Unity Game BreakOut ball loses speed and direction - unity3d

Question

I just finished a BreakOut style game but there is a bug where sometimes the ball gets stuck to the edges of the map with no direction or speed as shown in the screenshot
What I see is that it happens when the ball completely loses trajectory or speed, but could not solve the error
enter image description here
my code
public class Ball : MonoBehaviour
{
[SerializeField] Rigidbody2D rigidbody2D;
Vector2 moveDirection;
Vector2 currentVelocity;
float velocity=10;
//GameManager gameManager;
Transform paddle;
[SerializeField] AudioController audioController;
[SerializeField] AudioClip bounceSfx;
[SerializeField] AudioClip dieSfx;
public bool superBall;
[SerializeField] float superBallTime=10;
[SerializeField]float yMinSpeed = 10;
[SerializeField]TrailRenderer trailRenderer;
public bool SuperBall
{
get=> superBall;
set{
superBall=value;
if(superBall)
StartCoroutine(ResetSuperBall());
}
}
// Start is called before the first frame update
void Start()
{
//rigidbody2D = GetComponent<Rigidbody2D>();
//rigidbody2D.velocity = Vector2.up*velocity*Time.deltaTime;
GameManager.Instance = FindObjectOfType<GameManager>();
paddle = transform.parent;
}
// Update is called once per frame
void Update()
{
currentVelocity = rigidbody2D.velocity;
if (Mathf.Abs(currentVelocity.y) < 3 && Mathf.Abs(currentVelocity.y) < 3 && GameManager.Instance.ballOnGame)
{
velocity = 10;
rigidbody2D.velocity = Vector2.up * velocity ;
}
if (Mathf.Abs(currentVelocity.y) + Mathf.Abs(currentVelocity.y) < 10 && GameManager.Instance.ballOnGame)
{
velocity = 10;
rigidbody2D.velocity = Vector2.up * velocity ;
}
if (velocity <10 && GameManager.Instance.ballOnGame)
{
velocity = 10;
rigidbody2D.velocity = Vector2.up * velocity ;
}
if ((Input.GetKey(KeyCode.W) && GameManager.Instance.ballOnGame == false)||(Input.GetKey(KeyCode.Space) && GameManager.Instance.ballOnGame == false))
{
rigidbody2D.velocity = Vector2.up * velocity ;
transform.parent = null;
GameManager.Instance.ballOnGame = true;
rigidbody2D.isKinematic = false;
rigidbody2D.AddForce(new Vector3(velocity, velocity, 0));
if (!GameManager.Instance.GameStarted)
{
GameManager.Instance.GameStarted = true;
}
}
}
private void OnCollisionEnter2D(Collision2D collision)
{
if (collision.transform.CompareTag("Brick") && superBall)
{
rigidbody2D.velocity = currentVelocity;
return;
}
moveDirection=Vector2.Reflect(currentVelocity,collision.GetContact(0).normal);
if (Mathf.Abs(moveDirection.y) < yMinSpeed)
{
//permitir velocidad minima
moveDirection.y = yMinSpeed*Mathf.Sign(moveDirection.y);
}
rigidbody2D.velocity=moveDirection;
audioController.PlaySfx(bounceSfx);
if (collision.transform.CompareTag("BottomLimit"))
{
if(GameManager.Instance != null)
{
GameManager.Instance.PlayerLives--;
audioController.PlayDie(dieSfx);
if (GameManager.Instance.PlayerLives > 0)
{
rigidbody2D.velocity = Vector2.zero;
transform.SetParent(paddle);
transform.localPosition = new Vector2(0, 0.65f);
GameManager.Instance.ballOnGame = false;
}
}
}
}
IEnumerator ResetSuperBall()
{
trailRenderer.enabled = true;
yield return new WaitForSeconds(superBallTime);
trailRenderer.enabled = false;
GameManager.Instance.powerIsActive = false;
superBall = false;
}
}

Answer 1

This is a common issue with Rigidbodies at low velocities. The physics engine implements a Physics2D.velocityThreshold that is designed to dampen slow bounces and calm down a pile of Rigidbodies.
The default value for velocityThreshold is 1, meaning that the x or y component of the velocity that is slower will be floored to 0.
To resolve this issue you can simply lower the value to 0.001. You can do it in the Physcs2d tab located at Edit->ProjectSettings->Physics2d