Help with Input and Lists

ID:2102700
 
Jun 19 2016, 1:45 am (Edited on Jun 19 2016, 2:44 am)
(See the best response by GinjaNinja32.)
Code:
Sell_Eggs()
    var/obj/egg/dEgg = input("Which Egg?","Eggs") in eggs
    del(dEgg)


Problem description:
I'm trying to let my user select which egg to sell.
eggs is a list that contains instances of obj/egg

Nothing happens when I activate this verb
Jun 19 2016, 3:11 am
Are you sure the 'eggs' list is populated correctly? If the list is empty there'll be no prompt. Your first step should be to verify the contents of the eggs list to make sure it actually contains what you think it contains.

Outside of that, the code you posted should function correctly if the list has valid entries.
Jun 19 2016, 5:05 am
 
obj
    egg
        name = "Testo"
        icon = 'Egg.dmi'
        icon_state = "1"
        New(n)
            ..()
            name = n


client.mob
    icon = 'Eggs.dmi'
    icon_state = "ground"
    var
        balance = 11350;
        slots = 10;
        eggs[0];
    verb
        Buy_Eggs()
            if(balance <= 100)
                usr << "Eggs cost 100 gold!"
            else if(eggs.len >= slots)
                usr << "You don't have room for more eggs!"
            else
                eggs.Add(new /obj/egg(input("Name Your Egg","Egg Naming")));
                balance -= 100
                usr << "[usr] bought an egg."
        Sell_Eggs()
            var egg_choices[eggs.len]
            for(var/n in 1 to eggs.len)
                var obj/egg/object = eggs[n]
                egg_choices["[n]. ([object])"] = object
            var dEgg = input("Which Egg?","Eggs") as null|anything in egg_choices
            if(dEgg)
                var obj/egg/object = egg_choices[dEgg]
                src << "You sold [object]!"
                del object
                for(var/n in 1 to eggs.len-1)
                    if(eggs[n]==null)
                        eggs.Swap(n,n+1)
                eggs.len-=1

        Check_Balance()
            usr << "[usr]'s Balance:[balance] "
    Stat()
        ..()
        stat("Eggs","[eggs.len]/[slots]")
        statpanel("Eggs",eggs)


Yes, There is a statpanel showing the contents of the list it seems to be populating correctly.

The work around I've found now, which seems super sloppy and totally unnecessary is making another list with referenced to the objects. Then based on which of those is chosen the object is deleted and then swap the first null spot in the list to the bottom and copy it to a shorter list, delete the original and copy the short to the original.

THIS IS SO GROSS AND UGLY and I don't understand why my original code wouldn't work as posted in the first post.
Jun 19 2016, 8:01 am
Best response
Replacing your verb with the following works as expected:
Sell_Eggs()
    var obj/egg/object = input("Which Egg?","Eggs") as null|anything in eggs
    if(!object) return
    src << "You sold [object]!"
    del object
    for(var/n in 1 to eggs.len-1)
        if(eggs[n]==null)
            eggs.Swap(n,n+1)
    eggs.len-=1



I'd suggest using `eggs -= object` rather than deleting it then trying to find nulls:
Sell_Eggs()
    var obj/egg/E = input("Which Egg?","Eggs") as null|anything in eggs
    if(!E) return
    src << "You sold [E]!"
    eggs -= E
    del E
Jun 20 2016, 1:16 pm
Thanks! I'll take your word it works and try it out later, it seems solid enough to work!

I appreciate this, I don't have a lot of experience with this. Things seem to work a little weird in byond.