Having problems with the pure ecs simple example

As with a lot of people i am trying to wrap my head around and learn the ecs.
So my first stupid obstacle was here.


Now it seems to me that it should the cube in the scene should be rotating, of course it doesnt and i am pretty lost. Btw the system does come up in the "Used by systems" dropdown in the GameObjectEntity

 

Try to remove CopyTransformFromGameObjectComponent.

 

Thanks a lot that worked like a charm!
I was wondering if you could provide some of the reasoning behind why that worked, if possible?

My reasoning was that the the copy from and to would be required to get the actual transform and then write it back.
was it a priority problem for example ? or copy from overrides the copy to components?

 

it was a priority problem. my solution is writing copy systems myself. copy transfrom from go, do some game logic like walk, then copy transfrom to go

 

So in theory, no idea how to actually write this up, you can get the copy from and pass it as a dependency to your job?
In which case you have perfect control.
Is that possible?

 

use UpdateInGroup/UpdateBefore/UpdateAfter attributes. I defined several groups which make my systems in order.

 

Thanks for the clarification @mike_acton

@isbdnt I get the approach, although it feels like are missing still. In any case I am still not familiar enough to start playing with dependencies though I have bigger things to tackle on the way of learning

 

I just updated to preview 11 and at some point, suddenly, looks like CopyTransformToGameObjectSystem is executed before CopyInitialTransformFromGameObjectSystem, so now all the GameObjectEntities move to 0,0,0 without rotation when I enter play mode. When I look at the Entities package code, both systems have this tag:

[UpdateBefore(typeof (EndFrameTransformSystem))]

...and nothing else, so looks like the order of execution is not enforced. That can explain why was working for a while and suddenly not.

Anyone else got this?