Friction in a circle doesn't work

Cesar

Hello Guys,

I am practicing with Box2d basics example.

I apply a linear impulse to the ball:

--create ball local ball = self:ball(100, 100) self:addEventListener(Event.TOUCHES_END, function(event) x,y = ball:getPosition() ball.body:applyLinearImpulse(200, 0, x,y) end, self)

And the ball body friction doesn't work. The ball slides on the bottom without stopping until hitting the left or right wall.

I have tested with rectangles bodies and the friction worked fine. So I suspect of circle body.

Any idea?

Thank you.

dreiko65

Have you tried to increase the friction of your circle?

ar2rsawseen

you mean ball slides on the bottom without stopping until hittin the wall?
or ball is in the air?

Cesar

Yes, I have increased the friction. No effect.

I mean, ball slides on the bottom without stopping until hitting the wall.

totebo

It may be that the ball is rolling and therefore not slowing down. Try setting the b2.Body:setAngularDamping value to prevent the body from rotating freely.

Cesar

Yes, it worked !!!.

I don't understand AngularDamping yet, but I will study it later.

Thank you very much.

ar2rsawseen

@Cesar it dampens rotation, so you won't rotate indefinitely but eventually stop