ConvertToEntity with connected Components

How do I find the entity of a connected component?
I tried the following code, but it does not work right. Both have the "NodeBehaviour".

The converter of the parent component using a new empty entity, not the same from "conversionSystem.GetPrimaryEntity(this.parent.gameObject);".

Code (CSharp):

1. [DisallowMultipleComponent]
2. [RequiresEntityConversion]
3. public class NodeBehaviour : MonoBehaviour, IConvertGameObjectToEntity
4. {
5.     [SerializeField]
6.     private NodeBehaviour parent;
7.  
8.     public void Convert(Entity entity, EntityManager dstManager, GameObjectConversionSystem conversionSystem)
9.     {
10.         dstManager.AddComponent(entity, typeof(Node));
11.         if(this.parent != null)
12.         {
13.             var parent = conversionSystem.GetPrimaryEntity(this.parent.gameObject);
14.             dstManager.AddComponentData(entity, new NodeParent() { Value = parent });
15.         }
16.     }
17. }
18.  

 

You also need to implent IDeclareReferencedPrefabs interface. Here is an example.
Have a look at the possible workflows here

 

In my case, the problem was another.

I checked the m_GameObjectToEntity NativeHashMap in the GameObjectConversionMappingSystem
It stores the entity's index in the m_Enteties array with the instance ID of the GameObject.

On first Node, both the parent and the node isself are in the hashmap
in this case the child has Entity 1 and the Parent Entitiy 2

Next step convert the Parent,Entity 1 and Entity 2 not in the Entity array,

Looks like different instances of GameObjectConversionSystem for each confertor.

Solution:
Only one ConvertToEntity on an empty Gameobject as parent for all other Gameobjects.