moveCount=0

turtle.saveForward = function()
    moveCount = moveCount + 1
    if moveCount % 100 == 0 then
        turtle.refuelNow()
    end
    while not turtle.forward() do
    end
end

turtle.saveDig = function()
    while turtle.detect() do
        turtle.dig()
        sleep(0.45)
    end
end

turtle.saveDigDown = function()
    while turtle.detectDown() do
        turtle.digDown()
        sleep(0.45)
    end
end


turtle.refuelNow = function()
    while turtle.getFuelLevel() < 150 do
        for i=1,16 do
            turtle.select(i)
            turtle.refuel()
        end
    end
end

turtle.cleanInventory = function(mod)

    -- turn around, dig 3 forward and drop all shit here
    turtle.turnRight()
    turtle.turnRight()

    turtle.saveDig()
    turtle.saveForward()
    turtle.saveDig()
    turtle.saveForward()
    turtle.saveDig()

    if mod==0 then
        turtle.saveDig()
        turtle.saveForward()
    end

    turtle.saveDigDown()


        -- drop all but one

        --turtle.dropDown( turtle.getItemCount(i)-1 )

    for j = 6,16 do
        turtle.select(j)

        local dropItem = true
        for i = 1,5 do

            -- compare to  good
            if turtle.compareTo(i) then
                -- drop all trash

                dropItem = false
            end

        end

        if dropItem then
            turtle.dropDown()
        end

    end

    -- go back to original pos

    turtle.turnRight()
    turtle.turnRight()


    if mod==0 then
        turtle.saveDig()
        turtle.saveForward()
    end

    turtle.saveDig()
    turtle.saveForward()
    turtle.saveDig()
    turtle.saveForward()
    turtle.saveDig()
end


for i = 0,20 do

    for b = 0,10 do
        print("Depth: " .. i .. ", Row: " .. b .. ", Fuel: " .. turtle.getFuelLevel())

        turtle.cleanInventory(b%2==0)

        for a = 0,30 do

            turtle.turnLeft()
            turtle.saveDig()
            turtle.turnRight()
            turtle.saveDig()
            turtle.turnRight()
            turtle.saveDig()
            turtle.turnLeft()

            turtle.saveForward()

        end

        if b%2==0 then

            turtle.turnLeft()
            turtle.saveDig()
            turtle.saveForward()
            turtle.saveDig()
            turtle.saveForward()
            turtle.saveDig()
            turtle.saveForward()
            turtle.turnLeft()

        else

            turtle.turnRight()
            turtle.saveDig()
            turtle.saveForward()
            turtle.saveDig()
            turtle.saveForward()
            turtle.saveDig()
            turtle.saveForward()
            turtle.turnRight()

        end



    end


    turtle.saveDigDown()
    turtle.down()

end