public class Lag implements Runnable {
	public static int TICK_COUNT= 0;
	public static long[] TICKS= new long[600];
	public static long LAST_TICK= 0L;

	public static double getTPS()
	{
		return getTPS(100);
	}

	public static double getTPS(int ticks)
	{
		if (TICK_COUNT< ticks) {
			return 20.0D;
		}
		int target = (TICK_COUNT- 1 - ticks) % TICKS.length;
		long elapsed = System.currentTimeMillis() - TICKS[target];

		return ticks / (elapsed / 1000.0D);
	}

	public static long getElapsed(int tickID)
	{
		if (TICK_COUNT- tickID >= TICKS.length)
		{
		}

		long time = TICKS[(tickID % TICKS.length)];
		return System.currentTimeMillis() - time;
	}

	public void run()
	{
		TICKS[(TICK_COUNT% TICKS.length)] = System.currentTimeMillis();

		TICK_COUNT+= 1;
	}
}