add a random starting x direction to the ball

this means the ball can either go left or righ randomly instead of always going left.

Scripts/Ball.cs

@@ -18,8 +18,9 @@ public partial class Ball : CharacterBody2D
 	{
 		// this should dispose when this method goes out of scope (this means after the velocity variable is assigned)
 		using var rng = new RandomNumberGenerator();
+		rng.Randomize();
 		// set the velocity currently to the left of the screen with a random y angle.
-		_velocity = Vector2.Left * BallSpeed + new Vector2(0, rng.RandfRange(-_maxRandomAngle, _maxRandomAngle) * BallSpeed);
+		_velocity = GetRandomStartingDirection() * BallSpeed + new Vector2(0, rng.RandfRange(-_maxRandomAngle, _maxRandomAngle) * BallSpeed);
 	}
 
 	public override void _PhysicsProcess(double delta)
@@ -38,4 +39,20 @@ public partial class Ball : CharacterBody2D
 		if (collision == null) return;
 		_velocity = _velocity.Bounce(collision.GetNormal());
 	}
+
+	/// <summary>
+	/// this method generates a random number between 0 and 1 and
+	/// either returns Vector2.Left or Vector2.Right based on that number.
+	/// </summary>
+	private Vector2 GetRandomStartingDirection() {
+		using var rng = new RandomNumberGenerator();
+		rng.Randomize();
+		var range = rng.RandiRange(0,1);
+
+		if (range == 0) {
+			return Vector2.Left;
+		}
+
+		return Vector2.Right;
+	}
 }