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;
}
private void ProcessContactChangeLocally(int change, PhysxPrim ourPrim, PhysxPrim other)
{
int current;
if (!_touchCounts.Value.TryGetValue(other, out current))
{
current = 0;
}
int newTotal = Math.Max(current + change, 0);
if (newTotal == 0 && current == 0)
{
//no change
return;
}
//m_log.DebugFormat("Contact Change: This: {0}, Other: {1}, Chg: {2}, Tot: {3}", this.SOPName, other.SOPName, change, newTotal);
if (newTotal == 0 && change < 0)
{
//we've lost all contact with this prim, notify of collision_end
//NOTE: We supply the other collider's UUID here just in case the prim has been deleted
ourPrim.SendCollisionUpdate(new CollisionEventUpdate { OtherColliderLocalId = other._localId, OtherColliderUUID = other._uuid, Type = CollisionEventUpdateType.CollisionEnded });
_touchCounts.Value.Remove(other);
other.OnDeleted -= new Action<PhysxPrim>(other_OnDeleted);
_primsBeingWatchedForDeletes.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.CollisionBegan });
other.OnDeleted += new Action<PhysxPrim>(other_OnDeleted);
_primsBeingWatchedForDeletes.Value.Add(other);
}
_touchCounts.Value[other] = newTotal;
return;
}