Is it possible to have widgets inside itself?

Authoring Twine
,
1

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Twine Version: 2.4.1
Story Format: Sugarcube V2

So I’m trying to transfer code I have in javascript to sugarcube and I was wondering if it’s possible to use a widget in itself kinda like how you would call a function within itself?

1 Like
2

Yes, it is.

3

If you mean recursively, like this…I don’t think so

<<widget "widget1">>
<<widget1>>
<</widget>>

Calling this by using <<widget1>> in a new passage will return errors




If you just want to use widgets inside of widgets, like this, then it’s possible.

<<widget "widget1">>
<<widget2>>
<</widget>>

<<widget "widget2">
<<print "this">>
<</widget>>

Calling this with <<widget1>> in a new passage will call <<widget2>>

4

Indeed you can call a <<widget>> inside itself.

I’ve done it, and it works as intended. The goal was to produce a random name from a list, and, if the reader doesn’t like the name, to offer to produce another (another random name, not another reader obviously).

Given $NomF, $NomM and $NomP all arrays.

<<widget "Noms">><span id="nom"><<if _args[0] == "1">><<textbox "$Nom" $NomM.random()>><<elseif _args[0] == "2">><<textbox "$Nom" $NomF.random()>><<else>><<textbox "$Nom" $NomP.random()>><</if>>
<<link "Proposer un autre nom">><<replace "#nom">><<Noms _args[0]>><</replace>><</link>></span><</widget>>
1 Like
5

You can use widgets recursively. The only issue is the same as with all recursion, recurse too deeply and you can overflow the stack.

1 Like
6

If I do something like this

<<widget "widget1">>
<<print "this">>
<<widget1>>
<</widget>>

And then call it with <<widget1>> I’d expect it to print “this” repeatedly.

Instead I get Error: <<widget1>>: error within widget code repeating. What have I done wrong?

If the issue is that it is repeating too deeply as you said, how do I limit it? (Now that I look more closely I see the “too much recursion” error at the very end).

7

This code looks like an infinite loop. There’s nothing to stop it.

8

First you need to determine when you want the action being done within the widget to stop being done.

Then you add a condition check (like the following) that will stop the widget being call recursively

eg. do you only want that action to be done a specific number of times? If so you could use a counter variable to determine when to stop calling the widget again.
note: you need to pre-initialise this counter variable sometime prior calling the widget the first time.

<<widget "widget1">>
	<<print "this">>
	<<set $counter += 1>>
	<<if $counter < 10>>
		<<widget1>>
	<</if>>
<</widget>>
1 Like
9

That works, thanks! I didn’t have any specific case in mind but it will be helpful in the future.