[ASK] adding Lives System to 2.5D side scroller

halo, im new in unity.

i want to ask about lives system fo 2.5D,

so i want to add lives ( not health ) to my character, so when the lives run out, then game is over.

i need help for modify this script,

here the script,

player health

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

public class playerHealth : MonoBehaviour { public float fullHealth; float currenthealth;

 public GameObject playerDeathFX;

 public Slider playerHealthSlider;
 public Image damageScreen;
 Color flashColor = new Color (255f,255f,255f,1f);
 float flashSpeed = 5f;
 bool damaged = false;

 AudioSource PlayerAS;



 // Use this for initialization
 void Start () {
     currenthealth = fullHealth;
     playerHealthSlider.maxValue = fullHealth;
     playerHealthSlider.value = currenthealth;
     PlayerAS = GetComponent<AudioSource> ();


 
 }
 
 // Update is called once per frame
 void Update () {
     if (damaged) {
         damageScreen.color = flashColor;
     } else {
         damageScreen.color = Color.Lerp (damageScreen.color, Color.clear, flashSpeed * Time.deltaTime);
     }
     damaged = false;
 
 }

 public void addDamage(float Damage) {
     currenthealth -= Damage;
     playerHealthSlider.value = currenthealth;
     damaged = true;
     PlayerAS.Play ();
     if(currenthealth <= 0 ) {

         makeDead ();
     }

} public void addHealth (float health) { currenthealth += health; if (currenthealth > fullHealth) currenthealth = fullHealth; playerHealthSlider.value = currenthealth; } public void makeDead(){ Instantiate(playerDeathFX, transform.position, Quaternion.Euler(new Vector3(-90,0,0))); Destroy(gameObject); } }

And here is Player Controller

using UnityEngine; using System.Collections;

public class PlayerControler : MonoBehaviour { public float runspeed; public float walkspeed; bool running;

 Rigidbody RB; 
 Animator Anim;

 bool facingright;
 //jump
 bool grounded = false;
 Collider[] groundCollisions;
 float groundCheckRadius = 0.2f;
 public LayerMask groundLayer;
 public Transform groundCheck;
 public float jumpHeight;


 // Use this for initialization
 void Start () {

     RB = GetComponent<Rigidbody> ();
     Anim= GetComponent<Animator> ();
     facingright = true;

 }

 // Update is called once per frame
 void Update () {

 }

 void FixedUpdate() {
     running = false;

     if (grounded && Input.GetAxis ("Jump") > 0) { 
         grounded = false;
         Anim.SetBool ("grounded", grounded);
         RB.AddForce (new Vector3 (0, jumpHeight, 0));

     }
     groundCollisions = Physics.OverlapSphere (groundCheck.position, groundCheckRadius, groundLayer);
     if (groundCollisions.Length > 0) grounded = true;
     else
         grounded = false;

     Anim.SetBool ("grounded", grounded);

     float move = Input.GetAxis("Horizontal");
     Anim.SetFloat ("speed",Mathf.Abs(move));

     float sneaking = Input.GetAxisRaw ("Fire3");
     Anim.SetFloat ("sneaking",Mathf.Abs(sneaking));

     float firing = Input.GetAxis ("Fire2");
     Anim.SetFloat ("shooting", firing);

     if (sneaking > 0 || firing >0 && grounded ) {
         RB.velocity = new Vector3 (move * walkspeed, RB.velocity.y, 0);
     }
     else {
         RB.velocity = new Vector3 (move * runspeed, RB.velocity.y, 0);
         if (Mathf.Abs(move) >0) running = true;
     }

     if (move>0 && !facingright) Flip ();
     else if (move<0 && facingright) Flip ();

 }
 void Flip(){ 
     facingraight = !facingright;
     Vector3 theScale = transform.localScale;
     theScale.z *= -1;
     transform.localScale = theScale;
 }

 public float GetFacing ()
 {
     if (facingright)
         return 1;
     else
         return -1;
     
 }
 public bool getRunning(){
     return (running);
 }

}

please help

thank you so much