Weird Mouse behaviour

#1 After the "onMouseDown", I typically store the object in a variable and use the t2dSceneWindow (likely sceneWindow2D in your case) to handle the "onMouseDragged" and "onMouseUp". That way if the mouse moves too far off, it's irrelevant as you will still be over the scene window.

#2 it does that even if the mouse pointer is well within the camera view...it doesn't even have to go outside that boundary...

#3 I know exactly what you mean. What I'm trying to say, without writing all of the code for you, is this:

$heldObject = 0;
function SpriteObject::onMouseDown( %this, %modifier, %worldPos )
{
  $heldObject = %this;
}
function sceneWindow2D::onMouseDragged( %this, %modifier, %worldPos )
{
  if( $heldObject == 0 ) return;
  $heldObject.moveTo( %worldPos );
}
function sceneWindow2D::onMouseUp( %this, %modifier, %worldPos )
{
  if( $heldObject == 0 ) return;
  $heldObject.moveTo( %worldPos );
  $heldObject = 0;
}

That code needs a lot of filling out to be robust, but it's the general idea. (I know there is a good example of drag-and-drop out there, but I can't seem to find it.)

The key difference is that the window handles the dragging behavior, not the object.

#4 this works...thanks a lot!

#5 Cool! Good to hear!