vault backup: 2024-10-12 17:19:45
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# Deprecated
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- **功能描述:** 标识该FRigUnit为弃用状态,不在蓝图右键菜单中显示。
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- **使用位置:** USTRUCT
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- **引擎模块:** RigVMStruct
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- **元数据类型:** bool
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- **限制类型:** FRigUnit类型上
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- **常用程度:** ★★
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标识该FRigUnit为弃用状态,不在蓝图右键菜单中显示。
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但如果之前已经在蓝图中使用了,则还是可以继续使用。
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注意这个时候要相应的实现GetUpgradeInfo(),否则会报错。
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## 测试代码:
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```cpp
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USTRUCT(meta = (DisplayName = "MyRigDeprecated",Deprecated))
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struct INSIDER_API FRigUnit_MyRigDeprecated : public FRigUnit
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{
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GENERATED_BODY()
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RIGVM_METHOD()
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virtual void Execute() override;
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RIGVM_METHOD()
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virtual FRigVMStructUpgradeInfo GetUpgradeInfo() const override;
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public:
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UPROPERTY(meta = (Input))
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float MyFloat_Input = 123.f;
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UPROPERTY(meta = (Output))
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float MyFloat_Output = 123.f;
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};
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```
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## 测试效果:
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## 原理:
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在构建菜单项的时候略过Deprecated的节点。
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```cpp
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void FRigVMEditorModule::GetTypeActions(URigVMBlueprint* RigVMBlueprint, FBlueprintActionDatabaseRegistrar& ActionRegistrar)
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{
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// Add all rig units
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for(const FRigVMFunction& Function : Registry.GetFunctions())
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{
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// skip deprecated units
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if(Function.Struct->HasMetaData(FRigVMStruct::DeprecatedMetaName))
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{
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continue;
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}
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}
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}
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```
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