Turtle Control

mineshaftLength = 12
cellLength = 1
msg = 0
print("Computercraft Turtle Control Client")
print("-----------------------------------")
print("   W     E  T Y")
print(" A S D   Q  G H")
print(" U I O P    B N")
while true do
  local event, msg = os.pullEvent("char")
  for a = 1, 9, 1 do
    if tonumber(msg) == a then
      cellLength = a
      write(cellLength)
    end
  end
  if msg == "w" then
    turtle.forward()
  end
  if msg == "a" then
    turtle.turnLeft()
  end
  if msg == "s" then
    turtle.back()
  end
  if msg == "d" then
    turtle.turnRight()
  end
  if msg == "e" then
    turtle.up()
  end
  if msg == "q" then
    turtle.down()
  end

  if msg == "t" then
    turtle.attackUp()
  end
  if msg == "g" then
    turtle.attack()
  end
  if msg == "b" then
    turtle.attackDown()
  end

  if msg == "y" then
    turtle.digUp()
  end
  if msg == "h" then
    turtle.dig()
  end
  if msg == "n" then
    turtle.digDown()
  end

  if msg == "i" then
    for a = 1, mineshaftLength, 1 do
      for b = 1, cellLength, 1 do
        turtle.dig()
        turtle.forward()
        turtle.digUp()
        turtle.digDown()
        turtle.turnLeft()
        turtle.dig()
        turtle.forward()
        turtle.digUp()
        turtle.digDown()
        turtle.turnLeft()
        turtle.turnLeft()
        turtle.forward()
        turtle.dig()
        turtle.forward()
        turtle.digUp()
        turtle.digDown()
        turtle.turnLeft()
        turtle.turnLeft()
        turtle.forward()
        turtle.turnRight()
      end
      turtle.digDown()
      turtle.down()
    end
  end
  if msg == "o" then
    for a = 1, mineshaftLength, 1 do
      for b = 1, cellLength, 1 do
        turtle.dig()
        turtle.forward()
        turtle.digUp()
        turtle.digDown()
        turtle.turnLeft()
        turtle.dig()
        turtle.forward()
        turtle.digUp()
        turtle.digDown()
        turtle.turnLeft()
        turtle.turnLeft()
        turtle.forward()
        turtle.dig()
        turtle.forward()
        turtle.digUp()
        turtle.digDown()
        turtle.turnLeft()
        turtle.turnLeft()
        turtle.forward()
        turtle.turnRight()
      end
    end
  end
  if msg == "p" then
    for a = 1, mineshaftLength, 1 do
      for b = 1, cellLength, 1 do
        turtle.dig()
        turtle.forward()
        turtle.digUp()
        turtle.digDown()
        turtle.turnLeft()
        turtle.dig()
        turtle.forward()
        turtle.digUp()
        turtle.digDown()
        turtle.turnLeft()
        turtle.turnLeft()
        turtle.forward()
        turtle.dig()
        turtle.forward()
        turtle.digUp()
        turtle.digDown()
        turtle.turnLeft()
        turtle.turnLeft()
        turtle.forward()
        turtle.turnRight()
      end
      turtle.digUp()
      turtle.up()
    end
  end
  if msg == "u" then
    turtle.up()
    turtle.placeDown()
    turtle.forward()
    turtle.placeDown()
    turtle.forward()
    turtle.placeDown()
    turtle.forward()
    turtle.placeDown()
    turtle.forward()
    turtle.placeDown()
    turtle.turnRight()
    turtle.forward()
    turtle.placeDown()
    turtle.forward()
    turtle.placeDown()
    turtle.turnRight()
    turtle.forward()
    turtle.forward()
    turtle.placeDown()
    turtle.turnRight()
    turtle.forward()
    turtle.placeDown()
    turtle.turnRight()
    turtle.turnRight()
    turtle.forward()
    turtle.forward()
    turtle.forward()
    turtle.turnLeft()
    turtle.forward()
    turtle.forward()
    turtle.placeDown()
    turtle.turnRight()
    turtle.turnRight()
    turtle.forward()
    turtle.placeDown()
    turtle.forward()
    turtle.placeDown()
    turtle.forward()
    turtle.placeDown()
    turtle.forward()
    turtle.placeDown()
    turtle.turnLeft()
    turtle.forward()
    turtle.placeDown()
    turtle.forward()
    turtle.placeDown()
    turtle.turnLeft()
    turtle.forward()
    turtle.placeDown()
    turtle.forward()
    turtle.placeDown()
    turtle.forward()
    turtle.placeDown()
    turtle.forward()
    turtle.placeDown()
    turtle.turnRight()
    turtle.forward()
    turtle.down()
  end
end