SDChopper 1.0

-- uses Robust Turtle API: pastebin get 0TnEBf2P t
os.loadAPI("t")
-- local args = {...}
local versionNumber = "1.0"
local programName = "StarDustChopper"
local programNameShort = "SDChopper"
local startInventory = 3
local treeDistance = 1
local refuelAmount = 80
local distanceFromContainer = 0
local saplingName = nil

--if #args ~= 1 then
--  print ("Usage: "..programNameShort.." (Amount of Simultaneous Trees)")
--  return
--else
--  treeAmount = tonumber(args[1])
--  if treeAmount < 1 then
--      print("Amount Of trees must be positive")
--      return
--  end

function Refuel(amountOfRequiredFuel)
    turtle.select(1)
    if (turtle.getFuelLevel() == "unlimited") then
        -- that's pretty neat dude.
        return
    end
    if (turtle.getFuelLevel() < amountOfRequiredFuel) then
        while (true) do
            if turtle.refuel(1) then
                if (turtle.getFuelLevel() > amountOfRequiredFuel) then
                    break
                end
            else
                print("Turtle could not refuel. Please check why.")
                error()
            end
        end
    end
end

function CheckSaplings()
    turtle.select(2)
    if turtle.getItemDetail() then
        if saplingName ~= nil then
            if turtle.getItemDetail().name == saplingName then
                return true
            else
                print("Foreign object in Sapling Area. Looking for others.")
                    turtle.transferTo(16)
                for i=1,16 do
                    turtle.select(i)
                    if turtle.getItemDetail() ~= nil then
                        if turtle.getItemDetail().name == saplingName then
                            turtle.transferTo(2)
                            print("Found others. Continuing.")
                            return true
                        end
                    end
                end
                print("Could not find more saplings.")
                CheckSaplings()
            end
        else
            saplingName = turtle.getItemDetail().name
        end
    else
        print("Please insert saplings. Retrying in 5 Seconds.")
        sleep(5)
        CheckSaplings()
    end
end

function CheckIfGrown()
    turtle.select(2)
    if not turtle.detect() then
        CheckSaplings()
        t.place(2)
        return false
    elseif turtle.compare() then
        return false
    else
        return true
    end
end

function CutTree()
    turtle.select(2)
    t.dig()
    t.forward()
    t.digUp()
    t.up()
    t.digUp()
    t.up()
    local upCount = 2
    while turtle.detectUp() do
        t.digUp()
        t.up()
        upCount = upCount + 1
        t.dig()
        t.right()
        t.dig()
        t.right()
        t.dig()
        t.right()
        t.dig()
        t.right()
    end
    t.down(upCount)
    t.back()
end

function EmptyInventory()
    local itemsDepositedCount = 0
    for i=startInventory,16 do
        turtle.select(i)
        itemsDepositedCount = itemsDepositedCount + turtle.getItemCount()
        if turtle.getItemCount() == 0 then
            --twiddle your thumbs
        elseif not turtle.drop() then
            print("Container full. Please empty it.")
            error()
        end
    end
    print("Deposited "..itemsDepositedCount.." Items.")
end

function CheckInventory()
    turtle.select(6)
    if turtle.getItemCount() > 0 then
        t.turnAround()
        t.forward(distanceFromContainer)
        EmptyInventory()
        t.turnAround()
        t.forward(distanceFromContainer)
    end
end

function Farm()
    if CheckSaplings() then
        if CheckIfGrown() then
            CutTree()
            if CheckSaplings() then
                CheckIfGrown()
            end
        end
    end
end

    -- INITIAL SETUP FASE
term.clear()
term.setCursorPos(1,1)
print("Welcome to"..programName.."Version "..versionNumber.." !")
print("(Coded by MrHG using RobustTurtleAPI)")
print("")
sleep(1)
print("Insert Fuel in slot 1")
print("Insert Sapling in slot 2")
Refuel(80)
CheckSaplings()
t.turnAround()
for i=1,5 do
    if turtle.detect() then
        print("Block found. Assuming it is Container.")
        t.turnAround()
        t.forward(distanceFromContainer)
        break
    else
        t.forward()
        distanceFromContainer = distanceFromContainer + 1
    end
    if i == 5 then
        print("No container within reach.")
        print("Would you like to proceed without one? (y/n)")
        if read() == "y" then
            print("Understood. Proceeding without container.")
            t.turnAround()
            t.forward(distanceFromContainer)
            distanceFromContainer = 0
        else
            print("Please install container within reach before continuing.")
            t.turnAround()
            t.forward(distanceFromContainer)
            error()
        end
    end
end

function moveStraight()
    t.strafeRight(treeDistance)
    Refuel(refuelAmount)
    Farm()
end

function moveCorner()
    t.strafeRight(treeDistance)
    t.forward(2)
    t.left()
    Refuel(refuelAmount)
    Farm()
end
    -- Main Block
term.clear()
term.setCursorPos(1,1)
print("Commence Chopping!")
print("")
while true do
-- AT START
    CheckInventory()
    Refuel(refuelAmount)
    Farm()
    -- OOO
    -- O O
    -- OXO
    moveStraight()
    -- OOO
    -- O O
    -- OOX
    moveCorner()
    -- OOO
    -- O X
    -- OOO
    moveStraight()
    -- OOX
    -- O O
    -- OOO
    moveCorner()
    -- OXO
    -- O O
    -- OOO
    moveStraight()
    -- XOO
    -- O O
    -- OOO
    moveCorner()
    -- OOO
    -- X O
    -- OOO
    moveStraight()
    -- OOO
    -- O O
    -- XOO
    moveCorner()
    -- OOO
    -- O O
    -- OXO
    if CheckSaplings() then
        local timesChecked = 0
        while not CheckIfGrown() do
            cursorPosx,cursorPosy = term.getCursorPos()
            if cursorPosy > 1 then
                term.setCursorPos(cursorPosx, 1)
            end
            term.setCursorPos(cursorPosx,cursorPosy-1)
            term.clearLine()
            print("Turtle has spun around "..timesChecked.." Times Since last harvest.")
            t.turnAround()
            t.turnAround()
            sleep(10)
            timesChecked = timesChecked + 1
            if timesChecked > 30 then
                print("This is taking a while.. Attempting Detection Override.")
                break
            end
        end
        CutTree()
    end
end