Need help with rednet

I want to make a program where I can type in a message and ID to send the message to, and the computer will send this message. But how can i get this same program to recieve a message while waiting for a text input?

If you are using os.pullEvent, there is an event called "rednet_message".

Any example fo how to use that?

Use a parallel with two functions; one waiting for an input and the other waiting for a rednet_message event.

while true do
   evt, arg1, arg2, arg3 = os.pullEvent()
   if evt == "rednet_message" then
      print(arg1, ": ", arg2)
   elseif evt == "key" then
      -- add char to input line.
   end
end

That should help you along the way, and will use less resources than parallel.

Without using the parallel it wouldn't capture the rednet message if the user was typing something to send

SuicidalSTDz, on 17 March 2013 - 12:27 PM said:

Without using the parallel it wouldn't capture the rednet message if the user was typing something to send

?
I don't think you can click a key while a rednet message is fired.
No event can occur the same time as anotherone.

JokerRH, on 17 March 2013 - 12:32 PM said:

SuicidalSTDz, on 17 March 2013 - 12:27 PM said:

Without using the parallel it wouldn't capture the rednet message if the user was typing something to send

?
I don't think you can click a key while a rednet message is fired.
No event can occur the same time as anotherone.

we are not firing two events, we are comparing the event returned after it is fired.

RemiX, explain! I am on my phone…

JokerRH, on 17 March 2013 - 12:32 PM said:

SuicidalSTDz, on 17 March 2013 - 12:27 PM said:

Without using the parallel it wouldn't capture the rednet message if the user was typing something to send

?
I don't think you can click a key while a rednet message is fired.
No event can occur the same time as anotherone.

If you use os.pullEvent, then I'm quite sure you can

Talk to me like I'm an idiot, I can't make any sense out of these replies. If i want to do this: Computer waits for either the user to type something, or to recieve a message. If the computer recieves a message, then I want it to display the message, If the computer gets a tex input from the user, then i want it to be able to use it to send a message to an ID.

@remiX: But then using parallel has the same effect. So in any way, suicidalSTDz statement that only parallel would work is false.
Parallel will resume the coroutine with the new event, so it will only pull the next event after it has resumed and waited for all the coroutines it handled. Therefor it results in the same effekt as Omega's programm.
@Pebbe19: OmegaVest posted one of the solution you can use.

Pebbe19, on 17 March 2013 - 12:51 PM said:

Talk to me like I'm an idiot, I can't make any sense out of these replies. If i want to do this: Computer waits for either the user to type something, or to recieve a message. If the computer recieves a message, then I want it to display the message, If the computer gets a tex input from the user, then i want it to be able to use it to send a message to an ID.

I am not here to talk to people with an idiotic tone. I am here to help people with problems in a logical way. With this being said, I am going to opt out of this conversation. o/

Edit: I said the parallel would capture the event when a user is typing

Depends if you want to have a long code with your own 'read' function, if not than you use parallel.

local input, sID, msg
local id = 9

term.clear() term.setCursorPos( 1, 1 )

local function waitForInput()
	term.setCursorPos( 1, 1 )
	write( ' > ' )
	input = read()
	rednet.send( id, input )
	print( '\nSent ' .. input .. ' to ID: ' .. id )
end

local function waitForRednet()
	sID, msg = rednet.recieve()
	print( '\nReceived: ' .. msg .. ' from ID: ' .. sID )
end

parallel.waitForAny( waitForInput, waitForRednet )

SuicidalSTDz, on 17 March 2013 - 12:55 PM said:

Edit: I said the parallel would capture the event when a user is typing

Look at the code of the parallel api. Coroutines are not running at the same time. If one will be resumed, all others are stopped until that routine yields.

remiX, on 17 March 2013 - 01:00 PM said:

Depends if you want to have a long code with your own 'read' function, if not than you use parallel.

local input, sID, msg
local id = 9

term.clear() term.setCursorPos( 1, 1 )

local function waitForInput()
	term.setCursorPos( 1, 1 )
	write( ' > ' )
	input = read()
	rednet.send( id, input )
	print( '\nSent ' .. input .. ' to ID: ' .. id )
end

local function waitForRednet()
	sID, msg = rednet.recieve()
	print( '\nReceived: ' .. msg .. ' from ID: ' .. sID )
end

parallel.waitForAny( waitForInput, waitForRednet )

This was alot easier to understand than the code OmegaVest gave me, although I'll try to be able to input the id without editing the program, i want to be able to send to different computers.

JokerRH, on 17 March 2013 - 01:01 PM said:

SuicidalSTDz, on 17 March 2013 - 12:55 PM said:

Edit: I said the parallel would capture the event when a user is typing

Look at the code of the parallel api. Coroutines are not running at the same time. If one will be resumed, all others are stopped until that routine yields.

I am more than aware how the two work. Look at remiX,s code. That is what I was trying to get at.

remiX, on 17 March 2013 - 01:00 PM said:

Depends if you want to have a long code with your own 'read' function, if not than you use parallel.

local input, sID, msg
local id = 9

term.clear() term.setCursorPos( 1, 1 )

local function waitForInput()
	term.setCursorPos( 1, 1 )
	write( ' > ' )
	input = read()
	rednet.send( id, input )
	print( '\nSent ' .. input .. ' to ID: ' .. id )
end

local function waitForRednet()
	sID, msg = rednet.recieve()
	print( '\nReceived: ' .. msg .. ' from ID: ' .. sID )
end

parallel.waitForAny( waitForInput, waitForRednet )

I tried this out, I get this: parallel:22: par:15: attempt to call nil
Line 15 is this: sID, msg = rednet,recieve():

Pebbe19, on 17 March 2013 - 02:09 PM said:

Line 15 is this: sID, msg = rednet,recieve():

It's rednet.receive() (A '.' and 'receive')

Is there no way of replicating read() in a os.pullEvent() ?

There is, of course.

Spoiler

local function inputAndRednet( replaceChar, x, y )
	local input = ''
	term.setCursorBlink(true)
	term.setCursorPos( x, y )
	replaceChar = replaceChar and replaceChar:sub( 1, 1 ) or nil
	while true do
		local event, p1, p2, p3 = os.pullEvent()
		if event == "char" then
			-- Character event
			input = input .. p1
			write( replaceChar or p1 )
		elseif event == "key" then
			if p1 == keys.backspace and #rString >= 1 then
				-- Backspace
				input = input:sub( -2 )
				xPos, yPos = term.getCursorPos()
				term.setCursorPos(xPos-2, yPos)
				write( input:sub( -2 ) .. ' ' )
			elseif p1 == keys.enter then
				-- Enter key to stop waiting for user input
				return 'input', input
			end
		elseif event == "rednet_message" then
			-- Rednet message
			return 'rednet.message', { senderID = p1, msg = p2, dist = p3 }
		end
	end
end

rednet.open( 'right' ) -- side of modem

term.clear() term.setCursorPos( 1, 1 )
local sType, info = inputAndRednet( nil, 3, 3 )
term.clear() term.setCursorPos( 1, 1 )

if sType == 'input' then
	print( 'Your inputted text: ' .. info )
elseif sType == 'rednet.message' then
	print( 'Message received.' )
	print( '     SenderID: ' .. info.senderID )
	print( '      Message: ' .. info.msg )
	print( '     Distance: ' .. info.dist )
end

[attachment=1080:t.PNG]