Question Overworld - Jump between scenes

Hello,

I'm trying to create an overworld a la Super Mario 64 with different portals to go through that will load different scenes.
My Problem is I don't know how to let my SceneManager know which scene to load.

I want to give each of my portals a number that I set via script, this could be equivalent to the sceneBuildIndex number for example. This script is attached to each portal. (portal.cs)

If the sceneBuildIndex equals 1 (Buildindex of my overworld) it should load the scene that i have defined via the script. So you can only go from the overworld to another world. if you go into a portal that is NOT in the overworld, you get just ported back to the overworld.

GameManager.cs

Code (CSharp):

1. public void LevelEnd()
2. {
3.     // is the active level the overworld? then load LevelNumber
4.     if (SceneManager.GetActiveScene().buildIndex == 1)
5.   {
6.     Debug.Log("loading" +LevelNumber)
7.     SceneManager.LoadScene(LevelNumber);
8.    }
9.    else //load Overworld
10.    {
11.     SceneManager.LoadScene("Level 0");
12.    }
13.  

Here i want to define LevelNumber and then make it so every Number refers to a specific BuildIndex number. but how?

Portal.cs

Code (CSharp):

1. public int LevelNumber;
2.  
3. // ????

I have no good understanding on how to pass variables between different functions and scripts to pls bear with me
Im thankful for any help!


current BuildIndex Numbers:
Menu - 0
Level 0 - 1 (overworld)
Level 1 - 2
Level 2 - 3
Level 3 - 4

 

hope im allowed to bump here, as I'm still stuck at that part. Really grateful for any help or hint.