startup

numSlot=0
distance=0
while distance<500 do
 for x,1,height do
   if turtle.detect() then
    turtle.dig()
   end
   if turtle.detectDown() then
     turtle.digDown()
   end

   turtle.down()
  end

  if not suck() then
    for x,1,height do
    turtle.up()
  end

  turtle.turnLeft()
  turtle.turnLeft()
  booln = 0
    while  not turtle.detect() do
      turtle.forward()
    end
    for slot,4,16 do
      turtle.select(slot)
      turtle.drop()
    end

    turtle.select(1)
    turtle.suckUp()
    turtle.select(2)
    turtle.suckUp()
    turtle.select(3)
    turtle.suckUp()
    turtle.turnLeft()
    turtle.turnLeft()
    for dist,1,distance do
      turtle.forward()
    end
    for x,1,height do
      turtle.down()
    end
    suck()
end
 if not turtle.detect() and turtle.getItemCount(1)>1 then
   turtle.select(1)
   turtle.placeDown()
 end
  for x,1,height do
  turtle.up()
 end

fuelUP()
end

function suck ()
turtle.select(4)
count=0
  for c,1,height do
    for slot,4,16 do
     count=count + turtle.getItemCount(slot)
     end
     if count>704 then
     return false
     end
    turtle.suckDown()
  end
return true
end
function fuelUP ()
if turtle.getFuelLevel()<=16 then
turtle.select(2)
if turtle.getItemCount(2)>1 then
turtle.refuel(1)
return true
end
end
return false
end