mine

function displayCord()
  print(x)
  print(y)
  print(getOrientation())

end
currentOrientation = 0
io.write("What is your current x pos? ")
x = io.read()
io.write("What is your current y pos? ")
y = io.read()
io.write("What is your current depth? ")
z = io.read()
io.write("How far down do you wish to tunnel? ")
tunnel = io.read()
function initialiseOrientation()
arrOrientation = {}
arrOrientation[1] = "north"
arrOrientation[2] = "east"
arrOrientation[3] = "south"
arrOrientation[4] = "west"

currentOrientation = startingOrientation()
end

function getOrientation()
  return arrOrientation[currentOrientation]
end

function turn(direction)
  tmpTurn = string.lower(direction)
  if tmpTurn == "right" then
    if  turtle.turnRight() then
      if currentOrientation == 4 then
        currentOrientation = 1
      else
        currentOrientation = currentOrientation + 1
      end
    end
  elseif tmpTurn == "left" then
    if  turtle.turnLeft() then
      if currentOrientation == 1 then
        currentOrientation = 4
      else
        currentOrientation = currentOrientation - 1
      end
    end
  else
    return false
  end
end

function startingOrientation()
  io.write("Which way is the turtle currently facing?")
  facing =string.lower( io.read())
    if facing == "north" then
      return 1
    elseif facing == "east" then
      return 2
    elseif facing == "south" then
      return 3
    elseif facing == "west" then
      return 4
    else
      return 0
    end
end
function refuel()
  if  turtle.getFuelLevel( ) < 10 then
    turtle.select(16)
    turtle.refuel(1)
  end
end

function move(direction)
  refuel()
  tmpDir = string.lower(direction)

  if tmpDir == "forward" then
    if turtle.forward() then
      updateXY("forward")
    end
  elseif tmpDir == "back" then
    if turtle.back() then
      updateXY("back")
    end
  elseif tmpDir == "up" then
    if turtle.up() then
      y = (y) + (1)
    end
  elseif tmpDir == "down" then
    if turtle.down() then
      y = (y) - (1)
    end
  else
    return false
  end

end

function updateXY(direction)
  if getOrientation() == "north" then
    if direction == "forward" then
      y = y - 1
    elseif direction == "back" then
      y = y + 1
    end
  elseif getOrientation() == "east" then
    if direction == "forward" then
      x = x + 1
    elseif direction == "back" then
      x = x - 1
    end
  elseif getOrientation() == "south" then
    if direction == "forward" then
      y = y + 1
    elseif direction == "back" then
      y = y - 1
    end
  elseif getOrientation() == "west" then
    if direction == "forward" then
      x = x - 1
    elseif direction == "back" then
      x = x + 1
    end
  end
end
initialiseOrientation()


print(getOrientation())






displayCord()
for i = 1,30 do
  move("forward")
  displayCord()
  move("forward")
  displayCord()
  turn("right")
  displayCord()
  turn("right")
  displayCord()
  move("back")
  displayCord()
  turn("left")
  displayCord()

end