How to reference an Object in Unity with C#?

Question

Hy Guys I'm getting the error CS0120 in Unity at following Code:

Error CS0120: An object reference is required for the non-static field, method, or property 'PortalScript.Spawn()'

Script 1: here I try to create a new GameObject on Screen with a certain distance to Player.

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.SceneManagement;


public class PortalScript : MonoBehaviour
{
    public GameObject Portal; // referenced at Inspector
    GameObject Player = GameObject.Find("Player");

    public void Spawn()
    {
        bool portalSpawned = false;
        while (!portalSpawned)
        {   
            Vector3 portalPosition = new Vector3(Random.Range(-7f, 7f), Random.Range(-4f, 4f), 0f);
            if((portalPosition - Player.transform.position).magnitude < 3)
            {
                continue;
            }
            else
            {
                // Instantiate at position.
                Instantiate(Portal, portalPosition, Quaternion.identity);
                portalSpawned = true;
            }
        }
    }
}

Script 2: This script is on the Player. On Case it should call the method Spawn from script 1

public class Point : MonoBehaviour
{    

public PortalScript Spawn; 

    void Update()
        {
            score = updateScore;

            switch (score) 
            {
                case 1:
                    PortalScript.Spawn(); // ERROR at this line
                    break;
            }
}

If I write the code from script 1 directly into script 2, it works.

My brain stops at that point. Thanks for all your help and let me know if you need more information.

Spawn is not a static method. So you need an instance of PortalScript in order to call that method. It looks like your code should be, oddly enough, Spawn.Spawn() — Zer0

Hamid Yusifli Hamid Yusifli · Accepted Answer · 2020-03-08T17:55:29

0

votes

Replace this line:

PortalScript.Spawn(); // ERROR at this line

with this:

Spawn.Spawn();

How to reference an Object in Unity with C#?

1 Answers