--placing torch with 5 spacec between by default
--first argument is length of the tunel
--second is optional, empty spaces between torches

local args = {...}

if args[1] == nil then
  print("Too little arguments.\n")
  return
end

local distance = 0

if args[2] == nil then
  print("Default distance of 5.\n")
  distance = 6
else
  print("Distance of "..args[2].." set.\n")
  distance = args[2] + 1
end

local length = args[1]

turtle.select(1)

for i = 1, length do


    print("\t"..(i - 1).."%"..distance.."="..(i-1)%distance.."\n")
  if ((i - 1)%distance) == 0 then
    print("\t\tPlacing torch.\n")
    turtle.placeUp()
  end
  turtle.forward()
end