2D Game Hiting ball bug

How to fix my charcter doesnt move if ball bounces back from wall



Player script

Code (CSharp):

1. using System.Collections;
2. using System.Collections.Generic;
3. using UnityEngine;
4.  
5. public class PlayerMovement : MonoBehaviour {
6.  
7.     public float speed;
8.     private Rigidbody2D myRigidbody;
9.     private Vector3 change;
10.     private Animator animator;
11.  
12.  
13.  
14.     // Use this for initialization
15.     void Start () {
16.         animator = GetComponent<Animator>();
17.         myRigidbody = GetComponent<Rigidbody2D>();
18.  
19.     }
20.    
21.     // Update is called once per frame
22.     void Update () {
23.         change = Vector3.zero;
24.         change.x = Input.GetAxisRaw("Horizontal");
25.         // A & D
26.         change.y = Input.GetAxisRaw("Vertical");
27.  
28.         // W & S
29.         UpdateAnimationAndMove();
30.  
31.     }
32.  
33.     void UpdateAnimationAndMove()
34.     {
35.         if (change != Vector3.zero)
36.         {
37.             MoveCharacter();
38.             animator.SetFloat("moveX", change.x);
39.             animator.SetFloat("moveY", change.y);
40.             animator.SetBool("moving", true);
41.         }
42.  
43.         else
44.         {
45.             animator.SetBool("moving", false);
46.         }
47.  
48.         }
49.  
50.     void MoveCharacter()
51.     {
52.         myRigidbody.MovePosition(
53.             transform.position + change * speed * Time.deltaTime
54.             );
55.     }
56. }
57.  

 

How to stop my character from moving after getting hit by ball bounced by wall