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Question by HolBol · Apr 22, 2010 at 08:44 PM · rigidbodyvelocityspeedmagnitudeaddrelativeforce

Rigidbody magnitude

I've currently got a script that writes rigidbody.velocity.magnitude of an object to a GUI Text. But the speed it prints seems Very unreallistic, like my standard speed ( a constant relative force of 600) comes out as 20 in speed. What do i do to make the speed how it should be?

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Answer by Eric5h5 · Apr 22, 2010 at 09:09 PM

If rigidbody.velocity.magnitude is giving you a result of 20, then that's what it is, you don't do anything. Force isn't speed, it's just force...e.g., using a force of 600 with an object that has a mass of 1 will give you completely different results compared to an object that has a mass of 1000.

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Answer by Molix · Apr 22, 2010 at 09:02 PM

Hard to know what "it should be", but presumably the velocity is in meters/second, so it may seem less than expected, e.g. 20 m/s = 72 kph = 44 mph.

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avatar image e.bonneville · Apr 22, 2010 at 09:17 PM 0
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Actually, the velocity is in meters per frame. For framerate independent motion (meters/second), multiply your force by Time.deltaTime.

avatar image duck ♦♦ · Apr 22, 2010 at 09:50 PM 0
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No, it's not. Velocity (and its magnitude) is in units per second.

avatar image e.bonneville · Apr 22, 2010 at 10:36 PM 0
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Oh, ok. I guess you learn something new every day. I revoted because I was wrong.

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Answer by e.bonneville · Apr 22, 2010 at 08:53 PM

Well, if your results are constantly 1/30 of the force you want to see, you could multiply your result by 30 before printing it. If it's constantly changing, then I can't help you.

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