update

src/main/java/PingPong/GamePanel.java

@@ -71,6 +71,13 @@ public class GamePanel extends JPanel implements Runnable {
             paddle_2.y2 = 0;
         if (paddle_2.y2 >= (FRAME_HEIGHT-PADDLE_HEIGHT))
             paddle_2.y2 = FRAME_HEIGHT-PADDLE_HEIGHT;
+
+        if(collisionChecker.didTouchLeftEdge(ball.x)) {
+            score.player_2++;
+            newPaddle();
+            newBall();
+
+        }
     }