livingstuff.lua

-- livingstuff v0.1

local SLOT_INPUT = 1
local SLOT_OUTPUT = 15
local SLOT_TRASH = 3

local SLEEP_TIME = 60

function trydig(slot)
  turtle.select(slot)
  if turtle.detect() then
    turtle.dig()
  end
end

function trydigup(slot)
  turtle.select(slot)
  if turtle.detectUp() then
    turtle.digUp()
  end
end

function trydigdown(slot)
  turtle.select(slot)
  if turtle.detectDown() then
    turtle.digDown()
  end
end

function digforward(slot)
  trydig(slot)
  turtle.forward()
end

function digright(slot)
  turtle.turnRight()
  digforward(slot)
end

function digup(slot)
  trydigup(slot)
  turtle.up()
end

function digback(slot)
  turtle.turnRight()
  turtle.turnRight()
  digforward(slot)
end

function digleft(slot)
  turtle.turnLeft()
  digforward(slot)
end

function digdown(slot)
  trydigdown(slot)
  turtle.down()
end

function digloop(slot)
  for _ = 1, 4 do
    digright(slot)
    digforward(slot)
  end
  digup(slot)
end

function placedown()
  turtle.select(SLOT_TRASH)
  turtle.digDown()
  if turtle.getItemCount(SLOT_INPUT) > 0 then
    turtle.select(SLOT_INPUT)
    turtle.placeDown()
  elseif turtle.getItemCount(SLOT_INPUT + 1) > 0 then
    turtle.select(SLOT_INPUT + 1)
    turtle.placeDown()
  end
end

function placeloop()
  for _ = 1, 4 do
    digright(SLOT_TRASH)
    placedown()
    digforward(SLOT_TRASH)
    placedown()
  end
  digup(SLOT_TRASH)
end

-- always from neutral pos
function deposit_trash()
  digback(SLOT_TRASH)
  digforward(SLOT_TRASH)
  digforward(SLOT_TRASH)
  digright(SLOT_TRASH)
  digforward(SLOT_TRASH)
  digdown(SLOT_TRASH)
  digdown(SLOT_TRASH)
  for i = SLOT_TRASH, SLOT_OUTPUT - 1 do
    turtle.select(i)
    turtle.turnRight()
    turtle.drop()
    turtle.turnLeft()
  end
  digup(SLOT_TRASH)
  digup(SLOT_TRASH)
  digback(SLOT_TRASH)
  digforward(SLOT_TRASH)
  digleft(SLOT_TRASH)
  digforward(SLOT_TRASH)
  digforward(SLOT_TRASH)
end

function deposit_output()
  digright(SLOT_TRASH)
  for _ = 1, 5 do
    digforward(SLOT_TRASH)
  end
  digdown(SLOT_TRASH)
  for i = SLOT_OUTPUT, SLOT_OUTPUT + 1 do
    turtle.select(i)
    turtle.dropDown()
  end
  digup(SLOT_TRASH)
  digback(SLOT_TRASH)
  for _ = 1, 5 do
    digforward(SLOT_TRASH)
  end
  turtle.turnRight()
end

function start()
  turtle.select(1)

  -- count loops to make

  local items_left = turtle.getItemCount(SLOT_INPUT) + turtle.getItemCount(SLOT_INPUT + 1)
  local output_left = turtle.getItemCount(SLOT_OUTPUT) + turtle.getItemCount(SLOT_OUTPUT + 1)
  local trash_left = 0
  for i = SLOT_TRASH, SLOT_OUTPUT - 1 do
    trash_left = trash_left + turtle.getItemCount(i)
  end
  local loopcount = math.ceil(items_left / 8)
  -- Now we know how many times we want to put down items, then pick them all up
  -- Notably, this can never be more than 16: I's only checked once.
  -- This means 2 slots will always hold all initial items!

  if items_left == 0 then
    print("Zero items given?")
    return
  end

  print("Running!")
  if trash_left > 0 then
    deposit_trash()
  end

  if output_left > 0 then
    deposit_output()
  end

  -- start the choreography
  for i = 1, loopcount do
     digdown(SLOT_TRASH)
     placeloop()
     placeloop()
     digdown(SLOT_TRASH)

    -- wait for transmutation
    os.sleep(SLEEP_TIME)

    -- dig down twice
    digdown(SLOT_OUTPUT)
    digdown(SLOT_OUTPUT)
    -- go through other blocks
    digloop(SLOT_OUTPUT)
    digloop(SLOT_OUTPUT)
  end

  deposit_output()
  deposit_trash()
end

start()