• Products
  • Solutions
  • Made with Unity
  • Learning
  • Support & Services
  • Community
  • Asset Store
  • Get Unity

UNITY ACCOUNT

You need a Unity Account to shop in the Online and Asset Stores, participate in the Unity Community and manage your license portfolio. Login Create account
  • Blog
  • Forums
  • Answers
  • Evangelists
  • User Groups
  • Beta Program
  • Advisory Panel

Navigation

  • Home
  • Products
  • Solutions
  • Made with Unity
  • Learning
  • Support & Services
  • Community
    • Blog
    • Forums
    • Answers
    • Evangelists
    • User Groups
    • Beta Program
    • Advisory Panel

Unity account

You need a Unity Account to shop in the Online and Asset Stores, participate in the Unity Community and manage your license portfolio. Login Create account

Language

  • Chinese
  • Spanish
  • Japanese
  • Korean
  • Portuguese
  • Ask a question
  • Spaces
    • Default
    • Help Room
    • META
    • Moderators
    • Topics
    • Questions
    • Users
    • Badges
  • Home /
avatar image
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);
 
 }
Comment

People who like this

0 Show 0
10 |3000 characters needed characters left characters exceeded
▼
  • Viewable by all users
  • Viewable by moderators
  • Viewable by moderators and the original poster
  • Advanced visibility
Viewable by all users

1 Reply

  • Sort: 
avatar image
Best Answer

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);
 }
Comment

People who like this

0 Show 1 · Share
10 |3000 characters needed characters left characters exceeded
▼
  • Viewable by all users
  • Viewable by moderators
  • Viewable by moderators and the original poster
  • Advanced visibility
Viewable by all users
avatar image robertbu · Sep 28, 2014 at 10:47 PM 0
Share

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.

Unity Answers is in Read-Only mode

Unity Answers content will be migrated to a new Community platform and we are aiming to launch a public beta on June 13. Please note, Unity Answers is now in read-only so we can prepare for the final data migration.

For more information and updates, please read our full announcement thread in the Unity Forum.

Follow this Question

Answers Answers and Comments

2 People are following this question.

avatar image avatar image

Related Questions

Can someone help me fix my Javascript for Flickering Light? 6 Answers

Setting Scroll View Width GUILayout 1 Answer

Unity3D Ai wont shoot 1 Answer

How to AddForce OverTime? 1 Answer

How to toggle a key for a car to go forward or backward? 1 Answer


Enterprise
Social Q&A

Social
Subscribe on YouTube social-youtube Follow on LinkedIn social-linkedin Follow on Twitter social-twitter Follow on Facebook social-facebook Follow on Instagram social-instagram

Footer

  • Purchase
    • Products
    • Subscription
    • Asset Store
    • Unity Gear
    • Resellers
  • Education
    • Students
    • Educators
    • Certification
    • Learn
    • Center of Excellence
  • Download
    • Unity
    • Beta Program
  • Unity Labs
    • Labs
    • Publications
  • Resources
    • Learn platform
    • Community
    • Documentation
    • Unity QA
    • FAQ
    • Services Status
    • Connect
  • About Unity
    • About Us
    • Blog
    • Events
    • Careers
    • Contact
    • Press
    • Partners
    • Affiliates
    • Security
Copyright © 2020 Unity Technologies
  • Legal
  • Privacy Policy
  • Cookies
  • Do Not Sell My Personal Information
  • Cookies Settings
"Unity", Unity logos, and other Unity trademarks are trademarks or registered trademarks of Unity Technologies or its affiliates in the U.S. and elsewhere (more info here). Other names or brands are trademarks of their respective owners.
  • Anonymous
  • Sign in
  • Create
  • Ask a question
  • Spaces
  • Default
  • Help Room
  • META
  • Moderators
  • Explore
  • Topics
  • Questions
  • Users
  • Badges