public void ContactUpdate(CollideEventArg contact)
{
Contacted?.Invoke(this, contact);
}
internal void Collide()
{
Dictionary <int, HashSet <Body> > dictionary = new Dictionary <int, HashSet <Body> >();
HashSet <Contact> setOfContacts = null;
// Update awake contacts.
#if USE_ACTIVE_CONTACT_SET
ActiveList.AddRange(ActiveContacts);
foreach (var c in ActiveList)
{
#else
for (int i = 0; i < ContactList.Count; i++)
{
Contact c = ContactList[i];
#endif
Fixture fixtureA = c.FixtureA;
Fixture fixtureB = c.FixtureB;
int indexA = c.ChildIndexA;
int indexB = c.ChildIndexB;
Body bodyA = fixtureA.Body;
Body bodyB = fixtureB.Body;
//num++;
//Debug.WriteLine(num);
//Do no try to collide disabled bodies
if (!bodyA.Enabled || !bodyB.Enabled)
{
continue;
}
// Is this contact flagged for filtering?
if (c.FilterFlag)
{
// Should these bodies collide?
if (bodyB.ShouldCollide(bodyA) == false)
{
Contact cNuke = c;
Destroy(cNuke);
continue;
}
// Check default filtering
if (ShouldCollide(fixtureA, fixtureB) == false)
{
Contact cNuke = c;
Destroy(cNuke);
continue;
}
// Check user filtering.
if (ContactFilter != null && ContactFilter(fixtureA, fixtureB) == false)
{
Contact cNuke = c;
Destroy(cNuke);
continue;
}
// Clear the filtering flag.
c.FilterFlag = false;
}
bool activeA = bodyA.Awake && bodyA.BodyType != BodyType.Static;
bool activeB = bodyB.Awake && bodyB.BodyType != BodyType.Static;
// At least one body must be awake and it must be dynamic or kinematic.
if (activeA == false && activeB == false)
{
#if USE_ACTIVE_CONTACT_SET
ActiveContacts.Remove(c);
#endif
continue;
}
int proxyIdA = fixtureA.Proxies[indexA].ProxyId;
int proxyIdB = fixtureB.Proxies[indexB].ProxyId;
bool overlap = BroadPhase.TestOverlap(proxyIdA, proxyIdB);
// Here we destroy contacts that cease to overlap in the broad-phase.
if (overlap == false)
{
Contact cNuke = c;
Destroy(cNuke);
continue;
}
// The contact persists.
c.SetContactManager(this);
c.MyUpdate(this, dictionary);
}
Contacted?.Invoke(this, new CollideEventArg(dictionary));
#if USE_ACTIVE_CONTACT_SET
ActiveList.Clear();
#endif
}