// This is the top level collision call for the time step. Here
// all the narrow phase collision is processed for the world
// contact list.
public void Collide()
{
// Update awake contacts.
b2Contact c = m_contactList;
while (c)
{
b2Fixture fixtureA = c.GetFixtureA();
b2Fixture fixtureB = c.GetFixtureB();
int indexA = c.GetChildIndexA();
int indexB = c.GetChildIndexB();
b2Body bodyA = fixtureA.GetBody();
b2Body bodyB = fixtureB.GetBody();
// Is this contact flagged for filtering?
if (c.m_flags & b2Contact.e_filterFlag)
{
// Should these bodies collide?
if (bodyB.ShouldCollide(bodyA) == false)
{
b2Contact cNuke = c;
c = cNuke.GetNext();
Destroy(cNuke);
continue;
}
// Check user filtering.
if (m_contactFilter && m_contactFilter.ShouldCollide(fixtureA, fixtureB) == false)
{
b2Contact cNuke = c;
c = cNuke.GetNext();
Destroy(cNuke);
continue;
}
// Clear the filtering flag.
c.m_flags &= ~b2Contact.e_filterFlag;
}
bool activeA = bodyA.IsAwake() && bodyA.m_type != b2BodyType.b2_staticBody;
bool activeB = bodyB.IsAwake() && bodyB.m_type != b2BodyType.b2_staticBody;
// At least one body must be awake and it must be dynamic or kinematic.
if (activeA == false && activeB == false)
{
c = c.GetNext();
continue;
}
int proxyIdA = fixtureA.m_proxies[indexA].proxyId;
int proxyIdB = fixtureB.m_proxies[indexB].proxyId;
bool overlap = m_broadPhase.TestOverlap(proxyIdA, proxyIdB);
// Here we destroy contacts that cease to overlap in the broad-phase.
if (overlap == false)
{
b2Contact cNuke = c;
c = cNuke.GetNext();
Destroy(cNuke);
continue;
}
// The contact persists.
c.Update(m_contactListener);
c = c.GetNext();
}
}
// This is the top level collision call for the time step. Here
// all the narrow phase collision is processed for the world
// contact list.
public void Collide()
{
// Update awake contacts.
b2Contact c = m_world.m_contactList;
while (c != null)
{
b2Fixture fixtureA = c.GetFixtureA();
b2Fixture fixtureB = c.GetFixtureB();
b2Body bodyA = fixtureA.GetBody();
b2Body bodyB = fixtureB.GetBody();
if (bodyA.IsAwake() == false && bodyB.IsAwake() == false)
{
c = c.GetNext();
continue;
}
b2Contact cNuke;
// Is this contact flagged for filtering?
if ((c.m_flags & b2Contact.e_filterFlag) > 0)
{
// Should these bodies collide?
if (bodyB.ShouldCollide(bodyA) == false)
{
cNuke = c;
c = cNuke.GetNext();
Destroy(cNuke);
continue;
}
// Check user filtering.
if (m_contactFilter.ShouldCollide(fixtureA, fixtureB) == false)
{
cNuke = c;
c = cNuke.GetNext();
Destroy(cNuke);
continue;
}
// Clear the filtering flag
c.m_flags &= ~b2Contact.e_filterFlag;
}
object proxyA = fixtureA.m_proxy;
object proxyB = fixtureB.m_proxy;
bool overlap = m_broadPhase.TestOverlap(proxyA, proxyB);
// Here we destroy contacts that cease to overlap in the broadphase
if (overlap == false)
{
cNuke = c;
c = cNuke.GetNext();
Destroy(cNuke);
continue;
}
c.Update(m_contactListener);
c = c.GetNext();
}
}