title: Force applied in box2d object after collision
body: <p>I have a projectile and a tower. When i hurl the projectile it strikes the tower. Based on projectile force the tower is broken. Now I need to know how to get the force that is applied to these 2 object when they collide(not before collision, rather after collision). I know in the following method they are calculated-</p>
  
  <pre><code>void MyContactListener::PostSolve(b2Contact* contact, const b2ContactImpulse *impulse)
  {
      force=impulse-&gt;normalImpulses[0];
  }
  </code></pre>
  
  <p>this gives me the overall force applied, But i want to know the individual force applied to 2 different object.</p>
  
  <p>And another question , this method reside in the subclass of b2ContactListener class. How to pass this value to gameScene where object will be destroyed.</p>