dig

tArgs = {...}

length = tArgs[1]
width = tArgs[2]
lastMove = "left"

function digAll()
  turtle.dig()
  turtle.digUp()
  turtle.digDown()
  turtle.forward()
end
for i = 1, width do
  for i = 1, length-1 do
    digAll()
  end
  if lastMove == "right" then
    turtle.turnLeft()
    digAll()
    turtle.turnLeft()
    lastMove = "left"
  else
    turtle.turnRight()
    digAll()
    turtle.turnRight()
    lastMove = "right"
  end
end