Iterate over copies except for UI layer

lazza

Hi,

I'm trying to figure out the best way to loop through all my copies, but exclude elements of the UI Layer. I could probably find a way to check within the each function, but that seems ham-handed.

ct.types.each(function () {
    // do stuff to the copies in the room but not the UI layer
});

CoMiGo

Ct.js doesn't mark copies as those which are in a UI layer or not. The differentiation happens for rooms only.

You can loop over ct.room.children, but then you should make sure you don't loop over those entities that are not copies but, for example, backgrounds, tilesets, and pixi objects.

There is also copy.getRoom(): https://docs.ctjs.rocks/Copy.html#copy-getroom

You can use it in ct.types.forEach.

lazza

CoMiGo copy.getRoom() seems exactly what I’m looking for. Thank you!

lazza

And indeed the solution doesn't seem ham-handed at all. It's simply one additional succinct line of code:

ct.types.each(function () {
  if(this.getRoom().name === 'LayerUI') return;
  // do stuff to the copies in the room but not the UI layer
});

lazza

Update. Actually I'm finding it's better to do it the following way, because I also have child copies within copies that I want to ignore as well. This ensures only copies one level deep in my room are included.

ct.types.each(function () {
   if (this.parent.name !== 'Level1') return;
   // do stuff to the copies in the room but not the UI layer AND not children of children
});