Turtle_Fell

-- Starting Position
-- Saplings goes in bottom half
-- Goes up 7 maximum

function CheckSapling()
  if turtle.getItemCount(16) < 1 then
    FillSapling()
  end

  -- Check after fill
  if turtle.getItemCount(16) < 1 then
     return false
  end

  return true
end

function FillSapling()
   for n=5,15 do
     if turtle.getItemCount(n) > 1 then
        turtle.select(n)
        turtle.transferTo(16)
     end
   end
end

function CheckGrown()
 turtle.digUp()
 turtle.up()
 for n=1,4 do
  turtle.select(16)
  if not turtle.compare() then
    FellTreeAndReturn()
    turtle.select(1)
    turtle.dropDown()
    turtle.select(16)
    turtle.place()
  end
  turtle.turnRight()
 end
 turtle.down()
end

function FellTreeAndReturn()
 turtle.dig()
 turtle.forward()
 for n=1,5 do
   turtle.digUp()
   turtle.up()
 end

 for n=1,5 do
   turtle.down()
 end

 turtle.turnRight()
 turtle.turnRight()
 turtle.forward()
 turtle.turnRight()
 turtle.turnRight()
end

-- Start of the program

while true do
 term.clear()
 term.setCursorPos(1,1)
 term.write( "Fuel: "..turtle.getFuelLevel())
 CheckGrown()

 -- Do the checks & sleep
 if turtle.getFuelLevel() < 50 or not CheckSapling() then
    os.reboot()
 end

 os.sleep(60)
end