Tree farm

function drop()
 for i = 1,14 do
  if turtle.getItemCount(i) > 0 then
   turtle.select(i)
   turtle.dropDown()
  end
 end
end

function chop()

if turtle.detect() then
 turtle.dig()
 turtle.forward()
end

while turtle.detectUp() do
 turtle.digUp()
 turtle.up()
end

while not turtle.detectDown() do
 turtle.down()
 if turtle.detectDown() then
  break
 end
end

turtle.back()
end

function plant()

turtle.select(15) -- sapling
turtle.place()
sleep(2)
turtle.select(16) -- bone meal
turtle.place()
turtle.select(1)
end

function sapling()
 if turtle.getItemCount(15) < 1 then
  turtle.select(15)
  turtle.turnRight()
  turtle.suck()
  turtle.turnLeft()
  turtle.select(1)
 end
end

function bonemeal()
 if turtle.getItemCount(16) < 1 then
  turtle.select(16)
  turtle.turnLeft()
  turtle.suck()
  turtle.turnRight()
  turtle.select(1)
 end
end

function check()
bonemeal()
sapling()
end

while true do
term.clear()
term.setCursorPos(1,1)
print("enter Command!")
input = read()

if input == "plant" then
check()
plant()
end

if input == "chop" then
chop()
end

if input == "auto" then
 while true do
  check()
  plant()
  sleep(2)
  chop()
  drop()
 end
end

end