replacement for ComponentDataArray

I am struggling to find a sample for how to access an array of entity components in a job system such as IJobProcessComponentDataWithEntity.

With ComponentSystem, one can create an array of entities using something like this:

using (var selectedEntities = m_selectedVEntities.ToEntityArray(Allocator.TempJob))

...
but that uses only the main thread.

Is there an alternative with IJobProcessComponentDataWithEntity ?

Many thanks

 

Thanks, Joachim. I am sorry to sound like a dimwit noob. Do you have a short worked example, I could follow from?

 

I write jobs like this and it magically pass entity to job

Code (CSharp):

1. public class TestSystem : JobComponentSystem
2. {
3.     private ComponentGroup m_group;
4.     protected override void OnCreateManager()
5.     {
6.         m_group = GetComponentGroup(ComponentType.Create<Position>());
7.     }
8.  
9.     protected override JobHandle OnUpdate(JobHandle inputDeps)
10.     {
11.         inputDeps = new Job().Schedule(this, inputDeps);
12.         return inputDeps;
13.     }
14.  
15.     struct Job : IJobProcessComponentDataWithEntity<Position>
16.     {
17.         public void Execute(Entity entity, int index, ref Position c0)
18.         {
19.             // Do stuff
20.         }
21.     }
22. }

For IJob it would look something like this I think

Code (CSharp):

1. public class TestSystem : JobComponentSystem
2. {
3.     private ComponentGroup m_group;
4.     protected override void OnCreateManager()
5.     {
6.         m_group = GetComponentGroup(ComponentType.Create<Position>());
7.     }
8.  
9.     protected override JobHandle OnUpdate(JobHandle inputDeps)
10.     {
11.         var job = new Job() {array = m_group.ToEntityArray(Allocator.TempJob, out inputDeps)};
12.         inputDeps = job.Schedule(inputDeps);
13.         return inputDeps;
14.     }
15.  
16.     struct Job : IJob
17.     {
18.         [DeallocateOnJobCompletion]
19.         public NativeArray<Entity> array;
20.  
21.         public void Execute()
22.         {
23.             // Do another stuff
24.         }
25.     }
26. }

 

That's great. Thanks )