chat2

function receive()
  print( "Receiving on channel: "..channel )
  modem.open( channel )
  local e, s, c, r, message, dist = os.pullEvent("modem_message")
  print(">"..message)
  print("  ("..dist.." m away)")
end

function getInput()
  --global channel
  print( "Ready to transmit on channel: "..channel)
  nextline=""
  while nextline ~= "/quit" do
    io.write("\n:")
    nextline = io.read()
    -- todo - break long messages
    modem.transmit(channel,channel, nextline)
  end
  print("Exiting.")
end

print("What channel are you connecting to?")
txtchannel = io.read()
channel = tonumber(txtchannel)
-- todo - input validation

print("Where is the modem?")
print(" (right, left, top, bottom, front, back)")
side = io.read()
-- todo - input validation
modem = peripheral.wrap(side)

parallel.waitForAny(receive,getInput)