Question why WithEntityAccess throw error

thank everybody, thank help me!
i don't know, why call "AddComponent", then ".WithEntityAccess()" throw exception.
entities package version 1.0.11
unity version 2022.3.6
------------------------------------------------
two system, this is my sources code.

Jump System, here handle JumpComponent, add force and remove JumpComponent

Code (CSharp):

1.  
2. using var cmd = new EntityCommandBuffer(Allocator.Temp);
3.  
4. /*use this code it ok.*/ //foreach (var (Jump, Velocity) in SystemAPI.Query<RefRO<JumpCmpt>, RefRW<PhysicsVelocity>>()) // no error
5.  
6. /*here throw error*/ foreach (var (Jump, Velocity, Entity) in SystemAPI.Query<RefRO<JumpCmpt>, RefRW<PhysicsVelocity>>().WithEntityAccess()) // throw error
7. {
8.     Velocity.ValueRW.Linear += Jump.ValueRO.Force;
9.     cmd.RemoveComponent<JumpCmpt>(Entity);
10. }
11. cmd.Playback(state.EntityManager);
12.  

Input Handle System, receive input then here add JumComponent

Code (CSharp):

1.          
2. if (Input.GetMouseButtonDown(0))
3. {
4.     using var cmd = new EntityCommandBuffer(Allocator.Temp);
5.     foreach (var (Debug, Entity) in SystemAPI.Query<RefRO<DebugCmpt>>().WithEntityAccess())
6.     {
7.         if (Debug.ValueRO.Name == "Player")
8.         {
9.             cmd.AddComponent(Entity, new JumpCmpt
10.             {
11.                 Force = new float3(0, 10, 0)
12.             });
13.             break;
14.         }
15.     }
16.     cmd.Playback(state.EntityManager);
17. }
18.  

-----------------------------------------------------------------
this is my throw call stack

Code (CSharp):

1.  
2. ObjectDisposedException: Attempted to access Unity.Entities.EntityTypeHandle which has been invalidated by a structural change.
3. Unity.Collections.LowLevel.Unsafe.AtomicSafetyHandle.CheckReadAndThrowNoEarlyOut (Unity.Collections.LowLevel.Unsafe.AtomicSafetyHandle handle) (at <b41119cc6741409ea29f63c7f98de938>:0)
4. Unity.Collections.LowLevel.Unsafe.AtomicSafetyHandle.CheckReadAndThrow (Unity.Collections.LowLevel.Unsafe.AtomicSafetyHandle handle) (at <b41119cc6741409ea29f63c7f98de938>:0)
5. Unity.Entities.ArchetypeChunk.GetEntityDataPtrRO (Unity.Entities.EntityTypeHandle entityTypeHandle) (at ./Library/PackageCache/com.unity.entities@1.0.11/Unity.Entities/Iterators/ArchetypeChunkArray.cs:1531)
6. Unity.Entities.Internal.InternalCompilerInterface.UnsafeGetChunkEntityArrayIntPtr (Unity.Entities.ArchetypeChunk chunk, Unity.Entities.EntityTypeHandle typeHandle) (at ./Library/PackageCache/com.unity.entities@1.0.11/Unity.Entities/Internal/InternalCompilerInterface.cs:228)
7. Game.JumpSys+IFE_384976868_0+TypeHandle.Resolve (Unity.Entities.ArchetypeChunk archetypeChunk) (at Unity.Entities.SourceGen.SystemGenerator/Unity.Entities.SourceGen.SystemGenerator.SystemGenerator/Temp/GeneratedCode/Assembly-CSharp/JumpSys__System_12707194250.g.cs:92)
8. Game.JumpSys+IFE_384976868_0+Enumerator.MoveNext () (at Unity.Entities.SourceGen.SystemGenerator/Unity.Entities.SourceGen.SystemGenerator.SystemGenerator/Temp/GeneratedCode/Assembly-CSharp/JumpSys__System_12707194250.g.cs:125)
9. Game.JumpSys.OnUpdate (Unity.Entities.SystemState& state) (at Assets/Sources/World/Systems/JumpSys.cs:28)
10. Game.JumpSys.__codegen__OnUpdate$BurstManaged (System.IntPtr self, System.IntPtr state) (at <62d0a0a36cd540a282971a4cc9704ec3>:0)
11. (wrapper native-to-managed) Game.JumpSys.__codegen__OnUpdate$BurstManaged(intptr,intptr)
12. Game.JumpSys+__codegen__OnUpdate_0000001B$BurstDirectCall.Invoke (System.IntPtr self, System.IntPtr state) (at <62d0a0a36cd540a282971a4cc9704ec3>:0)
13. Game.JumpSys.__codegen__OnUpdate (System.IntPtr self, System.IntPtr state) <0x19c61b4e250 + 0x0005a> in <62d0a0a36cd540a282971a4cc9704ec3>:0
14. (wrapper native-to-managed) Game.JumpSys.__codegen__OnUpdate(intptr,intptr)
15. Unity.Entities.WorldUnmanagedImpl+UnmanagedUpdate_0000158C$BurstDirectCall.Invoke (System.Void* pSystemState) (at <12241d7570bd4d5cadb8ce5bcbeb0ab8>:0)
16. Unity.Entities.WorldUnmanagedImpl.UnmanagedUpdate (System.Void* pSystemState) (at ./Library/PackageCache/com.unity.entities@1.0.11/Unity.Entities/WorldUnmanaged.cs:828)
17. Unity.Entities.WorldUnmanagedImpl.UpdateSystem (Unity.Entities.SystemHandle sh) (at ./Library/PackageCache/com.unity.entities@1.0.11/Unity.Entities/WorldUnmanaged.cs:913)
18. Unity.Entities.ComponentSystemGroup.UpdateAllSystems () (at ./Library/PackageCache/com.unity.entities@1.0.11/Unity.Entities/ComponentSystemGroup.cs:729)
19. UnityEngine.Debug:LogException(Exception)
20. Unity.Debug:LogException(Exception) (at ./Library/PackageCache/com.unity.entities@1.0.11/Unity.Entities/Stubs/Unity/Debug.cs:19)
21. Unity.Entities.ComponentSystemGroup:UpdateAllSystems() (at ./Library/PackageCache/com.unity.entities@1.0.11/Unity.Entities/ComponentSystemGroup.cs:740)
22. Unity.Entities.ComponentSystemGroup:OnUpdate() (at ./Library/PackageCache/com.unity.entities@1.0.11/Unity.Entities/ComponentSystemGroup.cs:693)
23. Unity.Entities.SystemBase:Update() (at ./Library/PackageCache/com.unity.entities@1.0.11/Unity.Entities/SystemBase.cs:418)
24. Unity.Entities.DummyDelegateWrapper:TriggerUpdate() (at ./Library/PackageCache/com.unity.entities@1.0.11/Unity.Entities/ScriptBehaviourUpdateOrder.cs:526)
25.  
26.  

 

help, need me submit more info again?
or what i missing?

 

please help me... is that not the right thing to do?

 

I did not forget you, i have debugged your problem during two hours, because i did not understood what was wrong with your problem (everything you are doing is right). It is just a simple mistake that is very hard to debug, but was actually in front of my eyes all of this time : Just remove the readonly from the OnUpdate of jumpSys.

 

thank, thank very much.