treeCutting

--Digs block in front, then block above, then moves up. Moves back down when finished
local function column()
  while turtle.detectUp() do
    turtle.dig()
    turtle.digUp()
    turtle.up()
  end
  turtle.dig()
  while not turtle.detectDown() do
    turtle.down()
  end
end

--Picks up items on ground
local function suck()
  turtle.suck()
end

--Cuts the tree down, column by column
local function fell()
  turtle.dig()
  turtle.forward()
  column()
  turtle.turnRight()
  turtle.dig()
  turtle.forward()
  turtle.turnLeft()
  column()
end

--Replants the tee and fills the chest with it's inventory
local function replant()
  turtle.select(15)
  suck()
  turtle.place()
  turtle.turnLeft()
  suck()
  turtle.forward()
  suck()
  turtle.turnRight()
  suck()
  turtle.place()
  turtle.turnRight()
  suck()
  turtle.place()
  turtle.turnRight()
  suck()
  turtle.forward()
  for slot=2,7 do
    turtle.select(slot)
    turtle.drop()
  end
  turtle.turnLeft()
  turtle.turnLeft()
  turtle.select(15)
  turtle.place()
  turtle.select(1)
  while not turtle.compare() do
    turtle.select(16)
    turtle.place()
    turtle.select(1)
  end
end

--Executes until told to stop
while true do
  fell()
  replant()
end