bTunnel

local tArgs = { ... }
count = tArgs[1]

function betterDig()
  while turtle.detect() do
    turtle.dig()
    sleep(.5)
  end
end

function betterDigUp()
  while turtle.detectUp() do
    turtle.digUp()
    sleep(.5)
  end
end

function digLeftRight()
  turtle.turnLeft()
  betterDig()
  turtle.turnRight()
  turtle.turnRight()
  betterDig()
  turtle.turnLeft()
end

function digForward()
  betterDig()
  turtle.forward()
end

function digUp()
  betterDigUp()
  turtle.up()
end

function returnHome()
  turtle.turnLeft()
  turtle.turnLeft()
  for i = 1,count do
    turtle.forward()
  end
end

function placeTorch()
  turtle.turnRight()
  turtle.select(16)
  turtle.place()
  turtle.select(1)
  turtle.turnLeft()
end

for i = 1,count do
  digForward()
  digUp()
  digUp()
  digLeftRight()
  turtle.down()
  digLeftRight()
  turtle.down()
  digLeftRight()
  if i%6 == 0 then
    placeTorch()
  end
end

returnHome()