While loops, loop limit

Hello guys I've been trying to make a password protected door on a server that I play on.
I want it to loop 3 times (3 guesses) before it ends the loop and outputs a redstone signal.
I've been working on it for a bit and just can't seem to figure it out (I'm a noob so don't go too hard)

os.pullEvent = os.pullEventRaw
local password = "password123"
local guess = 0
  while do
    term.clear()
    term.setCursorPos(1,1)
    write("Password: ")
    local input = read("*")
    if input == password then
    term.clear()
    term.setCursorPos(1,1)
    print("Correct!")
    rs.setOutput("right",true)
    sleep(5)
    rs.setOutput("right",false)
  else
    print("Try again...")
    guess = guess + 1

if guess == 3 then
  print("Good bye!")
  rs.setOutput("back",true)
  sleep(5)
  rs.setOutput("back",false)
  end
end

Again I'm not a pro coder or anything, but if you could point out my errors and tell me how I might fix them it would be much appreciated!

Thanks again!

while loops use a true/false condition to determine whether they should keep running or not, in the form

while <condition> do
  --Loop body
end

If you want the code to loop forever, or until exited with the break keyword, you can just use true for the condition.

What you do works but you need to do

while true do

Or you can do this

while not guess == 3

Or this:

for i = 1, 3 do
    -- Do stuff
end

Yeh I know but just to keep it simple for him/her

Thanks for the help guys I'll try it out.

superaxander, on 29 March 2013 - 11:09 PM said:

What you do works but you need to do

while true do

Or you can do this

while not guess == 3

So I tried what you mentioned here, I'm apparently not doing it right as I still am getting errors, does this look correct to you?

os.pullEvent = os.pullEventRaw
local password = "password123"
local guess = 0
  while not guess == 3 do
    term.clear()
    term.setCursorPos(1,1)
    write("Password: ")
    local input = read("*")
  if input == password then
    term.clear()
    term.setCursorPos(1,1)
    print("Correct!")
    rs.setOutput("right",true)
    sleep(5)
    rs.setOutput("right",false)
  else
    print("Try again...")
    guess = guess + 1

while guess == 3 do
  print("Good bye!")
  rs.setOutput("back",true)
  sleep(5)
  rs.setOutput("back",false)
  end
end

estrong1, on 30 March 2013 - 02:04 AM said:

superaxander, on 29 March 2013 - 11:09 PM said:

What you do works but you need to do

while true do

Or you can do this

while not guess == 3

So I tried what you mentioned here, I'm apparently not doing it right as I still am getting errors, does this look correct to you?

os.pullEvent = os.pullEventRaw
local password = "password123"
local guess = 0
  while not guess == 3 do
	term.clear()
	term.setCursorPos(1,1)
	write("Password: ")
	local input = read("*")
  if input == password then
	term.clear()
	term.setCursorPos(1,1)
	print("Correct!")
	rs.setOutput("right",true)
	sleep(5)
	rs.setOutput("right",false)
  else
	print("Try again...")
	guess = guess + 1

while guess == 3 do
  print("Good bye!")
  rs.setOutput("back",true)
  sleep(5)
  rs.setOutput("back",false)
  end
end

try this:

while guess < 3 do
--code
guess = guess + 1

that is what I know, and what error are you getting?

You miss an end of the if statement

Uhmm.. Here's a code that should work..

Spoiler

Added a function named cleanScreen() that
is basically the term.clear() term.setCursorPos(1,1)
But you just have to type cleanScreen()

os.pullEvent = os.pullEventRaw
local password = "password123"
guess = 0

function cleanScreen()
term.clear()
  term.setCursorPos(1,1)
end

function main()

  for i = 1,3 do
    cleanScreen()
      write("Password: ")
         local input = read("*")
      if input == password then
    cleanScreen()
    print("Correct!")
    rs.setOutput("right",true)
    sleep(5)
    rs.setOutput("right",false)


  elseif input ~= password then
    print("Try again...")
    guess = guess + 1
sleep(1)
end
  end

if guess == 3 then
   cleanScreen()
  print("Good bye!")
  rs.setOutput("back",true)
  sleep(5)
  rs.setOutput("back",false)
  end
end


main()

Uhmm.. Here's a code that should work..

Spoiler

Added a function named cleanScreen() that
is basically the term.clear() term.setCursorPos(1,1)
But you just have to type cleanScreen()

os.pullEvent = os.pullEventRaw
local password = "password123"
guess = 0

function cleanScreen()
term.clear()
  term.setCursorPos(1,1)
end

function main()

  for i = 1,3 do
    cleanScreen()
      write("Password: ")
         local input = read("*")
      if input == password then
    cleanScreen()
    print("Correct!")
    rs.setOutput("right",true)
    sleep(5)
    rs.setOutput("right",false)

<p> %2