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Question by sandhillceltic · Feb 02, 2014 at 09:44 PM · javascriptrigidbodytroubleshootingjavascript-specific

Why is rigidbody.AddRelativeTorque not working?

I am trying to write a script that will add rotation (torque) to the rigidbody of an object. I thought this would be easy, but it has proved to be quite problematic. This is what I have-

 function Update () {
     if(Input.GetKey("e")){
         rigidbody.AddRelativeTorque (Vector3.up * 10);
     }
 }





What am I doing wrong? I'm not new to Javascript, and this script is VERY straight and linear. It IS applied to my object, and I am pressing E. Here is my inspector-

alt text

This is really annoying.

Thank you

test.png (46.6 kB)
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avatar image Eric5h5 · Feb 04, 2014 at 09:22 PM 0
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You need to use FixedUpdate for physics functions, since this code will fail to work correctly when the framerate varies.

avatar image Dblfstr · Feb 04, 2014 at 09:36 PM 0
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If the thing you are trying to spin is sitting on the ground, the friction of the ground will prevent it from spinning. Try adding a physics material to your object, or trying to spin it when it is not resting on the ground.

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Answer by xt-xylophone · Feb 03, 2014 at 01:44 AM

Everything looks ok. Put the angular drag to Zero to make sure as well, that number might be too low.

Try using:

 if(Input.GetKey(KeyCode.E)){

I've never done it your way and can't test either way until later tonight but Ive used my way A LOT and its 100% correct. If that ^ doesnt work there must be something else we don't know.

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avatar image sandhillceltic · Feb 03, 2014 at 01:58 AM 1
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thanks, I will try that. I debugged the GetKey("e"), so I know that's not the problem

avatar image xt-xylophone · Feb 04, 2014 at 09:20 PM 0
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Try turning gravity off, it cant rotate while on the ground, too much friction. Also try it with your animator turned off.

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