inventory/Runtime/RandomItems.cs

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using Sirenix.OdinInspector;

namespace KairoEngine.Inventory
{
    [System.Serializable]
    public class RandomItem
    {
        public ItemBase item;
        [Range(0, 100f)] public float probability = 5f;

        [MinMaxSlider(0, 1000, true)] public Vector2 quantity = new Vector2(1, 1);
    }

    public class RandomItems : MonoBehaviour
    {
        public bool addItems = true;
        [ShowInInspector] public ItemContainer itemContainer;
        public List<RandomItem> items = new List<RandomItem>();

        void Start()
        {
            if(itemContainer == null)
            {
                Debug.LogError("Missing item container in RandomItems for " + gameObject.name);
                return;
            }
            if(addItems) 
            {
                addItems = false;
                AddRandomItems();
            }
        }

        private void AddRandomItems()
        {
            foreach (var item in items)
            {
                float dice = Random.Range(0, 101);
                if(dice <= item.probability)
                {
                    AddItem(item);
                }
            }
        }

        private void AddItem(RandomItem item)
        {
            int quantity = Random.Range((int)item.quantity.x, ((int)item.quantity.y) + 1);
            if(item.item.category == ItemType.firearm)
            {
                ItemBaseFirearm itemBaseFirearm = (ItemBaseFirearm)item.item;
                ItemBaseAmmo itemBaseAmmo = (ItemBaseAmmo)itemBaseFirearm.ammoType;
                int ammo = itemBaseFirearm.ammoCapacity;
                ItemFirearmRef firearmRef = new ItemFirearmRef(itemBaseFirearm, quantity, itemBaseAmmo, ammo);
                itemContainer.AddItem(firearmRef);
            }
            else
            {
                ItemRef itemRef = new ItemRef(item.item, quantity, 10000);
                itemContainer.AddItem(itemRef);
            }
        }
    }

}