How to Add and retreive Items from a nested list

Here is an example of a type of game I would like to create that can apply to many different scenarios.
In this example lets use shopping malls and stores


I have two Scenes, overview, and mall

the overview scene allows user to place a single type of game object (shopping malls) at various locations on the overview scene

the mall scene allows user to place multiple different game objects (stores: ie best buy, Mc Donalds, EBgames etc) at various positions in the mall scene


For Example:
Place mall 1 mall 2 and mall 3 at differnt positions in the overview scene.
Click on mall 1 and go to mall scene for mall 1
Place stores at various locations in mall 1.
Click on overview to go back to overview and then click on mall 2 and do the same.

I place GameControl script in both scenes so that I can add store, mall info and retrieve store, mall info from both scenes

I have a mall class that contains name of the mall and a list of stores

the store class contains transform and position of store


from the overview script I am able to add a mall to the list

Code (CSharp):

1.     private List<STORE> store = new List<STORE>();
2.     GameControl.control.malls.Add (new MALL (mall_label, store));

however I am not sure how to add a store to the mall from the mall scene
Also I am not sure How I can iterate through all the malls and show positions of all stores

This is the Overview script

Code (CSharp):

1. using UnityEngine;
2. using System.Collections;
3. using System.Collections.Generic;
4.  
5. public class OVERVIEW {
6.     public string mall_name;
7.     public List<STORE> store = new List<STORE>();
8.  
9.  
10.    
11.     public OVERVIEW (string new_mall_name, List<STORE> new_store)
12.     {
13.         mall_name = new_mall_name;
14.         store = new_store;
15.         }
16. }
17.  

this is the Store Script

Code (CSharp):

1. using UnityEngine;
2. using System.Collections;
3.  
4. public class STORE {
5.     public Transform obj;
6.     public Vector3 obj_pos;
7.  
8.  
9.  
10.    
11.     public STORE (Transform new_object, Vector3 new_object_pos)
12.     {
13.         obj = new_object;
14.         obj_pos = new_object_pos;
15.         }
16. }

this is the GameControl Script

Code (CSharp):

1. using UnityEngine;
2. using System.Collections;
3. using System.Collections.Generic;
4.  
5. public class GameControl : MonoBehaviour {
6.  
7.     public static GameControl control;
8.     public List<OVERVIEW> malls = new List<OVERVIEW>();
9.     public string mall_label;
10.  
11.  
12.  
13.     void Awake() {
14.         if (control ==null)
15.         {
16.             DontDestroyOnLoad(gameObject);
17.             control=this;
18.         }
19.         else if (control !=this)
20.         {
21.             Destroy(gameObject);
22.         }
23.    
24.         }
25.  
26.     }

 

Well, if I were you, I had one script for mall (something like this, not tested) and I add some events: https://msdn.microsoft.com/en-us/library/aa645739(v=vs.71).aspx

Code (CSharp):

1. using UnityEngine;
2. using System.Collections;
3. public class MALL {
4.     public List<STORE>  stores;
5.     private string mallName;
6.     public string mallLabel { get { return mallName; } }  
7.    
8.     public delegate void OnAddStore(STORE _store);
9.     public delegate void OnRemoveStore(STORE _store);
10.  
11.     public MALL (string mall_label, List<STORE> _stores = null)
12.     {
13.         this.mallName = mall_label;
14.         this.stores = _stores == null ? new List<STORE>() : _stores;
15.         }
16.  
17.    public void AddStore( STORE newStore )
18.    {
19.         this.stores.add( newStore );
20.         if( OnAddStore != null ) OnAddStore(newStore);
21.    }
22.    
23.    public STORE GetLastStore()
24.    {
25.        STORE _store = this.stores.Count > 0 ? return this.stores[this.stores-1] : null;
26.     }
27. //    ...remove here
28.  
29. }

and in your Mall, just add your events/delegates and just use your positions to place them, something like this

Code (CSharp):

1. //your mall is OVERVIEW, so just change the class if you dont want rename
2. //if you use delegate/events you just run this once
3. foreach( Mall mall in GameControl.malls )
4. {
5.    foreach( STORE store in mall.stores )
6.    {
7.       Instantiate( store.obj, obj.position, Quaternion.identity );
8.    }
9. }
10.  
11. //so if you want add new store for your scene, im assuming you're loadlevelasync, just do a function with delegate
12.  
13. //somewhere add your delegate like this
14. mall.OnAddStore += NewStore;
15. //and your function like this
16. void NewStore(STORE _store)
17. {
18.          Instantiate( _store.obj, _obj.position, Quaternion.identity );
19. }

It's a complicated question, because have infinite ways to do. Expected can be clear and light you =)

 

Thanks for this. I think I understand but I am having a few issues

I get a stack overflow error when I try to do this in another script

Code (CSharp):

1. foreach( Mall mall in GameControl.malls )
2. Debug.Log(mall.mallLabel);

but in the mall class if I change

Code (CSharp):

1. publicstring mallLabel{ get {return mallName; }}

to

Code (CSharp):

1. publicstring mallLabel;

and then change

Code (CSharp):

1. this.mallName= mall_label;

to

Code (CSharp):

1. mallName= mall_label;

I no longer get stack overflow error

Also in this line below there is a lot of stuff happening and I am not sure how it works
is there any documentation to this type of statement

Code (CSharp):

1. this.stores= _stores ==null?new List<STORE>(): _stores;

 

Nice. =)

in this line, is nothing else than an "if statement"

Code (CSharp):

1. this.stores= _stores ==null?new List<STORE>(): _stores;
2.  
3. is equal
4.  
5. if( _stores == null )
6. {
7.   this.stores = new List<STORE>();
8. }
9. else
10. {
11.   this.stores = _stores;
12. }