Fir Tree Turtle v3

--Written by AaronDM
--Autonomously plants, grows, harvests, and deposits any 2x2 tree
--Run program, follow directions, input how many runs you would like to perform.
--To see where to place chest, run once and note where turtle stops to dump items.

--Basic fuel check function
function checkFuel()
  if turtle.getFuelLevel() < 100 then
    repeat
   	turtle.select(16)
	turtle.refuel(2)
	turtle.select(1)
    until turtle.getFuelLevel() >= 100
  end --if
end --checkFuel()

--Plants 4 Redwood saplings in a 2x2
function plantTree()
	turtle.select(14)
	turtle.forward()
	turtle.place()
	turtle.back()
	turtle.place()
	turtle.turnRight()
	turtle.forward()
	turtle.turnLeft()
	turtle.forward()
	turtle.place()
	turtle.back()
	turtle.place()
	turtle.turnLeft()
	turtle.forward()
	turtle.turnRight()
end --plantTree()

--Applies bonemeal and checks if tree has grown. If not, sleeps and repeats.
function growTree()
	turtle.select(15)
	turtle.place()
	turtle.up()
  if turtle.forward() == true then
    repeat
	turtle.back()
	turtle.down()
	sleep(120)
	turtle.place()
	turtle.up()
    until turtle.forward() == false
end --if
	turtle.down()
end --growTree()

--Cuts down the Redwood. Up the left side, then down the right side.
function cutTree()
	turtle.dig()
	sleep(0.25)
	turtle.forward()
	turtle.dig()
  local height = 0
  if turtle.detectUp() == true then
    repeat
	turtle.dig()
	turtle.digUp()
	turtle.up()
	height = height + 1
    until turtle.detectUp() == false
end --if
	checkFuel()
	turtle.turnRight()
  if turtle.detect() == true then
	turtle.dig()
end --if
	turtle.forward()
	turtle.turnLeft()
  if turtle.detectDown() == true then
    repeat
	turtle.dig()
	turtle.digDown()
	turtle.down()
	height = height - 1
    until height == 0
end --if
	turtle.dig()
end --cutTree()

--Deposits the first 7 slots in a chest behind the turtle.
function dropOff()
	checkFuel()
	turtle.turnLeft()
	turtle.turnLeft()
	turtle.forward()
	turtle.forward()
	turtle.forward()
	turtle.forward()
	turtle.forward()
	turtle.select(1)
	turtle.drop()
	turtle.select(2)
	turtle.drop()
	turtle.select(3)
	turtle.drop()
	turtle.select(4)
	turtle.drop()
	turtle.select(5)
	turtle.drop()
	turtle.select(6)
	turtle.drop()
	turtle.select(7)
	turtle.drop()
	turtle.select(1)
	turtle.turnLeft()
	turtle.turnLeft()
	turtle.forward()
	turtle.forward()
	turtle.forward()
	turtle.forward()
	turtle.turnLeft()
	turtle.forward()
	turtle.turnRight()
	checkFuel()
end --dropOff()

--Attempts to light leftover leaves on fire, then returns to original position.
function burnTree()
  if turtle.detectUp() == false then
    repeat
	turtle.up()
    until turtle.detectUp() == true
end
	turtle.down()
	turtle.select(13)
	turtle.placeUp()
  if turtle.detectDown() == false then
    repeat
	turtle.down()
    until turtle.detectDown() == true
end
	turtle.select(1)
end --burnTree()

function checkInventory()
	return turtle.getItemCount(13) >= 1 and turtle.getItemCount(14) >= 4 and turtle.getItemCount(15) >= 2 and turtle.getItemCount(16) >= 2
end --checkInventory()

--Main Script

term.clear()
print("Please confirm inventory.")
print("Slot 13 = Flint and tender")
print("Slot 14 = Saplings")
print("Slot 15 = Bonemeal")
print("Slot 16 = Fuel")
print("Run how many times?")
times=tonumber(read())
for i=1,times do
    if not checkInventory() then
	term.clear()
	write("Please resupply.")
	shell.run("reboot")
    end
	checkFuel()
	plantTree()
	growTree()
	checkFuel()
	cutTree()
	checkFuel()
	dropOff()
	burnTree()
	sleep(400)
end