lol

--11--
function forward()
 while true do
  if turtle.forward() then
   break
   else
   turtle.attack()
   turtle.dig()
  end
 end
end

function up()
 while true do
  if turtle.up() then
   break
   else
   turtle.digUp()
   turtle.attackUp()
  end
 end
end

function down()
 while true do
  if turtle.down() then
   break
   else turtle,attackDown()
   turtle.digDown()

  end
 end
end


local wherex, wherey, wherez,a,b,c,homey,turtley

function comebackhome()

 rednet.open("left")
 local a,b = rednet.receive()
 b = wherex
 local a,b = rednet.receive()
 b = wherez
 local a,b = rednet.receive()
 b = homey

 local x,y,z =  gps.locate()
 homey - y = wherey


 for i = 1, wherey do
  up()
 end

 turtle.turnRight()
 turtle.turnRight()

 for i = 1, wherez do
  forward()
 end

 turtle.turnRight()

 for i = 1,wherex() do
  forward()
 end

 turtle.turnRight()

end

function cycle()

 wherey = 0
 turtle.turnRight()
 for i = 1,wherex do
  forward()
 end

 turtle.turnLeft()

 for i = 1,wherez do
  forward()
 end

 while true do
  if turtle.detectDown() then
   if not turtle.digDown() then
    break --bedrock--
    else down()
    wherey = wherey + 1
   end
   else down()
   wherey = wherey + 1
  end
 end

 while wherey > 0 do
  up()
  wherey = wherey - 1

     if wherey > 0 then
      up()
      wherey = wherey - 1
     end

  for i = 1,16 do

   if turtle.getItemDetail(i) then
    if turtle.getItemDetail(i).name == "minecraft:cobblestone" then
     turtle.select(i)
     turtle.placeDown()
    end
   end
  end
 end

 for i = 1,16 do
  turtle.select(i)

  if turtle.getItemDetail() then
   if (turtle.getItemDetail().name == "minecraft:cobblestone") or (turtle.getItemDetail().name == "minecraft:stone") or (turtle.getItemDetail().name == "minecraft:dirt") then
    turtle.placeDown()
    turtle.Drop()
   end
  end


 turtle.turnRight()
 turtle.turnRight()

 for i = 1,wherez do
  forward()
 end

 turtle.turnRight()

 for i = 1,wherex do
  forward()
 end

 turtle.turnRight()


 rednet.send(26,wherex)
 os.sleep(1)
 rednet.send(26,wherez)

end


function cycle2()
 for i = 1,15 do

 cycle()
 wherez = wherez + 1
 end
end

function cycle3()

 for i = 1,15 do

  cycle2()
  wherex = wherex + 1
 end
end
----