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Question by Caelorum · Sep 25, 2014 at 11:49 PM · c#sendmessagewarnings

Why is this script not working? (SendMessage)

I have two scripts. One on a wall, another on a ball. I'm trying to access a void from one script, in a different script.

Here is the script with the function:

     public void ResetBall ()
         {
             var rigY = rigidbody2D.velocity.y;
             var rigX = rigidbody2D.velocity.x;
             var traY = transform.position.y;
             var traX = transform.position.x;
             rigY = 0f;
             rigX = 0f;
             traY = 0f;
             traX = 0f;
     
             Invoke("goBall", 0.5f);
         }

And here is the script trying to access it:

 void OnTriggerEnter2D (Collider2D hitInfo) 
     {
         if (hitInfo.name == "Ball")
         {
             var wallName = transform.name;
             gameMan.Score (wallName);
             hitInfo.gameObject.SendMessage ("ResetBall");
 
         }
     
     }


Not going to lie this is all pretty advanced for me, but according to the video i'm watching (who is using javascript), the hitInfo should be able to send a message into the ball, because the ball IS "hitInfo" technically.

All I end up getting are warnings saying that rigy/x, and tray/x are not being used. And the ResetBall function doesn't go through.

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Answer by SilentSin · Sep 26, 2014 at 05:23 AM

 var rigY = rigidbody2D.velocity.y;

and

 rigY = 0f;

Doesn't do what you think it does.

You're getting a copy of the velocity value, then setting the copy to 0. But the velocity isn't affected by the copy. You need to set the velocity directly:

 rigidbody2D.velocity = new Vector2(0, 0);// or "= Vector2.zero";

The same applies to transform.position (using Vector3 instead of Vector2).

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