Stop momentum of a ball

Question

Hello, well like the title says, I'm making a simple game, and I want to stop the momentum of a ball.

When I make the input to move the ball simply goes forward, and when it respawns the momentum stays in a loop, like "Portal" game, I did a research of how to do it and didn't find anything useful

Here's my code (C#):

 using UnityEngine;
 using System.Collections;
 
 public class PlayerMovement : MonoBehaviour 
 {
 
     public float speed;
     private Vector3 spawn;
 
 
     void Start()
     {
         spawn = transform.position; 
     }
 
     void FixedUpdate()
     {
         float moveHor = Input.GetAxis ("Horizontal");
         float moveVert = Input.GetAxis ("Vertical");
 
         Vector3 move = new Vector3 (moveHor,0.0f, moveVert);
 
         rigidbody.AddForce (move * speed * Time.deltaTime);
 
         if(transform.position.y <= -4)
         {
             transform.position = spawn;
         }
     }

}

I did try the code

rigidbody.velocity = Vector3.zero; rigidbody.AddForce = Vector3.zero; rigidbody.angularDrag = Vector3.zero;

I did try making more variables, and same results

It didn't work

Thanks for reading

Answer 1

Answer by _Yash_ · Oct 22, 2014 at 07:32 AM

yes doing

 rigidbody.velocity = Vector3.zero;
 rigidbody.angularVelocity = Vector3.zero;

can fix it BUT here your input is adding force so make sure there is no input when it resets. You can also try disabling userInput for a couple of seconds after reset to see if it actually resets.

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NAYIR55 · Oct 22, 2014 at 07:34 AM 0

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I did try those too, but where do I put those lines??

Dimling · Oct 22, 2014 at 07:56 AM 1

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I tested your code in Unity right now, and for me it works with this FixedUpdate() $$anonymous$$ethod that other people (for instance Yash) has suggested.

 void FixedUpdate()
     {
         float moveHor = Input.GetAxis ("Horizontal");
         float moveVert = Input.GetAxis ("Vertical");
         
         Vector3 move = new Vector3 (moveHor,0.0f, moveVert);
         
         rigidbody.AddForce (move * speed * Time.deltaTime);
         
         if(transform.position.y <= -4)
         {
             transform.position = spawn;
             rigidbody.velocity = Vector3.zero;
             rigidbody.angularVelocity = Vector3.zero;
         }
 
     }

If this is not working for you, do you have any other code in your project that might affect the current code?

Btw: you have to let go of the key when the ball is falling, if you keep pressing the key the ball, with this code, will of course be given force all the time and keep rolling.

NAYIR55 · Oct 22, 2014 at 08:10 AM 0

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After some time I could write those lines, and yes, I added some code after I posted this thread, thanks for the help

Stop momentum of a ball

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