App

-- https://turtleappstore.com/u/Skeemer/a/branches

-- branches

os.loadAPI('Module1')

local fuel = turtle.getFuelLevel()

local useless = {'minecraft:granite','minecraft:cobblestone','minecraft:dirt','minecraft:diorite','minecraft:andesite'} --List of itemsready to throw away

--checks for fuel and torches
if fuel < 301 then
    error('Need more fuel')
end

if Module1.selectItem('minecraft:torch') then
  if turtle.getItemCount() < 27 then
    error('Need 26 torches at least')
  end
else
  error('Need torches')
end

--throws away useless ore
function cleanInventory()
  for index,value in ipairs(useless) do
    if Module1.selectItem(value) then
      turtle.dropDown()
    end
  end
end
      
--digs all gravel or sand forward
function digUntilClear()
  while turtle.detect() do
    if not turtle.dig() then
      return false
    end
  end
  return true
end

--advance function
function advance()
  digUntilClear()
  turtle.forward()
  turtle.digUp()
  turtle.digDown()
end

--2 sections
for k = 1,2 do

--digs 5 blocks ahead of 4x4 size
local success, data = turtle.inspectDown()

if success then
  turtle.up()
end

for i = 1,5 do
  advance()
  if i % 2 == 0 then
    turtle.turnLeft()
  else
    turtle.turnRight()
  end
  advance()
  advance()
  if i % 2 == 0 then
    turtle.turnRight()
  else
    turtle.turnLeft()
  end
end

--places torches
Module1.selectItem('minecraft:torch')
turtle.turnLeft()
turtle.forward()
turtle.place() -- 1stTorch
turtle.turnLeft()
turtle.forward()
turtle.turnLeft()
turtle.place() -- 2ndTorch
turtle.turnRight()
turtle.forward()
turtle.forward()
turtle.turnRight()
turtle.place() -- 3rdTorch
turtle.turnLeft()
turtle.forward()
turtle.turnLeft()
turtle.place() -- 4thTorch
turtle.turnRight()
turtle.turnRight()
turtle.forward()

--digs branches
for i = 1,107 do

  --change arc
  if i == 54 then
    turtle.forward()
    turtle.turnLeft()
    turtle.forward()
    turtle.turnRight()
    turtle.forward()
  end

  if i == 26 or i == 83 then
    turtle.turnRight()
  end

  -- Leaves 2 blocks digged to connect next branch
  if i == 29 or i == 80 then
    if i == 80 then
      turtle.turnLeft()
    end
    advance()
    advance()
    turtle.turnRight()
    turtle.turnRight()
    turtle.forward()
    turtle.forward()
    if i == 29 then
      turtle.turnLeft()
    end
  end
  advance()
  if i == 11 or i == 23 or i == 30 or i == 42 then
    Module1.selectItem('minecraft:torch')
    turtle.placeDown()
  elseif i == 65 or i == 77 or i == 84 or i == 96 then
    Module1.selectItem('minecraft:torch')
    turtle.placeDown()
  end
end

--prepares for the next section
cleanInventory()
turtle.forward()
turtle.turnRight()
turtle.down()
turtle.forward()
turtle.forward()
turtle.forward()
turtle.up()
advance()
turtle.turnLeft()
advance()
advance()
turtle.turnRight()

end --finishes the k sections

local fuel2 = turtle.getFuelLevel()
local torches2 = turtle.getItemCount()

if fuel2 > 300 and torches2 > 24 then
  print('Can do another run')
end

if fuel2 < 301 then
  print('Need more fuel for the next run')
end

if torches2 < 25 then
  print('Need more torches for the next run')
end