-- get arg with love2d

function love.load(arg)

  -- Check command line options
  ssmode = ""
  for k, v in pairs(arg) do
    lv = string.lower(v)
    if lv == "/s" then
      ssmode = "fullscreen"
    elseif lv == "/c" then
      ssmode = "config"
    elseif lv == "/p" then
      ssmode = "preview"
    elseif lv == "/a" then
      ssmode = "passwordlock"
    end
  end

  if ssmode == "" then
    ssmode = "none"
  end

  min_dt = 1 / 60
  next_time = love.timer.getTime()
end

function love.update(dt)
  next_time = next_time + min_dt
  if dt > 0.75 then
    return
  end
end

function love.draw()
  love.graphics.setCanvas()
  love.graphics.clear(0, 0, 0.2, 1.0)

  love.graphics.setColor(1, 1, 1, 1)
  love.graphics.print("FPS: " .. tostring(love.timer.getFPS()), 10, 10)
  
  y = 32
  for k, v in pairs(arg) do
    love.graphics.print(string.format("arg[%d] : %s", k, v), 10, y)
    y = y + 18
  end
  
  y = y + 18
  love.graphics.print("Mode : " .. ssmode, 10, y)


  if love.system.getOS() == "Windows" then
    -- wait
    local cur_time = love.timer.getTime()
    if next_time <= cur_time then
      next_time = cur_time
    else
      love.timer.sleep(next_time - cur_time)
    end
  end
end

function love.keypressed(key, isrepeat)
  if key == "escape" then
    -- ESC to exit
    love.event.quit()
  end
end