Switching Scene and GameObjects

[dnblank12]

Hi, I have an issue regarding switching scene, after I finish a quest to equip sword and shield (by using on trigger enter) then going to the portal, how do I make the sword and shield still equip on the next scene?

[Tony Li]

Hi,

Write a custom saver with a RecordData() method that records what the player has equipped, and an ApplyData() method that equips the recorded items back onto the player.

When the save system handles a scene change (e.g., via a Scene Portal), the player GameObject in the original scene will call the customer saver's RecordData() and save the equipment state. After the save system finishes loading the new scene, it will call that scene's saver's ApplyData() to apply that same state to the player GameObject in the new scene.

[dnblank12]

Hello, where do I attach the custom saver? to the player or a separate gameobject?

Edit: I managed to make it somehow working(not sure) but when loading from save slot (dialogue system menu framework) it enables the other sword. Any tips or best way to do this?

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using UnityEngine;

public class ItemSaver : MonoBehaviour
{
    public GameObject Sword;
    public GameObject Axe;
    public GameObject Shield;
}

Code: Select all

using System;
using UnityEngine;

namespace PixelCrushers
{

    public class SaverItem : Saver
    {


        [Serializable]
        public class Data
        {
            public bool Sword;
            public bool Axe;
            public bool Shield;
        }
        public override string RecordData()
        {
            var data = new Data();
            bool boolSword = GetComponent<ItemSaver>().Sword ? true : false;
            bool boolAxe = GetComponent<ItemSaver>().Axe ? true : false;
            bool boolShield = GetComponent<ItemSaver>().Shield ? true : false;

            data.Sword = boolSword;
            data.Axe = boolAxe;
            data.Shield = boolShield;

            return SaveSystem.Serialize(data);
        }

        public override void ApplyData(string s)
        {
            if (string.IsNullOrEmpty(s)) return;
            var data = SaveSystem.Deserialize<Data>(s);
            if(data == null) return;
            var itemsaver = GetComponent<ItemSaver>();
            itemsaver.Sword.SetActive(data.Sword);
            itemsaver.Axe.SetActive(data.Axe);
            itemsaver.Shield.SetActive(data.Shield);
            
        }
    }

}

[Tony Li]

Hi,

What do you mean by "other sword"? Are there two swords?

[dnblank12]

Hi, sorry for the confusion, its an Axe but currently still using a prefab sword so I have two swords

[Tony Li]

Temporarily tick the Debug checkboxes on the Save System and PlayerPrefs Saved Game Data Storer components. When you save the game, it will log the save data to the Console. Find the Key value of your SaverItem. Then check the values of Sword and Axe. For example, it might look like:

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{ "key":"Equipped", "data":{ Sword:true, Axe:false, Shield:true } }

In your SaverItem class's ApplyData() method, add some Debug.Log() lines that will tell you if it's erroring out early:

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public override void ApplyData(string s)
{
    if (string.IsNullOrEmpty(s)) Debug.Log($"SaverItem {key} data is empty");
    if (string.IsNullOrEmpty(s)) return;
    var data = SaveSystem.Deserialize<Data>(s);
    if(data == null) Debug.Log($"SaverItem {key} data {s} could not be deserialized");
    if(data == null) return;
    ...

[dnblank12]

here is the console result

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{"key":"ItemSaverSaverItem","sceneIndex":-1,"data":"{\"Sword\":true,\"Axe\":true,\"Shield\":true}"}]}

[Tony Li]

In your RecordData() method, change these lines:

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bool boolSword = GetComponent<ItemSaver>().Sword ? true : false;
bool boolAxe = GetComponent<ItemSaver>().Axe ? true : false;
bool boolShield = GetComponent<ItemSaver>().Shield ? true : false;

to:

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var itemSaver = GetComponent<ItemSaver>();
bool boolSword = itemSaver.Sword.activeSelf;
bool boolAxe = itemSaver.Axe.activeSelf;
bool boolShield = itemSaver.Shield.activeSelf;

This will save the active/inactive state of each of the GameObjects instead of whether a GameObject is or isn't assigned to the variable.

[dnblank12]

Many thanks Tony, it works perfectly

[Tony Li]

Glad to help!