internal void Destroy(Contact contact)
{
Fixture fixtureA = contact.FixtureA;
Fixture fixtureB = contact.FixtureB;
Body bodyA = fixtureA.Body;
Body bodyB = fixtureB.Body;
if (contact.IsTouching())
{
//Report the separation to both participants:
if (bodyA != null)
{
bodyA.OnSeparation(fixtureA, fixtureB);
}
//Reverse the order of the reported fixtures. The first fixture is always the one that the
//user subscribed to.
if (bodyB != null)
{
bodyB.OnSeparation(fixtureB, fixtureA);
}
if (this.EndContact != null)
{
this.EndContact(contact);
}
}
// Remove from the world.
this.ContactList.Remove(contact);
// Remove from body 1
if (contact.NodeA.Prev != null)
{
contact.NodeA.Prev.Next = contact.NodeA.Next;
}
if (contact.NodeA.Next != null)
{
contact.NodeA.Next.Prev = contact.NodeA.Prev;
}
if (contact.NodeA == bodyA.ContactList)
{
bodyA.ContactList = contact.NodeA.Next;
}
// Remove from body 2
if (contact.NodeB.Prev != null)
{
contact.NodeB.Prev.Next = contact.NodeB.Next;
}
if (contact.NodeB.Next != null)
{
contact.NodeB.Next.Prev = contact.NodeB.Prev;
}
if (contact.NodeB == bodyB.ContactList)
{
bodyB.ContactList = contact.NodeB.Next;
}
contact.Destroy();
}