CODEWITHSUNDEEP
c#unity-game-engine
Holden
Holden

Reputation: 109

Having trouble adding to a List that exists

So I have a user script that contains a List inventory. Then I use a public static User user to access a single user's information throughout the game.

The problem is at some point I'm losing the link to that inventory. In the awake function if I call Debug.Log(User.user.inventory.Count), it prints 0. however if i try and access this inventory at any future time I get a Null Reference error as if it doesn't exist and can't add to it.

If I make the size of the list in the inspector to 1, then it somehow exists and I can add things to it forever, however then I have a dead spot at index 0.

 private void AddItemToInventory(ItemObject item, Image uiSprite)
    {
        User.user.inventory.Add(item);
        uiSprite.sprite = GenerateOrbRaritySprite(RaritySprites.raritySprites, item.rarity);
        uiSprite.enabled = true;
    }

It is failing on the inventory lookup, even though I can see it in the inspector fine.

My User has the following Awake() function so that it stays between scenes:

void Awake()
{
    if(user == null)
    {
        user = this;
        DontDestroyOnLoad(gameObject);
    }
    else if (user != this)
    {
        Destroy(gameObject);
    }
}

Any ideas? Thank you!

Upvotes: 1

Views: 34

Answers (1)

Summer
Summer

Reputation: 260

Try with just one User.

private void AddItemToInventory(ItemObject item, Image uiSprite)
{
    user.inventory.add(item);
    uiSprite.sprite = GenerateOrbRaritySprite(RaritySprites.raritySprites, item.rarity);
    uiSprite.enabled = true;
}

And since this method doesn't have access to the user the user will need passed in as a parameter.

private void AddItemToInventory(User user, ItemObject item, Image uiSprite)
{
    user.inventory.add(item);
    uiSprite.sprite = GenerateOrbRaritySprite(RaritySprites.raritySprites, item.rarity);
    uiSprite.enabled = true;
}

Upvotes: 1

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