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Question by Manco Capac · Feb 02, 2013 at 01:25 PM · rigidbodyvelocitystoreframe

Get previous velocity of Rigidbody?

Hi,

I know how get the velocity of a Rigidbody, but I need it's velocity which was a second/some frames ago.... I need this so that my car gets damaged if it hits sth at a certain speed, to receive a dent.

This is hard to explain..... I hope I could describe properly. (sry for my poor english)

I just need to store the velocity for a few frames.

I'm scripting in JS.

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avatar image Owen-Reynolds · Feb 02, 2013 at 06:55 PM 0
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Are you using OnCollisionEnter? If so, collision.relativeVelocity might help.

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Answer by OWiz · Feb 02, 2013 at 04:30 PM

Then store the velocity for a few frames.

Calculate and store the velocity, then make a counter and wait a few frames before you collect the velocity again.

 if(frames>3){
    GetVelocity();
    frames=0;
 }else{
    frames++'
 }
 
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avatar image FL · Feb 02, 2013 at 07:35 PM 1
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There's no need to count manually, uses something like if(Time.frameCount%5==0) to save the velocity for every 5 frames.

avatar image Owen-Reynolds · Feb 03, 2013 at 03:35 PM 1
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When it hits, the last saved velocity might be last frame, or up to 5 frames ago. It's like each bump will randomly pick from the previous 5 speeds.

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