bot_pure.lua

turtle.refuel()
print("Refuled!")

function check_and_dig(block_name)
    local s
    local data

    while true do
        s, data = turtle.inspect()
        if s and data["name"] == block_name then
            turtle.dig()
            turtle.forward()
            return
        end
    end
end

bn = "botania:livingrock"

check_and_dig(bn)

for j=1,3 do
    for i=1,2 do
        check_and_dig(bn)
    end
    turtle.turnLeft()
end

check_and_dig(bn)
turtle.forward()
turtle.turnLeft()
turtle.back()

print("Done")