ECS Error missing JobHandle.Complete()

Hello together!

I´m new to this forum. I´m currently trying out the ECS / DOTS Stuff and try to find as many resources as possible. Unfortunately its not super easy to do so. The documentation is not very abundant atm (or I didn´t find the right spot to read) so any tips are highly appreciated. Also stuff gets old pretty fast. How do you guys keep track?

I used Youtube atm for the most part and followed along the following video:

For him the code works but for me it fails. I used exactly the same packages that he used with Unity 2019.3.0f6. The Errorcode is the following:

InvalidOperationException: The previously scheduled job PickupSystem:TriggerJob writes to the NativeArray TriggerJob.UserJobData.rotationSpeedEntities. You must call JobHandle.Complete() on the job PickupSystem:TriggerJob, before you can read from the NativeArray safely.

I already tried stuff from other threads as you can tell by seeing the out comments.
At the moment I dont understand what to do. Also I dont understand

The code for the trigger system is the following:

Code (CSharp):

1. using Unity.Collections;
2. using Unity.Entities;
3. using Unity.Jobs;
4. using Unity.Physics.Systems;
5. using Unity.Physics;
6.  
7.  
8. public class PickupSystem : JobComponentSystem
9. {
10.     private BeginInitializationEntityCommandBufferSystem bufferSystem;
11.     private BuildPhysicsWorld buildPhysicsWorld;
12.     private StepPhysicsWorld stepPhysicsWorld;
13.  
14.     protected override void OnCreate()
15.     {
16.         bufferSystem = World.GetOrCreateSystem<BeginInitializationEntityCommandBufferSystem>();
17.         buildPhysicsWorld = World.GetOrCreateSystem<BuildPhysicsWorld>();
18.         stepPhysicsWorld = World.GetOrCreateSystem<StepPhysicsWorld>();
19.     }
20.  
21.     protected override JobHandle OnUpdate(JobHandle inputDeps)
22.     {
23.         TriggerJob triggerjob = new TriggerJob
24.         {
25.             rotationSpeedEntities = GetComponentDataFromEntity<RotationSpeedData>(),
26.             entitiesToDelete = GetComponentDataFromEntity<DeleteTag>(),
27.             commandBuffer = bufferSystem.CreateCommandBuffer()
28.  
29.         };
30.  
31.         JobHandle varJobHandle = triggerjob.Schedule(stepPhysicsWorld.Simulation, ref buildPhysicsWorld.PhysicsWorld, inputDeps);
32.         //bufferSystem.AddJobHandleForProducer(varJobHandle);
33.         //varJobHandle.Complete();
34.         return varJobHandle;
35.     }
36.  
37.     private struct TriggerJob : ITriggerEventsJob
38.     {
39.         public ComponentDataFromEntity<RotationSpeedData> rotationSpeedEntities;
40.         [ReadOnly] public ComponentDataFromEntity<DeleteTag> entitiesToDelete;
41.         public EntityCommandBuffer commandBuffer;
42.  
43.         public void Execute(TriggerEvent triggerEvent)
44.         {
45.             TestEntityTrigger(triggerEvent.Entities.EntityA, triggerEvent.Entities.EntityB);
46.             TestEntityTrigger(triggerEvent.Entities.EntityB, triggerEvent.Entities.EntityA);
47.         }
48.  
49.         private void TestEntityTrigger(Entity entity1, Entity entity2)
50.         {
51.             if (rotationSpeedEntities.HasComponent(entity1))
52.             {
53.                 if (entitiesToDelete.HasComponent(entity2)) { return; }
54.                 commandBuffer.AddComponent(entity2, new DeleteTag());
55.                
56.             }
57.  
58.         }
59.  
60.     }
61. }
62.  

 

Hi, did you manage to find a solution for this as I am having the same issue?