Not saving items collected next play with binary saving system

Hi guys
I'm new at unity
I have a problem with saving items collected like coins and stars in binary saving system.
How can I save coins collected and not show next play.
Ofcorse I can do it for few number but it's too much repeating for more item I have 90 stars that after player collected them,they should be disappeard
Please help me

 

Hi,
Simple way to do it is by creating a list of objects and save that list into your binary file.

Code (CSharp):

1. public class CoinStarItem
2. {
3.    public int Index {get; set;}
4.    public bool Visible {get; set;}
5.    public GameObject ActualGameObject {get; set;}
6.    public Vector3 position {get; set;}
7.    public TypeOfItem ItemType {get; set;}
8. }

Then you have to save this list infos into the binary file..

Code (CSharp):

1. List<CoinStarItem> items;

Actualy you need to save (index, visibility, item type and position)

And at loading, repopulate the list and apply visibility;

 

Thank u very much
But I dont use set and get for saving
This way : index=database.index ;
How can I save this variable to the list
And how to use list after load

 

Loading should be something like this:

Code (CSharp):

1.  
2. foreach(var database in databaseFields)
3. {
4.   CoinStarItem item = new CoinStarItem();
5.  
6.   TpeOfItem t = database.typeOfItem;
7.   GameObject go = CreateInstance(t == Coin ? coinPrefab : starPrefab);
8.   item.Index = database.index;
9.   item.Visible = database.itemVisible;
10.   item.position = database.position;
11.   go.SetActive(item.Visible);
12.   go.transform.position = item.position;
13.   item.ActualGameObject = go;
14.  
15.   items.Add(item);
16. }

Save should be something like:

Code (CSharp):

1. foreach(var item in items)
2. {
3.   //now just populate your database
4.   database.index = item.Index;
5.   etc...
6.   save(database field);
7. }

 

Sorry but I can't understand what should I'd do

Here is my code

Code (CSharp):

1. using System.Collections;
2. using System;
3. using System.IO;
4. using System.Collections.Generic;
5.  
6. using System.Runtime.Serialization.Formatters.Binary;
7. using UnityEngine;
8.  
9. public class DataManagement : MonoBehaviour
10. {
11.     public static DataManagement datamanagement;
12.  
13.  
14.     public int index;
15.     public bool visible;
16.     public GameObject ActualGameobject;
17.     public Vector3 posision;
18.  
19.     private void Awake()
20.     {
21.         if (datamanagement == null)
22.         {
23.             DontDestroyOnLoad(gameObject);
24.             datamanagement = this;
25.         }
26.         else if (datamanagement != this)
27.         {
28.             Destroy(gameObject);
29.         }
30.     }
31.  
32.  
33.     public void SaveData()
34.     {
35.         BinaryFormatter binaryForm = new BinaryFormatter();
36.         FileStream file = File.Create(Application.persistentDataPath + "/gameInfo8.mtr");
37.         gameData data = new gameData();
38.  
39.         data.index = index;
40.         data.visible = visible;
41.         data.ActualGameobject = ActualGameobject;
42.         data.posision = posision;
43.  
44.         binaryForm.Serialize(file, data);
45.         file.Close();
46.     }
47.  
48.  
49.     public void LoadData()
50.     {
51.         if (File.Exists(Application.persistentDataPath + "/gameInfo8.mtr"))
52.         {
53.             BinaryFormatter binaryForm = new BinaryFormatter();
54.             FileStream file = File.Open(Application.persistentDataPath + "/gameInfo8.mtr", FileMode.Open);
55.             gameData data = (gameData)binaryForm.Deserialize(file);
56.             file.Close();
57.  
58.          
59.  
60.         }
61.  
62.         else { Debug.Log("No dataBase"); }
63.     }
64.  
65.  
66.  
67.  
68.     [Serializable]
69.  
70.     class gameData
71.     {
72.  
73.         public int index;
74.         public bool visible;
75.         public GameObject ActualGameobject;
76.         public Vector3 posision;
77.  
78.     }
79.  
80.  
81.  
82.  
83.  
84.  
85.  
86.  
87. }

 

To save/load: https://wiki.unity3d.com/index.php/Saving_and_Loading_Data:_XmlSerializer

GameData

Code (CSharp):

1. public enum eTypeOfGameData
2. {
3.     NONE = 0,
4.     COIN,
5.     STAR
6. }
7.  
8. public class GameData
9. {
10.     public int Index {get; set;}
11.     public bool Visible {get; set;}
12.     public Vector3 Position {get; set;}
13.     public eTypeOfGameData TypeOfGameData {get; set;}
14. }

Code (CSharp):

1. //this is coin/star class and you should attach this to your coin/star object.. also is not completed
2. public class CoinStar
3. {
4.     private GameData MyGameData;
5.     private bool StatusVisibility;
6.  
7.     public void SetGameData(GameData gameData)
8.     {
9.         MyGameData = gameData;
10.         StatusVisibility = gameData.Visible;
11.         transform.position = MyGameData.Position;
12.     }
13.  
14.     public void SetVisibility(bool value)
15.     {
16.         MyGameData.Visible = value;
17.     }
18.  
19.     void Update()
20.     {
21.         //your code here
22.    
23.         if (StatusVisibility != MyGameData.Visible)//visibility changed
24.         {
25.             StatusVisibility = MyGameData.Visible;
26.             if (!MyGameData.Visible)//this is invisible
27.             {
28.                 GetComponent<Renderer>().enabled = false;
29.                 //gameObject.active = false; if you want to disable the gameObject
30.             }
31.             else
32.             {
33.                 GetComponent<Renderer>().enabled = true;
34.             }
35.             SaveToFile();//here you should call your method to save this new stuff into your file
36.         }
37.     }
38. }

https://docs.unity3d.com/ScriptReference/Collider.OnCollisionEnter.html
https://docs.unity3d.com/ScriptReference/MonoBehaviour.OnCollisionEnter2D.html

Code (CSharp):

1. //when player interact with your coin/star just call
2. col.gameObject.GetComponent<CoinStar>().SetVisibility(false);

Code (CSharp):

1. //Load data should return a bool .. to tell you if everything was ok
2. //place try.. catch in LoadData
3. //After LoadData()
4. public void SetGameData(List<GameData> gameDatas)
5. {
6.     foreach(var gd in gameDatas)
7.     {
8.         if (gd.TypeOfGameData == eTypeOfGameData.COIN)
9.         {
10.             InstantiateObject(coinPrefab, gd);
11.         }
12.         else if (gd.TypeOfGameData == eTypeOfGameData.STAR)
13.         {
14.             InstantiateObject(starPrefab, gd);
15.         }
16.     }
17. }
18. public void InstantiateObject(GameObject prefabObject, GameData gd)
19. {
20.     //https://docs.unity3d.com/ScriptReference/Object.Instantiate.html
21.     GameObject go = Instantiate(prefabObject);
22.     CoinStar cs = go.GetComponent<CoinStar>();
23.     cs.SetGameData(gd);
24.     //you should always check if go, cs, prefab object is not null, else it will crash when one of those is null
25. }
26.