Screen To Show A List

[TheChatotMaestro]

I'm trying to change this

Code: Select all

screen items_screen:
    frame:
        has vbox
        textbutton "one"
        textbutton "two"
        textbutton "three"
        textbutton "Back" action Return()

to a similar screen that will add and remove list items based on which items you have in your inventory. The inventory will be determined by a list (eg "example_list = [0, 3, 2]") that will have items added and subtracted to it using list append. The textbuttons will lead you to screens where more information on the items can be viewed. However, I only want textbuttons to show up if you have the item. How would I go about this?
Would this work?

Code: Select all

screen items_screen:
    frame:
        has vbox
        if "one" in "listname":
        	textbutton "one"
        if "two" in "listname":
        	textbutton "two"
        if "three" in "listname":
        	textbutton "three"
        textbutton "Back" action Return()

Or am I totally off-base?

[kivik]

Most programming languages will have a loop structure specifically to allow you to loop through all the items in your list. They're usually called a for loop: http://treyhunner.com/2016/04/how-to-lo ... in-python/ (scroll down to "for-in: the usual way")

So you want something like this:

Code: Select all

screen items_screen:
    frame:
        has vbox
        for i in listname:
            textbutton i action ???
        textbutton "Back" action Return()

Basically in a for i in list loop in python, it'll go through the loop as many times as there are items, and each iteration of the loop, i contains whatever value your current list item is. So you can directly reference i as the item (i.e. textbutton i in this case.) What you need to be more conscious of in this situation is what the screen action is going to be: It needs to incorporate i in some form, whether it's a Call() that uses i, or another screen action that takes i and make the action contextual to what the item is.

Let us know if you need more help with it.

[TheChatotMaestro]

It says the list is not defined

update: I forget if that error was even with this or something else but now I have parenthesis around it and it is working fine. So... parenthesis are a good thing i guess

[kivik]

Did you read the thing I linked? My code wasn't actual working code, but what it would look like. Hence the ??? in the button action.

In your example code you mentioned listname so I assumed you'd at least declared the list...