sm

local args={...}

--Gets the values provided as args at start of program and asignes them to lenght, rows and height
local lenght = tonumber(args[1])
local rows = tonumber(args[2])
local height = tonumber(args[3])

--Sets maximun values for lenght, number of rows and height of tunnel
local lenghtl=128
local rowsl=16
local heightl=15

--Checks that values have been provided
if lenght==nil or rows==nil or height==nil then
  print("Lenght, number and height must be provided")
  print("Please use as:\nstripmine [lenght] [rows] [height]")

--Checks so that the provided values don't exceed the maximun limit
elseif lenght>lenghtl and rows>rowsl and height>7 then
  print("Value exceeding limit was detected. The limits are -\n")
  print("Lenght: "..lenghtl.."\nRows: "..rowsl.."\nHeight: "..heightl)
else
  --Loop to put turtle at correct initial vertical position
  for i=0, height do
    if turtle.detectUp() then
      turtle.digUp()
    end
    turtle.up()
  end

end