itch.io

got it! Thanks for replying my flurry of questions and giving me leads to overcome my issues :)

I'm documenting my fix here, in case someone has similar needs.

1. Adding a template script.

I have created a view function in the prototype's template script, calling me.init[], the function that uses internal widgets to restore persistent data

on view do
  me.init[]
end

2. Exposing the inner init function.

The init function is located in the prototype's script, so it cannot be reached from a contraption's script. It has to be exposed by creating a get_x function in that same script

on init do
  # here should be some logic to restore persistent data
end
on get_init do
  # expose init function, so that it can be called from outside the prototype's script
  init
end

With these two changes: every contraption made from that prototype is created with that view function, which lets me send "synthetic" view events & the way these events are processed is still relying on the prototype's functions.