internal void RemoveCharacterSync(PhysxCharacter physxCharacter)
{
_charActors.Remove(physxCharacter);
}
/// <summary>
/// Called by another PhysxCharacter when it collides with this one
/// </summary>
/// <param name="physxCharacter"></param>
/// <param name="shape"></param>
private void HitByOtherCharacter(PhysxCharacter physxCharacter, PhysX.Shape shape)
{
_collisionsLastFrame.Add(shape);
}
internal void AddCharacterSync(PhysxCharacter newChar)
{
_charActors.Add(newChar);
}
private void TerminateAvatarContacts(PhysxCharacter physxCharacter)
{
if (_avatarTouchCounts.IsValueCreated)
{
HashSet<PhysX.Shape> contactedShapeSet;
if (_avatarTouchCounts.Value.TryGetValue(physxCharacter, out contactedShapeSet))
{
//we need to make a copy here, because ProcessCharacterContactChange() can
//result in _avatarTouchCounts being modified while we're iterating
PhysX.Shape[] contactedShapes = contactedShapeSet.ToArray();
foreach (var shape in contactedShapes)
{
PhysxPrim myPrim;
if (_shapeToPrimIndex.TryGetValue(shape, out myPrim))
{
myPrim.ProcessCharacterContactChange(-1, myPrim, shape, physxCharacter);
}
}
}
}
}
internal void ContactedCharacterDeleted(PhysxCharacter physxCharacter)
{
TerminateAvatarContacts(physxCharacter);
}
private void HandleTrackedCharacterContactChange(int change, PhysxPrim ourPrim, PhysX.Shape primShape, PhysxCharacter other)
{
HashSet<PhysX.Shape> collidingShapes;
if (!_avatarTouchCounts.Value.TryGetValue(other, out collidingShapes))
{
if (change < 0)
{
//we have no record of colliding with this object. therefore removing a
//collision leaves no change to state
return;
}
collidingShapes = new HashSet<PhysX.Shape>();
_avatarTouchCounts.Value[other] = collidingShapes;
}
if (change > 0 && !collidingShapes.Add(primShape))
{
//we're already colliding with this object. no change in state
return;
}
else if (change < 0 && !collidingShapes.Remove(primShape))
{
//we weren't colliding with this object. no change in state
return;
}
int newTotal = collidingShapes.Count;
//m_log.DebugFormat("Char Contact Change: This: {0}, Other: {1}, Chg: {2}, Tot: {3}", this.SOPName, other.SOPName, change, collidingShapes.Count);
if (newTotal == 0 && change < 0)
{
//we've lost all contact with this prim, notify of collision_end
ourPrim.SendCollisionUpdate(new CollisionEventUpdate { OtherColliderLocalId = other.LocalID, Type = CollisionEventUpdateType.CharacterCollisionEnded });
_avatarTouchCounts.Value.Remove(other);
return;
}
if (newTotal == 1 && change > 0)
{
//we have begun colliding with a new object
ourPrim.SendCollisionUpdate(new CollisionEventUpdate { OtherColliderLocalId = other.LocalID, Type = CollisionEventUpdateType.CharacterCollisionBegan });
}
return;
}
/// <summary>
/// Called when a change has been posted for touches between one of our prims and an avatar. We must track
/// these touches by shape because the collision detection is sometimes one sided in the case of an avatar
/// touching a prim
/// </summary>
/// <param name="change"></param>
/// <param name="other"></param>
private void ProcessCharacterContactChange(int change, PhysxPrim ourPrim, PhysX.Shape primShape, PhysxCharacter other)
{
if (IsChild && _properties.WantsCollisionNotification)
{
HandleTrackedCharacterContactChange(change, ourPrim, primShape, other);
}
else if (IsChild && !_properties.WantsCollisionNotification)
{
_parentPrim.ProcessCharacterContactChange(change, ourPrim, primShape, other);
}
else if (HasActor && (_properties.WantsCollisionNotification || _properties.ChildrenWantCollisionNotification))
{
HandleTrackedCharacterContactChange(change, ourPrim, primShape, other);
}
}
/// <summary>
/// This message is sent by the character controller when a character "touches" us by its movement
/// </summary>
/// <param name="shape"></param>
/// <param name="character"></param>
/// <param name="collisionEventUpdateType"></param>
internal void OnCharacterContactChangeSync(PhysX.Shape shape, PhysxCharacter character, CollisionEventUpdateType collisionEventUpdateType)
{
if (_collisionGroup == CollisionGroupFlag.PhysicalPhantom)
{
//no collision processing for phantoms
return;
}
PhysxPrim myPrim;
if (_shapeToPrimIndex.TryGetValue(shape, out myPrim))
{
myPrim.ProcessCharacterContactChange(collisionEventUpdateType == CollisionEventUpdateType.CollisionBegan ? 1 : -1, myPrim, shape, character);
}
}
