Index was outside the boundary of array? Impossible! Help me please.

Unity Engine
1

It said index was outside the range of boundary, when I call the function enterlvl_2, 5, and 6. The weird part is enterlvl 3 and 4 is able to call successfully. I dont know why, any idea?

public class GameManager : MonoBehaviour
{

    public GameObject[] level;
    float[] lvlunlock = new float[6];
 

    void Awake()
    {
        lvlunlock[1] = PlayerPrefs.GetFloat("lvl2_unlock", 0);
        lvlunlock[2] = PlayerPrefs.GetFloat("lvl3_unlock", 0);
        lvlunlock[3] = PlayerPrefs.GetFloat("lvl4_unlock", 0);
        lvlunlock[4] = PlayerPrefs.GetFloat("lvl5_unlock", 0);
        lvlunlock[5] = PlayerPrefs.GetFloat("lvl6_unlock", 0);



        for (int i = 1; i < level.Length; i++)
        {
            Debug.Log(lvlunlock.Length);
        
            if (lvlunlock == 0)
            {
                level.GetComponent<Button>().interactable = false;
            }
            else if (lvlunlock == 1)
            {
                level.GetComponent<Button>().interactable = true;
            }
        }

    }


    public void StartLvl()

    {
        SceneManager.LoadScene(SceneManager.GetActiveScene().buildIndex + 1);
    }

  public void quit()
    {
        Application.Quit();
    }

    #region levelunlock
    public void enterlvl_2()
    {
        level[1].GetComponent<Button>().interactable = true;
        PlayerPrefs.SetFloat("lvl2_unlock", 1);
    }
    public void enterlvl_3()
    {

        level[2].GetComponent<Button>().interactable = true;
        PlayerPrefs.SetFloat("lvl3_unlock", 1);
    }
    public void enterlvl_4()
    {

        level[3].GetComponent<Button>().interactable = true;
        PlayerPrefs.SetFloat("lvl4_unlock", 1);
    }
    public void enterlvl_5()
    {

        level[4].GetComponent<Button>().interactable = true;
        PlayerPrefs.SetFloat("lvl5_unlock", 1);
    }
    public void enterlvl_6()
    {

        level[5].GetComponent<Button>().interactable = true;
        PlayerPrefs.SetFloat("lvl6_unlock", 1);
    }
    #endregion levelunlock


}

line 56,74 and 80 got the "index was outside the bound of array "error. I do know why there is such error for only 3 buttons .

2

Two things:

  1. please use code formatting. See first post in forum

  2. please post precise text of error, and indicate above which line it happens on

3

thanks for reminding, I dont know about that. I have formatted it.

4

When you check “lvlunlock” of a level, you have to include the index of the current iteration of the loop. Also i dont see why your index for the loop starts at 1 (Arrays start at 0, so an array with 6 elements (levels) has a length of 5 (including 0)
Your code:
[quote=“overpowerogue, post:1, topic: 765380, username:overpowerogue”]
```

  •    for (int i = 1; i < level.Length; i++)
  {
      Debug.Log(lvlunlock.Length);

      if (lvlunlock == 0)
      {
          level.GetComponent<Button>().interactable = false;
      }
      else if (lvlunlock == 1)
      {
          level.GetComponent<Button>().interactable = true;
      }
  }*

* *[/quote] * *Proposed code:* *

  •    for (int i = 0; i < level.Length; i++)
  {
      Debug.Log(lvlunlock.Length);

      if (lvlunlock[i] == 0)
      {
          level[i].GetComponent<Button>().interactable = false;
      }
      else if (lvlunlock[i] == 1)
      {
          level[i].GetComponent<Button>().interactable = true;
      }
  }*

```
Without the specific index for the fields you want to check, the programm does not know which element of the array it has to check/modify.

5

The reason I put i=1 is because there is no need to unlock level 1 button since it is unlocked initially, thats why I start from 1.
I still get the error even added

6

Neither line 56 nor 74 in your code access an array, line 80 doesn’t exist. If you give us bad quality info, all you get are bad quality answers. I for sure can only guess, and my guess is that even through you declare ‘level’ as an array of GameObject, you never initialize it, so it’s empty. Accessing Level[3] will of course create an out of bounds error.