Can't Move Object with LocalToWorld

I want to move object to position(0,0,0) with LocalToWorld but dont know why my object wasn't moving at all.

Code (CSharp):

1. [UpdateInGroup(typeof(SimulationSystemGroup))]
2.     [UpdateBefore(typeof(TransformSystemGroup))]
3.     public class MoveCubeSystem : JobComponentSystem
4.     {
5.         private ComponentGroup m_UnitGroup;
6.  
7.  
8. //        [BurstCompile]
9.         public struct MoveUnitJob : IJobProcessComponentDataWithEntity<LocalToWorld, MovementComponentData>
10.         {
11.             public float dt;
12.  
13.             public void Execute(Entity entity, int index, ref LocalToWorld localToWorld, [ReadOnly] ref MovementComponentData movementComponentData)
14.             {
15. //                var currentForward = localToWorld.Forward;
16.                 var currentPosition = localToWorld.Position;
17.                 var directionToDestination = movementComponentData.Destination - currentPosition;
18.  
19.                 //no turn rate
20.                 var nextHeading = math.normalizesafe(directionToDestination);
21.  
22.                 localToWorld = new LocalToWorld
23.                 {
24.                     Value = float4x4.TRS(
25.                         new float3(localToWorld.Position + (nextHeading * movementComponentData.speed * dt)),
26.                         quaternion.LookRotationSafe(nextHeading, math.up()),
27.                         new float3(1.0f, 1.0f, 1.0f))
28.                 };
29.  
30.                 Debug.Log("Index : " + index + " currentPosition :" + currentPosition + " --- directionToDestination: " + nextHeading +
31.                           " NextPostion :" + localToWorld.Position + " NextHeading :" + localToWorld.Forward);
32.             }
33.         }
34.  
35.         protected override JobHandle OnUpdate(JobHandle inputDeps)
36.         {
37.             var job = new MoveUnitJob()
38.             {
39.                 dt = Time.deltaTime
40.             };
41.  
42.             var moveCubeHandle = job.ScheduleGroup(m_UnitGroup, inputDeps);
43.             inputDeps = moveCubeHandle;
44.  
45.             m_UnitGroup.AddDependency(inputDeps);
46.  
47.             return inputDeps;
48.         }
49.  
50.         protected override void OnCreateManager()
51.         {
52.             m_UnitGroup = GetComponentGroup(new EntityArchetypeQuery
53.             {
54.                 All = new[] {
55.                     ComponentType.ReadWrite<LocalToWorld>(),
56.                     ComponentType.ReadOnly<MovementComponentData>()
57.                 }
58.             });
59.         }
60.     }

There anything that I missed or doing wrong ?

 

You update BEFORE TransformSystemGroup which generates LocalToWorld matrix from

Code (CSharp):

1. // LocalToWorld = Translation * Rotation * NonUniformScale
2. // (or) LocalToWorld = Translation * CompositeRotation * NonUniformScale
3. // (or) LocalToWorld = Translation * Rotation * Scale
4. // (or) LocalToWorld = Translation * CompositeRotation * Scale
5. // (or) LocalToWorld = Translation * Rotation * CompositeScale
6. // (or) LocalToWorld = Translation * CompositeRotation * CompositeScale

in TRSToLocalToWorld job in TRSToLocalToWorldSystem, which mean all what you doing before - rewrited by transform system. If you want move object you should edit Translation component associated with entity.

 

I got it, thank you!!!

 

I have a Object has 2 parts : Body + Eye. I notice that the EndFrameParentSystem take alot CPU time than I expected. And I think it's quite weird, Do you have any ideal?

 

One question (not related on your last question). You enabled GPU Instancing on material?

 

Sorry about that, I dont want to spam on Forum so I ask you in this topic, should I make a new topic ?
Yes, my material has been enable GPU Instacing, but I turn it off then the result is the same, EndFrameParentSystem still take alot of CPU time.

 

And it’s shouldn’t It was side question as I told in previous message

 

Burst enabled?

 

[BurstCompile] is not enable. If I enable it, the result is the same.
Also I got very weird error if I enable [BurstCompile] for Job follow this topic : https://forum.unity.com/threads/burstcompile-make-translation-action-wrong.652165/

 

I say not about your code, but about in general. Because transform system uses burst compiler too. And also don’t forget about safety checks which editor only anf will be removed in build. I recommend you profile not in editor, but in build.

 

I think I found what issue is : I enable Leak Detection : Full stack traces

I turn it off then issue has gone

 

Ah, I even not think about that, because I expected you checked it in first place

 

I just run through the ECS boid example, it seems that the BoidSystem is also updating the LocalToWorld component before the TRSToLocalToWorldSystem.How did it work?

 

I just found an [WriteGroup(typeof(LocalToWorld))] Attribute on the Boid Component, it can exclude other systems from operating the certain Component.That's why it works.

 

Yep is legit solution for overriding EntityQuery.