Dragging to Launch

Hi, I am trying to make my (in this example) ball be able to be launched. The way I want to do this is the user drags the opposite way they want the ball to fling. They need some indication, like if an arrow that gets longer the further back they pull. I also need this to have a limit to how far they can drag.
Can somebody please help? [import]uid: 123066 topic_id: 25978 reply_id: 325978[/import]

can nobody help? :frowning: [import]uid: 123066 topic_id: 25978 reply_id: 105458[/import]