Spruce2x2 Enhanced

require "GenUtil"

function Continue(h)
  if (h = -1) and turtle.detectUp() then
    return true
  if h > 0 then
    return true
  return false
end

function CutUp(h)
  local count = 0
  while Continue(h) do
    turtle.digUp()
    turtle.Up()
    count = count +1
    h = h-1
  end
  return count
end

function CutDown(h)
  h = h-1
  while h > 0 do
    turtle.digDown()
    turtle.down()
    h = h-1
  end
  turtle.digDown()
end

function CutSpruce()
  turtle.dig()
  turtle.forward()

  local h = CutUp(-1)
  turtle.dig()
  turtle.forward()
  CutDown(h)
  turtle.turnRight()
  turtle.dig()
  turtle.forward()
  turtle.digDown()
  CutUp(h)
  turtle.turnRight()
  turtle.dig()
  turtle.forward()
  CutDown(h)
end

function Replant()
  turtle.turnRight()
  turtle.turnRight()
  turtle.select(2)
  turtle.placeDown()
  turtle.forward()
  turtle.placeDown()
  turtle.turnLeft()
  turtle.forward()
  turtle.placeDown()
  turtle.turnLeft()
  turtle.forward()
  turtle.down()
  turtle.forward()
  EmptyForwardReport(3)
  turtle.turnRight()
  turtle.turnRight()
  turtle.place()
  turtle.select(1)
end

while true do
  local FoundBlock, BlockType = turtle.inspect()
  if FoundBlock then
    if BlockType['name'] == 'minecraft:spruce_log' then
      ReFuel(true)
      CutSpruce()
      Replant()
    end
  end
end