Baking component that is disabled by default

Unity Engine
, ,
1

Hey,

I’m trying to bake a component who’s default enableable state is disabled. I thought I had it working with the following code:

    public class DisabledComponentTestAuthoring : MonoBehaviour
    {
        class DisabledComponentTestBaker : Baker<DisabledComponentTestAuthoring>
        {
            public override void Bake(DisabledComponentTestAuthoring authoring)
            {
                var entity = GetEntity();
                _State.Ecb.AddComponent<DisabledComponentTest>(entity);
                _State.Ecb.SetComponentEnabled<DisabledComponentTest>(entity, false);
            }
        }
    }

But for some reason, when I have an open subscene in the hierarchy, I get a load of errors about entities not existing and empty object references. Otherwise it works just fine, both with burst and without.

Note, I’m deliberately trying to avoid using systemstate/cleanup components.

Any ideas?

Thanks

2

Im pretty sure you cant use an ECB during the baking process, as the entity does not fully exsit in the world yet.

The correct baking process would be as follows:

var entity = base.GetEntity();
base.AddComponent<DisabledComponentTest>();
base.SetComponentEnabled<DisabledComponentTest>(entity, false);

More information can be found here:
https://github.com/Unity-Technologies/EntityComponentSystemSamples/blob/master/Docs/baking.md
https://github.com/Unity-Technologies/EntityComponentSystemSamples/blob/master/Docs/examples/baking.md

3

If you look at IBaker.AddComponent(), it actually uses an ECB. Unfortunately, there isn’t a IBaker.SetComponentEnabled() function and I can’t find any other way to achieve disabling a component at bake time…

4

Baking System

5

Thanks for the reply. On first inspection, this looks like exactly what I’m after. I had missed baking systems in my research. However, I’ve just tried one and it seems to add the component correctly that I want to disable but the disabling itself doesn’t actually save to the prefab i.e. it is still enabled. I wonder if this is because the enabled flag is on the chunk and not the component itself… not sure.

The only way I can get it to work is have a system on startup that disables the components before the prefabs are instantiated. It’s not the worst solution but I really expected the baking system to work.

6

There is issue with enablable components state saving in subscene - close your subscene and enablable component will save properly, if your subscene is opened - it wouldn’t save it correctly.

7

Wahey! That seems to work, awesome! Thanks a lot for the help :smile: