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Question by shan360 · Jan 26, 2017 at 11:37 AM · c#rigidbodyvector3rigidbody.addforce

How to change Force direction immediately?

Hi, I am trying to add a force on rigidBody by using a vector I am getting from the user's mouse position: up will change the vector to be:

 vector+=Vector3.up  * MOVEMENT_SPEED;

And the same thing with left,right,down,forward and backward.

The problem is that there is a small delay every time I change the position. For example, if I go up and then want to go down,after moving the mouse down it will first go up for a bit and only then down.

I am using:

 void FixedUpdate()
 {
     rb.AddForce(K * vector);//K=Const
 }    

Is there a way to change the force direction immediately when I change the vector's position?

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Answer by karl_jones · Jan 26, 2017 at 11:56 AM

Try setting the velocity directly https://docs.unity3d.com/ScriptReference/Rigidbody-velocity.html

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avatar image CaseyHofland · May 19, 2019 at 07:49 PM 1
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Literally the first thing the docs say is: "In most cases you should not modify the velocity directly, as this can result in unrealistic behaviour."

Perhaps the docs have changed in 2 years time...

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