[Quick BP to C++] Core Redirector - Asset to C++

[Roy_Wierer.Seda145]

Added a struct core redirector in \Config\DefaultEngine.ini, tested in the following formats (not all at once):

[CoreRedirects]
+StructRedirects=(OldName="/Game/_Core/Data/Structs/World/Weather/Seasonal/S_OLD_Weather_Season.S_OLD_Weather_Season",NewName="/Script/GameCore.S_WeatherSeason")
+StructRedirects=(OldName="/Game/_Core/Data/Structs/World/Weather/Seasonal/S_OLD_Weather_Season",NewName="/Script/GameCore.S_WeatherSeason")
+StructRedirects=(OldName="/Game/_Core/Data/Structs/World/Weather/Seasonal/S_OLD_Weather_Season",NewName="S_WeatherSeason")
+StructRedirects=(OldName="S_OLD_Weather_Season",NewName="/Script/GameCore.S_WeatherSeason")
+StructRedirects=(OldName="S_OLD_Weather_Season",NewName="S_WeatherSeason")
+StructRedirects=(OldName="S_OLD_Weather_Season.S_OLD_Weather_Season",NewName="S_Weather_Season")
+StructRedirects=(OldName="S_OLD_Weather_Planetary",NewName="/Script/GameCore.S_WeatherPlanetary",OverrideClassName="/Script/CoreUObject.Struct")

Redirector is supposed to redirect a blueprint struct asset to a c++ USTRUCT (BlueprintType), however it does not redirect anything. The rules in this example were added one by one during testing. Adding multiple lines at once results in a logged message that there are “conflicting rules”.

Expectation:
Properties, datatables, BP nodes using old struct datatype (BP) should be redirected to c++ datatype.

Actual result:
Nothing happens.

[Roy_Wierer.Seda145]

bump

[Roy_Wierer.Seda145]

Can this be automated or am I going to spend all summer on manually making / breaking / clicky clicky blueprint nodes?

[Roy_Wierer.Seda145]

bump

[Roy_Wierer.Seda145]

bumpp

[ElgSoft]

@.Seda145

StructRedirects

Have you tried to fix the conflicting rules? Some are the exact same OldName

But other then that I think that for redirect Blueprint stuff you should do something like this (I have never tried BP to code only code to code):

Blockquote
+StructRedirects=(OldName=“{BlueprintStruct}”,NewName=“/Script/{Module}.{NativeStruct}”,OverrideClassName=“/Script/CoreUObject.Struct”)

Blockquote
OverrideClassName
“(Optional) Specifies a change to the underlying class of the UCLASS. This is generally used to change a Blueprint class to a native class.”

[Roy_Wierer.Seda145]

@ElgSoft

Have you tried to fix the conflicting rules?

I tested the rules one by one, I just posted them all at once to show what I have tried already. At one point I tried them all at once just to see if the log would show anything and that’s when the “conflict” message appeared, so at least I know it is doing something.
Using the rules one by one results in absolute nothing, not even a log message.

@ElgSoft

OverrideClassName

I’m going to test this, I thought documentation wrote this for UCLASS only. Will reply after testing.

[Roy_Wierer.Seda145]

This format has been tested and does not work:

+StructRedirects=(OldName=“S_OLD_Weather_Planetary”,NewName=“/Script/GameCore.S_WeatherPlanetary”,OverrideClassName=“/Script/CoreUObject.Struct”)

[ElgSoft]

Did some test and I can’t get it to work either for BPStruct to CodeStruct.
Nothing even happen if I try to redirect BPStruct to BPStruct…

Redirect CodeStruct to CodeStruct work fine.

So not sure if there are some more magic you need to do or if it’s just broken.

[Roy_Wierer.Seda145]

bump

[Roy_Wierer.Seda145]

bump

[Roy_Wierer.Seda145]

Related for c++ to c++ and probably BP to c++, to make the matter more complex the redirector may fail silently after adding it properly.

Widgets destroyed after moving c++ class from project to plugin

[KuzbassCOT]

Hi! Have you been successful?
I’ve been trying all day to replace the BP structure with C++. I was able to do it with ENUM, but the structure is unresponsive.

[Roy_Wierer.Seda145]

Not at all. I gave up fighting. This is another dead / half working feature. Best to start from scratch in c++ and develop modules one by one, then at the absolute last moment implement blueprints if you absolutely have to.

[bendemott]

Bump, seems to still be broken.

I have a blueprint to C++ enum redirector working. No luck with structs.

If I had cmd line argument -DebugCoreRedirects I get a message confirming when something is redirected… Absolutely nothing when it comes to the structs I’ve redirected, no error, no message, just nothing.

[E_PepeGamer]

bump same here

[UnrealUser2020]

Try it like this:

For enums, use regular EnumRedirects, but with ValueChanges parameter set for each variable name as with structs.

[mamuteek]

I recently faced a similar issue and found a solution, so just wanna share it here. Due to a subtle bug in UE StructRedirects is not processed properly, so if using a StructRedirects I needed to complement it with ObjectRedirects like this

+StructRedirects=(OldName=“”, NewName=“”, OverrideClassName=“/Script/CoreUObject.ScriptStruct”)
+ObjectRedirects=(OldName=“”, NewName=“”, OverrideClassName=“/Script/CoreUObject.ScriptStruct”)