Persist selected inventory item on scene transitions

stelabouras

I was looking for a way to make a selected inventory item persist when the player moves from scene to scene, but I couldn't find a reference in the documentation.

From what I can gather, it looks like the engine manually resets the selected item when the scene initializes (RuntimeInventory -> OnInitialiseScene()), so by the looks of it this functionality is currently unsupported. Is this right or am I missing something?

ChrisIceBox

It's possible with a custom script that relies on hooking into the OnBeforeChangeScene and OnAfterChangeScene custom events - in order to back up the item, and restore it afterwards.

It's made a little more tricky, however, given that the item is also deselected in Start - but you can use a coroutine to get around this. Something like this ought to do it:

using UnityEngine;
using System.Collections;
using AC;

public class CrossSceneItemSelector : MonoBehaviour
{

    private InvInstance crossSceneInvInstance;

    private void OnEnable ()
    {
        EventManager.OnBeforeChangeScene += OnBeforeChangeScene;
        EventManager.OnAfterChangeScene += OnAfterChangeScene;
    }

    private void OnDisable ()
    {
        EventManager.OnBeforeChangeScene -= OnBeforeChangeScene;
        EventManager.OnAfterChangeScene -= OnAfterChangeScene;
    }

    private void OnBeforeChangeScene (string nextSceneName)
    {
        crossSceneInvInstance = KickStarter.runtimeInventory.SelectedInstance;
    }

    private void OnAfterChangeScene (LoadingGame loadingGame)
    {
        if (loadingGame == LoadingGame.No)
        {
            StartCoroutine (ReselectItem ());
        }
    }

    private IEnumerator ReselectItem ()
    {
        yield return null;
        KickStarter.runtimeInventory.SelectItem (crossSceneInvInstance);
    }

}

This'll need to be attached to a GameObject that survives scene changes - attaching it to your PersistentEngine prefab will be enough.

stelabouras

Thanks for the quick response Chris!

This script seems to be working as intended.