Auto-centering text.

I was going to use the read function but decided to try and write one myself that auto centers as you type the text. I've come across a weird error that I don't recognize.

[string "term"]:9:bad argument # 2 to '?' (number expected, got no value)

Here's the code.

term.setBackgroundColor(colors.white)
term.clear()
term.setTextColor(colors.white)
sizeX, sizeY = term.getSize()
button = "Start"

term.setCursorPos(math.floor((sizeX - #button) / 2),math.floor((sizeY / 2) + 1))
term.setBackgroundColor(colors.blue)
write(button)

function checkPass(name)
    term.clear()
    print(name)
end

function getUser()
    local askUser = "Please enter your username."
    term.setCursorPos(math.floor((sizeX - #askUser) / 2), math.floor((sizeY / 2) - 1))
    term.setBackgroundColor(colors.white)
    term.setTextColor(colors.blue)
    textutils.slowPrint(askUser)
    term.setCursorPos(math.floor(sizeX / 2), math.floor(sizeY / 2))
    while true do
        --term.clearLine()
        if user then
            term.setCursorPos(math.floor((sizeX - #user) / 2))
        else
            term.setCursorPos(math.floor(sizeX / 2))
        end
        print(user)
        local event, pressed = os.pullEvent()
        if event == "char" then
            if user then
                user = "user" .. pressed
            else
                user = pressed
            end
        elseif event == "key" then
            if pressed == 8 then
                user = string.sub(user, 1, #user-1)
            elseif pressed == 13 then
                return user
            end
        end
    end
    checkPass(user)
end

function buttonCheck(x,y)
    if x > math.floor((sizeX - #button) / 2) and x < math.floor((sizeX + #button) / 2) then
        if y == math.floor((sizeY / 2) + 1) then
            term.setBackgroundColor(colors.white)
            -- term.setCursorPos(1,1)
            term.clear()
            getUser()
        end
    end
end

function getClick()
    event, t, x, y = os.pullEvent("mouse_click")
    buttonCheck(x,y)
end

while true do
    getClick()
end

Just hoping to tap into the vast knowledge of the pros. :)/>

edit: original code spacing didn't show up, fixed now.

Well, I can see two places where you use term.setCursorPos but only provide one number (look around lines 26 and 28). I'd bet that's where your problem is.

That was it, Thank you.

Can't believe I missed that. :blink:/>

messed around with it a bit more and I'm quite proud of one of the functions I made in it.

function newRead(mod)
while true do
  term.setCursorPos(1,math.floor(sizeY / 2))
  term.clearLine()
  if info then
   term.setCursorPos(math.floor((sizeX - #info) / 2), math.floor(sizeY / 2))
  else
   term.setCursorPos(math.floor(sizeX / 2),math.floor(sizeY / 2))
  end
  if info and mod then
   for i = 1, #info do
	write(mod)
   end
  else
   print(info)
  end
  local event, pressed = os.pullEvent()
  if event == "char" then
   if info then
	info = info .. pressed
   else
	info = pressed
   end
  elseif event == "key" then
   if pressed == 14 then
	info = string.sub(info, 1, #info-1)
   elseif pressed == 28 then
	return info
   end
  end
end
end

Basically the read function wasn't able to do what I wanted so I made my own. :)/>

Full code is available http://pastebin.com/6Fx25AT9

Any ideas for optimization are greatly appreciated.

The CC highlighting package for sublime text 2 has a center print function…

I'll have to check that out, but this function centers your text as you type it in. And you can put a mod in like * but you can use any character you want. So as you type yournamehere it comes out !!!!!!!!!!!!. or however else you want it.

always fun if your own way is more complicated that someone else's