local t = turtle

function macro(str)
  for i = 1, #str do
    local c = str:sub(i,i)
    if c == "m" then
      t.dig()
    elseif c == "b" then
      t.back()
    elseif c == "d" then
      t.down()
    elseif c == "D" then
      t.placeDown()
    elseif c == "f" then
      t.forward()
    elseif c == "l" then
      t.turnLeft()
    elseif c == "p" then
      t.place()
    elseif c == "r" then
      t.turnRight()
    elseif c == "u" then
      t.up()
    elseif c == "#" then
      t.refuel(32)
    else
      t.select(tonumber(c))
    end
  end
end

while true do
  while true do
    t.select(1)
    if t.getItemCount() > 3 then
      t.select(2)
      if t.getItemCount() > 4 then
        break
      end
    end
    sleep(10)
  end
  print "Go!"
  -- go into spawner
  macro("6#lfluumff")
  -- place wither
  macro("ddl2pufpbpuDf1pbprbp")
  -- go to idle position
  macro("b5pddlfl")

  sleep(20)
end