How can I call an event to cause a float to jump an incremented amount.

See more:

C#

event

health

got a few questions on coding in C#, i'll just ask one at a time so this doesn't get too lengthy.

I would like when the player walks in the field of view of the enemy, the enemy rushes at the player and then disappears, causing a raise in heart rate by 20 BPM.

I think events, PlayerInViewEvent, and RateIncreaseEvent are what would work for this. but i do not know how to get that all to work in the code, and i don't know if those are even the best way to go about this. Can i please get some coding help.

here is the code i have so far. which basically just raises the heart rate of the player when they get close to the enemy and lowers it when they get away from the enemy.

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

public class HeartRate : MonoBehaviour {

    public GameObject Player;
    public GameObject Enemy;
    float heartRateBase = 80; // 80 BPM
   public float heartRate = 100;

    float safeDistance = 5; // distance away form the enemy where heart rate goes down

    float relaxRate = 0.005f; //  how fast the player recovers
    float stressRate = 0.05f;// The closer the plauer is to the enemy the more it will increase

    void FixedUpdate()
    {
        // Find distance from enemy
        float dist = Vector3.Distance (Player.transform.position, Enemy.transform.position);

        // Check to see if player is safe
        if (dist > safeDistance)
        {
            // Decrease player heart Rate
            if (heartRate > heartRateBase)
                heartRate -= relaxRate;
        }
        else
        {
            // Increase the players heart rate depending on how close they are
            float rate = 1 - dist / safeDistance;
            heartRate += stressRate * rate;
        }

    }
}

What I have tried:

private int JumpRate;

public event System.EventHandler ChangeHeartRate;

protected virtual void OnHeartChanged()
{ 
     if (ChangeHeartRate!= null) ChangeHeartRate(this,EventArgs.Empty); 
}

public int heartT
{
    get
    {
         return JumpRate;
    }

    set
    {
         //#3
         JumpRate=value;
         OnHeartChanged();
    }
 }