Question DOTS collisions isn't working

I have been working on a conveyer system similar to facotrio. but I cant seem to get collision to work.
if there are any better ways to handle conveyer systems please let me know.

Code (CSharp):

1. using Unity.Burst;
2. using Unity.Collections;
3. using Unity.Entities;
4. using Unity.Jobs;
5. using Unity.Mathematics;
6. using Unity.Transforms;
7. using Unity.Physics;
8. using Unity.Physics.Systems;
9.  
10. public partial class RETRY : ComponentSystem
11. {
12.     private BuildPhysicsWorld buildPhysicsWorld;
13.     private StepPhysicsWorld stepPhysicsWorld;
14.  
15.     private EndSimulationEntityCommandBufferSystem ecb;
16.  
17.     protected override void OnCreate()
18.     {
19.         base.OnCreate();
20.         buildPhysicsWorld = World.GetOrCreateSystem<BuildPhysicsWorld>();
21.         stepPhysicsWorld = World.GetOrCreateSystem<StepPhysicsWorld>();
22.         ecb = World.GetOrCreateSystem<EndSimulationEntityCommandBufferSystem>();
23.     }
24.  
25.     //[BurstCompatible]
26.     struct ConveyerSystemJob : ICollisionEventsJob
27.     {
28.         [ReadOnly] public ComponentDataFromEntity<ItemComponent1> AllItems;
29.         public ComponentDataFromEntity<ConveyerComponent> allConveyers;
30.         [ReadOnly] public ComponentDataFromEntity<ConveyerTag> allTaggedConveyers;
31.         [ReadOnly] public ComponentDataFromEntity<LocalToWorld> World;
32.  
33.         public EntityCommandBuffer ecb;
34.         public void Execute(CollisionEvent collisonEvent)
35.         {
36.             Entity entityA = collisonEvent.EntityA;
37.             Entity entityB = collisonEvent.EntityB;
38.  
39.  
40.             if (allTaggedConveyers.HasComponent(entityA) && allTaggedConveyers.HasComponent(entityB))
41.             {
42.                 return;
43.             }
44.  
45.             if (AllItems.HasComponent(entityA) && allTaggedConveyers.HasComponent(entityB))
46.             {
47.                 ConveyerComponent conveyerComp = allConveyers[entityB];
48.  
49.                 if (conveyerComp.next != Entity.Null)
50.                     return;
51.  
52.                 conveyerComp.next = entityA;
53.                 LocalToWorld LWorld = World[entityB];
54.  
55.                 ecb.AddComponent(entityA, new ItemConveyerComponent());
56.                 ItemConveyerComponent New = new ItemConveyerComponent();
57.  
58.                 New.distance = 1;
59.                 New.direction = LWorld.Forward;
60.  
61.                 ecb.SetComponent(entityA, New);
62.                 allConveyers[entityB] = conveyerComp;
63.             }
64.             else if (AllItems.HasComponent(entityB) && allTaggedConveyers.HasComponent(entityA))
65.             {
66.                 ConveyerComponent conveyerComp = allConveyers[entityA];
67.  
68.                 if (conveyerComp.next != Entity.Null)
69.                     return;
70.  
71.                 conveyerComp.next = entityB;
72.                 LocalToWorld LWorld = World[entityA];
73.  
74.                 ecb.AddComponent(entityB, new ItemConveyerComponent());
75.                 ItemConveyerComponent New = new ItemConveyerComponent();
76.  
77.                 New.distance = 1;
78.                 New.direction = LWorld.Forward;
79.  
80.                 ecb.SetComponent(entityB, New);
81.                 allConveyers[entityA] = conveyerComp;
82.             }
83.         }
84.     }
85.  
86.     protected JobHandle OnUpdate(JobHandle inputDeps)
87.     {
88.         var job = new ConveyerSystemJob();
89.         job.AllItems = GetComponentDataFromEntity<ItemComponent1>(false);
90.         job.allConveyers = GetComponentDataFromEntity<ConveyerComponent>(false);
91.         job.World = GetComponentDataFromEntity<LocalToWorld>(true);
92.         job.allTaggedConveyers = GetComponentDataFromEntity<ConveyerTag>(true);
93.         job.ecb = ecb.CreateCommandBuffer();
94.  
95.         JobHandle jobHandle = job.Schedule(stepPhysicsWorld.Simulation, inputDeps);
96.         //jobHandle.Complete();
97.         ecb.AddJobHandleForProducer(jobHandle);
98.         return jobHandle;
99.     }
100.  
101.     protected override void OnUpdate()
102.     {
103.         throw new System.NotImplementedException();
104.     }
105. }

that's the code:::

I got it working with the bare bones of collision and it worked, then I changed bits to this and now it isn't working. I also tried going back to the original code but still isn't working

added what the conveyer and item are i did scale the conveyer down so it was easier to work with...

 

Your collision response is on "Collide", but the collisionJob works on the collision Events. So Change the "Collision Response" to "Collide raise collision events".

 

thanks, but I just figured out it was the code that wasn't working, and I accidentally added the same photo twice.

Thankyou for responding though...