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Make friction work with a circle collision mask

  • Every time I use a circle collision mask, friction is completely ignored. I tried reducing bounciness to 0 (and friction to 100, even when I suppose anything above 1 will be 1) in both objects, but the ball completely ignores the friction.

    I would do a polygon collision mask, but I want a very big circle interacting, and that just wouldn't work.

    dl.dropbox.com/u/41192999/friction0.capx <- capx demonstrating.

    PS: I don't know if I'm doing something wrong, otherwise I suppose it's a bug (because a ball should stop down a hill if both have such friction!)

  • I had to disable your events as I don't see the issue as it was.

    The yellow ball is rolling down the slope since it has a high friction. If the friction were zero then the ball would slip down the slope. Now if you give the ball a high friction and set "Prevent rotation" to yes then the ball won't go down the slope.

    Does that help or am I missing the issue?

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  • OMG, sorry, I kept on editing the same file, let me revert to original... But shouldn't friction prevent rotation? I want it to rotate, but to stop quickly...

    I'm going to try what you said and see what happens (and save it in another file, sorry, I reverted this to the original).

    Edit:

    What I'm really trying to do is make two balls (rotating normally) attract to each other, and once they're in contact, the bigger ball can take the other around. Like a planet carries things and not let them stay in the same point of space.

  • Friction does not prevent rotation, it only keep the object from sliding on the object it's touching.

    You could apply a torque in the opposite direction as the angular velocity.

    +Every Tick

    ---Sprite2 | Apply Physics torque -0.1*Sprite2.Physics.AngularVelocity

  • Thanks! I got it working n__n!

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