StaminaBar

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


public class StaminaBar : MonoBehaviour
{
        public bool flag = false;

        public bool isWalking = false;

        public GameObject EnergyGreen;
        public GameObject EnergyYellow;
        
        public GameObject StaminaOnHealth1;
        public GameObject StaminaOnHealth2;
        public GameObject StaminaOnHealth3;
        public GameObject StaminaOnHealth4;

public GameObject BlackHealthBar1;
public GameObject BlackHealthBar2;
public GameObject BlackHealthBar3;
public GameObject BlackHealthBar4;

        public GameObject HideUi_Energy_Green;
        public GameObject HideUi_Energy_Yellow;
        


        public PlayerMovement playerSprint;
        
        public float stamina ;
        float maxStamina = 10 ;

        private WaitForSeconds regenTick = new WaitForSeconds(0.1f);

        private Coroutine regen;


        public Slider staminaBar;
        public float dValue ;


    void Start()
    {
        HideUi_Energy_Green.SetActive(false);
        HideUi_Energy_Yellow.SetActive(false);
        StaminaOnHealth1.SetActive(false);
        StaminaOnHealth2.SetActive(false);
        StaminaOnHealth3.SetActive(false);
        StaminaOnHealth4.SetActive(false);
        
        BlackHealthBar1.SetActive(false);
        BlackHealthBar2.SetActive(false);
        BlackHealthBar3.SetActive(false);
        BlackHealthBar4.SetActive(false);
        
        maxStamina = stamina;
        staminaBar.maxValue = maxStamina;
        staminaBar.value = maxStamina;
        
        playerSprint = FindObjectOfType<PlayerMovement>();
    
    
    
    }

    
    
    
    
    
    void OnTriggerStay2D(Collider2D other)
    {
        if (other.gameObject.tag == "FlashLight")
        {
            if(Input.GetKeyDown(KeyCode.E))
            {
            
        HideUi_Energy_Green.SetActive(true);
        HideUi_Energy_Yellow.SetActive(true);
        BlackHealthBar1.SetActive(true);
        BlackHealthBar2.SetActive(true);
        BlackHealthBar3.SetActive(true);
        BlackHealthBar4.SetActive(true);
                
                
                flag = true;
            }
        }
    }
    
    void Update()
    {
        
        
        
        
        if (isWalking == true)
        {

        if (Input.GetKey(KeyCode.LeftShift))
            //if( playerSprint.this.animator.GetCurrentAnimatorStateInfo(0).IsName("New_Idle"))
           // {
                DecreaseEnergy();
            //}
        else if (stamina != maxStamina)  
        IncreaseEnergy();
        staminaBar.value = stamina;
        
        }  

        if (flag == true)
        {
            if (stamina <= 1 )
            {
            EnergyGreen.SetActive(false);
            EnergyYellow.SetActive(true);
            StaminaOnHealth1.SetActive(true);
            StaminaOnHealth2.SetActive(true);
            StaminaOnHealth3.SetActive(true);
            StaminaOnHealth4.SetActive(true);
            
            } 
                else
            {
            EnergyGreen.SetActive(true);
            EnergyYellow.SetActive(false);
            StaminaOnHealth1.SetActive(false);
            StaminaOnHealth2.SetActive(false);
            StaminaOnHealth3.SetActive(false);
            StaminaOnHealth4.SetActive(false);
            }
        }


        
        

    }


    private void DecreaseEnergy()
    {
        if (stamina >= 0)
        stamina -= dValue * Time.deltaTime;
        
        
    }
    
    private void IncreaseEnergy()
    {
        
        
        regen = StartCoroutine(RegenStamina()); 
    }

   
    private IEnumerator RegenStamina()
    {
        yield return new WaitForSeconds(2);
        
        if (stamina < maxStamina)
        {
        stamina += dValue * Time.deltaTime / 2;
        staminaBar.value = stamina; 
        yield return regenTick;
        }                                                                                       
        regen = null;
        
        if(regen != null)
        {
        StopCoroutine(regen);
        } 
    }
}