lsh4/Assets/Scripts/UI/InventoryItem.cs

using UnityEngine;

public enum ItemType
{
    Consumable,
    Weapon,
    Armor,
    Quest,
    Misc
}

public enum ConsumableEffect
{
    None,
    RestoreStamina,
    RestoreHealth,
    RestoreBoth
}

[System.Serializable]
public class InventoryItem
{
    public string itemName;
    public Sprite icon;
    public int quantity;
    public ItemType itemType = ItemType.Misc;
    public ConsumableEffect consumableEffect = ConsumableEffect.None;
    public int effectAmount = 20; // Amount of stamina/HP restored
    
    public void Use(CharacterInGroup character)
    {
        if (itemType != ItemType.Consumable) return;
        
        switch (consumableEffect)
        {
            case ConsumableEffect.RestoreStamina:
                character.currentFatigue = Mathf.Min(character.maxFatigue, character.currentFatigue + effectAmount);
                UIUpdater.Instance?.UpdateCharacterFatigue(character);
                break;
                
            case ConsumableEffect.RestoreHealth:
                character.currentHP = Mathf.Min(character.maxHP, character.currentHP + effectAmount);
                UIUpdater.Instance?.UpdateCharacterHP(character);
                break;
                
            case ConsumableEffect.RestoreBoth:
                character.currentFatigue = Mathf.Min(character.maxFatigue, character.currentFatigue + effectAmount);
                character.currentHP = Mathf.Min(character.maxHP, character.currentHP + effectAmount);
                UIUpdater.Instance?.UpdateCharacterFatigue(character);
                UIUpdater.Instance?.UpdateCharacterHP(character);
                break;
        }
        
        quantity--;
    }
}