I need to control my player using a joystick. I used the default joystick script in Unity, but i am not able to integrate it with the player. Please help. I am attaching the player script, its currently using keyboard input

using UnityEngine; using System.Collections; using UnityStandardAssets.CrossPlatformInput; public class Player : MonoBehaviour {

 // movement
 private float moveSpeed = 5;
 private int moveDirX;
 private int moveDirY;
 private Vector3 movement;
 private Transform thisTransform;

 private float xValAtEntry;
     
 public static bool blockedRight = false;
 public static bool blockedLeft = false;
 public static bool blockedUp = false;
 public static bool blockedDown = false;
 public static bool onLadder = false;
 public static bool isLeft;
 public static bool isRight;
 public static bool isUp;
 public static bool isDown;
 public static float playerHitboxX = 0.225f; // player x = 0.45
 public static float playerHitboxY = 0.5f;
 public static bool alive;
 public static bool onTop = false;

 public static float orthSize;
 public static float orthSizeX;
 public static float orthSizeY;
 public static float camRatio;
 private Vector3 ladderHitbox;

 public static int facingDir = 1; // 1 = left, 2 = right, 3 = up, 4 = down
 public enum anim { None, WalkLeft, WalkRight, RopeLeft, RopeRight, Climb, ClimbStop, StandLeft, StandRight, HangLeft, HangRight, FallLeft, FallRight }

 public static Vector3 glx;
 
 void Awake() 
 {
     thisTransform = transform;
 }
 
 void Start()
 {
     alive = true;
 }
 
 /* ============================== CONTROLS ============================== */
 
 public void Update ()
 {
   

     // keyboard input
     if (Input.GetKey (KeyCode.A) || Input.GetKey (KeyCode.LeftArrow) ) {
         isLeft = true;
     }
     if (Input.GetKey (KeyCode.D) || Input.GetKey (KeyCode.RightArrow) ) {
         isRight = true;
     }

     if (Input.GetKey (KeyCode.W) || Input.GetKey (KeyCode.UpArrow)) {
         isUp = true;
     }
     if (Input.GetKey (KeyCode.S) || Input.GetKey (KeyCode.DownArrow)) {
         isDown = true;
     }

     moveDirX = 0;
     moveDirY = 0;
     
     // move left
     if(isLeft && !blockedLeft) 
     {
         moveDirX = -1;
     }
     
     // move right
     if(isRight && !blockedRight) 
     {
         moveDirX = 1;
     }
     
     // move up on ladder
     if(isUp && !blockedUp && onLadder)
     {
         moveDirY = 1;
     }
     
     // move down on ladder
     if(isDown && !blockedDown && onLadder) 
     {
         moveDirY = -1;
     }

     movement = new Vector3(moveDirX, moveDirY,0f) * Time.deltaTime*moveSpeed;
     thisTransform.Translate(movement.x,movement.y, 0f);
 }

 /* ============================== TRIGGER EVENTS ====================================================================== */
 
 void OnTriggerEnter(Collider other)
 {
     xValAtEntry = thisTransform.position.y;
     onLadder = true;
 }
 
 void OnTriggerStay(Collider other)
 {
     
     // is the player overlapping a ladder?
     if(other.gameObject.CompareTag("Ladder"))
     {
         onLadder = true;
         blockedUp = false;
         blockedDown = false;

         if ( thisTransform.position.y > xValAtEntry)
         {
             blockedLeft = true;
             blockedRight = true;
         }
         if (!onTop && thisTransform.position.y < xValAtEntry) {
             blockedLeft = true;
             blockedRight = true;
         }
         ladderHitbox.y = other.transform.localScale.y * 0.5f; // get half the ladders Y height
         
         // is the player overlapping the ladder?
         // if player is landing on top of ladder from a fall, let him pass by
         if ((thisTransform.position.y + Player.playerHitboxY) < ((ladderHitbox.y + 0.1f) + other.transform.position.y))
         {
             onLadder = true;
         }
         
         // if the player is at the top of the ladder, then snap her to the top
         if ((thisTransform.position.y + Player.playerHitboxY) >= (ladderHitbox.y + other.transform.position.y) && isUp) {
             blockedUp = true;
             Player.glx = thisTransform.position;
             Player.glx.y = (ladderHitbox.y + other.transform.position.y) - Player.playerHitboxY;
             thisTransform.position = Player.glx;
             onTop = true;
             blockedLeft = false;
             blockedRight = false;
             xValAtEntry = thisTransform.position.y;
         } else {
             onTop = false;
         }
         
         // if the player is at the bottom of the ladder, then snap her to the bottom
         if ((thisTransform.position.y - Player.playerHitboxY) <= (-ladderHitbox.y + other.transform.position.y))
         {
             blockedDown = true;
             Player.glx = thisTransform.position;
             Player.glx.y = (-ladderHitbox.y + other.transform.position.y) + Player.playerHitboxY;
             thisTransform.position = Player.glx;
             blockedLeft = false;
             blockedRight = false;
         }
     }
 }
 
 void OnTriggerExit(Collider other)
 {
     // did the player exit a ladder trigger?
     if (other.gameObject.CompareTag("Ladder")) 
     {
         onLadder = false;
         blockedLeft = false;
         blockedRight = false;
     }
 }

}