My Code isnt adding up?

In the code I'm writing I have:

y = turtle.getItemCount(2)

later down the line I use said variable by typing:

if y ~= 3
then
turtle.select(2)
turtle.turnLeft()
turtle.turnLeft()
turtle.suck(3-y)
turtle.turnLeft()
turtle.turnLeft()
end

I then made a backup code to recheck to ensure I had the correct number of items by typing:

if y ~= 3
then
print "storage empty"
return
else
print " "
end

and even though it gets all its correct items it still says "storage empty", that is until I change the second set up to:

if turtle.getItemCount(2) ~= 3
then
print "storage empty"
return
else
print " "
end

then everything works fine, well at least it did until I just tried it right now. what am I doing wrong?

first of all code tags are your friend.

[code ]
-- your code here
-- these should have no spaces to get this lovely white box!

you can put the then on the same line as the if.

Lastly somewhere 'y' must have been changed. I'm not seeing anything that would change y here. post your full code either here or on pastebin and give us the link.

CCJJSax, on 14 September 2016 - 05:18 PM said:

Lastly somewhere 'y' must have been changed. I'm not seeing anything that would change y here. post your full code either here or on pastebin and give us the link.

Well, as far as I understand his problem this is exactly what needs to happen.
You're checking slot #2 for the amount of items - if it differs from three, it'll pull the needed amount from another inventory (I guess). (By the way, if your amount is above three you will encounter problems as you want to pull a negative amount of items).

So, after you pulled the items, the variable y still contains the value from before checking. So even if you pulled, let's say two items, y will still contain one.

if y ~= 3 then
  turtle.select(2)
  turtle.turnLeft()
  turtle.turnLeft()
  turtle.suck(3-y)
  turtle.turnLeft()
  turtle.turnLeft()
  y = turtle.getItemCount( 2 )
end

This time y would actually get updated after pulling the necessary items and the next if-statement should run smoothly.

Oh good call. I was thinking it was getting changed and didn't even think about it needing to just be updated.

Sorry I haven't posted since yesterday, got busy and didnt get a chance to look at my code, I'll give this a try, if it doesn't work I'll post my whole code.

now I'm getting attempt to call nil

here's my code:

http://pastebin.com/5f8znRFg

You cannot call Main() before it is declared. Move your Main() call to the bottom of your script.

ohhh lmao, I'm stupid

Thanks everyone, all of your tips worked! :D/>

by the way, how do I bypass "By the way, if your amount is above three you will encounter problems as you want to pull a negative amount of items"

You were requesting 3-(number of items entered). If you enter 1, you request 2. If you request 3, you request 0. What behavior to you want instead?

well he stated above that if it had more than I wanted it would try to pull negative and cause an error, I just made a new if statment saying:

if y > 3
then
turn
turn
drop
turn
turn
y = getitemcount 2
end

that way if it has more than it should, it just puts it back and tries again.

Seems to work as I intended