ModItemList.cs

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using System.Collections.Generic;
using System.IO;
using UnityEngine;
 
public class ModItemList<T> where T : Object
{
    public ResourceCache<T> cache = new ResourceCache<T>();
 
    public List<ModItem<T>> list = new List<ModItem<T>>();
 
    public Dictionary<string, ModItem<T>> dict = new Dictionary<string, ModItem<T>>();
 
    public int catLength;
 
    public object loadOption;
 
    public ModItemList(int _catLength = 0)
    {
        catLength = _catLength;
    }
 
    public ModItemList(int _catLength, object _loadOption)
        : this(_catLength)
    {
        loadOption = _loadOption;
    }
 
    public string GetRandomID(string category = null)
    {
        if (list.Count == 0)
        {
            return null;
        }
        ModItem<T> modItem;
        do
        {
            modItem = list[Rand.rnd(list.Count)];
        }
        while (category != null && !(modItem.category == category));
        return modItem.id;
    }
 
    public string GetNextID(string currentId, int a, bool ignoreCategory = true)
    {
        int num = IndexOf(currentId) + a;
        if (num >= list.Count)
        {
            num = 0;
        }
        if (num < 0)
        {
            num = list.Count - 1;
        }
        return list[num].id;
    }
 
    public int IndexOf(string id)
    {
        for (int i = 0; i < list.Count; i++)
        {
            if (list[i].id == id)
            {
                return i;
            }
        }
        return -1;
    }
 
    public ModItem<T> GetItem(string id, bool returnNull = false)
    {
        ModItem<T> value = null;
        if (dict.TryGetValue(id, out value))
        {
            return value;
        }
        if (!returnNull)
        {
            return list[0];
        }
        return null;
    }
 
    public T GetObject(string id, object option = null)
    {
        ModItem<T> item = GetItem(id, returnNull: true);
        if (item != null)
        {
            return item.GetObject();
        }
        return null;
    }
 
    public void Add(FileInfo fi, string path = null, string prefix = "")
    {
        Add(Path.GetFileNameWithoutExtension(prefix + ((fi != null) ? fi.Name : path)), fi, path);
    }
 
    public void Add(string id, FileInfo fi, string path = null)
    {
        if (dict.ContainsKey(id))
        {
            dict[id].Set(fi, path);
            return;
        }
        list.Add(new ModItem<T>(fi, path, this, id));
        dict.Add(id, list[list.Count - 1]);
    }
}