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Question by ExoticPiney · May 01 at 08:26 PM · serializationsave databinaryformatter

Why am I getting SerializationException: Type 'UnityEngine.MonoBehaviour' etc.

I was trying to make a save and load system and everything is set up but when I press the save button I get these two errors: alt text

and alt text

Here is my code:

 using UnityEngine;
 using System.IO;
 using System.Runtime.Serialization.Formatters.Binary;
 
 public static class SaveSystem
 {  
     public static void SavePlayer (Player player) {
         
         BinaryFormatter formatter = new BinaryFormatter();
         string path = Application.persistentDataPath + "/save.arbf";
         FileStream stream = new FileStream(path, FileMode.Create);
 
         PlayerData data = new PlayerData(player);
 
         formatter.Serialize(stream, data);
         stream.Close();
 
     }
 
     public static PlayerData LoadPlayer ()
     {
         string path = Application.persistentDataPath + "/save.arbf";
         if(File.Exists(path))
         {
             BinaryFormatter formatter = new BinaryFormatter();
             FileStream stream = new FileStream(path, FileMode.Open);
 
             PlayerData data = formatter.Deserialize(stream) as PlayerData;
             stream.Close();
 
             return data;
         } else
         {
             Debug.LogError("Save file not found in " + path);
             return null;
         }
     }
 
 }
 

image-2022-05-01-151928464.png (24.8 kB)
image-2022-05-01-152110598.png (17.8 kB)
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Answer by CodeMonkeyYT · May 02 at 05:21 PM

Looks like your PlayerData class is extending MonoBehaviour and you're trying to use the constructor, you cannot do that, if you want to use the constructor you need to remove MonoBehaviour and make it a regular C# class.

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avatar image ExoticPiney · May 03 at 09:29 PM 0
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But if I remove the MonoBehaviour extension after the PlayerData class then I get the ...mising the class attribute 'ExtensionOfNativeClass' so I have to add the MonoBehaviour extension.

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