--
-- Created by IntelliJ IDEA.
-- User: jonas
-- Date: 24.03.2019
-- Time: 16:53
-- To change this template use File | Settings | File Templates.
--
function harvest()
    turtle.dig()
    turtle.forward()
    local x=0
    while turtle.compareUp() do
        turtle.digUp()
        turtle.up()
        x = x +1
    end

    for i=0, x, 1 do
        turtle.down()
    end

    turtle.back()

    return
end

while true do
    if turtle.detect() then
        if turtle.compare() then
            harvest()
        end
    else
        turtle.select(2)
        turtle.place()
        turtle.select(1)
    end

    turtle.turnLeft()
end