State Tree Any Enum doesn't work with...any enum? Enum Compare in UE5.3.2

Development Programming & Scripting
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1

We just moved our project from 5.1 to 5.3.2, and now our NPC state tree states that use Enum Compare as an enter condition don’t work. If I try to bind the BP’s enum class variable to one side of enum compare, I get a red triangle with the hover text saying the binding is incompatible with “State Tree Any Enum” property, and the state tree doesn’t work

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Again, the same state trees with the same bindings worked in 5.1

Does this have anything to do with the TObjectPtr being added to the FStateTreeAnyEnum struct’s Enum variable?

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Either way, if this is a bug can anyone recommend a workaround?

1 Like
2

I’ve just run into this issue too.
I’ve found that if I create a State Tree Evaluator Blueprint (called like ‘AI Bindings’) then populate it’s variables with all the vars I need to bind to (including the enum) then the tree compiles normally anyway - even though it shows in UI as having an error.

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3

Yes, I have the same problem, it case unpacking. I think it’s a bug in UE5.3.

4

Same issue here. Compiled with no error yet not functional.

5

Same problem, Unreal shouldn’t have launched immature new features

6

In my case it’s working fine, it’s just that when I open the EnumCompare condition my IDE complains at FStateTreePropertyBindings::ResolveCopyType and says it does not match StateTreeAnyEnum but a part from that the logic is working fine at runtime.

I’m using enums like this:

UENUM(BlueprintType)
enum class EEnumType: uint8

and the enum property that I’m binding to in the StateTree is declared like this:

UPROPERTY(VisibleAnywhere)
EEnumType EnumType;
7

I get the warning too but it compiles and works at runtime—no idea why this special Struct type is not exposed in blueprints tho.

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8

Having the same issue, compiled but not functioning.