Unique Component

Hi,

I was wondering if you will implement something to have Unique Component/ComponentData.
For instance for a single player game, you will have only one "Player" Component living in the World.

Right now you can only inject Arrays of components, so you always need to iterate through them, which make typing more code.

Entitas had a "Unique" attribute if you want reference.

Thanks

 

This is not a "no" vote for this feature, but coming from the Java world, I am use to lots (OMG, lots and lots) of boilerplate. I haven't done it yet, but I plan to make snippets in Visual Studio to generate that boilerplate for me with just a few keystrokes. It shouldn't be hard to add a new Create menu option to make components and systems, but I tend to group them in a few files instead of one per file so the snippets make more sense for me.

 

There's a shared component interface that does something like this. It's in the docs here: https://github.com/Unity-Technologi...master/Documentation/content/ecs_in_detail.md

 

Shared doesn't mean Unique.
In the sample they used a SharedComponent for look of the models, it's always the same mesh, always the same material, so you can share that between entity.

What I meant was, accessing a unique component, or maybe a shortcut to access the first entity in the array.

Instead of having:

Code (CSharp):

1. struct PlayerData
2.         {
3.             public int Length;
4.  
5.             public ComponentDataArray<PlayerInput> Input;
6.         }

Something like:

Code (CSharp):

1. struct PlayerData
2.         {
3.             public PlayerInput Input;
4.         }

Assuming only one PlayerInput can be alive in the World of course