tree farm

function drop() -- drops all stuff into inventory
turtle.select(1)
turtle.dropDown()
turtle.select(2)
turtle.dropDown()
turtle.select(3)
turtle.dropDown()
turtle.select(4)
turtle.dropDown()
turtle.select(5)
turtle.dropDown()
turtle.select(6)
turtle.dropDown()
turtle.select(7)
turtle.dropDown()
turtle.select(8)
turtle.dropDown()
turtle.select(9)
turtle.dropDown()
turtle.select(10)
turtle.dropDown()
turtle.select(11)
turtle.dropDown()
turtle.select(12)
turtle.dropDown()
turtle.select(13)
turtle.dropDown()
turtle.select(14)
turtle.dropDown()
turtle.select(15)
turtle.dropDown()
turtle.select(16)
turtle.dropDown()
end


function tree()
local i = 1
--Moves turtle into tree
turtle.dig()
turtle.forward()
--cuts up tree to top then stops
while turtle.digUp()
do
  turtle.dig()
  sleep(0.1)
  turtle.digUp()
  sleep(0.1)
  turtle.turnRight()
  sleep(0.1)
  turtle.dig()
  sleep(0.1)
  turtle.turnLeft()
  sleep(0.1)
  turtle.up()
  i = i + 1
end
--at top of tree moves to last column of wood
turtle.dig()
turtle.forward()
turtle.turnRight()
turtle.dig()
turtle.forward()
for y = 2 , i
do
  if i ~= 1
  then
    turtle.digDown()
    turtle.down()
  end
end
--moves back to position for next tree
turtle.turnRight()
turtle.forward()
turtle.forward()
turtle.turnRight()
turtle.forward()
turtle.turnRight()
drop()
end

-- main program using function

while true
  do
    if turtle.detect()
    then
      sleep(5)
      tree()
  end
end