ICompoentData must be blittable(No managed object is allowed on the struct)

Hi I'm trying to convert my grid pathfinding code over and I'm running into a issue. I'm trying to use a array to hold a collection of grid nodes. I'm getting a error saying the collection bust be blittable and no managed object is allowed on the struct. I'm looking at the examples and can't find any components that are using collections.

Code (CSharp):

1. using System;
2. using Unity.Collections;
3. using Unity.Entities;
4. using Unity.Mathematics;
5. using UnityEngine;
6.  
7. [Serializable]
8. public struct ComponentDataGrid : IComponentData
9. {
10.     public GridNode[] gridNodes;
11. }
12.  
13. [Serializable]
14. public struct GridNode
15. {
16.     public float3 worldPosition;
17.     public int3 index;
18. }
19.  
20. public class ComponentGrid : ComponentDataWrapper<ComponentDataGrid> { }

 

I think you need to use NativeArray or some other unity collection.

 

Iv tried that and that does not work eather.

 

Currently you have to use a ISharedComponentData as arrays and all native containers are not blittable. Afaik Unity is working towards to make NativeArrays possible to use in IComponentData

 

Thank you. Can I use job system with ISharedComponentData?

 

You can, but you have to use native containers inside jobs.

 

Thanks again.

 

Please could you briefly expand on this, I'm do something very similar setting up a graph structure.