Move Rigidbody2D while mouse drag

You script would probably look something like this (it depends on the precise functionality you're looking for):

#pragma strict private var moveWithMouse : boolean = false; private var lastMousePosition : Vector3; function Update() { var changeInMousePosition : Vector3 = Vector3(0,0,0); if (lastMousePosition != null) { changeInMousePosition = Input.mousePosition-lastMousePosition; } lastMousePosition = Input.mousePosition; if (moveWithMouse) { transform.position += Camera.main.ScreenToWorldPoint(changeInMousePosition) - Camera.main.ScreenToWorldPoint(Vector3(0,0,0)); } } function OnMouseDown() { moveWithMouse = true; } function OnMouseUp() { moveWithMouse = false; } 

Here are all the documentation pages that explain the fancy parts of the code above.

• http://docs.unity3d.com/ScriptReference/MonoBehaviour.OnMouseDown.html
• http://docs.unity3d.com/ScriptReference/MonoBehaviour.OnMouseUp.html
• http://docs.unity3d.com/ScriptReference/Input-mousePosition.html
• http://docs.unity3d.com/ScriptReference/Camera.ScreenToWorldPoint.html

If there's anything in the code that's new to you and not covered in the documentation pages (such as Vector3, Transform, the Update function etc..) then you'd benefit from visiting a beginner's guide to unity before attempting a project.

https://unity3d.com/learn/tutorials/modules/beginner/live-training-archive/coding-for-the-absolute-beginner

In order to use my script, you must:

• Create a GameObject (the one you want to be draggable)
• Add a sprite renderer to it (and select the image you want for it)
• Add a 2d collider (polygon2d for precision, circle2d or box2d for speed)
• Create a new script and add it to the GameObject

Learning how to use Unity's editor might even be more essential than the programming itself when it comes to creating and customizing your own game, so if you don't know how to do the things above (create GameObject, and add Components) you should refer to a beginners guide to the Unity editor.

Here's a set of tutorial pages about Unity's editor: http://docs.unity3d.com/Manual/UnityBasics.html