using TMPro;
using UnityEngine;

public class FrameRateCounter : MonoBehaviour
{
	public enum DisplayMode
	{
		FPS = 0,
		MS = 1
	}

	[SerializeField]
	private TextMeshProUGUI display;

	[SerializeField]
	private DisplayMode displayMode;

	[SerializeField]
	[Range(0.1f, 2f)]
	private float sampleDuration = 1f;

	private int frames;

	private float duration;

	private float bestDuration = float.MaxValue;

	private float worstDuration;

	private void Update()
	{
		float unscaledDeltaTime = Time.unscaledDeltaTime;
		frames++;
		duration += unscaledDeltaTime;
		if (unscaledDeltaTime < bestDuration)
		{
			bestDuration = unscaledDeltaTime;
		}
		if (unscaledDeltaTime > worstDuration)
		{
			worstDuration = unscaledDeltaTime;
		}
		if (duration >= sampleDuration)
		{
			if (displayMode == DisplayMode.FPS)
			{
				display.SetText("FPS\n{0:0}\n{1:0}\n{2:0}", 1f / bestDuration, (float)frames / duration, 1f / worstDuration);
			}
			else
			{
				display.SetText("MS\n{0:1}\n{1:1}\n{2:1}", 1000f * bestDuration, 1000f * duration / (float)frames, 1000f * worstDuration);
			}
			frames = 0;
			duration = 0f;
			bestDuration = float.MaxValue;
			worstDuration = 0f;
		}
	}
}