how to set a velocity on a rigidbody based on its rotation;

Question

In my project it Instantiates a gameobject at a random rotation, then it needs to set its velocity so it goes forward no matter what direction its facing, is there something like local velocity I can use?

Answer 1

Answer by N-8-D-e-v · Aug 27, 2020 at 11:05 PM

You can do some simple vector math, first, get a vector3 with the direction of the gameobject's transform like so

 Vector3 dir = transform.eulerAngles;

Then, normalize it to get a directional vector, I recommend that you watch this if you don't already understand normalization

 dir = dir.normalized;

then finally, just apply that to your velocity, with a float as the scalar (think of the scalar as your speed)

 float speed = 10;
 rb.velocity = dir * speed;

And there you have it! If you have any questions on this or anything else really, don't hesitate to ask

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how to set a velocity on a rigidbody based on its rotation;

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