BlockBreakerRogueLite/Assets/Scripts/BallEffects/PiercingEffect.cs

using UnityEngine;

public class PiercingEffect : BallEffectBase
{
    private int _remainingPierceHits;
    private PiercingEffectDefinition Config => definition as PiercingEffectDefinition;

    public override void OnBallLaunched(BallScript ball)
    {
        _remainingPierceHits = Config != null ? Config.PierceHits : 0;
    }

    public override void OnBallReset(BallScript ball)
    {
        _remainingPierceHits = Config != null ? Config.PierceHits : 0;
    }

    public override void OnHitBlock(BallScript ball, blockScript block, Collision2D collision)
    {
        if (_remainingPierceHits == 0)
            return;

        if (_remainingPierceHits > 0)
            _remainingPierceHits--;

        // Override post-collision bounce and keep travelling in the incoming direction.
        Vector2 incoming = ball.GetPrePhysicsVelocity();
        if (incoming.sqrMagnitude < 0.0001f)
            return;

        ball.Body.linearVelocity = incoming.normalized * ball.GetCurrentSpeed();
    }
}