slave

local CLIENT_PORT = 0
local SERVER_PORT = 1544

local modem = peripheral.find("")
modem.open(SERVER_PORT)

print("I am listening to channel "..SERVER_PORT)

while true do
local event, modemSide, senderChannel, replyChannel, message, distance = os.pullEvent("modem_message")

local x, y, z = gps.locate(5)

if message == "w" then
        turtle.forward()
    elseif message == "s" then
        turtle.back()
    elseif message == "a" then
        turtle.turnLeft()
    elseif message == "d" then
        turtle.turnRight()
    elseif message == "u" then
        turtle.up()
    elseif message == "do" then
        turtle.down()
    elseif message == "locate" then
        if not x then
            modem.transmit(CLIENT_PORT, SERVER_PORT, "Failed to get my location!")
        else
            modem.transmit(CLIENT_PORT, SERVER_PORT, "I am at (" .. x .. ", " .. z .. ", " .. y .. ")")
        end
    end
end