LÖVE

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maxfps = 60

function love.run()

    if love.math then
        love.math.setRandomSeed(os.time())
        for i=1,3 do love.math.random() end
    end

    if love.event then
        love.event.pump()
    end

    if love.load then love.load(arg) end

    -- We don't want the first frame's dt to include time taken by love.load.
    if love.timer then love.timer.step() end

    local dt = 0

    -- Main loop time.
    while true do
        -- Process events.
        local frametimestart = love.timer.getTime()
        if love.event then
            love.event.pump()
            for e,a,b,c,d in love.event.poll() do
                if e == "quit" then
                    if not love.quit or not love.quit() then
                        if love.audio then
                            love.audio.stop()
                        end
                        return
                    end
                end
                love.handlers[e](a,b,c,d)
            end
        end

        -- Update dt, as we'll be passing it to update
        if love.timer then
            love.timer.step()
            dt = love.timer.getDelta()
        end

        -- Call update and draw
        if love.update then love.update(dt) end -- will pass 0 if love.timer is disabled

        if love.window and love.graphics and love.window.isCreated() then
            love.graphics.clear()
            love.graphics.origin()
            if love.draw then love.draw() end
            love.graphics.present()
        end

        local frametimeend = love.timer.getTime()
	    local framedelta = frametimeend - frametimestart
	      
	    if maxfps and maxfps > 0 then -- 0 is unlimited
	    	local max_dt = 1/maxfps
	        local sleeptime = max_dt - framedelta
	         
	        if sleeptime >= 0.001 then -- love will truncate anything less than 1ms down to 0 internally
	            love.timer.sleep(sleeptime)
	        end
	    else
	      if love.timer then love.timer.sleep(0.001) end
	    end
    end

end