Make abstract base class in c# allow to have a constructor for inherited class

[LUNART231]

Describe the project you are working on

A 2D point & click.

Describe the problem or limitation you are having in your project

want to create a class inheriting CollisionObject2D, but cant override the constructor because is marked as internal in the c# CollisionObject2D class.

Describe the feature / enhancement and how it helps to overcome the problem or limitation

find a way to free the constructor for making him usuable.

Describe how your proposal will work, with code, pseudo-code, mock-ups, and/or diagrams

i dont know.

If this enhancement will not be used often, can it be worked around with a few lines of script?

it cant without exiting c# to gdscript.

Is there a reason why this should be core and not an add-on in the asset library?

because its relate to the code of the engine.

[Calinou]

Moving to discussion, as there is no concrete technical implementation provided.

[KoBeWi]

Why do you need to override the constructor? You can use methods like _Ready() or _EnterTree().

[LUNART231]

_Ready() and _EnterTree happen after the apply of the [Export] Serialization. So you can't initialize sub objects like Internal node or c# object that's rely on this value, because they will be set before this sub object start to exist.