Use Screen Pan to execute the next node when someone moves their finger on the device screen over 30 pixels. Screen Pan is in the Event category.
Here is an example of the Position coordinates for Screen Hold.
|Next||Exec||Execute the next node when the finger is moving on the device screen|
|Offset||Vec2||The distance between the start position and the moving position of the finger on the device screen|
|Position||Vec2||The 2D position of the finger on the device screen|
This demo shows how to use Screen Pan to control the position of the sphere in real-time.
Move this demo a little bit further and use the offset property of Screen Pan to get the distance you move from the starting point. Apply this value to scale the sphere you are controlling now.