oldexp

local link = "wget -f https://pastebin.com/raw/VFjeDZHF exp.lua"
local robot = require("robot")
local term = require("term")
local computer = require("computer")
local component = require("component")
local sides = require("sides")
local keyboard = require("keyboard")

robot.select(1);
robot.swing();

lastExp = 0

local function printStuff()
  local double expdouble = component.experience.level()
  exp = string.format("%.4f",expdouble);
  local double diff = expdouble - lastExp;
  lastExp = expdouble;
  diffExp = string.format("%.8f",diff);
  term.clear();
  print("I have " .. exp .. " Exp.\nThats " .. diffExp .. " more than last time.");
  robot.turnRight();
  component.sign.setValue("I have\n" .. exp .. " Exp.\n(+" .. diffExp .. ")");
  robot.turnLeft();
end

local function errorStuff(err)
  print(err);
end

local function updateStuff()
  error = xpcall(printStuff, errorStuff);
  while (error == false) do
    os.sleep(1);
    error = xpcall(printStuff, errorStuff);
  end
end

local function interruptStuff()
  if keyboard.isKeyDown(keyboard.keys.c) and keyboard.isControlDown() then
    os.exit();
  end
end

local function doStuff()

  local counter = 0;
  local maxCounter = 100;

  while (counter < maxCounter) do
    counter = counter + 1;
    robot.place();
    interruptStuff();
    robot.swing();
  end
end

while true do
  updateStuff()
  doStuff()
end