Farm

-- globals
local slot = 1
local oak = false

function firstrow()
 turtle.forward()
 turtle.forward()
 turtle.forward()
 turtle.turnLeft()
end

function nextrow()
 turtle.turnRight()
 turtle.forward()
 turtle.forward()
 turtle.forward()
 turtle.turnLeft()
end

function tree()

 --start from previous tree
 turtle.forward()
 turtle.forward()
 -- moved to tree
 turtle.dig()
 turtle.forward()
 --Start digging tree
 for i=1,6 do
  turtle.digUp()
  turtle.up()
 end
 --Going down to ground
 for i=1,6 do
  turtle.down()
 end
end

function cycleSlots()
      slot = slot + 1 -- selects next slot
      if slot <=  16 then -- makes sure its not more then the slots in the turtle
        turtle.select(slot)
        oak = false
      end
end

function findSapling()
 local item = turtle.getItemDetail()
  if item then

    local count = item.count
    local name = item.name
    local damage = item.damage

     if name == "minecraft:sapling" and damage == 0 then
      turtle.place() -- placing sapling
      print("yes!")
      oak = true
      else

     print(slot,"is a nope ", count, " ", name, " ", damage) -- debugging

     cycleSlots()

     if slot == 16 and oak == false then
        saplings() -- goes to find more saplings from storage if found nothing in the 16 slots
     end

    end
  else
   turtle.select(slot)
   slot = slot+1
   print("changing slot to:",slot-1)
  end
end

function plant()
  turtle.back()

  while oak == false do

 end
 turtle.back()
 turtle.back()

end

function saplings()
-- add path finding to chest for more saplings or home here
print("No saplings in turtle :( ")
end

function row()
 local trees = 10
  for i=1,trees do
   tree()
  end
  for i=1,trees-1 do
   plant()
  end
end
-- start of program

print("fuel level: ", turtle.getFuelLevel())

--first row
--firstrow()
--turtle.forward()

-- row 1
--row()
--nextrow()

-- row 2
--row()
--nextrow()

-- row 3
--row()

-- to home

-- reset slot to 1
turtle.select(1)