cirnogodot/Scripts/UI/WeaponAmmoCounter.cs

using Cirno.Scripts.Resources;
using Godot;

namespace Cirno.Scripts.UI;

public partial class WeaponAmmoCounter : Container
{
    public LootItem Item { get; private set; }
    
    [Export]
    public TextureRect Icon { get; private set; }
    
    [Export]
    public TextureRect AmmoIcon { get; private set; }
    
    [Export]
    public Label TotalAmmoLabel { get; private set; }
    [Export]
    public Label LoadedAmmoLabel { get; private set; }

    public void Init(LootItem item)
    {
        Item = item;

        Icon.Texture = item.InventorySprite;
        
        InventoryManager.Instance.LoadedAmmoChanged += OnInstanceOnLoadedAmmoChanged;
        
        if (string.IsNullOrWhiteSpace(item.WeaponData.AmmoKey))
        {
            TotalAmmoLabel.Hide();
            AmmoIcon.Hide();
            return;
        }

        if (InventoryManager.Instance.TryGetItem(item.WeaponData.AmmoKey, out var ammoItem))
        {
            AmmoIcon.Texture = ammoItem.Item.InventorySprite;
        }
        else
        {
            AmmoIcon.Hide();
        }
        //AmmoIcon.Texture = InventoryManager.Instance.

        UpdateCounter();
        // Register this only if there's ammo
        InventoryManager.Instance.TotalAmmoChanged += OnInstanceOnTotalAmmoChanged;
    }

    private void OnInstanceOnLoadedAmmoChanged(StringName weaponKey, int count)
    {
        if (weaponKey != Item.WeaponData.ItemKey) return;
        LoadedAmmoLabel.Text = count.ToString();
    }

    private void OnInstanceOnTotalAmmoChanged(StringName ammoKey, int count)
    {
        if (ammoKey != Item.WeaponData.AmmoKey) return;
        TotalAmmoLabel.Text = count.ToString();
    }

    public void Delete()
    {
        InventoryManager.Instance.LoadedAmmoChanged -= OnInstanceOnLoadedAmmoChanged;
        InventoryManager.Instance.TotalAmmoChanged -= OnInstanceOnTotalAmmoChanged;
        QueueFree();
    }

    private void UpdateCounter()
    {
        TotalAmmoLabel.Text = InventoryManager.Instance.GetItemCount(Item.WeaponData.AmmoKey).ToString();
    }
}