reflection fails by collision with small velocity

Unity Engine
1

I recently tried to make a Pong like game and I noticed that the Ball doesn´t refelct from the Top/bottom Wall if the Y-velocity of the Ball is smaller or equal to 1.It just slides along the Collider setting the Yvelocity to 0. I tried a similiar collision in a new project with less code, where i just let the ball collide with a Boxcollider, but the same Problem occured.

I just recently started conding and I´m not verry experienced with Unity so I would be thankful for every help.

I don´t think that the problem has anything to do with the Code but just in case I attached it here

var Yspeed : float;
var Xspeed : float;
var projectile : Transform;

function Fire () {
    GetComponent.<Rigidbody2D>().velocity.y = 0;
    GetComponent.<Rigidbody2D>().velocity.x = -Xspeed;
    GetComponent.<Rigidbody2D>().velocity.y = Yspeed;
    projectile.position.x = 10;
    projectile.position.y = (-Yspeed/Xspeed)*10 + 7.86;
    yield WaitForSeconds(5);
    Start();
}

function Start () {
    Fire();
}
2

Use Physics2D.velocityThreshold to control this. You can change the setting via script or go into the 2D physics settings and change it there.

Note that if you do reduce this, it can also reduce the ability of objects to stop as tiny bounces keep bouncing. This is more important when you’re doing stuff like stacking objects etc. Also that would depend on the linear and angular sleep tolerances, both of which you can find in the 2D physics settings.

3

Thank you verry much :smile: I should try to learn more about the basic settings so something like that won´t happen again.