startup

function turtleWrite(turtX, turtY, turtZ, turtDir, address)
  local a = fs.open("turt"..address, "w")
  a.writeLine(turtX)
  a.writeLine(turtY)
  a.writeLine(turtZ)
  a.writeLine(turtDir)
  a.close()
end
function turtleRead(address)
  local a = fs.open("turt"..address, "r")
  local x = a.readLine()
  local y = a.readLine()
  local z = a.readLine()
  local dir = a.readLine()
  print("Sending an update to turtle " ..address.. "!")
  rednet.send(address, x)
  rednet.send(address, y)
  rednet.send(address, z)
  rednet.send(address, dir)
end
print("Ready to receive signals!")
rednet.open("right")
while true do
  local id, command = rednet.receive()
  if command == "updatePos" then
    local flag = true
    while flag do
      local address, x = rednet.receive()
      if address == id then
        flag = false
      end
    end
    local flag = true
    while flag do
      local address, y = rednet.receive()
      if address == id then
        flag = false
      end
    end
    local flag = true
    while flag do
      local address, z = rednet.receive()
      if address == id then
        flag = false
      end
    end
    local flag = true
    while flag do
      local address, dir = rednet.receive()
      if address == id then
        flag = false
      end
    end
    turtleWrite(x, y, z, dir, id)
  elseif command == "needUpdate" then
    turtleRead(id)
  end
end