Box2D.Dynamics.Body.DestroyFixture C# (CSharp) Method

        public void DestroyFixture(Fixture fixture)
        {
            Debug.Assert(World.Locked == false);
            if (World.Locked == true)
            {
                return;
            }

            Debug.Assert(fixture.Body == this);

            // Remove the fixture from this body's singly linked list.
            Debug.Assert(FixtureCount > 0);
            Fixture node = FixtureList;
            Fixture last = null; // java change
            bool found = false;
            while (node != null)
            {
                if (node == fixture)
                {
                    node = fixture.Next;
                    found = true;
                    break;
                }
                last = node;
                node = node.Next;
            }

            // You tried to remove a shape that is not attached to this body.
            Debug.Assert(found);

            // java change, remove it from the list
            if (last == null)
            {
                FixtureList = fixture.Next;
            }
            else
            {
                last.Next = fixture.Next;
            }

            // Destroy any contacts associated with the fixture.
            ContactEdge edge = ContactList;
            while (edge != null)
            {
                Contact c = edge.Contact;
                edge = edge.Next;

                Fixture fixtureA = c.FixtureA;
                Fixture fixtureB = c.FixtureB;

                if (fixture == fixtureA || fixture == fixtureB)
                {
                    // This destroys the contact and removes it from
                    // this body's contact list.
                    World.ContactManager.Destroy(c);
                }
            }

            if ((Flags & TypeFlags.Active) == TypeFlags.Active)
            {
                BroadPhase broadPhase = World.ContactManager.BroadPhase;
                fixture.DestroyProxies(broadPhase);
            }

            fixture.Destroy();
            fixture.Body = null;
            fixture.Next = null;

            --FixtureCount;

            // Reset the mass data.
            ResetMassData();
        }