Lifting/grabbing objects (2D)

I want to lift an object in 2D space, be able to move it around, and release at will. BUT also the player should not be able to stand on it while you're holding it.

I've been struggleing with this for a while and I can't figure out how to acomplish this...

This is my small script for seeing if the object is grabbed, i.e. picked up and about to be moved:

Code (CSharp):

1. private bool isGrabbed = false;
2.  
3. void OnMouseDown() {
4.     Debug.Log ("You grabbed " + name + "!");
5.  
6.     isGrabbed = true;
7. }
8.  
9. void Update() {
10.     if (!Input.GetMouseButton (0) && isGrabbed) {
11.  
12.         Debug.Log("You released " + name + "!");
13.  
14.         isGrabbed = false;
15.     }
16. }

Works all fine and well.
Now on to the moving of the object...

Code (CSharp):

1. void FixedUpdate() {
2.     if (isGrabbed) {
3.  
4.         // Get the mouse location on screen
5.         Vector2 rawMouse = Input.mousePosition;
6.  
7.         // Get the mouse location in the world
8.         Vector2 mouse = Camera.main.ScreenToWorldPoint (rawMouse);
9.  
10.         Vector2 deltaDist = mouse - new Vector2(transform.position.x, transform.position.y);
11.         Vector2 direction = deltaDist.normalized;
12.  
13.         Vector2 force = direction * speed;
14.  
15.         rigidbody2D.AddForce(force);
16.  
17.     }
18. }

Where speed (from row 13) is a public float variable.

Now I get some odd behaviour with this like the object I'm holding makes a tiny orbit around the mouse.
If I could get rid of that I think the rest would be fairly simple to solve.

I think to make it that the player can't stand on the object while I'm holding it I can just increase the players mass right?

 

Use a spring joint

http://docs.unity3d.com/Manual/class-SpringJoint2D.html

There's a DragRigidbody script that comes with Unity. Perhaps you could port that to 2D?

 

Thanks for the help, a bit late reply but I ended up going for a different solution:

Code (CSharp):

1. rbody.AddForceAtPosition(deltaDist * speed,transform.position)

It kinda works as I want it to, and will have to do.

 

So did you replace the first line or add it?

 

That line was placed inside the if statement within the FixedUpdate method, instead of

Code (CSharp):

1. rigidbody2D.AddForce(force);

So yes, replaced.

 

Smart marketing and yes very nice with some fresh knowledge to an old thread.

 

Yes absolutely! I was not bashing, but instead thinking it was clever to run around in forums and suggesting your prepared solution instead of others having to manually find it through GitHub or whatev