/// Set the type of this body. This may alter the mass and velocity.
public void SetType(BodyType type)
{
Debug.Assert(m_world.IsLocked() == false);
if (m_world.IsLocked() == true)
{
return;
}
if (m_type == type)
{
return;
}
m_type = type;
ResetMassData();
if (m_type == BodyType.b2_staticBody)
{
m_linearVelocity.SetZero();
m_angularVelocity = 0.0f;
m_sweep.a0 = m_sweep.a;
m_sweep.c0 = m_sweep.c;
SynchronizeFixtures();
}
SetAwake(true);
m_force.SetZero();
m_torque = 0.0f;
// Delete the attached contacts.
b2ContactEdge ce = m_contactList;
while (ce != null)
{
b2ContactEdge ce0 = ce;
ce = ce.next;
m_world.m_contactManager.Destroy(ce0.contact);
}
m_contactList = null;
// Touch the proxies so that new contacts will be created (when appropriate)
b2BroadPhase broadPhase = m_world.m_contactManager.m_broadPhase;
for (b2Fixture f = m_fixtureList; f != null; f = f.m_next)
{
int proxyCount = f.m_proxyCount;
for (int i = 0; i < proxyCount; ++i)
{
broadPhase.TouchProxy(f.m_proxies[i].proxyId);
}
}
}
public virtual void Refilter()
{
if (m_body == null)
{
return;
}
// Flag associated contacts for filtering.
b2ContactEdge edge = m_body.ContactList;
while (edge != null)
{
b2Contact contact = edge.Contact;
b2Fixture fixtureA = contact.GetFixtureA();
b2Fixture fixtureB = contact.GetFixtureB();
if (fixtureA == this || fixtureB == this)
{
contact.FlagForFiltering();
}
edge = edge.Next;
}
b2World world = m_body.World;
if (world == null)
{
return;
}
// Touch each proxy so that new pairs may be created
b2BroadPhase broadPhase = world.ContactManager.BroadPhase;
for (int i = 0; i < m_proxyCount; ++i)
{
broadPhase.TouchProxy(m_proxies[i].proxyId);
}
}