scripts/Wall.cs

using Godot;

public partial class Wall : Area2D
{
    [Export]
    public Vector2 BallResetDirection = Vector2.Left;
	
    [Export]
    public Node2D Scorer { get; set; }

    public void OnAreaEntered(Area2D area)
    {
        if (area is Ball ball)
        {
            ball.Reset(BallResetDirection);
            if (Scorer is IHasScore scoring)
            {
                scoring.IncrementScore();
            }
        }
    }
}