This post has been dead for a long time, so I guess this is a long shot, but I essentially need the same thing.

I want Ps to be able to drag an image from one part of the screen over to another part of the screen. For example, drag a packet of sugar from the left side of the screen over to a cup of coffee on the right side of the screen (as if adding the sugar to the coffee). I'd need other images present on the screen at the same time that Ps could have selected to drag but didn't (so all images eligible for movement).

I'd ideally like to track the mouse and would need rough RT for the process. Is this possible in MediaLab and/or DirectRT? Thanks!