Trying to drag an object with touch using Rigidbody2D.MovePosition

Question

Hello

I have this spirit object which i want to move by dragging (dragging the object to move it on screen) using Rigidbody2D.MovePosition.

I am quite newb in unity . so maybe i missed something i do not know.

Whatever i tried doesn't make the object move by touch. The object is Rigidbody2D with Box 2d collider. Mass is set to 10. Liner drag is 0. gravity Scale is 0.01. I tried with is Kinamtic on or off.

What i have tried:

 private var speed : Vector2 = Vector2 (3, 0);

 function FixedUpdate () {
 if (Input.touchCount > 0 && Input.GetTouch(0).phase == TouchPhase.Moved) {
 rigidbody2D.MovePosition(rigidbody2D.position + speed * Time.deltaTime);}
 }

Also, does MovePosition is based on Rigidbody2d Physics? I can't manage to make the object move with touch.. I am using Unity version 4.5.

Any help would be appreciated!

Answer 1

Answer by RakshithAnand · Jul 01, 2014 at 09:58 AM

Try this instead of using rigidbody2D.MovePosition:

 float speed = 2f;
 if(Input.touchCount > 0)
 {
     Touch touch = Input.GetTouch(0);
     Vector3 touchpos = Camera.main.ScreenToWorldPoint(touch.position);
     
     yourSpriteObject.transform.position = Vector3.MoveTowards(yourSpriteObject.transform.position, touchpos, Time.deltaTime * speed);
 }

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Trying to drag an object with touch using Rigidbody2D.MovePosition

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