Heart.cs

using UnityEngine;
using System;
using System.Collections;
using System.Collections.Generic;
using System.Linq;

public enum HeartTier : byte
{
    Normal = 0,
    Target = 1,
    Vigorous = 2,
    Extreme = 3
}

public delegate void HeartTierChangedHandler (HeartTier newTier, HeartTier prevTier);

public class Heart : MonoBehaviour
{
    public static event HeartTierChangedHandler TierChanged;

    public static float Rate
    {
        get { return _rate; }
    }

    public static float FireAntHR
    {
        get { return _fireAntHR; }
    }

    public static float PolarHR
    {
        get { return _polarHR; }
    }

    public static HeartTier Tier
    {
        get { return _tier; }
    }

    public static float TierTime
    {
        get { return (float)DateTime.Now.Subtract(_tierChangeTime).TotalSeconds; }
    }
    
    public static float NormalizedRate
    {
        get
        {
            if (_health != null)
                return (_rate - _health.RestingHeartRate) / (_health.TargetHeartRate - _health.RestingHeartRate);
            return 0;
        }
    }

    static float _rate;
    static float _fireAntHR;
    static float _polarHR;
    static HeartTier _tier;
    static PlayerHealthProfile _health;
    static DateTime _tierChangeTime;

    public static void InjectRate (float heartRate)
    {
        _rate = heartRate;

        if (_health != null)
        {
            var prevTier = _tier;

            _tier = _health.GetHeartTier(heartRate);

            if (_tier == HeartTier.Extreme)
                ExclamationBar.Exclaim("Slow down!");

            if (prevTier != _tier)
            {
                _tierChangeTime = DateTime.Now;

                if (TierChanged != null)
                    TierChanged(_tier, prevTier);
            }
        }
    }

    public static void InjectFireAntRate(float rate)
    {
        _fireAntHR = rate;
    }

    public static void InjectPolarRate(float rate)
    {
        _polarHR = rate;
    }

    void Start ()
    {
        GameClient.Instance.ConnectedToWorldServer += OnConnectedToWorldServer;
        GameClient.Instance.DisconnectedFromWorldServer += OnDisconnectedFromWorldServer;
    }

    void OnConnectedToWorldServer ()
    {
        _health = Game.LocalPlayerProfile.Health;
    }

    void OnDisconnectedFromWorldServer ()
    {
        _health = null;
    }
}