• 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 elsharkawey · Aug 26, 2016 at 07:16 PM · c#scripting problemunity4accessing

error CS0120: An object reference is required to access non-static member

this line on my code

                         "BoardManager.SpawnChessman(mySecondCanvas11.Constants.PIECE_QUEEN,x,y);"

working ok on the manager script put when i moving it to other script and trying to accessing to it fromm other script i get this error

Assets/Scripts/mySecondCanvas11.cs(24,49): error CS0120: An object reference is required to access non-static member `BoardManager.SpawnChessman(int, int, int)'

 using UnityEngine;
 using System.Collections;
 using System.Collections.Generic;
 public class mySecondCanvas11 : MonoBehaviour {
  
 public BoardManager _SpawnChessman;
 public static class Constants
     {
        
                 //public const int PIECE_KING = 0;
                 public const int PIECE_QUEEN = 1;
                 public const int PIECE_ROOK = 2;
                 public const int PIECE_BISHOP = 3;
                 public const int PIECE_KNIGHT=4;
                 public const int PIECE_PAWN = 5;
     }
  
  
 public void PromotePiece (int type)
 {
    switch (type) {
                  case Constants.PIECE_QUEEN:
                            //BoardManager.SpawnChessman(1, x, y);
                             BoardManager.SpawnChessman(mySecondCanvas11.Constants.PIECE_QUEEN,x,y);
  
                            //activeChessman.Remove(selectedChessman.gameObject);
                            //Destroy(selectedChessman.gameObject);
    
  
                           break;
                  case Constants.PIECE_ROOK:
                            // code to make a rook
                           break;
                  // and so on
             }
 }
 }

 







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

Answer by stanogg · Aug 26, 2016 at 07:28 PM

You need a reference to the BoardManager class as its not static. Add this to your class:

  public BoardManager boardManager;

and then use it like that

 boardManager.SpawnChessman(mySecondCanvas11.Constants.PIECE_QUEEN,x,y);

or you can use a singleton pattern if you always have only one board manager in your scene.

 public class BoardManager : MonoBehaviour {
 
     public static BoardManager instance;
     
     void Awake(){
     if(!instance){
        instance = this;
     }else{
        Destroy(gameObject);
     }
 }


and access it like that :

  BoardManager.instance.SpawnChessman(mySecondCanvas11.Constants.PIECE_QUEEN,x,y);

hope this helps!

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

The best place to ask and answer questions about development with Unity.

To help users navigate the site we have posted a site navigation guide.

If you are a new user to Unity Answers, check out our FAQ for more information.

Make sure to check out our Knowledge Base for commonly asked Unity questions.

If you are a moderator, see our Moderator Guidelines page.

We are making improvements to UA, see the list of changes.



Follow this Question

Answers Answers and Comments

6 People are following this question.

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

Related Questions

Can't Add Script "The script needs to derive from MonoBehaviour!" 1 Answer

How do I add a simple jump function to this script? 2 Answers

Photon SetCustomProperties not working for previously connected players 0 Answers

Swapping characters breaks controls 0 Answers

Regarding SetActive function 1 Answer

  • Anonymous
  • Sign in
  • Create
  • Ask a question
  • Spaces
  • Default
  • Help Room
  • META
  • Moderators
  • Explore
  • Topics
  • Questions
  • Users
  • Badges