public void DoPhysicsPropertyUpdate(bool UsePhysics, bool isNew)
{
if (IsJoint())
{
if (UsePhysics)
{
// by turning a joint proxy object physical, we cause creation of a joint in the ODE scene.
// note that, as a special case, joints have no bodies or geoms in the physics scene, even though they are physical.
PhysicsJointType jointType;
if (IsHingeJoint())
{
jointType = PhysicsJointType.Hinge;
}
else if (IsBallJoint())
{
jointType = PhysicsJointType.Ball;
}
else
{
jointType = PhysicsJointType.Ball;
}
List<string> bodyNames = new List<string>();
string RawParams = Description;
string[] jointParams = RawParams.Split(" ".ToCharArray(), System.StringSplitOptions.RemoveEmptyEntries);
string trackedBodyName = null;
if (jointParams.Length >= 2)
{
for (int iBodyName = 0; iBodyName < 2; iBodyName++)
{
string bodyName = jointParams[iBodyName];
bodyNames.Add(bodyName);
if (bodyName != "NULL")
{
if (trackedBodyName == null)
{
trackedBodyName = bodyName;
}
}
}
}
SceneObjectPart trackedBody = m_parentGroup.Scene.GetSceneObjectPart(trackedBodyName); // FIXME: causes a sequential lookup
Quaternion localRotation = Quaternion.Identity;
if (trackedBody != null)
{
localRotation = Quaternion.Inverse(trackedBody.RotationOffset) * this.RotationOffset;
}
else
{
// error, output it below
}
PhysicsJoint joint;
joint = m_parentGroup.Scene.PhysicsScene.RequestJointCreation(Name, jointType,
AbsolutePosition,
this.RotationOffset,
Description,
bodyNames,
trackedBodyName,
localRotation);
if (trackedBody == null)
{
ParentGroup.Scene.jointErrorMessage(joint, "warning: tracked body name not found! joint location will not be updated properly. joint: " + Name);
}
}
else
{
if (isNew)
{
// if the joint proxy is new, and it is not physical, do nothing. There is no joint in ODE to
// delete, and if we try to delete it, due to asynchronous processing, the deletion request
// will get processed later at an indeterminate time, which could cancel a later-arriving
// joint creation request.
}
else
{
// here we turn off the joint object, so remove the joint from the physics scene
m_parentGroup.Scene.PhysicsScene.RequestJointDeletion(Name); // FIXME: what if the name changed?
// make sure client isn't interpolating the joint proxy object
Velocity = Vector3.Zero;
AngularVelocity = Vector3.Zero;
Acceleration = Vector3.Zero;
}
}
}
else
{
if (PhysActor != null)
{
if (UsePhysics != PhysActor.IsPhysical || isNew)
{
if (PhysActor.IsPhysical) // implies UsePhysics==false for this block
{
if (!isNew)
ParentGroup.Scene.RemovePhysicalPrim(1);
PhysActor.OnRequestTerseUpdate -= PhysicsRequestingTerseUpdate;
PhysActor.OnOutOfBounds -= PhysicsOutOfBounds;
PhysActor.delink();
if (ParentGroup.Scene.PhysicsScene.SupportsNINJAJoints && (!isNew))
{
// destroy all joints connected to this now deactivated body
m_parentGroup.Scene.PhysicsScene.RemoveAllJointsConnectedToActorThreadLocked(PhysActor);
}
// stop client-side interpolation of all joint proxy objects that have just been deleted
// this is done because RemoveAllJointsConnectedToActor invokes the OnJointDeactivated callback,
// which stops client-side interpolation of deactivated joint proxy objects.
}
if (!UsePhysics && !isNew)
{
// reset velocity to 0 on physics switch-off. Without that, the client thinks the
// prim still has velocity and continues to interpolate its position along the old
// velocity-vector.
Velocity = new Vector3(0, 0, 0);
Acceleration = new Vector3(0, 0, 0);
AngularVelocity = new Vector3(0, 0, 0);
//RotationalVelocity = new Vector3(0, 0, 0);
}
PhysActor.IsPhysical = UsePhysics;
// If we're not what we're supposed to be in the physics scene, recreate ourselves.
//m_parentGroup.Scene.PhysicsScene.RemovePrim(PhysActor);
/// that's not wholesome. Had to make Scene public
//PhysActor = null;
if ((Flags & PrimFlags.Phantom) == 0)
{
if (UsePhysics)
{
ParentGroup.Scene.AddPhysicalPrim(1);
PhysActor.OnRequestTerseUpdate += PhysicsRequestingTerseUpdate;
PhysActor.OnOutOfBounds += PhysicsOutOfBounds;
if (_parentID != 0 && _parentID != LocalId)
{
if (ParentGroup.RootPart.PhysActor != null)
{
PhysActor.link(ParentGroup.RootPart.PhysActor);
}
}
}
}
}
m_parentGroup.Scene.PhysicsScene.AddPhysicsActorTaint(PhysActor);
}
}
}
