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Question by ucefemad · Sep 28, 2014 at 09:56 PM · javascriptrigidbodycarforce

How to set max speed for this car ?

I made a code that applies a relative force to a rigidbody, I Calculate it's speed but it keeps increasing as long as I'm pressing the key, I want to add a MaxSpeed to this car so for example when it reaches 120, it keeps running on the same speed until I stop pressing the key, this is my code.

 function Update () {
 
 var enginePower = 99000;
 var brakePower = 40000;
 var speed = rigidbody.velocity.magnitude;
 var maxSpeed = 120;
 
 if(Input.GetKey(KeyCode.UpArrow)){
 gameObject.rigidbody.AddRelativeForce(0,0,enginePower);
 };
 
 if(Input.GetKey(KeyCode.DownArrow)){
 gameObject.rigidbody.AddRelativeForce(0,0,-brakePower);
 };
 
 Debug.Log(speed);
 
 }
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Answer by robertbu · Sep 28, 2014 at 09:57 PM

This will do the job:

 function FixedUpdate() {
     rigidbody.velocity = Vector3.ClampMagnitude(rigidbody.velocity, 120.0);
 }
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avatar image robertbu · Sep 28, 2014 at 10:47 PM 0
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So how is it 'not' working? Can you provide the complete script? Change your Update() in your code to FixedUpdate() and integrate the line of code I suggest.

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