ExtraCommands/extracommands/ExtraCommandsPlugin.cs

using System;
using IllusionPlugin;
//using UnityEngine;
using System.Reflection;

using GamecraftModdingAPI.Commands;
using GamecraftModdingAPI.Utility;

namespace ExtraCommands
{
    public class Plugin : IllusionPlugin.IEnhancedPlugin
    {

	    public override string Name { get; } = "ExtraCommands";

        public override string Version { get; }  = Assembly.GetExecutingAssembly().GetName().Version.ToString();

        public string HarmonyID { get; } = "org.git.exmods.extracommands.extracommands";

        public override void OnApplicationQuit()
        {
			GamecraftModdingAPI.Main.Shutdown();
        }

		public override void OnApplicationStart()
		{
			GamecraftModdingAPI.Main.Init();
			object[] empty = new object[] { };
			int engineCount = 0;
			foreach (Type t in Assembly.GetExecutingAssembly().GetTypes())
			{
				CustomCommandAttribute[] attributes = (CustomCommandAttribute[])t.GetCustomAttributes(typeof(CustomCommandAttribute), false);
				ICustomCommandEngine inst = null;
				foreach (CustomCommandAttribute attr in attributes)
				{
					if (attr != null && CustomCommandAttribute.IsCompatible(t))
					{
						if (inst == null)
						{
							// create instance by getting the constructor through reflection
							inst = (ICustomCommandEngine)t.GetConstructor(new Type[] { }).Invoke(empty);
							CommandManager.AddCommand(inst);
							engineCount++;
						}
					}
				}
			}
			Logging.MetaLog($"Added {engineCount} custom command engines");
		}
    }
}