AddManager stopped to work

World.Active.AddManager(renderingDataSynchronizationEngine);

doesn't work anymore (the debugger doesn't show the system and the OnUpdate is not called) any clue? (The system is with [DisableAutoCreation])

 

Did you do

ScriptBehaviourUpdateOrder.UpdatePlayerLoop(world);

afterwards?

 

I personally use GetOrCreateManager, but like Creepgin said you need to update the player loop. If you look into the source you can see the call to UpdatePlayerLoop:

Unity.Entities.Hybrid\Injection\DefaultWorldInitialization.cs

Code (CSharp):

1. static ScriptBehaviourManager GetOrCreateManagerAndLogException(World world, Type type)
2. {
3.     try
4.     {
5.         return world.GetOrCreateManager(type);
6.     }
7.     catch (Exception e)
8.     {
9.         Debug.LogException(e);
10.         return null;
11.     }
12. }
13.  
14. public static void Initialize(string worldName, bool editorWorld)
15. {
16.     // ! Trimmed to show only key parts !
17.     var world = new World(worldName);
18.     World.Active = world;
19.     var systems = GetAllSystems(WorldSystemFilterFlags.Default);
20.    
21.     foreach (var type in systems)
22.     {
23.         var groups = type.GetCustomAttributes(typeof(UpdateInGroupAttribute), true);
24.  
25.         foreach (var g in groups)
26.         {
27.             var groupMgr = GetOrCreateManagerAndLogException(world, group.GroupType);
28.             var groupSys = groupMgr as ComponentSystemGroup;
29.  
30.             if (groupSys != null)
31.             {
32.                 groupSys.AddSystemToUpdateList(GetOrCreateManagerAndLogException(world, type) as ComponentSystemBase);
33.             }
34.         }
35.     }
36.  
37.     ScriptBehaviourUpdateOrder.UpdatePlayerLoop(world);
38. }

 

Thanks a lot for the help. I'll test tomorrow, didn't expect at all I had to register the engine myself, this means that I actually never seen it working and didn't notice.

Would it be the same for a job componentsystem?

 

@sebas77 If you just want to add it to the default SimulationSystemGroup, you can do

Code (CSharp):

1. var mySystem = world.GetOrCreateManager(typeof(MySystem));
2. var simGroup = world.GetOrCreateManager<SimulationSystemGroup>()
3. simGroup.AddSystemToUpdateList(mySystem);
4. simGroup.SortSystemUpdateList();
5. ScriptBehaviourUpdateOrder.UpdatePlayerLoop(world);

And yes, same for job systems. All relevant code for reference are in DefaultWorldInitialization.cs, ScriptBehaviourUpdateOrder.cs, and DefaultWorld.cs

 

There is still something I don't get (I didn't manage to make it work), I am not using a new world, I am using the default one, do I still have to use ScriptBehaviourUpdateOrder.UpdatePlayerLoop(world); on it (I tried, OnUpdate is still not called)?
@Creepgin last code actually made Unity hard crash!

 

If you are using the default initialization code, then you most likely don't need to manually do UpdatePlayerLoop(). Just remove the last line. I tested the following to be working:

Code (CSharp):

1. var world = World.Active;
2. var mySystem = world.GetOrCreateManager(typeof(MySystem));
3. var simGroup = world.GetOrCreateManager<SimulationSystemGroup>();
4. simGroup.AddSystemToUpdateList(mySystem as ComponentSystemBase);
5. simGroup.SortSystemUpdateList();

 

I think I sort of get it, any reason why I need to sort it though?

 

ScriptBehaviourUpdateOrder.UpdatePlayerLoop(World world)

inserts the 3 default system groups into the playerloop system list. If you are doing your own world initialization, then you need to make sure to call it at the end. Ofc, you can code your own custom UpdatePlayerLoop() too, if, for example, you need to put SimulationSystemGroup into FixedUpdate.

 

Thanks a lot. how would I customise the UpdatePlayerLoop? with SetPlayerLoop? SetPlayerLoop doesn't seem to get a world parameter, so how could I customise it just for a new world?

 

So there is no way to update the systems in a custom way? For example we want to simulate the physic multiple times in one frame, what is the best way to do that?

 

I actually would like to call myself explicity the update like N times in a row. We are already doing it and it works but feels hacky