[LUA] Rednet Chat

I need to make so when you write a thing, the last thing you wrote goes 1 line up.
like this

Lysdal : hey
Lysdal : hello
Lysdal : hai
Message :

i will code the rednet part later myself

rednet.open("left")
term.clear()
name = os.getComputerLabel()
while true do
term.clearLine()
term.setCursorPos(1,17)
write("Message: ")
message = read()
term.setCursorPos(1,16)
print(name.." : "..message)
end

there isnt any errors i just want to get the chat history thing working

function:

function chatHistory(history)
  for n=15, 1, -1 do
    term.setCursorPos(1, n)
    write(history[#history-(7.5-(n-7.5))])
  end
end

didn't test it but I think it should work
PS.: You need a table where all names and messages should be stored. store it like:

history[#history+1]=name..": "..msg

this table has to be the first param of chatHistory

rednet.open("left")
term.clear()
name = os.getComputerLabel()

function chatHistory(history)
  for n=15, 1, -1 do
    term.setCursorPos(1, n)
    write(history[#history-(7.5-(n-7.5))])
  end
end

while true do
    term.clearLine()
    term.setCursorPos(1,17)
    write("Message: ")
    message = read()
    chatHistory(history[#history+1]=name..": "..msg)
end

gives me a
error

bios:206: [string "chat"]:17: ')' expected

I believe on the second to last line, where it says chatHistory(history[#history+1]=name..": "..msg), it needs to be chatHistory(history[#history+1]=name..","..msg). instead of colon, a comma goes there.

Comma wouldn't work..
You're missing ')' because you didn't do
chatHistory(history[#history+1]=name..": "..msg))

craniumkid22, on 08 August 2012 - 03:54 PM said:

I believe on the second to last line, where it says chatHistory(history[#history+1]=name..": "..msg), it needs to be chatHistory(history[#history+1]=name..","..msg). instead of colon, a comma goes there.

The colon is a string, so it could be anything.

Noodle, on 08 August 2012 - 04:07 PM said:

Comma wouldn't work..
You're missing ')' because you didn't do
chatHistory(history[#history+1]=name..": "..msg))

And now you have an extra ).

The problem is that you have to create the table, then assign the values in a separate line, and then pass it as a parameter.

local history = {}
...
-- in some part of the code that receives messages:
history[#history + 1] = receivedMessage
-- or
table.insert(history, receivedMessage)
...
-- then to print it out:
chatHistory(history)

Hey did an error in my function!
Change 7,5 to 7 like so:

function chatHistory(history)
  for n=15, 1, -1 do
    term.setCursorPos(1, n)
    write(history[#history-(7-(n-7))])
  end
end

because with 7,5 it will set the cursor position to 0 sometimes

ardera, on 08 August 2012 - 06:16 PM said:

Hey did an error in my function!
Change 7,5 to 7 like so:

function chatHistory(history)
  for n=15, 1, -1 do
	term.setCursorPos(1, n)
	write(history[#history-(7-(n-7))])
  end
end

because with 7,5 it will set the cursor position to 0 sometimes

It can be:

write(history[#history - (14 - n)])