OC Basic Tunnel

local robot = require("robot")
local args = {...}


function left()
  robot.turnLeft()
end

function right()
  robot.turnRight()
end

function forward()
  robot.forward()
end

function up()
  robot.up()
end

function down()
  robot.down()
end

function dig()
  robot.swing()
end

function digUp()
  robot.swingUp()
end

function refuel()

end

local reptimes = tonumber(args[1])
function loop()
  digUp()
  left()
  dig()
  up()
  dig()
  right()
  right()
  dig()
  down()
  dig()
  left()
end

while (reptimes > 1) do
  loop()
  dig()
  forward()
  os.sleep(0.1)
  reptimes = reptimes-1
end
loop()