run.lua

function love.run()
  love.load(love.arg.parseGameArguments(arg), arg)
 
  -- We don't want the first frame's dt to include time taken by love.load.
  love.timer.step()
 
  local dt = 0

  local dt = 0

  local tr = 1/60
  local fr = 1/60

  local ua = 0
  local da = 0
 
  -- Main loop time.
  return function()
    -- Process events.
    love.event.pump()
    for name, a,b,c,d,e,f in love.event.poll() do
      if name == "quit" then
        if not love.quit or not love.quit() then
          return a or 0
        end
      end
      love.handlers[name](a,b,c,d,e,f)
    end
 
    -- Update dt, as we'll be passing it to update
    dt = love.timer.step()
    ua = ua + dt
    da = da + dt
 
    -- Call update and draw
    if ua > tr then
      love.update(tr)
      ua = ua % tr
    end

    if da > fr then
      love.graphics.origin()
      love.graphics.clear(love.graphics.getBackgroundColor())
      love.draw()
      love.graphics.present()
      da = da % fr
    end
 
    love.timer.sleep(0.001)
  end
end