Simple Collision Deflection (Pong)

Hi,

I am working on my first Unity game, a Pong clone.

I have utilised some of the in built features to get the main game working although I am having trouble with the ball deflecting at an angle off the paddle unless it $$anonymous$$ts the edge. When it $$anonymous$$ts the flat face of the object it just deflects horizontally across the x plane.

The ball is a rigidbody w$$anonymous$$ch $$anonymous$$ts box colliders on the paddles. The ball has one script and the verticalcontroller script manages the paddles.

Also there is no gravity, angular drag or friction enabled.

 using UnityEngine;
 using System.Collections;
 
 public class Ball : MonoBehaviour {
 
     private const float velocityIncrement = 1.0f;
     
     void Start() {
         
         Reset();    
     }
     
     void OnTriggerEnter(){
         Reset();
     }
     
     void Update()
     {        
         //rigidbody.AddForce(10, 10, 0, ForceMode.Impulse);
         rigidbody.velocity *= velocityIncrement;
     }
     
     private void Reset()
     {
         transform.position = Vector3.zero;
         rigidbody.velocity = new Vector3 (80,1,0);
         //rigidbody.angularVelocity = new Vector3 (0,10,0);
     }
         
     
 }

 using UnityEngine;
 using System.Collections;
 
 public class VerticalController : MonoBehaviour {
 
     public string axisName = "Vertical";
     public float speed = .5f;
     
     // Update is called once per frame
     void Update () {
     
         var delta = new Vector3(0,speed,0);
         
         if (Input.GetAxis(axisName) >= .001)
             delta *= 1f;
         else if (Input.GetAxis(axisName) <= -.001)
             delta *= -1f;
         else
             delta = Vector3.zero;
         
                       
         transform.position += delta;
     
     }
 }