There is no Rigidbody attached to the Ball (Pong Game)

Unity Engine
1

Hey everyone,
My problem: I have a script (Not my own) which tries to access a 3D Rigidbody but my problem is that my game is 2D so i am unable to switch to a 3D rigidbody without causing problems. So i was wondering if a kind soul could help me fix this so it stops trying to access a 3D rigidbody.
P.S i tried changing each “rigidbody…” to “rigidbody2D…” but it was unsuccessful.

#pragma strict

var cSpeed:float = 10.0;
var sFactor:float = 10.0;
//Two variables to hold our scores
static var playerScore:int = 0;
static var enemyScore:int = 0;

function Start ()
{
    rigidbody.AddForce(5,0,0);
}

function Update ()
{
    var cvel = rigidbody.velocity;
    var tvel = cvel.normalized * cSpeed;
    rigidbody.velocity = Vector3.Lerp(cvel,tvel,Time.deltaTime * sFactor);
   
    //Check the right bounds
    if(transform.position.x > 8.7)
    {
        playerScore++;
        transform.position.x = 0;
        transform.position.y = 0;
    }
    //Check the left bounds
    if(transform.position.x < -6.79)
    {
        enemyScore++;
        transform.position.x = 0;
        transform.position.y = 0;
    }
}
2

I think your idea was basically right. the rigidbody would be a vector2 instead of a vector3, so you would need to change that on line 18. Line 11 should have only the first 2 arguments.

3

To add to what @fire7side said, you’ve got the right idea. Make everything Vector2’s and ensure you’re using rigidbody2D instead of rigidbody.

Further more, ensure that there is in fact a Rigidbody2D component attached to your ball object, in the inspector. Or even inside the script, say in the Start() function:

if (!rigidbody2D) {
     gameObject.AddComponent(Rigidbody2D);
}
//Since it's a member variable, rigidbody2D will now
//automatically be mapped to the newly added component,
//without having to assign it
4

Hello,
you would need to change that on line 11. Line 11 should have only the first 2 arguments or vector2 and direction,like this.

rigidbody2D.AddForce(Vector2.up);

change line 16.
var cvel = rigidbody2D.velocity;

and also change Line 18, vector2.Lerp instead of a vector3.Lerp and ensure you’re using rigidbody2D instead of rigidbody,attachment of rigidbody component should be rigidbody2D.

rigidbody2D.velocity = Vector2.Lerp(cvel,tvel,Time.deltaTime * sFactor);

Thanks

5

Thanks for the help guys it is fixed.