• 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
0
Question by solidsnake530 · Feb 09, 2017 at 07:56 AM · c#instantiaterepeatroad

Instantiate an object on the end of another object continuously (C#)

Hi,

I'm trying to get a road to instantiate in blocks on a button click. The road blocks are 1000 units long.

 public class StraightRoadSpawn : MonoBehaviour {
 
     public GameObject StraightRoad;
     public Transform[] spawnpoints;
     public Button StraightRoadButton;
     public GameObject RoadSpawnPoint;
 
     // Use t$$anonymous$$s for initialization
     void Start()
     {
         Button srbtn = StraightRoadButton.GetComponent<Button>();
         srbtn.onClick.AddListener(Spawn); // just the button for the road, t$$anonymous$$s works
     }
 
     // Update is called once per frame
     void Spawn()
     {
         Vector3 localOffset = new Vector3(0, 0, 1000); //offset for first road block
         Vector3 spawnPosition = StraightRoad.transform.position + localOffset; 
         Instantiate(StraightRoad, spawnPosition, transform.rotation);  //instantiate first new block, t$$anonymous$$s works fine
         Vector3 newRoadSpawnPosition = RoadSpawnPoint.transform.position;
         newRoadSpawnPosition.z = RoadSpawnPoint.transform.position.z + 1000; //trying to create a new point of instantiation for the road 1000 units along from the previous one
         Debug.Log("Straight Road spawned.");
     }
 
 
 }
 

My issue here is that after the first new block, the road instantiates inside itself. I'm sure the solution is pretty obvious but I'd appreciate a push in the right direction.

The reason I'm trying to do it like t$$anonymous$$s is to have different kinds of road blocks to choose from, corners and $$anonymous$$lls and such, that the user can control w$$anonymous$$le watc$$anonymous$$ng someone else drive on them.

Comment
Add comment
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

2 Replies

· Add your reply
  • Sort: 
avatar image
1
Best Answer

Answer by Chikari · Feb 09, 2017 at 10:06 AM

The problem is that your new point of instantiation is assigned in a scope that disappears after Spawn() returns. That variable newRoadSpawnPosition is never used. The solution is to store the current offset outside of the Spawn() scope, so that it is not lost when Spawn() finishes.

  public class StraightRoadSpawn: MonoBehaviour {
 
   public GameObject StraightRoad;
   public Transform[] spawnpoints;
   public Button StraightRoadButton;
   public GameObject RoadSpawnPoint;
 
   float currentOffset = 1000f;
 
   // Use t$$anonymous$$s for initialization
   void Start() {
    Button srbtn = StraightRoadButton.GetComponent < Button > ();
    srbtn.onClick.AddListener(Spawn); // just the button for the road, t$$anonymous$$s works
   }
 
   // Update is called once per frame
   void Spawn() {
    Vector3 localOffset = new Vector3(0, 0, currentOffset); //offset for first road block
    Vector3 spawnPosition = StraightRoad.transform.position + localOffset;
    Instantiate(StraightRoad, spawnPosition, transform.rotation); //instantiate first new block, t$$anonymous$$s works fine
 
    currentOffset += 1000f;
 
    Debug.Log("Straight Road spawned.");
   }
 
 
  }
Comment
Add comment · Show 2 · 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 solidsnake530 · Feb 09, 2017 at 10:53 AM 0
Share

That fixed it! Knew it would be something really small like that, thank you so much.

avatar image Dumanarif · Jan 15, 2019 at 10:54 PM 0
Share

very thanks! you save my day :)

avatar image
0

Answer by Echaminya · Jun 25, 2019 at 11:15 PM

Used t$$anonymous$$s concept a game I'm working on and worked out great!!! Thank you so much for t$$anonymous$$s!. I appreciate! :)

Comment
Add comment · 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

Your answer

Hint: You can notify a user about this post by typing @username

Up to 2 attachments (including images) can be used with a maximum of 524.3 kB each and 1.0 MB total.

Welcome to Unity Answers

If you’re new to Unity Answers, please check our User Guide to help you navigate through our website and refer to our FAQ for more information.

Before posting, make sure to check out our Knowledge Base for commonly asked Unity questions.

Check our Moderator Guidelines if you’re a new moderator and want to work together in an effort to improve Unity Answers and support our users.

Follow this Question

Answers Answers and Comments

11 People are following this question.

avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image

Related Questions

Distribute terrain in zones 3 Answers

Multiple Cars not working 1 Answer

GUIText Instantiation and Update the Instantiated Text. C# 1 Answer

How to spawn gameobject from host to all clients 1 Answer

Destroying childs and Instantiate [C#] 0 Answers


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