获取蓝图结构体的最有效方法

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1. float GetSetVectorX(UObject* ObjectWithVector,FName structname,FName prosFullName  )
   
2. {
   
3.     FName PropName = structname;//FName("myyy");
   
4.     FName VectorMemberName = prosFullName;//FName("aa_4_0592FEC04A8D2B9F467AD3B98BECBF83");
   
5. //   float NewValue = 42.0;
   
6. 
   
7.     // Get property representing struct
   
8.     UProperty* Prop = ObjectWithVector->GetClass()->FindPropertyByName(PropName);
   
9. 
   
10.     // Ensure ObjectWithVector actually has a myVector member
    
11.     if (Prop)
    
12.     {
    
13. 
    
14.         // Get struct address
    
15.         void* StructAddress = Prop->ContainerPtrToValuePtr<void>(ObjectWithVector);
    
16.      
    
17.         // Ensure MyVector really is a vector
    
18.         if (UStructProperty* StructProp = Cast<UStructProperty>(Prop))
    
19.         {
    
20.             UE_LOG(LogTemp, Warning, TEXT("struct is %s"), *StructProp->GetName());
    
21.             // We'll get struct properties through a UScriptStruct, not a UObject
    
22.             // ScriptStructs are just templates and don't hold any of your data
    
23.             UScriptStruct* ScriptStruct = StructProp->Struct;
    
24. 
    
25.             // Get the vector's "X" property
    
26.             UProperty* ChildProp = ScriptStruct->FindPropertyByName(VectorMemberName);
    
27. 
    
28.             // Cast to FloatProperty
    
29.             if (UFloatProperty* ChildFloatProp = Cast<UFloatProperty>(ChildProp))
    
30.             {
    
31. 
    
32.                 // Get
    
33.              //   float OldValue = ChildFloatProp->GetFloatingPointPropertyValue(StructAddress);
    
34.                 float OldValue = ChildFloatProp->GetPropertyValue_InContainer(StructAddress);
    
35. 
    
36.                 // Set
    
37.            //设置变量参数     ChildFloatProp->SetFloatingPointPropertyValue(StructAddress, NewValue);
    
38. 
    
39.                 return OldValue;
    
40.             }
    
41.         }
    
42.     }
    
43.     return 0.13141516;
    
44. }

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