The Game Object Drag Enter Event.
This event is dispatched by an interactive Game Object if a pointer drags it into a drag target.
Listen to this event from a Game Object using:
Note that the scope of the listener is automatically set to be the Game Object instance itself.
To receive this event, the Game Object must have been set as interactive and enabled for drag. See GameObject.setInteractive for more details.
The Pointer responsible for triggering this event.
The drag target that this pointer has moved into.