How to use

ContactListener

in

org.jbox2d.callbacks

listener.beginContact(this);
listener.endContact(this);
listener.preSolve(this, oldManifold);

 public void report(ContactVelocityConstraint[] constraints) {
  if (m_listener == null) {
   return;
  }

  for (int i = 0; i < m_contactCount; ++i) {
   Contact c = m_contacts[i];

   ContactVelocityConstraint vc = constraints[i];
   impulse.count = vc.pointCount;
   for (int j = 0; j < vc.pointCount; ++j) {
    impulse.normalImpulses[j] = vc.points[j].normalImpulse;
    impulse.tangentImpulses[j] = vc.points[j].tangentImpulse;
   }

   m_listener.postSolve(c, impulse);
  }
 }
}

m_contactListener.endContact(c);

m_contactListener.endContact(c);

listener.beginContact(this);
listener.endContact(this);
listener.preSolve(this, oldManifold);

 public void report(ContactVelocityConstraint[] constraints) {
  if (m_listener == null) {
   return;
  }

  for (int i = 0; i < m_contactCount; ++i) {
   Contact c = m_contacts[i];

   ContactVelocityConstraint vc = constraints[i];
   impulse.count = vc.pointCount;
   for (int j = 0; j < vc.pointCount; ++j) {
    impulse.normalImpulses[j] = vc.points[j].normalImpulse;
    impulse.tangentImpulses[j] = vc.points[j].tangentImpulse;
   }

   m_listener.postSolve(c, impulse);
  }
 }
}

m_contactListener.endContact(c);

listener.beginContact(this);
listener.endContact(this);
listener.preSolve(this, oldManifold);

 public void report(ContactVelocityConstraint[] constraints) {
  if (m_listener == null) {
   return;
  }

  for (int i = 0; i < m_contactCount; ++i) {
   Contact c = m_contacts[i];

   ContactVelocityConstraint vc = constraints[i];
   impulse.count = vc.pointCount;
   for (int j = 0; j < vc.pointCount; ++j) {
    impulse.normalImpulses[j] = vc.points[j].normalImpulse;
    impulse.tangentImpulses[j] = vc.points[j].tangentImpulse;
   }

   m_listener.postSolve(c, impulse);
  }
 }
}

m_contactListener.endContact(c);

listener.beginContact(this);
listener.endContact(this);
listener.preSolve(this, oldManifold);

 public void report(ContactVelocityConstraint[] constraints) {
  if (m_listener == null) {
   return;
  }

  for (int i = 0; i < m_contactCount; ++i) {
   Contact c = m_contacts[i];

   ContactVelocityConstraint vc = constraints[i];
   impulse.count = vc.pointCount;
   for (int j = 0; j < vc.pointCount; ++j) {
    impulse.normalImpulses[j] = vc.points[j].normalImpulse;
    impulse.tangentImpulses[j] = vc.points[j].tangentImpulse;
   }

   m_listener.postSolve(c, impulse);
  }
 }
}

m_contactListener.endContact(c);

listener.beginContact(this);
listener.endContact(this);
listener.preSolve(this, oldManifold);

  public void report(ContactVelocityConstraint[] constraints) {
    if (m_listener == null) {
      return;
    }

    for (int i = 0; i < m_contactCount; ++i) {
      Contact c = m_contacts[i];

      ContactVelocityConstraint vc = constraints[i];
      impulse.count = vc.pointCount;
      for (int j = 0; j < vc.pointCount; ++j) {
        impulse.normalImpulses[j] = vc.points[j].normalImpulse;
        impulse.tangentImpulses[j] = vc.points[j].tangentImpulse;
      }

      m_listener.postSolve(c, impulse);
    }
  }
}