--Turtle Lumberjack--
 
shell.run(clear)
 
print("Before beginning make sure:\n ")
 
print("Saplings are in slot 13.")
print("Bonemeal for slot 14.")
print("Dirt for slot 15.")
print("And fuel for slot 16.\n")
 
print("What type of tree are you cutting?\n")
local treeType = io.read()
local sapling, bonemeal, dirt, fuel = 13, 14, 15, 16
 
local function digUp()
  amount = amount - 1
  while turtle.detectUp() do
    turtle.digUp()
    turtle.up()
    if turtle.detectUp() == false and treeType == "redwood" then
      if turtle.detect() then
        turtle.dig()
        turtle.forward()
      else
        turtle.forward()
      end
    else
    end
  end
end
 
local function digDown()
  turtle.select(dirt)
  local amount = amount - 1
  while turtle.detectDown do
    turtle.digDown()
    turtle.down()
    if turtle.compareDown() == true and treeType == "redwood" then
      turtle.forward()
      turtle.turnRight()
      turtle.forward()
      turtle.turnRight()
    else
    end
  end
end
 
local function plant()
  for i = 1, 1 do
    if treeType == "redwood" then
      turtle.select(sapling)
      turtle.forward(2)
      turtle.turnRight(2)
      turtle.place()
      turtle.back()
      turtle.place()
      turtle.turnLeft()
      turtle.forward()
      turtle.turnRight()
      turtle.forward()
      turtle.place()
      turtle.back()
      turtle.place()
      turtle.select(bonemeal)
      turtle.place()
    else
      turtle.select(sapling)
      turtle.place()
      turtle.select(bonemeal)
      turtle.place()
    end
  end
end
 
local function cycle()
  local amount = 4
  turtle.select(13)
  if turtle.compare() ~= true then
    plant()
  else
  end
  while amount ~= 0 do
    turtle.dig()
    turtle.forward()
    digUp()
    digDown()
  end
end
 
cycle()