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This question was closed May 28, 2014 at 12:23 AM by meat5000 for the following reason:

The question is answered, right answer was accepted

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10
Question by csgeorge · Sep 25, 2013 at 09:03 PM · javascriptmovementrigidbody

Remove Force from Moving Object

I have a rolling ball that the player can move around, which I'm doing using rigidbody.AddForce. I want to include a button (Left Shift, in my current code) that stops the ball completely, but am running into an issue. The ball stops still the moment the button is pressed, but afterward will continue rolling just as it was before. I've tried adjusting the ball's physics material friction and the AddForce Force Mode, neither seem to make any difference.

Can anyone help me to get the ball to halt completely, and not move again until the player's next input?

 function FixedUpdate ()
 {
     if(Input.GetKeyDown(KeyCode.LeftShift))
         rigidbody.velocity = Vector3.zero; 
     
     if(Input.GetKey("up"))
         rigidbody.AddForce(0,0,speed); 
         
     if(Input.GetKey("down"))
         rigidbody.AddForce(0,0,-speed); 
     
     if(Input.GetKey("right"))
         rigidbody.AddForce(speed,0,0);
         
     if(Input.GetKey("left"))
         rigidbody.AddForce(-speed,0,0);
 }
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Answer by robertbu · Sep 26, 2013 at 01:21 AM

You also need to set the angularVelocity to zero:

 if(Input.GetKeyDown(KeyCode.LeftShift)) {
    rigidbody.velocity = Vector3.zero;
    rigidbody.angularVelocity = Vector3.zero; 
    }
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avatar image csgeorge · Sep 26, 2013 at 05:31 AM 0
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Worked like a charm, thanks!

avatar image WSllc · May 28, 2014 at 12:19 AM 0
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I also had this problem and overlooked the angular velocity. Thanks robertbu! You've helped me too!

avatar image tapticc · Jun 16, 2014 at 06:59 PM 0
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Sorted my random sliding of my car as well, cheers!

avatar image zark · Feb 01, 2015 at 12:55 AM 0
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rigidbody.angularVelocity = Vector3.zero; > this does not work though i used rigidbody.angularVelocity = 0f;

avatar image Zoelovezle zark · Dec 21, 2015 at 10:10 AM 0
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It might be because of update. Since csgeorge said it worked :)

avatar image VaskeDaGame · Jun 05, 2018 at 09:54 AM 0
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can you help me as well? i want my player to stop the forces when he moves right or left. but if hes in the air that makes him float. i want to only stop his velocity on X axis. so that it stays the same on the Y. i tried putting RigidBody.Velocyty.x but it gives me an error. is there a way?

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