Question How to add a parameter to a custom node, like a toggle?

Hello!

I have a custom node where I'd like to add a parameter on top (a boolean toggle) - similar to "Inputs" in the 'Add' node:


I was reading through the manual (https://docs.unity3d.com/Packages/com.unity.visualscripting@1.8/manual/vs-create-custom-node.html) but didn't find anything about this.

Overall I struggle a lot to find a proper documentation or reference for custom nodes, widgets, inspectors etc for visual scripting. So any hints or resources would be appreciated.

 

Hello there!

You need to use the [Inspectable, UnitHeaderInspectable] attributes.

Code (CSharp):

1. using Unity.VisualScripting;
2. public class QuickTestUnit : Unit
3.     {
4.         [SerializeAs(nameof(toggle))]
5.         bool toggle;
6.  
7.         [DoNotSerialize]
8.         [Inspectable, UnitHeaderInspectable]
9.         public bool Toggle { get => toggle; set => toggle = value; }
10.  
11.         protected override void Definition()
12.         {
13.         }
14.     }

You can look at the source code of the VisualScripting custom units SwitchOnString. You need activate Registry packages (in Preferences > External Tools > Generate .csproj files for: > Registry packages) and look for class that inherit Unit.




Also instead of a boolean I mostly use an enum which is much more descriptive IMO.