TextureModContent.cs

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using System;
using System.Collections.Generic;
using Microsoft.Xna.Framework.Graphics;

namespace Loot.Api.ModContent
{
    public abstract class TextureModContent
    {
        protected IDictionary<string, Texture2D> _textures;

        protected Texture2D GetFrom(IDictionary<string, Texture2D> dictionary, string key)
        {
            return dictionary.TryGetValue(key, out var texture) ? texture : null;
        }

        public Texture2D GetTexture(string key)
        {
            return GetFrom(_textures, key);
        }

        protected void AddTo(IDictionary<string, Texture2D> dictionary, string key, Texture2D texture)
        {
            if (dictionary.ContainsKey(key))
            {
                throw new Exception($"Key '{key}' already present in ModContent");
            }

            ProcessTexture2D(ref texture);
            dictionary.Add(key, texture);
        }

        public void AddTexture(string key, Texture2D texture)
        {
            AddTo(_textures, key, texture);
        }

        public void _Initialize()
        {
            _textures = new Dictionary<string, Texture2D>();
            Initialize();
        }

        public void _Load()
        {
            Load();
        }

        public void _Unload()
        {
            _textures = null;
            Unload();
        }

        protected virtual void ProcessTexture2D(ref Texture2D texture)
        {
        }

        protected virtual void Initialize()
        {
        }

        protected virtual void Load()
        {
        }

        protected virtual void Unload()
        {
        }

        public abstract string GetRegistryKey();
    }
}