chunkmine

local height = {...}[1]
function checkEC()
  local dump = false
  for i=3,16,1 do
    turtle.select(i)
    if turtle.getItemCount() > 16 then
      dump = true
    end
    if i == 16 && turtle.getItemCount() > 0 then
      dump = true
    end
  end
  if dump == true then
    turtle.select(1)
    turtle.digUp()
    turtle.placeUp()
    for i=3,16,1 do
      turtle.select(i)
      turtle.dropUp()
    end
    turtle.select(1)
    turtle.mineUp()
  end
  if turtle.getFuelLevel() < 1000 then
    turtle.digUp()
    turtle.select(2)
    turtle.placeUp()
    turtle.suckUp()
    turtle.refuel()
    turtle.digUp()
  end
end

function mine()
  checkEC()
  while turtle.detect() do
    turtle.dig()
  end
end

function move()
  while turtle.detect() do
    mine()
  end
  turtle.forward()
end

function main()
  for y=1,height-5,1 do
    turtle.digDown()
    turtle.dig()
    for x=1,15,1 do
      for z=1,15,1 do
        move()
      end
      if x % 1 == 0 then
        turtle.turnLeft()
        move()
        turtle.turnLeft()
      else
        turtle.turnRight()
        move()
        turtle.turnRight()
      end
    end
  end
end

main()