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Question by James Ser · Jun 18, 2011 at 10:21 PM · rigidbody physics

Damping the bounciness of a rigidbody fall

Hi all lovely unity ppl,

This seems to have a easy solution but i just couldn't find it. I need to damp a bounciness of a rigidbody fall. There are 2 levels of 3d letters stack on top of each other that I added rigidbody to via script and allow them to fall. I added force so that they will fall at a faster speed. I want them to remain stacked on top of each other but the moment they landed on the ground. They bounce off each other. and can't read the type anymore (which i don't want it to happen).

Is this something got to do with physic materials? Please assist. Appreciate your help guys.

Rdgs, Jser

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avatar image Chris D · Jun 18, 2011 at 10:35 PM 0
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what kind of physics material do you have applied to your objects, if any? do they have to remain separate from each other for some reason, or could they be grouped in a parent/child relationship?

avatar image James Ser · Jun 19, 2011 at 02:33 AM 0
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The letters have to be separated as I need them to be able to dragged around in different parts. I've tried using a physics material that has max friction, but it doesn't seems to work. What else can I do? Appreciate your help. Thanks. :),

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Answer by Chris D · Jun 19, 2011 at 02:44 AM

I have two possible solutions:

  1. Fake the physics on the way down. Turn the rigidbodies to kinematic and just script the transformations instead. Once they're down, turn the physics back on.

  2. Or, temporarily group the letters together until they're settled, then break their association. It'd be easy enough to do through scripting (parent/unparent) but, again, may or may not satisfy what you need them to do.

Either way, have a temporary change in how you handle the rigidbodies.

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avatar image James Ser · Jun 19, 2011 at 11:53 AM 0
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Thanks for your suggestions Chris.

I used iTween to animate my letters and onComplete, run a function to add rigidbody to my letters and it sort of works. Thanks again ;)

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