-- Created by Jef Roosens
--
-- This script digs a 1x2 tunnel of a given length

local logger = require("jlib.log").init_logger(3)
local fuel = require("jlib.fuel")
fuel.logger = logger
local move = require("jlib.move").move
local input = require("jlib.input")


local function main(args)
    -- Get tunnel length
    local length = tonumber(args[1]) or input.read_int("Tunnel length: ")

    -- Check if fuel is sufficient
    if not fuel.check(length) then
        return logger:log(1, "Insufficient fuel.")
    end

    -- Do the digging
    move('f', length, { turtle.digDown, turtle.digUp })
end


main({...})