Wayback Machinekoobas.hobune.stream
May JUN Jul
Previous capture 12 Next capture
2021 2022 2023
1 capture
12 Jun 22 - 12 Jun 22
sparklines
Close Help
  • 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 /
  • Help Room /
avatar image
0
Question by Shkeek · Oct 03, 2015 at 05:25 AM · arrayrectobject-reference-error

Using Rect[] to create multiple rectangles results in error

     Rect[] rectangles;
 
     // Use this for initialization
     void Start () {
         ListPoints();
     }
 
     void ListPoints() {
         for (int i = 0; i < points.Length; i++) {
             print (points[i].transform.position);
             rectangles[i] = new Rect(Points[i].transform.position.x, Points[i].transform.position.y, xBuffer, yBuffer);
         }
     }

Using the code above, I get the error "Object reference not set to an instance of an object". It's worth noting, I can execute the code if I don't use an Array for rectangles, but then it will only create 1 rectangle. My goal is to create a rectangle around each point (as shown in the for loop).

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

1 Reply

· Add your reply
  • Sort: 
avatar image
0
Best Answer

Answer by MakeCodeNow · Oct 04, 2015 at 03:24 AM

You need to allocate the rectangles array itself. Something like...

 void ListPoints() {
          rectangles = new Rect[points.Length];
          for (int i = 0; i < points.Length; i++) {
              print (points[i].transform.position);
              rectangles[i] = new Rect(Points[i].transform.position.x, Points[i].transform.position.y, xBuffer, yBuffer);
          }
      }
Comment
Add comment · 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 Shkeek · Oct 04, 2015 at 03:56 AM 0
Share

Although I found another way to do what I was trying to do (I simply added colliders to the game objects to find the touch points, rather than create rectangles and seeing if those are being touched).

I did go back and test the code and it works, well done. I would have never thought to create the Rect[points.length] part before using the array to make the rectangles. Learn something new every day :D

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.

Follow this Question

Answers Answers and Comments

31 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 avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image

Related Questions

Unity Inspector public large array - Lag and errors - Optimized GUI Block text buffer too large 0 Answers

NullReferenceException with serialized array 0 Answers

Creating an array of Color32 arrays 1 Answer

Get child button of and object in herarchy order 0 Answers

Multiple script instances in a scene but need to access certain ones 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