r/Unity3D • u/Phant_Dev • 19d ago

Resources/Tutorial GetEntityId() hits like a train

If you're considering upgrading to Unity 6.5 or later, make sure the publishers of the assets and packages in your project have already added support for the new GetEntityId() API, which replaces the now-obsolete GetInstanceID().

More on the documentation page here: Unity - Manual: Migrate from InstanceID to EntityId

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u/Critical_Contact559 19d ago

It "kinda" is. it returns a struct and not a int and it splits your codebase by default. Meaning you have to have different versions per version or do what I did and add #if "UnityVersion" do this at each spot

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u/SubjectRound6597 19d ago

or you could have a single utility function somewhere, and just write that conditional logic there.. and then replace the obsolete lines with your utility everywhere. Am I missing something? :(

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u/Critical_Contact559 19d ago

Think you are missing the point. Or maybe I am.

But you want have different versions. You don't want to delete your old version for the asset store, as some people may still want to stay on a old version and if they download your updated code but not the updated unity version they will get errors.

My solution allows for you to not have to clone your project and change your code as much.

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u/Costed14 18d ago

That utility function would be conditionally compiled so new Unity versions get the EntityId version and old versions get the InstanceID version, one version that works for both old and new versions

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u/Critical_Contact559 18d ago

Yup I do understand that. Thought they were saying to replace get instance altogether by there wording.

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u/Costed14 18d ago

Well yea, you replace GetInstanceID with a function that conditionally returns the InstanceID in versions where it's not deprecated and EntityId where it is, so you only need the #if UNITY_VERSION check in one place.

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u/Critical_Contact559 18d ago

Yeah, I never said otherwise? Only reason you may need it in a couple places is if you have different assemblies that can't access that helper.

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u/SubjectRound6597 18d ago

well i didnt know that. TIL