Detect when you are about to solve a collision and when you have solved it

The Pre-Solve Event is called after collision detection, but before collision resolution, so you can interact with a collision before it's solved. The Post-Solve Event occurs when a collision has been solved, and allows us to know the impulse of the collision.

  1. Add the following two functions to the customContact class:
    override public function PreSolve(contact:b2Contact, oldManifold:b2Manifold):void { if (contact.GetManifold().m_pointCount>0) { trace("a collision has been pre solved"); var fixtureA:b2Fixture=contact.GetFixtureA(); var fixtureB:b2Fixture=contact.GetFixtureB(); var bodyA:b2Body=fixtureA.GetBody(); var bodyB:b2Body=fixtureB.GetBody(); trace("first body: "+bodyA.GetUserData()); ...

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