using System;
using System.Diagnostics;
using UnityEngine;

public class HuiPizda : MonoBehaviour {

    Bench b1 = new Bench();
    Bench b2 = new Bench();
    Bench b3 = new Bench();

    Action<int> huiAction;

    float tick = 1;
    public int start = 5000000;
    public int upd = 10000;

    void Start(){
        b1.sw.Start();
        for (int i = 0; i < start; i++) {
            SendMessage("Hui", i);
        }
        b1.Tick();
        UnityEngine.Debug.LogFormat("Message:\t{0}ms", b1.Avg);

        b2.sw.Start();
        for (int i = 0; i < start; i++) {
            Hui(i);
        }
        b2.Tick();
        UnityEngine.Debug.LogFormat("Call:\t{0}ms\n", b2.Avg);

        huiAction += Hui;
        b3.sw.Start();
        for (int i = 0; i < start; i++) {
            huiAction(i);
        }
        b3.Tick();
        UnityEngine.Debug.LogFormat("Delegate:\t{0}ms\n", b3.Avg);

        b1.Reset();
        b2.Reset();
        b3.Reset();
    }

    void Update() {
        tick -= Time.deltaTime;

        b1.sw.Start();
        for (int i = 0; i < upd; i++) {
            SendMessage("Hui", i);
        }
        b1.Tick();

        b2.sw.Start();
        for (int i = 0; i < upd; i++) {
            Hui(i);
        }
        b2.Tick();

        b3.sw.Start();
        for (int i = 0; i < upd; i++) {
            huiAction(i);
        }
        b3.Tick();

        if (tick <= 0f) {
            UnityEngine.Debug.LogFormat("Message:\t{0}ms", b1.Avg);
            UnityEngine.Debug.LogFormat("Call:\t{0}ms", b2.Avg);
            UnityEngine.Debug.LogFormat("Delegate:\t{0}ms", b3.Avg);
            UnityEngine.Debug.LogFormat("fps:\t{0}\n", b2.count);
            b1.Reset();
            b2.Reset();
            b3.Reset();
            tick = 1;
        }
    }

    void Hui(int i) {
        double x = UnityEngine.Random.Range(float.MinValue, float.MaxValue);
        x += Math.Pow(x / 123, 3) - i;
    }

    class Bench {
        public Stopwatch sw = new Stopwatch();
        public float tick = 1f;
        public long ms = 0;
        public int count = 0;

        public float Avg {
            get {
                return  ms / count;
            }
        }

        public void Tick() {
            sw.Stop();
            ms += sw.ElapsedMilliseconds;
            ++count;
            sw.Reset();
        }

        public void Reset() {
            tick = 1f;
            count = 0;
            ms = 0;
        }
    }
}