TEXT(","), true);
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}
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}
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}
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```
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