Tree cutter v1

turtle.select(16)
local step = 0
local selectedSlot = 0
local errorPosStart = 0
local time = 0

while true do

    if turtle.getFuelLevel() < 1 then
        selectedSlot = turtle.getSelectedSlot()
        turtle.select(15)
        turtle.refuel()
        turtle.select(selectedSlot)
    end


    if step == 0 and turtle.compareDown() then
        print("Je suis sur le block start !")

        while not turtle.compare() do
            turtle.turnLeft()
        end

        turtle.turnRight()
        turtle.turnRight()
        turtle.up()
        turtle.forward()
        turtle.forward()
        step = 1

    end

    if step == 0 and not turtle.compareDown() then
        if errorPosStart < 5 then
            print("Je ne suis pas sur le block start !")
            errorPosStart = errorPosStart + 1
        else
            print("Trop complex pour moi je me shutdown")
            step = 3
        end
    end



    if step == 1 then

        turtle.select(14)

        if turtle.compare() then
            print("Il y a un sapling j'attend")
            step = 2
        else
            print("Il y a pas de sapling, mais y a t'il un arbre ?")
            turtle.select(13)
            if turtle.compare() then
                print("Il y a un arbre ! j'attend")
                step = 2
            else
                print("Il y a ni sapling, ni arbre, je plante !")
                turtle.select(14)
                turtle.place()
            end
        end
    end

    if step == 2 then

        turtle.select(13)
        sleep(time)
        if turtle.compare() then
            turtle.dig()
            turtle.digUp()
            turtle.up()
            time = 0
        else
            time = 5
            sleep(time)
            turtle.select(14)
            if turtle.compare() then
                sleep(time)
                print("J'attend...")
            else
                step = 3
                time = 0
            end
        end
    end

    if step == 3 then
        print("J'ai fini de couper l'arbre")
        while turtle.down() do
            turtle.down()
        end
        turtle.turnLeft()
        turtle.turnLeft()
        turtle.forward()
        turtle.suck()
        turtle.suck()
        turtle.suck()
        turtle.suck()
        turtle.suck()
        turtle.forward()
        turtle.turnLeft()
        turtle.turnLeft()
        sleep(5)
        turtle.suck()
        turtle.suck()
        turtle.suck()
        turtle.suck()
        turtle.suck()
        turtle.turnLeft()
        sleep(1)

        turtle.select(13)
        while turtle.getItemCount() > 1 do
            turtle.drop(1)
        end
        turtle.turnLeft()
        turtle.turnLeft()
        turtle.select(14)
        sleep(1)

        while turtle.getItemCount() > 2 do
            turtle.drop(1)
        end

        local i = 1

        while i <= 12 do
            turtle.select(i)
            turtle.drop()
            i = i + 1
        end


        turtle.select(16)
        step = 0

    end
end