Turtle Startup

serverProtocol="update"
serverId=0
print("Starting turtle!")

posX,posY,posZ=gps.locate()

function locate()
    posX,posY,poZ=gps.locate()
end

for i=1,5 do
for i=16,1,-1 do
    slot=turtle.getItemDetail(i)

    if slot~=nil then
        if(slot.name=="computercraft:wireless_modem_advanced") then
            print("Equiping modem")
            turtle.select(i)
            turtle.equipLeft()
            break
        end
        if(slot.name=="minecraft:diamond_pickaxe") then
            print("Equiping Pickaxe")
            turtle.select(i)
            turtle.equipRight()
            slot=turtle.getItemDetail(i)
            if slot~=nil then
                if(slot.name=="advancedperipherals:geo_scanner") then
                    print("Transfering Geo Scanner!")
                    turtle.select(i)
                    turtle.transferTo(16,1)
                    break
                end
            end
            break
        end
        if(slot.name=="advancedperipherals:geo_scanner" and i~=16) then
                print("Transfering Geo Scanner!")
                turtle.select(i)
                turtle.transferTo(16,1)
                break
        end
    end
end
end





peripheral.find("modem", rednet.open)

while rednet.lookup(serverProtocol)==nil do
    sleep(1)
    print("Couldn't find main server. Retrying again soon!")
end
serverId=rednet.lookup(serverProtocol)

function runProgram()
shell.run("mainTurtle.lua")
end


lastMessage=os.clock()
isWaiting=false


function resetIfIdle()
    sleep(5)
    while isWaiting==false or lastMessage+20<os.clock() do
        sleep(2)
    end
    print("DIDNT RECEIVE CODE, RESENDING")
end

function getCode()
while true do

    lastMessage=os.clock()
    isWaiting=true
rednet.send(serverId,"mainTurtle.lua",serverProtocol)
local event, sender, message, protocol = os.pullEvent("rednet_message")
isWaiting=false
if protocol ~= nil then
   -- print("Received message from " .. sender .. " with protocol " .. protocol .. " and message " .. tostring(message))
    if protocol==serverProtocol then
        lastMessage=os.clock()

      shell.run("rm mainTurtle.lua")
      write_string_to_file("mainTurtle.lua", message)
      success,err=pcall(runProgram)
      if success==false then
        print(err)

      end
      print("Restarting soon!")

        sleep(10)
        lastMessage=os.clock()


    end
end
end
end
function write_string_to_file(filename, content)
    local file = assert(io.open(filename, "w"))  -- open in write mode (overwrite)
    file:write(content)
    file:close()
end

while true do
    parallel.waitForAny(resetIfIdle,getCode)
    sleep(0)
end