Excuse me, how to write and read same component in two entity? thank

Unity Engine
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1

this is example, it throw exception. please how to write and read same component in two entity?
what is the best implementable? what is best performance?
thank.
cannot change readonly ComponentLookup to readwrite add [NativeDisableParallelForRestriction], because parallel other system readwrite PosComp.

Exception: 
The writeable ComponentTypeHandle<Game.Editor.PosComp> Job.JobData.__TypeHandle.__Game_Editor_PosComp_RW_ComponentTypeHandle is the same ComponentLookup<Game.Editor.PosComp> as Job.JobData.Lookup, two containers may not be the same (aliasing).

    public struct PosComp : IComponentData, IEnableableComponent
    {
        public float X;
        public float Y;
    }

    public struct BindComp : IComponentData, IEnableableComponent
    {
        public Entity Target;
    }

    public partial struct BindSystem : ISystem
    {
        public void OnUpdate(ref SystemState state) => state.Dependency = new Job()
        {
            Lookup = SystemAPI.GetComponentLookup<PosComp>(true),
        }.ScheduleParallel(state.Dependency);

        [WithAll(typeof(PosComp), typeof(BindComp))]
        private partial struct Job : IJobEntity
        {
            [ReadOnly] public ComponentLookup<PosComp> Lookup;

            private void Execute(ref PosComp pos, in BindComp bind)
            {
                var target = Lookup[bind.Target];
                pos.X = target.X;
                pos.Y = target.Y;
            }
        }
    }
2

Try removing the IEnableableComponent from your components and see if the error persists?

3

You can’t safely do this in parallel as you are trying to do it. You have a couple of options:

  1. Double-buffer your PosComp with a backup component or hashmap or NativeStream (fastest), so that what you are reading from and writing to are different.
  2. Use Schedule instead of ScheduleParallel (though be warned you don’t really have control over which entities update first, so some will see updated PosComp while others won’t.