NativeString64 can't be found

Hey all!

I'm trying to give some NPCs names with a NameComponent, but when I try to use a NativeString64 I run into the error "Assets\Scripts\NameComponent.cs(9,16): error CS0246: The type or namespace name 'NativeString64' could not be found (are you missing a using directive or an assembly reference?)".

Here's the code that's producing the error:

Code (CSharp):

1. using System;
2. using Unity.Entities;
3.  
4. namespace NewUnityProject.ECS
5. {
6.     [Serializable]
7.     public struct Name : IComponentData
8.     {
9.         public NativeString64 Description;
10.     }
11.  
12.     public class NameComponent : ComponentDataProxy<Name> { }
13.  
14. }

My other components seem to work fine, I just can't seem to use the NativeString64 type. I'd like to use NativeString64, so if anyone could help me fix this I would be very appreciative! Let me know if there's any other information I should provide!

 

Have you got the latest collections package

 

Hmmm, now that you mention it, my collections package looks a little funky.

If I look under "All Packages" in Package Manager I see that I have Collections Version 0.5.2, with the "up to date" button greyed out.

But if I look under "In Project" the Collections package doesn't appear.

Does that sound right?

 

I think that means Collections was pulled in as a dependency for another package (probably entities?). If you toggle Advaced -> Show Dependencies it'll show

 

Hmmm, good thinking, but I don't see it listed as a dependency for any of the packages "In Project".

 

NativeString* has been replaced with FixedString*, pretty much 1-to-1, although they added more functions to FixedString* to bring them closer in line with string's standard api. They're in the process of phasing out NativeString* but it depends on the package versions you have.

 

Ah so I thought about Tertle's suggestion to look at the Collections package version. Turns out it wasn't a version problem, it was a namespace problem. I just put in "using Unity.Collections;" and it worked! Here's the functioning code:

Code (CSharp):

1. using System;
2. using Unity.Entities;
3. using Unity.Collections;
4.  
5. namespace NewUnityProject.ECS
6. {
7.     [Serializable]
8.     public struct Name : IComponentData
9.     {
10.         public NativeString64 Description;
11.     }
12.  
13.     public class NameComponent : ComponentDataProxy<Name> { }
14.  
15. }

I thought NativeString64 was part of the Entities package, my bad!

Also, thanks for the tip recursive! I was suspecting I might have been stumbling on an outdated string solution in my google searches. Turns out MY problem was a matter of using the right package, but it's good to know about what's to come!

 

Thanks man you saved my day!