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Question by vonSchlank · Apr 12, 2018 at 08:34 AM · listmultipleclassesnested

Class with a List of Classes containing a List of Classes

Hello!

I have three Classes, World, Area and Level. World contains a List of Areas, and each Area contains a List of Levels. I was about to set first area's second level's state like areaList[0].levelList[1].state = LevelState.unlocked, but it seems like it sets all the areas' second levels' state. The fact that i can't set any of the state Enums in the inspector (i can click on them, but nothing happens if i selest a divverent state) is just a bonus. :) What am i doing wrong? Thanks in advance!

 using System.Collections;
 using System.Collections.Generic;
 using UnityEngine;
 
 public enum LevelState    {    locked, unlocked, completed    }
 
 public class World : MonoBehaviour {
 
     public List <Area> areaList = new List<Area> ();
 
     void Start () {
         List <Level> levelList = new List<Level> ();
         for (int i = 0; i < 5; i++) {
             levelList.Add(new Level (LevelState.locked, 0));
         }
         for (int i = 0; i < 5; i++) {
             areaList.Add(new Area (false, levelList));
         }
         areaList[0].levelList[1].state = LevelState.unlocked;
     }
 }
 
 [System.Serializable]
 public class Area {
 
     public bool unlocked;
     public List <Level> levelList;
 
     public Area (bool _unlocked, List <Level> _levelList)
     {
         unlocked = _unlocked;
         levelList = _levelList;
     }
 }
 
 [System.Serializable]
 public class Level {
 
     public LevelState state;
     public int score;
 
     public Level(LevelState _state, int _score){
         state = _state;
         score = _score;
     }
 }

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Answer by Hellium · Apr 12, 2018 at 08:57 AM

it seems like it sets all the areas' second levels' state

Of course, because all the areas share the same levelList....

 areaList.Add(new Area (false, levelList)); // Here, you provide the same list for every area....

You have to create a new list for every area:

 void Start ()
 {
      for (int areaIndex = 0; areaIndex < 5; areaIndex++)
      {
          List <Level> levelList = new List<Level> (5);
          for (int levelIndex = 0; levelIndex < 5; levelIndex++)
          {
              levelList.Add(new Level (LevelState.locked, 0));
          }
          areaList.Add(new Area (false, levelList));
      }
      areaList[0].levelList[1].state = LevelState.unlocked;
  }

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avatar image vonSchlank · Apr 12, 2018 at 09:05 AM 0
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facepalm Pfff... Ofcourse. I need a big sleep now... :) Thank you!

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