Question Reflecting a bullet

I have a attackarea, in which i can attack and reflect bullets.
The problem is that the reflection doesn’t work properly.

Here’s a example how it looks:

I wan’t it to reflect it STRAIGHT BACK, not up or down.

These two script-parts are the only relevant for this function:

Code (CSharp):

1. if (collider.tag == "bullet")
2. {
3.     Rigidbody2D rbOther = collider.GetComponent<Rigidbody2D>();
4.     if (rbOther != null)
5.     {
6.         Vector2 incomingVelocity = rbOther.velocity;
7.         Vector2 normal = (collider.transform.position - transform.position).normalized;
8.         Vector2 reflectedVelocity = Vector2.Reflect(incomingVelocity, normal);
9.  
10.         // Weise die reflektierte Velocity dem Rigidbody2D zu
11.         rbOther.velocity = reflectedVelocity;
12.     }
13. }

Code (CSharp):

1. void Update()
2. {
3.     if (Input.GetKeyDown(KeyCode.G))
4.     {
5.         var bullet = Instantiate(bulletPrefab, bulletSpawnpoint.position, bulletSpawnpoint.rotation);
6.         bullet.GetComponent<Rigidbody2D>().velocity = bulletSpawnpoint.up * bulletSpeed;
7.     }
8. }

 

Reflecting it straight back is just negating the vector:

Code (csharp):

1. Vector2 incomingVelocity = rbOther.velocity;
2. Vector2 reflectedVelocity = -incomingVelocity;

That's it.

Keep in mind you might still be colliding on the next frame, especially if the thing you hit is moving closer.

In that case it may be necessary to make a float timer that inhibits bouncing for a short period of time after each bounce.