private void DoShowInfo()
{
Vector3 pos, normal;
CollidableObject pickedObject = mouseManager.GetPickedObject(cameraManager, 10, 1000, out pos, out normal) as CollidableObject;
//does this object return true in the predicate
if (collisionPredicate(pickedObject))
{
//get info about the health value of the pickup
int value = (pickedObject as PickupCollidableObject).Value;
System.Diagnostics.Debug.WriteLine(pickedObject.ID + ", " + value);
}
}
private void DoLift()
{
if (!bCurrentlyPicking)
{
camera = cameraManager.ActiveCamera;
currentPickedObject = mouseManager.GetPickedObject(cameraManager,
pickStartDistance, pickEndDistance, out pos, out normal) as CollidableObject;
if (currentPickedObject != null)
{
Vector3 vectorDeltaFromCentreOfMass = pos - currentPickedObject.Collision.Owner.Position;
vectorDeltaFromCentreOfMass = Vector3.Transform(vectorDeltaFromCentreOfMass, Matrix.Transpose(currentPickedObject.Collision.Owner.Orientation));
cameraPickDistance = (camera.Transform3D.Translation - pos).Length();
//remove any controller from any previous pick-release
objectController.Destroy();
damperController.Destroy();
currentPickedObject.Collision.Owner.SetActive();
//move object by pos (i.e. point of collision and not centre of mass)
objectController.Initialise(currentPickedObject.Collision.Owner, vectorDeltaFromCentreOfMass, pos);
//dampen velocity (linear and angular) on object to Zero
damperController.Initialise(currentPickedObject.Collision.Owner, ConstraintVelocity.ReferenceFrame.Body, Vector3.Zero, Vector3.Zero);
objectController.EnableConstraint();
damperController.EnableConstraint();
//we're picking a valid object for the first time
bCurrentlyPicking = true;
}
//if we have an object picked from the last update then move it according to the mouse pointer
if (objectController.IsConstraintEnabled && (objectController.Body != null))
{
// Vector3 delta = objectController.Body.Position - this.camera.Transform.Translation;
Vector3 direction = mouseManager.GetMouseRay(camera).Direction;
cameraPickDistance += mouseManager.GetDeltaFromScrollWheel() * 0.1f;
//set the desired world position
objectController.WorldPosition = camera.Transform3D.Translation + cameraPickDistance * direction;
objectController.Body.SetActive();
}
}
else //releasing object
{
//release object from constraints and allow to behave as defined by gravity etc
objectController.DisableConstraint();
damperController.DisableConstraint();
}
}
