skyside

local stop = 0
local fuellevel = 0
local ox, oy, oz = nil, nil, nil
cx, cy, cz = nil, nil, nil
local turned = 0
-- local  x,  y,  z = nil, nil, nil
direct = 0

rednet.open("right")
ox, oy, oz = gps.locate(3)

function  doit()
   fuellevel = turtle.getFuelLevel()
   print("fuellevel = "..fuellevel)
   if fuellevel == 0 then
      print("Please put fuel in slot1.")
      while fuellevel == 0 do
         turtle.refuel()
         fuellevel = turtle.getFuelLevel()
         os.sleep(1)
      end
      print("Thank you :D")
    end
end

function finddirect1()
   if not turtle.forward() then
       if turned ~= 3 then
          turtle.turnRight()
          turned = turned + 1
          finddirect1()
       else
           print("I need space in front of me!")
       end
   else
   finddirect2()
   end
end


function finddirect2()
cx, cy, cz = gps.locate(3)
   if cx and cy and cz then
      if cx < ox then
         direct = 3
      end
      if cx > ox then
         direct = 1
      end
      if cz < oz then
         direct = 4
      end
      if cz > oz then
         direct = 2
      end
   else
      print("fail")
   end
end


if ox and oy and oz then
   print(ox..", "..oy..", "..oz)
   doit()
   finddirect1()
   if stop == 0 then
      print(""..direct)
   end
   cx, cy, cz = gps.locate(3)
else
   print("Couldn't get position")
end