Decker

Internet Janitor · 2022-10-28T19:18:05Z

This thread is for small questions about Lil, the Decker scripting language. If you have a more involved question, feel free to start your own thread. If we accumulate enough information for an FAQ I'll edit this post to include a link. The Lil manual can be found here .

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Lil Programming Questions Sticky

A topic by Internet Janitor created Oct 28, 2022 Views: 24,427 Replies: 394

Viewing posts 121 to 122 of 122 · Previous page · First page

JimBoReee2 days ago (1 edit)

I want to use a slider in X card to copy # canvas image in Y then paste it in X canvas. Here's the code:

on change val do
   if me.value = #
      X.paste[deck.Y.widget.#.copy[]]
   end
end

But it doesn't work when I chage the slider value. Am I doing something wrong?

Internet JanitorDeveloper2 days ago

"#" is not a valid Lil identifier; it is used in Lil scripts to indicate a comment, which ignores the remainder of the line. Lil identifiers are described in the Lil Reference Manual as follows:

Variable and function names may contain any alphanumeric characters (as well as ? and _), but must not start with a digit.

If you give a widget a name which is not a valid identifier, it will not be automatically available as a local variable, but it can be accessed by name from the card's ".widgets" dictionary:

card.widgets["#"]

Your description of what you're trying to do is inconsistent and unclear. If the idea is to- for example- index into images stored in a rich-text field named Y and paste the image corresponding to the value of the slider ("me") onto a canvas named X, you could use something like:

on change val do
 X.paste[Y.images[val]]
end

JimBoReee2 days ago (1 edit)

I'm using a slider to switch between images that I want to copy from one set of canvases into a single canvas. I'm not using a ritch text field.

Internet JanitorDeveloper2 days ago (1 edit)

Presuming the canvases are on the same card and have a naming convention like "c1", "c2", "c3", "c4" and the slider is set to an integer range between 0 and 3 you could write something like

on change val do
 canvases:c1,c2,c3,c4
 X.paste[canvases[val].copy[]]
end

JimBoReee2 days ago

I ended up using a field anyways, lol.

That said, I got a new question, how do I script a button to add or subtract from the existing value of the slider?

Internet JanitorDeveloper2 days ago(+1)

Presuming a slider named "slider1", you could give a button a script like

on click do
 slider1.value:slider1.value + 1
end

This situation is very similar to one of the examples in The Decker Guided Tour and one of the examples in the introductory primer in the Lil Reference Manual.

JimBoReee2 days ago(+1)

Thank you.

JimBoReee1 day ago

on click do
 slider1.value:slider1.value - 1
 slider1.event.change[val]
end

I tried using this code to change the value of the slider and execute this script:

on change val do
 Sphere.paste[Assets.images[val]]
 if me.value = 0
    button1.show:"solid"
    button2.show:"solid"
 else
    button1.show:"none"
    button2.show:"none"
 end
end

There is a range from 0 to 4 for the images in a field going down. But, for some reason, the 0th image gets pasted and not the third in the field.

I want it to paste the images in the order of values in the slider with each click and not skip to zero.

ahmwma1 day ago(+2)

I think you need to send the event to slider1 in a slightly different way:

slider1.event["change" val]

There's another post on the forums explaining more here.

And you'll also need to define what val is in this context. That could be in either script.

For now I put both changes in button script:

on click do
 slider1.value:slider1.value - 1
 val: slider1.value
 slider1.event["change" val]
end

JimBoReee1 day ago(+1)

Thank you!

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